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 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);
}
/*
* 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);
}
