/*ARGSUSED*/
static int
compare_mountpoints(const void *a, const void *b, void *unused)
{
const prop_changenode_t *ca = a;
const prop_changenode_t *cb = b;
char mounta[MAXPATHLEN];
char mountb[MAXPATHLEN];
boolean_t hasmounta, hasmountb;
/*
* When unsharing or unmounting filesystems, we need to do it in
* mountpoint order. This allows the user to have a mountpoint
* hierarchy that is different from the dataset hierarchy, and still
* allow it to be changed. However, if either dataset doesn't have a
* mountpoint (because it is a volume or a snapshot), we place it at the
* end of the list, because it doesn't affect our change at all.
*/
hasmounta = (zfs_prop_get(ca->cn_handle, ZFS_PROP_MOUNTPOINT, mounta,
sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
hasmountb = (zfs_prop_get(cb->cn_handle, ZFS_PROP_MOUNTPOINT, mountb,
sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
if (!hasmounta && hasmountb)
return (-1);
else if (hasmounta && !hasmountb)
return (1);
else if (!hasmounta && !hasmountb)
return (0);
else
return (strcmp(mountb, mounta));
}
int
libzfs_dataset_cmp(const void *a, const void *b)
{
zfs_handle_t **za = (zfs_handle_t **)a;
zfs_handle_t **zb = (zfs_handle_t **)b;
char mounta[MAXPATHLEN];
char mountb[MAXPATHLEN];
boolean_t gota, gotb;
if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
if (gota && gotb)
return (strcmp(mounta, mountb));
if (gota)
return (-1);
if (gotb)
return (1);
return (strcmp(zfs_get_name(a), zfs_get_name(b)));
}
static char *
get_zfs_dataset(sa_handle_impl_t impl_handle, char *path,
boolean_t search_mnttab)
{
size_t i, count = 0;
char *dataset = NULL;
zfs_handle_t **zlist;
char mountpoint[ZFS_MAXPROPLEN];
char canmount[ZFS_MAXPROPLEN];
get_all_filesystems(impl_handle, &zlist, &count);
qsort(zlist, count, sizeof (void *), mountpoint_compare);
for (i = 0; i < count; i++) {
/* must have a mountpoint */
if (zfs_prop_get(zlist[i], ZFS_PROP_MOUNTPOINT, mountpoint,
sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
/* no mountpoint */
continue;
}
/* mountpoint must be a path */
if (strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) == 0 ||
strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
/*
* Search mmttab for mountpoint and get dataset.
*/
if (search_mnttab == B_TRUE &&
get_legacy_mountpoint(path, mountpoint,
sizeof (mountpoint), NULL, 0) == 0) {
dataset = mountpoint;
break;
}
continue;
}
/* canmount must be set */
canmount[0] = '\0';
if (zfs_prop_get(zlist[i], ZFS_PROP_CANMOUNT, canmount,
sizeof (canmount), NULL, NULL, 0, B_FALSE) != 0 ||
strcmp(canmount, "off") == 0)
continue;
/*
* have a mountable handle but want to skip those marked none
* and legacy
*/
if (strcmp(mountpoint, path) == 0) {
dataset = (char *)zfs_get_name(zlist[i]);
break;
}
}
if (dataset != NULL)
dataset = strdup(dataset);
return (dataset);
}
static int
update_zfs_shares_cb(zfs_handle_t *zhp, void *pcookie)
{
update_cookie_t *udata = (update_cookie_t *)pcookie;
char mountpoint[ZFS_MAXPROPLEN];
char shareopts[ZFS_MAXPROPLEN];
char *dataset;
zfs_type_t type = zfs_get_type(zhp);
if (type == ZFS_TYPE_FILESYSTEM &&
zfs_iter_filesystems(zhp, update_zfs_shares_cb, pcookie) != 0) {
zfs_close(zhp);
return (1);
}
if (type != ZFS_TYPE_FILESYSTEM) {
zfs_close(zhp);
return (0);
}
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
zfs_close(zhp);
return (0);
}
dataset = (char *)zfs_get_name(zhp);
if (dataset == NULL) {
zfs_close(zhp);
return (0);
}
if (!zfs_is_mounted(zhp, NULL)) {
zfs_close(zhp);
return (0);
}
if ((udata->proto == NULL || strcmp(udata->proto, "nfs") == 0) &&
zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0 &&
strcmp(shareopts, "off") != 0) {
(void) process_share(udata->handle, NULL, mountpoint, NULL,
"nfs", shareopts, NULL, dataset, B_FALSE);
}
if ((udata->proto == NULL || strcmp(udata->proto, "smb") == 0) &&
zfs_prop_get(zhp, ZFS_PROP_SHARESMB, shareopts,
sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0 &&
strcmp(shareopts, "off") != 0) {
(void) process_share(udata->handle, NULL, mountpoint, NULL,
"smb", shareopts, NULL, dataset, B_FALSE);
}
zfs_close(zhp);
return (0);
}
static int
mountpoint_compare(const void *a, const void *b)
{
zfs_handle_t **za = (zfs_handle_t **)a;
zfs_handle_t **zb = (zfs_handle_t **)b;
char mounta[MAXPATHLEN];
char mountb[MAXPATHLEN];
verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
return (strcmp(mounta, mountb));
}
/*
* Returns true if the given dataset is mountable, false otherwise. Returns the
* mountpoint in 'buf'.
*/
static boolean_t
zfs_is_mountable(zfs_handle_t *zhp, char *buf, size_t buflen,
zprop_source_t *source)
{
char sourceloc[ZFS_MAXNAMELEN];
zprop_source_t sourcetype;
if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type))
return (B_FALSE);
verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen,
&sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0);
if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 ||
strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0)
return (B_FALSE);
if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF)
return (B_FALSE);
if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) &&
getzoneid() == GLOBAL_ZONEID)
return (B_FALSE);
if (zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
ZFS_CRYPT_KEY_UNAVAILABLE)
return (B_FALSE);
if (source)
*source = sourcetype;
return (B_TRUE);
}
/*
* This method builds values for "sharesmb" property from values
* already existing on the share. The properties set via sa_zfs_sprint_new_prop
* method are passed in sharesmb_val. If a existing property is already
* set via sa_zfs_sprint_new_prop method, then they are not appended
* to the sharesmb_val string. The returned sharesmb_val string is a combination
* of new and existing values for 'sharesmb' property.
*/
static int
sa_zfs_sprintf_existing_prop(zfs_handle_t *handle, char *sharesmb_val)
{
char shareopts[ZFS_MAXPROPLEN], cur_val[MAXPATHLEN];
char *token, *last, *value;
if (zfs_prop_get(handle, ZFS_PROP_SHARESMB, shareopts,
sizeof (shareopts), NULL, NULL, 0, B_FALSE) != 0)
return (-1);
if (strstr(shareopts, "=") == NULL)
return (0);
for (token = strtok_r(shareopts, ",", &last); token != NULL;
token = strtok_r(NULL, ",", &last)) {
value = strchr(token, '=');
if (value == NULL)
return (-1);
*value++ = '\0';
(void) snprintf(cur_val, MAXPATHLEN, "%s=", token);
if (strstr(sharesmb_val, cur_val) == NULL) {
(void) strlcat(cur_val, value, MAXPATHLEN);
(void) strlcat(cur_val, ",", MAXPATHLEN);
(void) strlcat(sharesmb_val, cur_val, MAXPATHLEN);
}
}
return (0);
}
static int
mount_cb(zfs_handle_t *zhp, void *data)
{
get_all_cb_t *cbp = data;
if (!(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM)) {
zfs_close(zhp);
return (0);
}
if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_NOAUTO) {
zfs_close(zhp);
return (0);
}
/*
* If this filesystem is inconsistent and has a receive resume
* token, we can not mount it.
*/
if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
zfs_close(zhp);
return (0);
}
libzfs_add_handle(cbp, zhp);
if (zfs_iter_filesystems(zhp, mount_cb, cbp) != 0) {
zfs_close(zhp);
return (-1);
}
return (0);
}
int
zfs_crypto_get_encryption_root(zfs_handle_t *zhp, boolean_t *is_encroot,
char *buf)
{
int ret;
char prop_encroot[MAXNAMELEN];
/* if the dataset isn't encrypted, just return */
if (zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) == ZIO_CRYPT_OFF) {
*is_encroot = B_FALSE;
if (buf != NULL)
buf[0] = '\0';
return (0);
}
ret = zfs_prop_get(zhp, ZFS_PROP_ENCRYPTION_ROOT, prop_encroot,
sizeof (prop_encroot), NULL, NULL, 0, B_TRUE);
if (ret != 0) {
*is_encroot = B_FALSE;
if (buf != NULL)
buf[0] = '\0';
return (ret);
}
*is_encroot = strcmp(prop_encroot, zfs_get_name(zhp)) == 0;
if (buf != NULL)
strcpy(buf, prop_encroot);
return (0);
}
int
sa_zfs_is_shared(sa_handle_t sahandle, char *path)
{
int ret = 0;
char *dataset;
zfs_handle_t *handle = NULL;
char shareopts[ZFS_MAXPROPLEN];
libzfs_handle_t *libhandle;
dataset = get_zfs_dataset((sa_handle_t)sahandle, path, B_FALSE);
if (dataset != NULL) {
libhandle = libzfs_init();
if (libhandle != NULL) {
handle = zfs_open(libhandle, dataset,
ZFS_TYPE_FILESYSTEM);
if (handle != NULL) {
if (zfs_prop_get(handle, ZFS_PROP_SHARENFS,
shareopts, sizeof (shareopts), NULL, NULL,
0, B_FALSE) == 0 &&
strcmp(shareopts, "off") != 0) {
ret = 1; /* it is shared */
}
zfs_close(handle);
}
libzfs_fini(libhandle);
}
free(dataset);
}
return (ret);
}
int
zfs_share_iscsi(zfs_handle_t *zhp)
{
char shareopts[ZFS_MAXPROPLEN];
const char *dataset = zhp->zfs_name;
libzfs_handle_t *hdl = zhp->zfs_hdl;
/*
* Return success if there are no share options.
*/
if (zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
sizeof (shareopts), NULL, NULL, 0, B_FALSE) != 0 ||
strcmp(shareopts, "off") == 0)
return (0);
if (iscsitgt_zfs_share == NULL || iscsitgt_zfs_share(dataset) != 0) {
int error = EZFS_SHAREISCSIFAILED;
/*
* If service isn't availabele and EPERM was
* returned then use special error.
*/
if (iscsitgt_svc_online && errno == EPERM &&
(iscsitgt_svc_online() != 0))
error = EZFS_ISCSISVCUNAVAIL;
return (zfs_error_fmt(hdl, error,
dgettext(TEXT_DOMAIN, "cannot share '%s'"), dataset));
}
return (0);
}
/*
* Callback to backup each ZFS property
*/
static int
zfs_put_prop_cb(int prop, void *pp)
{
ndmp_metadata_handle_t *mhd;
ndmp_metadata_header_ext_t *mhp;
ndmp_metadata_property_ext_t *mpp;
char vbuf[ZFS_MAXPROPLEN];
char sbuf[ZFS_MAXPROPLEN];
zprop_source_t stype;
char *sourcestr;
if (pp == NULL)
return (ZPROP_INVAL);
mhd = (ndmp_metadata_handle_t *)pp;
mhp = mhd->ml_xhdr;
mpp = &mhp->nh_property[mhp->nh_count];
if (mhp->nh_count * sizeof (ndmp_metadata_property_ext_t) +
sizeof (ndmp_metadata_header_ext_t) > mhp->nh_total_bytes)
return (ZPROP_INVAL);
if (zfs_prop_get(mhd->ml_handle, prop, vbuf, sizeof (vbuf),
&stype, sbuf, sizeof (sbuf), B_TRUE) != 0) {
mhp->nh_count++;
return (ZPROP_CONT);
}
(void) strlcpy(mpp->mp_name, zfs_prop_to_name(prop), ZFS_MAXNAMELEN);
(void) strlcpy(mpp->mp_value, vbuf, ZFS_MAXPROPLEN);
switch (stype) {
case ZPROP_SRC_NONE:
sourcestr = "none";
break;
case ZPROP_SRC_RECEIVED:
sourcestr = "received";
break;
case ZPROP_SRC_LOCAL:
sourcestr = mhp->nh_dataset;
break;
case ZPROP_SRC_TEMPORARY:
sourcestr = "temporary";
break;
case ZPROP_SRC_DEFAULT:
sourcestr = "default";
break;
default:
sourcestr = sbuf;
break;
}
(void) strlcpy(mpp->mp_source, sourcestr, ZFS_MAXPROPLEN);
mhp->nh_count++;
return (ZPROP_CONT);
}
static char *
verify_zfs_handle(zfs_handle_t *hdl, const char *path, boolean_t search_mnttab)
{
char mountpoint[ZFS_MAXPROPLEN];
char canmount[ZFS_MAXPROPLEN] = { 0 };
/* must have a mountpoint */
if (zfs_prop_get(hdl, ZFS_PROP_MOUNTPOINT, mountpoint,
sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
/* no mountpoint */
return (NULL);
}
/* mountpoint must be a path */
if (strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) == 0 ||
strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
/*
* Search mmttab for mountpoint and get dataset.
*/
if (search_mnttab == B_TRUE &&
get_legacy_mountpoint(path, mountpoint,
sizeof (mountpoint), NULL, 0) == 0) {
return (strdup(mountpoint));
}
return (NULL);
}
/* canmount must be set */
if (zfs_prop_get(hdl, ZFS_PROP_CANMOUNT, canmount,
sizeof (canmount), NULL, NULL, 0, B_FALSE) != 0 ||
strcmp(canmount, "off") == 0)
return (NULL);
/*
* have a mountable handle but want to skip those marked none
* and legacy
*/
if (strcmp(mountpoint, path) == 0) {
return (strdup((char *)zfs_get_name(hdl)));
}
return (NULL);
}
/*
* Insert the backup snapshot name into the path.
*
* Input:
* name: Original path name.
*
* Output:
* name: Original name modified to include a snapshot.
*
* Returns:
* Original name modified to include a snapshot.
*/
char *
tlm_build_snapshot_name(char *name, char *sname, char *jname)
{
zfs_handle_t *zhp;
char *rest;
char volname[ZFS_MAXNAMELEN];
char mountpoint[PATH_MAX];
if (get_zfsvolname(volname, ZFS_MAXNAMELEN, name) == -1)
goto notzfs;
(void) mutex_lock(&zlib_mtx);
if ((zlibh == NULL) ||
(zhp = zfs_open(zlibh, volname, ZFS_TYPE_DATASET)) == NULL) {
(void) mutex_unlock(&zlib_mtx);
goto notzfs;
}
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, PATH_MAX, NULL,
NULL, 0, B_FALSE) != 0) {
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
goto notzfs;
}
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
rest = name + strlen(mountpoint);
(void) snprintf(sname, TLM_MAX_PATH_NAME, "%s/%s/%s%s", mountpoint,
TLM_SNAPSHOT_DIR, jname, rest);
return (sname);
notzfs:
(void) strlcpy(sname, name, TLM_MAX_PATH_NAME);
return (sname);
}
/*
* A ZFS file system iterator call-back function which returns the
* zfs_handle_t for a ZFS file system on the specified mount point.
*/
static int
match_mountpoint(zfs_handle_t *zhp, void *data)
{
int res;
zfs_mount_data_t *cbp;
char mp[ZFS_MAXPROPLEN];
if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
zfs_close(zhp);
return (0);
}
cbp = (zfs_mount_data_t *)data;
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mp, sizeof (mp), NULL, NULL,
0, B_FALSE) == 0 && strcmp(mp, cbp->match_name) == 0) {
cbp->match_handle = zhp;
return (1);
}
res = zfs_iter_filesystems(zhp, match_mountpoint, data);
zfs_close(zhp);
return (res);
}
/*
* This method computes ACL on share path from a share name.
* Return 0 upon success, -1 upon failure.
*/
static int
srvsvc_shareacl_getpath(smb_share_t *si, char *shr_acl_path)
{
char dataset[MAXPATHLEN];
char mp[ZFS_MAXPROPLEN];
libzfs_handle_t *libhd;
zfs_handle_t *zfshd;
int ret = 0;
ret = smb_getdataset(si->shr_path, dataset, MAXPATHLEN);
if (ret != 0)
return (ret);
if ((libhd = libzfs_init()) == NULL)
return (-1);
if ((zfshd = zfs_open(libhd, dataset, ZFS_TYPE_DATASET)) == NULL) {
libzfs_fini(libhd);
return (-1);
}
if (zfs_prop_get(zfshd, ZFS_PROP_MOUNTPOINT, mp, sizeof (mp), NULL,
NULL, 0, B_FALSE) != 0) {
zfs_close(zfshd);
libzfs_fini(libhd);
return (-1);
}
zfs_close(zfshd);
libzfs_fini(libhd);
(void) snprintf(shr_acl_path, MAXPATHLEN, "%s/.zfs/shares/%s",
mp, si->shr_name);
return (ret);
}
static char *
get_zfs_property(char *dataset, zfs_prop_t property)
{
zfs_handle_t *handle = NULL;
char shareopts[ZFS_MAXPROPLEN];
libzfs_handle_t *libhandle;
libhandle = libzfs_init();
if (libhandle != NULL) {
handle = zfs_open(libhandle, dataset, ZFS_TYPE_FILESYSTEM);
if (handle != NULL) {
if (zfs_prop_get(handle, property, shareopts,
sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0) {
zfs_close(handle);
libzfs_fini(libhandle);
return (strdup(shareopts));
}
zfs_close(handle);
}
libzfs_fini(libhandle);
}
return (NULL);
}
/*
* If the property is 'mountpoint' or 'sharenfs', go through and remount and/or
* reshare the filesystems as necessary. In changelist_gather() we recorded
* whether the filesystem was previously shared or mounted. The action we take
* depends on the previous state, and whether the value was previously 'legacy'.
* For non-legacy properties, we only remount/reshare the filesystem if it was
* previously mounted/shared. Otherwise, we always remount/reshare the
* filesystem.
*/
int
changelist_postfix(prop_changelist_t *clp)
{
prop_changenode_t *cn;
char shareopts[ZFS_MAXPROPLEN];
int errors = 0;
libzfs_handle_t *hdl;
/*
* If we're changing the mountpoint, attempt to destroy the underlying
* mountpoint. All other datasets will have inherited from this dataset
* (in which case their mountpoints exist in the filesystem in the new
* location), or have explicit mountpoints set (in which case they won't
* be in the changelist).
*/
if ((cn = uu_list_last(clp->cl_list)) == NULL)
return (0);
if (clp->cl_prop == ZFS_PROP_MOUNTPOINT &&
!(clp->cl_gflags & CL_GATHER_DONT_UNMOUNT)) {
remove_mountpoint(cn->cn_handle);
}
/*
* It is possible that the changelist_prefix() used libshare
* to unshare some entries. Since libshare caches data, an
* attempt to reshare during postfix can fail unless libshare
* is uninitialized here so that it will reinitialize later.
*/
if (cn->cn_handle != NULL) {
hdl = cn->cn_handle->zfs_hdl;
assert(hdl != NULL);
zfs_uninit_libshare(hdl);
}
/*
* We walk the datasets in reverse, because we want to mount any parent
* datasets before mounting the children. We walk all datasets even if
* there are errors.
*/
for (cn = uu_list_last(clp->cl_list); cn != NULL;
cn = uu_list_prev(clp->cl_list, cn)) {
boolean_t sharenfs;
boolean_t sharesmb;
boolean_t mounted;
/*
* If we are in the global zone, but this dataset is exported
* to a local zone, do nothing.
*/
if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
continue;
/* Only do post-processing if it's required */
if (!cn->cn_needpost)
continue;
cn->cn_needpost = B_FALSE;
zfs_refresh_properties(cn->cn_handle);
if (ZFS_IS_VOLUME(cn->cn_handle))
continue;
/*
* Remount if previously mounted or mountpoint was legacy,
* or sharenfs or sharesmb property is set.
*/
sharenfs = ((zfs_prop_get(cn->cn_handle, ZFS_PROP_SHARENFS,
shareopts, sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0) && (strcmp(shareopts, "off") != 0));
sharesmb = ((zfs_prop_get(cn->cn_handle, ZFS_PROP_SHARESMB,
shareopts, sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0) && (strcmp(shareopts, "off") != 0));
mounted = (clp->cl_gflags & CL_GATHER_DONT_UNMOUNT) ||
zfs_is_mounted(cn->cn_handle, NULL);
if (!mounted && (cn->cn_mounted ||
((sharenfs || sharesmb || clp->cl_waslegacy) &&
(zfs_prop_get_int(cn->cn_handle,
ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON)))) {
if (zfs_mount(cn->cn_handle, NULL, 0) != 0)
errors++;
else
mounted = TRUE;
}
/*
* If the file system is mounted we always re-share even
* if the filesystem is currently shared, so that we can
* adopt any new options.
*/
if (sharenfs && mounted)
errors += zfs_share_nfs(cn->cn_handle);
else if (cn->cn_shared || clp->cl_waslegacy)
errors += zfs_unshare_nfs(cn->cn_handle, NULL);
if (sharesmb && mounted)
errors += zfs_share_smb(cn->cn_handle);
else if (cn->cn_shared || clp->cl_waslegacy)
errors += zfs_unshare_smb(cn->cn_handle, NULL);
}
return (errors ? -1 : 0);
}
/*
* Sort datasets by specified columns.
*
* o Numeric types sort in ascending order.
* o String types sort in alphabetical order.
* o Types inappropriate for a row sort that row to the literal
* bottom, regardless of the specified ordering.
*
* If no sort columns are specified, or two datasets compare equally
* across all specified columns, they are sorted alphabetically by name
* with snapshots grouped under their parents.
*/
static int
zfs_sort(const void *larg, const void *rarg, void *data)
{
zfs_handle_t *l = ((zfs_node_t *)larg)->zn_handle;
zfs_handle_t *r = ((zfs_node_t *)rarg)->zn_handle;
zfs_sort_column_t *sc = (zfs_sort_column_t *)data;
zfs_sort_column_t *psc;
for (psc = sc; psc != NULL; psc = psc->sc_next) {
char lbuf[ZFS_MAXPROPLEN], rbuf[ZFS_MAXPROPLEN];
char *lstr, *rstr;
uint64_t lnum, rnum;
boolean_t lvalid, rvalid;
int ret = 0;
/*
* We group the checks below the generic code. If 'lstr' and
* 'rstr' are non-NULL, then we do a string based comparison.
* Otherwise, we compare 'lnum' and 'rnum'.
*/
lstr = rstr = NULL;
if (psc->sc_prop == ZPROP_INVAL) {
nvlist_t *luser, *ruser;
nvlist_t *lval, *rval;
luser = zfs_get_user_props(l);
ruser = zfs_get_user_props(r);
lvalid = (nvlist_lookup_nvlist(luser,
psc->sc_user_prop, &lval) == 0);
rvalid = (nvlist_lookup_nvlist(ruser,
psc->sc_user_prop, &rval) == 0);
if (lvalid)
verify(nvlist_lookup_string(lval,
ZPROP_VALUE, &lstr) == 0);
if (rvalid)
verify(nvlist_lookup_string(rval,
ZPROP_VALUE, &rstr) == 0);
} else if (psc->sc_prop == ZFS_PROP_NAME) {
lvalid = rvalid = B_TRUE;
(void) strlcpy(lbuf, zfs_get_name(l), sizeof(lbuf));
(void) strlcpy(rbuf, zfs_get_name(r), sizeof(rbuf));
lstr = lbuf;
rstr = rbuf;
} else if (zfs_prop_is_string(psc->sc_prop)) {
lvalid = (zfs_prop_get(l, psc->sc_prop, lbuf,
sizeof (lbuf), NULL, NULL, 0, B_TRUE) == 0);
rvalid = (zfs_prop_get(r, psc->sc_prop, rbuf,
sizeof (rbuf), NULL, NULL, 0, B_TRUE) == 0);
lstr = lbuf;
rstr = rbuf;
} else {
lvalid = zfs_prop_valid_for_type(psc->sc_prop,
zfs_get_type(l));
rvalid = zfs_prop_valid_for_type(psc->sc_prop,
zfs_get_type(r));
if (lvalid)
(void) zfs_prop_get_numeric(l, psc->sc_prop,
&lnum, NULL, NULL, 0);
if (rvalid)
(void) zfs_prop_get_numeric(r, psc->sc_prop,
&rnum, NULL, NULL, 0);
}
if (!lvalid && !rvalid)
continue;
else if (!lvalid)
return (1);
else if (!rvalid)
return (-1);
if (lstr)
ret = strcmp(lstr, rstr);
else if (lnum < rnum)
ret = -1;
else if (lnum > rnum)
ret = 1;
if (ret != 0) {
if (psc->sc_reverse == B_TRUE)
ret = (ret < 0) ? 1 : -1;
return (ret);
}
}
return (zfs_compare(larg, rarg, NULL));
}
int
sa_get_zfs_shares(sa_handle_t handle, char *groupname)
{
sa_group_t zfsgroup;
boolean_t nfs;
boolean_t nfs_inherited;
boolean_t smb;
boolean_t smb_inherited;
zfs_handle_t **zlist;
char nfsshareopts[ZFS_MAXPROPLEN];
char smbshareopts[ZFS_MAXPROPLEN];
sa_share_t share;
zprop_source_t source;
char nfssourcestr[ZFS_MAXPROPLEN];
char smbsourcestr[ZFS_MAXPROPLEN];
char mountpoint[ZFS_MAXPROPLEN];
size_t count = 0, i;
libzfs_handle_t *zfs_libhandle;
int err = SA_OK;
/*
* If we can't access libzfs, don't bother doing anything.
*/
zfs_libhandle = ((sa_handle_impl_t)handle)->zfs_libhandle;
if (zfs_libhandle == NULL)
return (SA_SYSTEM_ERR);
zfsgroup = find_or_create_group(handle, groupname, NULL, &err);
/* Not an error, this could be a legacy condition */
if (zfsgroup == NULL)
return (SA_OK);
/*
* need to walk the mounted ZFS pools and datasets to
* find shares that are possible.
*/
get_all_filesystems((sa_handle_impl_t)handle, &zlist, &count);
qsort(zlist, count, sizeof (void *), mountpoint_compare);
for (i = 0; i < count; i++) {
char *dataset;
source = ZPROP_SRC_ALL;
/* If no mountpoint, skip. */
if (zfs_prop_get(zlist[i], ZFS_PROP_MOUNTPOINT,
mountpoint, sizeof (mountpoint), NULL, NULL, 0,
B_FALSE) != 0)
continue;
/*
* zfs_get_name value must not be freed. It is just a
* pointer to a value in the handle.
*/
if ((dataset = (char *)zfs_get_name(zlist[i])) == NULL)
continue;
/*
* only deal with "mounted" file systems since
* unmounted file systems can't actually be shared.
*/
if (!zfs_is_mounted(zlist[i], NULL))
continue;
nfs = nfs_inherited = B_FALSE;
if (zfs_prop_get(zlist[i], ZFS_PROP_SHARENFS, nfsshareopts,
sizeof (nfsshareopts), &source, nfssourcestr,
ZFS_MAXPROPLEN, B_FALSE) == 0 &&
strcmp(nfsshareopts, "off") != 0) {
if (source & ZPROP_SRC_INHERITED)
nfs_inherited = B_TRUE;
else
nfs = B_TRUE;
}
smb = smb_inherited = B_FALSE;
if (zfs_prop_get(zlist[i], ZFS_PROP_SHARESMB, smbshareopts,
sizeof (smbshareopts), &source, smbsourcestr,
ZFS_MAXPROPLEN, B_FALSE) == 0 &&
strcmp(smbshareopts, "off") != 0) {
if (source & ZPROP_SRC_INHERITED)
smb_inherited = B_TRUE;
else
smb = B_TRUE;
}
/*
* If the mountpoint is already shared, it must be a
* non-ZFS share. We want to remove the share from its
* parent group and reshare it under ZFS.
*/
share = sa_find_share(handle, mountpoint);
if (share != NULL &&
(nfs || smb || nfs_inherited || smb_inherited)) {
err = sa_remove_share(share);
share = NULL;
}
/*
* At this point, we have the information needed to
* determine what to do with the share.
*
* If smb or nfs is set, we have a new sub-group.
* If smb_inherit and/or nfs_inherit is set, then
* place on an existing sub-group. If both are set,
* the existing sub-group is the closest up the tree.
*/
if (nfs || smb) {
/*
* Non-inherited is the straightforward
* case. sa_zfs_process_share handles it
* directly. Make sure that if the "other"
* protocol is inherited, that we treat it as
* non-inherited as well.
*/
if (nfs || nfs_inherited) {
err = sa_zfs_process_share(handle, zfsgroup,
share, mountpoint, "nfs",
0, nfsshareopts,
nfssourcestr, dataset);
share = sa_find_share(handle, mountpoint);
}
if (smb || smb_inherited) {
err = sa_zfs_process_share(handle, zfsgroup,
share, mountpoint, "smb",
0, smbshareopts,
smbsourcestr, dataset);
}
} else if (nfs_inherited || smb_inherited) {
char *grpdataset;
/*
* If we only have inherited groups, it is
* important to find the closer of the two if
* the protocols are set at different
* levels. The closest sub-group is the one we
* want to work with.
*/
if (nfs_inherited && smb_inherited) {
if (strcmp(nfssourcestr, smbsourcestr) <= 0)
grpdataset = nfssourcestr;
else
grpdataset = smbsourcestr;
} else if (nfs_inherited) {
grpdataset = nfssourcestr;
} else if (smb_inherited) {
grpdataset = smbsourcestr;
}
if (nfs_inherited) {
err = sa_zfs_process_share(handle, zfsgroup,
share, mountpoint, "nfs",
ZPROP_SRC_INHERITED, nfsshareopts,
grpdataset, dataset);
share = sa_find_share(handle, mountpoint);
}
if (smb_inherited) {
err = sa_zfs_process_share(handle, zfsgroup,
share, mountpoint, "smb",
ZPROP_SRC_INHERITED, smbshareopts,
grpdataset, dataset);
}
}
}
/*
* Don't need to free the "zlist" variable since it is only a
* pointer to a cached value that will be freed when
* sa_fini() is called.
*/
return (err);
}
int
zfs_crypto_rewrap(zfs_handle_t *zhp, nvlist_t *raw_props, boolean_t inheritkey)
{
int ret;
char errbuf[1024];
boolean_t is_encroot;
nvlist_t *props = NULL;
uint8_t *wkeydata = NULL;
uint_t wkeylen = 0;
dcp_cmd_t cmd = (inheritkey) ? DCP_CMD_INHERIT : DCP_CMD_NEW_KEY;
uint64_t crypt, pcrypt, keystatus, pkeystatus;
uint64_t keyformat = ZFS_KEYFORMAT_NONE;
zfs_handle_t *pzhp = NULL;
char *keylocation = NULL;
char origin_name[MAXNAMELEN];
char prop_keylocation[MAXNAMELEN];
char parent_name[ZFS_MAX_DATASET_NAME_LEN];
(void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN, "Key change error"));
/* check that encryption is enabled for the pool */
if (!encryption_feature_is_enabled(zhp->zpool_hdl)) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Encryption feature not enabled."));
ret = EINVAL;
goto error;
}
/* get crypt from dataset */
crypt = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION);
if (crypt == ZIO_CRYPT_OFF) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Dataset not encrypted."));
ret = EINVAL;
goto error;
}
/* get the encryption root of the dataset */
ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
if (ret != 0) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Failed to get encryption root for '%s'."),
zfs_get_name(zhp));
goto error;
}
/* Clones use their origin's key and cannot rewrap it */
ret = zfs_prop_get(zhp, ZFS_PROP_ORIGIN, origin_name,
sizeof (origin_name), NULL, NULL, 0, B_TRUE);
if (ret == 0 && strcmp(origin_name, "") != 0) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Keys cannot be changed on clones."));
ret = EINVAL;
goto error;
}
/*
* If the user wants to use the inheritkey variant of this function
* we don't need to collect any crypto arguments.
*/
if (!inheritkey) {
/* validate the provided properties */
ret = zfs_crypto_verify_rewrap_nvlist(zhp, raw_props, &props,
errbuf);
if (ret != 0)
goto error;
/*
* Load keyformat and keylocation from the nvlist. Fetch from
* the dataset properties if not specified.
*/
(void) nvlist_lookup_uint64(props,
zfs_prop_to_name(ZFS_PROP_KEYFORMAT), &keyformat);
(void) nvlist_lookup_string(props,
zfs_prop_to_name(ZFS_PROP_KEYLOCATION), &keylocation);
if (is_encroot) {
/*
* If this is already an ecryption root, just keep
* any properties not set by the user.
*/
if (keyformat == ZFS_KEYFORMAT_NONE) {
keyformat = zfs_prop_get_int(zhp,
ZFS_PROP_KEYFORMAT);
ret = nvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_KEYFORMAT),
keyformat);
if (ret != 0) {
zfs_error_aux(zhp->zfs_hdl,
dgettext(TEXT_DOMAIN, "Failed to "
"get existing keyformat "
"property."));
goto error;
}
}
if (keylocation == NULL) {
ret = zfs_prop_get(zhp, ZFS_PROP_KEYLOCATION,
prop_keylocation, sizeof (prop_keylocation),
NULL, NULL, 0, B_TRUE);
if (ret != 0) {
zfs_error_aux(zhp->zfs_hdl,
dgettext(TEXT_DOMAIN, "Failed to "
"get existing keylocation "
"property."));
goto error;
}
keylocation = prop_keylocation;
}
} else {
/* need a new key for non-encryption roots */
if (keyformat == ZFS_KEYFORMAT_NONE) {
ret = EINVAL;
zfs_error_aux(zhp->zfs_hdl,
dgettext(TEXT_DOMAIN, "Keyformat required "
"for new encryption root."));
goto error;
}
/* default to prompt if no keylocation is specified */
if (keylocation == NULL) {
keylocation = "prompt";
ret = nvlist_add_string(props,
zfs_prop_to_name(ZFS_PROP_KEYLOCATION),
keylocation);
if (ret != 0)
goto error;
}
}
/* fetch the new wrapping key and associated properties */
ret = populate_create_encryption_params_nvlists(zhp->zfs_hdl,
zhp, B_TRUE, keyformat, keylocation, props, &wkeydata,
&wkeylen);
if (ret != 0)
goto error;
} else {
/* check that zhp is an encryption root */
if (!is_encroot) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Key inheritting can only be performed on "
"encryption roots."));
ret = EINVAL;
goto error;
}
/* get the parent's name */
ret = zfs_parent_name(zhp, parent_name, sizeof (parent_name));
if (ret != 0) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Root dataset cannot inherit key."));
ret = EINVAL;
goto error;
}
/* get a handle to the parent */
pzhp = make_dataset_handle(zhp->zfs_hdl, parent_name);
if (pzhp == NULL) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Failed to lookup parent."));
ret = ENOENT;
goto error;
}
/* parent must be encrypted */
pcrypt = zfs_prop_get_int(pzhp, ZFS_PROP_ENCRYPTION);
if (pcrypt == ZIO_CRYPT_OFF) {
zfs_error_aux(pzhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Parent must be encrypted."));
ret = EINVAL;
goto error;
}
/* check that the parent's key is loaded */
pkeystatus = zfs_prop_get_int(pzhp, ZFS_PROP_KEYSTATUS);
if (pkeystatus == ZFS_KEYSTATUS_UNAVAILABLE) {
zfs_error_aux(pzhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Parent key must be loaded."));
ret = EACCES;
goto error;
}
}
/* check that the key is loaded */
keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
if (keystatus == ZFS_KEYSTATUS_UNAVAILABLE) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Key must be loaded."));
ret = EACCES;
goto error;
}
/* call the ioctl */
ret = lzc_change_key(zhp->zfs_name, cmd, props, wkeydata, wkeylen);
if (ret != 0) {
switch (ret) {
case EPERM:
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Permission denied."));
break;
case EINVAL:
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Invalid properties for key change."));
break;
case EACCES:
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"Key is not currently loaded."));
break;
}
zfs_error(zhp->zfs_hdl, EZFS_CRYPTOFAILED, errbuf);
}
if (pzhp != NULL)
zfs_close(pzhp);
if (props != NULL)
nvlist_free(props);
if (wkeydata != NULL)
free(wkeydata);
return (ret);
error:
if (pzhp != NULL)
zfs_close(pzhp);
if (props != NULL)
nvlist_free(props);
if (wkeydata != NULL)
free(wkeydata);
zfs_error(zhp->zfs_hdl, EZFS_CRYPTOFAILED, errbuf);
return (ret);
}
/*
* Mount the given filesystem.
*/
int
zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
{
struct stat buf;
char mountpoint[ZFS_MAXPROPLEN];
char mntopts[MNT_LINE_MAX];
char overlay[ZFS_MAXPROPLEN];
libzfs_handle_t *hdl = zhp->zfs_hdl;
int remount = 0, rc;
if (options == NULL) {
(void) strlcpy(mntopts, MNTOPT_DEFAULTS, sizeof (mntopts));
} else {
(void) strlcpy(mntopts, options, sizeof (mntopts));
}
if (strstr(mntopts, MNTOPT_REMOUNT) != NULL)
remount = 1;
/*
* If the pool is imported read-only then all mounts must be read-only
*/
if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL))
(void) strlcat(mntopts, "," MNTOPT_RO, sizeof (mntopts));
if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
return (0);
/*
* Append default mount options which apply to the mount point.
* This is done because under Linux (unlike Solaris) multiple mount
* points may reference a single super block. This means that just
* given a super block there is no back reference to update the per
* mount point options.
*/
rc = zfs_add_options(zhp, mntopts, sizeof (mntopts));
if (rc) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"default options unavailable"));
return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
mountpoint));
}
/*
* Append zfsutil option so the mount helper allow the mount
*/
strlcat(mntopts, "," MNTOPT_ZFSUTIL, sizeof (mntopts));
/* Create the directory if it doesn't already exist */
if (lstat(mountpoint, &buf) != 0) {
if (mkdirp(mountpoint, 0755) != 0) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"failed to create mountpoint"));
return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
mountpoint));
}
}
/*
* Overlay mounts are disabled by default but may be enabled
* via the 'overlay' property or the 'zfs mount -O' option.
*/
if (!(flags & MS_OVERLAY)) {
if (zfs_prop_get(zhp, ZFS_PROP_OVERLAY, overlay,
sizeof (overlay), NULL, NULL, 0, B_FALSE) == 0) {
if (strcmp(overlay, "on") == 0) {
flags |= MS_OVERLAY;
}
}
}
/*
* Determine if the mountpoint is empty. If so, refuse to perform the
* mount. We don't perform this check if 'remount' is
* specified or if overlay option(-O) is given
*/
if ((flags & MS_OVERLAY) == 0 && !remount &&
!dir_is_empty(mountpoint)) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"directory is not empty"));
return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
dgettext(TEXT_DOMAIN, "cannot mount '%s'"), mountpoint));
}
/* perform the mount */
rc = do_mount(zfs_get_name(zhp), mountpoint, mntopts);
if (rc) {
/*
* Generic errors are nasty, but there are just way too many
* from mount(), and they're well-understood. We pick a few
* common ones to improve upon.
*/
if (rc == EBUSY) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"mountpoint or dataset is busy"));
} else if (rc == EPERM) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"Insufficient privileges"));
} else if (rc == ENOTSUP) {
char buf[256];
int spa_version;
VERIFY(zfs_spa_version(zhp, &spa_version) == 0);
(void) snprintf(buf, sizeof (buf),
dgettext(TEXT_DOMAIN, "Can't mount a version %lld "
"file system on a version %d pool. Pool must be"
" upgraded to mount this file system."),
(u_longlong_t)zfs_prop_get_int(zhp,
ZFS_PROP_VERSION), spa_version);
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, buf));
} else {
zfs_error_aux(hdl, strerror(rc));
}
return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
zhp->zfs_name));
}
/* remove the mounted entry before re-adding on remount */
if (remount)
libzfs_mnttab_remove(hdl, zhp->zfs_name);
/* add the mounted entry into our cache */
libzfs_mnttab_add(hdl, zfs_get_name(zhp), mountpoint, mntopts);
return (0);
}
/*
* A ZFS file system iterator call-back function which returns the
* zfs_handle_t for a ZFS file system on the specified mount point.
*/
static int
match_mountpoint(zfs_handle_t *zhp, void *data)
{
int res;
zfs_mount_data_t *cbp;
char mp[ZFS_MAXPROPLEN];
if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
zfs_close(zhp);
return (0);
}
/* First check if the dataset is mounted. */
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTED, mp, sizeof (mp), NULL, NULL,
0, B_FALSE) != 0 || strcmp(mp, "no") == 0) {
zfs_close(zhp);
return (0);
}
/* Now check mount point. */
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mp, sizeof (mp), NULL, NULL,
0, B_FALSE) != 0) {
zfs_close(zhp);
return (0);
}
cbp = (zfs_mount_data_t *)data;
if (strcmp(mp, "legacy") == 0) {
/* If legacy, must look in mnttab for mountpoint. */
FILE *fp;
struct mnttab entry;
const char *nm;
nm = zfs_get_name(zhp);
if ((fp = fopen(MNTTAB, "r")) == NULL) {
zfs_close(zhp);
return (0);
}
while (getmntent(fp, &entry) == 0) {
if (strcmp(nm, entry.mnt_special) == 0) {
if (strcmp(entry.mnt_mountp, cbp->match_name)
== 0) {
(void) fclose(fp);
cbp->match_handle = zhp;
return (1);
}
break;
}
}
(void) fclose(fp);
} else if (strcmp(mp, cbp->match_name) == 0) {
cbp->match_handle = zhp;
return (1);
}
/* Iterate over any nested datasets. */
res = zfs_iter_filesystems(zhp, match_mountpoint, data);
zfs_close(zhp);
return (res);
}
/*
* If the property is 'mountpoint' or 'sharenfs', go through and remount and/or
* reshare the filesystems as necessary. In changelist_gather() we recorded
* whether the filesystem was previously shared or mounted. The action we take
* depends on the previous state, and whether the value was previously 'legacy'.
* For non-legacy properties, we only remount/reshare the filesystem if it was
* previously mounted/shared. Otherwise, we always remount/reshare the
* filesystem.
*/
int
changelist_postfix(prop_changelist_t *clp)
{
prop_changenode_t *cn;
char shareopts[ZFS_MAXPROPLEN];
int ret = 0;
libzfs_handle_t *hdl;
/*
* If we're changing the mountpoint, attempt to destroy the underlying
* mountpoint. All other datasets will have inherited from this dataset
* (in which case their mountpoints exist in the filesystem in the new
* location), or have explicit mountpoints set (in which case they won't
* be in the changelist).
*/
if ((cn = uu_list_last(clp->cl_list)) == NULL)
return (0);
if (clp->cl_prop == ZFS_PROP_MOUNTPOINT)
remove_mountpoint(cn->cn_handle);
/*
* It is possible that the changelist_prefix() used libshare
* to unshare some entries. Since libshare caches data, an
* attempt to reshare during postfix can fail unless libshare
* is uninitialized here so that it will reinitialize later.
*/
if (cn->cn_handle != NULL) {
hdl = cn->cn_handle->zfs_hdl;
assert(hdl != NULL);
#ifndef __APPLE__
zfs_uninit_libshare(hdl);
#endif
}
/*
* We walk the datasets in reverse, because we want to mount any parent
* datasets before mounting the children.
*/
for (cn = uu_list_last(clp->cl_list); cn != NULL;
cn = uu_list_prev(clp->cl_list, cn)) {
boolean_t sharenfs;
#ifndef __APPLE__
/*
* If we are in the global zone, but this dataset is exported
* to a local zone, do nothing.
*/
if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
continue;
#endif /*!__APPLE__*/
zfs_refresh_properties(cn->cn_handle);
if (ZFS_IS_VOLUME(cn->cn_handle)) {
/*
* If we're doing a rename, recreate the /dev/zvol
* links.
*/
if (clp->cl_realprop == ZFS_PROP_NAME &&
zvol_create_link(cn->cn_handle->zfs_hdl,
cn->cn_handle->zfs_name) != 0) {
ret = -1;
} else if (cn->cn_shared ||
clp->cl_prop == ZFS_PROP_SHAREISCSI) {
if (zfs_prop_get(cn->cn_handle,
ZFS_PROP_SHAREISCSI, shareopts,
sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0 &&
strcmp(shareopts, "off") == 0) {
ret = zfs_unshare_iscsi(cn->cn_handle);
} else {
ret = zfs_share_iscsi(cn->cn_handle);
}
}
continue;
}
/*
* Remount if previously mounted or mountpoint was legacy,
* or sharenfs property is set.
*/
sharenfs = ((zfs_prop_get(cn->cn_handle, ZFS_PROP_SHARENFS,
shareopts, sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0) && (strcmp(shareopts, "off") != 0));
if ((cn->cn_mounted || clp->cl_waslegacy || sharenfs) &&
!zfs_is_mounted(cn->cn_handle, NULL) &&
zfs_mount(cn->cn_handle, NULL, 0) != 0)
ret = -1;
/*
* We always re-share even if the filesystem is currently
* shared, so that we can adopt any new options.
*/
if (cn->cn_shared || clp->cl_waslegacy || sharenfs) {
if (sharenfs)
ret = zfs_share_nfs(cn->cn_handle);
else
ret = zfs_unshare_nfs(cn->cn_handle, NULL);
}
}
return (ret);
}
/*
* sa_get_zfs_info(libzfs, path, mountpoint, dataset)
*
* Find the ZFS dataset and mountpoint for a given path
*/
int
sa_zfs_get_info(libzfs_handle_t *libzfs, char *path, char *mountpointp,
char *datasetp)
{
get_all_cbdata_t cb = { 0 };
int i;
char mountpoint[ZFS_MAXPROPLEN];
char dataset[ZFS_MAXPROPLEN];
char canmount[ZFS_MAXPROPLEN];
char *dp;
int count;
int ret = 0;
cb.cb_types = ZFS_TYPE_FILESYSTEM;
if (libzfs == NULL)
return (0);
(void) zfs_iter_root(libzfs, get_one_filesystem, &cb);
count = cb.cb_used;
qsort(cb.cb_handles, count, sizeof (void *), mountpoint_compare);
for (i = 0; i < count; i++) {
/* must have a mountpoint */
if (zfs_prop_get(cb.cb_handles[i], ZFS_PROP_MOUNTPOINT,
mountpoint, sizeof (mountpoint),
NULL, NULL, 0, B_FALSE) != 0) {
/* no mountpoint */
continue;
}
/* mountpoint must be a path */
if (strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) == 0 ||
strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
/*
* Search mmttab for mountpoint
*/
if (get_legacy_mountpoint(path, dataset,
ZFS_MAXPROPLEN, mountpoint,
ZFS_MAXPROPLEN) == 0) {
ret = 1;
break;
}
continue;
}
/* canmount must be set */
canmount[0] = '\0';
if (zfs_prop_get(cb.cb_handles[i], ZFS_PROP_CANMOUNT, canmount,
sizeof (canmount), NULL, NULL, 0, B_FALSE) != 0 ||
strcmp(canmount, "off") == 0)
continue;
/*
* have a mountable handle but want to skip those marked none
* and legacy
*/
if (strcmp(mountpoint, path) == 0) {
dp = (char *)zfs_get_name(cb.cb_handles[i]);
if (dp != NULL) {
if (datasetp != NULL)
(void) strcpy(datasetp, dp);
if (mountpointp != NULL)
(void) strcpy(mountpointp, mountpoint);
ret = 1;
}
break;
}
}
return (ret);
}
static int
change_one(zfs_handle_t *zhp, void *data)
{
prop_changelist_t *clp = data;
char property[ZFS_MAXPROPLEN];
char where[64];
prop_changenode_t *cn;
zfs_source_t sourcetype;
/*
* We only want to unmount/unshare those filesystems that may inherit
* from the target filesystem. If we find any filesystem with a
* locally set mountpoint, we ignore any children since changing the
* property will not affect them. If this is a rename, we iterate
* over all children regardless, since we need them unmounted in
* order to do the rename. Also, if this is a volume and we're doing
* a rename, then always add it to the changelist.
*/
if (!(ZFS_IS_VOLUME(zhp) && clp->cl_realprop == ZFS_PROP_NAME) &&
zfs_prop_get(zhp, clp->cl_prop, property,
sizeof (property), &sourcetype, where, sizeof (where),
B_FALSE) != 0) {
zfs_close(zhp);
return (0);
}
if (clp->cl_alldependents || clp->cl_allchildren ||
sourcetype == ZFS_SRC_DEFAULT || sourcetype == ZFS_SRC_INHERITED) {
if ((cn = zfs_alloc(zfs_get_handle(zhp),
sizeof (prop_changenode_t))) == NULL) {
zfs_close(zhp);
return (-1);
}
cn->cn_handle = zhp;
cn->cn_mounted = zfs_is_mounted(zhp, NULL);
cn->cn_shared = zfs_is_shared(zhp);
#ifndef __APPLE__
cn->cn_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
/* Indicate if any child is exported to a local zone. */
if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
clp->cl_haszonedchild = B_TRUE;
#endif /*!__APPLE__*/
uu_list_node_init(cn, &cn->cn_listnode, clp->cl_pool);
if (clp->cl_sorted) {
uu_list_index_t idx;
(void) uu_list_find(clp->cl_list, cn, NULL,
&idx);
uu_list_insert(clp->cl_list, cn, idx);
} else {
ASSERT(!clp->cl_alldependents);
verify(uu_list_insert_before(clp->cl_list,
uu_list_first(clp->cl_list), cn) == 0);
}
if (!clp->cl_alldependents)
return (zfs_iter_children(zhp, change_one, data));
} else {
zfs_close(zhp);
}
return (0);
}
/*
* Given a ZFS handle and a property, construct a complete list of datasets
* that need to be modified as part of this process. For anything but the
* 'mountpoint' and 'sharenfs' properties, this just returns an empty list.
* Otherwise, we iterate over all children and look for any datasets that
* inherit the property. For each such dataset, we add it to the list and
* mark whether it was shared beforehand.
*/
prop_changelist_t *
changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
int mnt_flags)
{
prop_changelist_t *clp;
prop_changenode_t *cn;
zfs_handle_t *temp;
char property[ZFS_MAXPROPLEN];
uu_compare_fn_t *compare = NULL;
boolean_t legacy = B_FALSE;
if ((clp = zfs_alloc(zhp->zfs_hdl, sizeof (prop_changelist_t))) == NULL)
return (NULL);
/*
* For mountpoint-related tasks, we want to sort everything by
* mountpoint, so that we mount and unmount them in the appropriate
* order, regardless of their position in the hierarchy.
*/
if (prop == ZFS_PROP_NAME || prop == ZFS_PROP_ZONED ||
prop == ZFS_PROP_MOUNTPOINT || prop == ZFS_PROP_SHARENFS ||
prop == ZFS_PROP_SHARESMB) {
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
property, sizeof (property),
NULL, NULL, 0, B_FALSE) == 0 &&
(strcmp(property, "legacy") == 0 ||
strcmp(property, "none") == 0)) {
legacy = B_TRUE;
}
if (!legacy) {
compare = compare_mountpoints;
clp->cl_sorted = B_TRUE;
}
}
clp->cl_pool = uu_list_pool_create("changelist_pool",
sizeof (prop_changenode_t),
offsetof(prop_changenode_t, cn_listnode),
compare, 0);
if (clp->cl_pool == NULL) {
assert(uu_error() == UU_ERROR_NO_MEMORY);
(void) zfs_error(zhp->zfs_hdl, EZFS_NOMEM, "internal error");
changelist_free(clp);
return (NULL);
}
clp->cl_list = uu_list_create(clp->cl_pool, NULL,
clp->cl_sorted ? UU_LIST_SORTED : 0);
clp->cl_gflags = gather_flags;
clp->cl_mflags = mnt_flags;
if (clp->cl_list == NULL) {
assert(uu_error() == UU_ERROR_NO_MEMORY);
(void) zfs_error(zhp->zfs_hdl, EZFS_NOMEM, "internal error");
changelist_free(clp);
return (NULL);
}
/*
* If this is a rename or the 'zoned' property, we pretend we're
* changing the mountpoint and flag it so we can catch all children in
* change_one().
*
* Flag cl_alldependents to catch all children plus the dependents
* (clones) that are not in the hierarchy.
*/
if (prop == ZFS_PROP_NAME) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
clp->cl_alldependents = B_TRUE;
} else if (prop == ZFS_PROP_ZONED) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
clp->cl_allchildren = B_TRUE;
} else if (prop == ZFS_PROP_CANMOUNT) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
} else if (prop == ZFS_PROP_VOLSIZE) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
} else {
clp->cl_prop = prop;
}
clp->cl_realprop = prop;
if (clp->cl_prop != ZFS_PROP_MOUNTPOINT &&
clp->cl_prop != ZFS_PROP_SHARENFS &&
clp->cl_prop != ZFS_PROP_SHARESMB)
return (clp);
/*
* If watching SHARENFS or SHARESMB then
* also watch its companion property.
*/
if (clp->cl_prop == ZFS_PROP_SHARENFS)
clp->cl_shareprop = ZFS_PROP_SHARESMB;
else if (clp->cl_prop == ZFS_PROP_SHARESMB)
clp->cl_shareprop = ZFS_PROP_SHARENFS;
if (clp->cl_alldependents) {
if (zfs_iter_dependents(zhp, B_TRUE, change_one, clp) != 0) {
changelist_free(clp);
return (NULL);
}
} else if (zfs_iter_children(zhp, change_one, clp) != 0) {
changelist_free(clp);
return (NULL);
}
/*
* We have to re-open ourselves because we auto-close all the handles
* and can't tell the difference.
*/
if ((temp = zfs_open(zhp->zfs_hdl, zfs_get_name(zhp),
ZFS_TYPE_DATASET)) == NULL) {
changelist_free(clp);
return (NULL);
}
/*
* Always add ourself to the list. We add ourselves to the end so that
* we're the last to be unmounted.
*/
if ((cn = zfs_alloc(zhp->zfs_hdl,
sizeof (prop_changenode_t))) == NULL) {
zfs_close(temp);
changelist_free(clp);
return (NULL);
}
cn->cn_handle = temp;
cn->cn_mounted = (clp->cl_gflags & CL_GATHER_MOUNT_ALWAYS) ||
zfs_is_mounted(temp, NULL);
cn->cn_shared = zfs_is_shared(temp);
cn->cn_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
cn->cn_needpost = B_TRUE;
uu_list_node_init(cn, &cn->cn_listnode, clp->cl_pool);
if (clp->cl_sorted) {
uu_list_index_t idx;
(void) uu_list_find(clp->cl_list, cn, NULL, &idx);
uu_list_insert(clp->cl_list, cn, idx);
} else {
/*
* Add the target dataset to the end of the list.
* The list is not really unsorted. The list will be
* in reverse dataset name order. This is necessary
* when the original mountpoint is legacy or none.
*/
verify(uu_list_insert_after(clp->cl_list,
uu_list_last(clp->cl_list), cn) == 0);
}
/*
* If the mountpoint property was previously 'legacy', or 'none',
* record it as the behavior of changelist_postfix() will be different.
*/
if ((clp->cl_prop == ZFS_PROP_MOUNTPOINT) && legacy) {
/*
* do not automatically mount ex-legacy datasets if
* we specifically set canmount to noauto
*/
if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) !=
ZFS_CANMOUNT_NOAUTO)
clp->cl_waslegacy = B_TRUE;
}
return (clp);
}
/*
* Given a ZFS handle and a property, construct a complete list of datasets
* that need to be modified as part of this process. For anything but the
* 'mountpoint' and 'sharenfs' properties, this just returns an empty list.
* Otherwise, we iterate over all children and look for any datasets that
* inherit the property. For each such dataset, we add it to the list and
* mark whether it was shared beforehand.
*/
prop_changelist_t *
changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int flags)
{
prop_changelist_t *clp;
prop_changenode_t *cn;
zfs_handle_t *temp;
char property[ZFS_MAXPROPLEN];
uu_compare_fn_t *compare = NULL;
if ((clp = zfs_alloc(zhp->zfs_hdl, sizeof (prop_changelist_t))) == NULL)
return (NULL);
/*
* For mountpoint-related tasks, we want to sort everything by
* mountpoint, so that we mount and unmount them in the appropriate
* order, regardless of their position in the hierarchy.
*/
if (prop == ZFS_PROP_NAME || prop == ZFS_PROP_ZONED ||
prop == ZFS_PROP_MOUNTPOINT || prop == ZFS_PROP_SHARENFS) {
compare = compare_mountpoints;
clp->cl_sorted = B_TRUE;
}
clp->cl_pool = uu_list_pool_create("changelist_pool",
sizeof (prop_changenode_t),
offsetof(prop_changenode_t, cn_listnode),
compare, 0);
if (clp->cl_pool == NULL) {
assert(uu_error() == UU_ERROR_NO_MEMORY);
(void) zfs_error(zhp->zfs_hdl, EZFS_NOMEM, "internal error");
changelist_free(clp);
return (NULL);
}
clp->cl_list = uu_list_create(clp->cl_pool, NULL,
clp->cl_sorted ? UU_LIST_SORTED : 0);
clp->cl_flags = flags;
if (clp->cl_list == NULL) {
assert(uu_error() == UU_ERROR_NO_MEMORY);
(void) zfs_error(zhp->zfs_hdl, EZFS_NOMEM, "internal error");
changelist_free(clp);
return (NULL);
}
/*
* If this is a rename or the 'zoned' property, we pretend we're
* changing the mountpoint and flag it so we can catch all children in
* change_one().
*
* Flag cl_alldependents to catch all children plus the dependents
* (clones) that are not in the hierarchy.
*/
if (prop == ZFS_PROP_NAME) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
clp->cl_alldependents = B_TRUE;
} else if (prop == ZFS_PROP_ZONED) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
clp->cl_allchildren = B_TRUE;
} else if (prop == ZFS_PROP_CANMOUNT) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
} else if (prop == ZFS_PROP_VOLSIZE) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
} else if (prop == ZFS_PROP_VERSION) {
clp->cl_prop = ZFS_PROP_MOUNTPOINT;
} else {
clp->cl_prop = prop;
}
clp->cl_realprop = prop;
if (clp->cl_prop != ZFS_PROP_MOUNTPOINT &&
clp->cl_prop != ZFS_PROP_SHARENFS &&
clp->cl_prop != ZFS_PROP_SHAREISCSI)
return (clp);
if (clp->cl_alldependents) {
if (zfs_iter_dependents(zhp, B_TRUE, change_one, clp) != 0) {
changelist_free(clp);
return (NULL);
}
} else if (zfs_iter_children(zhp, change_one, clp) != 0) {
changelist_free(clp);
return (NULL);
}
/*
* We have to re-open ourselves because we auto-close all the handles
* and can't tell the difference.
*/
if ((temp = zfs_open(zhp->zfs_hdl, zfs_get_name(zhp),
ZFS_TYPE_ANY)) == NULL) {
changelist_free(clp);
return (NULL);
}
/*
* Always add ourself to the list. We add ourselves to the end so that
* we're the last to be unmounted.
*/
if ((cn = zfs_alloc(zhp->zfs_hdl,
sizeof (prop_changenode_t))) == NULL) {
zfs_close(temp);
changelist_free(clp);
return (NULL);
}
cn->cn_handle = temp;
cn->cn_mounted = zfs_is_mounted(temp, NULL);
cn->cn_shared = zfs_is_shared(temp);
#ifndef __APPLE__
cn->cn_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
#endif /*!__APPLE__*/
uu_list_node_init(cn, &cn->cn_listnode, clp->cl_pool);
if (clp->cl_sorted) {
uu_list_index_t idx;
(void) uu_list_find(clp->cl_list, cn, NULL, &idx);
uu_list_insert(clp->cl_list, cn, idx);
} else {
verify(uu_list_insert_after(clp->cl_list,
uu_list_last(clp->cl_list), cn) == 0);
}
/*
* If the mountpoint property was previously 'legacy', or 'none',
* record it as the behavior of changelist_postfix() will be different.
*/
if ((clp->cl_prop == ZFS_PROP_MOUNTPOINT) &&
(zfs_prop_get(zhp, prop, property, sizeof (property),
NULL, NULL, 0, B_FALSE) == 0 &&
(strcmp(property, "legacy") == 0 || strcmp(property, "none") == 0)))
clp->cl_waslegacy = B_TRUE;
return (clp);
}
/*
* Share the given filesystem according to the options in the specified
* protocol specific properties (sharenfs, sharesmb). We rely
* on "libshare" to the dirty work for us.
*/
static int
zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
{
char mountpoint[ZFS_MAXPROPLEN];
char shareopts[ZFS_MAXPROPLEN];
char sourcestr[ZFS_MAXPROPLEN];
libzfs_handle_t *hdl = zhp->zfs_hdl;
sa_share_t share;
zfs_share_proto_t *curr_proto;
zprop_source_t sourcetype;
int ret;
if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
return (0);
if ((ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) {
(void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED,
dgettext(TEXT_DOMAIN, "cannot share '%s': %s"),
zfs_get_name(zhp), sa_errorstr(ret));
return (-1);
}
for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) {
/*
* Return success if there are no share options.
*/
if (zfs_prop_get(zhp, proto_table[*curr_proto].p_prop,
shareopts, sizeof (shareopts), &sourcetype, sourcestr,
ZFS_MAXPROPLEN, B_FALSE) != 0 ||
strcmp(shareopts, "off") == 0)
continue;
/*
* If the 'zoned' property is set, then zfs_is_mountable()
* will have already bailed out if we are in the global zone.
* But local zones cannot be NFS servers, so we ignore it for
* local zones as well.
*/
if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED))
continue;
share = sa_find_share(hdl->libzfs_sharehdl, mountpoint);
if (share == NULL) {
/*
* This may be a new file system that was just
* created so isn't in the internal cache
* (second time through). Rather than
* reloading the entire configuration, we can
* assume ZFS has done the checking and it is
* safe to add this to the internal
* configuration.
*/
if (sa_zfs_process_share(hdl->libzfs_sharehdl,
NULL, NULL, mountpoint,
proto_table[*curr_proto].p_name, sourcetype,
shareopts, sourcestr, zhp->zfs_name) != SA_OK) {
(void) zfs_error_fmt(hdl,
proto_table[*curr_proto].p_share_err,
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
zfs_get_name(zhp));
return (-1);
}
hdl->libzfs_shareflags |= ZFSSHARE_MISS;
share = sa_find_share(hdl->libzfs_sharehdl,
mountpoint);
}
if (share != NULL) {
int err;
err = sa_enable_share(share,
proto_table[*curr_proto].p_name);
if (err != SA_OK) {
(void) zfs_error_fmt(hdl,
proto_table[*curr_proto].p_share_err,
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
zfs_get_name(zhp));
return (-1);
}
} else {
(void) zfs_error_fmt(hdl,
proto_table[*curr_proto].p_share_err,
dgettext(TEXT_DOMAIN, "cannot share '%s'"),
zfs_get_name(zhp));
return (-1);
}
}
return (0);
}
static int
change_one(zfs_handle_t *zhp, void *data)
{
prop_changelist_t *clp = data;
char property[ZFS_MAXPROPLEN];
char where[64];
prop_changenode_t *cn;
zprop_source_t sourcetype;
zprop_source_t share_sourcetype;
/*
* We only want to unmount/unshare those filesystems that may inherit
* from the target filesystem. If we find any filesystem with a
* locally set mountpoint, we ignore any children since changing the
* property will not affect them. If this is a rename, we iterate
* over all children regardless, since we need them unmounted in
* order to do the rename. Also, if this is a volume and we're doing
* a rename, then always add it to the changelist.
*/
if (!(ZFS_IS_VOLUME(zhp) && clp->cl_realprop == ZFS_PROP_NAME) &&
zfs_prop_get(zhp, clp->cl_prop, property,
sizeof (property), &sourcetype, where, sizeof (where),
B_FALSE) != 0) {
zfs_close(zhp);
return (0);
}
/*
* If we are "watching" sharenfs or sharesmb
* then check out the companion property which is tracked
* in cl_shareprop
*/
if (clp->cl_shareprop != ZPROP_INVAL &&
zfs_prop_get(zhp, clp->cl_shareprop, property,
sizeof (property), &share_sourcetype, where, sizeof (where),
B_FALSE) != 0) {
zfs_close(zhp);
return (0);
}
if (clp->cl_alldependents || clp->cl_allchildren ||
sourcetype == ZPROP_SRC_DEFAULT ||
sourcetype == ZPROP_SRC_INHERITED ||
(clp->cl_shareprop != ZPROP_INVAL &&
(share_sourcetype == ZPROP_SRC_DEFAULT ||
share_sourcetype == ZPROP_SRC_INHERITED))) {
if ((cn = zfs_alloc(zfs_get_handle(zhp),
sizeof (prop_changenode_t))) == NULL) {
zfs_close(zhp);
return (-1);
}
cn->cn_handle = zhp;
cn->cn_mounted = (clp->cl_gflags & CL_GATHER_MOUNT_ALWAYS) ||
zfs_is_mounted(zhp, NULL);
cn->cn_shared = zfs_is_shared(zhp);
cn->cn_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
cn->cn_needpost = B_TRUE;
/* Indicate if any child is exported to a local zone. */
if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
clp->cl_haszonedchild = B_TRUE;
uu_list_node_init(cn, &cn->cn_listnode, clp->cl_pool);
if (clp->cl_sorted) {
uu_list_index_t idx;
(void) uu_list_find(clp->cl_list, cn, NULL,
&idx);
uu_list_insert(clp->cl_list, cn, idx);
} else {
/*
* Add this child to beginning of the list. Children
* below this one in the hierarchy will get added above
* this one in the list. This produces a list in
* reverse dataset name order.
* This is necessary when the original mountpoint
* is legacy or none.
*/
verify(uu_list_insert_before(clp->cl_list,
uu_list_first(clp->cl_list), cn) == 0);
}
if (!clp->cl_alldependents)
return (zfs_iter_children(zhp, change_one, data));
} else {
zfs_close(zhp);
}
return (0);
}
