/*
* Lock a directory entry. A dirlock on <dzp, name> protects that name
* in dzp's directory zap object. As long as you hold a dirlock, you can
* assume two things: (1) dzp cannot be reaped, and (2) no other thread
* can change the zap entry for (i.e. link or unlink) this name.
*
* Input arguments:
* dzp - znode for directory
* name - name of entry to lock
* flag - ZNEW: if the entry already exists, fail with EEXIST.
* ZEXISTS: if the entry does not exist, fail with ENOENT.
* ZSHARED: allow concurrent access with other ZSHARED callers.
* ZXATTR: we want dzp's xattr directory
* ZCILOOK: On a mixed sensitivity file system,
* this lookup should be case-insensitive.
* ZCIEXACT: On a purely case-insensitive file system,
* this lookup should be case-sensitive.
* ZRENAMING: we are locking for renaming, force narrow locks
* ZHAVELOCK: Don't grab the z_name_lock for this call. The
* current thread already holds it.
*
* Output arguments:
* zpp - pointer to the znode for the entry (NULL if there isn't one)
* dlpp - pointer to the dirlock for this entry (NULL on error)
* direntflags - (case-insensitive lookup only)
* flags if multiple case-sensitive matches exist in directory
* realpnp - (case-insensitive lookup only)
* actual name matched within the directory
*
* Return value: 0 on success or errno on failure.
*
* NOTE: Always checks for, and rejects, '.' and '..'.
* NOTE: For case-insensitive file systems we take wide locks (see below),
* but return znode pointers to a single match.
*/
int
zfs_dirent_lock(zfs_dirlock_t **dlpp, znode_t *dzp, char *name, znode_t **zpp,
int flag, int *direntflags, pathname_t *realpnp)
{
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zfs_dirlock_t *dl;
boolean_t update;
boolean_t exact;
uint64_t zoid;
vnode_t *vp = NULL;
int error = 0;
int cmpflags;
*zpp = NULL;
*dlpp = NULL;
/*
* Verify that we are not trying to lock '.', '..', or '.zfs'
*/
if ((name[0] == '.' &&
(name[1] == '\0' || (name[1] == '.' && name[2] == '\0'))) ||
(zfs_has_ctldir(dzp) && strcmp(name, ZFS_CTLDIR_NAME) == 0))
return (EEXIST);
/*
* Case sensitivity and normalization preferences are set when
* the file system is created. These are stored in the
* zfsvfs->z_case and zfsvfs->z_norm fields. These choices
* affect what vnodes can be cached in the DNLC, how we
* perform zap lookups, and the "width" of our dirlocks.
*
* A normal dirlock locks a single name. Note that with
* normalization a name can be composed multiple ways, but
* when normalized, these names all compare equal. A wide
* dirlock locks multiple names. We need these when the file
* system is supporting mixed-mode access. It is sometimes
* necessary to lock all case permutations of file name at
* once so that simultaneous case-insensitive/case-sensitive
* behaves as rationally as possible.
*/
/*
* Decide if exact matches should be requested when performing
* a zap lookup on file systems supporting case-insensitive
* access.
*/
exact =
((zfsvfs->z_case == ZFS_CASE_INSENSITIVE) && (flag & ZCIEXACT)) ||
((zfsvfs->z_case == ZFS_CASE_MIXED) && !(flag & ZCILOOK));
/*
* Only look in or update the DNLC if we are looking for the
* name on a file system that does not require normalization
* or case folding. We can also look there if we happen to be
* on a non-normalizing, mixed sensitivity file system IF we
* are looking for the exact name.
*
* Maybe can add TO-UPPERed version of name to dnlc in ci-only
* case for performance improvement?
*/
update = !zfsvfs->z_norm ||
((zfsvfs->z_case == ZFS_CASE_MIXED) &&
!(zfsvfs->z_norm & ~U8_TEXTPREP_TOUPPER) && !(flag & ZCILOOK));
/*
* ZRENAMING indicates we are in a situation where we should
* take narrow locks regardless of the file system's
* preferences for normalizing and case folding. This will
* prevent us deadlocking trying to grab the same wide lock
* twice if the two names happen to be case-insensitive
* matches.
*/
if (flag & ZRENAMING)
cmpflags = 0;
else
cmpflags = zfsvfs->z_norm;
/*
* Wait until there are no locks on this name.
*
* Don't grab the the lock if it is already held. However, cannot
* have both ZSHARED and ZHAVELOCK together.
*/
ASSERT(!(flag & ZSHARED) || !(flag & ZHAVELOCK));
if (!(flag & ZHAVELOCK))
rw_enter(&dzp->z_name_lock, RW_READER);
mutex_enter(&dzp->z_lock);
for (;;) {
if (dzp->z_unlinked) {
mutex_exit(&dzp->z_lock);
if (!(flag & ZHAVELOCK))
rw_exit(&dzp->z_name_lock);
return (ENOENT);
}
for (dl = dzp->z_dirlocks; dl != NULL; dl = dl->dl_next) {
if ((u8_strcmp(name, dl->dl_name, 0, cmpflags,
U8_UNICODE_LATEST, &error) == 0) || error != 0)
break;
}
if (error != 0) {
mutex_exit(&dzp->z_lock);
if (!(flag & ZHAVELOCK))
rw_exit(&dzp->z_name_lock);
return (ENOENT);
}
if (dl == NULL) {
/*
* Allocate a new dirlock and add it to the list.
*/
dl = kmem_alloc(sizeof (zfs_dirlock_t), KM_SLEEP);
cv_init(&dl->dl_cv, NULL, CV_DEFAULT, NULL);
dl->dl_name = name;
dl->dl_sharecnt = 0;
dl->dl_namelock = 0;
dl->dl_namesize = 0;
dl->dl_dzp = dzp;
dl->dl_next = dzp->z_dirlocks;
dzp->z_dirlocks = dl;
break;
}
if ((flag & ZSHARED) && dl->dl_sharecnt != 0)
break;
cv_wait(&dl->dl_cv, &dzp->z_lock);
}
/*
* If the z_name_lock was NOT held for this dirlock record it.
*/
if (flag & ZHAVELOCK)
dl->dl_namelock = 1;
if ((flag & ZSHARED) && ++dl->dl_sharecnt > 1 && dl->dl_namesize == 0) {
/*
* We're the second shared reference to dl. Make a copy of
* dl_name in case the first thread goes away before we do.
* Note that we initialize the new name before storing its
* pointer into dl_name, because the first thread may load
* dl->dl_name at any time. He'll either see the old value,
* which is his, or the new shared copy; either is OK.
*/
dl->dl_namesize = strlen(dl->dl_name) + 1;
name = kmem_alloc(dl->dl_namesize, KM_SLEEP);
bcopy(dl->dl_name, name, dl->dl_namesize);
dl->dl_name = name;
}
mutex_exit(&dzp->z_lock);
/*
* We have a dirlock on the name. (Note that it is the dirlock,
* not the dzp's z_lock, that protects the name in the zap object.)
* See if there's an object by this name; if so, put a hold on it.
*/
if (flag & ZXATTR) {
error = sa_lookup(dzp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), &zoid,
sizeof (zoid));
if (error == 0)
error = (zoid == 0 ? ENOENT : 0);
} else {
if (update)
vp = dnlc_lookup(ZTOV(dzp), name);
if (vp == DNLC_NO_VNODE) {
VN_RELE(vp);
error = ENOENT;
} else if (vp) {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
VN_RELE(vp);
return (EEXIST);
}
*dlpp = dl;
*zpp = VTOZ(vp);
return (0);
} else {
error = zfs_match_find(zfsvfs, dzp, name, exact,
update, direntflags, realpnp, &zoid);
}
}
if (error) {
if (error != ENOENT || (flag & ZEXISTS)) {
zfs_dirent_unlock(dl);
return (error);
}
} else {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
return (EEXIST);
}
error = zfs_zget(zfsvfs, zoid, zpp);
if (error) {
zfs_dirent_unlock(dl);
return (error);
}
if (!(flag & ZXATTR) && update)
dnlc_update(ZTOV(dzp), name, ZTOV(*zpp));
}
*dlpp = dl;
return (0);
}
zfs_dirent_lock(zfs_dirlock_t **dlpp, znode_t *dzp, char *name, znode_t **zpp,
int flag)
#endif
{
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zfs_dirlock_t *dl;
uint64_t zoid;
int error;
vnode_t *vp;
#ifdef __APPLE__
char *name;
u_int8_t *nfc_name = NULL; /* NFC form of name */
int nfc_namesize = 0;
#endif
*zpp = NULL;
*dlpp = NULL;
#ifdef __APPLE__
/* Note: cnp will be NULL for ZXATTR case */
name = cnp ? cnp->cn_nameptr : "";
if (cnp)
ASSERT(name[cnp->cn_namelen] == '\0');
#endif
/*
* Verify that we are not trying to lock '.', '..', or '.zfs'
*/
if ((name[0] == '.') &&
((name[1] == '\0') || ((name[1] == '.') && (name[2] == '\0'))) ||
zfs_has_ctldir(dzp) && strcmp(name, ZFS_CTLDIR_NAME) == 0)
return (EEXIST);
#ifdef __APPLE__
/*
* Mac OS X: store non-ascii names in UTF-8 NFC (pre-composed) on disk.
*
* The NFC name ptr is stored in dl->dl_name (allocated here)
* and its freed by zfs_dirent_unlock (since dl_namesize != 0).
*
* Since NFC size will not expand, we can allocate the same sized buffer.
*/
if (!is_ascii_str(name)) {
size_t outlen;
nfc_namesize = strlen(name) + 1;
nfc_name = kmem_alloc(nfc_namesize, KM_SLEEP);
if (utf8_normalizestr((const u_int8_t *)name, nfc_namesize, nfc_name,
&outlen, nfc_namesize, UTF_PRECOMPOSED) == 0) {
/* Normalization succeeded, switch to NFC name. */
name = (char *)nfc_name;
} else {
/* Normalization failed, just use input name as-is. */
kmem_free(nfc_name, nfc_namesize);
nfc_name = NULL;
}
}
#endif
/*
* Wait until there are no locks on this name.
*/
rw_enter(&dzp->z_name_lock, RW_READER);
mutex_enter(&dzp->z_lock);
for (;;) {
if (dzp->z_unlinked) {
mutex_exit(&dzp->z_lock);
rw_exit(&dzp->z_name_lock);
#ifdef __APPLE__
/* Release any unused NFC name before returning */
if (nfc_name) {
kmem_free(nfc_name, nfc_namesize);
}
#endif
return (ENOENT);
}
for (dl = dzp->z_dirlocks; dl != NULL; dl = dl->dl_next)
if (strcmp(name, dl->dl_name) == 0)
break;
if (dl == NULL) {
/*
* Allocate a new dirlock and add it to the list.
*/
dl = kmem_alloc(sizeof (zfs_dirlock_t), KM_SLEEP);
cv_init(&dl->dl_cv, NULL, CV_DEFAULT, NULL);
dl->dl_name = name;
dl->dl_sharecnt = 0;
dl->dl_namesize = 0;
dl->dl_dzp = dzp;
dl->dl_next = dzp->z_dirlocks;
dzp->z_dirlocks = dl;
#ifdef __APPLE__
/*
* Keep the NFC name around in dir lock by tagging it
* (setting nfc_namesize).
*/
if (nfc_name) {
dl->dl_namesize = nfc_namesize;
nfc_name = NULL; /* its now part of the dir lock */
}
#endif
break;
}
if ((flag & ZSHARED) && dl->dl_sharecnt != 0)
break;
cv_wait(&dl->dl_cv, &dzp->z_lock);
dl=NULL;
}
#ifdef __APPLE__
/*
* Release any unused NFC name (ie if we found a pre-existing lock entry)
*/
if (nfc_name) {
kmem_free(nfc_name, nfc_namesize);
nfc_name = NULL;
}
#endif
if ((flag & ZSHARED) && ++dl->dl_sharecnt > 1 && dl->dl_namesize == 0) {
/*
* We're the second shared reference to dl. Make a copy of
* dl_name in case the first thread goes away before we do.
* Note that we initialize the new name before storing its
* pointer into dl_name, because the first thread may load
* dl->dl_name at any time. He'll either see the old value,
* which is his, or the new shared copy; either is OK.
*/
dl->dl_namesize = strlen(dl->dl_name) + 1;
name = kmem_alloc(dl->dl_namesize, KM_SLEEP);
bcopy(dl->dl_name, name, dl->dl_namesize);
dl->dl_name = name;
}
mutex_exit(&dzp->z_lock);
/*
* We have a dirlock on the name. (Note that it is the dirlock,
* not the dzp's z_lock, that protects the name in the zap object.)
* See if there's an object by this name; if so, put a hold on it.
*/
if (flag & ZXATTR) {
error = sa_lookup(dzp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), &zoid,
sizeof (zoid));
if (error == 0)
error = (zoid == 0 ? ENOENT : 0);
} else {
#ifdef __APPLE__
/*
* Lookup an entry in the vnode name cache
*
* If the lookup succeeds, the vnode is returned in *vpp,
* and a status of -1 is returned.
*
* If the lookup determines that the name does not exist
* (negative caching), a status of ENOENT is returned.
*
* If the lookup fails, a status of zero is returned.
*/
switch ( cache_lookup(ZTOV(dzp), &vp, cnp) ) {
case -1:
break;
case ENOENT:
vp = DNLC_NO_VNODE;
break;
default:
vp = NULLVP;
}
#else
vp = dnlc_lookup(ZTOV(dzp), name);
#endif /* __APPLE__ */
if (vp == DNLC_NO_VNODE) {
VN_RELE(vp);
error = ENOENT;
} else if (vp) {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
VN_RELE(vp);
return (EEXIST);
}
*dlpp = dl;
*zpp = VTOZ(vp);
return (0);
} else {
error = zap_lookup(zfsvfs->z_os, dzp->z_id, name,
8, 1, &zoid);
zoid = ZFS_DIRENT_OBJ(zoid);
if (error == ENOENT)
#ifdef __APPLE__
/*
* Add a negative entry into the VFS name cache
*/
if ((flag & ZNEW) == 0 &&
(dzp->z_pflags & ZFS_XATTR) == 0 &&
(cnp) &&
(cnp->cn_flags & MAKEENTRY) &&
(cnp->cn_nameiop != CREATE) &&
(cnp->cn_nameiop != RENAME)) {
cache_enter(ZTOV(dzp), NULLVP, cnp);
}
#else
dnlc_update(ZTOV(dzp), name, DNLC_NO_VNODE);
#endif /* __APPLE__ */
}
}
if (error) {
if (error != ENOENT || (flag & ZEXISTS)) {
zfs_dirent_unlock(dl);
return (error);
}
} else {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
return (EEXIST);
}
//error = zfs_zget_sans_vnode(zfsvfs, zoid, zpp);
error = zfs_zget(zfsvfs, zoid, zpp);
if (error) {
zfs_dirent_unlock(dl);
return (error);
} else {
// Should this be here?
//printf("zfs_dir attach 1\n");
//zfs_attach_vnode(*zpp);
}
if (!(flag & ZXATTR))
#ifdef __APPLE__
if (cnp && cnp->cn_flags & MAKEENTRY)
cache_enter(ZTOV(dzp), ZTOV(*zpp), cnp);
#else
dnlc_update(ZTOV(dzp), name, ZTOV(*zpp));
#endif /* __APPLE__ */
}
*dlpp = dl;
return (0);
}
/*
* Lock a directory entry. A dirlock on <dzp, name> protects that name
* in dzp's directory zap object. As long as you hold a dirlock, you can
* assume two things: (1) dzp cannot be reaped, and (2) no other thread
* can change the zap entry for (i.e. link or unlink) this name.
*
* Input arguments:
* dzp - znode for directory
* name - name of entry to lock
* flag - ZNEW: if the entry already exists, fail with EEXIST.
* ZEXISTS: if the entry does not exist, fail with ENOENT.
* ZSHARED: allow concurrent access with other ZSHARED callers.
* ZXATTR: we want dzp's xattr directory
*
* Output arguments:
* zpp - pointer to the znode for the entry (NULL if there isn't one)
* dlpp - pointer to the dirlock for this entry (NULL on error)
*
* Return value: 0 on success or errno on failure.
*
* NOTE: Always checks for, and rejects, '.' and '..'.
*/
int
zfs_dirent_lock(zfs_dirlock_t **dlpp, znode_t *dzp, char *name, znode_t **zpp,
int flag)
{
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zfs_dirlock_t *dl;
uint64_t zoid;
int error;
vnode_t *vp;
*zpp = NULL;
*dlpp = NULL;
/*
* Verify that we are not trying to lock '.', '..', or '.zfs'
*/
if (name[0] == '.' &&
(name[1] == '\0' || (name[1] == '.' && name[2] == '\0')) ||
zfs_has_ctldir(dzp) && strcmp(name, ZFS_CTLDIR_NAME) == 0)
return (EEXIST);
/*
* Wait until there are no locks on this name.
*/
mutex_enter(&dzp->z_lock);
for (;;) {
if (dzp->z_reap) {
mutex_exit(&dzp->z_lock);
return (ENOENT);
}
for (dl = dzp->z_dirlocks; dl != NULL; dl = dl->dl_next)
if (strcmp(name, dl->dl_name) == 0)
break;
if (dl == NULL) {
/*
* Allocate a new dirlock and add it to the list.
*/
dl = kmem_alloc(sizeof (zfs_dirlock_t), KM_SLEEP);
cv_init(&dl->dl_cv, NULL, CV_DEFAULT, NULL);
dl->dl_name = name;
dl->dl_sharecnt = 0;
dl->dl_namesize = 0;
dl->dl_dzp = dzp;
dl->dl_next = dzp->z_dirlocks;
dzp->z_dirlocks = dl;
break;
}
if ((flag & ZSHARED) && dl->dl_sharecnt != 0)
break;
cv_wait(&dl->dl_cv, &dzp->z_lock);
}
if ((flag & ZSHARED) && ++dl->dl_sharecnt > 1 && dl->dl_namesize == 0) {
/*
* We're the second shared reference to dl. Make a copy of
* dl_name in case the first thread goes away before we do.
* Note that we initialize the new name before storing its
* pointer into dl_name, because the first thread may load
* dl->dl_name at any time. He'll either see the old value,
* which is his, or the new shared copy; either is OK.
*/
dl->dl_namesize = strlen(dl->dl_name) + 1;
name = kmem_alloc(dl->dl_namesize, KM_SLEEP);
bcopy(dl->dl_name, name, dl->dl_namesize);
dl->dl_name = name;
}
mutex_exit(&dzp->z_lock);
/*
* We have a dirlock on the name. (Note that it is the dirlock,
* not the dzp's z_lock, that protects the name in the zap object.)
* See if there's an object by this name; if so, put a hold on it.
*/
if (flag & ZXATTR) {
zoid = dzp->z_phys->zp_xattr;
error = (zoid == 0 ? ENOENT : 0);
} else {
vp = dnlc_lookup(ZTOV(dzp), name);
if (vp == DNLC_NO_VNODE) {
VN_RELE(vp);
error = ENOENT;
} else if (vp) {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
VN_RELE(vp);
return (EEXIST);
}
*dlpp = dl;
*zpp = VTOZ(vp);
return (0);
} else {
error = zap_lookup(zfsvfs->z_os, dzp->z_id, name,
8, 1, &zoid);
if (error == ENOENT)
dnlc_update(ZTOV(dzp), name, DNLC_NO_VNODE);
}
}
if (error) {
if (error != ENOENT || (flag & ZEXISTS)) {
zfs_dirent_unlock(dl);
return (error);
}
} else {
if (flag & ZNEW) {
zfs_dirent_unlock(dl);
return (EEXIST);
}
error = zfs_zget(zfsvfs, zoid, zpp);
if (error) {
zfs_dirent_unlock(dl);
return (error);
}
if (!(flag & ZXATTR))
dnlc_update(ZTOV(dzp), name, ZTOV(*zpp));
}
*dlpp = dl;
return (0);
}
int
ud_dirlook(struct ud_inode *dip,
char *namep, struct ud_inode **ipp, struct cred *cr, int32_t skipdnlc)
{
struct udf_vfs *udf_vfsp;
int32_t error = 0, namelen, adhoc_search;
u_offset_t offset, adhoc_offset, dirsize, end;
struct vnode *dvp, *vp;
struct fbuf *fbp;
struct file_id *fid;
uint8_t *fname, dummy[3];
int32_t id_len, doingchk;
uint32_t old_loc;
uint16_t old_prn;
uint8_t *dname;
uint8_t *buf = NULL;
ud_printf("ud_dirlook\n");
udf_vfsp = dip->i_udf;
restart:
doingchk = 0;
old_prn = 0xFFFF;
old_loc = 0;
dvp = ITOV(dip);
/*
* Check accessibility of directory.
*/
if (dip->i_type != VDIR) {
return (ENOTDIR);
}
if (error = ud_iaccess(dip, IEXEC, cr)) {
return (error);
}
/*
* Null component name is synonym for directory being searched.
*/
if (*namep == '\0') {
VN_HOLD(dvp);
*ipp = dip;
return (0);
}
namelen = strlen(namep);
if ((namelen == 1) &&
(namep[0] == '.') && (namep[1] == '\0')) {
/* Current directory */
VN_HOLD(dvp);
*ipp = dip;
dnlc_enter(dvp, namep, ITOV(*ipp));
return (0);
}
if ((!skipdnlc) && (vp = dnlc_lookup(dvp, namep))) {
/* vp is already held from dnlc_lookup */
*ipp = VTOI(vp);
return (0);
}
dname = kmem_zalloc(1024, KM_SLEEP);
buf = kmem_zalloc(udf_vfsp->udf_lbsize, KM_SLEEP);
/*
* Read lock the inode we are searching. You will notice that we
* didn't hold the read lock while searching the dnlc. This means
* that the entry could now be in the dnlc. This doesn't cause any
* problems because dnlc_enter won't add an entry if it is already
* there.
*/
rw_enter(&dip->i_rwlock, RW_READER);
/*
* Take care to look at dip->i_diroff only once, as it
* may be changing due to other threads/cpus.
*/
recheck:
offset = dip->i_diroff;
end = dirsize = dip->i_size;
if (offset > dirsize) {
offset = 0;
}
adhoc_offset = offset;
adhoc_search = (offset == 0) ? 1 : 2;
fbp = NULL;
while (adhoc_search--) {
while (offset < end) {
error = ud_get_next_fid(dip, &fbp,
offset, &fid, &fname, buf);
if (error != 0) {
break;
}
if ((fid->fid_flags & FID_DELETED) == 0) {
if (fid->fid_flags & FID_PARENT) {
id_len = 2;
fname = dummy;
dummy[0] = '.';
dummy[1] = '.';
dummy[2] = '\0';
} else {
if ((error = ud_uncompress(
fid->fid_idlen, &id_len,
fname, dname)) != 0) {
break;
}
fname = (uint8_t *)dname;
fname[id_len] = '\0';
}
if ((namelen == id_len) &&
(strncmp(namep, (caddr_t)fname,
namelen) == 0)) {
uint32_t loc;
uint16_t prn;
loc = SWAP_32(fid->fid_icb.lad_ext_loc);
prn = SWAP_16(fid->fid_icb.lad_ext_prn);
dip->i_diroff = offset +
FID_LEN(fid);
if (doingchk) {
if ((loc == old_loc) &&
(prn == old_prn)) {
goto checkok;
} else {
if (fbp != NULL) {
fbrelse(fbp,
S_READ);
fbp = NULL;
}
VN_RELE(ITOV(*ipp));
rw_exit(&dip->i_rwlock);
goto restart;
}
/* NOTREACHED */
}
if (namelen == 2 &&
fname[0] == '.' &&
fname[1] == '.') {
struct timespec32 omtime;
omtime = dip->i_mtime;
rw_exit(&dip->i_rwlock);
error = ud_iget(dip->i_vfs, prn,
loc, ipp, NULL, cr);
rw_enter(&dip->i_rwlock,
RW_READER);
if (error) {
goto done;
}
if ((omtime.tv_sec !=
dip->i_mtime.tv_sec) ||
(omtime.tv_nsec !=
dip->i_mtime.tv_nsec)) {
doingchk = 1;
old_prn = prn;
old_loc = loc;
dip->i_diroff = 0;
if (fbp != NULL) {
fbrelse(fbp,
S_READ);
fbp = NULL;
}
goto recheck;
}
} else {
error = ud_iget(dip->i_vfs, prn,
loc, ipp, NULL, cr);
}
checkok:
if (error == 0) {
dnlc_enter(dvp, namep,
ITOV(*ipp));
}
goto done;
}
}
offset += FID_LEN(fid);
}
if (fbp != NULL) {
fbrelse(fbp, S_READ);
fbp = NULL;
}
end = adhoc_offset;
offset = 0;
}
error = ENOENT;
done:
kmem_free(buf, udf_vfsp->udf_lbsize);
kmem_free(dname, 1024);
if (fbp != NULL) {
fbrelse(fbp, S_READ);
}
rw_exit(&dip->i_rwlock);
return (error);
}