diff options
Diffstat (limited to 'module/zfs/zfs_ioctl.c')
| -rw-r--r-- | module/zfs/zfs_ioctl.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c index 4fda36c7f..8cdfe31a2 100644 --- a/module/zfs/zfs_ioctl.c +++ b/module/zfs/zfs_ioctl.c @@ -35,6 +35,7 @@ * Copyright (c) 2016 Actifio, Inc. All rights reserved. * Copyright (c) 2017, loli10K <[email protected]>. All rights reserved. * Copyright (c) 2017 Datto Inc. + * Copyright 2017 RackTop Systems. */ /* @@ -4963,7 +4964,6 @@ zfs_ioc_pool_reopen(zfs_cmd_t *zc) /* * inputs: * zc_name name of filesystem - * zc_value name of origin snapshot * * outputs: * zc_string name of conflicting snapshot, if there is one @@ -4971,16 +4971,49 @@ zfs_ioc_pool_reopen(zfs_cmd_t *zc) static int zfs_ioc_promote(zfs_cmd_t *zc) { + dsl_pool_t *dp; + dsl_dataset_t *ds, *ods; + char origin[ZFS_MAX_DATASET_NAME_LEN]; char *cp; + int error; + + error = dsl_pool_hold(zc->zc_name, FTAG, &dp); + if (error != 0) + return (error); + + error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); + if (error != 0) { + dsl_pool_rele(dp, FTAG); + return (error); + } + + if (!dsl_dir_is_clone(ds->ds_dir)) { + dsl_dataset_rele(ds, FTAG); + dsl_pool_rele(dp, FTAG); + return (SET_ERROR(EINVAL)); + } + + error = dsl_dataset_hold_obj(dp, + dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); + if (error != 0) { + dsl_dataset_rele(ds, FTAG); + dsl_pool_rele(dp, FTAG); + return (error); + } + + dsl_dataset_name(ods, origin); + dsl_dataset_rele(ods, FTAG); + dsl_dataset_rele(ds, FTAG); + dsl_pool_rele(dp, FTAG); /* * We don't need to unmount *all* the origin fs's snapshots, but * it's easier. */ - cp = strchr(zc->zc_value, '@'); + cp = strchr(origin, '@'); if (cp) *cp = '\0'; - (void) dmu_objset_find(zc->zc_value, + (void) dmu_objset_find(origin, zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); } |