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Differential D19098 Diff 54399 head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c

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head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c

Show First 20 Lines • Show All 793 Lines • ▼ Show 20 Lineslibzfs_mnttab_cache_compare(const void *arg1, const void *arg2)
rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special);
return (AVL_ISIGN(rv)); return (AVL_ISIGN(rv));
} }
void void
libzfs_mnttab_init(libzfs_handle_t *hdl) libzfs_mnttab_init(libzfs_handle_t *hdl)
{ {
pthread_mutex_init(&hdl->libzfs_mnttab_cache_lock, NULL);
assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0);
avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare,
sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node));
} }
void void
libzfs_mnttab_update(libzfs_handle_t *hdl) libzfs_mnttab_update(libzfs_handle_t *hdl)
{ {
Show All 24 Lines while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))
!= NULL) { != NULL) {
free(mtn->mtn_mt.mnt_special); free(mtn->mtn_mt.mnt_special);
free(mtn->mtn_mt.mnt_mountp); free(mtn->mtn_mt.mnt_mountp);
free(mtn->mtn_mt.mnt_fstype); free(mtn->mtn_mt.mnt_fstype);
free(mtn->mtn_mt.mnt_mntopts); free(mtn->mtn_mt.mnt_mntopts);
free(mtn); free(mtn);
} }
avl_destroy(&hdl->libzfs_mnttab_cache); avl_destroy(&hdl->libzfs_mnttab_cache);
(void) pthread_mutex_destroy(&hdl->libzfs_mnttab_cache_lock);
} }
void void
libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable)
{ {
hdl->libzfs_mnttab_enable = enable; hdl->libzfs_mnttab_enable = enable;
} }
int int
libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname,
struct mnttab *entry) struct mnttab *entry)
{ {
mnttab_node_t find; mnttab_node_t find;
mnttab_node_t *mtn; mnttab_node_t *mtn;
int ret = ENOENT;
if (!hdl->libzfs_mnttab_enable) { if (!hdl->libzfs_mnttab_enable) {
struct mnttab srch = { 0 }; struct mnttab srch = { 0 };
if (avl_numnodes(&hdl->libzfs_mnttab_cache)) if (avl_numnodes(&hdl->libzfs_mnttab_cache))
libzfs_mnttab_fini(hdl); libzfs_mnttab_fini(hdl);
rewind(hdl->libzfs_mnttab); rewind(hdl->libzfs_mnttab);
srch.mnt_special = (char *)fsname; srch.mnt_special = (char *)fsname;
srch.mnt_fstype = MNTTYPE_ZFS; srch.mnt_fstype = MNTTYPE_ZFS;
if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0)
return (0); return (0);
else else
return (ENOENT); return (ENOENT);
} }
pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
libzfs_mnttab_update(hdl); libzfs_mnttab_update(hdl);
find.mtn_mt.mnt_special = (char *)fsname; find.mtn_mt.mnt_special = (char *)fsname;
mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL);
if (mtn) { if (mtn) {
*entry = mtn->mtn_mt; *entry = mtn->mtn_mt;
return (0); ret = 0;
} }
return (ENOENT); pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
return (ret);
} }
void void
libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special,
const char *mountp, const char *mntopts) const char *mountp, const char *mntopts)
{ {
mnttab_node_t *mtn; mnttab_node_t *mtn;
if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
return; if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) {
mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special);
mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp);
mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS);
mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts);
avl_add(&hdl->libzfs_mnttab_cache, mtn); avl_add(&hdl->libzfs_mnttab_cache, mtn);
} }
pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
}
void void
libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname)
{ {
mnttab_node_t find; mnttab_node_t find;
mnttab_node_t *ret; mnttab_node_t *ret;
pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
find.mtn_mt.mnt_special = (char *)fsname; find.mtn_mt.mnt_special = (char *)fsname;
if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))
!= NULL) { != NULL) {
avl_remove(&hdl->libzfs_mnttab_cache, ret); avl_remove(&hdl->libzfs_mnttab_cache, ret);
free(ret->mtn_mt.mnt_special); free(ret->mtn_mt.mnt_special);
free(ret->mtn_mt.mnt_mountp); free(ret->mtn_mt.mnt_mountp);
free(ret->mtn_mt.mnt_fstype); free(ret->mtn_mt.mnt_fstype);
free(ret->mtn_mt.mnt_mntopts); free(ret->mtn_mt.mnt_mntopts);
free(ret); free(ret);
} }
pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
} }
int int
zfs_spa_version(zfs_handle_t *zhp, int *spa_version) zfs_spa_version(zfs_handle_t *zhp, int *spa_version)
{ {
zpool_handle_t *zpool_handle = zhp->zpool_hdl; zpool_handle_t *zpool_handle = zhp->zpool_hdl;
if (zpool_handle == NULL) if (zpool_handle == NULL)
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