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97c35a724e
freebsd-skq/sys/fs/nfsclient/nfs_clrpcops.c
rmacklem 97c35a724e Alex Burlyga reported a POLA violation for the new NFS client as 
compared to the old NFS client via email to the freebsd-fs@ mailing list.
For the new client, when multiple clients attempted to create a symbolic
link concurrently, more that one client would report success instead of
EEXIST. This was caused by code in the new client that mapped EEXIST to
OK assuming it was caused by a retried RPC request.
Since the old client did not do this, the patch defaults to the old
behaviour and permits the new behaviour to be enabled via a sysctl.

Reported by:	alex.burlyga.ietf@gmail.com
Tested by:	alex.burlyga.ietf@gmail.com
MFC after:	2 weeks
2015-07-03 01:15:21 +00:00

5896 lines
173 KiB
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/*-
* 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.
* 4. 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>
__FBSDID("$FreeBSD$");
/*
* 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.
*/
#ifndef APPLEKEXT
#include "opt_inet6.h"
#include <fs/nfs/nfsport.h>
#include <sys/sysctl.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");
/*
* Global variables
*/
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;
NFSCLSTATEMUTEX;
int nfstest_outofseq = 0;
int nfscl_assumeposixlocks = 1;
int nfscl_enablecallb = 0;
short nfsv4_cbport = NFSV4_CBPORT;
int nfstest_openallsetattr = 0;
#endif /* !APPLEKEXT */
#define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
/*
* 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,
};
static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
void *);
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 *, void *);
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 *, void *, 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 *, void *);
static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
struct ucred *, NFSPROC_T *);
static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *,
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, struct ucred *, NFSPROC_T *);
static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *,
NFSPROC_T *);
static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
struct nfsfh *, int, struct ucred *, NFSPROC_T *);
static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
struct nfsclds *, struct nfsclds **);
#ifdef notyet
static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
struct nfsfh *, struct ucred *, NFSPROC_T *, void *);
#endif
/*
* nfs null call from vfs.
*/
APPLESTATIC 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);
error = nfscl_request(nd, vp, p, cred, NULL);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
mbuf_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.
*/
APPLESTATIC 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 (vnode_vtype(vp) == 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,
NULL);
/*
* 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.
*/
APPLESTATIC 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,
void *stuff)
{
u_int32_t *tl;
u_int32_t supported, rmode;
int error;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
*attrflagp = 0;
supported = mode;
NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
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, stuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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, stuff);
/*
* 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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs open rpc
*/
APPLESTATIC 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(vnode_mount(vp));
u_int32_t mode, clidrev;
int ret, newone, error, expireret = 0, retrycnt;
/*
* For NFSv4, Open Ops are only done on Regular Files.
*/
if (vnode_vtype(vp) != 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);
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) {
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);
if (dp != NULL) {
#ifdef APPLE
OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
#else
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);
#endif
(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++;
nfscl_openrelease(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
*/
APPLESTATIC 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;
dp = *dpp;
*dpp = NULL;
nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL);
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);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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);
MALLOC(ndp, struct nfscldeleg *,
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, &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((caddr_t)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 || error == NFSERR_BADSESSION)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
if (!error)
*dpp = ndp;
else if (ndp != NULL)
FREE((caddr_t)ndp, M_NFSCLDELEG);
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* open downgrade rpc
*/
APPLESTATIC 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);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp))))
*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, 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);
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 || error == NFSERR_BADSESSION)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* V4 Close operation.
*/
APPLESTATIC int
nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
{
struct nfsclclient *clp;
int error;
if (vnode_vtype(vp) != VREG)
return (0);
if (doclose)
error = nfscl_doclose(vp, &clp, p);
else
error = nfscl_getclose(vp, &clp);
if (error)
return (error);
nfscl_clientrelease(clp);
return (0);
}
/*
* Close the open.
*/
APPLESTATIC void
nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
{
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);
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);
nfscl_freeopen(op, 0);
NFSUNLOCKCLSTATE();
NFSFREECRED(tcred);
}
/*
* The actual Close RPC.
*/
APPLESTATIC 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);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
if (NFSHASNFSV4N(nmp))
*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];
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);
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 (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* V4 Open Confirm RPC.
*/
APPLESTATIC 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(vnode_mount(vp));
if (NFSHASNFSV4N(nmp))
return (0); /* No confirmation for NFSv4.1. */
nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, 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, 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);
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 || error == NFSERR_BADSESSION)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
mbuf_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.
*/
APPLESTATIC int
nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
struct ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
u_short port;
int error, isinet6 = 0, callblen;
nfsquad_t confirm;
u_int32_t lease;
static u_int32_t rev = 0;
struct nfsclds *dsp, *ndsp, *tdsp;
if (nfsboottime.tv_sec == 0)
NFSSETBOOTTIME(nfsboottime);
clp->nfsc_rev = rev++;
if (NFSHASNFSV4N(nmp)) {
error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq,
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,
dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
if (error == 0) {
NFSLOCKMNT(nmp);
TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess,
nfsclds_list, ndsp)
nfscl_freenfsclds(tdsp);
TAILQ_INIT(&nmp->nm_sess);
TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
nfsclds_list);
NFSUNLOCKMNT(nmp);
} else
nfscl_freenfsclds(dsp);
NFSCL_DEBUG(1, "aft createsess=%d\n", error);
}
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);
}
/*
* 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);
NFSUNLOCKMNT(nmp);
nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, 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, &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);
NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++;
NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++;
confirm.lval[0] = *tl++;
confirm.lval[1] = *tl;
mbuf_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
/*
* and confirm it.
*/
nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
NULL);
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl++ = NFSMNT_MDSSESSION(nmp)->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);
mbuf_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
if (nd->nd_repstat == 0) {
nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
nmp->nm_fhsize, NULL, NULL);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
(void) nfsrv_putattrbit(nd, &attrbits);
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) {
error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
if (error)
goto nfsmout;
clp->nfsc_renew = NFSCL_RENEW(lease);
clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
clp->nfsc_clientidrev++;
if (clp->nfsc_clientidrev == 0)
clp->nfsc_clientidrev++;
}
}
}
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getattr call.
*/
APPLESTATIC int
nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *nap, void *stuff)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
if (nd->nd_flag & ND_NFSV4) {
NFSGETATTR_ATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
}
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
if (!nd->nd_repstat)
error = nfsm_loadattr(nd, nap);
else
error = nd->nd_repstat;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getattr call with non-vnode arguemnts.
*/
APPLESTATIC 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);
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;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Do an nfs setattr operation.
*/
APPLESTATIC int
nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
void *stuff)
{
int error, expireret = 0, openerr, retrycnt;
u_int32_t clidrev = 0, mode;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
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 && vnode_vtype(vp) == 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, stuff);
else
error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
stuff);
if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
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 ||
error == NFSERR_BADSTATEID) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
}
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);
}
static int
nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *rnap, int *attrflagp, void *stuff)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
if (nd->nd_flag & ND_NFSV4)
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
vap->va_type = vnode_vtype(vp);
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, stuff);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
if ((nd->nd_flag & 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, stuff);
mbuf_freem(nd->nd_mrep);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
return (error);
}
/*
* nfs lookup rpc
*/
APPLESTATIC 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, void *stuff)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
struct nfsnode *np;
struct nfsfh *nfhp;
nfsattrbit_t attrbits;
int error = 0, lookupp = 0;
*attrflagp = 0;
*dattrflagp = 0;
if (vnode_vtype(dvp) != VDIR)
return (ENOTDIR);
nmp = VFSTONFS(vnode_mount(dvp));
if (len > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
if (NFSHASNFSV4(nmp) && len == 1 &&
name[0] == '.') {
/*
* Just return the current dir's fh.
*/
np = VTONFS(dvp);
MALLOC(nfhp, struct nfsfh *, 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;
NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
} else {
NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
(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);
}
error = nfscl_request(nd, dvp, p, cred, stuff);
if (error)
return (error);
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);
MALLOC(nfhp, struct nfsfh *, 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;
mbuf_freem(nd->nd_mrep);
return (0);
}
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
ND_NFSV4) {
/* Load the directory attributes. */
error = nfsm_loadattr(nd, dnap);
if (error == 0)
*dattrflagp = 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, stuff);
if ((nd->nd_flag & ND_NFSV3) && !error)
error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
nfsmout:
mbuf_freem(nd->nd_mrep);
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
return (error);
}
/*
* Do a readlink rpc.
*/
APPLESTATIC int
nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
{
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);
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, stuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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, stuff);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Read operation.
*/
APPLESTATIC int
nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
{
int error, expireret = 0, retrycnt;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
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, stuff);
if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
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 ||
error == NFSERR_BADSTATEID) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
}
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;
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, void *stuff)
{
u_int32_t *tl;
int error = 0, len, retlen, tsiz, eof = 0;
struct nfsrv_descript nfsd;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfsrv_descript *nd = &nfsd;
int rsize;
off_t tmp_off;
*attrflagp = 0;
tsiz = uio_uio_resid(uiop);
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);
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, stuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
} 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;
mbuf_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)
mbuf_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.
*/
APPLESTATIC 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,
void *stuff, int called_from_strategy)
{
int error, expireret = 0, retrycnt, nostateid;
u_int32_t clidrev = 0;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfsnode *np = VTONFS(vp);
struct ucred *newcred;
struct nfsfh *nfhp = NULL;
nfsv4stateid_t stateid;
void *lckp;
*must_commit = 0;
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, stuff);
if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
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 ||
error == NFSERR_BADSTATEID) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
}
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, void *stuff)
{
u_int32_t *tl;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfsnode *np = VTONFS(vp);
int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
int wccflag = 0, wsize;
int32_t backup;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
off_t tmp_off;
KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
*attrflagp = 0;
tsiz = uio_uio_resid(uiop);
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;
NFSUNLOCKMNT(nmp);
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;
NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
if (nd->nd_flag & ND_NFSV4) {
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, stuff);
if (error)
return (error);
if (nd->nd_repstat) {
/*
* In case the rpc gets retried, roll
* the uio fileds changed by nfsm_uiombuf()
* back.
*/
uiop->uio_offset -= len;
uio_uio_resid_add(uiop, len);
uio_iov_base_add(uiop, -len);
uio_iov_len_add(uiop, len);
}
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
error = nfscl_wcc_data(nd, vp, nap, attrflagp,
&wccflag, stuff);
if (error)
goto nfsmout;
}
if (!nd->nd_repstat) {
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;
uio_iov_base_add(uiop, -(backup));
uio_iov_len_add(uiop, backup);
uiop->uio_offset -= backup;
uio_uio_resid_add(uiop, backup);
len = rlen;
}
commit = fxdr_unsigned(int, *tl++);
/*
* Return the lowest committment 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 = 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, (nd->nd_flag & ND_NFSV4));
mbuf_freem(nd->nd_mrep);
nd->nd_mrep = NULL;
tsiz -= len;
}
nfsmout:
if (nd->nd_mrep != NULL)
mbuf_freem(nd->nd_mrep);
*iomode = committed;
if (nd->nd_repstat && !error)
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.
*/
APPLESTATIC int
nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
int *attrflagp, int *dattrflagp, void *dstuff)
{
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);
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, dstuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
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, dstuff);
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
nfsmout:
mbuf_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.)
*/
APPLESTATIC 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, void *dstuff)
{
int error = 0, newone, expireret = 0, retrycnt, unlocked;
struct nfsclowner *owp;
struct nfscldeleg *dp;
struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
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);
if (error)
return (error);
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
else
clidrev = 0;
error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
dstuff, &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(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,
dstuff);
}
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, void *dstuff)
{
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);
(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, dstuff);
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, dstuff);
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
nfsmout:
mbuf_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, void *dstuff, 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;
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);
/*
* 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);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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(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, dstuff);
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));
(void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
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);
MALLOC(dp, struct nfscldeleg *,
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, &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);
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(vnode_mount(dvp)), 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((caddr_t)dp, M_NFSCLDELEG);
dp = NULL;
}
if (ret == NFSERR_STALECLIENTID ||
ret == NFSERR_STALEDONTRECOVER ||
ret == NFSERR_BADSESSION)
error = ret;
}
}
nfscl_openrelease(op, error, newone);
*unlockedp = 1;
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
nfscl_initiate_recovery(owp->nfsow_clp);
nfsmout:
if (!error)
*dpp = dp;
else if (dp != NULL)
FREE((caddr_t)dp, M_NFSCLDELEG);
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Nfs remove rpc
*/
APPLESTATIC int
nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
void *dstuff)
{
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(vnode_mount(dvp));
tryagain:
if (NFSHASNFSV4(nmp) && ret == 0) {
ret = nfscl_removedeleg(vp, p, &dstateid);
if (ret == 1) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
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(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);
(void) nfsm_strtom(nd, name, namelen);
error = nfscl_request(nd, dvp, p, cred, dstuff);
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.
*/
mbuf_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, dstuff);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Do an nfs rename rpc.
*/
APPLESTATIC 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, void *fstuff, void *tstuff)
{
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(vnode_mount(fdvp));
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);
} else if (gotfd) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
} else if (gottd) {
NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
}
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(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(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);
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(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(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, fstuff);
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.
*/
mbuf_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.
*/
mbuf_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,
fstuff);
/* 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, tstuff);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs hard link create rpc
*/
APPLESTATIC 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, void *dstuff)
{
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);
if (nd->nd_flag & ND_NFSV4) {
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = txdr_unsigned(NFSV4OP_PUTFH);
}
(void) nfsm_fhtom(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, dstuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
if (!error)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
NULL, dstuff);
} 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, dstuff);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs symbolic link create rpc
*/
APPLESTATIC int
nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
int *dattrflagp, void *dstuff)
{
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(vnode_mount(dvp));
slen = strlen(target);
if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
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, dstuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
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, dstuff);
}
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
mbuf_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
*/
APPLESTATIC 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, void *dstuff)
{
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(vnode_mount(dvp));
fhp = VTONFS(dvp)->n_fhp;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
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(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, dstuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV4)
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
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, dstuff);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
nfsmout:
mbuf_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
*/
APPLESTATIC int
nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error = 0;
*dattrflagp = 0;
if (namelen > NFS_MAXNAMLEN)
return (ENAMETOOLONG);
NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
(void) nfsm_strtom(nd, name, namelen);
error = nfscl_request(nd, dvp, p, cred, dstuff);
if (error)
return (error);
if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
if (nd->nd_repstat && !error)
error = nd->nd_repstat;
mbuf_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 amke 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.
*/
APPLESTATIC int
nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
int *eofp, void *stuff)
{
int len, left;
struct dirent *dp = NULL;
u_int32_t *tl;
nfsquad_t cookie, ncookie;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
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;
long dotfileid, dotdotfileid = 0;
u_int32_t fakefileno = 0xffffffff, rderr;
char *cp;
nfsattrbit_t attrbits, dattrbits;
u_int32_t *tl2 = NULL;
size_t tresid;
KASSERT(uiop->uio_iovcnt == 1 &&
(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
("nfs readdirrpc bad uio"));
/*
* 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 > uio_uio_resid(uiop))
readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
*attrflagp = 0;
if (eofp)
*eofp = 0;
tresid = uio_uio_resid(uiop);
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);
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, stuff);
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 = 0xffffffff;
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 != 0xffffffff)
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;
}
mbuf_freem(nd->nd_mrep);
if (error)
return (error);
nd->nd_mrep = NULL;
dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
dp->d_type = DT_DIR;
dp->d_fileno = dotfileid;
dp->d_namlen = 1;
dp->d_name[0] = '.';
dp->d_name[1] = '\0';
dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uio_uio_resid_add(uiop, -(dp->d_reclen));
uiop->uio_offset += dp->d_reclen;
uio_iov_base_add(uiop, dp->d_reclen);
uio_iov_len_add(uiop, -(dp->d_reclen));
dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
dp->d_type = DT_DIR;
dp->d_fileno = dotdotfileid;
dp->d_namlen = 2;
dp->d_name[0] = '.';
dp->d_name[1] = '.';
dp->d_name[2] = '\0';
dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uio_uio_resid_add(uiop, -(dp->d_reclen));
uiop->uio_offset += dp->d_reclen;
uio_iov_base_add(uiop, dp->d_reclen);
uio_iov_len_add(uiop, -(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);
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, stuff);
if (error)
return (error);
if (!(nd->nd_flag & ND_NFSV2)) {
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp,
stuff);
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 thru 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(long, *tl++);
len = fxdr_unsigned(int, *tl);
}
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
goto nfsmout;
}
tlen = NFSM_RNDUP(len);
if (tlen == len)
tlen += 4; /* To ensure null termination */
left = DIRBLKSIZ - blksiz;
if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
dp->d_reclen += left;
uio_iov_base_add(uiop, left);
uio_iov_len_add(uiop, -(left));
uio_uio_resid_add(uiop, -(left));
uiop->uio_offset += left;
blksiz = 0;
}
if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
bigenough = 0;
if (bigenough) {
dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
dp->d_namlen = len;
dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
dp->d_type = DT_UNKNOWN;
blksiz += dp->d_reclen;
if (blksiz == DIRBLKSIZ)
blksiz = 0;
uio_uio_resid_add(uiop, -(DIRHDSIZ));
uiop->uio_offset += DIRHDSIZ;
uio_iov_base_add(uiop, DIRHDSIZ);
uio_iov_len_add(uiop, -(DIRHDSIZ));
error = nfsm_mbufuio(nd, uiop, len);
if (error)
goto nfsmout;
cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
tlen -= len;
*cp = '\0'; /* null terminate */
cp += tlen; /* points to cookie storage */
tl2 = (u_int32_t *)cp;
uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
uio_uio_resid_add(uiop, -(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 = 0xffffffff;
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 != 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;
}
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,
stuff);
if (error)
goto nfsmout;
}
}
mbuf_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;
dp->d_reclen += left;
uio_iov_base_add(uiop, left);
uio_iov_len_add(uiop, -(left));
uio_uio_resid_add(uiop, -(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)(uio_uio_resid(uiop))))
*eofp = 1;
else if (!bigenough)
*eofp = 0;
else
*eofp = eof;
}
nfsmout:
if (nd->nd_mrep != NULL)
mbuf_freem(nd->nd_mrep);
return (error);
}
#ifndef APPLE
/*
* 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.)
*/
APPLESTATIC int
nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
int *eofp, void *stuff)
{
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(vnode_mount(vp));
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;
long dotfileid, dotdotfileid = 0, fileno = 0;
char *cp;
nfsattrbit_t attrbits, dattrbits;
size_t tresid;
u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
struct timespec dctime;
KASSERT(uiop->uio_iovcnt == 1 &&
(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
("nfs readdirplusrpc bad uio"));
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 = uio_uio_resid(uiop);
/*
* 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);
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, stuff);
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 = 0xffffffff;
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 != 0xffffffff)
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;
}
mbuf_freem(nd->nd_mrep);
if (error)
return (error);
nd->nd_mrep = NULL;
dp = (struct dirent *)uio_iov_base(uiop);
dp->d_type = DT_DIR;
dp->d_fileno = dotfileid;
dp->d_namlen = 1;
dp->d_name[0] = '.';
dp->d_name[1] = '\0';
dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uio_uio_resid_add(uiop, -(dp->d_reclen));
uiop->uio_offset += dp->d_reclen;
uio_iov_base_add(uiop, dp->d_reclen);
uio_iov_len_add(uiop, -(dp->d_reclen));
dp = (struct dirent *)uio_iov_base(uiop);
dp->d_type = DT_DIR;
dp->d_fileno = dotdotfileid;
dp->d_namlen = 2;
dp->d_name[0] = '.';
dp->d_name[1] = '.';
dp->d_name[2] = '\0';
dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
/*
* Just make these offset cookie 0.
*/
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = 0;
*tl = 0;
blksiz += dp->d_reclen;
uio_uio_resid_add(uiop, -(dp->d_reclen));
uiop->uio_offset += dp->d_reclen;
uio_iov_base_add(uiop, dp->d_reclen);
uio_iov_len_add(uiop, -(dp->d_reclen));
}
NFSREADDIRPLUS_ATTRBIT(&attrbits);
if (gotmnton)
NFSSETBIT_ATTRBIT(&attrbits,
NFSATTRBIT_MOUNTEDONFILEID);
}
/*
* 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);
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);
}
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3)
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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 thru 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_unsigned(long, *++tl);
tl++;
}
len = fxdr_unsigned(int, *tl);
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
goto nfsmout;
}
tlen = NFSM_RNDUP(len);
if (tlen == len)
tlen += 4; /* To ensure null termination */
left = DIRBLKSIZ - blksiz;
if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
dp->d_reclen += left;
uio_iov_base_add(uiop, left);
uio_iov_len_add(uiop, -(left));
uio_uio_resid_add(uiop, -(left));
uiop->uio_offset += left;
blksiz = 0;
}
if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
bigenough = 0;
if (bigenough) {
dp = (struct dirent *)uio_iov_base(uiop);
dp->d_namlen = len;
dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
dp->d_type = DT_UNKNOWN;
blksiz += dp->d_reclen;
if (blksiz == DIRBLKSIZ)
blksiz = 0;
uio_uio_resid_add(uiop, -(DIRHDSIZ));
uiop->uio_offset += DIRHDSIZ;
uio_iov_base_add(uiop, DIRHDSIZ);
uio_iov_len_add(uiop, -(DIRHDSIZ));
cnp->cn_nameptr = uio_iov_base(uiop);
cnp->cn_namelen = len;
NFSCNHASHZERO(cnp);
error = nfsm_mbufuio(nd, uiop, len);
if (error)
goto nfsmout;
cp = uio_iov_base(uiop);
tlen -= len;
*cp = '\0';
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;
uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
uio_uio_resid_add(uiop, -(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((caddr_t)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) {
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((caddr_t)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(vnode_mount(vp), vp,
nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
if (!error) {
newvp = NFSTOV(np);
unlocknewvp = 1;
}
}
nfhp = NULL;
if (newvp != NULLVP) {
error = nfscl_loadattrcache(&newvp,
&nfsva, NULL, 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 &&
(newvp->v_type != VDIR ||
dctime.tv_sec != 0)) {
cache_enter_time(ndp->ni_dvp,
ndp->ni_vp, cnp,
&nfsva.na_ctime,
newvp->v_type != VDIR ? NULL :
&dctime);
}
if (unlocknewvp)
vput(newvp);
else
vrele(newvp);
newvp = NULLVP;
}
}
} else if (nfhp != NULL) {
FREE((caddr_t)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,
stuff);
if (error)
goto nfsmout;
}
}
mbuf_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;
dp->d_reclen += left;
uio_iov_base_add(uiop, left);
uio_iov_len_add(uiop, -(left));
uio_uio_resid_add(uiop, -(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 == uio_uio_resid(uiop))
*eofp = 1;
else if (!bigenough)
*eofp = 0;
else
*eofp = eof;
}
nfsmout:
if (nd->nd_mrep != NULL)
mbuf_freem(nd->nd_mrep);
return (error);
}
#endif /* !APPLE */
/*
* Nfs commit rpc
*/
APPLESTATIC int
nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
int error;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
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, stuff);
if (error)
return (error);
error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
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, stuff);
}
nfsmout:
if (!error && nd->nd_repstat)
error = nd->nd_repstat;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* NFS byte range lock rpc.
* (Mostly just calls one of the three lower level RPC routines.)
*/
APPLESTATIC 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(vnode_mount(vp));
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(vnode_mount(vp), cred, p, 1, &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(vnode_mount(vp), cred, p, 1, &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.
*/
APPLESTATIC 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;
nmp = VFSTONFS(vp->v_mount);
NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
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;
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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, NULL);
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 ||
nd->nd_repstat == NFSERR_BADSESSION)
nfscl_initiate_recovery(clp);
nfsmout:
mbuf_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);
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 ||
nd->nd_repstat == NFSERR_BADSESSION)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* The actual Lock RPC.
*/
APPLESTATIC 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];
nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL);
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);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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 ||
nd->nd_repstat == NFSERR_BADSESSION)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs statfs rpc
* (always called with the vp for the mount point)
*/
APPLESTATIC int
nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
void *stuff)
{
u_int32_t *tl = NULL;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
nfsattrbit_t attrbits;
int error;
*attrflagp = 0;
nmp = VFSTONFS(vnode_mount(vp));
if (NFSHASNFSV4(nmp)) {
/*
* For V4, you actually do a getattr.
*/
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
NFSSTATFS_GETATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_USEGSSNAME;
error = nfscl_request(nd, vp, p, cred, stuff);
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, NULL, 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);
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
if (nd->nd_flag & ND_NFSV3) {
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs pathconf rpc
*/
APPLESTATIC int
nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
void *stuff)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp;
u_int32_t *tl;
nfsattrbit_t attrbits;
int error;
*attrflagp = 0;
nmp = VFSTONFS(vnode_mount(vp));
if (NFSHASNFSV4(nmp)) {
/*
* For V4, you actually do a getattr.
*/
NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
NFSPATHCONF_GETATTRBIT(&attrbits);
(void) nfsrv_putattrbit(nd, &attrbits);
nd->nd_flag |= ND_USEGSSNAME;
error = nfscl_request(nd, vp, p, cred, stuff);
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);
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs version 3 fsinfo rpc call
*/
APPLESTATIC int
nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
*attrflagp = 0;
NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Renew RPC.
*/
APPLESTATIC 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;
nmp = clp->nfsc_nmp;
if (nmp == NULL)
return (0);
nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
&dsp->nfsclds_sess);
if (!NFSHASNFSV4N(nmp)) {
/* NFSv4.1 just uses a Sequence Op and not a Renew. */
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
}
nrp = dsp->nfsclds_sockp;
if (nrp == NULL)
/* If NULL, use the MDS socket. */
nrp = &nmp->nm_sockreq;
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
if (error)
return (error);
error = nd->nd_repstat;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Releaselockowner RPC.
*/
APPLESTATIC 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];
if (NFSHASNFSV4N(nmp)) {
/* For NFSv4.1, do a FreeStateID. */
nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
NULL);
nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
} else {
nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Compound to get the mount pt FH.
*/
APPLESTATIC 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;
int error, cnt, len, setnil;
u_int32_t *opcntp;
nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, 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 {
nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
if (nd->nd_repstat == 0)
nmp->nm_fhsize = len;
}
}
error = nd->nd_repstat;
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* This function performs the Delegreturn RPC.
*/
APPLESTATIC 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);
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;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs getacl call.
*/
APPLESTATIC int
nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct acl *aclp, void *stuff)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
(void) nfsrv_putattrbit(nd, &attrbits);
error = nfscl_request(nd, vp, p, cred, stuff);
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;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* nfs setacl call.
*/
APPLESTATIC int
nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct acl *aclp, void *stuff)
{
int error;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
return (error);
}
/*
* nfs setacl call.
*/
static int
nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error;
nfsattrbit_t attrbits;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
if (!NFSHASNFSV4(nmp))
return (EOPNOTSUPP);
NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
NFSZERO_ATTRBIT(&attrbits);
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
(void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
&attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
error = nfscl_request(nd, vp, p, cred, stuff);
if (error)
return (error);
/* Don't care about the pre/postop attributes */
mbuf_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, 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;
nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, 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, 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 (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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 Create Session.
*/
int
nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred,
NFSPROC_T *p)
{
uint32_t crflags, *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
int error, irdcnt;
nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, 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)
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 */
*tl++ = txdr_unsigned(100000); /* Max request size */
*tl++ = txdr_unsigned(100000); /* Max response size */
*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 += 3; /* Skip the other counts. */
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)
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:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 Destroy Session.
*/
int
nfsrpc_destroysession(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;
nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL);
NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID);
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;
mbuf_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;
nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL);
NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
*tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
*tl = NFSMNT_MDSSESSION(nmp)->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;
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* Do the NFSv4.1 LayoutGet.
*/
int
nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen,
nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp,
struct ucred *cred, NFSPROC_T *p, void *stuff)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsfh *nfhp;
struct nfsclflayout *flp, *prevflp, *tflp;
int cnt, error, gotiomode, fhcnt, nfhlen, i, j;
uint8_t *cp;
uint64_t retlen;
flp = NULL;
gotiomode = -1;
nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL);
NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
NFSX_STATEID);
*tl++ = newnfs_false; /* Don't signal availability. */
*tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES);
*tl++ = txdr_unsigned(iomode);
txdr_hyper(offset, tl);
tl += 2;
txdr_hyper(len, tl);
tl += 2;
txdr_hyper(minlen, tl);
tl += 2;
*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);
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 + 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 all the way to the file handle cnt. */
NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER +
6 * NFSX_UNSIGNED + NFSX_V4DEVICEID);
fhcnt = fxdr_unsigned(int, *(tl + 11 +
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 > 1)
flp = malloc(sizeof(*flp) + (fhcnt - 1) *
sizeof(struct nfsfh *),
M_NFSFLAYOUT, M_WAITOK);
else
flp = malloc(sizeof(*flp),
M_NFSFLAYOUT, M_WAITOK);
flp->nfsfl_flags = 0;
flp->nfsfl_fhcnt = 0;
flp->nfsfl_devp = NULL;
flp->nfsfl_off = fxdr_hyper(tl); tl += 2;
retlen = fxdr_hyper(tl); tl += 2;
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 = fxdr_unsigned(int, *tl++);
if (gotiomode == -1)
gotiomode = flp->nfsfl_iomode;
NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode,
(int)flp->nfsfl_iomode);
if (fxdr_unsigned(int, *tl++) !=
NFSLAYOUT_NFSV4_1_FILES) {
printf("NFSv4.1: got non-files layout\n");
error = NFSERR_BADXDR;
goto nfsmout;
}
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);
flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
if (fxdr_unsigned(int, *tl) != fhcnt) {
printf("EEK! bad fhcnt\n");
error = NFSERR_BADXDR;
goto nfsmout;
}
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);
}
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);
} else {
printf("nfscl_layoutget(): got wrong iomode\n");
nfscl_freeflayout(flp);
}
flp = NULL;
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
nfsmout:
if (error != 0 && flp != NULL)
nfscl_freeflayout(flp);
mbuf_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;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct sockaddr_storage ss;
struct nfsclds *dsp = NULL, **dspp;
struct nfscldevinfo *ndi;
int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt;
uint8_t stripeindex;
*ndip = NULL;
ndi = NULL;
nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL);
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 *, 3 * NFSX_UNSIGNED);
if (layouttype != fxdr_unsigned(int, *tl++))
printf("EEK! devinfo layout type not same!\n");
stripecnt = fxdr_unsigned(int, *++tl);
NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
if (stripecnt < 1 || stripecnt > 4096) {
printf("NFS 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_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("NFS devinfo stripeindex %d: too big\n",
(int)stripeindex);
error = NFSERR_BADXDR;
goto nfsmout;
}
nfsfldi_setstripeindex(ndi, i, stripeindex);
}
/* Now, dissect the server address(es). */
safilled = 0;
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);
pos = arc4random() % cnt; /* Choose one. */
safilled = 0;
for (j = 0; j < cnt; j++) {
error = nfsv4_getipaddr(nd, &ss, &isudp);
if (error != 0 && error != EPERM) {
error = NFSERR_BADXDR;
goto nfsmout;
}
if (error == 0 && isudp == 0) {
/*
* The algorithm is:
* - use "pos" entry if it is of the
* same af_family or none of them
* is of the same af_family
* else
* - use the first one of the same
* af_family.
*/
if ((safilled == 0 && ss.ss_family ==
nmp->nm_nam->sa_family) ||
(j == pos &&
(safilled == 0 || ss.ss_family ==
nmp->nm_nam->sa_family)) ||
(safilled == 1 && ss.ss_family ==
nmp->nm_nam->sa_family)) {
error = nfsrpc_fillsa(nmp, &ss,
&dsp, p);
if (error == 0) {
*dspp = dsp;
if (ss.ss_family ==
nmp->nm_nam->sa_family)
safilled = 2;
else
safilled = 1;
}
}
}
}
if (safilled == 0)
break;
}
/* And the notify bits. */
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
if (safilled != 0) {
bitcnt = fxdr_unsigned(int, *tl);
if (bitcnt > 0) {
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
if (notifybitsp != NULL)
*notifybitsp =
fxdr_unsigned(uint32_t, *tl);
}
*ndip = ndi;
} else
error = EPERM;
}
if (nd->nd_repstat != 0)
error = nd->nd_repstat;
nfsmout:
if (error != 0 && ndi != NULL)
nfscl_freedevinfo(ndi);
mbuf_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, int layoutupdatecnt, uint8_t *layp, struct ucred *cred,
NFSPROC_T *p, void *stuff)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error, outcnt, i;
uint8_t *cp;
nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL);
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);
*tl = txdr_unsigned(layoutupdatecnt);
if (layoutupdatecnt > 0) {
KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES,
("Must be nil for Files Layout"));
outcnt = NFSM_RNDUP(layoutupdatecnt);
NFSM_BUILD(cp, uint8_t *, outcnt);
NFSBCOPY(layp, cp, layoutupdatecnt);
cp += layoutupdatecnt;
for (i = 0; i < (outcnt - layoutupdatecnt); i++)
*cp++ = 0x0;
}
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;
mbuf_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, int layoutcnt, uint32_t *layp,
struct ucred *cred, NFSPROC_T *p, void *stuff)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
int error, outcnt, i;
uint8_t *cp;
nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL);
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];
*tl = txdr_unsigned(layoutcnt);
if (layoutcnt > 0) {
outcnt = NFSM_RNDUP(layoutcnt);
NFSM_BUILD(cp, uint8_t *, outcnt);
NFSBCOPY(layp, cp, layoutcnt);
cp += layoutcnt;
for (i = 0; i < (outcnt - layoutcnt); i++)
*cp++ = 0x0;
}
}
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:
mbuf_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 *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
{
struct nfscllayout *lyp;
struct nfsclflayout *flp, *tflp;
struct nfscldevinfo *dip;
struct nfsclflayouthead flh;
int error = 0, islocked, layoutlen, recalled, retonclose;
nfsv4stateid_t stateid;
*lypp = NULL;
/*
* 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, &flp, &recalled);
islocked = 0;
if (lyp == NULL || flp == NULL) {
if (recalled != 0)
return (EIO);
LIST_INIT(&flh);
layoutlen = NFSMNT_MDSSESSION(nmp)->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, INT64_MAX,
(uint64_t)0, layoutlen, &stateid, &retonclose,
&flh, cred, p, NULL);
} 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, INT64_MAX,
(uint64_t)0, layoutlen, &stateid, &retonclose,
&flh, cred, p, NULL);
}
if (error == 0)
LIST_FOREACH(tflp, &flh, nfsfl_list) {
error = nfscl_adddevinfo(nmp, NULL, tflp);
if (error != 0) {
error = nfsrpc_getdeviceinfo(nmp,
tflp->nfsfl_dev,
NFSLAYOUT_NFSV4_1_FILES,
notifybitsp, &dip, cred, p);
if (error != 0)
break;
error = nfscl_adddevinfo(nmp, dip,
tflp);
if (error != 0)
printf(
"getlayout: cannot add\n");
}
}
if (error == 0) {
/*
* nfscl_layout() always returns with the nfsly_lock
* set to a refcnt (shared lock).
*/
error = nfscl_layout(nmp, vp, nfhp->nfh_fh,
nfhp->nfh_len, &stateid, retonclose, &flh, &lyp,
cred, p);
if (error == 0)
*lypp = lyp;
} else if (islocked != 0)
nfsv4_unlock(&lyp->nfsly_lock, 0);
} 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_storage *ssp,
struct nfsclds **dspp, NFSPROC_T *p)
{
struct sockaddr_in *msad, *sad, *ssd;
struct sockaddr_in6 *msad6, *sad6, *ssd6;
struct nfsclclient *clp;
struct nfssockreq *nrp;
struct nfsclds *dsp, *tdsp;
int error;
enum nfsclds_state retv;
uint32_t sequenceid;
KASSERT(nmp->nm_sockreq.nr_cred != NULL,
("nfsrpc_fillsa: NULL nr_cred"));
NFSLOCKCLSTATE();
clp = nmp->nm_clp;
NFSUNLOCKCLSTATE();
if (clp == NULL)
return (EPERM);
if (ssp->ss_family == AF_INET) {
ssd = (struct sockaddr_in *)ssp;
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 &&
ssd->sin_addr.s_addr == msad->sin_addr.s_addr &&
ssd->sin_port == msad->sin_port &&
(tdsp->nfsclds_flags & NFSCLDS_DS) != 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 = ssd->sin_port;
sad->sin_addr.s_addr = ssd->sin_addr.s_addr;
nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
nrp->nr_nam = (struct sockaddr *)sad;
} else if (ssp->ss_family == AF_INET6) {
ssd6 = (struct sockaddr_in6 *)ssp;
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(&ssd6->sin6_addr,
&msad6->sin6_addr) &&
ssd6->sin6_port == msad6->sin6_port &&
(tdsp->nfsclds_flags & NFSCLDS_DS) != 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 = ssd6->sin6_port;
NFSBCOPY(&ssd6->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 = NFS_VER4;
/*
* 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);
NFSCL_DEBUG(3, "DS connect=%d\n", error);
/* Now, do the exchangeid and create session. */
if (error == 0)
error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS,
&dsp, nrp->nr_cred, p);
NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
if (error == 0) {
dsp->nfsclds_sockp = nrp;
NFSLOCKMNT(nmp);
retv = nfscl_getsameserver(nmp, dsp, &tdsp);
NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
if (retv == NFSDSP_USETHISSESSION) {
NFSUNLOCKMNT(nmp);
/*
* If there is already a session for this server,
* use it.
*/
(void)newnfs_disconnect(nrp);
nfscl_freenfsclds(dsp);
*dspp = tdsp;
return (0);
}
if (retv == NFSDSP_SEQTHISSESSION)
sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid;
else
sequenceid = dsp->nfsclds_sess.nfsess_sequenceid;
NFSUNLOCKMNT(nmp);
error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
nrp, 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)
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);
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;
mbuf_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;
}
/*
* 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, struct ucred *cred, NFSPROC_T *p)
{
struct nfsnode *np = VTONFS(vp);
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfscllayout *layp;
struct nfscldevinfo *dip;
struct nfsclflayout *rflp;
nfsv4stateid_t stateid;
struct ucred *newcred;
uint64_t lastbyte, len, off, oresid, xfer;
int eof, error, iolaymode, recalled;
void *lckp;
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, &rflp, &recalled);
if (layp == NULL || rflp == NULL) {
if (recalled != 0) {
NFSFREECRED(newcred);
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,
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;
dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev,
rflp->nfsfl_devp);
if (dip != NULL) {
error = nfscl_doflayoutio(vp, uiop, iomode,
must_commit, &eof, &stateid, rwaccess, dip,
layp, rflp, off, xfer, newcred, p);
nfscl_reldevinfo(dip);
lastbyte = off + xfer - 1;
if (error == 0) {
NFSLOCKCLSTATE();
if (lastbyte > layp->nfsly_lastbyte)
layp->nfsly_lastbyte = lastbyte;
NFSUNLOCKCLSTATE();
}
} else
error = EIO;
if (error == 0)
len -= (oresid - (uint64_t)uiop->uio_resid);
}
}
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 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 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, struct ucred *cred, NFSPROC_T *p)
{
uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
int commit_thru_mds, error = 0, stripe_index, stripe_pos;
struct nfsnode *np;
struct nfsfh *fhp;
struct nfsclds **dspp;
np = VTONFS(vp);
rel_off = off - flp->nfsfl_patoff;
stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
dp->nfsdi_stripecnt;
transfer = stripe_unit_size - (rel_off % stripe_unit_size);
/* 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 (len > transfer)
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;
else
commit_thru_mds = 0;
if (rwflag == FREAD)
error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
io_off, xfer, fhp, cred, p);
else {
error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
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);
}
/*
* 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,
struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
int error, retlen;
struct nfsrv_descript nfsd;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfsrv_descript *nd = &nfsd;
struct nfssockreq *nrp;
nd->nd_mrep = NULL;
nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len,
NULL, &dsp->nfsclds_sess);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
txdr_hyper(io_off, tl);
*(tl + 2) = txdr_unsigned(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, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
if (error != 0)
return (error);
if (nd->nd_repstat != 0) {
error = nd->nd_repstat;
goto nfsmout;
}
NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
*eofp = fxdr_unsigned(int, *tl);
NFSM_STRSIZ(retlen, len);
error = nfsm_mbufuio(nd, uiop, retlen);
nfsmout:
if (nd->nd_mrep != NULL)
mbuf_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, struct ucred *cred, NFSPROC_T *p)
{
uint32_t *tl;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
int error, rlen, commit, committed = NFSWRITE_FILESYNC;
int32_t backup;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfssockreq *nrp;
KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
nd->nd_mrep = NULL;
nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len,
NULL, &dsp->nfsclds_sess);
nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
txdr_hyper(io_off, tl);
tl += 2;
*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, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
if (error != 0)
return (error);
if (nd->nd_repstat != 0) {
/*
* In case the rpc gets retried, roll
* the uio fileds changed by nfsm_uiombuf()
* back.
*/
uiop->uio_offset -= len;
uio_uio_resid_add(uiop, len);
uio_iov_base_add(uiop, -len);
uio_iov_len_add(uiop, len);
error = nd->nd_repstat;
} else {
NFSM_DISSECT(tl, uint32_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;
uio_iov_base_add(uiop, -(backup));
uio_iov_len_add(uiop, backup);
uiop->uio_offset -= backup;
uio_uio_resid_add(uiop, backup);
len = rlen;
}
commit = fxdr_unsigned(int, *tl++);
/*
* Return the lowest committment 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 = 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 = 1;
NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
}
NFSUNLOCKDS(dsp);
}
}
nfsmout:
if (nd->nd_mrep != NULL)
mbuf_freem(nd->nd_mrep);
*iomode = committed;
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
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)
{
struct nfsclds *dsp, *cur_dsp;
/*
* Search the list of nfsclds structures for one with the same
* server.
*/
cur_dsp = NULL;
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)) {
NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
TAILQ_FIRST(&nmp->nm_sess), dsp,
dsp->nfsclds_flags);
/* Server major id matches. */
if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
*retdspp = dsp;
return (NFSDSP_USETHISSESSION);
}
/*
* Note the first match, so it can be used for
* sequence'ing new sessions.
*/
if (cur_dsp == NULL)
cur_dsp = dsp;
}
}
if (cur_dsp != NULL) {
*retdspp = cur_dsp;
return (NFSDSP_SEQTHISSESSION);
}
return (NFSDSP_NOTFOUND);
}
#ifdef notyet
/*
* NFS commit rpc to a DS.
*/
static int
nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff)
{
uint32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
struct nfssockreq *nrp;
int error;
nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len,
NULL, &dsp->nfsclds_sess);
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, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
if (error)
return (error);
if (nd->nd_repstat == 0) {
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;
mbuf_freem(nd->nd_mrep);
return (error);
}
#endif
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