/*
* path - path of the dataset
* count - return value of the number of snapshots for the dataset
*/
int
smbd_vss_get_count(const char *path, uint32_t *count)
{
char dataset[MAXPATHLEN];
libzfs_handle_t *libhd;
zfs_handle_t *zfshd;
smbd_vss_count_t vss_count;
bzero(&vss_count, sizeof (smbd_vss_count_t));
*count = 0;
if (smb_getdataset(path, dataset, MAXPATHLEN) != 0)
return (-1);
if ((libhd = libzfs_init()) == NULL)
return (-1);
if ((zfshd = zfs_open(libhd, dataset, ZFS_TYPE_DATASET)) == NULL) {
libzfs_fini(libhd);
return (-1);
}
(void) zfs_iter_snapshots(zfshd, smbd_vss_iterate_count,
(void *)&vss_count);
if (vss_count.vc_count > SMBD_VSS_SNAPSHOT_MAX)
vss_count.vc_count = SMBD_VSS_SNAPSHOT_MAX;
*count = vss_count.vc_count;
zfs_close(zfshd);
libzfs_fini(libhd);
return (0);
}
/*
* path - path of the dataset for the operation
* gmttoken - the @GMT token to be looked up
* toktime - time_t used if gmttoken == NULL
* snapname - the snapshot name to be returned [MAXPATHLEN]
*
* Here we are going to get the snapshot name from the @GMT token
* The snapname returned by ZFS is : <dataset name>@<snapshot name>
* So we are going to make sure there is the @ symbol in
* the right place and then just return the snapshot name
*/
int
smbd_vss_map_gmttoken(const char *path, char *gmttoken, time_t toktime,
char *snapname)
{
char dataset[MAXPATHLEN];
libzfs_handle_t *libhd;
zfs_handle_t *zfshd;
smbd_vss_map_gmttoken_t vss_map_gmttoken;
char *zsnap;
const char *lsnap;
struct tm tm;
if (gmttoken != NULL && *gmttoken == '@' &&
strptime(gmttoken, smbd_vss_gmttoken_fmt, &tm) != NULL) {
toktime = timegm(&tm);
}
vss_map_gmttoken.mg_snaptime = toktime;
vss_map_gmttoken.mg_snapname = snapname;
*snapname = '\0';
if (smb_getdataset(path, dataset, MAXPATHLEN) != 0)
return (-1);
if ((libhd = libzfs_init()) == NULL)
return (-1);
if ((zfshd = zfs_open(libhd, dataset, ZFS_TYPE_DATASET)) == NULL) {
libzfs_fini(libhd);
return (-1);
}
(void) zfs_iter_snapshots(zfshd, smbd_vss_iterate_map_gmttoken,
(void *)&vss_map_gmttoken);
/* compare the zfs snapshot name and the local snap name */
zsnap = snapname;
lsnap = dataset;
while ((*lsnap != '\0') && (*zsnap != '\0') && (*lsnap == *zsnap)) {
zsnap++;
lsnap++;
}
/* Now we should be passed the dataset name */
if ((*zsnap == '@') && (*lsnap == '\0')) {
zsnap++;
(void) strlcpy(snapname, zsnap, MAXPATHLEN);
} else {
*snapname = '\0';
}
zfs_close(zfshd);
libzfs_fini(libhd);
return (0);
}
/*
* 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);
}
void
smbd_vss_get_snapshots(const char *path, uint32_t count,
uint32_t *return_count, uint32_t *num_gmttokens, char **gmttokenp)
{
char dataset[MAXPATHLEN];
libzfs_handle_t *libhd;
zfs_handle_t *zfshd;
smbd_vss_get_uint64_date_t vss_uint64_date;
int i;
uint64_t *timep;
*return_count = 0;
*num_gmttokens = 0;
if (count == 0)
return;
if (count > SMBD_VSS_SNAPSHOT_MAX)
count = SMBD_VSS_SNAPSHOT_MAX;
vss_uint64_date.gd_count = count;
vss_uint64_date.gd_return_count = 0;
vss_uint64_date.gd_gmt_array = malloc(count * sizeof (uint64_t));
if (vss_uint64_date.gd_gmt_array == NULL)
return;
if (smb_getdataset(path, dataset, MAXPATHLEN) != 0) {
free(vss_uint64_date.gd_gmt_array);
return;
}
if ((libhd = libzfs_init()) == NULL) {
free(vss_uint64_date.gd_gmt_array);
return;
}
if ((zfshd = zfs_open(libhd, dataset, ZFS_TYPE_DATASET)) == NULL) {
free(vss_uint64_date.gd_gmt_array);
libzfs_fini(libhd);
return;
}
(void) zfs_iter_snapshots(zfshd, smbd_vss_iterate_get_uint64_date,
(void *)&vss_uint64_date);
*num_gmttokens = vss_uint64_date.gd_return_count;
*return_count = vss_uint64_date.gd_return_count;
/*
* Sort the list since neither zfs nor the client sorts it.
*/
qsort((char *)vss_uint64_date.gd_gmt_array,
vss_uint64_date.gd_return_count,
sizeof (uint64_t), smbd_vss_cmp_time);
timep = vss_uint64_date.gd_gmt_array;
for (i = 0; i < vss_uint64_date.gd_return_count; i++) {
*gmttokenp = malloc(SMB_VSS_GMT_SIZE);
if (*gmttokenp)
smbd_vss_time2gmttoken(*timep, *gmttokenp);
else
vss_uint64_date.gd_return_count = 0;
timep++;
gmttokenp++;
}
free(vss_uint64_date.gd_gmt_array);
zfs_close(zfshd);
libzfs_fini(libhd);
}
