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freebsd-skq/sys/fs/nfsclient/nfs_clrpcops.c

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Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
/*-
* 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 <fs/nfs/nfsport.h>
/*
* 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];
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))
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 *, u_char *,
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 *);
/*
* 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;
For the experimental NFSv4 client, make sure that attributes that predate the issue of a delegation are not cached once the delegation is held. This is necessary, since cached attributes remain valid while the delegation is held. MFC after: 2 weeks
2010-07-13 23:14:39 +00:00
/*
* 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);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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);
The experimental NFS client was not filling in recovery credentials for opens done locally in the client when a delegation for the file was held. This could cause the client to crash in crsetgroups() when recovering from a server crash/reboot. This patch fills in the recovery credentials for this case, in order to avoid the client crash. Also, add KASSERT()s to the credential copy functions, to catch any other cases where the credentials aren't filled in correctly. MFC after: 1 week
2010-04-15 22:57:30 +00:00
} 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);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
/*
* 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) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_open");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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_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);
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++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
*tl = op->nfso_own->nfsow_clp->nfsc_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);
*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);
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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, ret, "nfs_open");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, ret, "nfs_open2");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} while (ret == NFSERR_DELAY);
if (ret) {
if (ndp != NULL)
FREE((caddr_t)ndp, M_NFSCLDELEG);
if (ret == NFSERR_STALECLIENTID ||
ret == NFSERR_STALEDONTRECOVER)
error = ret;
}
}
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
if (!error)
*dpp = ndp;
else if (ndp != NULL)
FREE((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);
*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)
nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
nfsmout:
mbuf_freem(nd->nd_mrep);
return (error);
}
/*
* V4 Close operation.
*/
APPLESTATIC int
Change the experimental NFSv4 client so that it does not do the NFSv4 Close operations until ncl_inactive(). This is necessary so that the Open StateIDs are available for doing I/O on mmap'd files after VOP_CLOSE(). I also changed some indentation for the nfscl_getclose() function. Approved by: kib (mentor)
2009-05-18 21:22:03 +00:00
nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
{
struct nfsclclient *clp;
int error;
if (vnode_vtype(vp) != VREG)
return (0);
Change the experimental NFSv4 client so that it does not do the NFSv4 Close operations until ncl_inactive(). This is necessary so that the Open StateIDs are available for doing I/O on mmap'd files after VOP_CLOSE(). I also changed some indentation for the nfscl_getclose() function. Approved by: kib (mentor)
2009-05-18 21:22:03 +00:00
if (doclose)
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
error = nfscl_doclose(vp, &clp, p);
Change the experimental NFSv4 client so that it does not do the NFSv4 Close operations until ncl_inactive(). This is necessary so that the Open StateIDs are available for doing I/O on mmap'd files after VOP_CLOSE(). I also changed some indentation for the nfscl_getclose() function. Approved by: kib (mentor)
2009-05-18 21:22:03 +00:00
else
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
error = nfscl_getclose(vp, &clp);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
if (error)
return (error);
nfscl_clientrelease(clp);
return (0);
}
/*
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
* Close the open.
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
*/
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
APPLESTATIC void
nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
{
struct nfsrv_descript nfsd, *nd = &nfsd;
struct nfscllockowner *lp;
struct nfscllock *lop, *nlop;
struct ucred *tcred;
u_int64_t off = 0, len = 0;
u_int32_t type = NFSV4LOCKT_READ;
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
int error, do_unlock, trycnt;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
tcred = newnfs_getcred();
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
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) {
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
if (op->nfso_posixlock == 0) {
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
off = lop->nfslo_first;
len = lop->nfslo_end - lop->nfslo_first;
if (lop->nfslo_type == F_WRLCK)
type = NFSV4LOCKT_WRITE;
else
type = NFSV4LOCKT_READ;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
}
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
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,
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(int)nd->nd_repstat,
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
"nfs_close");
} while ((nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_DELAY) &&
error == 0 && trycnt++ < 5);
if (op->nfso_posixlock)
do_unlock = 0;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
}
nfscl_freelock(lop, 0);
}
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
}
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
/*
* 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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_close");
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
} while (error == NFSERR_GRACE);
NFSLOCKCLSTATE();
nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
/*
* Move the lockowner to nfsc_defunctlockowner,
* so the Renew thread will do the ReleaseLockOwner
* Op on it later. There might still be other
* opens using the same lockowner name.
*/
lp = LIST_FIRST(&op->nfso_lock);
if (lp != NULL) {
while (LIST_NEXT(lp, nfsl_list) != NULL)
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
lp = LIST_NEXT(lp, nfsl_list);
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
LIST_PREPEND(&nmp->nm_clp->nfsc_defunctlockowner,
&op->nfso_lock, lp, nfsl_list);
LIST_INIT(&op->nfso_lock);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
}
Since the nfscl_getclose() function both decremented open counts and, optionally, created a separate list of NFSv4 opens to be closed, it was possible for the associated OpenOwner to be free'd before the Open was closed. The problem was that the Open was taken off the OpenOwner list before the Close RPC was done and OpenOwners can be free'd once the list is empty. This patch separates out the case of doing the Close RPC into a separate function called nfscl_doclose() and simplifies nfsrpc_doclose() so that it closes a single open instead of a list of them. This avoids removing the Open from the OpenOwner list before doing the Close RPC. Approved by: re (kensmith), kib (mentor)
2009-07-09 19:00:29 +00:00
nfscl_freeopen(op, 0);
NFSUNLOCKCLSTATE();
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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);
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
*tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
*tl++ = op->nfso_stateid.seqid;
*tl++ = op->nfso_stateid.other[0];
*tl++ = op->nfso_stateid.other[1];
*tl = op->nfso_stateid.other[2];
if (syscred)
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, NULL);
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)
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;
int error;
nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)),
nfhp, fhlen, 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)
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,
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;
When vfs.newnfs.callback_addr is set to an IPv4 address, the experimental NFSv4 client might try and use it as an IPv6 address, breaking callbacks. The fix simply initializes the isinet6 variable for this case. Approved by: re (kensmith), kib (mentor)
2009-07-22 18:10:44 +00:00
int error, isinet6 = 0, callblen;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
nfsquad_t confirm;
u_int32_t lease;
static u_int32_t rev = 0;
if (nfsboottime.tv_sec == 0)
NFSSETBOOTTIME(nfsboottime);
nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = txdr_unsigned(nfsboottime.tv_sec);
*tl = txdr_unsigned(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);
if (error)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
clp->nfsc_clientid.lval[0] = *tl++;
clp->nfsc_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);
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
*tl++ = clp->nfsc_clientid.lval[0];
*tl++ = clp->nfsc_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);
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);
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);
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)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
int error, vers = NFS_VER2;
nfsattrbit_t attrbits;
nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL);
if (nd->nd_flag & ND_NFSV4) {
vers = NFS_VER4;
NFSGETATTR_ATTRBIT(&attrbits);
(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);
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);
}
/*
* 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, 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, 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)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (!openerr)
Change the experimental NFSv4 client so that it does not do the NFSv4 Close operations until ncl_inactive(). This is necessary so that the Open StateIDs are available for doing I/O on mmap'd files after VOP_CLOSE(). I also changed some indentation for the nfscl_getclose() function. Approved by: kib (mentor)
2009-05-18 21:22:03 +00:00
(void) nfsrpc_close(vp, 0, p);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_setattr");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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_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);
goto nfsmout;
}
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;
goto nfsmout;
}
}
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;
if (p == NULL)
newcred = NFSNEWCRED(cred);
}
retrycnt = 0;
do {
lckp = NULL;
if (NFSHASNFSV4(nmp))
(void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp);
error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
attrflagp, stuff);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_read");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
if (error && retrycnt >= 4)
error = EIO;
if (NFSHASNFSV4(nmp) && p == NULL)
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;
*attrflagp = 0;
tsiz = uio_uio_resid(uiop);
if (uiop->uio_offset + tsiz > 0xffffffff &&
!NFSHASNFSV3OR4(nmp))
return (EFBIG);
nd->nd_mrep = NULL;
while (tsiz > 0) {
*attrflagp = 0;
len = (tsiz > nmp->nm_rsize) ? nmp->nm_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, nmp->nm_rsize);
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 the experimental NFS client is handling an NFSv4 server reboot with delegations enabled, the recovery could fail if the renew thread is trying to return a delegation, since it will not do the recovery. This patch fixes the above by having nfscl_recalldeleg() fail with the I/O operations returning EIO, so that they will be attempted later. Most of the patch consists of adding an argument to various functions to indicate the delegation recall case where this needs to be done. MFC after: 1 week
2010-04-22 23:51:01 +00:00
* 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.
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
*/
APPLESTATIC int
nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, u_char *verfp,
struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
When the experimental NFS client is handling an NFSv4 server reboot with delegations enabled, the recovery could fail if the renew thread is trying to return a delegation, since it will not do the recovery. This patch fixes the above by having nfscl_recalldeleg() fail with the I/O operations returning EIO, so that they will be attempted later. Most of the patch consists of adding an argument to various functions to indicate the delegation recall case where this needs to be done. MFC after: 1 week
2010-04-22 23:51:01 +00:00
void *stuff, int called_from_strategy)
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
{
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;
if (nmp->nm_clp != NULL)
clidrev = nmp->nm_clp->nfsc_clientidrev;
newcred = cred;
if (NFSHASNFSV4(nmp)) {
if (p == NULL)
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, newcred, p, &stateid, &lckp);
if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
stateid.other[2] == 0) {
nostateid = 1;
printf("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, verfp,
newcred, &stateid, p, nap, attrflagp, stuff);
if (error == NFSERR_STALESTATEID)
nfscl_initiate_recovery(nmp->nm_clp);
if (lckp != NULL)
nfscl_lockderef(lckp);
if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
error == NFSERR_OLDSTATEID) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_write");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} else if ((error == NFSERR_EXPIRED ||
error == NFSERR_BADSTATEID) && clidrev != 0) {
expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
}
retrycnt++;
When the experimental NFS client is handling an NFSv4 server reboot with delegations enabled, the recovery could fail if the renew thread is trying to return a delegation, since it will not do the recovery. This patch fixes the above by having nfscl_recalldeleg() fail with the I/O operations returning EIO, so that they will be attempted later. Most of the patch consists of adding an argument to various functions to indicate the delegation recall case where this needs to be done. MFC after: 1 week
2010-04-22 23:51:01 +00:00
} while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
((error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
(error == NFSERR_OLDSTATEID && retrycnt < 20) ||
((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
expireret == 0 && clidrev != 0 && retrycnt < 4));
When the experimental NFS client is handling an NFSv4 server reboot with delegations enabled, the recovery could fail if the renew thread is trying to return a delegation, since it will not do the recovery. This patch fixes the above by having nfscl_recalldeleg() fail with the I/O operations returning EIO, so that they will be attempted later. Most of the patch consists of adding an argument to various functions to indicate the delegation recall case where this needs to be done. MFC after: 1 week
2010-04-22 23:51:01 +00:00
if (error != 0 && (retrycnt >= 4 ||
((error == NFSERR_STALESTATEID ||
error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
error = EIO;
if (NFSHASNFSV4(nmp) && p == NULL)
NFSFREECRED(newcred);
return (error);
}
/*
* The actual write RPC.
*/
static int
nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
u_char *verfp, 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;
In NFS clients, instead of inconsistently using #ifdef DIAGNOSTIC and #ifndef DIAGNOSTIC for debug assertions, prefer KASSERT(). Also change one #ifdef DIAGNOSTIC in the new nfs server. Submitted by: Mikolaj Golub <to.my.trociny gmail com> MFC after: 2 weeks
2010-06-13 05:24:27 +00:00
KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
*attrflagp = 0;
tsiz = uio_uio_resid(uiop);
NFSLOCKMNT(nmp);
if (uiop->uio_offset + tsiz > 0xffffffff &&
!NFSHASNFSV3OR4(nmp)) {
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) {
nmp = VFSTONFS(vnode_mount(vp));
if (nmp == NULL) {
error = ENXIO;
goto nfsmout;
}
*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.
* So, we just get the attributes that change with each
* write Op.
* 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;
if (verfp != NULL)
NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF);
NFSLOCKMNT(nmp);
if (!NFSHASWRITEVERF(nmp)) {
NFSBCOPY((caddr_t)tl,
(caddr_t)&nmp->nm_verf[0],
NFSX_VERF);
NFSSETWRITEVERF(nmp);
}
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) {
Fix the experimental NFS client so that it can create Unix domain sockets on an NFSv4 mount point. It was generating incorrect XDR in the request for this case. Tested by: infofarmer MFC after: 2 weeks
2009-12-31 18:02:48 +00:00
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);
}
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
}
(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);
For the experimental NFSv4 client, make sure that attributes that predate the issue of a delegation are not cached once the delegation is held. This is necessary, since cached attributes remain valid while the delegation is held. MFC after: 2 weeks
2010-07-13 23:14:39 +00:00
/*
* 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.
*/
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_open");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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_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;
*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++ = owp->nfsow_clp->nfsc_clientid.lval[0];
*tl = owp->nfsow_clp->nfsc_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) {
*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);
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);
error = nfscl_request(nd, dvp, p, cred, dstuff);
if (error)
return (error);
error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
if (error)
goto nfsmout;
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;
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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, ret, "nfs_create");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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) {
np = VTONFS(dvp);
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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, ret, "nfs_crt2");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} while (ret == NFSERR_DELAY);
if (ret) {
if (dp != NULL)
FREE((caddr_t)dp, M_NFSCLDELEG);
if (ret == NFSERR_STALECLIENTID ||
ret == NFSERR_STALEDONTRECOVER)
error = ret;
}
}
nfscl_openrelease(op, error, newone);
*unlockedp = 1;
}
if (nd->nd_repstat != 0 && error == 0)
error = nd->nd_repstat;
if (error == NFSERR_STALECLIENTID)
nfscl_initiate_recovery(owp->nfsow_clp);
nfsmout:
if (!error)
*dpp = dp;
else if (dp != NULL)
FREE((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);
*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);
*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);
*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.
*/
if (error == EEXIST)
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;
*nfhpp = NULL;
*attrflagp = 0;
*dattrflagp = 0;
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);
}
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 ((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 you have a reply to a retry.
*/
if (error == EEXIST)
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;
In NFS clients, instead of inconsistently using #ifdef DIAGNOSTIC and #ifndef DIAGNOSTIC for debug assertions, prefer KASSERT(). Also change one #ifdef DIAGNOSTIC in the new nfs server. Submitted by: Mikolaj Golub <to.my.trociny gmail com> MFC after: 2 weeks
2010-06-13 05:24:27 +00:00
KASSERT(uiop->uio_iovcnt == 1 &&
(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
("nfs readdirrpc bad uio"));
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
/*
* 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) {
#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
#else
error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
#endif
if (error)
return (error);
dotfileid = nfsva.na_fileid;
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);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
len = fxdr_unsigned(int, *(tl + 2));
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);
This patch fixes the Experimental NFS client to properly deal with 32 bit or 64 bit fileid's in NFSv2 and NFSv3. Without this fix, invalid casting (and sign extension) was creating problems for any fileid greater than 2^31. We discovered this because we have test clusters with more than 2 billion allocated files and 64-bit ino_t's (and friend structures). Reviewed by: rmacklem Approved by: zml (mentor) MFC after: 2 weeks
2011-03-30 01:10:11 +00:00
nfsva.na_fileid = fxdr_hyper(tl);
tl += 2;
len = fxdr_unsigned(int, *tl);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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;
}
/*
* Add extra empty records to any remaining DIRBLKSIZ chunks.
*/
while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) {
dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
dp->d_type = DT_UNKNOWN;
dp->d_fileno = 0;
dp->d_namlen = 0;
dp->d_name[0] = '\0';
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = cookie.lval[0];
*tl = cookie.lval[1];
dp->d_reclen = DIRBLKSIZ;
uio_iov_base_add(uiop, DIRBLKSIZ);
uio_iov_len_add(uiop, -(DIRBLKSIZ));
uio_uio_resid_add(uiop, -(DIRBLKSIZ));
uiop->uio_offset += DIRBLKSIZ;
}
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;
Fix readdirplus in the experimental NFS client so that it skips over ".." to avoid a LOR race with nfs_lookup(). This fix is analagous to r138256 in the regular NFS client. MFC after: 2 weeks
2011-04-17 02:44:51 +00:00
int isdotdot = 0, unlocknewvp = 0;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
long dotfileid, dotdotfileid = 0, fileno = 0;
char *cp;
nfsattrbit_t attrbits, dattrbits;
size_t tresid;
u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
In NFS clients, instead of inconsistently using #ifdef DIAGNOSTIC and #ifndef DIAGNOSTIC for debug assertions, prefer KASSERT(). Also change one #ifdef DIAGNOSTIC in the new nfs server. Submitted by: Mikolaj Golub <to.my.trociny gmail com> MFC after: 2 weeks
2010-06-13 05:24:27 +00:00
KASSERT(uiop->uio_iovcnt == 1 &&
(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
("nfs readdirplusrpc bad uio"));
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
*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) {
#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
#else
error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
#endif
if (error)
return (error);
dotfileid = nfsva.na_fileid;
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);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
len = fxdr_unsigned(int, *(tl + 2));
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;
}
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;
Fix readdirplus in the experimental NFS client so that it skips over ".." to avoid a LOR race with nfs_lookup(). This fix is analagous to r138256 in the regular NFS client. MFC after: 2 weeks
2011-04-17 02:44:51 +00:00
if (len == 2 && cnp->cn_nameptr[0] == '.' &&
cnp->cn_nameptr[1] == '.')
isdotdot = 1;
else
isdotdot = 0;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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;
Fix readdirplus in the experimental NFS client so that it skips over ".." to avoid a LOR race with nfs_lookup(). This fix is analagous to r138256 in the regular NFS client. MFC after: 2 weeks
2011-04-17 02:44:51 +00:00
} 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);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} else {
error = nfscl_nget(vnode_mount(vp), vp,
Add a lktype flags argument to nfscl_nget() and ncl_nget() in the experimental NFS client so that its nfs_lookup() function can use cn_lkflags in a manner analagous to the regular NFS client. MFC after: 2 weeks
2011-04-16 23:20:21 +00:00
nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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) {
Store the full timestamp when caching timestamps of files and directories for purposes of validating name cache entries. This closes races where two updates to a file or directory within the same second could result in stale entries in the name cache. While here, remove the 'n_expiry' field as it is no longer used. Reviewed by: rmacklem MFC after: 1 week
2010-09-07 14:29:45 +00:00
np->n_ctime = np->n_vattr.na_ctime;
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
cache_enter(ndp->ni_dvp,ndp->ni_vp,cnp);
}
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;
}
/*
* Add extra empty records to any remaining DIRBLKSIZ chunks.
*/
while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
dp = (struct dirent *)uio_iov_base(uiop);
dp->d_type = DT_UNKNOWN;
dp->d_fileno = 0;
dp->d_namlen = 0;
dp->d_name[0] = '\0';
tl = (u_int32_t *)&dp->d_name[4];
*tl++ = cookie.lval[0];
*tl = cookie.lval[1];
dp->d_reclen = DIRBLKSIZ;
uio_iov_base_add(uiop, DIRBLKSIZ);
uio_iov_len_add(uiop, -(DIRBLKSIZ));
uio_uio_resid_add(uiop, -(DIRBLKSIZ));
uiop->uio_offset += DIRBLKSIZ;
}
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, u_char *verfp, struct nfsvattr *nap, int *attrflagp,
void *stuff)
{
u_int32_t *tl;
struct nfsrv_descript nfsd, *nd = &nfsd;
nfsattrbit_t attrbits;
int error;
*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);
NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF);
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)
{
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(vp, cred, p, &clp);
if (error)
return (error);
error = nfscl_lockt(vp, clp, off, len, fl, p);
if (!error) {
clidrev = clp->nfsc_clientidrev;
error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
p);
} else if (error == -1) {
error = 0;
}
nfscl_clientrelease(clp);
} else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
/*
* We must loop around for all lockowner cases.
*/
callcnt = 0;
error = nfscl_getcl(vp, cred, p, &clp);
if (error)
return (error);
do {
error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
clp, &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);
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)
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, (int)nd->nd_repstat,
"nfs_advlock");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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);
} else if (op == F_SETLK) {
error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
NULL, 0, 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) {
An NFSv4 server will reply NFSERR_GRACE for non-recovery RPCs during the grace period after startup. This grace period must be at least the lease duration, which is typically 1-2 minutes. It seems prudent for the experimental NFS client to wait a few seconds before retrying such an RPC, so that the server isn't flooded with non-recovery RPCs during recovery. This patch adds an argument to nfs_catnap() to implement a 5 second delay for this case. MFC after: 1 week
2010-04-24 22:52:14 +00:00
(void) nfs_catnap(PZERO, error, "nfs_advlock");
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
} 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_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)
{
u_int32_t *tl;
int error, type, size;
u_int8_t own[NFSV4CL_LOCKNAMELEN];
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++ = clp->nfsc_clientid.lval[0];
*tl = clp->nfsc_clientid.lval[1];
nfscl_filllockowner(p, own);
(void) nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN);
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)
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);
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++;
*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);
NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
if (error)
return (error);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
lp->nfsl_stateid.seqid = *tl++;
lp->nfsl_stateid.other[0] = *tl++;
lp->nfsl_stateid.other[1] = *tl++;
lp->nfsl_stateid.other[2] = *tl;
} else if (nd->nd_repstat == NFSERR_STALESTATEID)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
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;
nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, 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);
*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++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
*tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1];
(void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
} else {
*tl = newnfs_false;
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
*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);
if (error)
return (error);
if (newone)
NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
if (nd->nd_repstat == 0) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
lp->nfsl_stateid.seqid = *tl++;
lp->nfsl_stateid.other[0] = *tl++;
lp->nfsl_stateid.other[1] = *tl++;
lp->nfsl_stateid.other[2] = *tl;
} else if (nd->nd_repstat == NFSERR_DENIED) {
NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
size = fxdr_unsigned(int, *(tl + 7));
if (size < 0 || size > NFSV4_OPAQUELIMIT)
error = EBADRPC;
if (!error)
error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
} else if (nd->nd_repstat == NFSERR_STALESTATEID)
nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
nfsmout:
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 ucred *cred, NFSPROC_T *p)
{
u_int32_t *tl;
struct nfsrv_descript nfsd;
struct nfsrv_descript *nd = &nfsd;
struct nfsmount *nmp;
int error;
nmp = clp->nfsc_nmp;
if (nmp == NULL)
return (0);
nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = clp->nfsc_clientid.lval[0];
*tl = clp->nfsc_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);
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,
struct ucred *cred, NFSPROC_T *p)
{
struct nfsrv_descript nfsd, *nd = &nfsd;
u_int32_t *tl;
int error;
nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL);
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = nmp->nm_clp->nfsc_clientid.lval[0];
*tl = nmp->nm_clp->nfsc_clientid.lval[1];
(void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
nd->nd_flag |= ND_USEGSSNAME;
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
NFS_PROG, NFS_VER4, NULL, 1, 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);
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');
*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);
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);
NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
*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);
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);
Modify the experimental NFSv4 server so that it handles crossing of server mount points properly. The functions nfsvno_fillattr() and nfsv4_fillattr() were modified to take the extra arguments that are the mount point, a flag to indicate that it is a file system root and the mounted on fileno. The mount point argument needs to be busy when nfsvno_fillattr() is called, since the vp argument is not locked. Reviewed by: kib MFC after: 2 weeks
2011-04-14 21:49:52 +00:00
(void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
Fix the experimental NFSv4 server so that it uses VOP_PATHCONF() to determine if a file system supports NFSv4 ACLs. Since VOP_PATHCONF() must be called with a locked vnode, the function is called before nfsvno_fillattr() and the result is passed in as an extra argument. MFC after: 2 weeks
2011-04-14 23:46:15 +00:00
&attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
Add the experimental nfs subtree to the kernel, that includes support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
2009-05-04 15:23:58 +00:00
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);
}
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