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freebsd-dev/sys/fs/nfsclient/nfs_clrpcops.c
Warner Losh 685dc743dc sys: Remove $FreeBSD$: one-line .c pattern 
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
2023-08-16 11:54:36 -06:00

9259 lines
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
/*
* Rpc op calls, generally called from the vnode op calls or through the
* buffer cache, for NFS v2, 3 and 4.
* These do not normally make any changes to vnode arguments or use
* structures that might change between the VFS variants. The returned
* arguments are all at the end, after the NFSPROC_T *p one.
*/
#include "opt_inet6.h"
#include <fs/nfs/nfsport.h>
#include <fs/nfsclient/nfs.h>
#include <sys/extattr.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
SYSCTL_DECL(_vfs_nfs);
static int nfsignore_eexist = 0;
SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW,
&nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink");
static int nfscl_dssameconn = 0;
SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW,
&nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs");
static uint64_t nfs_maxcopyrange = SSIZE_MAX;
SYSCTL_U64(_vfs_nfs, OID_AUTO, maxcopyrange, CTLFLAG_RW,
&nfs_maxcopyrange, 0, "Max size of a Copy so RPC times reasonable");
/*
* Global variables
*/
extern struct nfsstatsv1 nfsstatsv1;
extern int nfs_numnfscbd;
extern struct timeval nfsboottime;
extern u_int32_t newnfs_false, newnfs_true;
extern nfstype nfsv34_type[9];
extern int nfsrv_useacl;
extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
extern int nfscl_debuglevel;
extern int nfs_pnfsiothreads;
extern u_long sb_max_adj;
NFSCLSTATEMUTEX;
int nfstest_outofseq = 0;
int nfscl_assumeposixlocks = 1;
int nfscl_enablecallb = 0;
short nfsv4_cbport = NFSV4_CBPORT;
int nfstest_openallsetattr = 0;
#define DIRHDSIZ offsetof(struct dirent, d_name)
/*
* nfscl_getsameserver() can return one of three values:
* NFSDSP_USETHISSESSION - Use this session for the DS.
* NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new
* session.
* NFSDSP_NOTFOUND - No matching server was found.
*/
enum nfsclds_state {
NFSDSP_USETHISSESSION = 0,
NFSDSP_SEQTHISSESSION = 1,
NFSDSP_NOTFOUND = 2,
};
/*
* Do a write RPC on a DS data file, using this structure for the arguments,
* so that this function can be executed by a separate kernel process.
*/
struct nfsclwritedsdorpc {
int done;
int inprog;
struct task tsk;
struct vnode *vp;
int iomode;
int must_commit;
nfsv4stateid_t *stateidp;
struct nfsclds *dsp;
uint64_t off;
int len;
#ifdef notyet
int advise;
#endif
struct nfsfh *fhp;
struct mbuf *m;
int vers;
int minorvers;
struct ucred *cred;
NFSPROC_T *p;
int err;
};
static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
struct ucred *, NFSPROC_T *, struct nfsvattr *, int *);
static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *);
static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
int);
static int nfsrpc_deallocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *,
struct nfsvattr *, int *, struct ucred *, NFSPROC_T *);
static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
struct nfsvattr *, struct nfsfh **, int *, int *);
static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
int *, int *);
static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
struct nfscllockowner *, u_int64_t, u_int64_t,
u_int32_t, struct ucred *, NFSPROC_T *, int);
static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
struct acl *, nfsv4stateid_t *);
static int nfsrpc_layouterror(struct nfsmount *, uint8_t *, int, uint64_t,
uint64_t, nfsv4stateid_t *, struct ucred *, NFSPROC_T *, uint32_t,
uint32_t, char *);
static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
uint32_t, uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
struct ucred *, NFSPROC_T *);
static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *,
struct sockaddr_in6 *, sa_family_t, int, int, struct nfsclds **,
NFSPROC_T *);
static void nfscl_initsessionslots(struct nfsclsession *);
static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *,
nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *,
NFSPROC_T *);
static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *,
nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *,
struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int,
struct ucred *, NFSPROC_T *);
static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *);
static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
struct ucred *, NFSPROC_T *);
static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
struct nfsclds *, struct nfsclds **, uint32_t *);
static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *,
struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *,
NFSPROC_T *);
static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
struct nfsfh *, int, int, struct ucred *, NFSPROC_T *);
#ifdef notyet
static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *,
struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *,
NFSPROC_T *);
static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *,
struct nfsfh *, int, int, struct ucred *, NFSPROC_T *);
#endif
static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *,
struct nfsvattr *, int *, struct ucred *, NFSPROC_T *);
static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t,
uint64_t, uint64_t, nfsv4stateid_t *, int, int, int);
static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *,
NFSPROC_T *);
static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *,
nfsv4stateid_t *, int *, struct nfsclflayouthead *);
static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *,
int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
struct nfscldeleg **, struct ucred *, NFSPROC_T *);
static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *,
nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
struct nfsfh **, int *, int *, int *);
static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *,
int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *,
struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *);
static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *,
nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
struct nfsfh **, int *, int *, int *, nfsv4stateid_t *,
int, int, int, int *, struct nfsclflayouthead *, int *);
static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t,
uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *,
struct nfsclflayouthead *, struct ucred *, NFSPROC_T *);
static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *,
int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **,
struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *);
static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *,
nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *,
struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *);
static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *,
int, struct nfsvattr *, int *, struct ucred *);
static struct mbuf *nfsm_split(struct mbuf *, uint64_t);
static void nfscl_statfs(struct vnode *, struct ucred *, NFSPROC_T *);
int nfs_pnfsio(task_fn_t *, void *);
/*
* nfs null call from vfs.
*/
int
nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
{
int error;
struct nfsrv_descript nfsd, *nd = &nfsd;
NFSCL_REQSTART(nd, NFSPROC_NULL, vp, NULL);
error = nfscl_request(nd, vp, p, cred);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs access rpc op.
* For nfs version 3 and 4, use the access rpc to check accessibility. If file
* modes are changed on the server, accesses might still fail later.
*/
int
nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
int error;
u_int32_t mode, rmode;
if (acmode & VREAD)
mode = NFSACCESS_READ;
else
mode = 0;
if (vp->v_type == VDIR) {
if (acmode & VWRITE)
mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
NFSACCESS_DELETE);
if (acmode & VEXEC)
mode |= NFSACCESS_LOOKUP;
} else {
if (acmode & VWRITE)
mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
if (acmode & VEXEC)
mode |= NFSACCESS_EXECUTE;
}
/*
* Now, just call nfsrpc_accessrpc() to do the actual RPC.
*/
error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode);
/*
* The NFS V3 spec does not clarify whether or not
* the returned access bits can be a superset of
* the ones requested, so...
*/
if (!error && (rmode & mode) != mode)
error = EACCES;
return (error);
}
/*
* The actual rpc, separated out for Darwin.
*/
int
nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep)
{
u_int32_t *tl;
u_int32_t supported, rmode;
int error;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
struct nfsmount *nmp;
struct nfsnode *np;
*attrflagp = 0;
supported = mode;
nmp = VFSTONFS(vp->v_mount);
np = VTONFS(vp);
if ((nmp->nm_privflag & NFSMNTP_FAKEROOTFH) != 0 &&
nmp->nm_fhsize == 0) {
/* Attempt to get the actual root file handle. */
error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp), cred, p);
if (error != 0)
return (EACCES);
if (np->n_fhp->nfh_len == NFSX_FHMAX + 1)
nfscl_statfs(vp, cred, p);
}
NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(mode);
if (nd->nd_flag & ND_NFSV4) {
/*
* And do a Getattr op.
*/
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp);
if (error)
goto nfsmout;
}
if (!nd->nd_repstat) {
if (nd->nd_flag & ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
supported = fxdr_unsigned(u_int32_t, *tl++);
} else {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
}
rmode = fxdr_unsigned(u_int32_t, *tl);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_postop_attr(nd, nap, attrflagp);
/*
* It's not obvious what should be done about
* unsupported access modes. For now, be paranoid
* and clear the unsupported ones.
*/
rmode &= supported;
*rmodep = rmode;
} else
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs open rpc
*/
int
nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
{
struct nfsclopen *op;
struct nfscldeleg *dp;
struct nfsfh *nfhp;
struct nfsnode *np = VTONFS(vp);
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
u_int32_t mode, clidrev;
int ret, newone, error, expireret = 0, retrycnt;
/*
* For NFSv4, Open Ops are only done on Regular Files.
*/
if (vp->v_type != VREG)
return (0);
mode = 0;
if (amode & FREAD)
mode |= NFSV4OPEN_ACCESSREAD;
if (amode & FWRITE)
mode |= NFSV4OPEN_ACCESSWRITE;
nfhp = np->n_fhp;
retrycnt = 0;
#ifdef notdef
{ char name[100]; int namel;
namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
bcopy(NFS4NODENAME(np->n_v4), name, namel);
name[namel] = '\0';
printf("rpcopen p=0x%x name=%s",p->p_pid,name);
if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
else printf(" fhl=0\n");
}
#endif
do {
dp = NULL;
error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
cred, p, NULL, &op, &newone, &ret, 1, true);
if (error) {
return (error);
}
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
else
clidrev = 0;
if (ret == NFSCLOPEN_DOOPEN) {
if (np->n_v4 != NULL) {
/*
* For the first attempt, try and get a layout, if
* pNFS is enabled for the mount.
*/
if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
nfs_numnfscbd == 0 ||
(np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0)
error = nfsrpc_openrpc(nmp, vp,
np->n_v4->n4_data,
np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, mode, op,
NFS4NODENAME(np->n_v4),
np->n_v4->n4_namelen,
&dp, 0, 0x0, cred, p, 0, 0);
else
error = nfsrpc_getopenlayout(nmp, vp,
np->n_v4->n4_data,
np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, mode, op,
NFS4NODENAME(np->n_v4),
np->n_v4->n4_namelen, &dp, cred, p);
if (dp != NULL) {
NFSLOCKNODE(np);
np->n_flag &= ~NDELEGMOD;
/*
* Invalidate the attribute cache, so that
* attributes that pre-date the issue of a
* delegation are not cached, since the
* cached attributes will remain valid while
* the delegation is held.
*/
NFSINVALATTRCACHE(np);
NFSUNLOCKNODE(np);
(void) nfscl_deleg(nmp->nm_mountp,
op->nfso_own->nfsow_clp,
nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
}
} else {
error = EIO;
}
newnfs_copyincred(cred, &op->nfso_cred);
} else if (ret == NFSCLOPEN_SETCRED)
/*
* This is a new local open on a delegation. It needs
* to have credentials so that an open can be done
* against the server during recovery.
*/
newnfs_copyincred(cred, &op->nfso_cred);
/*
* nfso_opencnt is the count of how many VOP_OPEN()s have
* been done on this Open successfully and a VOP_CLOSE()
* is expected for each of these.
* If error is non-zero, don't increment it, since the Open
* hasn't succeeded yet.
*/
if (!error) {
op->nfso_opencnt++;
if (NFSHASNFSV4N(nmp) && NFSHASONEOPENOWN(nmp)) {
NFSLOCKNODE(np);
np->n_openstateid = op;
NFSUNLOCKNODE(np);
}
}
nfscl_openrelease(nmp, op, error, newone);
if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_open");
} else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
&& clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
retrycnt++;
}
} while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
return (error);
}
/*
* the actual open rpc
*/
int
nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
u_int8_t *name, int namelen, struct nfscldeleg **dpp,
int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
int syscred, int recursed)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfscldeleg *dp, *ndp = NULL;
struct nfsvattr nfsva;
u_int32_t rflags, deleg;
nfsattrbit_t attrbits;
int error, ret, acesize, limitby;
struct nfsclsession *tsep;
dp = *dpp;
*dpp = NULL;
nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0,
cred);
NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
*tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
*tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
(void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
if (reclaim) {
*tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(delegtype);
} else {
if (dp != NULL) {
*tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = dp->nfsdl_stateid.seqid;
*tl++ = dp->nfsdl_stateid.other[0];
*tl++ = dp->nfsdl_stateid.other[1];
*tl = dp->nfsdl_stateid.other[2];
} else {
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
}
(void) nfsm_strtom(nd, name, namelen);
}
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
(void) nfsrv_putattrbit(nd, &attrbits);
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
if (!nd->nd_repstat) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
6 * NFSX_UNSIGNED);
op->nfso_stateid.seqid = *tl++;
op->nfso_stateid.other[0] = *tl++;
op->nfso_stateid.other[1] = *tl++;
op->nfso_stateid.other[2] = *tl;
rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error)
goto nfsmout;
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
deleg = fxdr_unsigned(u_int32_t, *tl);
if (deleg == NFSV4OPEN_DELEGATEREAD ||
deleg == NFSV4OPEN_DELEGATEWRITE) {
if (!(op->nfso_own->nfsow_clp->nfsc_flags &
NFSCLFLAGS_FIRSTDELEG))
op->nfso_own->nfsow_clp->nfsc_flags |=
(NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
ndp = malloc(
sizeof (struct nfscldeleg) + newfhlen,
M_NFSCLDELEG, M_WAITOK);
LIST_INIT(&ndp->nfsdl_owner);
LIST_INIT(&ndp->nfsdl_lock);
ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
ndp->nfsdl_fhlen = newfhlen;
NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
newnfs_copyincred(cred, &ndp->nfsdl_cred);
nfscl_lockinit(&ndp->nfsdl_rwlock);
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
NFSX_UNSIGNED);
ndp->nfsdl_stateid.seqid = *tl++;
ndp->nfsdl_stateid.other[0] = *tl++;
ndp->nfsdl_stateid.other[1] = *tl++;
ndp->nfsdl_stateid.other[2] = *tl++;
ret = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEWRITE) {
ndp->nfsdl_flags = NFSCLDL_WRITE;
/*
* Indicates how much the file can grow.
*/
NFSM_DISSECT(tl, u_int32_t *,
3 * NFSX_UNSIGNED);
limitby = fxdr_unsigned(int, *tl++);
switch (limitby) {
case NFSV4OPEN_LIMITSIZE:
ndp->nfsdl_sizelimit = fxdr_hyper(tl);
break;
case NFSV4OPEN_LIMITBLOCKS:
ndp->nfsdl_sizelimit =
fxdr_unsigned(u_int64_t, *tl++);
ndp->nfsdl_sizelimit *=
fxdr_unsigned(u_int64_t, *tl);
break;
default:
error = NFSERR_BADXDR;
goto nfsmout;
}
} else {
ndp->nfsdl_flags = NFSCLDL_READ;
}
if (ret)
ndp->nfsdl_flags |= NFSCLDL_RECALL;
error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, false,
&ret, &acesize, p);
if (error)
goto nfsmout;
} else if (deleg != NFSV4OPEN_DELEGATENONE) {
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, NULL, p, cred);
if (error)
goto nfsmout;
if (ndp != NULL) {
ndp->nfsdl_change = nfsva.na_filerev;
ndp->nfsdl_modtime = nfsva.na_mtime;
ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
}
if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
do {
ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
cred, p);
if (ret == NFSERR_DELAY)
(void) nfs_catnap(PZERO, ret, "nfs_open");
} while (ret == NFSERR_DELAY);
error = ret;
}
if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
nfscl_assumeposixlocks)
op->nfso_posixlock = 1;
else
op->nfso_posixlock = 0;
/*
* If the server is handing out delegations, but we didn't
* get one because an OpenConfirm was required, try the
* Open again, to get a delegation. This is a harmless no-op,
* from a server's point of view.
*/
if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
(op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
&& !error && dp == NULL && ndp == NULL && !recursed) {
do {
ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
cred, p, syscred, 1);
if (ret == NFSERR_DELAY)
(void) nfs_catnap(PZERO, ret, "nfs_open2");
} while (ret == NFSERR_DELAY);
if (ret) {
if (ndp != NULL) {
free(ndp, M_NFSCLDELEG);
ndp = NULL;
}
if (ret == NFSERR_STALECLIENTID ||
ret == NFSERR_STALEDONTRECOVER ||
ret == NFSERR_BADSESSION)
error = ret;
}
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
if (!error)
*dpp = ndp;
else if (ndp != NULL)
free(ndp, M_NFSCLDELEG);
m_freem(nd->nd_mrep);
return (error);
}
/*
* open downgrade rpc
*/
int
nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
struct ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
if (NFSHASNFSV4N(VFSTONFS(vp->v_mount)))
*tl++ = 0;
else
*tl++ = op->nfso_stateid.seqid;
*tl++ = op->nfso_stateid.other[0];
*tl++ = op->nfso_stateid.other[1];
*tl++ = op->nfso_stateid.other[2];
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
*tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
*tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
if (!nd->nd_repstat) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
op->nfso_stateid.seqid = *tl++;
op->nfso_stateid.other[0] = *tl++;
op->nfso_stateid.other[1] = *tl++;
op->nfso_stateid.other[2] = *tl;
}
if (nd->nd_repstat && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* V4 Close operation.
*/
int
nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
{
struct nfsclclient *clp;
int error;
if (vp->v_type != VREG)
return (0);
if (doclose)
error = nfscl_doclose(vp, &clp, p);
else {
error = nfscl_getclose(vp, &clp);
if (error == 0)
nfscl_clientrelease(clp);
}
return (error);
}
/*
* Close the open.
*/
int
nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p,
bool loop_on_delayed, bool freeop)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfscllockowner *lp, *nlp;
struct nfscllock *lop, *nlop;
struct ucred *tcred;
u_int64_t off = 0, len = 0;
u_int32_t type = NFSV4LOCKT_READ;
int error, do_unlock, trycnt;
tcred = newnfs_getcred();
newnfs_copycred(&op->nfso_cred, tcred);
/*
* (Theoretically this could be done in the same
* compound as the close, but having multiple
* sequenced Ops in the same compound might be
* too scary for some servers.)
*/
if (op->nfso_posixlock) {
off = 0;
len = NFS64BITSSET;
type = NFSV4LOCKT_READ;
}
/*
* Since this function is only called from VOP_INACTIVE(), no
* other thread will be manipulating this Open. As such, the
* lock lists are not being changed by other threads, so it should
* be safe to do this without locking.
*/
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
do_unlock = 1;
LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
if (op->nfso_posixlock == 0) {
off = lop->nfslo_first;
len = lop->nfslo_end - lop->nfslo_first;
if (lop->nfslo_type == F_WRLCK)
type = NFSV4LOCKT_WRITE;
else
type = NFSV4LOCKT_READ;
}
if (do_unlock) {
trycnt = 0;
do {
error = nfsrpc_locku(nd, nmp, lp, off,
len, type, tcred, p, 0);
if ((nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_DELAY) &&
error == 0)
(void) nfs_catnap(PZERO,
(int)nd->nd_repstat,
"nfs_close");
} while ((nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_DELAY) &&
error == 0 && trycnt++ < 5);
if (op->nfso_posixlock)
do_unlock = 0;
}
nfscl_freelock(lop, 0);
}
/*
* Do a ReleaseLockOwner.
* The lock owner name nfsl_owner may be used by other opens for
* other files but the lock_owner4 name that nfsrpc_rellockown()
* puts on the wire has the file handle for this file appended
* to it, so it can be done now.
*/
(void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
lp->nfsl_open->nfso_fhlen, tcred, p);
}
/*
* There could be other Opens for different files on the same
* OpenOwner, so locking is required.
*/
NFSLOCKCLSTATE();
nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
NFSUNLOCKCLSTATE();
do {
error = nfscl_tryclose(op, tcred, nmp, p, loop_on_delayed);
if (error == NFSERR_GRACE)
(void) nfs_catnap(PZERO, error, "nfs_close");
} while (error == NFSERR_GRACE);
NFSLOCKCLSTATE();
nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
nfscl_freelockowner(lp, 0);
if (freeop && error != NFSERR_DELAY)
nfscl_freeopen(op, 0, true);
NFSUNLOCKCLSTATE();
NFSFREECRED(tcred);
return (error);
}
/*
* The actual Close RPC.
*/
int
nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
int syscred)
{
u_int32_t *tl;
int error;
nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
op->nfso_fhlen, NULL, NULL, 0, 0, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
if (NFSHASNFSV4N(nmp)) {
*tl++ = 0;
*tl++ = 0;
} else {
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
*tl++ = op->nfso_stateid.seqid;
}
*tl++ = op->nfso_stateid.other[0];
*tl++ = op->nfso_stateid.other[1];
*tl = op->nfso_stateid.other[2];
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
if (!NFSHASNFSV4N(nmp))
NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
if (nd->nd_repstat == 0)
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
error = nd->nd_repstat;
if (!NFSHASNFSV4N(nmp) && error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* V4 Open Confirm RPC.
*/
int
nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
int error;
nmp = VFSTONFS(vp->v_mount);
if (NFSHASNFSV4N(nmp))
return (0); /* No confirmation for NFSv4.1. */
nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL,
0, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
*tl++ = op->nfso_stateid.seqid;
*tl++ = op->nfso_stateid.other[0];
*tl++ = op->nfso_stateid.other[1];
*tl++ = op->nfso_stateid.other[2];
*tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
if (!nd->nd_repstat) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
op->nfso_stateid.seqid = *tl++;
op->nfso_stateid.other[0] = *tl++;
op->nfso_stateid.other[1] = *tl++;
op->nfso_stateid.other[2] = *tl;
}
error = nd->nd_repstat;
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
* when a mount has just occurred and when the server replies NFSERR_EXPIRED.
*/
int
nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
bool *retokp, struct ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
u_short port;
int error, isinet6 = 0, callblen;
nfsquad_t confirm;
static u_int32_t rev = 0;
struct nfsclds *dsp, *odsp;
struct in6_addr a6;
struct nfsclsession *tsep;
struct rpc_reconupcall recon;
struct nfscl_reconarg *rcp;
if (nfsboottime.tv_sec == 0)
NFSSETBOOTTIME(nfsboottime);
if (NFSHASNFSV4N(nmp)) {
error = NFSERR_BADSESSION;
odsp = dsp = NULL;
if (retokp != NULL) {
NFSLOCKMNT(nmp);
odsp = TAILQ_FIRST(&nmp->nm_sess);
NFSUNLOCKMNT(nmp);
}
if (odsp != NULL) {
/*
* When a session already exists, first try a
* CreateSession with the extant ClientID.
*/
dsp = malloc(sizeof(struct nfsclds) +
odsp->nfsclds_servownlen + 1, M_NFSCLDS,
M_WAITOK | M_ZERO);
dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
dsp->nfsclds_servownlen = odsp->nfsclds_servownlen;
dsp->nfsclds_sess.nfsess_clientid =
odsp->nfsclds_sess.nfsess_clientid;
dsp->nfsclds_sess.nfsess_sequenceid =
odsp->nfsclds_sess.nfsess_sequenceid + 1;
dsp->nfsclds_flags = odsp->nfsclds_flags;
if (dsp->nfsclds_servownlen > 0)
memcpy(dsp->nfsclds_serverown,
odsp->nfsclds_serverown,
dsp->nfsclds_servownlen + 1);
mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
NULL, MTX_DEF);
nfscl_initsessionslots(&dsp->nfsclds_sess);
error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
&nmp->nm_sockreq, NULL,
dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
NFSCL_DEBUG(1, "create session for extant "
"ClientID=%d\n", error);
if (error != 0) {
nfscl_freenfsclds(dsp);
dsp = NULL;
/*
* If *retokp is true, return any error other
* than NFSERR_STALECLIENTID,
* NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER
* so that nfscl_recover() will not loop.
*/
if (*retokp)
return (NFSERR_IO);
} else
*retokp = true;
} else if (retokp != NULL && *retokp)
return (NFSERR_IO);
if (error != 0) {
/*
* Either there was no previous session or the
* CreateSession attempt failed, so...
* do an ExchangeID followed by the CreateSession.
*/
clp->nfsc_rev = rev++;
error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0,
NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp,
cred, p);
NFSCL_DEBUG(1, "aft exch=%d\n", error);
if (error == 0)
error = nfsrpc_createsession(nmp,
&dsp->nfsclds_sess, &nmp->nm_sockreq, NULL,
dsp->nfsclds_sess.nfsess_sequenceid, 1,
cred, p);
NFSCL_DEBUG(1, "aft createsess=%d\n", error);
}
if (error == 0) {
/*
* If the session supports a backchannel, set up
* the BindConnectionToSession call in the krpc
* so that it is done on a reconnection.
*/
if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) {
rcp = mem_alloc(sizeof(*rcp));
rcp->minorvers = nmp->nm_minorvers;
memcpy(rcp->sessionid,
dsp->nfsclds_sess.nfsess_sessionid,
NFSX_V4SESSIONID);
recon.call = nfsrpc_bindconnsess;
recon.arg = rcp;
CLNT_CONTROL(nmp->nm_client, CLSET_RECONUPCALL,
&recon);
}
NFSLOCKMNT(nmp);
/*
* The old sessions cannot be safely free'd
* here, since they may still be used by
* in-progress RPCs.
*/
tsep = NULL;
if (TAILQ_FIRST(&nmp->nm_sess) != NULL) {
/*
* Mark the old session defunct. Needed
* when called from nfscl_hasexpired().
*/
tsep = NFSMNT_MDSSESSION(nmp);
tsep->nfsess_defunct = 1;
}
TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
nfsclds_list);
/*
* Wake up RPCs waiting for a slot on the
* old session. These will then fail with
* NFSERR_BADSESSION and be retried with the
* new session by nfsv4_setsequence().
* Also wakeup() processes waiting for the
* new session.
*/
if (tsep != NULL)
wakeup(&tsep->nfsess_slots);
wakeup(&nmp->nm_sess);
NFSUNLOCKMNT(nmp);
} else if (dsp != NULL)
nfscl_freenfsclds(dsp);
if (error == 0 && reclaim == 0) {
error = nfsrpc_reclaimcomplete(nmp, cred, p);
NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
if (error == NFSERR_COMPLETEALREADY ||
error == NFSERR_NOTSUPP)
/* Ignore this error. */
error = 0;
}
return (error);
} else if (retokp != NULL && *retokp)
return (NFSERR_IO);
clp->nfsc_rev = rev++;
/*
* Allocate a single session structure for NFSv4.0, because some of
* the fields are used by NFSv4.0 although it doesn't do a session.
*/
dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
NFSLOCKMNT(nmp);
TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
tsep = NFSMNT_MDSSESSION(nmp);
NFSUNLOCKMNT(nmp);
nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0,
NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(nfsboottime.tv_sec);
*tl = txdr_unsigned(clp->nfsc_rev);
(void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
/*
* set up the callback address
*/
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFS_CALLBCKPROG);
callblen = strlen(nfsv4_callbackaddr);
if (callblen == 0)
cp = nfscl_getmyip(nmp, &a6, &isinet6);
if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
(callblen > 0 || cp != NULL)) {
port = htons(nfsv4_cbport);
cp2 = (u_int8_t *)&port;
#ifdef INET6
if ((callblen > 0 &&
strchr(nfsv4_callbackaddr, ':')) || isinet6) {
char ip6buf[INET6_ADDRSTRLEN], *ip6add;
(void) nfsm_strtom(nd, "tcp6", 4);
if (callblen == 0) {
ip6_sprintf(ip6buf, (struct in6_addr *)cp);
ip6add = ip6buf;
} else {
ip6add = nfsv4_callbackaddr;
}
snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
ip6add, cp2[0], cp2[1]);
} else
#endif
{
(void) nfsm_strtom(nd, "tcp", 3);
if (callblen == 0)
snprintf(addr, INET6_ADDRSTRLEN + 9,
"%d.%d.%d.%d.%d.%d", cp[0], cp[1],
cp[2], cp[3], cp2[0], cp2[1]);
else
snprintf(addr, INET6_ADDRSTRLEN + 9,
"%s.%d.%d", nfsv4_callbackaddr,
cp2[0], cp2[1]);
}
(void) nfsm_strtom(nd, addr, strlen(addr));
} else {
(void) nfsm_strtom(nd, "tcp", 3);
(void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
}
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(clp->nfsc_cbident);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
tsep->nfsess_clientid.lval[0] = *tl++;
tsep->nfsess_clientid.lval[1] = *tl++;
confirm.lval[0] = *tl++;
confirm.lval[1] = *tl;
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
/*
* and confirm it.
*/
nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
NULL, 0, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl++ = tsep->nfsess_clientid.lval[1];
*tl++ = confirm.lval[0];
*tl = confirm.lval[1];
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
}
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getattr call.
*/
int
nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *nap)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
struct nfsnode *np;
struct nfsmount *nmp;
nmp = VFSTONFS(vp->v_mount);
np = VTONFS(vp);
if ((nmp->nm_privflag & NFSMNTP_FAKEROOTFH) != 0 &&
nmp->nm_fhsize == 0) {
/* Attempt to get the actual root file handle. */
error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp), cred, p);
if (error != 0)
return (EACCES);
if (np->n_fhp->nfh_len == NFSX_FHMAX + 1)
nfscl_statfs(vp, cred, p);
}
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred);
if (nd->nd_flag & ND_NFSV4) {
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (!nd->nd_repstat)
error = nfsm_loadattr(nd, nap);
else
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getattr call with non-vnode arguments.
*/
int
nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
uint32_t *leasep)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error, vers = NFS_VER2;
nfsattrbit_t attrbits;
nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0,
cred);
if (nd->nd_flag & ND_NFSV4) {
vers = NFS_VER4;
NFSGETATTR_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
(void) nfsrv_putattrbit(nd, &attrbits);
} else if (nd->nd_flag & ND_NFSV3) {
vers = NFS_VER3;
}
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, vers, NULL, 1, xidp, NULL);
if (error)
return (error);
if (nd->nd_repstat == 0) {
if ((nd->nd_flag & ND_NFSV4) != 0)
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
NULL, NULL);
else
error = nfsm_loadattr(nd, nap);
} else
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do an nfs setattr operation.
*/
int
nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp)
{
int error, expireret = 0, openerr, retrycnt;
u_int32_t clidrev = 0, mode;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsfh *nfhp;
nfsv4stateid_t stateid;
void *lckp;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
mode = NFSV4OPEN_ACCESSWRITE;
else
mode = NFSV4OPEN_ACCESSREAD;
retrycnt = 0;
do {
lckp = NULL;
openerr = 1;
if (NFSHASNFSV4(nmp)) {
nfhp = VTONFS(vp)->n_fhp;
error = nfscl_getstateid(vp, nfhp->nfh_fh,
nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
if (error && vp->v_type == VREG &&
(mode == NFSV4OPEN_ACCESSWRITE ||
nfstest_openallsetattr)) {
/*
* No Open stateid, so try and open the file
* now.
*/
if (mode == NFSV4OPEN_ACCESSWRITE)
openerr = nfsrpc_open(vp, FWRITE, cred,
p);
else
openerr = nfsrpc_open(vp, FREAD, cred,
p);
if (!openerr)
(void) nfscl_getstateid(vp,
nfhp->nfh_fh, nfhp->nfh_len,
mode, 0, cred, p, &stateid, &lckp);
}
}
if (vap != NULL)
error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
rnap, attrflagp);
else
error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid);
if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) {
NFSLOCKMNT(nmp);
nmp->nm_state |= NFSSTA_OPENMODE;
NFSUNLOCKMNT(nmp);
}
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (!openerr)
(void) nfsrpc_close(vp, 0, p);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_setattr");
} else if ((error == NFSERR_EXPIRED ||
((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) &&
NFSHASNFSV4N(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4) ||
(error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD &&
retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
return (error);
}
static int
nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *rnap, int *attrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp, cred);
if (nd->nd_flag & ND_NFSV4)
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
vap->va_type = vp->v_type;
nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
if (nd->nd_flag & ND_NFSV3) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = newnfs_false;
} else if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, NULL);
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error)
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
error = nfscl_postop_attr(nd, rnap, attrflagp);
m_freem(nd->nd_mrep);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
return (error);
}
/*
* nfs lookup rpc
*/
int
nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, uint32_t openmode)
{
uint32_t deleg, rflags, *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
struct nfsnode *np;
struct nfsfh *nfhp;
nfsattrbit_t attrbits;
int error = 0, lookupp = 0, newone, ret, retop;
uint8_t own[NFSV4CL_LOCKNAMELEN];
struct nfsclopen *op;
struct nfscldeleg *ndp;
nfsv4stateid_t stateid;
*attrflagp = 0;
*dattrflagp = 0;
if (dvp->v_type != VDIR)
return (ENOTDIR);
nmp = VFSTONFS(dvp->v_mount);
if (len > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
if (NFSHASNFSV4(nmp) && len == 1 &&
name[0] == '.') {
/*
* Just return the current dir's fh.
*/
np = VTONFS(dvp);
nfhp = malloc(sizeof (struct nfsfh) +
np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
nfhp->nfh_len = np->n_fhp->nfh_len;
NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
*nfhpp = nfhp;
return (0);
}
if (NFSHASNFSV4(nmp) && len == 2 &&
name[0] == '.' && name[1] == '.') {
lookupp = 1;
openmode = 0;
NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp, cred);
} else if (openmode != 0) {
NFSCL_REQSTART(nd, NFSPROC_LOOKUPOPEN, dvp, cred);
nfsm_strtom(nd, name, len);
} else {
NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp, cred);
(void) nfsm_strtom(nd, name, len);
}
if (nd->nd_flag & ND_NFSV4) {
NFSGETATTR_ATTRBIT(&attrbits);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
if (openmode != 0) {
/* Test for a VREG file. */
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_VERIFY);
nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSX_UNSIGNED);
*tl = vtonfsv34_type(VREG);
/* Attempt the Open for VREG. */
nfscl_filllockowner(NULL, own, F_POSIX);
NFSM_BUILD(tl, uint32_t *, 6 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_OPEN);
*tl++ = 0; /* seqid, ignored. */
*tl++ = txdr_unsigned(openmode);
*tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
*tl++ = 0; /* ClientID, ignored. */
*tl = 0;
nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMFH);
}
}
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
ndp = NULL;
if (nd->nd_repstat) {
/*
* When an NFSv4 Lookupp returns ENOENT, it means that
* the lookup is at the root of an fs, so return this dir.
*/
if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
np = VTONFS(dvp);
nfhp = malloc(sizeof (struct nfsfh) +
np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
nfhp->nfh_len = np->n_fhp->nfh_len;
NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
*nfhpp = nfhp;
m_freem(nd->nd_mrep);
return (0);
}
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, dnap, dattrflagp);
else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
ND_NFSV4) {
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
if (error != 0)
goto nfsmout;
*dattrflagp = 1;
}
/* Check Lookup operation reply status. */
if (openmode != 0 && (nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl != 0)
goto nfsmout;
}
/* Look for GetFH reply. */
if (openmode != 0 && (nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl != 0)
goto nfsmout;
error = nfsm_getfh(nd, nfhpp);
if (error)
goto nfsmout;
}
/* Look for Getattr reply. */
if (openmode != 0 && (nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl != 0)
goto nfsmout;
error = nfsm_loadattr(nd, nap);
if (error == 0) {
/*
* We have now successfully completed the
* lookup, so set nd_repstat to 0.
*/
nd->nd_repstat = 0;
*attrflagp = 1;
}
}
goto nfsmout;
}
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
if (error != 0)
goto nfsmout;
*dattrflagp = 1;
/* Skip over the Lookup and GetFH operation status values. */
NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
}
error = nfsm_getfh(nd, nfhpp);
if (error)
goto nfsmout;
error = nfscl_postop_attr(nd, nap, attrflagp);
if (openmode != 0 && error == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID +
10 * NFSX_UNSIGNED);
tl += 4; /* Skip over Verify+Open status. */
stateid.seqid = *tl++;
stateid.other[0] = *tl++;
stateid.other[1] = *tl++;
stateid.other[2] = *tl;
rflags = fxdr_unsigned(uint32_t, *(tl + 6));
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error != 0)
goto nfsmout;
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
deleg = fxdr_unsigned(uint32_t, *tl);
if (deleg == NFSV4OPEN_DELEGATEREAD ||
deleg == NFSV4OPEN_DELEGATEWRITE) {
/*
* Just need to fill in the fields used by
* nfscl_trydelegreturn().
* Mark the mount point as acquiring
* delegations, so NFSPROC_LOOKUPOPEN will
* no longer be done.
*/
NFSLOCKMNT(nmp);
nmp->nm_privflag |= NFSMNTP_DELEGISSUED;
NFSUNLOCKMNT(nmp);
ndp = malloc(sizeof(struct nfscldeleg) +
(*nfhpp)->nfh_len, M_NFSCLDELEG, M_WAITOK);
ndp->nfsdl_fhlen = (*nfhpp)->nfh_len;
NFSBCOPY((*nfhpp)->nfh_fh, ndp->nfsdl_fh,
ndp->nfsdl_fhlen);
newnfs_copyincred(cred, &ndp->nfsdl_cred);
NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
ndp->nfsdl_stateid.seqid = *tl++;
ndp->nfsdl_stateid.other[0] = *tl++;
ndp->nfsdl_stateid.other[1] = *tl++;
ndp->nfsdl_stateid.other[2] = *tl++;
} else if (deleg != NFSV4OPEN_DELEGATENONE) {
error = NFSERR_BADXDR;
goto nfsmout;
}
ret = nfscl_open(dvp, (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len,
openmode, 0, cred, p, NULL, &op, &newone, &retop, 1, true);
if (ret != 0)
goto nfsmout;
if (newone != 0) {
op->nfso_stateid.seqid = stateid.seqid;
op->nfso_stateid.other[0] = stateid.other[0];
op->nfso_stateid.other[1] = stateid.other[1];
op->nfso_stateid.other[2] = stateid.other[2];
op->nfso_mode = openmode;
} else {
op->nfso_stateid.seqid = stateid.seqid;
if (retop == NFSCLOPEN_DOOPEN)
op->nfso_mode |= openmode;
}
if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 ||
nfscl_assumeposixlocks)
op->nfso_posixlock = 1;
else
op->nfso_posixlock = 0;
nfscl_openrelease(nmp, op, 0, 0);
if (ndp != NULL) {
/*
* Since we do not have the vnode, we
* cannot invalidate cached attributes.
* Just return the delegation.
*/
nfscl_trydelegreturn(ndp, cred, nmp, p);
}
}
if ((nd->nd_flag & ND_NFSV3) && !error)
error = nfscl_postop_attr(nd, dnap, dattrflagp);
nfsmout:
m_freem(nd->nd_mrep);
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
free(ndp, M_NFSCLDELEG);
return (error);
}
/*
* Do a readlink rpc.
*/
int
nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsnode *np = VTONFS(vp);
nfsattrbit_t attrbits;
int error, len, cangetattr = 1;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_READLINK, vp, cred);
if (nd->nd_flag & ND_NFSV4) {
/*
* And do a Getattr op.
*/
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp);
if (!nd->nd_repstat && !error) {
NFSM_STRSIZ(len, NFS_MAXPATHLEN);
/*
* This seems weird to me, but must have been added to
* FreeBSD for some reason. The only thing I can think of
* is that there was/is some server that replies with
* more link data than it should?
*/
if (len == NFS_MAXPATHLEN) {
NFSLOCKNODE(np);
if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
len = np->n_size;
cangetattr = 0;
}
NFSUNLOCKNODE(np);
}
error = nfsm_mbufuio(nd, uiop, len);
if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
error = nfscl_postop_attr(nd, nap, attrflagp);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Read operation.
*/
int
nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
int error, expireret = 0, retrycnt;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *np = VTONFS(vp);
struct ucred *newcred;
struct nfsfh *nfhp = NULL;
nfsv4stateid_t stateid;
void *lckp;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
newcred = cred;
if (NFSHASNFSV4(nmp)) {
nfhp = np->n_fhp;
newcred = NFSNEWCRED(cred);
}
retrycnt = 0;
do {
lckp = NULL;
if (NFSHASNFSV4(nmp))
(void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
&lckp);
error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
attrflagp);
if (error == NFSERR_OPENMODE) {
NFSLOCKMNT(nmp);
nmp->nm_state |= NFSSTA_OPENMODE;
NFSUNLOCKMNT(nmp);
}
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_read");
} else if ((error == NFSERR_EXPIRED ||
((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) &&
NFSHASNFSV4N(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4) ||
(error == NFSERR_OPENMODE && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
if (NFSHASNFSV4(nmp))
NFSFREECRED(newcred);
return (error);
}
/*
* The actual read RPC.
*/
static int
nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
int *attrflagp)
{
u_int32_t *tl;
int error = 0, len, retlen, tsiz, eof = 0;
struct nfsrv_descript nfsd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsrv_descript *nd = &nfsd;
int rsize;
off_t tmp_off;
*attrflagp = 0;
tsiz = uiop->uio_resid;
tmp_off = uiop->uio_offset + tsiz;
NFSLOCKMNT(nmp);
if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
NFSUNLOCKMNT(nmp);
return (EFBIG);
}
rsize = nmp->nm_rsize;
NFSUNLOCKMNT(nmp);
nd->nd_mrep = NULL;
while (tsiz > 0) {
*attrflagp = 0;
len = (tsiz > rsize) ? rsize : tsiz;
NFSCL_REQSTART(nd, NFSPROC_READ, vp, cred);
if (nd->nd_flag & ND_NFSV4)
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
if (nd->nd_flag & ND_NFSV2) {
*tl++ = txdr_unsigned(uiop->uio_offset);
*tl++ = txdr_unsigned(len);
*tl = 0;
} else {
txdr_hyper(uiop->uio_offset, tl);
*(tl + 2) = txdr_unsigned(len);
}
/*
* Since I can't do a Getattr for NFSv4 for Write, there
* doesn't seem any point in doing one here, either.
* (See the comment in nfsrpc_writerpc() for more info.)
*/
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp);
} else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
error = nfsm_loadattr(nd, nap);
if (!error)
*attrflagp = 1;
}
if (nd->nd_repstat || error) {
if (!error)
error = nd->nd_repstat;
goto nfsmout;
}
if (nd->nd_flag & ND_NFSV3) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
eof = fxdr_unsigned(int, *(tl + 1));
} else if (nd->nd_flag & ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
eof = fxdr_unsigned(int, *tl);
}
NFSM_STRSIZ(retlen, len);
error = nfsm_mbufuio(nd, uiop, retlen);
if (error)
goto nfsmout;
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
tsiz -= retlen;
if (!(nd->nd_flag & ND_NFSV2)) {
if (eof || retlen == 0)
tsiz = 0;
} else if (retlen < len)
tsiz = 0;
}
return (0);
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs write operation
* When called_from_strategy != 0, it should return EIO for an error that
* indicates recovery is in progress, so that the buffer will be left
* dirty and be written back to the server later. If it loops around,
* the recovery thread could get stuck waiting for the buffer and recovery
* will then deadlock.
*/
int
nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
int called_from_strategy, int ioflag)
{
int error, expireret = 0, retrycnt, nostateid;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *np = VTONFS(vp);
struct ucred *newcred;
struct nfsfh *nfhp = NULL;
nfsv4stateid_t stateid;
void *lckp;
KASSERT(*must_commit >= 0 && *must_commit <= 2,
("nfsrpc_write: must_commit out of range=%d", *must_commit));
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
newcred = cred;
if (NFSHASNFSV4(nmp)) {
newcred = NFSNEWCRED(cred);
nfhp = np->n_fhp;
}
retrycnt = 0;
do {
lckp = NULL;
nostateid = 0;
if (NFSHASNFSV4(nmp)) {
(void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
&lckp);
if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
stateid.other[2] == 0) {
nostateid = 1;
NFSCL_DEBUG(1, "stateid0 in write\n");
}
}
/*
* If there is no stateid for NFSv4, it means this is an
* extraneous write after close. Basically a poorly
* implemented buffer cache. Just don't do the write.
*/
if (nostateid)
error = 0;
else
error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
newcred, &stateid, p, nap, attrflagp, ioflag);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_write");
} else if ((error == NFSERR_EXPIRED ||
((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) &&
NFSHASNFSV4N(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error != 0 && (retrycnt >= 4 ||
((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
error = EIO;
if (NFSHASNFSV4(nmp))
NFSFREECRED(newcred);
return (error);
}
/*
* The actual write RPC.
*/
static int
nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, int ioflag)
{
u_int32_t *tl;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *np = VTONFS(vp);
int error = 0, len, rlen, commit, committed = NFSWRITE_FILESYNC;
int wccflag = 0;
int32_t backup;
struct nfsrv_descript *nd;
nfsattrbit_t attrbits;
uint64_t tmp_off;
ssize_t tsiz, wsize;
bool do_append;
KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
*attrflagp = 0;
tsiz = uiop->uio_resid;
tmp_off = uiop->uio_offset + tsiz;
NFSLOCKMNT(nmp);
if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
NFSUNLOCKMNT(nmp);
return (EFBIG);
}
wsize = nmp->nm_wsize;
do_append = false;
if ((ioflag & IO_APPEND) != 0 && NFSHASNFSV4(nmp) && !NFSHASPNFS(nmp))
do_append = true;
NFSUNLOCKMNT(nmp);
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK);
nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
while (tsiz > 0) {
*attrflagp = 0;
len = (tsiz > wsize) ? wsize : tsiz;
if (do_append)
NFSCL_REQSTART(nd, NFSPROC_APPENDWRITE, vp, cred);
else
NFSCL_REQSTART(nd, NFSPROC_WRITE, vp, cred);
if (nd->nd_flag & ND_NFSV4) {
if (do_append) {
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED +
NFSX_HYPER);
*tl++ = txdr_unsigned(NFSX_HYPER);
txdr_hyper(uiop->uio_offset, tl); tl += 2;
*tl = txdr_unsigned(NFSV4OP_WRITE);
}
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
txdr_hyper(uiop->uio_offset, tl);
tl += 2;
*tl++ = txdr_unsigned(*iomode);
*tl = txdr_unsigned(len);
} else if (nd->nd_flag & ND_NFSV3) {
NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
txdr_hyper(uiop->uio_offset, tl);
tl += 2;
*tl++ = txdr_unsigned(len);
*tl++ = txdr_unsigned(*iomode);
*tl = txdr_unsigned(len);
} else {
u_int32_t x;
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
/*
* Not sure why someone changed this, since the
* RFC clearly states that "beginoffset" and
* "totalcount" are ignored, but it wouldn't
* surprise me if there's a busted server out there.
*/
/* Set both "begin" and "current" to non-garbage. */
x = txdr_unsigned((u_int32_t)uiop->uio_offset);
*tl++ = x; /* "begin offset" */
*tl++ = x; /* "current offset" */
x = txdr_unsigned(len);
*tl++ = x; /* total to this offset */
*tl = x; /* size of this write */
}
nfsm_uiombuf(nd, uiop, len);
/*
* Although it is tempting to do a normal Getattr Op in the
* NFSv4 compound, the result can be a nearly hung client
* system if the Getattr asks for Owner and/or OwnerGroup.
* It occurs when the client can't map either the Owner or
* Owner_group name in the Getattr reply to a uid/gid. When
* there is a cache miss, the kernel does an upcall to the
* nfsuserd. Then, it can try and read the local /etc/passwd
* or /etc/group file. It can then block in getnewbuf(),
* waiting for dirty writes to be pushed to the NFS server.
* The only reason this doesn't result in a complete
* deadlock, is that the upcall times out and allows
* the write to complete. However, progress is so slow
* that it might just as well be deadlocked.
* As such, we get the rest of the attributes, but not
* Owner or Owner_group.
* nb: nfscl_loadattrcache() needs to be told that these
* partial attributes from a write rpc are being
* passed in, via a argument flag.
*/
if (nd->nd_flag & ND_NFSV4) {
NFSWRITEGETATTR_ATTRBIT(&attrbits);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error) {
free(nd, M_TEMP);
return (error);
}
if (nd->nd_repstat) {
/*
* In case the rpc gets retried, roll
* the uio fields changed by nfsm_uiombuf()
* back.
*/
uiop->uio_offset -= len;
uiop->uio_resid += len;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base - len;
uiop->uio_iov->iov_len += len;
}
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
error = nfscl_wcc_data(nd, vp, nap, attrflagp,
&wccflag, &tmp_off);
if (error)
goto nfsmout;
}
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
(ND_NFSV4 | ND_NOMOREDATA) &&
nd->nd_repstat == NFSERR_NOTSAME && do_append) {
/*
* Verify of the file's size failed, so redo the
* write using the file's size as returned in
* the wcc attributes.
*/
if (tmp_off + tsiz <= nmp->nm_maxfilesize) {
do_append = false;
uiop->uio_offset = tmp_off;
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
continue;
} else
nd->nd_repstat = EFBIG;
}
if (!nd->nd_repstat) {
if (do_append) {
/* Strip off the Write reply status. */
do_append = false;
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
}
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
+ NFSX_VERF);
rlen = fxdr_unsigned(int, *tl++);
if (rlen == 0) {
error = NFSERR_IO;
goto nfsmout;
} else if (rlen < len) {
backup = len - rlen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base -
backup;
uiop->uio_iov->iov_len += backup;
uiop->uio_offset -= backup;
uiop->uio_resid += backup;
len = rlen;
}
commit = fxdr_unsigned(int, *tl++);
/*
* Return the lowest commitment level
* obtained by any of the RPCs.
*/
if (committed == NFSWRITE_FILESYNC)
committed = commit;
else if (committed == NFSWRITE_DATASYNC &&
commit == NFSWRITE_UNSTABLE)
committed = commit;
NFSLOCKMNT(nmp);
if (!NFSHASWRITEVERF(nmp)) {
NFSBCOPY((caddr_t)tl,
(caddr_t)&nmp->nm_verf[0],
NFSX_VERF);
NFSSETWRITEVERF(nmp);
} else if (NFSBCMP(tl, nmp->nm_verf,
NFSX_VERF) && *must_commit != 2) {
*must_commit = 1;
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
}
NFSUNLOCKMNT(nmp);
}
if (nd->nd_flag & ND_NFSV4)
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
error = nfsm_loadattr(nd, nap);
if (!error)
*attrflagp = NFS_LATTR_NOSHRINK;
}
} else {
error = nd->nd_repstat;
}
if (error)
goto nfsmout;
NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4));
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
tsiz -= len;
}
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
*iomode = committed;
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
free(nd, M_TEMP);
return (error);
}
/*
* Do an nfs deallocate operation.
*/
int
nfsrpc_deallocate(vnode_t vp, off_t offs, off_t len, struct nfsvattr *nap,
int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
int error, expireret = 0, openerr, retrycnt;
uint32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsfh *nfhp;
nfsv4stateid_t stateid;
void *lckp;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
retrycnt = 0;
do {
lckp = NULL;
openerr = 1;
nfhp = VTONFS(vp)->n_fhp;
error = nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp);
if (error != 0) {
/*
* No Open stateid, so try and open the file
* now.
*/
openerr = nfsrpc_open(vp, FWRITE, cred, p);
if (openerr == 0)
nfscl_getstateid(vp, nfhp->nfh_fh,
nfhp->nfh_len, NFSV4OPEN_ACCESSWRITE, 0,
cred, p, &stateid, &lckp);
}
error = nfsrpc_deallocaterpc(vp, offs, len, &stateid, nap,
attrflagp, cred, p);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (openerr == 0)
nfsrpc_close(vp, 0, p);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_deallocate");
} else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
return (error);
}
/*
* The actual deallocate RPC.
*/
static int
nfsrpc_deallocaterpc(vnode_t vp, off_t offs, off_t len,
nfsv4stateid_t *stateidp, struct nfsvattr *nap, int *attrflagp,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsnode *np = VTONFS(vp);
int error, wccflag;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_DEALLOCATE, vp, cred);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER);
txdr_hyper(offs, tl);
tl += 2;
txdr_hyper(len, tl);
NFSWRITEGETATTR_ATTRBIT(&attrbits);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
wccflag = 0;
error = nfscl_wcc_data(nd, vp, nap, attrflagp, &wccflag, NULL);
if (error != 0)
goto nfsmout;
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
error = nfsm_loadattr(nd, nap);
if (error != 0)
goto nfsmout;
*attrflagp = NFS_LATTR_NOSHRINK;
}
NFSWRITERPC_SETTIME(wccflag, np, nap, 1);
nfsmout:
m_freem(nd->nd_mrep);
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
return (error);
}
/*
* nfs mknod rpc
* For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
* mode set to specify the file type and the size field for rdev.
*/
int
nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
u_int32_t rdev, __enum_uint8(vtype) vtyp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
int *attrflagp, int *dattrflagp)
{
u_int32_t *tl;
int error = 0;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
*nfhpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp, cred);
if (nd->nd_flag & ND_NFSV4) {
if (vtyp == VBLK || vtyp == VCHR) {
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
*tl++ = vtonfsv34_type(vtyp);
*tl++ = txdr_unsigned(NFSMAJOR(rdev));
*tl = txdr_unsigned(NFSMINOR(rdev));
} else {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = vtonfsv34_type(vtyp);
}
}
(void) nfsm_strtom(nd, name, namelen);
if (nd->nd_flag & ND_NFSV3) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = vtonfsv34_type(vtyp);
}
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
nfscl_fillsattr(nd, vap, dvp, 0, 0);
if ((nd->nd_flag & ND_NFSV3) &&
(vtyp == VCHR || vtyp == VBLK)) {
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSMAJOR(rdev));
*tl = txdr_unsigned(NFSMINOR(rdev));
}
if (nd->nd_flag & ND_NFSV4) {
NFSGETATTR_ATTRBIT(&attrbits);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
}
if (nd->nd_flag & ND_NFSV2)
nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (!nd->nd_repstat) {
if (nd->nd_flag & ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error)
goto nfsmout;
}
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
if (error)
goto nfsmout;
}
if (nd->nd_flag & ND_NFSV3)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs file create call
* Mostly just call the approriate routine. (I separated out v4, so that
* error recovery wouldn't be as difficult.)
*/
int
nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
int *attrflagp, int *dattrflagp)
{
int error = 0, newone, expireret = 0, retrycnt, unlocked;
struct nfsclowner *owp;
struct nfscldeleg *dp;
struct nfsmount *nmp = VFSTONFS(dvp->v_mount);
u_int32_t clidrev;
if (NFSHASNFSV4(nmp)) {
retrycnt = 0;
do {
dp = NULL;
error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
NULL, 1, true);
if (error)
return (error);
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
else
clidrev = 0;
if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
nfs_numnfscbd == 0 || retrycnt > 0)
error = nfsrpc_createv4(dvp, name, namelen, vap, cverf,
fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
attrflagp, dattrflagp, &unlocked);
else
error = nfsrpc_getcreatelayout(dvp, name, namelen, vap,
cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
attrflagp, dattrflagp, &unlocked);
/*
* There is no need to invalidate cached attributes here,
* since new post-delegation issue attributes are always
* returned by nfsrpc_createv4() and these will update the
* attribute cache.
*/
if (dp != NULL)
(void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
(*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
nfscl_ownerrelease(nmp, owp, error, newone, unlocked);
if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_open");
} else if ((error == NFSERR_EXPIRED ||
error == NFSERR_BADSTATEID) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
retrycnt++;
}
} while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
} else {
error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp);
}
return (error);
}
/*
* The create rpc for v2 and 3.
*/
static int
nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
int *attrflagp, int *dattrflagp)
{
u_int32_t *tl;
int error = 0;
struct nfsrv_descript nfsd, *nd = &nfsd;
*nfhpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp, cred);
(void) nfsm_strtom(nd, name, namelen);
if (nd->nd_flag & ND_NFSV3) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
if (fmode & O_EXCL) {
*tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
*tl++ = cverf.lval[0];
*tl = cverf.lval[1];
} else {
*tl = txdr_unsigned(NFSCREATE_UNCHECKED);
nfscl_fillsattr(nd, vap, dvp, 0, 0);
}
} else {
nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
}
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_repstat == 0) {
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
if (error)
goto nfsmout;
}
if (nd->nd_flag & ND_NFSV3)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
static int
nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp, int *unlockedp)
{
u_int32_t *tl;
int error = 0, deleg, newone, ret, acesize, limitby;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsclopen *op;
struct nfscldeleg *dp = NULL;
struct nfsnode *np;
struct nfsfh *nfhp;
nfsattrbit_t attrbits;
nfsv4stateid_t stateid;
u_int32_t rflags;
struct nfsmount *nmp;
struct nfsclsession *tsep;
nmp = VFSTONFS(dvp->v_mount);
np = VTONFS(dvp);
*unlockedp = 0;
*nfhpp = NULL;
*dpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp, cred);
/*
* For V4, this is actually an Open op.
*/
NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(owp->nfsow_seqid);
*tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
NFSV4OPEN_ACCESSREAD);
*tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
(void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
if (fmode & O_EXCL) {
if (NFSHASNFSV4N(nmp)) {
if (NFSHASSESSPERSIST(nmp)) {
/* Use GUARDED for persistent sessions. */
*tl = txdr_unsigned(NFSCREATE_GUARDED);
nfscl_fillsattr(nd, vap, dvp, 0, 0);
} else {
/* Otherwise, use EXCLUSIVE4_1. */
*tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
*tl++ = cverf.lval[0];
*tl = cverf.lval[1];
nfscl_fillsattr(nd, vap, dvp, 0, 0);
}
} else {
/* NFSv4.0 */
*tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
*tl++ = cverf.lval[0];
*tl = cverf.lval[1];
}
} else {
*tl = txdr_unsigned(NFSCREATE_UNCHECKED);
nfscl_fillsattr(nd, vap, dvp, 0, 0);
}
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
(void) nfsm_strtom(nd, name, namelen);
/* Get the new file's handle and attributes. */
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
/* Get the directory's post-op attributes. */
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
(void)nfsm_fhtom(nmp, nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
6 * NFSX_UNSIGNED);
stateid.seqid = *tl++;
stateid.other[0] = *tl++;
stateid.other[1] = *tl++;
stateid.other[2] = *tl;
rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error)
goto nfsmout;
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
deleg = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEREAD ||
deleg == NFSV4OPEN_DELEGATEWRITE) {
if (!(owp->nfsow_clp->nfsc_flags &
NFSCLFLAGS_FIRSTDELEG))
owp->nfsow_clp->nfsc_flags |=
(NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
dp = malloc(
sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
M_NFSCLDELEG, M_WAITOK);
LIST_INIT(&dp->nfsdl_owner);
LIST_INIT(&dp->nfsdl_lock);
dp->nfsdl_clp = owp->nfsow_clp;
newnfs_copyincred(cred, &dp->nfsdl_cred);
nfscl_lockinit(&dp->nfsdl_rwlock);
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
NFSX_UNSIGNED);
dp->nfsdl_stateid.seqid = *tl++;
dp->nfsdl_stateid.other[0] = *tl++;
dp->nfsdl_stateid.other[1] = *tl++;
dp->nfsdl_stateid.other[2] = *tl++;
ret = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEWRITE) {
dp->nfsdl_flags = NFSCLDL_WRITE;
/*
* Indicates how much the file can grow.
*/
NFSM_DISSECT(tl, u_int32_t *,
3 * NFSX_UNSIGNED);
limitby = fxdr_unsigned(int, *tl++);
switch (limitby) {
case NFSV4OPEN_LIMITSIZE:
dp->nfsdl_sizelimit = fxdr_hyper(tl);
break;
case NFSV4OPEN_LIMITBLOCKS:
dp->nfsdl_sizelimit =
fxdr_unsigned(u_int64_t, *tl++);
dp->nfsdl_sizelimit *=
fxdr_unsigned(u_int64_t, *tl);
break;
default:
error = NFSERR_BADXDR;
goto nfsmout;
}
} else {
dp->nfsdl_flags = NFSCLDL_READ;
}
if (ret)
dp->nfsdl_flags |= NFSCLDL_RECALL;
error = nfsrv_dissectace(nd, &dp->nfsdl_ace, false,
&ret, &acesize, p);
if (error)
goto nfsmout;
} else if (deleg != NFSV4OPEN_DELEGATENONE) {
error = NFSERR_BADXDR;
goto nfsmout;
}
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
if (error)
goto nfsmout;
/* Get rid of the PutFH and Getattr status values. */
NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
if (error)
goto nfsmout;
*dattrflagp = 1;
if (dp != NULL && *attrflagp) {
dp->nfsdl_change = nnap->na_filerev;
dp->nfsdl_modtime = nnap->na_mtime;
dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
}
/*
* We can now complete the Open state.
*/
nfhp = *nfhpp;
if (dp != NULL) {
dp->nfsdl_fhlen = nfhp->nfh_len;
NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
}
/*
* Get an Open structure that will be
* attached to the OpenOwner, acquired already.
*/
error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
(NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
cred, p, NULL, &op, &newone, NULL, 0, false);
if (error)
goto nfsmout;
op->nfso_stateid = stateid;
newnfs_copyincred(cred, &op->nfso_cred);
if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
do {
ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
nfhp->nfh_len, op, cred, p);
if (ret == NFSERR_DELAY)
(void) nfs_catnap(PZERO, ret, "nfs_create");
} while (ret == NFSERR_DELAY);
error = ret;
}
/*
* If the server is handing out delegations, but we didn't
* get one because an OpenConfirm was required, try the
* Open again, to get a delegation. This is a harmless no-op,
* from a server's point of view.
*/
if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
(owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
!error && dp == NULL) {
do {
ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp,
np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
nfhp->nfh_fh, nfhp->nfh_len,
(NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
if (ret == NFSERR_DELAY)
(void) nfs_catnap(PZERO, ret, "nfs_crt2");
} while (ret == NFSERR_DELAY);
if (ret) {
if (dp != NULL) {
free(dp, M_NFSCLDELEG);
dp = NULL;
}
if (ret == NFSERR_STALECLIENTID ||
ret == NFSERR_STALEDONTRECOVER ||
ret == NFSERR_BADSESSION)
error = ret;
}
}
nfscl_openrelease(nmp, op, error, newone);
*unlockedp = 1;
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(owp->nfsow_clp);
nfsmout:
if (!error)
*dpp = dp;
else if (dp != NULL)
free(dp, M_NFSCLDELEG);
m_freem(nd->nd_mrep);
return (error);
}
/*
* Nfs remove rpc
*/
int
nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsnode *np;
struct nfsmount *nmp;
nfsv4stateid_t dstateid;
int error, ret = 0, i;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
nmp = VFSTONFS(dvp->v_mount);
tryagain:
if (NFSHASNFSV4(nmp) && ret == 0) {
ret = nfscl_removedeleg(vp, p, &dstateid);
if (ret == 1) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
NFSX_UNSIGNED);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = dstateid.seqid;
*tl++ = dstateid.other[0];
*tl++ = dstateid.other[1];
*tl++ = dstateid.other[2];
*tl = txdr_unsigned(NFSV4OP_PUTFH);
np = VTONFS(dvp);
(void)nfsm_fhtom(nmp, nd, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_REMOVE);
}
} else {
ret = 0;
}
if (ret == 0)
NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp, cred);
(void) nfsm_strtom(nd, name, namelen);
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
/* For NFSv4, parse out any Delereturn replies. */
if (ret > 0 && nd->nd_repstat != 0 &&
(nd->nd_flag & ND_NOMOREDATA)) {
/*
* If the Delegreturn failed, try again without
* it. The server will Recall, as required.
*/
m_freem(nd->nd_mrep);
goto tryagain;
}
for (i = 0; i < (ret * 2); i++) {
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1))
nd->nd_flag |= ND_NOMOREDATA;
}
}
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do an nfs rename rpc.
*/
int
nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
int *fattrflagp, int *tattrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
struct nfsnode *np;
nfsattrbit_t attrbits;
nfsv4stateid_t fdstateid, tdstateid;
int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
*fattrflagp = 0;
*tattrflagp = 0;
nmp = VFSTONFS(fdvp->v_mount);
if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
tryagain:
if (NFSHASNFSV4(nmp) && ret == 0) {
ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
&tdstateid, &gottd, p);
if (gotfd && gottd) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp, cred);
} else if (gotfd) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp, cred);
} else if (gottd) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp, cred);
}
if (gotfd) {
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = fdstateid.seqid;
*tl++ = fdstateid.other[0];
*tl++ = fdstateid.other[1];
*tl = fdstateid.other[2];
if (gottd) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
np = VTONFS(tvp);
(void)nfsm_fhtom(nmp, nd, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
}
}
if (gottd) {
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = tdstateid.seqid;
*tl++ = tdstateid.other[0];
*tl++ = tdstateid.other[1];
*tl = tdstateid.other[2];
}
if (ret > 0) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
np = VTONFS(fdvp);
(void)nfsm_fhtom(nmp, nd, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_SAVEFH);
}
} else {
ret = 0;
}
if (ret == 0)
NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp, cred);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSWCCATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
(void)nfsm_fhtom(nmp, nd, VTONFS(tdvp)->n_fhp->nfh_fh,
VTONFS(tdvp)->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_V4WCCATTR;
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_RENAME);
}
(void) nfsm_strtom(nd, fnameptr, fnamelen);
if (!(nd->nd_flag & ND_NFSV4))
(void)nfsm_fhtom(nmp, nd, VTONFS(tdvp)->n_fhp->nfh_fh,
VTONFS(tdvp)->n_fhp->nfh_len, 0);
(void) nfsm_strtom(nd, tnameptr, tnamelen);
error = nfscl_request(nd, fdvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
/* For NFSv4, parse out any Delereturn replies. */
if (ret > 0 && nd->nd_repstat != 0 &&
(nd->nd_flag & ND_NOMOREDATA)) {
/*
* If the Delegreturn failed, try again without
* it. The server will Recall, as required.
*/
m_freem(nd->nd_mrep);
goto tryagain;
}
for (i = 0; i < (ret * 2); i++) {
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1)) {
if (i == 0 && ret > 1) {
/*
* If the Delegreturn failed, try again
* without it. The server will Recall, as
* required.
* If ret > 1, the first iteration of this
* loop is the second DelegReturn result.
*/
m_freem(nd->nd_mrep);
goto tryagain;
} else {
nd->nd_flag |= ND_NOMOREDATA;
}
}
}
}
/* Now, the first wcc attribute reply. */
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1))
nd->nd_flag |= ND_NOMOREDATA;
}
error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, NULL);
/* and the second wcc attribute reply. */
if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
!error) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1))
nd->nd_flag |= ND_NOMOREDATA;
}
if (!error)
error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
NULL, NULL);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs hard link create rpc
*/
int
nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nap, int *attrflagp, int *dattrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
int error = 0;
*attrflagp = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_LINK, vp, cred);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
}
(void)nfsm_fhtom(VFSTONFS(dvp->v_mount), nd, VTONFS(dvp)->n_fhp->nfh_fh,
VTONFS(dvp)->n_fhp->nfh_len, 0);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSWCCATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_V4WCCATTR;
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_LINK);
}
(void) nfsm_strtom(nd, name, namelen);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp);
if (!error)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
NULL, NULL);
} else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
/*
* First, parse out the PutFH and Getattr result.
*/
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (!(*(tl + 1)))
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1))
nd->nd_flag |= ND_NOMOREDATA;
/*
* Get the pre-op attributes.
*/
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs symbolic link create rpc
*/
int
nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target,
struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
int slen, error = 0;
*nfhpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
nmp = VFSTONFS(dvp->v_mount);
slen = strlen(target);
if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp, cred);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFLNK);
(void) nfsm_strtom(nd, target, slen);
}
(void) nfsm_strtom(nd, name, namelen);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
nfscl_fillsattr(nd, vap, dvp, 0, 0);
if (!(nd->nd_flag & ND_NFSV4))
(void) nfsm_strtom(nd, target, slen);
if (nd->nd_flag & ND_NFSV2)
nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if ((nd->nd_flag & ND_NFSV3) && !error) {
if (!nd->nd_repstat)
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
if (!error)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
NULL, NULL);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
/*
* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
* Only do this if vfs.nfs.ignore_eexist is set.
* Never do this for NFSv4.1 or later minor versions, since sessions
* should guarantee "exactly once" RPC semantics.
*/
if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
nmp->nm_minorvers == 0))
error = 0;
return (error);
}
/*
* nfs make dir rpc
*/
int
nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
int error = 0;
struct nfsfh *fhp;
struct nfsmount *nmp;
*nfhpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
nmp = VFSTONFS(dvp->v_mount);
fhp = VTONFS(dvp)->n_fhp;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp, cred);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFDIR);
}
(void) nfsm_strtom(nd, name, namelen);
nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
if (nd->nd_flag & ND_NFSV4) {
NFSGETATTR_ATTRBIT(&attrbits);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
(void)nfsm_fhtom(nmp, nd, fhp->nfh_fh, fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (!nd->nd_repstat && !error) {
if (nd->nd_flag & ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
}
if (!error)
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
/* Get rid of the PutFH and Getattr status values. */
NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
if (error == 0)
*dattrflagp = 1;
}
}
if ((nd->nd_flag & ND_NFSV3) && !error)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
/*
* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
* Only do this if vfs.nfs.ignore_eexist is set.
* Never do this for NFSv4.1 or later minor versions, since sessions
* should guarantee "exactly once" RPC semantics.
*/
if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
nmp->nm_minorvers == 0))
error = 0;
return (error);
}
/*
* nfs remove directory call
*/
int
nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp, cred);
(void) nfsm_strtom(nd, name, namelen);
error = nfscl_request(nd, dvp, p, cred);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
/*
* Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
*/
if (error == ENOENT)
error = 0;
return (error);
}
/*
* Readdir rpc.
* Always returns with either uio_resid unchanged, if you are at the
* end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
* filled in.
* I felt this would allow caching of directory blocks more easily
* than returning a pertially filled block.
* Directory offset cookies:
* Oh my, what to do with them...
* I can think of three ways to deal with them:
* 1 - have the layer above these RPCs maintain a map between logical
* directory byte offsets and the NFS directory offset cookies
* 2 - pass the opaque directory offset cookies up into userland
* and let the libc functions deal with them, via the system call
* 3 - return them to userland in the "struct dirent", so future versions
* of libc can use them and do whatever is necessary to make things work
* above these rpc calls, in the meantime
* For now, I do #3 by "hiding" the directory offset cookies after the
* d_name field in struct dirent. This is space inside d_reclen that
* will be ignored by anything that doesn't know about them.
* The directory offset cookies are filled in as the last 8 bytes of
* each directory entry, after d_name. Someday, the userland libc
* functions may be able to use these. In the meantime, it satisfies
* OpenBSD's requirements for cookies being returned.
* If expects the directory offset cookie for the read to be in uio_offset
* and returns the one for the next entry after this directory block in
* there, as well.
*/
int
nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
int *eofp)
{
int len, left;
struct dirent *dp = NULL;
u_int32_t *tl;
nfsquad_t cookie, ncookie;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *dnp = VTONFS(vp);
struct nfsvattr nfsva;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
char *cp;
nfsattrbit_t attrbits, dattrbits;
u_int32_t rderr, *tl2 = NULL;
size_t tresid;
KASSERT(uiop->uio_iovcnt == 1 &&
(uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
("nfs readdirrpc bad uio"));
ncookie.lval[0] = ncookie.lval[1] = 0;
/*
* There is no point in reading a lot more than uio_resid, however
* adding one additional DIRBLKSIZ makes sense. Since uio_resid
* and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
* will never make readsize > nm_readdirsize.
*/
readsize = nmp->nm_readdirsize;
if (readsize > uiop->uio_resid)
readsize = uiop->uio_resid + DIRBLKSIZ;
*attrflagp = 0;
if (eofp)
*eofp = 0;
tresid = uiop->uio_resid;
cookie.lval[0] = cookiep->nfsuquad[0];
cookie.lval[1] = cookiep->nfsuquad[1];
nd->nd_mrep = NULL;
/*
* For NFSv4, first create the "." and ".." entries.
*/
if (NFSHASNFSV4(nmp)) {
reqsize = 6 * NFSX_UNSIGNED;
NFSGETATTR_ATTRBIT(&dattrbits);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
NFSATTRBIT_MOUNTEDONFILEID)) {
NFSSETBIT_ATTRBIT(&attrbits,
NFSATTRBIT_MOUNTEDONFILEID);
gotmnton = 1;
} else {
/*
* Must fake it. Use the fileno, except when the
* fsid is != to that of the directory. For that
* case, generate a fake fileno that is not the same.
*/
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
gotmnton = 0;
}
/*
* Joy, oh joy. For V4 we get to hand craft '.' and '..'.
*/
if (uiop->uio_offset == 0) {
NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp, cred);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
dotfileid = 0; /* Fake out the compiler. */
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
error = nfsm_loadattr(nd, &nfsva);
if (error != 0)
goto nfsmout;
dotfileid = nfsva.na_fileid;
}
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
len = fxdr_unsigned(int, *(tl + 4));
if (len > 0 && len <= NFSX_V4FHMAX)
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
else
error = EPERM;
if (!error) {
NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
nfsva.na_mntonfileno = UINT64_MAX;
error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, NULL, p, cred);
if (error) {
dotdotfileid = dotfileid;
} else if (gotmnton) {
if (nfsva.na_mntonfileno != UINT64_MAX)
dotdotfileid = nfsva.na_mntonfileno;
else
dotdotfileid = nfsva.na_fileid;
} else if (nfsva.na_filesid[0] ==
dnp->n_vattr.na_filesid[0] &&
nfsva.na_filesid[1] ==
dnp->n_vattr.na_filesid[1]) {
dotdotfileid = nfsva.na_fileid;
} else {
do {
fakefileno--;
} while (fakefileno ==
nfsva.na_fileid);
dotdotfileid = fakefileno;
}
}
} else if (nd->nd_repstat == NFSERR_NOENT) {
/*
* Lookupp returns NFSERR_NOENT when we are
* at the root, so just use the current dir.
*/
nd->nd_repstat = 0;
dotdotfileid = dotfileid;
} else {
error = nd->nd_repstat;
}
m_freem(nd->nd_mrep);
if (error)
return (error);
nd->nd_mrep = NULL;
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_type = DT_DIR;
dp->d_fileno = dotfileid;
dp->d_namlen = 1;
*((uint64_t *)dp->d_name) = 0; /* Zero pad it. */
dp->d_name[0] = '.';
dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[8];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uiop->uio_resid -= dp->d_reclen;
uiop->uio_offset += dp->d_reclen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + dp->d_reclen;
uiop->uio_iov->iov_len -= dp->d_reclen;
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_type = DT_DIR;
dp->d_fileno = dotdotfileid;
dp->d_namlen = 2;
*((uint64_t *)dp->d_name) = 0;
dp->d_name[0] = '.';
dp->d_name[1] = '.';
dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[8];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uiop->uio_resid -= dp->d_reclen;
uiop->uio_offset += dp->d_reclen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + dp->d_reclen;
uiop->uio_iov->iov_len -= dp->d_reclen;
}
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
} else {
reqsize = 5 * NFSX_UNSIGNED;
}
/*
* Loop around doing readdir rpc's of size readsize.
* The stopping criteria is EOF or buffer full.
*/
while (more_dirs && bigenough) {
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_READDIR, vp, cred);
if (nd->nd_flag & ND_NFSV2) {
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = cookie.lval[1];
*tl = txdr_unsigned(readsize);
} else {
NFSM_BUILD(tl, u_int32_t *, reqsize);
*tl++ = cookie.lval[0];
*tl++ = cookie.lval[1];
if (cookie.qval == 0) {
*tl++ = 0;
*tl++ = 0;
} else {
NFSLOCKNODE(dnp);
*tl++ = dnp->n_cookieverf.nfsuquad[0];
*tl++ = dnp->n_cookieverf.nfsuquad[1];
NFSUNLOCKNODE(dnp);
}
if (nd->nd_flag & ND_NFSV4) {
*tl++ = txdr_unsigned(readsize);
*tl = txdr_unsigned(readsize);
(void) nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &dattrbits);
} else {
*tl = txdr_unsigned(readsize);
}
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (!(nd->nd_flag & ND_NFSV2)) {
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp);
if (!nd->nd_repstat && !error) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
NFSLOCKNODE(dnp);
dnp->n_cookieverf.nfsuquad[0] = *tl++;
dnp->n_cookieverf.nfsuquad[1] = *tl;
NFSUNLOCKNODE(dnp);
}
}
if (nd->nd_repstat || error) {
if (!error)
error = nd->nd_repstat;
goto nfsmout;
}
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
more_dirs = fxdr_unsigned(int, *tl);
if (!more_dirs)
tryformoredirs = 0;
/* loop through the dir entries, doctoring them to 4bsd form */
while (more_dirs && bigenough) {
if (nd->nd_flag & ND_NFSV4) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
ncookie.lval[0] = *tl++;
ncookie.lval[1] = *tl++;
len = fxdr_unsigned(int, *tl);
} else if (nd->nd_flag & ND_NFSV3) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
nfsva.na_fileid = fxdr_hyper(tl);
tl += 2;
len = fxdr_unsigned(int, *tl);
} else {
NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
nfsva.na_fileid = fxdr_unsigned(uint64_t,
*tl++);
len = fxdr_unsigned(int, *tl);
}
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
goto nfsmout;
}
tlen = roundup2(len, 8);
if (tlen == len)
tlen += 8; /* To ensure null termination. */
left = DIRBLKSIZ - blksiz;
if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
NFSBZERO(uiop->uio_iov->iov_base, left);
dp->d_reclen += left;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + left;
uiop->uio_iov->iov_len -= left;
uiop->uio_resid -= left;
uiop->uio_offset += left;
blksiz = 0;
}
if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
uiop->uio_resid)
bigenough = 0;
if (bigenough) {
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_namlen = len;
dp->d_reclen = _GENERIC_DIRLEN(len) +
NFSX_HYPER;
dp->d_type = DT_UNKNOWN;
blksiz += dp->d_reclen;
if (blksiz == DIRBLKSIZ)
blksiz = 0;
uiop->uio_resid -= DIRHDSIZ;
uiop->uio_offset += DIRHDSIZ;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + DIRHDSIZ;
uiop->uio_iov->iov_len -= DIRHDSIZ;
error = nfsm_mbufuio(nd, uiop, len);
if (error)
goto nfsmout;
cp = uiop->uio_iov->iov_base;
tlen -= len;
NFSBZERO(cp, tlen);
cp += tlen; /* points to cookie storage */
tl2 = (u_int32_t *)cp;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + tlen +
NFSX_HYPER;
uiop->uio_iov->iov_len -= tlen + NFSX_HYPER;
uiop->uio_resid -= tlen + NFSX_HYPER;
uiop->uio_offset += (tlen + NFSX_HYPER);
} else {
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
if (error)
goto nfsmout;
}
if (nd->nd_flag & ND_NFSV4) {
rderr = 0;
nfsva.na_mntonfileno = UINT64_MAX;
error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, &rderr, p, cred);
if (error)
goto nfsmout;
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
} else if (nd->nd_flag & ND_NFSV3) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
ncookie.lval[0] = *tl++;
ncookie.lval[1] = *tl++;
} else {
NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
ncookie.lval[0] = 0;
ncookie.lval[1] = *tl++;
}
if (bigenough) {
if (nd->nd_flag & ND_NFSV4) {
if (rderr) {
dp->d_fileno = 0;
} else {
if (gotmnton) {
if (nfsva.na_mntonfileno != UINT64_MAX)
dp->d_fileno = nfsva.na_mntonfileno;
else
dp->d_fileno = nfsva.na_fileid;
} else if (nfsva.na_filesid[0] ==
dnp->n_vattr.na_filesid[0] &&
nfsva.na_filesid[1] ==
dnp->n_vattr.na_filesid[1]) {
dp->d_fileno = nfsva.na_fileid;
} else {
do {
fakefileno--;
} while (fakefileno ==
nfsva.na_fileid);
dp->d_fileno = fakefileno;
}
dp->d_type = vtonfs_dtype(nfsva.na_type);
}
} else {
dp->d_fileno = nfsva.na_fileid;
}
*tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
ncookie.lval[0];
*tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
ncookie.lval[1];
}
more_dirs = fxdr_unsigned(int, *tl);
}
/*
* If at end of rpc data, get the eof boolean
*/
if (!more_dirs) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
eof = fxdr_unsigned(int, *tl);
if (tryformoredirs)
more_dirs = !eof;
if (nd->nd_flag & ND_NFSV4) {
error = nfscl_postop_attr(nd, nap, attrflagp);
if (error)
goto nfsmout;
}
}
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
}
/*
* Fill last record, iff any, out to a multiple of DIRBLKSIZ
* by increasing d_reclen for the last record.
*/
if (blksiz > 0) {
left = DIRBLKSIZ - blksiz;
NFSBZERO(uiop->uio_iov->iov_base, left);
dp->d_reclen += left;
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
left;
uiop->uio_iov->iov_len -= left;
uiop->uio_resid -= left;
uiop->uio_offset += left;
}
/*
* If returning no data, assume end of file.
* If not bigenough, return not end of file, since you aren't
* returning all the data
* Otherwise, return the eof flag from the server.
*/
if (eofp) {
if (tresid == ((size_t)(uiop->uio_resid)))
*eofp = 1;
else if (!bigenough)
*eofp = 0;
else
*eofp = eof;
}
/*
* Add extra empty records to any remaining DIRBLKSIZ chunks.
*/
while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) {
dp = (struct dirent *)uiop->uio_iov->iov_base;
NFSBZERO(dp, DIRBLKSIZ);
dp->d_type = DT_UNKNOWN;
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = cookie.lval[0];
*tl = cookie.lval[1];
dp->d_reclen = DIRBLKSIZ;
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
DIRBLKSIZ;
uiop->uio_iov->iov_len -= DIRBLKSIZ;
uiop->uio_resid -= DIRBLKSIZ;
uiop->uio_offset += DIRBLKSIZ;
}
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
return (error);
}
/*
* NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
* (Also used for NFS V4 when mount flag set.)
* (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
*/
int
nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
int *eofp)
{
int len, left;
struct dirent *dp = NULL;
u_int32_t *tl;
vnode_t newvp = NULLVP;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nameidata nami, *ndp = &nami;
struct componentname *cnp = &ndp->ni_cnd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *dnp = VTONFS(vp), *np;
struct nfsvattr nfsva;
struct nfsfh *nfhp;
nfsquad_t cookie, ncookie;
int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
int isdotdot = 0, unlocknewvp = 0;
u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
u_int64_t fileno = 0;
char *cp;
nfsattrbit_t attrbits, dattrbits;
size_t tresid;
u_int32_t *tl2 = NULL, rderr;
struct timespec dctime, ts;
bool attr_ok;
KASSERT(uiop->uio_iovcnt == 1 &&
(uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
("nfs readdirplusrpc bad uio"));
ncookie.lval[0] = ncookie.lval[1] = 0;
timespecclear(&dctime);
*attrflagp = 0;
if (eofp != NULL)
*eofp = 0;
ndp->ni_dvp = vp;
nd->nd_mrep = NULL;
cookie.lval[0] = cookiep->nfsuquad[0];
cookie.lval[1] = cookiep->nfsuquad[1];
tresid = uiop->uio_resid;
/*
* For NFSv4, first create the "." and ".." entries.
*/
if (NFSHASNFSV4(nmp)) {
NFSGETATTR_ATTRBIT(&dattrbits);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
NFSATTRBIT_MOUNTEDONFILEID)) {
NFSSETBIT_ATTRBIT(&attrbits,
NFSATTRBIT_MOUNTEDONFILEID);
gotmnton = 1;
} else {
/*
* Must fake it. Use the fileno, except when the
* fsid is != to that of the directory. For that
* case, generate a fake fileno that is not the same.
*/
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
gotmnton = 0;
}
/*
* Joy, oh joy. For V4 we get to hand craft '.' and '..'.
*/
if (uiop->uio_offset == 0) {
NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp, cred);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
dotfileid = 0; /* Fake out the compiler. */
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
error = nfsm_loadattr(nd, &nfsva);
if (error != 0)
goto nfsmout;
dctime = nfsva.na_ctime;
dotfileid = nfsva.na_fileid;
}
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
len = fxdr_unsigned(int, *(tl + 4));
if (len > 0 && len <= NFSX_V4FHMAX)
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
else
error = EPERM;
if (!error) {
NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
nfsva.na_mntonfileno = UINT64_MAX;
error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, NULL, p, cred);
if (error) {
dotdotfileid = dotfileid;
} else if (gotmnton) {
if (nfsva.na_mntonfileno != UINT64_MAX)
dotdotfileid = nfsva.na_mntonfileno;
else
dotdotfileid = nfsva.na_fileid;
} else if (nfsva.na_filesid[0] ==
dnp->n_vattr.na_filesid[0] &&
nfsva.na_filesid[1] ==
dnp->n_vattr.na_filesid[1]) {
dotdotfileid = nfsva.na_fileid;
} else {
do {
fakefileno--;
} while (fakefileno ==
nfsva.na_fileid);
dotdotfileid = fakefileno;
}
}
} else if (nd->nd_repstat == NFSERR_NOENT) {
/*
* Lookupp returns NFSERR_NOENT when we are
* at the root, so just use the current dir.
*/
nd->nd_repstat = 0;
dotdotfileid = dotfileid;
} else {
error = nd->nd_repstat;
}
m_freem(nd->nd_mrep);
if (error)
return (error);
nd->nd_mrep = NULL;
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_type = DT_DIR;
dp->d_fileno = dotfileid;
dp->d_namlen = 1;
*((uint64_t *)dp->d_name) = 0; /* Zero pad it. */
dp->d_name[0] = '.';
dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[8];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uiop->uio_resid -= dp->d_reclen;
uiop->uio_offset += dp->d_reclen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + dp->d_reclen;
uiop->uio_iov->iov_len -= dp->d_reclen;
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_type = DT_DIR;
dp->d_fileno = dotdotfileid;
dp->d_namlen = 2;
*((uint64_t *)dp->d_name) = 0;
dp->d_name[0] = '.';
dp->d_name[1] = '.';
dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[8];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uiop->uio_resid -= dp->d_reclen;
uiop->uio_offset += dp->d_reclen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + dp->d_reclen;
uiop->uio_iov->iov_len -= dp->d_reclen;
}
NFSREADDIRPLUS_ATTRBIT(&attrbits);
if (gotmnton)
NFSSETBIT_ATTRBIT(&attrbits,
NFSATTRBIT_MOUNTEDONFILEID);
if (!NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
NFSATTRBIT_TIMECREATE))
NFSCLRBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMECREATE);
}
/*
* Loop around doing readdir rpc's of size nm_readdirsize.
* The stopping criteria is EOF or buffer full.
*/
while (more_dirs && bigenough) {
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp, cred);
NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
*tl++ = cookie.lval[0];
*tl++ = cookie.lval[1];
if (cookie.qval == 0) {
*tl++ = 0;
*tl++ = 0;
} else {
NFSLOCKNODE(dnp);
*tl++ = dnp->n_cookieverf.nfsuquad[0];
*tl++ = dnp->n_cookieverf.nfsuquad[1];
NFSUNLOCKNODE(dnp);
}
*tl++ = txdr_unsigned(nmp->nm_readdirsize);
*tl = txdr_unsigned(nmp->nm_readdirsize);
if (nd->nd_flag & ND_NFSV4) {
(void) nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
(void) nfsrv_putattrbit(nd, &dattrbits);
}
nanouptime(&ts);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp);
if (nd->nd_repstat || error) {
if (!error)
error = nd->nd_repstat;
goto nfsmout;
}
if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
dctime = nap->na_ctime;
NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
NFSLOCKNODE(dnp);
dnp->n_cookieverf.nfsuquad[0] = *tl++;
dnp->n_cookieverf.nfsuquad[1] = *tl++;
NFSUNLOCKNODE(dnp);
more_dirs = fxdr_unsigned(int, *tl);
if (!more_dirs)
tryformoredirs = 0;
/* loop through the dir entries, doctoring them to 4bsd form */
while (more_dirs && bigenough) {
NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
if (nd->nd_flag & ND_NFSV4) {
ncookie.lval[0] = *tl++;
ncookie.lval[1] = *tl++;
} else {
fileno = fxdr_hyper(tl);
tl += 2;
}
len = fxdr_unsigned(int, *tl);
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
goto nfsmout;
}
tlen = roundup2(len, 8);
if (tlen == len)
tlen += 8; /* To ensure null termination. */
left = DIRBLKSIZ - blksiz;
if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
NFSBZERO(uiop->uio_iov->iov_base, left);
dp->d_reclen += left;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + left;
uiop->uio_iov->iov_len -= left;
uiop->uio_resid -= left;
uiop->uio_offset += left;
blksiz = 0;
}
if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
uiop->uio_resid)
bigenough = 0;
if (bigenough) {
dp = (struct dirent *)uiop->uio_iov->iov_base;
dp->d_pad0 = dp->d_pad1 = 0;
dp->d_off = 0;
dp->d_namlen = len;
dp->d_reclen = _GENERIC_DIRLEN(len) +
NFSX_HYPER;
dp->d_type = DT_UNKNOWN;
blksiz += dp->d_reclen;
if (blksiz == DIRBLKSIZ)
blksiz = 0;
uiop->uio_resid -= DIRHDSIZ;
uiop->uio_offset += DIRHDSIZ;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + DIRHDSIZ;
uiop->uio_iov->iov_len -= DIRHDSIZ;
cnp->cn_nameptr = uiop->uio_iov->iov_base;
cnp->cn_namelen = len;
NFSCNHASHZERO(cnp);
error = nfsm_mbufuio(nd, uiop, len);
if (error)
goto nfsmout;
cp = uiop->uio_iov->iov_base;
tlen -= len;
NFSBZERO(cp, tlen);
cp += tlen; /* points to cookie storage */
tl2 = (u_int32_t *)cp;
if (len == 2 && cnp->cn_nameptr[0] == '.' &&
cnp->cn_nameptr[1] == '.')
isdotdot = 1;
else
isdotdot = 0;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base + tlen +
NFSX_HYPER;
uiop->uio_iov->iov_len -= tlen + NFSX_HYPER;
uiop->uio_resid -= tlen + NFSX_HYPER;
uiop->uio_offset += (tlen + NFSX_HYPER);
} else {
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
if (error)
goto nfsmout;
}
nfhp = NULL;
if (nd->nd_flag & ND_NFSV3) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
ncookie.lval[0] = *tl++;
ncookie.lval[1] = *tl++;
attrflag = fxdr_unsigned(int, *tl);
if (attrflag) {
error = nfsm_loadattr(nd, &nfsva);
if (error)
goto nfsmout;
}
NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
if (*tl) {
error = nfsm_getfh(nd, &nfhp);
if (error)
goto nfsmout;
}
if (!attrflag && nfhp != NULL) {
free(nfhp, M_NFSFH);
nfhp = NULL;
}
} else {
rderr = 0;
nfsva.na_mntonfileno = 0xffffffff;
error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, &rderr, p, cred);
if (error)
goto nfsmout;
}
if (bigenough) {
if (nd->nd_flag & ND_NFSV4) {
if (rderr) {
dp->d_fileno = 0;
} else if (gotmnton) {
if (nfsva.na_mntonfileno != 0xffffffff)
dp->d_fileno = nfsva.na_mntonfileno;
else
dp->d_fileno = nfsva.na_fileid;
} else if (nfsva.na_filesid[0] ==
dnp->n_vattr.na_filesid[0] &&
nfsva.na_filesid[1] ==
dnp->n_vattr.na_filesid[1]) {
dp->d_fileno = nfsva.na_fileid;
} else {
do {
fakefileno--;
} while (fakefileno ==
nfsva.na_fileid);
dp->d_fileno = fakefileno;
}
} else {
dp->d_fileno = fileno;
}
*tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
ncookie.lval[0];
*tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
ncookie.lval[1];
if (nfhp != NULL) {
attr_ok = true;
if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
VREF(vp);
newvp = vp;
unlocknewvp = 0;
free(nfhp, M_NFSFH);
np = dnp;
} else if (isdotdot != 0) {
/*
* Skip doing a nfscl_nget() call for "..".
* There's a race between acquiring the nfs
* node here and lookups that look for the
* directory being read (in the parent).
* It would try to get a lock on ".." here,
* owning the lock on the directory being
* read. Lookup will hold the lock on ".."
* and try to acquire the lock on the
* directory being read.
* If the directory is unlocked/relocked,
* then there is a LOR with the buflock
* vp is relocked.
*/
free(nfhp, M_NFSFH);
} else {
error = nfscl_nget(vp->v_mount, vp,
nfhp, cnp, p, &np, LK_EXCLUSIVE);
if (!error) {
newvp = NFSTOV(np);
unlocknewvp = 1;
/*
* If n_localmodtime >= time before RPC,
* then a file modification operation,
* such as VOP_SETATTR() of size, has
* occurred while the Lookup RPC and
* acquisition of the vnode happened. As
* such, the attributes might be stale,
* with possibly an incorrect size.
*/
NFSLOCKNODE(np);
if (timespecisset(
&np->n_localmodtime) &&
timespeccmp(&np->n_localmodtime,
&ts, >=)) {
NFSCL_DEBUG(4, "nfsrpc_readdirplus:"
" localmod stale attributes\n");
attr_ok = false;
}
NFSUNLOCKNODE(np);
}
}
nfhp = NULL;
if (newvp != NULLVP) {
if (attr_ok)
error = nfscl_loadattrcache(&newvp,
&nfsva, NULL, 0, 0);
if (error) {
if (unlocknewvp)
vput(newvp);
else
vrele(newvp);
goto nfsmout;
}
dp->d_type =
vtonfs_dtype(np->n_vattr.na_type);
ndp->ni_vp = newvp;
NFSCNHASH(cnp, HASHINIT);
if (cnp->cn_namelen <= NCHNAMLEN &&
ndp->ni_dvp != ndp->ni_vp &&
(newvp->v_type != VDIR ||
dctime.tv_sec != 0)) {
cache_enter_time_flags(ndp->ni_dvp,
ndp->ni_vp, cnp,
&nfsva.na_ctime,
newvp->v_type != VDIR ? NULL :
&dctime, VFS_CACHE_DROPOLD);
}
if (unlocknewvp)
vput(newvp);
else
vrele(newvp);
newvp = NULLVP;
}
}
} else if (nfhp != NULL) {
free(nfhp, M_NFSFH);
}
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
more_dirs = fxdr_unsigned(int, *tl);
}
/*
* If at end of rpc data, get the eof boolean
*/
if (!more_dirs) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
eof = fxdr_unsigned(int, *tl);
if (tryformoredirs)
more_dirs = !eof;
if (nd->nd_flag & ND_NFSV4) {
error = nfscl_postop_attr(nd, nap, attrflagp);
if (error)
goto nfsmout;
}
}
m_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
}
/*
* Fill last record, iff any, out to a multiple of DIRBLKSIZ
* by increasing d_reclen for the last record.
*/
if (blksiz > 0) {
left = DIRBLKSIZ - blksiz;
NFSBZERO(uiop->uio_iov->iov_base, left);
dp->d_reclen += left;
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
left;
uiop->uio_iov->iov_len -= left;
uiop->uio_resid -= left;
uiop->uio_offset += left;
}
/*
* If returning no data, assume end of file.
* If not bigenough, return not end of file, since you aren't
* returning all the data
* Otherwise, return the eof flag from the server.
*/
if (eofp != NULL) {
if (tresid == uiop->uio_resid)
*eofp = 1;
else if (!bigenough)
*eofp = 0;
else
*eofp = eof;
}
/*
* Add extra empty records to any remaining DIRBLKSIZ chunks.
*/
while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) {
dp = (struct dirent *)uiop->uio_iov->iov_base;
NFSBZERO(dp, DIRBLKSIZ);
dp->d_type = DT_UNKNOWN;
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = cookie.lval[0];
*tl = cookie.lval[1];
dp->d_reclen = DIRBLKSIZ;
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
DIRBLKSIZ;
uiop->uio_iov->iov_len -= DIRBLKSIZ;
uiop->uio_resid -= DIRBLKSIZ;
uiop->uio_offset += DIRBLKSIZ;
}
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
return (error);
}
/*
* Nfs commit rpc
*/
int
nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
int error;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp, cred);
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
txdr_hyper(offset, tl);
tl += 2;
*tl = txdr_unsigned(cnt);
if (nd->nd_flag & ND_NFSV4) {
/*
* And do a Getattr op.
*/
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, NULL);
if (!error && !nd->nd_repstat) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
NFSLOCKMNT(nmp);
if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
nd->nd_repstat = NFSERR_STALEWRITEVERF;
}
NFSUNLOCKMNT(nmp);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_postop_attr(nd, nap, attrflagp);
}
nfsmout:
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* NFS byte range lock rpc.
* (Mostly just calls one of the three lower level RPC routines.)
*/
int
nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
{
struct nfscllockowner *lp;
struct nfsclclient *clp;
struct nfsfh *nfhp;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
u_int64_t off, len;
off_t start, end;
u_int32_t clidrev = 0;
int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
int callcnt, dorpc;
/*
* Convert the flock structure into a start and end and do POSIX
* bounds checking.
*/
switch (fl->l_whence) {
case SEEK_SET:
case SEEK_CUR:
/*
* Caller is responsible for adding any necessary offset
* when SEEK_CUR is used.
*/
start = fl->l_start;
off = fl->l_start;
break;
case SEEK_END:
start = size + fl->l_start;
off = size + fl->l_start;
break;
default:
return (EINVAL);
}
if (start < 0)
return (EINVAL);
if (fl->l_len != 0) {
end = start + fl->l_len - 1;
if (end < start)
return (EINVAL);
}
len = fl->l_len;
if (len == 0)
len = NFS64BITSSET;
retrycnt = 0;
do {
nd->nd_repstat = 0;
if (op == F_GETLK) {
error = nfscl_getcl(vp->v_mount, cred, p, false, true, &clp);
if (error)
return (error);
error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
if (!error) {
clidrev = clp->nfsc_clientidrev;
error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
p, id, flags);
} else if (error == -1) {
error = 0;
}
nfscl_clientrelease(clp);
} else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
/*
* We must loop around for all lockowner cases.
*/
callcnt = 0;
error = nfscl_getcl(vp->v_mount, cred, p, false, true, &clp);
if (error)
return (error);
do {
error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
clp, id, flags, &lp, &dorpc);
/*
* If it returns a NULL lp, we're done.
*/
if (lp == NULL) {
if (callcnt == 0)
nfscl_clientrelease(clp);
else
nfscl_releasealllocks(clp, vp, p, id, flags);
return (error);
}
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
else
clidrev = 0;
/*
* If the server doesn't support Posix lock semantics,
* only allow locks on the entire file, since it won't
* handle overlapping byte ranges.
* There might still be a problem when a lock
* upgrade/downgrade (read<->write) occurs, since the
* server "might" expect an unlock first?
*/
if (dorpc && (lp->nfsl_open->nfso_posixlock ||
(off == 0 && len == NFS64BITSSET))) {
/*
* Since the lock records will go away, we must
* wait for grace and delay here.
*/
do {
error = nfsrpc_locku(nd, nmp, lp, off, len,
NFSV4LOCKT_READ, cred, p, 0);
if ((nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_DELAY) &&
error == 0)
(void) nfs_catnap(PZERO, (int)nd->nd_repstat,
"nfs_advlock");
} while ((nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_DELAY) && error == 0);
}
callcnt++;
} while (error == 0 && nd->nd_repstat == 0);
nfscl_releasealllocks(clp, vp, p, id, flags);
} else if (op == F_SETLK) {
error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
if (error || donelocally) {
return (error);
}
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
else
clidrev = 0;
nfhp = VTONFS(vp)->n_fhp;
if (!lp->nfsl_open->nfso_posixlock &&
(off != 0 || len != NFS64BITSSET)) {
error = EINVAL;
} else {
error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
nfhp->nfh_len, lp, newone, reclaim, off,
len, fl->l_type, cred, p, 0);
}
if (!error)
error = nd->nd_repstat;
nfscl_lockrelease(lp, error, newone);
} else {
error = EINVAL;
}
if (!error)
error = nd->nd_repstat;
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER ||
error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_advlock");
} else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
&& clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
retrycnt++;
}
} while (error == NFSERR_GRACE ||
error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
error == NFSERR_BADSESSION ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
return (error);
}
/*
* The lower level routine for the LockT case.
*/
int
nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
struct ucred *cred, NFSPROC_T *p, void *id, int flags)
{
u_int32_t *tl;
int error, type, size;
uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
struct nfsnode *np;
struct nfsmount *nmp;
struct nfsclsession *tsep;
nmp = VFSTONFS(vp->v_mount);
NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp, cred);
NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
if (fl->l_type == F_RDLCK)
*tl++ = txdr_unsigned(NFSV4LOCKT_READ);
else
*tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
txdr_hyper(off, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
nfscl_filllockowner(id, own, flags);
np = VTONFS(vp);
NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
np->n_fhp->nfh_len);
(void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_repstat == 0) {
fl->l_type = F_UNLCK;
} else if (nd->nd_repstat == NFSERR_DENIED) {
nd->nd_repstat = 0;
fl->l_whence = SEEK_SET;
NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
fl->l_start = fxdr_hyper(tl);
tl += 2;
len = fxdr_hyper(tl);
tl += 2;
if (len == NFS64BITSSET)
fl->l_len = 0;
else
fl->l_len = len;
type = fxdr_unsigned(int, *tl++);
if (type == NFSV4LOCKT_WRITE)
fl->l_type = F_WRLCK;
else
fl->l_type = F_RDLCK;
/*
* XXX For now, I have no idea what to do with the
* conflicting lock_owner, so I'll just set the pid == 0
* and skip over the lock_owner.
*/
fl->l_pid = (pid_t)0;
tl += 2;
size = fxdr_unsigned(int, *tl);
if (size < 0 || size > NFSV4_OPAQUELIMIT)
error = EBADRPC;
if (!error)
error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
} else if (nd->nd_repstat == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Lower level function that performs the LockU RPC.
*/
static int
nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
{
u_int32_t *tl;
int error;
nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(type);
*tl = txdr_unsigned(lp->nfsl_seqid);
if (nfstest_outofseq &&
(arc4random() % nfstest_outofseq) == 0)
*tl = txdr_unsigned(lp->nfsl_seqid + 1);
tl++;
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = lp->nfsl_stateid.seqid;
*tl++ = lp->nfsl_stateid.other[0];
*tl++ = lp->nfsl_stateid.other[1];
*tl++ = lp->nfsl_stateid.other[2];
txdr_hyper(off, tl);
tl += 2;
txdr_hyper(len, tl);
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
if (error)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
lp->nfsl_stateid.seqid = *tl++;
lp->nfsl_stateid.other[0] = *tl++;
lp->nfsl_stateid.other[1] = *tl++;
lp->nfsl_stateid.other[2] = *tl;
} else if (nd->nd_repstat == NFSERR_STALESTATEID)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* The actual Lock RPC.
*/
int
nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
NFSPROC_T *p, int syscred)
{
u_int32_t *tl;
int error, size;
uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
struct nfsclsession *tsep;
nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0,
cred);
NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
if (type == F_RDLCK)
*tl++ = txdr_unsigned(NFSV4LOCKT_READ);
else
*tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
*tl++ = txdr_unsigned(reclaim);
txdr_hyper(off, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
if (newone) {
*tl = newnfs_true;
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2 * NFSX_UNSIGNED + NFSX_HYPER);
*tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = lp->nfsl_open->nfso_stateid.seqid;
*tl++ = lp->nfsl_open->nfso_stateid.other[0];
*tl++ = lp->nfsl_open->nfso_stateid.other[1];
*tl++ = lp->nfsl_open->nfso_stateid.other[2];
*tl++ = txdr_unsigned(lp->nfsl_seqid);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
(void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
} else {
*tl = newnfs_false;
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = lp->nfsl_stateid.seqid;
*tl++ = lp->nfsl_stateid.other[0];
*tl++ = lp->nfsl_stateid.other[1];
*tl++ = lp->nfsl_stateid.other[2];
*tl = txdr_unsigned(lp->nfsl_seqid);
if (nfstest_outofseq &&
(arc4random() % nfstest_outofseq) == 0)
*tl = txdr_unsigned(lp->nfsl_seqid + 1);
}
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
if (newone)
NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
lp->nfsl_stateid.seqid = *tl++;
lp->nfsl_stateid.other[0] = *tl++;
lp->nfsl_stateid.other[1] = *tl++;
lp->nfsl_stateid.other[2] = *tl;
} else if (nd->nd_repstat == NFSERR_DENIED) {
NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
size = fxdr_unsigned(int, *(tl + 7));
if (size < 0 || size > NFSV4_OPAQUELIMIT)
error = EBADRPC;
if (!error)
error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
} else if (nd->nd_repstat == NFSERR_STALESTATEID)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs statfs rpc
* (always called with the vp for the mount point)
*/
int
nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
uint32_t *leasep, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap,
int *attrflagp)
{
u_int32_t *tl = NULL;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
nfsattrbit_t attrbits;
int error;
*attrflagp = 0;
nmp = VFSTONFS(vp->v_mount);
if (NFSHASNFSV4(nmp)) {
/*
* For V4, you actually do a getattr.
*/
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred);
if (leasep != NULL)
NFSROOTFS_GETATTRBIT(&attrbits);
else
NFSSTATFS_GETATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_USEGSSNAME;
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_repstat == 0) {
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
NULL, NULL, sbp, fsp, NULL, 0, NULL, leasep, NULL,
p, cred);
if (!error) {
nmp->nm_fsid[0] = nap->na_filesid[0];
nmp->nm_fsid[1] = nap->na_filesid[1];
NFSSETHASSETFSID(nmp);
*attrflagp = 1;
}
} else {
error = nd->nd_repstat;
}
if (error)
goto nfsmout;
} else {
NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp, NULL);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp);
if (error)
goto nfsmout;
}
if (nd->nd_repstat) {
error = nd->nd_repstat;
goto nfsmout;
}
NFSM_DISSECT(tl, u_int32_t *,
NFSX_STATFS(nd->nd_flag & ND_NFSV3));
}
if (NFSHASNFSV3(nmp)) {
sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
} else if (NFSHASNFSV4(nmp) == 0) {
sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
}
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs pathconf rpc
*/
int
nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
u_int32_t *tl;
nfsattrbit_t attrbits;
int error;
struct nfsnode *np;
*attrflagp = 0;
nmp = VFSTONFS(vp->v_mount);
if (NFSHASNFSV4(nmp)) {
np = VTONFS(vp);
if ((nmp->nm_privflag & NFSMNTP_FAKEROOTFH) != 0 &&
nmp->nm_fhsize == 0) {
/* Attempt to get the actual root file handle. */
error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp),
cred, p);
if (error != 0)
return (EACCES);
if (np->n_fhp->nfh_len == NFSX_FHMAX + 1)
nfscl_statfs(vp, cred, p);
}
/*
* For V4, you actually do a getattr.
*/
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred);
NFSPATHCONF_GETATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_USEGSSNAME;
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (nd->nd_repstat == 0) {
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
cred);
if (!error)
*attrflagp = 1;
} else {
error = nd->nd_repstat;
}
} else {
NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp, NULL);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
error = nfscl_postop_attr(nd, nap, attrflagp);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
if (!error) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
pc->pc_chownrestricted =
fxdr_unsigned(u_int32_t, *tl++);
pc->pc_caseinsensitive =
fxdr_unsigned(u_int32_t, *tl++);
pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
}
}
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs version 3 fsinfo rpc call
*/
int
nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp, NULL);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
error = nfscl_postop_attr(nd, nap, attrflagp);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
if (!error) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
fsp->fs_maxfilesize = fxdr_hyper(tl);
tl += 2;
fxdr_nfsv3time(tl, &fsp->fs_timedelta);
tl += 2;
fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
}
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Renew RPC.
*/
int
nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfsmount *nmp;
int error;
struct nfssockreq *nrp;
struct nfsclsession *tsep;
nmp = clp->nfsc_nmp;
if (nmp == NULL)
return (0);
if (dsp == NULL)
nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0,
0, cred);
else
nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
&dsp->nfsclds_sess, 0, 0, NULL);
if (!NFSHASNFSV4N(nmp)) {
/* NFSv4.1 just uses a Sequence Op and not a Renew. */
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
}
nrp = NULL;
if (dsp != NULL)
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
nd->nd_flag |= ND_USEGSSNAME;
if (dsp == NULL)
error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
else {
error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
if (error == ENXIO)
nfscl_cancelreqs(dsp);
}
if (error)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Releaselockowner RPC.
*/
int
nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
u_int32_t *tl;
int error;
uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
struct nfsclsession *tsep;
if (NFSHASNFSV4N(nmp)) {
/* For NFSv4.1, do a FreeStateID. */
nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
NULL, 0, 0, cred);
nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
} else {
nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
NULL, 0, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
(void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
}
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Compound to get the mount pt FH.
*/
int
nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
u_char *cp, *cp2, *fhp;
int error, cnt, len, setnil;
u_int32_t *opcntp;
nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0,
0, NULL);
cp = dirpath;
cnt = 0;
do {
setnil = 0;
while (*cp == '/')
cp++;
cp2 = cp;
while (*cp2 != '\0' && *cp2 != '/')
cp2++;
if (*cp2 == '/') {
setnil = 1;
*cp2 = '\0';
}
if (cp2 != cp) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_LOOKUP);
nfsm_strtom(nd, cp, strlen(cp));
cnt++;
}
if (setnil)
*cp2++ = '/';
cp = cp2;
} while (*cp != '\0');
if (NFSHASNFSV4N(nmp))
/* Has a Sequence Op done by nfscl_reqstart(). */
*opcntp = txdr_unsigned(3 + cnt);
else
*opcntp = txdr_unsigned(2 + cnt);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETFH);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
tl += (2 + 2 * cnt);
if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
len > NFSX_FHMAX) {
nd->nd_repstat = NFSERR_BADXDR;
} else {
fhp = malloc(len + 1, M_TEMP, M_WAITOK);
nd->nd_repstat = nfsrv_mtostr(nd, fhp, len);
if (nd->nd_repstat == 0) {
NFSLOCKMNT(nmp);
if (nmp->nm_fhsize == 0) {
NFSBCOPY(fhp, nmp->nm_fh, len);
nmp->nm_fhsize = len;
}
NFSUNLOCKMNT(nmp);
}
free(fhp, M_TEMP);
}
}
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Delegreturn RPC.
*/
int
nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
struct nfsmount *nmp, NFSPROC_T *p, int syscred)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
int error;
nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
dp->nfsdl_fhlen, NULL, NULL, 0, 0, cred);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
if (NFSHASNFSV4N(nmp))
*tl++ = 0;
else
*tl++ = dp->nfsdl_stateid.seqid;
*tl++ = dp->nfsdl_stateid.other[0];
*tl++ = dp->nfsdl_stateid.other[1];
*tl = dp->nfsdl_stateid.other[2];
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getacl call.
*/
int
nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, struct acl *aclp)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
NFSCL_REQSTART(nd, NFSPROC_GETACL, vp, cred);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
(void) nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
if (!nd->nd_repstat)
error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
else
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* nfs setacl call.
*/
int
nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, struct acl *aclp)
{
int error;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL);
return (error);
}
/*
* nfs setacl call.
*/
static int
nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct acl *aclp, nfsv4stateid_t *stateidp)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
if (!NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
NFSCL_REQSTART(nd, NFSPROC_SETACL, vp, cred);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
(void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0,
&attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL);
error = nfscl_request(nd, vp, p, cred);
if (error)
return (error);
/* Don't care about the pre/postop attributes */
m_freem(nd->nd_mrep);
return (nd->nd_repstat);
}
/*
* Do the NFSv4.1 Exchange ID.
*/
int
nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
struct nfssockreq *nrp, int minorvers, uint32_t exchflags,
struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl, v41flags;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfsclds *dsp;
struct timespec verstime;
int error, len;
*dspp = NULL;
if (minorvers == 0)
minorvers = nmp->nm_minorvers;
nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL,
NFS_VER4, minorvers, NULL);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */
*tl = txdr_unsigned(clp->nfsc_rev);
(void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(exchflags);
*tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
/* Set the implementation id4 */
*tl = txdr_unsigned(1);
(void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
(void) nfsm_strtom(nd, version, strlen(version));
NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
verstime.tv_sec = 1293840000; /* Jan 1, 2011 */
verstime.tv_nsec = 0;
txdr_nfsv4time(&verstime, tl);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
(int)nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
len = fxdr_unsigned(int, *(tl + 7));
if (len < 0 || len > NFSV4_OPAQUELIMIT) {
error = NFSERR_BADXDR;
goto nfsmout;
}
dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS,
M_WAITOK | M_ZERO);
dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
dsp->nfsclds_servownlen = len;
dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
dsp->nfsclds_sess.nfsess_sequenceid =
fxdr_unsigned(uint32_t, *tl++);
v41flags = fxdr_unsigned(uint32_t, *tl);
if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
NFSHASPNFSOPT(nmp)) {
NFSCL_DEBUG(1, "set PNFS\n");
NFSLOCKMNT(nmp);
nmp->nm_state |= NFSSTA_PNFS;
NFSUNLOCKMNT(nmp);
dsp->nfsclds_flags |= NFSCLDS_MDS;
}
if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
dsp->nfsclds_flags |= NFSCLDS_DS;
if (minorvers == NFSV42_MINORVERSION)
dsp->nfsclds_flags |= NFSCLDS_MINORV2;
if (len > 0)
nd->nd_repstat = nfsrv_mtostr(nd,
dsp->nfsclds_serverown, len);
if (nd->nd_repstat == 0) {
mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
NULL, MTX_DEF);
nfscl_initsessionslots(&dsp->nfsclds_sess);
*dspp = dsp;
} else
free(dsp, M_NFSCLDS);
}
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 Create Session.
*/
int
nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t crflags, maxval, *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
int error, irdcnt, minorvers;
/* Make sure nm_rsize, nm_wsize is set. */
if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0)
nmp->nm_rsize = NFS_MAXBSIZE;
if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0)
nmp->nm_wsize = NFS_MAXBSIZE;
if (dsp == NULL)
minorvers = nmp->nm_minorvers;
else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0)
minorvers = NFSV42_MINORVERSION;
else
minorvers = NFSV41_MINORVERSION;
nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL,
NFS_VER4, minorvers, NULL);
NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
*tl++ = sep->nfsess_clientid.lval[0];
*tl++ = sep->nfsess_clientid.lval[1];
*tl++ = txdr_unsigned(sequenceid);
crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0)
crflags |= NFSV4CRSESS_CONNBACKCHAN;
*tl = txdr_unsigned(crflags);
/* Fill in fore channel attributes. */
NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
*tl++ = 0; /* Header pad size */
if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >=
nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) {
/*
* NFSv4.2 Extended Attribute operations may want to do
* requests/replies that are larger than nm_rsize/nm_wsize.
*/
*tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR);
*tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR);
} else {
*tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);
*tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);
}
*tl++ = txdr_unsigned(4096); /* Max response size cached */
*tl++ = txdr_unsigned(20); /* Max operations */
*tl++ = txdr_unsigned(64); /* Max slots */
*tl = 0; /* No rdma ird */
/* Fill in back channel attributes. */
NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
*tl++ = 0; /* Header pad size */
*tl++ = txdr_unsigned(10000); /* Max request size */
*tl++ = txdr_unsigned(10000); /* Max response size */
*tl++ = txdr_unsigned(4096); /* Max response size cached */
*tl++ = txdr_unsigned(4); /* Max operations */
*tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */
*tl = 0; /* No rdma ird */
NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
/* Allow AUTH_SYS callbacks as uid, gid == 0. */
*tl++ = txdr_unsigned(1); /* Auth_sys only */
*tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */
*tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
*tl++ = 0; /* Null machine name */
*tl++ = 0; /* Uid == 0 */
*tl++ = 0; /* Gid == 0 */
*tl = 0; /* No additional gids */
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
2 * NFSX_UNSIGNED);
bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
crflags = fxdr_unsigned(uint32_t, *tl);
if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
NFSLOCKMNT(nmp);
nmp->nm_state |= NFSSTA_SESSPERSIST;
NFSUNLOCKMNT(nmp);
}
/* Get the fore channel slot count. */
NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
tl++; /* Skip the header pad size. */
/* Make sure nm_wsize is small enough. */
maxval = fxdr_unsigned(uint32_t, *tl++);
while (maxval < nmp->nm_wsize + NFS_MAXXDR) {
if (nmp->nm_wsize > 8096)
nmp->nm_wsize /= 2;
else
break;
}
sep->nfsess_maxreq = maxval;
/* Make sure nm_rsize is small enough. */
maxval = fxdr_unsigned(uint32_t, *tl++);
while (maxval < nmp->nm_rsize + NFS_MAXXDR) {
if (nmp->nm_rsize > 8096)
nmp->nm_rsize /= 2;
else
break;
}
sep->nfsess_maxresp = maxval;
sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
tl++;
sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
irdcnt = fxdr_unsigned(int, *tl);
if (irdcnt < 0 || irdcnt > 1) {
error = NFSERR_BADXDR;
goto nfsmout;
}
if (irdcnt > 0)
NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
/* and the back channel slot count. */
NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
tl += 5;
sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
}
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 Destroy Client.
*/
int
nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
int error;
struct nfsclsession *tsep;
nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0,
0, NULL);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 LayoutGet.
*/
static int
nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
uint64_t offset, uint64_t len, uint64_t minlen, int layouttype,
int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep,
struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0,
0, cred);
nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp,
layouttype, layoutlen, 0);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat == 0)
error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep,
flhp);
if (error == 0 && nd->nd_repstat != 0)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 Get Device Info.
*/
int
nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
NFSPROC_T *p)
{
uint32_t cnt, *tl, vers, minorvers;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct sockaddr_in sin, ssin;
struct sockaddr_in6 sin6, ssin6;
struct nfsclds *dsp = NULL, **dspp, **gotdspp;
struct nfscldevinfo *ndi;
int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j;
int stripecnt;
uint8_t stripeindex;
sa_family_t af, safilled;
ssin.sin_port = 0; /* To shut up compiler. */
ssin.sin_addr.s_addr = 0; /* ditto */
*ndip = NULL;
ndi = NULL;
gotdspp = NULL;
nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0,
0, cred);
NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
*tl++ = txdr_unsigned(layouttype);
*tl++ = txdr_unsigned(100000);
if (notifybitsp != NULL && *notifybitsp != 0) {
*tl = txdr_unsigned(1); /* One word of bits. */
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(*notifybitsp);
} else
*tl = txdr_unsigned(0);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (layouttype != fxdr_unsigned(int, *tl))
printf("EEK! devinfo layout type not same!\n");
if (layouttype == NFSLAYOUT_NFSV4_1_FILES) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
stripecnt = fxdr_unsigned(int, *tl);
NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
if (stripecnt < 1 || stripecnt > 4096) {
printf("pNFS File layout devinfo stripecnt %d:"
" out of range\n", stripecnt);
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) *
NFSX_UNSIGNED);
addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
if (addrcnt < 1 || addrcnt > 128) {
printf("NFS devinfo addrcnt %d: out of range\n",
addrcnt);
error = NFSERR_BADXDR;
goto nfsmout;
}
/*
* Now we know how many stripe indices and addresses, so
* we can allocate the structure the correct size.
*/
i = (stripecnt * sizeof(uint8_t)) /
sizeof(struct nfsclds *) + 1;
NFSCL_DEBUG(4, "stripeindices=%d\n", i);
ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK |
M_ZERO);
NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
NFSX_V4DEVICEID);
ndi->nfsdi_refcnt = 0;
ndi->nfsdi_flags = NFSDI_FILELAYOUT;
ndi->nfsdi_stripecnt = stripecnt;
ndi->nfsdi_addrcnt = addrcnt;
/* Fill in the stripe indices. */
for (i = 0; i < stripecnt; i++) {
stripeindex = fxdr_unsigned(uint8_t, *tl++);
NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
if (stripeindex >= addrcnt) {
printf("pNFS File Layout devinfo"
" stripeindex %d: too big\n",
(int)stripeindex);
error = NFSERR_BADXDR;
goto nfsmout;
}
nfsfldi_setstripeindex(ndi, i, stripeindex);
}
} else if (layouttype == NFSLAYOUT_FLEXFILE) {
/* For Flex File, we only get one address list. */
ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *),
M_NFSDEVINFO, M_WAITOK | M_ZERO);
NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
NFSX_V4DEVICEID);
ndi->nfsdi_refcnt = 0;
ndi->nfsdi_flags = NFSDI_FLEXFILE;
addrcnt = ndi->nfsdi_addrcnt = 1;
}
/* Now, dissect the server address(es). */
safilled = AF_UNSPEC;
for (i = 0; i < addrcnt; i++) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
cnt = fxdr_unsigned(uint32_t, *tl);
if (cnt == 0) {
printf("NFS devinfo 0 len addrlist\n");
error = NFSERR_BADXDR;
goto nfsmout;
}
dspp = nfsfldi_addr(ndi, i);
safilled = AF_UNSPEC;
for (j = 0; j < cnt; j++) {
error = nfsv4_getipaddr(nd, &sin, &sin6, &af,
&isudp);
if (error != 0 && error != EPERM) {
error = NFSERR_BADXDR;
goto nfsmout;
}
if (error == 0 && isudp == 0) {
/*
* The priority is:
* - Same address family.
* Save the address and dspp, so that
* the connection can be done after
* parsing is complete.
*/
if (safilled == AF_UNSPEC ||
(af == nmp->nm_nam->sa_family &&
safilled != nmp->nm_nam->sa_family)
) {
if (af == AF_INET)
ssin = sin;
else
ssin6 = sin6;
safilled = af;
gotdspp = dspp;
}
}
}
}
gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */
gotminor = NFSV41_MINORVERSION;
/* For Flex File, we will take one of the versions to use. */
if (layouttype == NFSLAYOUT_FLEXFILE) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
j = fxdr_unsigned(int, *tl);
if (j < 1 || j > NFSDEV_MAXVERS) {
printf("pNFS: too many versions\n");
error = NFSERR_BADXDR;
goto nfsmout;
}
gotvers = 0;
gotminor = 0;
for (i = 0; i < j; i++) {
NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED);
vers = fxdr_unsigned(uint32_t, *tl++);
minorvers = fxdr_unsigned(uint32_t, *tl++);
if (vers == NFS_VER3)
minorvers = 0;
if ((vers == NFS_VER4 && ((minorvers ==
NFSV41_MINORVERSION && gotminor == 0) ||
minorvers == NFSV42_MINORVERSION)) ||
(vers == NFS_VER3 && gotvers == 0)) {
gotvers = vers;
gotminor = minorvers;
/* We'll take this one. */
ndi->nfsdi_versindex = i;
ndi->nfsdi_vers = vers;
ndi->nfsdi_minorvers = minorvers;
ndi->nfsdi_rsize = fxdr_unsigned(
uint32_t, *tl++);
ndi->nfsdi_wsize = fxdr_unsigned(
uint32_t, *tl++);
if (*tl == newnfs_true)
ndi->nfsdi_flags |=
NFSDI_TIGHTCOUPLED;
else
ndi->nfsdi_flags &=
~NFSDI_TIGHTCOUPLED;
}
}
if (gotvers == 0) {
printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n");
error = NFSERR_BADXDR;
goto nfsmout;
}
}
/* And the notify bits. */
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
bitcnt = fxdr_unsigned(int, *tl);
if (bitcnt > 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
if (notifybitsp != NULL)
*notifybitsp =
fxdr_unsigned(uint32_t, *tl);
}
if (safilled != AF_UNSPEC) {
KASSERT(ndi != NULL, ("ndi is NULL"));
*ndip = ndi;
} else
error = EPERM;
if (error == 0) {
/*
* Now we can do a TCP connection for the correct
* NFS version and IP address.
*/
error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled,
gotvers, gotminor, &dsp, p);
}
if (error == 0) {
KASSERT(gotdspp != NULL, ("gotdspp is NULL"));
*gotdspp = dsp;
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
nfsmout:
if (error != 0 && ndi != NULL)
nfscl_freedevinfo(ndi);
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 LayoutCommit.
*/
int
nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
int layouttype, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL,
0, 0, cred);
NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
NFSX_STATEID);
txdr_hyper(off, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
if (reclaim != 0)
*tl++ = newnfs_true;
else
*tl++ = newnfs_false;
*tl++ = txdr_unsigned(stateidp->seqid);
*tl++ = stateidp->other[0];
*tl++ = stateidp->other[1];
*tl++ = stateidp->other[2];
*tl++ = newnfs_true;
if (lastbyte < off)
lastbyte = off;
else if (lastbyte >= (off + len))
lastbyte = off + len - 1;
txdr_hyper(lastbyte, tl);
tl += 2;
*tl++ = newnfs_false;
*tl++ = txdr_unsigned(layouttype);
/* All supported layouts are 0 length. */
*tl = txdr_unsigned(0);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 LayoutReturn.
*/
int
nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
uint32_t stat, uint32_t op, char *devid)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
uint64_t tu64;
int error;
nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL,
0, 0, cred);
NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
if (reclaim != 0)
*tl++ = newnfs_true;
else
*tl++ = newnfs_false;
*tl++ = txdr_unsigned(layouttype);
*tl++ = txdr_unsigned(iomode);
*tl = txdr_unsigned(layoutreturn);
if (layoutreturn == NFSLAYOUTRETURN_FILE) {
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
NFSX_UNSIGNED);
txdr_hyper(offset, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
*tl++ = txdr_unsigned(stateidp->seqid);
*tl++ = stateidp->other[0];
*tl++ = stateidp->other[1];
*tl++ = stateidp->other[2];
if (layouttype == NFSLAYOUT_NFSV4_1_FILES)
*tl = txdr_unsigned(0);
else if (layouttype == NFSLAYOUT_FLEXFILE) {
if (stat != 0) {
*tl = txdr_unsigned(2 * NFSX_HYPER +
NFSX_STATEID + NFSX_V4DEVICEID + 5 *
NFSX_UNSIGNED);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER +
NFSX_STATEID + NFSX_V4DEVICEID + 5 *
NFSX_UNSIGNED);
*tl++ = txdr_unsigned(1); /* One error. */
tu64 = 0; /* Offset. */
txdr_hyper(tu64, tl); tl += 2;
tu64 = UINT64_MAX; /* Length. */
txdr_hyper(tu64, tl); tl += 2;
NFSBCOPY(stateidp, tl, NFSX_STATEID);
tl += (NFSX_STATEID / NFSX_UNSIGNED);
*tl++ = txdr_unsigned(1); /* One error. */
NFSBCOPY(devid, tl, NFSX_V4DEVICEID);
tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
*tl++ = txdr_unsigned(stat);
*tl++ = txdr_unsigned(op);
} else {
*tl = txdr_unsigned(2 * NFSX_UNSIGNED);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
/* No ioerrs. */
*tl++ = 0;
}
*tl = 0; /* No stats yet. */
}
}
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
if (*tl != 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
stateidp->other[0] = *tl++;
stateidp->other[1] = *tl++;
stateidp->other[2] = *tl;
}
} else
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.2 LayoutError.
*/
static int
nfsrpc_layouterror(struct nfsmount *nmp, uint8_t *fh, int fhlen, uint64_t offset,
uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
uint32_t stat, uint32_t op, char *devid)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfscl_reqstart(nd, NFSPROC_LAYOUTERROR, nmp, fh, fhlen, NULL, NULL,
0, 0, cred);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
txdr_hyper(offset, tl); tl += 2;
txdr_hyper(len, tl); tl += 2;
*tl++ = txdr_unsigned(stateidp->seqid);
*tl++ = stateidp->other[0];
*tl++ = stateidp->other[1];
*tl++ = stateidp->other[2];
*tl++ = txdr_unsigned(1);
NFSBCOPY(devid, tl, NFSX_V4DEVICEID);
tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
*tl++ = txdr_unsigned(stat);
*tl = txdr_unsigned(op);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
if (nd->nd_repstat != 0)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Acquire a layout and devinfo, if possible. The caller must have acquired
* a reference count on the nfsclclient structure before calling this.
* Return the layout in lypp with a reference count on it, if successful.
*/
static int
nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
int iomode, uint32_t rw, uint32_t *notifybitsp, nfsv4stateid_t *stateidp,
uint64_t off, struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
{
struct nfscllayout *lyp;
struct nfsclflayout *flp;
struct nfsclflayouthead flh;
int error = 0, islocked, layoutlen, layouttype, recalled, retonclose;
nfsv4stateid_t stateid;
struct nfsclsession *tsep;
*lypp = NULL;
if (NFSHASFLEXFILE(nmp))
layouttype = NFSLAYOUT_FLEXFILE;
else
layouttype = NFSLAYOUT_NFSV4_1_FILES;
/*
* If lyp is returned non-NULL, there will be a refcnt (shared lock)
* on it, iff flp != NULL or a lock (exclusive lock) on it iff
* flp == NULL.
*/
lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
off, rw, &flp, &recalled);
islocked = 0;
if (lyp == NULL || flp == NULL) {
if (recalled != 0)
return (EIO);
LIST_INIT(&flh);
tsep = nfsmnt_mdssession(nmp);
layoutlen = tsep->nfsess_maxcache -
(NFSX_STATEID + 3 * NFSX_UNSIGNED);
if (lyp == NULL) {
stateid.seqid = 0;
stateid.other[0] = stateidp->other[0];
stateid.other[1] = stateidp->other[1];
stateid.other[2] = stateidp->other[2];
error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX,
(uint64_t)0, layouttype, layoutlen, &stateid,
&retonclose, &flh, cred, p);
} else {
islocked = 1;
stateid.seqid = lyp->nfsly_stateid.seqid;
stateid.other[0] = lyp->nfsly_stateid.other[0];
stateid.other[1] = lyp->nfsly_stateid.other[1];
stateid.other[2] = lyp->nfsly_stateid.other[2];
error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
nfhp->nfh_len, iomode, off, UINT64_MAX,
(uint64_t)0, layouttype, layoutlen, &stateid,
&retonclose, &flh, cred, p);
}
error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh,
nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp,
&flh, layouttype, error, NULL, cred, p);
if (error == 0)
*lypp = lyp;
else if (islocked != 0)
nfscl_rellayout(lyp, 1);
} else
*lypp = lyp;
return (error);
}
/*
* Do a TCP connection plus exchange id and create session.
* If successful, a "struct nfsclds" is linked into the list for the
* mount point and a pointer to it is returned.
*/
static int
nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin,
struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers,
struct nfsclds **dspp, NFSPROC_T *p)
{
struct sockaddr_in *msad, *sad;
struct sockaddr_in6 *msad6, *sad6;
struct nfsclclient *clp;
struct nfssockreq *nrp;
struct nfsclds *dsp, *tdsp;
int error, firsttry;
enum nfsclds_state retv;
uint32_t sequenceid = 0;
KASSERT(nmp->nm_sockreq.nr_cred != NULL,
("nfsrpc_fillsa: NULL nr_cred"));
NFSLOCKCLSTATE();
clp = nmp->nm_clp;
NFSUNLOCKCLSTATE();
if (clp == NULL)
return (EPERM);
if (af == AF_INET) {
NFSLOCKMNT(nmp);
/*
* Check to see if we already have a session for this
* address that is usable for a DS.
* Note that the MDS's address is in a different place
* than the sessions already acquired for DS's.
*/
msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
tdsp = TAILQ_FIRST(&nmp->nm_sess);
while (tdsp != NULL) {
if (msad != NULL && msad->sin_family == AF_INET &&
sin->sin_addr.s_addr == msad->sin_addr.s_addr &&
sin->sin_port == msad->sin_port &&
(tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
tdsp->nfsclds_sess.nfsess_defunct == 0) {
*dspp = tdsp;
NFSUNLOCKMNT(nmp);
NFSCL_DEBUG(4, "fnd same addr\n");
return (0);
}
tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
msad = (struct sockaddr_in *)
tdsp->nfsclds_sockp->nr_nam;
else
msad = NULL;
}
NFSUNLOCKMNT(nmp);
/* No IP address match, so look for new/trunked one. */
sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
sad->sin_len = sizeof(*sad);
sad->sin_family = AF_INET;
sad->sin_port = sin->sin_port;
sad->sin_addr.s_addr = sin->sin_addr.s_addr;
nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
nrp->nr_nam = (struct sockaddr *)sad;
} else if (af == AF_INET6) {
NFSLOCKMNT(nmp);
/*
* Check to see if we already have a session for this
* address that is usable for a DS.
* Note that the MDS's address is in a different place
* than the sessions already acquired for DS's.
*/
msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
tdsp = TAILQ_FIRST(&nmp->nm_sess);
while (tdsp != NULL) {
if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
&msad6->sin6_addr) &&
sin6->sin6_port == msad6->sin6_port &&
(tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
tdsp->nfsclds_sess.nfsess_defunct == 0) {
*dspp = tdsp;
NFSUNLOCKMNT(nmp);
return (0);
}
tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
msad6 = (struct sockaddr_in6 *)
tdsp->nfsclds_sockp->nr_nam;
else
msad6 = NULL;
}
NFSUNLOCKMNT(nmp);
/* No IP address match, so look for new/trunked one. */
sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
sad6->sin6_len = sizeof(*sad6);
sad6->sin6_family = AF_INET6;
sad6->sin6_port = sin6->sin6_port;
NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr,
sizeof(struct in6_addr));
nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
nrp->nr_nam = (struct sockaddr *)sad6;
} else
return (EPERM);
nrp->nr_sotype = SOCK_STREAM;
mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
nrp->nr_prog = NFS_PROG;
nrp->nr_vers = vers;
/*
* Use the credentials that were used for the mount, which are
* in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
* Ref. counting the credentials with crhold() is probably not
* necessary, since nm_sockreq.nr_cred won't be crfree()'d until
* unmount, but I did it anyhow.
*/
nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
error = newnfs_connect(nmp, nrp, NULL, p, 0, false, &nrp->nr_client);
NFSCL_DEBUG(3, "DS connect=%d\n", error);
dsp = NULL;
/* Now, do the exchangeid and create session. */
if (error == 0) {
if (vers == NFS_VER4) {
firsttry = 0;
do {
error = nfsrpc_exchangeid(nmp, clp, nrp,
minorvers, NFSV4EXCH_USEPNFSDS, &dsp,
nrp->nr_cred, p);
NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
if (error == NFSERR_MINORVERMISMATCH)
minorvers = NFSV42_MINORVERSION;
} while (error == NFSERR_MINORVERMISMATCH &&
firsttry++ == 0);
if (error != 0)
newnfs_disconnect(NULL, nrp);
} else {
dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS,
M_WAITOK | M_ZERO);
dsp->nfsclds_flags |= NFSCLDS_DS;
dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */
mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
NULL, MTX_DEF);
}
}
if (error == 0) {
dsp->nfsclds_sockp = nrp;
if (vers == NFS_VER4) {
NFSLOCKMNT(nmp);
retv = nfscl_getsameserver(nmp, dsp, &tdsp,
&sequenceid);
NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
if (retv == NFSDSP_USETHISSESSION &&
nfscl_dssameconn != 0) {
NFSLOCKDS(tdsp);
tdsp->nfsclds_flags |= NFSCLDS_SAMECONN;
NFSUNLOCKDS(tdsp);
NFSUNLOCKMNT(nmp);
/*
* If there is already a session for this
* server, use it.
*/
newnfs_disconnect(NULL, nrp);
nfscl_freenfsclds(dsp);
*dspp = tdsp;
return (0);
}
if (retv == NFSDSP_NOTFOUND)
sequenceid =
dsp->nfsclds_sess.nfsess_sequenceid;
NFSUNLOCKMNT(nmp);
error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
nrp, dsp, sequenceid, 0, nrp->nr_cred, p);
NFSCL_DEBUG(3, "DS createsess=%d\n", error);
}
} else {
NFSFREECRED(nrp->nr_cred);
NFSFREEMUTEX(&nrp->nr_mtx);
free(nrp->nr_nam, M_SONAME);
free(nrp, M_NFSSOCKREQ);
}
if (error == 0) {
NFSCL_DEBUG(3, "add DS session\n");
/*
* Put it at the end of the list. That way the list
* is ordered by when the entry was added. This matters
* since the one done first is the one that should be
* used for sequencid'ing any subsequent create sessions.
*/
NFSLOCKMNT(nmp);
TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
NFSUNLOCKMNT(nmp);
*dspp = dsp;
} else if (dsp != NULL) {
newnfs_disconnect(NULL, nrp);
nfscl_freenfsclds(dsp);
}
return (error);
}
/*
* Do the NFSv4.1 Reclaim Complete.
*/
int
nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
int error;
nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0,
0, cred);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = newnfs_false;
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Initialize the slot tables for a session.
*/
static void
nfscl_initsessionslots(struct nfsclsession *sep)
{
int i;
for (i = 0; i < NFSV4_CBSLOTS; i++) {
if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
m_freem(sep->nfsess_cbslots[i].nfssl_reply);
NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
}
for (i = 0; i < 64; i++)
sep->nfsess_slotseq[i] = 0;
sep->nfsess_slots = 0;
sep->nfsess_badslots = 0;
}
/*
* Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
*/
int
nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p)
{
struct nfsnode *np = VTONFS(vp);
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfscllayout *layp;
struct nfscldevinfo *dip;
struct nfsclflayout *rflp;
struct mbuf *m, *m2;
struct nfsclwritedsdorpc *drpc, *tdrpc;
nfsv4stateid_t stateid;
struct ucred *newcred;
uint64_t lastbyte, len, off, oresid, xfer;
int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo;
void *lckp;
uint8_t *dev;
void *iovbase = NULL;
size_t iovlen = 0;
off_t offs = 0;
ssize_t resid = 0;
uint32_t op;
if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
(np->n_flag & NNOLAYOUT) != 0)
return (EIO);
/* Now, get a reference cnt on the clientid for this mount. */
if (nfscl_getref(nmp) == 0)
return (EIO);
/* Find an appropriate stateid. */
newcred = NFSNEWCRED(cred);
error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
rwaccess, 1, newcred, p, &stateid, &lckp);
if (error != 0) {
NFSFREECRED(newcred);
nfscl_relref(nmp);
return (error);
}
/* Search for a layout for this file. */
off = uiop->uio_offset;
layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, off, rwaccess, &rflp, &recalled);
if (layp == NULL || rflp == NULL) {
if (recalled != 0) {
NFSFREECRED(newcred);
if (lckp != NULL)
nfscl_lockderef(lckp);
nfscl_relref(nmp);
return (EIO);
}
if (layp != NULL) {
nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
layp = NULL;
}
/* Try and get a Layout, if it is supported. */
if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
(np->n_flag & NWRITEOPENED) != 0)
iolaymode = NFSLAYOUTIOMODE_RW;
else
iolaymode = NFSLAYOUTIOMODE_READ;
error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
rwaccess, NULL, &stateid, off, &layp, newcred, p);
if (error != 0) {
NFSLOCKNODE(np);
np->n_flag |= NNOLAYOUT;
NFSUNLOCKNODE(np);
if (lckp != NULL)
nfscl_lockderef(lckp);
NFSFREECRED(newcred);
if (layp != NULL)
nfscl_rellayout(layp, 0);
nfscl_relref(nmp);
return (error);
}
}
/*
* Loop around finding a layout that works for the first part of
* this I/O operation, and then call the function that actually
* does the RPC.
*/
eof = 0;
len = (uint64_t)uiop->uio_resid;
while (len > 0 && error == 0 && eof == 0) {
off = uiop->uio_offset;
error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
if (error == 0) {
oresid = xfer = (uint64_t)uiop->uio_resid;
if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
xfer = rflp->nfsfl_end - rflp->nfsfl_off;
/*
* For Flex File layout with mirrored DSs, select one
* of them at random for reads. For writes and commits,
* do all mirrors.
*/
m = NULL;
tdrpc = drpc = NULL;
firstmirror = 0;
mirrorcnt = 1;
if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 &&
(mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) {
if (rwaccess == NFSV4OPEN_ACCESSREAD) {
firstmirror = arc4random() % mirrorcnt;
mirrorcnt = firstmirror + 1;
} else {
if (docommit == 0) {
/*
* Save values, so uiop can be
* rolled back upon a write
* error.
*/
offs = uiop->uio_offset;
resid = uiop->uio_resid;
iovbase =
uiop->uio_iov->iov_base;
iovlen = uiop->uio_iov->iov_len;
m = nfsm_uiombuflist(uiop, len,
0);
}
tdrpc = drpc = malloc(sizeof(*drpc) *
(mirrorcnt - 1), M_TEMP, M_WAITOK |
M_ZERO);
}
}
for (i = firstmirror; i < mirrorcnt && error == 0; i++){
m2 = NULL;
if (m != NULL && i < mirrorcnt - 1)
m2 = m_copym(m, 0, M_COPYALL, M_WAITOK);
else {
m2 = m;
m = NULL;
}
if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) {
dev = rflp->nfsfl_ffm[i].dev;
dip = nfscl_getdevinfo(nmp->nm_clp, dev,
rflp->nfsfl_ffm[i].devp);
} else {
dev = rflp->nfsfl_dev;
dip = nfscl_getdevinfo(nmp->nm_clp, dev,
rflp->nfsfl_devp);
}
if (dip != NULL) {
if ((rflp->nfsfl_flags & NFSFL_FLEXFILE)
!= 0)
error = nfscl_dofflayoutio(vp,
uiop, iomode, must_commit,
&eof, &stateid, rwaccess,
dip, layp, rflp, off, xfer,
i, docommit, m2, tdrpc,
newcred, p);
else
error = nfscl_doflayoutio(vp,
uiop, iomode, must_commit,
&eof, &stateid, rwaccess,
dip, layp, rflp, off, xfer,
docommit, newcred, p);
nfscl_reldevinfo(dip);
} else {
if (m2 != NULL)
m_freem(m2);
error = EIO;
}
tdrpc++;
}
if (m != NULL)
m_freem(m);
tdrpc = drpc;
timo = hz / 50; /* Wait for 20msec. */
if (timo < 1)
timo = 1;
for (i = firstmirror; i < mirrorcnt - 1 &&
tdrpc != NULL; i++, tdrpc++) {
/*
* For the unused drpc entries, both inprog and
* err == 0, so this loop won't break.
*/
while (tdrpc->inprog != 0 && tdrpc->done == 0)
tsleep(&tdrpc->tsk, PVFS, "clrpcio",
timo);
if (error == 0 && tdrpc->err != 0)
error = tdrpc->err;
if (rwaccess != NFSV4OPEN_ACCESSREAD &&
docommit == 0 && *must_commit == 0 &&
tdrpc->must_commit == 1)
*must_commit = 1;
}
free(drpc, M_TEMP);
if (error == 0) {
if (mirrorcnt > 1 && rwaccess ==
NFSV4OPEN_ACCESSWRITE && docommit == 0) {
NFSLOCKCLSTATE();
layp->nfsly_flags |= NFSLY_WRITTEN;
NFSUNLOCKCLSTATE();
}
lastbyte = off + xfer - 1;
NFSLOCKCLSTATE();
if (lastbyte > layp->nfsly_lastbyte)
layp->nfsly_lastbyte = lastbyte;
NFSUNLOCKCLSTATE();
} else if (error == NFSERR_OPENMODE &&
rwaccess == NFSV4OPEN_ACCESSREAD) {
NFSLOCKMNT(nmp);
nmp->nm_state |= NFSSTA_OPENMODE;
NFSUNLOCKMNT(nmp);
} else if ((error == NFSERR_NOSPC ||
error == NFSERR_IO || error == NFSERR_NXIO) &&
nmp->nm_minorvers == NFSV42_MINORVERSION) {
if (docommit != 0)
op = NFSV4OP_COMMIT;
else if (rwaccess == NFSV4OPEN_ACCESSREAD)
op = NFSV4OP_READ;
else
op = NFSV4OP_WRITE;
nfsrpc_layouterror(nmp, np->n_fhp->nfh_fh,
np->n_fhp->nfh_len, off, xfer,
&layp->nfsly_stateid, newcred, p, error, op,
dip->nfsdi_deviceid);
error = EIO;
} else
error = EIO;
if (error == 0)
len -= (oresid - (uint64_t)uiop->uio_resid);
else if (mirrorcnt > 1 && rwaccess ==
NFSV4OPEN_ACCESSWRITE && docommit == 0) {
/*
* In case the rpc gets retried, roll the
* uio fields changed by nfsm_uiombuflist()
* back.
*/
uiop->uio_offset = offs;
uiop->uio_resid = resid;
uiop->uio_iov->iov_base = iovbase;
uiop->uio_iov->iov_len = iovlen;
}
}
}
if (lckp != NULL)
nfscl_lockderef(lckp);
NFSFREECRED(newcred);
nfscl_rellayout(layp, 0);
nfscl_relref(nmp);
return (error);
}
/*
* Find a file layout that will handle the first bytes of the requested
* range and return the information from it needed to the I/O operation.
*/
int
nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
struct nfsclflayout **retflpp)
{
struct nfsclflayout *flp, *nflp, *rflp;
uint32_t rw;
rflp = NULL;
rw = rwaccess;
/* For reading, do the Read list first and then the Write list. */
do {
if (rw == NFSV4OPEN_ACCESSREAD)
flp = LIST_FIRST(&lyp->nfsly_flayread);
else
flp = LIST_FIRST(&lyp->nfsly_flayrw);
while (flp != NULL) {
nflp = LIST_NEXT(flp, nfsfl_list);
if (flp->nfsfl_off > off)
break;
if (flp->nfsfl_end > off &&
(rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
rflp = flp;
flp = nflp;
}
if (rw == NFSV4OPEN_ACCESSREAD)
rw = NFSV4OPEN_ACCESSWRITE;
else
rw = 0;
} while (rw != 0);
if (rflp != NULL) {
/* This one covers the most bytes starting at off. */
*retflpp = rflp;
return (0);
}
return (EIO);
}
/*
* Do I/O using an NFSv4.1 or NFSv4.2 file layout.
*/
static int
nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p)
{
uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
int commit_thru_mds, error, stripe_index, stripe_pos, minorvers;
struct nfsnode *np;
struct nfsfh *fhp;
struct nfsclds **dspp;
np = VTONFS(vp);
rel_off = off - flp->nfsfl_patoff;
stripe_unit_size = flp->nfsfl_util & NFSFLAYUTIL_STRIPE_MASK;
stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
dp->nfsdi_stripecnt;
transfer = stripe_unit_size - (rel_off % stripe_unit_size);
error = 0;
/* Loop around, doing I/O for each stripe unit. */
while (len > 0 && error == 0) {
stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
dspp = nfsfldi_addr(dp, stripe_index);
if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0)
minorvers = NFSV42_MINORVERSION;
else
minorvers = NFSV41_MINORVERSION;
if (len > transfer && docommit == 0)
xfer = transfer;
else
xfer = len;
if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
/* Dense layout. */
if (stripe_pos >= flp->nfsfl_fhcnt)
return (EIO);
fhp = flp->nfsfl_fh[stripe_pos];
io_off = (rel_off / (stripe_unit_size *
dp->nfsdi_stripecnt)) * stripe_unit_size +
rel_off % stripe_unit_size;
} else {
/* Sparse layout. */
if (flp->nfsfl_fhcnt > 1) {
if (stripe_index >= flp->nfsfl_fhcnt)
return (EIO);
fhp = flp->nfsfl_fh[stripe_index];
} else if (flp->nfsfl_fhcnt == 1)
fhp = flp->nfsfl_fh[0];
else
fhp = np->n_fhp;
io_off = off;
}
if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) {
commit_thru_mds = 1;
if (docommit != 0)
error = EIO;
} else {
commit_thru_mds = 0;
NFSLOCKNODE(np);
np->n_flag |= NDSCOMMIT;
NFSUNLOCKNODE(np);
}
if (docommit != 0) {
if (error == 0)
error = nfsrpc_commitds(vp, io_off, xfer,
*dspp, fhp, NFS_VER4, minorvers, cred, p);
if (error == 0) {
/*
* Set both eof and uio_resid = 0 to end any
* loops.
*/
*eofp = 1;
uiop->uio_resid = 0;
} else {
NFSLOCKNODE(np);
np->n_flag &= ~NDSCOMMIT;
NFSUNLOCKNODE(np);
}
} else if (rwflag == NFSV4OPEN_ACCESSREAD)
error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p);
else {
error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
0, NFS_VER4, minorvers, cred, p);
if (error == 0) {
NFSLOCKCLSTATE();
lyp->nfsly_flags |= NFSLY_WRITTEN;
NFSUNLOCKCLSTATE();
}
}
if (error == 0) {
transfer = stripe_unit_size;
stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
len -= xfer;
off += xfer;
}
}
return (error);
}
/*
* Do I/O using an NFSv4.1 flex file layout.
*/
static int
nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
uint64_t len, int mirror, int docommit, struct mbuf *mp,
struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
{
uint64_t xfer;
int error;
struct nfsnode *np;
struct nfsfh *fhp;
struct nfsclds **dspp;
struct ucred *tcred;
struct mbuf *m, *m2;
uint32_t copylen;
np = VTONFS(vp);
error = 0;
NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off,
(uintmax_t)len);
/* Loop around, doing I/O for each stripe unit. */
while (len > 0 && error == 0) {
dspp = nfsfldi_addr(dp, 0);
fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex];
stateidp = &flp->nfsfl_ffm[mirror].st;
NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n",
mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid);
if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) {
tcred = NFSNEWCRED(cred);
tcred->cr_uid = flp->nfsfl_ffm[mirror].user;
tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group;
tcred->cr_ngroups = 1;
} else
tcred = cred;
if (rwflag == NFSV4OPEN_ACCESSREAD)
copylen = dp->nfsdi_rsize;
else {
copylen = dp->nfsdi_wsize;
if (len > copylen && mp != NULL) {
/*
* When a mirrored configuration needs to do
* multiple writes to each mirror, all writes
* except the last one must be a multiple of
* 4 bytes. This is required so that the XDR
* does not need padding.
* If possible, clip the size to an exact
* multiple of the mbuf length, so that the
* split will be on an mbuf boundary.
*/
copylen &= 0xfffffffc;
if (copylen > mp->m_len)
copylen = copylen / mp->m_len *
mp->m_len;
}
}
NFSLOCKNODE(np);
np->n_flag |= NDSCOMMIT;
NFSUNLOCKNODE(np);
if (len > copylen && docommit == 0)
xfer = copylen;
else
xfer = len;
if (docommit != 0) {
if (error == 0) {
/*
* Do last mirrored DS commit with this thread.
*/
if (mirror < flp->nfsfl_mirrorcnt - 1)
error = nfsio_commitds(vp, off, xfer,
*dspp, fhp, dp->nfsdi_vers,
dp->nfsdi_minorvers, drpc, tcred,
p);
else
error = nfsrpc_commitds(vp, off, xfer,
*dspp, fhp, dp->nfsdi_vers,
dp->nfsdi_minorvers, tcred, p);
NFSCL_DEBUG(4, "commitds=%d\n", error);
if (error != 0 && error != EACCES && error !=
ESTALE) {
NFSCL_DEBUG(4,
"DS layreterr for commit\n");
nfscl_dserr(NFSV4OP_COMMIT, error, dp,
lyp, *dspp);
}
}
NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error);
if (error == 0) {
/*
* Set both eof and uio_resid = 0 to end any
* loops.
*/
*eofp = 1;
uiop->uio_resid = 0;
} else {
NFSLOCKNODE(np);
np->n_flag &= ~NDSCOMMIT;
NFSUNLOCKNODE(np);
}
} else if (rwflag == NFSV4OPEN_ACCESSREAD) {
error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
off, xfer, fhp, 1, dp->nfsdi_vers,
dp->nfsdi_minorvers, tcred, p);
NFSCL_DEBUG(4, "readds=%d\n", error);
if (error != 0 && error != EACCES && error != ESTALE) {
NFSCL_DEBUG(4, "DS layreterr for read\n");
nfscl_dserr(NFSV4OP_READ, error, dp, lyp,
*dspp);
}
} else {
if (flp->nfsfl_mirrorcnt == 1) {
error = nfsrpc_writeds(vp, uiop, iomode,
must_commit, stateidp, *dspp, off, xfer,
fhp, 0, 1, dp->nfsdi_vers,
dp->nfsdi_minorvers, tcred, p);
if (error == 0) {
NFSLOCKCLSTATE();
lyp->nfsly_flags |= NFSLY_WRITTEN;
NFSUNLOCKCLSTATE();
}
} else {
m = mp;
if (xfer < len) {
/* The mbuf list must be split. */
m2 = nfsm_split(mp, xfer);
if (m2 != NULL)
mp = m2;
else {
m_freem(mp);
error = EIO;
}
}
NFSCL_DEBUG(4, "mcopy len=%jd xfer=%jd\n",
(uintmax_t)len, (uintmax_t)xfer);
/*
* Do last write to a mirrored DS with this
* thread.
*/
if (error == 0) {
if (mirror < flp->nfsfl_mirrorcnt - 1)
error = nfsio_writedsmir(vp,
iomode, must_commit,
stateidp, *dspp, off,
xfer, fhp, m,
dp->nfsdi_vers,
dp->nfsdi_minorvers, drpc,
tcred, p);
else
error = nfsrpc_writedsmir(vp,
iomode, must_commit,
stateidp, *dspp, off,
xfer, fhp, m,
dp->nfsdi_vers,
dp->nfsdi_minorvers, tcred,
p);
}
NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error);
if (error != 0 && error != EACCES && error !=
ESTALE) {
NFSCL_DEBUG(4,
"DS layreterr for write\n");
nfscl_dserr(NFSV4OP_WRITE, error, dp,
lyp, *dspp);
}
}
}
NFSCL_DEBUG(4, "aft read/writeds=%d\n", error);
if (error == 0) {
len -= xfer;
off += xfer;
}
if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0)
NFSFREECRED(tcred);
}
NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error);
return (error);
}
/*
* The actual read RPC done to a DS.
*/
static int
nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex,
int vers, int minorvers, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int attrflag, error, retlen;
struct nfsrv_descript nfsd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsrv_descript *nd = &nfsd;
struct nfssockreq *nrp;
struct nfsvattr na;
nd->nd_mrep = NULL;
if (vers == 0 || vers == NFS_VER4) {
nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
vers = NFS_VER4;
NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers);
if (flex != 0)
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
else
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
} else {
nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READ]);
NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READDS]);
NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n");
}
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
txdr_hyper(io_off, tl);
*(tl + 2) = txdr_unsigned(len);
nrp = dsp->nfsclds_sockp;
NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp);
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat,
error);
if (error != 0)
return (error);
if (vers == NFS_VER3) {
error = nfscl_postop_attr(nd, &na, &attrflag);
NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error);
if (error != 0)
goto nfsmout;
}
if (nd->nd_repstat != 0) {
error = nd->nd_repstat;
goto nfsmout;
}
if (vers == NFS_VER3) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*eofp = fxdr_unsigned(int, *(tl + 1));
} else {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
*eofp = fxdr_unsigned(int, *tl);
}
NFSM_STRSIZ(retlen, len);
NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp);
error = nfsm_mbufuio(nd, uiop, retlen);
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
return (error);
}
/*
* The actual write RPC done to a DS.
*/
static int
nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC;
int32_t backup;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfssockreq *nrp;
struct nfsvattr na;
KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
nd->nd_mrep = NULL;
if (vers == 0 || vers == NFS_VER4) {
nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers);
vers = NFS_VER4;
if (flex != 0)
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
else
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
} else {
nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]);
NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]);
NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n");
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
}
txdr_hyper(io_off, tl);
tl += 2;
if (vers == NFS_VER3)
*tl++ = txdr_unsigned(len);
*tl++ = txdr_unsigned(*iomode);
*tl = txdr_unsigned(len);
nfsm_uiombuf(nd, uiop, len);
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error,
nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat != 0) {
/*
* In case the rpc gets retried, roll
* the uio fields changed by nfsm_uiombuf()
* back.
*/
uiop->uio_offset -= len;
uiop->uio_resid += len;
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len;
uiop->uio_iov->iov_len += len;
error = nd->nd_repstat;
} else {
if (vers == NFS_VER3) {
error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
NULL);
NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error);
if (error != 0)
goto nfsmout;
}
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
rlen = fxdr_unsigned(int, *tl++);
NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen);
if (rlen == 0) {
error = NFSERR_IO;
goto nfsmout;
} else if (rlen < len) {
backup = len - rlen;
uiop->uio_iov->iov_base =
(char *)uiop->uio_iov->iov_base - backup;
uiop->uio_iov->iov_len += backup;
uiop->uio_offset -= backup;
uiop->uio_resid += backup;
len = rlen;
}
commit = fxdr_unsigned(int, *tl++);
/*
* Return the lowest commitment level
* obtained by any of the RPCs.
*/
if (committed == NFSWRITE_FILESYNC)
committed = commit;
else if (committed == NFSWRITE_DATASYNC &&
commit == NFSWRITE_UNSTABLE)
committed = commit;
if (commit_thru_mds != 0) {
NFSLOCKMNT(nmp);
if (!NFSHASWRITEVERF(nmp)) {
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
NFSSETWRITEVERF(nmp);
} else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF) &&
*must_commit != 2) {
*must_commit = 1;
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
}
NFSUNLOCKMNT(nmp);
} else {
NFSLOCKDS(dsp);
if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
} else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) &&
*must_commit != 2) {
*must_commit = 1;
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
}
NFSUNLOCKDS(dsp);
}
}
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
*iomode = committed;
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
return (error);
}
/*
* The actual write RPC done to a DS.
* This variant is called from a separate kernel process for mirrors.
* Any short write is considered an IO error.
*/
static int
nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit,
nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfssockreq *nrp;
struct nfsvattr na;
nd->nd_mrep = NULL;
if (vers == 0 || vers == NFS_VER4) {
nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
vers = NFS_VER4;
NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n",
minorvers);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
} else {
nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]);
NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]);
NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n");
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
}
txdr_hyper(io_off, tl);
tl += 2;
if (vers == NFS_VER3)
*tl++ = txdr_unsigned(len);
*tl++ = txdr_unsigned(*iomode);
*tl = txdr_unsigned(len);
if (len > 0) {
/* Put data in mbuf chain. */
nd->nd_mb->m_next = m;
}
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error,
nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat != 0)
error = nd->nd_repstat;
else {
if (vers == NFS_VER3) {
error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
NULL);
NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n",
error);
if (error != 0)
goto nfsmout;
}
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
rlen = fxdr_unsigned(int, *tl++);
NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len,
rlen);
if (rlen != len) {
error = NFSERR_IO;
NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n",
len, rlen);
goto nfsmout;
}
commit = fxdr_unsigned(int, *tl++);
/*
* Return the lowest commitment level
* obtained by any of the RPCs.
*/
if (committed == NFSWRITE_FILESYNC)
committed = commit;
else if (committed == NFSWRITE_DATASYNC &&
commit == NFSWRITE_UNSTABLE)
committed = commit;
NFSLOCKDS(dsp);
if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
} else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) &&
*must_commit != 2) {
*must_commit = 1;
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
}
NFSUNLOCKDS(dsp);
}
nfsmout:
if (nd->nd_mrep != NULL)
m_freem(nd->nd_mrep);
*iomode = committed;
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
return (error);
}
/*
* Start up the thread that will execute nfsrpc_writedsmir().
*/
static void
start_writedsmir(void *arg, int pending)
{
struct nfsclwritedsdorpc *drpc;
drpc = (struct nfsclwritedsdorpc *)arg;
drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode,
&drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len,
drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred,
drpc->p);
drpc->done = 1;
crfree(drpc->cred);
NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err);
}
/*
* Set up the write DS mirror call for the pNFS I/O thread.
*/
static int
nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit,
nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len,
struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
{
int error, ret;
error = 0;
drpc->done = 0;
drpc->vp = vp;
drpc->iomode = *iomode;
drpc->must_commit = *must_commit;
drpc->stateidp = stateidp;
drpc->dsp = dsp;
drpc->off = off;
drpc->len = len;
drpc->fhp = fhp;
drpc->m = m;
drpc->vers = vers;
drpc->minorvers = minorvers;
drpc->cred = crhold(cred);
drpc->p = p;
drpc->inprog = 0;
ret = EIO;
if (nfs_pnfsiothreads != 0) {
ret = nfs_pnfsio(start_writedsmir, drpc);
NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret);
}
if (ret != 0) {
error = nfsrpc_writedsmir(vp, iomode, &drpc->must_commit,
stateidp, dsp, off, len, fhp, m, vers, minorvers, cred, p);
crfree(drpc->cred);
}
NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error);
return (error);
}
/*
* Free up the nfsclds structure.
*/
void
nfscl_freenfsclds(struct nfsclds *dsp)
{
int i;
if (dsp == NULL)
return;
if (dsp->nfsclds_sockp != NULL) {
NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
}
NFSFREEMUTEX(&dsp->nfsclds_mtx);
NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
for (i = 0; i < NFSV4_CBSLOTS; i++) {
if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
m_freem(
dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
}
free(dsp, M_NFSCLDS);
}
static enum nfsclds_state
nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
struct nfsclds **retdspp, uint32_t *sequencep)
{
struct nfsclds *dsp;
int fndseq;
/*
* Search the list of nfsclds structures for one with the same
* server.
*/
fndseq = 0;
TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
dsp->nfsclds_servownlen != 0 &&
!NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
dsp->nfsclds_servownlen) &&
dsp->nfsclds_sess.nfsess_defunct == 0) {
NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
TAILQ_FIRST(&nmp->nm_sess), dsp,
dsp->nfsclds_flags);
if (fndseq == 0) {
/* Get sequenceid# from first entry. */
*sequencep =
dsp->nfsclds_sess.nfsess_sequenceid;
fndseq = 1;
}
/* Server major id matches. */
if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
*retdspp = dsp;
return (NFSDSP_USETHISSESSION);
}
}
}
if (fndseq != 0)
return (NFSDSP_SEQTHISSESSION);
return (NFSDSP_NOTFOUND);
}
/*
* NFS commit rpc to a NFSv4.1 DS.
*/
static int
nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred,
NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfssockreq *nrp;
struct nfsvattr na;
int attrflag, error;
nd->nd_mrep = NULL;
if (vers == 0 || vers == NFS_VER4) {
nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
vers = NFS_VER4;
} else {
nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers,
NULL);
NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMIT]);
NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMITDS]);
}
NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers,
minorvers);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
txdr_hyper(offset, tl);
tl += 2;
*tl = txdr_unsigned(cnt);
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error,
nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
if (vers == NFS_VER3) {
error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
NULL);
NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error);
if (error != 0)
goto nfsmout;
}
NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
NFSLOCKDS(dsp);
if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
error = NFSERR_STALEWRITEVERF;
}
NFSUNLOCKDS(dsp);
}
nfsmout:
if (error == 0 && nd->nd_repstat != 0)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Start up the thread that will execute nfsrpc_commitds().
*/
static void
start_commitds(void *arg, int pending)
{
struct nfsclwritedsdorpc *drpc;
drpc = (struct nfsclwritedsdorpc *)arg;
drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len,
drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred,
drpc->p);
drpc->done = 1;
crfree(drpc->cred);
NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err);
}
/*
* Set up the commit DS mirror call for the pNFS I/O thread.
*/
static int
nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
struct nfsfh *fhp, int vers, int minorvers,
struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
{
int error, ret;
error = 0;
drpc->done = 0;
drpc->vp = vp;
drpc->off = offset;
drpc->len = cnt;
drpc->dsp = dsp;
drpc->fhp = fhp;
drpc->vers = vers;
drpc->minorvers = minorvers;
drpc->cred = crhold(cred);
drpc->p = p;
drpc->inprog = 0;
ret = EIO;
if (nfs_pnfsiothreads != 0) {
ret = nfs_pnfsio(start_commitds, drpc);
NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret);
}
if (ret != 0) {
error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers,
minorvers, cred, p);
crfree(drpc->cred);
}
NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error);
return (error);
}
/*
* NFS Advise rpc
*/
int
nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise,
struct ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t hints;
int error;
NFSZERO_ATTRBIT(&hints);
if (advise == POSIX_FADV_WILLNEED)
NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED);
else if (advise == POSIX_FADV_DONTNEED)
NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED);
else
return (0);
NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp, cred);
nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER);
txdr_hyper(offset, tl);
tl += 2;
txdr_hyper(cnt, tl);
nfsrv_putattrbit(nd, &hints);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
if (nd->nd_repstat != 0)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
#ifdef notyet
/*
* NFS advise rpc to a NFSv4.2 DS.
*/
static int
nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise,
struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfssockreq *nrp;
nfsattrbit_t hints;
int error;
/* For NFS DSs prior to NFSv4.2, just return OK. */
if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION)
return (0);
NFSZERO_ATTRBIT(&hints);
if (advise == POSIX_FADV_WILLNEED)
NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED);
else if (advise == POSIX_FADV_DONTNEED)
NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED);
else
return (0);
nd->nd_mrep = NULL;
nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh,
fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, NULL);
vers = NFS_VER4;
NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers,
minorvers);
nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
txdr_hyper(offset, tl);
tl += 2;
*tl = txdr_unsigned(cnt);
nfsrv_putattrbit(nd, &hints);
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error,
nd->nd_repstat);
if (error != 0)
return (error);
if (nd->nd_repstat != 0)
error = nd->nd_repstat;
m_freem(nd->nd_mrep);
return (error);
}
/*
* Start up the thread that will execute nfsrpc_commitds().
*/
static void
start_adviseds(void *arg, int pending)
{
struct nfsclwritedsdorpc *drpc;
drpc = (struct nfsclwritedsdorpc *)arg;
drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len,
drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers,
drpc->cred, drpc->p);
drpc->done = 1;
crfree(drpc->cred);
NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err);
}
/*
* Set up the advise DS mirror call for the pNFS I/O thread.
*/
static int
nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise,
struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers,
struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
{
int error, ret;
error = 0;
drpc->done = 0;
drpc->vp = vp;
drpc->off = offset;
drpc->len = cnt;
drpc->advise = advise;
drpc->dsp = dsp;
drpc->fhp = fhp;
drpc->vers = vers;
drpc->minorvers = minorvers;
drpc->cred = crhold(cred);
drpc->p = p;
drpc->inprog = 0;
ret = EIO;
if (nfs_pnfsiothreads != 0) {
ret = nfs_pnfsio(start_adviseds, drpc);
NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret);
}
if (ret != 0) {
error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers,
minorvers, cred, p);
crfree(drpc->cred);
}
NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error);
return (error);
}
#endif /* notyet */
/*
* Do the Allocate operation, retrying for recovery.
*/
int
nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap,
int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
int error, expireret = 0, retrycnt, nostateid;
uint32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsfh *nfhp = NULL;
nfsv4stateid_t stateid;
off_t tmp_off;
void *lckp;
if (len < 0)
return (EINVAL);
if (len == 0)
return (0);
tmp_off = off + len;
NFSLOCKMNT(nmp);
if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) {
NFSUNLOCKMNT(nmp);
return (EFBIG);
}
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
NFSUNLOCKMNT(nmp);
nfhp = VTONFS(vp)->n_fhp;
retrycnt = 0;
do {
lckp = NULL;
nostateid = 0;
nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp);
if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
stateid.other[2] == 0) {
nostateid = 1;
NFSCL_DEBUG(1, "stateid0 in allocate\n");
}
/*
* Not finding a stateid should probably never happen,
* but just return an error for this case.
*/
if (nostateid != 0)
error = EIO;
else
error = nfsrpc_allocaterpc(vp, off, len, &stateid,
nap, attrflagp, cred, p);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_allocate");
} else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
error == NFSERR_STALEDONTRECOVER ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error != 0 && retrycnt >= 4)
error = EIO;
return (error);
}
/*
* The allocate RPC.
*/
static int
nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp,
struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp, cred);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED);
txdr_hyper(off, tl); tl += 2;
txdr_hyper(len, tl); tl += 2;
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = NFS_LATTR_NOSHRINK;
} else
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Set up the XDR arguments for the LayoutGet operation.
*/
static void
nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset,
uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype,
int layoutlen, int usecurstateid)
{
uint32_t *tl;
NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
NFSX_STATEID);
*tl++ = newnfs_false; /* Don't signal availability. */
*tl++ = txdr_unsigned(layouttype);
*tl++ = txdr_unsigned(iomode);
txdr_hyper(offset, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
txdr_hyper(minlen, tl);
tl += 2;
if (usecurstateid != 0) {
/* Special stateid for Current stateid. */
*tl++ = txdr_unsigned(1);
*tl++ = 0;
*tl++ = 0;
*tl++ = 0;
} else {
*tl++ = txdr_unsigned(stateidp->seqid);
NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
*tl++ = stateidp->other[0];
*tl++ = stateidp->other[1];
*tl++ = stateidp->other[2];
}
*tl = txdr_unsigned(layoutlen);
}
/*
* Parse the reply for a successful LayoutGet operation.
*/
static int
nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd,
nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp)
{
uint32_t *tl;
struct nfsclflayout *flp, *prevflp, *tflp;
int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen;
int m, mirrorcnt;
uint64_t retlen, off;
struct nfsfh *nfhp;
uint8_t *cp;
uid_t user;
gid_t grp;
NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n");
error = 0;
flp = NULL;
gotiomode = -1;
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
if (*tl++ != 0)
*retonclosep = 1;
else
*retonclosep = 0;
stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
(int)stateidp->seqid);
stateidp->other[0] = *tl++;
stateidp->other[1] = *tl++;
stateidp->other[2] = *tl++;
cnt = fxdr_unsigned(int, *tl);
NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
if (cnt <= 0 || cnt > 10000) {
/* Don't accept more than 10000 layouts in reply. */
error = NFSERR_BADXDR;
goto nfsmout;
}
for (i = 0; i < cnt; i++) {
/* Dissect to the layout type. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER +
3 * NFSX_UNSIGNED);
off = fxdr_hyper(tl); tl += 2;
retlen = fxdr_hyper(tl); tl += 2;
iomode = fxdr_unsigned(int, *tl++);
laytype = fxdr_unsigned(int, *tl);
NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype,
(uintmax_t)off, (uintmax_t)retlen, iomode);
/* Ignore length of layout body for now. */
if (laytype == NFSLAYOUT_NFSV4_1_FILES) {
/* Parse the File layout up to fhcnt. */
NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED +
NFSX_HYPER + NFSX_V4DEVICEID);
fhcnt = fxdr_unsigned(int, *(tl + 4 +
NFSX_V4DEVICEID / NFSX_UNSIGNED));
NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
if (fhcnt < 0 || fhcnt > 100) {
/* Don't accept more than 100 file handles. */
error = NFSERR_BADXDR;
goto nfsmout;
}
if (fhcnt > 0)
flp = malloc(sizeof(*flp) + fhcnt *
sizeof(struct nfsfh *), M_NFSFLAYOUT,
M_WAITOK);
else
flp = malloc(sizeof(*flp), M_NFSFLAYOUT,
M_WAITOK);
flp->nfsfl_flags = NFSFL_FILE;
flp->nfsfl_fhcnt = 0;
flp->nfsfl_devp = NULL;
flp->nfsfl_off = off;
if (flp->nfsfl_off + retlen < flp->nfsfl_off)
flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
else
flp->nfsfl_end = flp->nfsfl_off + retlen;
flp->nfsfl_iomode = iomode;
if (gotiomode == -1)
gotiomode = flp->nfsfl_iomode;
/* Ignore layout body length for now. */
NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
mtx_lock(&nmp->nm_mtx);
if (nmp->nm_minorvers > 1 && (flp->nfsfl_util &
NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0)
nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS;
mtx_unlock(&nmp->nm_mtx);
flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n",
flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff);
for (j = 0; j < fhcnt; j++) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
nfhlen = fxdr_unsigned(int, *tl);
if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
error = NFSERR_BADXDR;
goto nfsmout;
}
nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
M_NFSFH, M_WAITOK);
flp->nfsfl_fh[j] = nfhp;
flp->nfsfl_fhcnt++;
nfhp->nfh_len = nfhlen;
NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
}
} else if (laytype == NFSLAYOUT_FLEXFILE) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED +
NFSX_HYPER);
mirrorcnt = fxdr_unsigned(int, *(tl + 2));
NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt);
if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) {
error = NFSERR_BADXDR;
goto nfsmout;
}
flp = malloc(sizeof(*flp) + mirrorcnt *
sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK);
flp->nfsfl_flags = NFSFL_FLEXFILE;
flp->nfsfl_mirrorcnt = mirrorcnt;
for (j = 0; j < mirrorcnt; j++)
flp->nfsfl_ffm[j].devp = NULL;
flp->nfsfl_off = off;
if (flp->nfsfl_off + retlen < flp->nfsfl_off)
flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
else
flp->nfsfl_end = flp->nfsfl_off + retlen;
flp->nfsfl_iomode = iomode;
if (gotiomode == -1)
gotiomode = flp->nfsfl_iomode;
flp->nfsfl_stripeunit = fxdr_hyper(tl);
NFSCL_DEBUG(4, "stripeunit=%ju\n",
(uintmax_t)flp->nfsfl_stripeunit);
for (j = 0; j < mirrorcnt; j++) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
k = fxdr_unsigned(int, *tl);
if (k < 1 || k > 128) {
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSCL_DEBUG(4, "servercnt=%d\n", k);
for (l = 0; l < k; l++) {
NFSM_DISSECT(tl, uint32_t *,
NFSX_V4DEVICEID + NFSX_STATEID +
2 * NFSX_UNSIGNED);
if (l == 0) {
/* Just use the first server. */
NFSBCOPY(tl,
flp->nfsfl_ffm[j].dev,
NFSX_V4DEVICEID);
tl += (NFSX_V4DEVICEID /
NFSX_UNSIGNED);
tl++;
flp->nfsfl_ffm[j].st.seqid =
*tl++;
flp->nfsfl_ffm[j].st.other[0] =
*tl++;
flp->nfsfl_ffm[j].st.other[1] =
*tl++;
flp->nfsfl_ffm[j].st.other[2] =
*tl++;
NFSCL_DEBUG(4, "st.seqid=%u "
"st.o0=0x%x st.o1=0x%x "
"st.o2=0x%x\n",
flp->nfsfl_ffm[j].st.seqid,
flp->nfsfl_ffm[j].st.other[0],
flp->nfsfl_ffm[j].st.other[1],
flp->nfsfl_ffm[j].st.other[2]);
} else
tl += ((NFSX_V4DEVICEID +
NFSX_STATEID +
NFSX_UNSIGNED) /
NFSX_UNSIGNED);
fhcnt = fxdr_unsigned(int, *tl);
NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
if (fhcnt < 1 ||
fhcnt > NFSDEV_MAXVERS) {
error = NFSERR_BADXDR;
goto nfsmout;
}
for (m = 0; m < fhcnt; m++) {
NFSM_DISSECT(tl, uint32_t *,
NFSX_UNSIGNED);
nfhlen = fxdr_unsigned(int,
*tl);
NFSCL_DEBUG(4, "nfhlen=%d\n",
nfhlen);
if (nfhlen <= 0 || nfhlen >
NFSX_V4FHMAX) {
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSM_DISSECT(cp, uint8_t *,
NFSM_RNDUP(nfhlen));
if (l == 0) {
flp->nfsfl_ffm[j].fhcnt
= fhcnt;
nfhp = malloc(
sizeof(*nfhp) +
nfhlen - 1, M_NFSFH,
M_WAITOK);
flp->nfsfl_ffm[j].fh[m]
= nfhp;
nfhp->nfh_len = nfhlen;
NFSBCOPY(cp,
nfhp->nfh_fh,
nfhlen);
NFSCL_DEBUG(4,
"got fh\n");
}
}
/* Now, get the ffsd_user/ffds_group. */
error = nfsrv_parseug(nd, 0, &user,
&grp, curthread);
NFSCL_DEBUG(4, "after parseu=%d\n",
error);
if (error == 0)
error = nfsrv_parseug(nd, 1,
&user, &grp, curthread);
NFSCL_DEBUG(4, "aft parseg=%d\n",
grp);
if (error != 0)
goto nfsmout;
NFSCL_DEBUG(4, "user=%d group=%d\n",
user, grp);
if (l == 0) {
flp->nfsfl_ffm[j].user = user;
flp->nfsfl_ffm[j].group = grp;
NFSCL_DEBUG(4,
"usr=%d grp=%d\n", user,
grp);
}
}
}
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++);
#ifdef notnow
/*
* At this time, there is no flag.
* NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be
* added, or it may never exist?
*/
mtx_lock(&nmp->nm_mtx);
if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags &
NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0)
nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS;
mtx_unlock(&nmp->nm_mtx);
#endif
flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl);
NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n",
flp->nfsfl_fflags, flp->nfsfl_statshint);
} else {
error = NFSERR_BADXDR;
goto nfsmout;
}
if (flp->nfsfl_iomode == gotiomode) {
/* Keep the list in increasing offset order. */
tflp = LIST_FIRST(flhp);
prevflp = NULL;
while (tflp != NULL &&
tflp->nfsfl_off < flp->nfsfl_off) {
prevflp = tflp;
tflp = LIST_NEXT(tflp, nfsfl_list);
}
if (prevflp == NULL)
LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
else
LIST_INSERT_AFTER(prevflp, flp,
nfsfl_list);
NFSCL_DEBUG(4, "flp inserted\n");
} else {
printf("nfscl_layoutget(): got wrong iomode\n");
nfscl_freeflayout(flp);
}
flp = NULL;
}
nfsmout:
NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error);
if (error != 0 && flp != NULL)
nfscl_freeflayout(flp);
return (error);
}
/*
* Parse a user/group digit string.
*/
static int
nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp,
NFSPROC_T *p)
{
uint32_t *tl;
char *cp, *str, str0[NFSV4_SMALLSTR + 1];
uint32_t len = 0;
int error = 0;
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
len = fxdr_unsigned(uint32_t, *tl);
str = NULL;
if (len > NFSV4_OPAQUELIMIT) {
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len);
if (len == 0) {
if (dogrp != 0)
*gidp = GID_NOGROUP;
else
*uidp = UID_NOBODY;
return (0);
}
if (len > NFSV4_SMALLSTR)
str = malloc(len + 1, M_TEMP, M_WAITOK);
else
str = str0;
NFSM_DISSECT(cp, char *, NFSM_RNDUP(len));
NFSBCOPY(cp, str, len);
str[len] = '\0';
NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str);
if (dogrp != 0)
error = nfsv4_strtogid(nd, str, len, gidp);
else
error = nfsv4_strtouid(nd, str, len, uidp);
nfsmout:
if (len > NFSV4_SMALLSTR)
free(str, M_TEMP);
NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error);
return (error);
}
/*
* Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(),
* so that it does both an Open and a Layoutget.
*/
static int
nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
struct ucred *cred, NFSPROC_T *p)
{
struct nfscllayout *lyp;
struct nfsclflayout *flp;
struct nfsclflayouthead flh;
int error, islocked, layoutlen, recalled, retonclose, usecurstateid;
int layouttype, laystat;
nfsv4stateid_t stateid;
struct nfsclsession *tsep;
error = 0;
if (NFSHASFLEXFILE(nmp))
layouttype = NFSLAYOUT_FLEXFILE;
else
layouttype = NFSLAYOUT_NFSV4_1_FILES;
/*
* If lyp is returned non-NULL, there will be a refcnt (shared lock)
* on it, iff flp != NULL or a lock (exclusive lock) on it iff
* flp == NULL.
*/
lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, mode, &flp,
&recalled);
NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp);
if (lyp == NULL)
islocked = 0;
else if (flp != NULL)
islocked = 1;
else
islocked = 2;
if ((lyp == NULL || flp == NULL) && recalled == 0) {
LIST_INIT(&flh);
tsep = nfsmnt_mdssession(nmp);
layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID +
3 * NFSX_UNSIGNED);
if (lyp == NULL)
usecurstateid = 1;
else {
usecurstateid = 0;
stateid.seqid = lyp->nfsly_stateid.seqid;
stateid.other[0] = lyp->nfsly_stateid.other[0];
stateid.other[1] = lyp->nfsly_stateid.other[1];
stateid.other[2] = lyp->nfsly_stateid.other[2];
}
error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen,
newfhp, newfhlen, mode, op, name, namelen,
dpp, &stateid, usecurstateid, layouttype, layoutlen,
&retonclose, &flh, &laystat, cred, p);
NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n",
laystat, error);
laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen,
&stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat,
&islocked, cred, p);
} else
error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen,
mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0);
if (islocked == 2)
nfscl_rellayout(lyp, 1);
else if (islocked == 1)
nfscl_rellayout(lyp, 0);
return (error);
}
/*
* This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS
* enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are
* handled by nfsrpc_openrpc().
* For the case where op == NULL, dvp is the directory. When op != NULL, it
* can be NULL.
*/
static int
nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
nfsv4stateid_t *stateidp, int usecurstateid, int layouttype,
int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp,
int *laystatp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfscldeleg *ndp = NULL;
struct nfsvattr nfsva;
struct nfsclsession *tsep;
uint32_t rflags, deleg;
nfsattrbit_t attrbits;
int error, ret, acesize, limitby, iomode;
*dpp = NULL;
*laystatp = ENXIO;
nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL,
0, 0, cred);
NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
*tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
*tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
nfsm_strtom(nd, name, namelen);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
if ((mode & NFSV4OPEN_ACCESSWRITE) != 0)
iomode = NFSLAYOUTIOMODE_RW;
else
iomode = NFSLAYOUTIOMODE_READ;
nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp,
layouttype, layoutlen, usecurstateid);
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
if (error != 0)
return (error);
NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
if (nd->nd_repstat != 0)
*laystatp = nd->nd_repstat;
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
/* ND_NOMOREDATA will be set if the Open operation failed. */
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
6 * NFSX_UNSIGNED);
op->nfso_stateid.seqid = *tl++;
op->nfso_stateid.other[0] = *tl++;
op->nfso_stateid.other[1] = *tl++;
op->nfso_stateid.other[2] = *tl;
rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error != 0)
goto nfsmout;
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
deleg = fxdr_unsigned(u_int32_t, *tl);
if (deleg == NFSV4OPEN_DELEGATEREAD ||
deleg == NFSV4OPEN_DELEGATEWRITE) {
if (!(op->nfso_own->nfsow_clp->nfsc_flags &
NFSCLFLAGS_FIRSTDELEG))
op->nfso_own->nfsow_clp->nfsc_flags |=
(NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
ndp = malloc(sizeof(struct nfscldeleg) + newfhlen,
M_NFSCLDELEG, M_WAITOK);
LIST_INIT(&ndp->nfsdl_owner);
LIST_INIT(&ndp->nfsdl_lock);
ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
ndp->nfsdl_fhlen = newfhlen;
NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
newnfs_copyincred(cred, &ndp->nfsdl_cred);
nfscl_lockinit(&ndp->nfsdl_rwlock);
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
NFSX_UNSIGNED);
ndp->nfsdl_stateid.seqid = *tl++;
ndp->nfsdl_stateid.other[0] = *tl++;
ndp->nfsdl_stateid.other[1] = *tl++;
ndp->nfsdl_stateid.other[2] = *tl++;
ret = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEWRITE) {
ndp->nfsdl_flags = NFSCLDL_WRITE;
/*
* Indicates how much the file can grow.
*/
NFSM_DISSECT(tl, u_int32_t *,
3 * NFSX_UNSIGNED);
limitby = fxdr_unsigned(int, *tl++);
switch (limitby) {
case NFSV4OPEN_LIMITSIZE:
ndp->nfsdl_sizelimit = fxdr_hyper(tl);
break;
case NFSV4OPEN_LIMITBLOCKS:
ndp->nfsdl_sizelimit =
fxdr_unsigned(u_int64_t, *tl++);
ndp->nfsdl_sizelimit *=
fxdr_unsigned(u_int64_t, *tl);
break;
default:
error = NFSERR_BADXDR;
goto nfsmout;
};
} else
ndp->nfsdl_flags = NFSCLDL_READ;
if (ret != 0)
ndp->nfsdl_flags |= NFSCLDL_RECALL;
error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, false,
&ret, &acesize, p);
if (error != 0)
goto nfsmout;
} else if (deleg != NFSV4OPEN_DELEGATENONE) {
error = NFSERR_BADXDR;
goto nfsmout;
}
if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 ||
nfscl_assumeposixlocks)
op->nfso_posixlock = 1;
else
op->nfso_posixlock = 0;
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
/* If the 2nd element == NFS_OK, the Getattr succeeded. */
if (*++tl == 0) {
error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
NULL, NULL, NULL, p, cred);
if (error != 0)
goto nfsmout;
if (ndp != NULL) {
ndp->nfsdl_change = nfsva.na_filerev;
ndp->nfsdl_modtime = nfsva.na_mtime;
ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
*dpp = ndp;
ndp = NULL;
}
/*
* At this point, the Open has succeeded, so set
* nd_repstat = NFS_OK. If the Layoutget failed,
* this function just won't return a layout.
*/
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*laystatp = fxdr_unsigned(int, *++tl);
if (*laystatp == 0) {
error = nfsrv_parselayoutget(nmp, nd,
stateidp, retonclosep, flhp);
if (error != 0)
*laystatp = error;
}
} else
nd->nd_repstat = 0; /* Return 0 for Open. */
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
nfsmout:
free(ndp, M_NFSCLDELEG);
m_freem(nd->nd_mrep);
return (error);
}
/*
* Similar nfsrpc_createv4(), but also does the LayoutGet operation.
* Used only for mounts with pNFS enabled.
*/
static int
nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp, int *unlockedp, nfsv4stateid_t *stateidp,
int usecurstateid, int layouttype, int layoutlen, int *retonclosep,
struct nfsclflayouthead *flhp, int *laystatp)
{
uint32_t *tl;
int error = 0, deleg, newone, ret, acesize, limitby;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsclopen *op;
struct nfscldeleg *dp = NULL;
struct nfsnode *np;
struct nfsfh *nfhp;
struct nfsclsession *tsep;
nfsattrbit_t attrbits;
nfsv4stateid_t stateid;
struct nfsmount *nmp;
nmp = VFSTONFS(dvp->v_mount);
np = VTONFS(dvp);
*laystatp = ENXIO;
*unlockedp = 0;
*nfhpp = NULL;
*dpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp, cred);
/*
* For V4, this is actually an Open op.
*/
NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(owp->nfsow_seqid);
*tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
NFSV4OPEN_ACCESSREAD);
*tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
tsep = nfsmnt_mdssession(nmp);
*tl++ = tsep->nfsess_clientid.lval[0];
*tl = tsep->nfsess_clientid.lval[1];
nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
if ((fmode & O_EXCL) != 0) {
if (NFSHASSESSPERSIST(nmp)) {
/* Use GUARDED for persistent sessions. */
*tl = txdr_unsigned(NFSCREATE_GUARDED);
nfscl_fillsattr(nd, vap, dvp, 0, 0);
} else {
/* Otherwise, use EXCLUSIVE4_1. */
*tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
*tl++ = cverf.lval[0];
*tl = cverf.lval[1];
nfscl_fillsattr(nd, vap, dvp, 0, 0);
}
} else {
*tl = txdr_unsigned(NFSCREATE_UNCHECKED);
nfscl_fillsattr(nd, vap, dvp, 0, 0);
}
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
nfsm_strtom(nd, name, namelen);
/* Get the new file's handle and attributes, plus save the FH. */
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_SAVEFH);
*tl++ = txdr_unsigned(NFSV4OP_GETFH);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
/* Get the directory's post-op attributes. */
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
(void)nfsm_fhtom(nmp, nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NFSV4OP_RESTOREFH);
*tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp,
layouttype, layoutlen, usecurstateid);
error = nfscl_request(nd, dvp, p, cred);
if (error != 0)
return (error);
NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat,
error);
if (nd->nd_repstat != 0)
*laystatp = nd->nd_repstat;
NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n");
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
6 * NFSX_UNSIGNED);
stateid.seqid = *tl++;
stateid.other[0] = *tl++;
stateid.other[1] = *tl++;
stateid.other[2] = *tl;
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
if (error != 0)
goto nfsmout;
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
deleg = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEREAD ||
deleg == NFSV4OPEN_DELEGATEWRITE) {
if (!(owp->nfsow_clp->nfsc_flags &
NFSCLFLAGS_FIRSTDELEG))
owp->nfsow_clp->nfsc_flags |=
(NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX,
M_NFSCLDELEG, M_WAITOK);
LIST_INIT(&dp->nfsdl_owner);
LIST_INIT(&dp->nfsdl_lock);
dp->nfsdl_clp = owp->nfsow_clp;
newnfs_copyincred(cred, &dp->nfsdl_cred);
nfscl_lockinit(&dp->nfsdl_rwlock);
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
NFSX_UNSIGNED);
dp->nfsdl_stateid.seqid = *tl++;
dp->nfsdl_stateid.other[0] = *tl++;
dp->nfsdl_stateid.other[1] = *tl++;
dp->nfsdl_stateid.other[2] = *tl++;
ret = fxdr_unsigned(int, *tl);
if (deleg == NFSV4OPEN_DELEGATEWRITE) {
dp->nfsdl_flags = NFSCLDL_WRITE;
/*
* Indicates how much the file can grow.
*/
NFSM_DISSECT(tl, u_int32_t *,
3 * NFSX_UNSIGNED);
limitby = fxdr_unsigned(int, *tl++);
switch (limitby) {
case NFSV4OPEN_LIMITSIZE:
dp->nfsdl_sizelimit = fxdr_hyper(tl);
break;
case NFSV4OPEN_LIMITBLOCKS:
dp->nfsdl_sizelimit =
fxdr_unsigned(u_int64_t, *tl++);
dp->nfsdl_sizelimit *=
fxdr_unsigned(u_int64_t, *tl);
break;
default:
error = NFSERR_BADXDR;
goto nfsmout;
};
} else {
dp->nfsdl_flags = NFSCLDL_READ;
}
if (ret != 0)
dp->nfsdl_flags |= NFSCLDL_RECALL;
error = nfsrv_dissectace(nd, &dp->nfsdl_ace, false,
&ret, &acesize, p);
if (error != 0)
goto nfsmout;
} else if (deleg != NFSV4OPEN_DELEGATENONE) {
error = NFSERR_BADXDR;
goto nfsmout;
}
/* Now, we should have the status for the SaveFH. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl == 0) {
NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n");
/*
* Now, process the GetFH and Getattr for the newly
* created file. nfscl_mtofh() will set
* ND_NOMOREDATA if these weren't successful.
*/
error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error);
if (error != 0)
goto nfsmout;
} else
nd->nd_flag |= ND_NOMOREDATA;
/* Now we have the PutFH and Getattr for the directory. */
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl != 0)
nd->nd_flag |= ND_NOMOREDATA;
else {
NFSM_DISSECT(tl, uint32_t *, 2 *
NFSX_UNSIGNED);
if (*++tl != 0)
nd->nd_flag |= ND_NOMOREDATA;
}
}
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error);
if (error != 0)
goto nfsmout;
*dattrflagp = 1;
if (dp != NULL && *attrflagp != 0) {
dp->nfsdl_change = nnap->na_filerev;
dp->nfsdl_modtime = nnap->na_mtime;
dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
}
/*
* We can now complete the Open state.
*/
nfhp = *nfhpp;
if (dp != NULL) {
dp->nfsdl_fhlen = nfhp->nfh_len;
NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh,
nfhp->nfh_len);
}
/*
* Get an Open structure that will be
* attached to the OpenOwner, acquired already.
*/
error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
(NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
cred, p, NULL, &op, &newone, NULL, 0, false);
if (error != 0)
goto nfsmout;
op->nfso_stateid = stateid;
newnfs_copyincred(cred, &op->nfso_cred);
nfscl_openrelease(nmp, op, error, newone);
*unlockedp = 1;
/* Now, handle the RestoreFH and LayoutGet. */
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED);
*laystatp = fxdr_unsigned(int, *(tl + 3));
if (*laystatp == 0) {
error = nfsrv_parselayoutget(nmp, nd,
stateidp, retonclosep, flhp);
if (error != 0)
*laystatp = error;
}
NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n",
error);
} else
nd->nd_repstat = 0;
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(owp->nfsow_clp);
nfsmout:
NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error);
if (error == 0)
*dpp = dp;
else
free(dp, M_NFSCLDELEG);
m_freem(nd->nd_mrep);
return (error);
}
/*
* Similar to nfsrpc_getopenlayout(), except that it used for the Create case.
*/
static int
nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp, int *unlockedp)
{
struct nfscllayout *lyp;
struct nfsclflayouthead flh;
struct nfsfh *nfhp;
struct nfsclsession *tsep;
struct nfsmount *nmp;
nfsv4stateid_t stateid;
int error, layoutlen, layouttype, retonclose, laystat;
error = 0;
nmp = VFSTONFS(dvp->v_mount);
if (NFSHASFLEXFILE(nmp))
layouttype = NFSLAYOUT_FLEXFILE;
else
layouttype = NFSLAYOUT_NFSV4_1_FILES;
LIST_INIT(&flh);
tsep = nfsmnt_mdssession(nmp);
layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED);
error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode,
owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose,
&flh, &laystat);
NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n",
laystat, error);
lyp = NULL;
if (laystat == 0) {
nfhp = *nfhpp;
laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh,
nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh,
layouttype, laystat, NULL, cred, p);
} else
laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid,
retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL,
cred, p);
if (laystat == 0)
nfscl_rellayout(lyp, 0);
return (error);
}
/*
* Process the results of a layoutget() operation.
*/
static int
nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp,
int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit,
struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype,
int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p)
{
struct nfsclflayout *tflp;
struct nfscldevinfo *dip;
uint8_t *dev;
int i, mirrorcnt;
if (laystat == NFSERR_UNKNLAYOUTTYPE) {
NFSLOCKMNT(nmp);
if (!NFSHASFLEXFILE(nmp)) {
/* Switch to using Flex File Layout. */
nmp->nm_state |= NFSSTA_FLEXFILE;
} else if (layouttype == NFSLAYOUT_FLEXFILE) {
/* Disable pNFS. */
NFSCL_DEBUG(1, "disable PNFS\n");
nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE);
}
NFSUNLOCKMNT(nmp);
}
if (laystat == 0) {
NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n");
LIST_FOREACH(tflp, flhp, nfsfl_list) {
if (layouttype == NFSLAYOUT_FLEXFILE)
mirrorcnt = tflp->nfsfl_mirrorcnt;
else
mirrorcnt = 1;
for (i = 0; i < mirrorcnt; i++) {
laystat = nfscl_adddevinfo(nmp, NULL, i, tflp);
NFSCL_DEBUG(4, "aft adddev=%d\n", laystat);
if (laystat != 0) {
if (layouttype == NFSLAYOUT_FLEXFILE)
dev = tflp->nfsfl_ffm[i].dev;
else
dev = tflp->nfsfl_dev;
laystat = nfsrpc_getdeviceinfo(nmp, dev,
layouttype, notifybit, &dip, cred,
p);
NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n",
laystat);
if (laystat != 0)
goto out;
laystat = nfscl_adddevinfo(nmp, dip, i,
tflp);
if (laystat != 0)
printf("nfsrpc_layoutgetresout"
": cannot add\n");
}
}
}
}
out:
if (laystat == 0) {
/*
* nfscl_layout() always returns with the nfsly_lock
* set to a refcnt (shared lock).
* Passing in dvp is sufficient, since it is only used to
* get the fsid for the file system.
*/
laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp,
layouttype, retonclose, flhp, lypp, cred, p);
NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n",
laystat);
if (laystat == 0 && islockedp != NULL)
*islockedp = 1;
}
return (laystat);
}
/*
* nfs copy_file_range operation.
*/
int
nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp,
off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp,
struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap,
struct ucred *cred, bool consecutive, bool *must_commitp)
{
int commit, error, expireret = 0, retrycnt;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(invp->v_mount);
struct nfsfh *innfhp = NULL, *outnfhp = NULL;
nfsv4stateid_t instateid, outstateid;
void *inlckp, *outlckp;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
innfhp = VTONFS(invp)->n_fhp;
outnfhp = VTONFS(outvp)->n_fhp;
retrycnt = 0;
do {
/* Get both stateids. */
inlckp = NULL;
nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len,
NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid,
&inlckp);
outlckp = NULL;
nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len,
NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid,
&outlckp);
error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp,
&instateid, &outstateid, innap, inattrflagp, outnap,
outattrflagp, consecutive, &commit, cred, curthread);
if (error == 0) {
if (commit != NFSWRITE_FILESYNC)
*must_commitp = true;
*inoffp += *lenp;
*outoffp += *lenp;
} else if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (inlckp != NULL)
nfscl_lockderef(inlckp);
if (outlckp != NULL)
nfscl_lockderef(outlckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_cfr");
} else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev,
curthread);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
error == NFSERR_STALEDONTRECOVER ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error != 0 && (retrycnt >= 4 ||
error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
error == NFSERR_STALEDONTRECOVER))
error = EIO;
return (error);
}
/*
* The copy RPC.
*/
static int
nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff,
size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp,
struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap,
int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred,
NFSPROC_T *p)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfsmount *nmp;
nfsattrbit_t attrbits;
uint64_t len;
nmp = VFSTONFS(outvp->v_mount);
*inattrflagp = *outattrflagp = 0;
*commitp = NFSWRITE_UNSTABLE;
len = *lenp;
*lenp = 0;
if (len > nfs_maxcopyrange)
len = nfs_maxcopyrange;
NFSCL_REQSTART(nd, NFSPROC_COPY, invp, cred);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
(void)nfsm_fhtom(nmp, nd, VTONFS(outvp)->n_fhp->nfh_fh,
VTONFS(outvp)->n_fhp->nfh_len, 0);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_COPY);
nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID);
nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED);
txdr_hyper(inoff, tl); tl += 2;
txdr_hyper(outoff, tl); tl += 2;
txdr_hyper(len, tl); tl += 2;
if (consecutive)
*tl++ = newnfs_true;
else
*tl++ = newnfs_false;
*tl++ = newnfs_true;
*tl++ = 0;
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSWRITEGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, invp, p, cred);
if (error != 0)
return (error);
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
/* Get the input file's attributes. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*(tl + 1) == 0) {
error = nfsm_loadattr(nd, innap);
if (error != 0)
goto nfsmout;
*inattrflagp = 1;
} else
nd->nd_flag |= ND_NOMOREDATA;
}
/* Skip over return stat for PutFH. */
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (*++tl != 0)
nd->nd_flag |= ND_NOMOREDATA;
}
/* Skip over return stat for Copy. */
if ((nd->nd_flag & ND_NOMOREDATA) == 0)
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
if (*tl != 0) {
/* There should be no callback ids. */
error = NFSERR_BADXDR;
goto nfsmout;
}
NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED +
NFSX_VERF);
len = fxdr_hyper(tl); tl += 2;
*commitp = fxdr_unsigned(int, *tl++);
NFSLOCKMNT(nmp);
if (!NFSHASWRITEVERF(nmp)) {
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
NFSSETWRITEVERF(nmp);
} else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
nd->nd_repstat = NFSERR_STALEWRITEVERF;
}
NFSUNLOCKMNT(nmp);
tl += (NFSX_VERF / NFSX_UNSIGNED);
if (nd->nd_repstat == 0 && *++tl != newnfs_true)
/* Must be a synchronous copy. */
nd->nd_repstat = NFSERR_NOTSUPP;
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
error = nfsm_loadattr(nd, outnap);
if (error == 0)
*outattrflagp = NFS_LATTR_NOSHRINK;
if (nd->nd_repstat == 0)
*lenp = len;
} else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) {
/*
* For the case where consecutive is not supported, but
* synchronous is supported, we can try consecutive == false
* by returning this error. Otherwise, return NFSERR_NOTSUPP,
* since Copy cannot be done.
*/
if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
if (!consecutive || *++tl == newnfs_false)
nd->nd_repstat = NFSERR_NOTSUPP;
} else
nd->nd_repstat = NFSERR_BADXDR;
}
if (error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Seek operation.
*/
int
nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content,
struct ucred *cred, struct nfsvattr *nap, int *attrflagp)
{
int error, expireret = 0, retrycnt;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
struct nfsnode *np = VTONFS(vp);
struct nfsfh *nfhp = NULL;
nfsv4stateid_t stateid;
void *lckp;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
nfhp = np->n_fhp;
retrycnt = 0;
do {
lckp = NULL;
nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp);
error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content,
nap, attrflagp, cred);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
(void) nfs_catnap(PZERO, error, "nfs_seek");
} else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) &&
error == NFSERR_BADSTATEID)) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev,
curthread);
} else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) {
error = EIO;
}
retrycnt++;
} while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_BADSESSION ||
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4) ||
(error == NFSERR_OPENMODE && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
return (error);
}
/*
* The seek RPC.
*/
static int
nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp,
int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_SEEK, vp, cred);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
txdr_hyper(*offp, tl); tl += 2;
*tl++ = txdr_unsigned(content);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, curthread, cred);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER);
if (*tl++ == newnfs_true)
*eofp = true;
else
*eofp = false;
*offp = fxdr_hyper(tl);
/* Just skip over Getattr op status. */
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = 1;
}
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* The getextattr RPC.
*/
int
nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp,
struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
uint32_t len, len2;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp, cred);
nfsm_strtom(nd, name, strlen(name));
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
len = fxdr_unsigned(uint32_t, *tl);
/* Sanity check lengths. */
if (uiop != NULL && len > 0 && len <= IOSIZE_MAX &&
uiop->uio_resid <= UINT32_MAX) {
len2 = uiop->uio_resid;
if (len2 >= len)
error = nfsm_mbufuio(nd, uiop, len);
else {
error = nfsm_mbufuio(nd, uiop, len2);
if (error == 0) {
/*
* nfsm_mbufuio() advances to a multiple
* of 4, so round up len2 as well. Then
* we need to advance over the rest of
* the data, rounding up the remaining
* length.
*/
len2 = NFSM_RNDUP(len2);
len2 = NFSM_RNDUP(len - len2);
if (len2 > 0)
error = nfsm_advance(nd, len2,
-1);
}
}
} else if (uiop == NULL && len > 0) {
/* Just wants the length and not the data. */
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
} else if (len > 0)
error = ENOATTR;
if (error != 0)
goto nfsmout;
*lenp = len;
/* Just skip over Getattr op status. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = 1;
}
if (error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* The setextattr RPC.
*/
int
nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop,
struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp, cred);
if (uiop->uio_resid > nd->nd_maxreq) {
/* nd_maxreq is set by NFSCL_REQSTART(). */
m_freem(nd->nd_mreq);
return (EINVAL);
}
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4SXATTR_EITHER);
nfsm_strtom(nd, name, strlen(name));
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(uiop->uio_resid);
nfsm_uiombuf(nd, uiop, uiop->uio_resid);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
/* Just skip over the reply and Getattr op status. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 *
NFSX_UNSIGNED);
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = 1;
}
if (error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* The removeextattr RPC.
*/
int
nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap,
int *attrflagp, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int error;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp, cred);
nfsm_strtom(nd, name, strlen(name));
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
if (nd->nd_repstat == 0) {
/* Just skip over the reply and Getattr op status. */
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 *
NFSX_UNSIGNED);
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = 1;
}
if (error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* The listextattr RPC.
*/
int
nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop,
size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int cnt, error, i, len;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
u_char c;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp, cred);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
txdr_hyper(*cookiep, tl); tl += 2;
*tl++ = txdr_unsigned(*lenp);
*tl = txdr_unsigned(NFSV4OP_GETATTR);
NFSGETATTR_ATTRBIT(&attrbits);
nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred);
if (error != 0)
return (error);
*eofp = true;
*lenp = 0;
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
*cookiep = fxdr_hyper(tl); tl += 2;
cnt = fxdr_unsigned(int, *tl);
if (cnt < 0) {
error = EBADRPC;
goto nfsmout;
}
for (i = 0; i < cnt; i++) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
len = fxdr_unsigned(int, *tl);
if (len <= 0 || len > EXTATTR_MAXNAMELEN) {
error = EBADRPC;
goto nfsmout;
}
if (uiop == NULL)
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
else if (uiop->uio_resid >= len + 1) {
c = len;
error = uiomove(&c, sizeof(c), uiop);
if (error == 0)
error = nfsm_mbufuio(nd, uiop, len);
} else {
error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
*eofp = false;
}
if (error != 0)
goto nfsmout;
*lenp += (len + 1);
}
/* Get the eof and skip over the Getattr op status. */
NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED);
/*
* *eofp is set false above, because it wasn't able to copy
* all of the reply.
*/
if (*eofp && *tl == 0)
*eofp = false;
error = nfsm_loadattr(nd, nap);
if (error == 0)
*attrflagp = 1;
}
if (error == 0)
error = nd->nd_repstat;
nfsmout:
m_freem(nd->nd_mrep);
return (error);
}
/*
* Split an mbuf list. For non-M_EXTPG mbufs, just use m_split().
*/
static struct mbuf *
nfsm_split(struct mbuf *mp, uint64_t xfer)
{
struct mbuf *m, *m2;
vm_page_t pg;
int i, j, left, pgno, plen, trim;
char *cp, *cp2;
if ((mp->m_flags & M_EXTPG) == 0) {
m = m_split(mp, xfer, M_WAITOK);
return (m);
}
/* Find the correct mbuf to split at. */
for (m = mp; m != NULL && xfer > m->m_len; m = m->m_next)
xfer -= m->m_len;
if (m == NULL)
return (NULL);
/* If xfer == m->m_len, we can just split the mbuf list. */
if (xfer == m->m_len) {
m2 = m->m_next;
m->m_next = NULL;
return (m2);
}
/* Find the page to split at. */
pgno = 0;
left = xfer;
do {
if (pgno == 0)
plen = m_epg_pagelen(m, 0, m->m_epg_1st_off);
else
plen = m_epg_pagelen(m, pgno, 0);
if (left <= plen)
break;
left -= plen;
pgno++;
} while (pgno < m->m_epg_npgs);
if (pgno == m->m_epg_npgs)
panic("nfsm_split: eroneous ext_pgs mbuf");
m2 = mb_alloc_ext_pgs(M_WAITOK, mb_free_mext_pgs);
m2->m_epg_flags |= EPG_FLAG_ANON;
/*
* If left < plen, allocate a new page for the new mbuf
* and copy the data after left in the page to this new
* page.
*/
if (left < plen) {
pg = vm_page_alloc_noobj(VM_ALLOC_WAITOK | VM_ALLOC_NODUMP |
VM_ALLOC_WIRED);
m2->m_epg_pa[0] = VM_PAGE_TO_PHYS(pg);
m2->m_epg_npgs = 1;
/* Copy the data after left to the new page. */
trim = plen - left;
cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]);
if (pgno == 0)
cp += m->m_epg_1st_off;
cp += left;
cp2 = (char *)(void *)PHYS_TO_DMAP(m2->m_epg_pa[0]);
if (pgno == m->m_epg_npgs - 1)
m2->m_epg_last_len = trim;
else {
cp2 += PAGE_SIZE - trim;
m2->m_epg_1st_off = PAGE_SIZE - trim;
m2->m_epg_last_len = m->m_epg_last_len;
}
memcpy(cp2, cp, trim);
m2->m_len = trim;
} else {
m2->m_len = 0;
m2->m_epg_last_len = m->m_epg_last_len;
}
/* Move the pages beyond pgno to the new mbuf. */
for (i = pgno + 1, j = m2->m_epg_npgs; i < m->m_epg_npgs; i++, j++) {
m2->m_epg_pa[j] = m->m_epg_pa[i];
/* Never moves page 0. */
m2->m_len += m_epg_pagelen(m, i, 0);
}
m2->m_epg_npgs = j;
m->m_epg_npgs = pgno + 1;
m->m_epg_last_len = left;
m->m_len = xfer;
m2->m_next = m->m_next;
m->m_next = NULL;
return (m2);
}
/*
* Do the NFSv4.1 Bind Connection to Session.
* Called from the reconnect layer of the krpc (sys/rpc/clnt_rc.c).
*/
void
nfsrpc_bindconnsess(CLIENT *cl, void *arg, struct ucred *cr)
{
struct nfscl_reconarg *rcp = (struct nfscl_reconarg *)arg;
uint32_t res, *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct rpc_callextra ext;
struct timeval utimeout;
enum clnt_stat stat;
int error;
nfscl_reqstart(nd, NFSPROC_BINDCONNTOSESS, NULL, NULL, 0, NULL, NULL,
NFS_VER4, rcp->minorvers, NULL);
NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID + 2 * NFSX_UNSIGNED);
memcpy(tl, rcp->sessionid, NFSX_V4SESSIONID);
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
*tl++ = txdr_unsigned(NFSCDFC4_FORE_OR_BOTH);
*tl = newnfs_false;
memset(&ext, 0, sizeof(ext));
utimeout.tv_sec = 30;
utimeout.tv_usec = 0;
ext.rc_auth = authunix_create(cr);
nd->nd_mrep = NULL;
stat = CLNT_CALL_MBUF(cl, &ext, NFSV4PROC_COMPOUND, nd->nd_mreq,
&nd->nd_mrep, utimeout);
AUTH_DESTROY(ext.rc_auth);
if (stat != RPC_SUCCESS) {
printf("nfsrpc_bindconnsess: call failed stat=%d\n", stat);
return;
}
if (nd->nd_mrep == NULL) {
printf("nfsrpc_bindconnsess: no reply args\n");
return;
}
error = 0;
newnfs_realign(&nd->nd_mrep, M_WAITOK);
nd->nd_md = nd->nd_mrep;
nd->nd_dpos = mtod(nd->nd_md, char *);
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
nd->nd_repstat = fxdr_unsigned(uint32_t, *tl++);
if (nd->nd_repstat == NFSERR_OK) {
res = fxdr_unsigned(uint32_t, *tl);
if (res > 0 && (error = nfsm_advance(nd, NFSM_RNDUP(res),
-1)) != 0)
goto nfsmout;
NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4 * NFSX_UNSIGNED);
tl += 3;
if (!NFSBCMP(tl, rcp->sessionid, NFSX_V4SESSIONID)) {
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
res = fxdr_unsigned(uint32_t, *tl);
if (res != NFSCDFS4_BOTH)
printf("nfsrpc_bindconnsess: did not "
"return FS4_BOTH\n");
} else
printf("nfsrpc_bindconnsess: not same "
"sessionid\n");
} else if (nd->nd_repstat != NFSERR_BADSESSION)
printf("nfsrpc_bindconnsess: returned %d\n", nd->nd_repstat);
nfsmout:
if (error != 0)
printf("nfsrpc_bindconnsess: reply bad xdr\n");
m_freem(nd->nd_mrep);
}
/*
* Do roughly what nfs_statfs() does for NFSv4, but when called with a shared
* locked vnode.
*/
static void
nfscl_statfs(struct vnode *vp, struct ucred *cred, NFSPROC_T *td)
{
struct nfsvattr nfsva;
struct nfsfsinfo fs;
struct nfsstatfs sb;
struct mount *mp;
struct nfsmount *nmp;
uint32_t lease;
int attrflag, error;
mp = vp->v_mount;
nmp = VFSTONFS(mp);
error = nfsrpc_statfs(vp, &sb, &fs, &lease, cred, td, &nfsva,
&attrflag);
if (attrflag != 0)
(void) nfscl_loadattrcache(&vp, &nfsva, NULL, 0, 1);
if (error == 0) {
NFSLOCKCLSTATE();
if (nmp->nm_clp != NULL)
nmp->nm_clp->nfsc_renew = NFSCL_RENEW(lease);
NFSUNLOCKCLSTATE();
mtx_lock(&nmp->nm_mtx);
nfscl_loadfsinfo(nmp, &fs);
nfscl_loadsbinfo(nmp, &sb, &mp->mnt_stat);
mp->mnt_stat.f_iosize = newnfs_iosize(nmp);
mtx_unlock(&nmp->nm_mtx);
}
}
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