/*
- * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
* FreeBSD-Id: nfs_node.c,v 1.22 1997/10/28 14:06:20 bde Exp $
*/
+#include <nfs/nfs_conf.h>
+#if CONFIG_NFS_CLIENT
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/mount_internal.h>
+#include <sys/vnode_internal.h>
#include <sys/vnode.h>
#include <sys/ubc.h>
#include <sys/malloc.h>
#include <sys/fcntl.h>
+#include <sys/time.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs_gss.h>
#include <nfs/nfsmount.h>
-#define NFSNOHASH(fhsum) \
+#define NFSNOHASH(fhsum) \
(&nfsnodehashtbl[(fhsum) & nfsnodehash])
-static LIST_HEAD(nfsnodehashhead, nfsnode) *nfsnodehashtbl;
+static LIST_HEAD(nfsnodehashhead, nfsnode) * nfsnodehashtbl;
static u_long nfsnodehash;
static lck_grp_t *nfs_node_hash_lck_grp;
static lck_grp_t *nfs_data_lck_grp;
lck_mtx_t *nfs_node_hash_mutex;
+#define NFS_NODE_DBG(...) NFS_DBG(NFS_FAC_NODE, 7, ## __VA_ARGS__)
+
/*
* Initialize hash links for nfsnodes
* and build nfsnode free list.
nfs_nhinit_finish(void)
{
lck_mtx_lock(nfs_node_hash_mutex);
- if (!nfsnodehashtbl)
+ if (!nfsnodehashtbl) {
nfsnodehashtbl = hashinit(desiredvnodes, M_NFSNODE, &nfsnodehash);
+ }
lck_mtx_unlock(nfs_node_hash_mutex);
}
int i;
fhsum = 0;
- for (i = 0; i < fhsize; i++)
+ for (i = 0; i < fhsize; i++) {
fhsum += *fhp++;
- return (fhsum);
+ }
+ return fhsum;
}
+
+int nfs_case_insensitive(mount_t);
+
+int
+nfs_case_insensitive(mount_t mp)
+{
+ struct nfsmount *nmp = VFSTONFS(mp);
+ int answer = 0;
+ int skip = 0;
+
+ if (nfs_mount_gone(nmp)) {
+ return 0;
+ }
+
+ if (nmp->nm_vers == NFS_VER2) {
+ /* V2 has no way to know */
+ return 0;
+ }
+
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_vers == NFS_VER3) {
+ if (!(nmp->nm_state & NFSSTA_GOTPATHCONF)) {
+ /* We're holding the node lock so we just return
+ * with answer as case sensitive. Is very rare
+ * for file systems not to be homogenous w.r.t. pathconf
+ */
+ skip = 1;
+ }
+ } else if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_HOMOGENEOUS)) {
+ /* no pathconf info cached */
+ skip = 1;
+ }
+
+ if (!skip && (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_CASE_INSENSITIVE)) {
+ answer = 1;
+ }
+
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ return answer;
+}
+
+
/*
* Look up a vnode/nfsnode by file handle.
* Callers must check for mount points!!
FSDBG_TOP(263, mp, dnp, flags, npp);
/* Check for unmount in progress */
- if (!mp || (mp->mnt_kern_flag & MNTK_FRCUNMOUNT)) {
+ if (!mp || vfs_isforce(mp)) {
*npp = NULL;
error = ENXIO;
FSDBG_BOT(263, mp, dnp, 0xd1e, error);
- return (error);
+ return error;
}
nfsvers = VFSTONFS(mp)->nm_vers;
for (np = nhpp->lh_first; np != 0; np = np->n_hash.le_next) {
mp2 = (np->n_hflag & NHINIT) ? np->n_mount : NFSTOMP(np);
if (mp != mp2 || np->n_fhsize != fhsize ||
- bcmp(fhp, np->n_fhp, fhsize))
+ bcmp(fhp, np->n_fhp, fhsize)) {
continue;
+ }
if (nvap && (nvap->nva_flags & NFS_FFLAG_TRIGGER_REFERRAL) &&
cnp && (cnp->cn_namelen > (fhsize - (int)sizeof(dnp)))) {
/* The name was too long to fit in the file handle. Check it against the node's name. */
int namecmp = 0;
const char *vname = vnode_getname(NFSTOV(np));
if (vname) {
- if (cnp->cn_namelen != (int)strlen(vname))
+ if (cnp->cn_namelen != (int)strlen(vname)) {
namecmp = 1;
- else
+ } else {
namecmp = strncmp(vname, cnp->cn_nameptr, cnp->cn_namelen);
+ }
vnode_putname(vname);
}
- if (namecmp) /* full name didn't match */
+ if (namecmp) { /* full name didn't match */
continue;
+ }
}
FSDBG(263, dnp, np, np->n_flag, 0xcace0000);
/* if the node is locked, sleep on it */
* changed identity, no need to wait.
*/
FSDBG_BOT(263, dnp, *npp, 0xcace0d1e, error);
- return (error);
+ return error;
}
if ((error = nfs_node_lock(np))) {
/* this only fails if the node is now unhashed */
if (flags & NG_NOCREATE) {
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0xcaced1e0, ENOENT);
- return (ENOENT);
+ return ENOENT;
}
goto loop;
}
/* update attributes */
- if (nvap)
+ if (nvap) {
error = nfs_loadattrcache(np, nvap, xidp, 0);
+ }
if (error) {
nfs_node_unlock(np);
vnode_put(vp);
} else {
- if (dnp && cnp && (flags & NG_MAKEENTRY))
+ if (dnp && cnp && (flags & NG_MAKEENTRY)) {
cache_enter(NFSTOV(dnp), vp, cnp);
+ }
+ /*
+ * Update the vnode if the name/and or the parent has
+ * changed. We need to do this so that if getattrlist is
+ * called asking for ATTR_CMN_NAME, that the "most"
+ * correct name is being returned. In addition for
+ * monitored vnodes we need to kick the vnode out of the
+ * name cache. We do this so that if there are hard
+ * links in the same directory the link will not be
+ * found and a lookup will get us here to return the
+ * name of the current link. In addition by removing the
+ * name from the name cache the old name will not be
+ * found after a rename done on another client or the
+ * server. The principle reason to do this is because
+ * Finder is asking for notifications on a directory.
+ * The directory changes, Finder gets notified, reads
+ * the directory (which we have purged) and for each
+ * entry returned calls getattrlist with the name
+ * returned from readdir. gettattrlist has to call
+ * namei/lookup to resolve the name, because its not in
+ * the cache we end up here. We need to update the name
+ * so Finder will get the name it called us with.
+ *
+ * We had an imperfect solution with respect to case
+ * sensitivity. There is a test that is run in
+ * FileBuster that does renames from some name to
+ * another name differing only in case. It then reads
+ * the directory looking for the new name, after it
+ * finds that new name, it ask gettattrlist to verify
+ * that the name is the new name. Usually that works,
+ * but renames generate fsevents and fseventsd will do a
+ * lookup on the name via lstat. Since that test renames
+ * old name to new name back and forth there is a race
+ * that an fsevent will be behind and will access the
+ * file by the old name, on a case insensitive file
+ * system that will work. Problem is if we do a case
+ * sensitive compare, we're going to change the name,
+ * which the test's getattrlist verification step is
+ * going to fail. So we will check the case sensitivity
+ * of the file system and do the appropriate compare. In
+ * a rare instance for non homogeneous file systems
+ * w.r.t. pathconf we will use case sensitive compares.
+ * That could break if the file system is actually case
+ * insensitive.
+ *
+ * Note that V2 does not know the case, so we just
+ * assume case sensitivity.
+ *
+ * This is clearly not perfect due to races, but this is
+ * as good as its going to get. You can defeat the
+ * handling of hard links simply by doing:
+ *
+ * while :; do ls -l > /dev/null; done
+ *
+ * in a terminal window. Even a single ls -l can cause a
+ * race.
+ *
+ * <rant>What we really need is for the caller, that
+ * knows the name being used is valid since it got it
+ * from a readdir to use that name and not ask for the
+ * ATTR_CMN_NAME</rant>
+ */
+ if (dnp && cnp && (vp != NFSTOV(dnp))) {
+ int update_flags = (vnode_ismonitored((NFSTOV(dnp)))) ? VNODE_UPDATE_CACHE : 0;
+ int (*cmp)(const char *s1, const char *s2, size_t n);
+
+ cmp = nfs_case_insensitive(mp) ? strncasecmp : strncmp;
+
+ if (vp->v_name && (size_t)cnp->cn_namelen != strnlen(vp->v_name, MAXPATHLEN)) {
+ update_flags |= VNODE_UPDATE_NAME;
+ }
+ if (vp->v_name && cnp->cn_namelen && (*cmp)(cnp->cn_nameptr, vp->v_name, cnp->cn_namelen)) {
+ update_flags |= VNODE_UPDATE_NAME;
+ }
+ if ((vp->v_name == NULL && cnp->cn_namelen != 0) || (vp->v_name != NULL && cnp->cn_namelen == 0)) {
+ update_flags |= VNODE_UPDATE_NAME;
+ }
+ if (vnode_parent(vp) != NFSTOV(dnp)) {
+ update_flags |= VNODE_UPDATE_PARENT;
+ }
+ if (update_flags) {
+ NFS_NODE_DBG("vnode_update_identity old name %s new name %.*s update flags = %x\n",
+ vp->v_name, cnp->cn_namelen, cnp->cn_nameptr ? cnp->cn_nameptr : "", update_flags);
+ vnode_update_identity(vp, NFSTOV(dnp), cnp->cn_nameptr, cnp->cn_namelen, 0, update_flags);
+ }
+ }
+
*npp = np;
}
FSDBG_BOT(263, dnp, *npp, 0xcace0000, error);
- return(error);
+ return error;
}
FSDBG(263, mp, dnp, npp, 0xaaaaaaaa);
lck_mtx_unlock(nfs_node_hash_mutex);
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0x80000001, ENOENT);
- return (ENOENT);
+ return ENOENT;
}
/*
lck_mtx_unlock(nfs_node_hash_mutex);
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0x80000001, ENOMEM);
- return (ENOMEM);
+ return ENOMEM;
}
bzero(np, sizeof *np);
np->n_hflag |= (NHINIT | NHLOCKED);
/* ugh... need to keep track of ".zfs" directories to workaround server bugs */
if ((nvap->nva_type == VDIR) && cnp && (cnp->cn_namelen == 4) &&
(cnp->cn_nameptr[0] == '.') && (cnp->cn_nameptr[1] == 'z') &&
- (cnp->cn_nameptr[2] == 'f') && (cnp->cn_nameptr[3] == 's'))
+ (cnp->cn_nameptr[2] == 'f') && (cnp->cn_nameptr[3] == 's')) {
np->n_flag |= NISDOTZFS;
- if (dnp && (dnp->n_flag & NISDOTZFS))
+ }
+ if (dnp && (dnp->n_flag & NISDOTZFS)) {
np->n_flag |= NISDOTZFSCHILD;
+ }
if (dnp && cnp && ((cnp->cn_namelen != 2) ||
(cnp->cn_nameptr[0] != '.') || (cnp->cn_nameptr[1] != '.'))) {
vnode_t dvp = NFSTOV(dnp);
if (!vnode_get(dvp)) {
- if (!vnode_ref(dvp))
+ if (!vnode_ref(dvp)) {
np->n_parent = dvp;
+ }
vnode_put(dvp);
}
}
/* setup node's file handle */
if (fhsize > NFS_SMALLFH) {
MALLOC_ZONE(np->n_fhp, u_char *,
- fhsize, M_NFSBIGFH, M_WAITOK);
+ fhsize, M_NFSBIGFH, M_WAITOK);
if (!np->n_fhp) {
lck_mtx_unlock(nfs_node_hash_mutex);
FREE_ZONE(np, sizeof *np, M_NFSNODE);
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0x80000002, ENOMEM);
- return (ENOMEM);
+ return ENOMEM;
}
} else {
np->n_fhp = &np->n_fh[0];
nfs_node_unlock(np);
lck_mtx_lock(nfs_node_hash_mutex);
LIST_REMOVE(np, n_hash);
- np->n_hflag &= ~(NHHASHED|NHINIT|NHLOCKED);
+ np->n_hflag &= ~(NHHASHED | NHINIT | NHLOCKED);
if (np->n_hflag & NHLOCKWANT) {
np->n_hflag &= ~NHLOCKWANT;
wakeup(np);
lck_mtx_destroy(&np->n_lock, nfs_node_lck_grp);
lck_rw_destroy(&np->n_datalock, nfs_data_lck_grp);
lck_mtx_destroy(&np->n_openlock, nfs_open_grp);
- if (np->n_fhsize > NFS_SMALLFH)
+ if (np->n_fhsize > NFS_SMALLFH) {
FREE_ZONE(np->n_fhp, np->n_fhsize, M_NFSBIGFH);
+ }
FREE_ZONE(np, sizeof *np, M_NFSNODE);
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0x80000003, error);
- return (error);
+ return error;
}
NFS_CHANGED_UPDATE(nfsvers, np, nvap);
- if (nvap->nva_type == VDIR)
+ if (nvap->nva_type == VDIR) {
NFS_CHANGED_UPDATE_NC(nfsvers, np, nvap);
+ }
/* now, attempt to get a new vnode */
vfsp.vnfs_mp = mp;
vfsp.vnfs_str = "nfs";
vfsp.vnfs_dvp = dnp ? NFSTOV(dnp) : NULL;
vfsp.vnfs_fsnode = np;
+#if CONFIG_NFS4
if (nfsvers == NFS_VER4) {
#if FIFO
- if (nvap->nva_type == VFIFO)
+ if (nvap->nva_type == VFIFO) {
vfsp.vnfs_vops = fifo_nfsv4nodeop_p;
- else
+ } else
#endif /* FIFO */
- if (nvap->nva_type == VBLK || nvap->nva_type == VCHR)
+ if (nvap->nva_type == VBLK || nvap->nva_type == VCHR) {
vfsp.vnfs_vops = spec_nfsv4nodeop_p;
- else
+ } else {
vfsp.vnfs_vops = nfsv4_vnodeop_p;
- } else {
+ }
+ } else
+#endif /* CONFIG_NFS4 */
+ {
#if FIFO
- if (nvap->nva_type == VFIFO)
+ if (nvap->nva_type == VFIFO) {
vfsp.vnfs_vops = fifo_nfsv2nodeop_p;
- else
+ } else
#endif /* FIFO */
- if (nvap->nva_type == VBLK || nvap->nva_type == VCHR)
+ if (nvap->nva_type == VBLK || nvap->nva_type == VCHR) {
vfsp.vnfs_vops = spec_nfsv2nodeop_p;
- else
+ } else {
vfsp.vnfs_vops = nfsv2_vnodeop_p;
+ }
}
vfsp.vnfs_markroot = (flags & NG_MARKROOT) ? 1 : 0;
vfsp.vnfs_marksystem = 0;
vfsp.vnfs_filesize = nvap->nva_size;
vfsp.vnfs_cnp = cnp;
vfsp.vnfs_flags = VNFS_ADDFSREF;
- if (!dnp || !cnp || !(flags & NG_MAKEENTRY))
+ if (!dnp || !cnp || !(flags & NG_MAKEENTRY)) {
vfsp.vnfs_flags |= VNFS_NOCACHE;
+ }
#if CONFIG_TRIGGERS
- if ((nfsvers >= NFS_VER4) && (nvap->nva_type == VDIR) && (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER)) {
+ if (((nfsvers >= NFS_VER4)
+ )
+ && (nvap->nva_type == VDIR) && (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER)
+ && !(flags & NG_MARKROOT)) {
struct vnode_trigger_param vtp;
bzero(&vtp, sizeof(vtp));
bcopy(&vfsp, &vtp.vnt_params, sizeof(vfsp));
vtp.vnt_resolve_func = nfs_mirror_mount_trigger_resolve;
vtp.vnt_unresolve_func = nfs_mirror_mount_trigger_unresolve;
vtp.vnt_rearm_func = nfs_mirror_mount_trigger_rearm;
- vtp.vnt_flags = VNT_AUTO_REARM;
+ vtp.vnt_flags = VNT_AUTO_REARM | VNT_KERN_RESOLVE;
error = vnode_create(VNCREATE_TRIGGER, VNCREATE_TRIGGER_SIZE, &vtp, &np->n_vnode);
} else
#endif
nfs_node_unlock(np);
lck_mtx_lock(nfs_node_hash_mutex);
LIST_REMOVE(np, n_hash);
- np->n_hflag &= ~(NHHASHED|NHINIT|NHLOCKED);
+ np->n_hflag &= ~(NHHASHED | NHINIT | NHLOCKED);
if (np->n_hflag & NHLOCKWANT) {
np->n_hflag &= ~NHLOCKWANT;
wakeup(np);
lck_mtx_destroy(&np->n_lock, nfs_node_lck_grp);
lck_rw_destroy(&np->n_datalock, nfs_data_lck_grp);
lck_mtx_destroy(&np->n_openlock, nfs_open_grp);
- if (np->n_fhsize > NFS_SMALLFH)
+ if (np->n_fhsize > NFS_SMALLFH) {
FREE_ZONE(np->n_fhp, np->n_fhsize, M_NFSBIGFH);
+ }
FREE_ZONE(np, sizeof *np, M_NFSNODE);
*npp = 0;
FSDBG_BOT(263, dnp, *npp, 0x80000004, error);
- return (error);
+ return error;
}
vp = np->n_vnode;
vnode_settag(vp, VT_NFS);
/* check if anyone's waiting on this node */
lck_mtx_lock(nfs_node_hash_mutex);
- np->n_hflag &= ~(NHINIT|NHLOCKED);
+ np->n_hflag &= ~(NHINIT | NHLOCKED);
if (np->n_hflag & NHLOCKWANT) {
np->n_hflag &= ~NHLOCKWANT;
wakeup(np);
*npp = np;
FSDBG_BOT(263, dnp, vp, *npp, error);
- return (error);
+ return error;
}
int
-nfs_vnop_inactive(ap)
+nfs_vnop_inactive(
struct vnop_inactive_args /* {
- struct vnodeop_desc *a_desc;
- vnode_t a_vp;
- vfs_context_t a_context;
- } */ *ap;
+ * struct vnodeop_desc *a_desc;
+ * vnode_t a_vp;
+ * vfs_context_t a_context;
+ * } */*ap)
{
vnode_t vp = ap->a_vp;
vfs_context_t ctx = ap->a_context;
- nfsnode_t np = VTONFS(ap->a_vp);
+ nfsnode_t np;
struct nfs_sillyrename *nsp;
struct nfs_vattr nvattr;
int unhash, attrerr, busyerror, error, inuse, busied, force;
struct nfs_open_file *nofp;
struct componentname cn;
- struct nfsmount *nmp = NFSTONMP(np);
- mount_t mp = vnode_mount(vp);
+ struct nfsmount *nmp;
+ mount_t mp;
+
+ if (vp == NULL) {
+ panic("nfs_vnop_inactive: vp == NULL");
+ }
+ np = VTONFS(vp);
+ if (np == NULL) {
+ panic("nfs_vnop_inactive: np == NULL");
+ }
+
+ nmp = NFSTONMP(np);
+ mp = vnode_mount(vp);
restart:
- force = (!mp || (mp->mnt_kern_flag & MNTK_FRCUNMOUNT));
+ force = (!mp || vfs_isforce(mp));
error = 0;
inuse = (nfs_mount_state_in_use_start(nmp, NULL) == 0);
/* There shouldn't be any open or lock state at this point */
lck_mtx_lock(&np->n_openlock);
- if (np->n_openrefcnt && !force)
+ if (np->n_openrefcnt && !force) {
+ /*
+ * vnode_rele and vnode_put drop the vnode lock before
+ * calling VNOP_INACTIVE, so there is a race were the
+ * vnode could become active again. Perhaps there are
+ * other places where this can happen, so if we've got
+ * here we need to get out.
+ */
+#ifdef NFS_NODE_DEBUG
NP(np, "nfs_vnop_inactive: still open: %d", np->n_openrefcnt);
+#endif
+ lck_mtx_unlock(&np->n_openlock);
+ return 0;
+ }
+
TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
lck_mtx_lock(&nofp->nof_lock);
if (nofp->nof_flags & NFS_OPEN_FILE_BUSY) {
- if (!force)
+ if (!force) {
NP(np, "nfs_vnop_inactive: open file busy");
+ }
busied = 0;
} else {
nofp->nof_flags |= NFS_OPEN_FILE_BUSY;
}
lck_mtx_unlock(&nofp->nof_lock);
if ((np->n_flag & NREVOKE) || (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
+ }
continue;
}
/*
* node has gone inactive without being open, we need to
* clean up (close) the open done in the create.
*/
+#if CONFIG_NFS4
if ((nofp->nof_flags & NFS_OPEN_FILE_CREATE) && nofp->nof_creator && !force) {
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
lck_mtx_unlock(&np->n_openlock);
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
- if (inuse)
+ }
+ if (inuse) {
nfs_mount_state_in_use_end(nmp, 0);
- if (!nfs4_reopen(nofp, NULL))
+ }
+ if (!nfs4_reopen(nofp, NULL)) {
goto restart;
+ }
}
nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
lck_mtx_unlock(&np->n_openlock);
NP(np, "nfs_vnop_inactive: create close error: %d", error);
nofp->nof_flags |= NFS_OPEN_FILE_CREATE;
}
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
- if (inuse)
+ }
+ if (inuse) {
nfs_mount_state_in_use_end(nmp, error);
+ }
goto restart;
}
+#endif
if (nofp->nof_flags & NFS_OPEN_FILE_NEEDCLOSE) {
/*
* If the file is marked as needing reopen, but this was the only
} else if (!force) {
lck_mtx_unlock(&np->n_openlock);
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
- if (inuse)
+ }
+ if (inuse) {
nfs_mount_state_in_use_end(nmp, 0);
- if (!nfs4_reopen(nofp, NULL))
+ }
+#if CONFIG_NFS4
+ if (!nfs4_reopen(nofp, NULL)) {
goto restart;
+ }
+#endif
}
error = nfs_close(np, nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, ctx);
if (error) {
NP(np, "nfs_vnop_inactive: need close error: %d", error);
nofp->nof_flags |= NFS_OPEN_FILE_NEEDCLOSE;
}
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
- if (inuse)
+ }
+ if (inuse) {
nfs_mount_state_in_use_end(nmp, error);
+ }
goto restart;
}
}
- if (nofp->nof_opencnt && !force)
+ if (nofp->nof_opencnt && !force) {
NP(np, "nfs_vnop_inactive: file still open: %d", nofp->nof_opencnt);
+ }
if (!force && (nofp->nof_access || nofp->nof_deny ||
nofp->nof_mmap_access || nofp->nof_mmap_deny ||
nofp->nof_r || nofp->nof_w || nofp->nof_rw ||
nofp->nof_d_r_dw || nofp->nof_d_w_dw || nofp->nof_d_rw_dw ||
nofp->nof_d_r_drw || nofp->nof_d_w_drw || nofp->nof_d_rw_drw)) {
NP(np, "nfs_vnop_inactive: non-zero access: %d %d %d %d # %u.%u %u.%u %u.%u dw %u.%u %u.%u %u.%u drw %u.%u %u.%u %u.%u",
- nofp->nof_access, nofp->nof_deny,
- nofp->nof_mmap_access, nofp->nof_mmap_deny,
- nofp->nof_r, nofp->nof_d_r,
- nofp->nof_w, nofp->nof_d_w,
- nofp->nof_rw, nofp->nof_d_rw,
- nofp->nof_r_dw, nofp->nof_d_r_dw,
- nofp->nof_w_dw, nofp->nof_d_w_dw,
- nofp->nof_rw_dw, nofp->nof_d_rw_dw,
- nofp->nof_r_drw, nofp->nof_d_r_drw,
- nofp->nof_w_drw, nofp->nof_d_w_drw,
- nofp->nof_rw_drw, nofp->nof_d_rw_drw);
+ nofp->nof_access, nofp->nof_deny,
+ nofp->nof_mmap_access, nofp->nof_mmap_deny,
+ nofp->nof_r, nofp->nof_d_r,
+ nofp->nof_w, nofp->nof_d_w,
+ nofp->nof_rw, nofp->nof_d_rw,
+ nofp->nof_r_dw, nofp->nof_d_r_dw,
+ nofp->nof_w_dw, nofp->nof_d_w_dw,
+ nofp->nof_rw_dw, nofp->nof_d_rw_dw,
+ nofp->nof_r_drw, nofp->nof_d_r_drw,
+ nofp->nof_w_drw, nofp->nof_d_w_drw,
+ nofp->nof_rw_drw, nofp->nof_d_rw_drw);
}
- if (busied)
+ if (busied) {
nfs_open_file_clear_busy(nofp);
+ }
}
lck_mtx_unlock(&np->n_openlock);
- if (inuse && nfs_mount_state_in_use_end(nmp, error))
+ if (inuse && nfs_mount_state_in_use_end(nmp, error)) {
goto restart;
+ }
nfs_node_lock_force(np);
if (vnode_vtype(vp) != VDIR) {
- nsp = np->n_sillyrename;
+ nsp = np->n_sillyrename;
np->n_sillyrename = NULL;
} else {
nsp = NULL;
np->n_flag &= (NMODIFIED);
nfs_node_unlock(np);
FSDBG_BOT(264, vp, np, np->n_flag, 0);
- return (0);
+ return 0;
}
nfs_node_unlock(np);
np->n_flag &= (NMODIFIED);
nfs_node_unlock(np);
- if (!busyerror)
+ if (!busyerror) {
nfs_node_clear_busy2(nsp->nsr_dnp, np);
+ }
if (unhash && vnode_isinuse(vp, 0)) {
/* vnode now inuse after silly remove? */
lck_mtx_unlock(nfs_node_hash_mutex);
/* cleanup sillyrename info */
- if (nsp->nsr_cred != NOCRED)
+ if (nsp->nsr_cred != NOCRED) {
kauth_cred_unref(&nsp->nsr_cred);
+ }
vnode_rele(NFSTOV(nsp->nsr_dnp));
FREE_ZONE(nsp, sizeof(*nsp), M_NFSREQ);
FSDBG_BOT(264, vp, np, np->n_flag, 0);
- return (0);
+ return 0;
}
/*
* Reclaim an nfsnode so that it can be used for other purposes.
*/
int
-nfs_vnop_reclaim(ap)
+nfs_vnop_reclaim(
struct vnop_reclaim_args /* {
- struct vnodeop_desc *a_desc;
- vnode_t a_vp;
- vfs_context_t a_context;
- } */ *ap;
+ * struct vnodeop_desc *a_desc;
+ * vnode_t a_vp;
+ * vfs_context_t a_context;
+ * } */*ap)
{
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
- vfs_context_t ctx = ap->a_context;
struct nfs_open_file *nofp, *nextnofp;
struct nfs_file_lock *nflp, *nextnflp;
struct nfs_lock_owner *nlop, *nextnlop;
int force;
FSDBG_TOP(265, vp, np, np->n_flag, 0);
- force = (!mp || (mp->mnt_kern_flag & MNTK_FRCUNMOUNT));
+ force = (!mp || vfs_isforce(mp) || nfs_mount_gone(nmp));
+
/* There shouldn't be any open or lock state at this point */
lck_mtx_lock(&np->n_openlock);
+#if CONFIG_NFS4
if (nmp && (nmp->nm_vers >= NFS_VER4)) {
/* need to drop a delegation */
if (np->n_dreturn.tqe_next != NFSNOLIST) {
/* try to return the delegation */
np->n_openflags &= ~N_DELEG_MASK;
nfs4_delegreturn_rpc(nmp, np->n_fhp, np->n_fhsize, &np->n_dstateid,
- R_RECOVER, vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ R_RECOVER, vfs_context_thread(ctx), vfs_context_ucred(ctx));
}
if (np->n_attrdirfh) {
FREE(np->n_attrdirfh, M_TEMP);
np->n_attrdirfh = NULL;
}
}
+#endif
/* clean up file locks */
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (!(nflp->nfl_flags & NFS_FILE_LOCK_DEAD) && !force) {
NP(np, "nfs_vnop_reclaim: lock 0x%llx 0x%llx 0x%x (bc %d)",
- nflp->nfl_start, nflp->nfl_end, nflp->nfl_flags, nflp->nfl_blockcnt);
+ nflp->nfl_start, nflp->nfl_end, nflp->nfl_flags, nflp->nfl_blockcnt);
}
- if (!(nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))) {
+ if (!(nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED | NFS_FILE_LOCK_DEAD))) {
/* try sending an unlock RPC if it wasn't delegated */
- if (!(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED) && !force)
+ if (!(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED) && !force) {
nmp->nm_funcs->nf_unlock_rpc(np, nflp->nfl_owner, F_WRLCK, nflp->nfl_start, nflp->nfl_end, R_RECOVER,
- NULL, nflp->nfl_owner->nlo_open_owner->noo_cred);
+ NULL, nflp->nfl_owner->nlo_open_owner->noo_cred);
+ }
lck_mtx_lock(&nflp->nfl_owner->nlo_lock);
TAILQ_REMOVE(&nflp->nfl_owner->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nflp->nfl_owner->nlo_lock);
}
/* clean up lock owners */
TAILQ_FOREACH_SAFE(nlop, &np->n_lock_owners, nlo_link, nextnlop) {
- if (!TAILQ_EMPTY(&nlop->nlo_locks) && !force)
+ if (!TAILQ_EMPTY(&nlop->nlo_locks) && !force) {
NP(np, "nfs_vnop_reclaim: lock owner with locks");
+ }
TAILQ_REMOVE(&np->n_lock_owners, nlop, nlo_link);
nfs_lock_owner_destroy(nlop);
}
/* clean up open state */
- if (np->n_openrefcnt && !force)
+ if (np->n_openrefcnt && !force) {
NP(np, "nfs_vnop_reclaim: still open: %d", np->n_openrefcnt);
+ }
TAILQ_FOREACH_SAFE(nofp, &np->n_opens, nof_link, nextnofp) {
- if (nofp->nof_flags & NFS_OPEN_FILE_BUSY)
+ if (nofp->nof_flags & NFS_OPEN_FILE_BUSY) {
NP(np, "nfs_vnop_reclaim: open file busy");
+ }
if (!(np->n_flag & NREVOKE) && !(nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
- if (nofp->nof_opencnt && !force)
+ if (nofp->nof_opencnt && !force) {
NP(np, "nfs_vnop_reclaim: file still open: %d", nofp->nof_opencnt);
+ }
if (!force && (nofp->nof_access || nofp->nof_deny ||
nofp->nof_mmap_access || nofp->nof_mmap_deny ||
nofp->nof_r || nofp->nof_w || nofp->nof_rw ||
nofp->nof_d_r_dw || nofp->nof_d_w_dw || nofp->nof_d_rw_dw ||
nofp->nof_d_r_drw || nofp->nof_d_w_drw || nofp->nof_d_rw_drw)) {
NP(np, "nfs_vnop_reclaim: non-zero access: %d %d %d %d # %u.%u %u.%u %u.%u dw %u.%u %u.%u %u.%u drw %u.%u %u.%u %u.%u",
- nofp->nof_access, nofp->nof_deny,
- nofp->nof_mmap_access, nofp->nof_mmap_deny,
- nofp->nof_r, nofp->nof_d_r,
- nofp->nof_w, nofp->nof_d_w,
- nofp->nof_rw, nofp->nof_d_rw,
- nofp->nof_r_dw, nofp->nof_d_r_dw,
- nofp->nof_w_dw, nofp->nof_d_w_dw,
- nofp->nof_rw_dw, nofp->nof_d_rw_dw,
- nofp->nof_r_drw, nofp->nof_d_r_drw,
- nofp->nof_w_drw, nofp->nof_d_w_drw,
- nofp->nof_rw_drw, nofp->nof_d_rw_drw);
+ nofp->nof_access, nofp->nof_deny,
+ nofp->nof_mmap_access, nofp->nof_mmap_deny,
+ nofp->nof_r, nofp->nof_d_r,
+ nofp->nof_w, nofp->nof_d_w,
+ nofp->nof_rw, nofp->nof_d_rw,
+ nofp->nof_r_dw, nofp->nof_d_r_dw,
+ nofp->nof_w_dw, nofp->nof_d_w_dw,
+ nofp->nof_rw_dw, nofp->nof_d_rw_dw,
+ nofp->nof_r_drw, nofp->nof_d_r_drw,
+ nofp->nof_w_drw, nofp->nof_d_w_drw,
+ nofp->nof_rw_drw, nofp->nof_d_rw_drw);
+#if CONFIG_NFS4
/* try sending a close RPC if it wasn't delegated */
if (nofp->nof_r || nofp->nof_w || nofp->nof_rw ||
nofp->nof_r_dw || nofp->nof_w_dw || nofp->nof_rw_dw ||
- nofp->nof_r_drw || nofp->nof_w_drw || nofp->nof_rw_drw)
+ nofp->nof_r_drw || nofp->nof_w_drw || nofp->nof_rw_drw) {
nfs4_close_rpc(np, nofp, NULL, nofp->nof_owner->noo_cred, R_RECOVER);
+ }
+#endif
}
}
TAILQ_REMOVE(&np->n_opens, nofp, nof_link);
/* then remove this node from the monitored node list. */
lck_mtx_lock(&nmp->nm_lock);
while (np->n_mflag & NMMONSCANINPROG) {
- struct timespec ts = { 1, 0 };
+ struct timespec ts = { .tv_sec = 1, .tv_nsec = 0 };
np->n_mflag |= NMMONSCANWANT;
- msleep(&np->n_mflag, &nmp->nm_lock, PZERO-1, "nfswaitmonscan", &ts);
+ msleep(&np->n_mflag, &nmp->nm_lock, PZERO - 1, "nfswaitmonscan", &ts);
}
if (np->n_monlink.le_next != NFSNOLIST) {
LIST_REMOVE(np, n_monlink);
}
lck_mtx_lock(nfs_buf_mutex);
- if (!force && (!LIST_EMPTY(&np->n_dirtyblkhd) || !LIST_EMPTY(&np->n_cleanblkhd)))
+ if (!force && (!LIST_EMPTY(&np->n_dirtyblkhd) || !LIST_EMPTY(&np->n_cleanblkhd))) {
NP(np, "nfs_reclaim: dropping %s buffers", (!LIST_EMPTY(&np->n_dirtyblkhd) ? "dirty" : "clean"));
+ }
lck_mtx_unlock(nfs_buf_mutex);
nfs_vinvalbuf(vp, V_IGNORE_WRITEERR, ap->a_context, 0);
lck_mtx_lock(nfs_node_hash_mutex);
if ((vnode_vtype(vp) != VDIR) && np->n_sillyrename) {
- if (!force)
+ if (!force) {
NP(np, "nfs_reclaim: leaving unlinked file %s", np->n_sillyrename->nsr_name);
- if (np->n_sillyrename->nsr_cred != NOCRED)
+ }
+ if (np->n_sillyrename->nsr_cred != NOCRED) {
kauth_cred_unref(&np->n_sillyrename->nsr_cred);
+ }
vnode_rele(NFSTOV(np->n_sillyrename->nsr_dnp));
FREE_ZONE(np->n_sillyrename, sizeof(*np->n_sillyrename), M_NFSREQ);
}
* structures that might be associated with this nfs node.
*/
nfs_node_lock_force(np);
- if ((vnode_vtype(vp) == VDIR) && np->n_cookiecache)
+ if ((vnode_vtype(vp) == VDIR) && np->n_cookiecache) {
FREE_ZONE(np->n_cookiecache, sizeof(struct nfsdmap), M_NFSDIROFF);
- if (np->n_fhsize > NFS_SMALLFH)
+ }
+ if (np->n_fhsize > NFS_SMALLFH) {
FREE_ZONE(np->n_fhp, np->n_fhsize, M_NFSBIGFH);
- if (np->n_vattr.nva_acl)
+ }
+ if (np->n_vattr.nva_acl) {
kauth_acl_free(np->n_vattr.nva_acl);
+ }
nfs_node_unlock(np);
vnode_clearfsnode(vp);
FSDBG_BOT(265, vp, np, np->n_flag, 0xd1ed1e);
FREE_ZONE(np, sizeof(struct nfsnode), M_NFSNODE);
- return (0);
+ return 0;
}
/*
if (!force && !(np->n_hflag && NHHASHED)) {
FSDBG_BOT(268, np, 0xdead, 0, 0);
lck_mtx_unlock(&np->n_lock);
- return (ENOENT);
+ return ENOENT;
}
FSDBG_BOT(268, np, force, 0, 0);
- return (0);
+ return 0;
}
int
first = (np1 > np2) ? np1 : np2;
second = (np1 > np2) ? np2 : np1;
- if ((error = nfs_node_lock(first)))
- return (error);
- if (np1 == np2)
- return (error);
- if ((error = nfs_node_lock(second)))
+ if ((error = nfs_node_lock(first))) {
+ return error;
+ }
+ if (np1 == np2) {
+ return error;
+ }
+ if ((error = nfs_node_lock(second))) {
nfs_node_unlock(first);
- return (error);
+ }
+ return error;
}
void
nfs_node_unlock2(nfsnode_t np1, nfsnode_t np2)
{
nfs_node_unlock(np1);
- if (np1 != np2)
+ if (np1 != np2) {
nfs_node_unlock(np2);
+ }
}
/*
int
nfs_node_set_busy(nfsnode_t np, thread_t thd)
{
- struct timespec ts = { 2, 0 };
+ struct timespec ts = { .tv_sec = 2, .tv_nsec = 0 };
int error;
- if ((error = nfs_node_lock(np)))
- return (error);
+ if ((error = nfs_node_lock(np))) {
+ return error;
+ }
while (ISSET(np->n_flag, NBUSY)) {
SET(np->n_flag, NBUSYWANT);
- msleep(np, &np->n_lock, PZERO-1, "nfsbusywant", &ts);
- if ((error = nfs_sigintr(NFSTONMP(np), NULL, thd, 0)))
+ msleep(np, &np->n_lock, PZERO - 1, "nfsbusywant", &ts);
+ if ((error = nfs_sigintr(NFSTONMP(np), NULL, thd, 0))) {
break;
+ }
}
- if (!error)
+ if (!error) {
SET(np->n_flag, NBUSY);
+ }
nfs_node_unlock(np);
- return (error);
+ return error;
}
void
nfs_node_lock_force(np);
wanted = ISSET(np->n_flag, NBUSYWANT);
- CLR(np->n_flag, NBUSY|NBUSYWANT);
+ CLR(np->n_flag, NBUSY | NBUSYWANT);
nfs_node_unlock(np);
- if (wanted)
+ if (wanted) {
wakeup(np);
+ }
}
int
first = (np1 > np2) ? np1 : np2;
second = (np1 > np2) ? np2 : np1;
- if ((error = nfs_node_set_busy(first, thd)))
- return (error);
- if (np1 == np2)
- return (error);
- if ((error = nfs_node_set_busy(second, thd)))
+ if ((error = nfs_node_set_busy(first, thd))) {
+ return error;
+ }
+ if (np1 == np2) {
+ return error;
+ }
+ if ((error = nfs_node_set_busy(second, thd))) {
nfs_node_clear_busy(first);
- return (error);
+ }
+ return error;
}
void
nfs_node_clear_busy2(nfsnode_t np1, nfsnode_t np2)
{
nfs_node_clear_busy(np1);
- if (np1 != np2)
+ if (np1 != np2) {
nfs_node_clear_busy(np2);
+ }
}
/* helper function to sort four nodes in reverse address order (no dupes) */
nb[0] = (np3 > np4) ? np3 : np4;
nb[1] = (np3 > np4) ? np4 : np3;
for (a = b = i = lcnt = 0; i < 4; i++) {
- if (a >= 2)
+ if (a >= 2) {
list[lcnt] = nb[b++];
- else if ((b >= 2) || (na[a] >= nb[b]))
+ } else if ((b >= 2) || (na[a] >= nb[b])) {
list[lcnt] = na[a++];
- else
+ } else {
list[lcnt] = nb[b++];
- if ((lcnt <= 0) || (list[lcnt] != list[lcnt-1]))
+ }
+ if ((lcnt <= 0) || (list[lcnt] != list[lcnt - 1])) {
lcnt++; /* omit dups */
+ }
}
- if (list[lcnt-1] == NULL)
+ if (list[lcnt - 1] == NULL) {
lcnt--;
+ }
*lcntp = lcnt;
}
nfs_node_sort4(np1, np2, np3, np4, list, &lcnt);
/* Now we can lock using list[0 - lcnt-1] */
- for (i = 0; i < lcnt; ++i)
+ for (i = 0; i < lcnt; ++i) {
if ((error = nfs_node_set_busy(list[i], thd))) {
/* Drop any locks we acquired. */
- while (--i >= 0)
+ while (--i >= 0) {
nfs_node_clear_busy(list[i]);
- return (error);
+ }
+ return error;
}
- return (0);
+ }
+ return 0;
}
void
int lcnt;
nfs_node_sort4(np1, np2, np3, np4, list, &lcnt);
- while (--lcnt >= 0)
+ while (--lcnt >= 0) {
nfs_node_clear_busy(list[lcnt]);
+ }
}
/*
{
FSDBG_TOP(270, np, locktype, np->n_datalockowner, 0);
if (locktype == NFS_DATA_LOCK_SHARED) {
- if (updatesize && ISSET(np->n_flag, NUPDATESIZE))
+ if (updatesize && ISSET(np->n_flag, NUPDATESIZE)) {
nfs_data_update_size(np, 0);
+ }
lck_rw_lock_shared(&np->n_datalock);
} else {
lck_rw_lock_exclusive(&np->n_datalock);
np->n_datalockowner = current_thread();
- if (updatesize && ISSET(np->n_flag, NUPDATESIZE))
+ if (updatesize && ISSET(np->n_flag, NUPDATESIZE)) {
nfs_data_update_size(np, 1);
+ }
}
FSDBG_BOT(270, np, locktype, np->n_datalockowner, 0);
}
{
int mine = (np->n_datalockowner == current_thread());
FSDBG_TOP(271, np, np->n_datalockowner, current_thread(), 0);
- if (updatesize && mine && ISSET(np->n_flag, NUPDATESIZE))
+ if (updatesize && mine && ISSET(np->n_flag, NUPDATESIZE)) {
nfs_data_update_size(np, 1);
+ }
np->n_datalockowner = NULL;
lck_rw_done(&np->n_datalock);
- if (updatesize && !mine && ISSET(np->n_flag, NUPDATESIZE))
+ if (updatesize && !mine && ISSET(np->n_flag, NUPDATESIZE)) {
nfs_data_update_size(np, 0);
+ }
FSDBG_BOT(271, np, np->n_datalockowner, current_thread(), 0);
}
}
error = nfs_node_lock(np);
if (error || !ISSET(np->n_flag, NUPDATESIZE)) {
- if (!error)
+ if (!error) {
nfs_node_unlock(np);
+ }
FSDBG_BOT(272, np, np->n_flag, np->n_size, np->n_newsize);
return;
}
FSDBG_BOT(272, np, np->n_flag, np->n_size, np->n_newsize);
}
+#define DODEBUG 1
+
+int
+nfs_mount_is_dirty(mount_t mp)
+{
+ u_long i;
+ nfsnode_t np;
+#ifdef DODEBUG
+ struct timeval now, then, diff;
+ u_long ncnt = 0;
+ microuptime(&now);
+#endif
+ lck_mtx_lock(nfs_node_hash_mutex);
+ for (i = 0; i <= nfsnodehash; i++) {
+ LIST_FOREACH(np, &nfsnodehashtbl[i], n_hash) {
+#ifdef DODEBUG
+ ncnt++;
+#endif
+ if (np->n_mount == mp && !LIST_EMPTY(&np->n_dirtyblkhd)) {
+ goto out;
+ }
+ }
+ }
+out:
+ lck_mtx_unlock(nfs_node_hash_mutex);
+#ifdef DODEBUG
+ microuptime(&then);
+ timersub(&then, &now, &diff);
+
+ NFS_DBG(NFS_FAC_SOCK, 7, "mount_is_dirty for %s took %lld mics for %ld slots and %ld nodes return %d\n",
+ vfs_statfs(mp)->f_mntfromname, (uint64_t)diff.tv_sec * 1000000LL + diff.tv_usec, i, ncnt, (i <= nfsnodehash));
+#endif
+
+ return i <= nfsnodehash;
+}
+
+#endif /* CONFIG_NFS_CLIENT */
projects / apple / xnu.git / blobdiff