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authorAndriy Gapon <avg@FreeBSD.org>2018-06-27 21:37:54 +0000
committerBrian Behlendorf <behlendorf1@llnl.gov>2018-12-14 17:49:45 +0000
commitdc1c630b8abf2db4ce78b583b441bd0c74f42936 (patch)
tree99b6a2915f304ad28532346c37190bcebfe7bc28
parenteff7d78f8a1e2c8c8a151b99ee7e66ad619b201c (diff)
downloadsrc-dc1c630b8abf2db4ce78b583b441bd0c74f42936.tar.gz
src-dc1c630b8abf2db4ce78b583b441bd0c74f42936.zip
OpenZFS 9630 - add lzc_rename and lzc_destroy to libzfs_core
Porting Notes: * Additional changes to recv_rename_impl() were required due to encryption code not being merged in OpenZFS yet. * libzfs_core python bindings (pyzfs) were updated to fully support both lzc_rename() and lzc_destroy() Authored by: Andriy Gapon <avg@FreeBSD.org> Reviewed by: Andy Stormont <astormont@racktopsystems.com> Reviewed by: Matt Ahrens <matt@delphix.com> Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com> Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Approved by: Dan McDonald <danmcd@joyent.com> Ported-by: loli10K <ezomori.nozomu@gmail.com> OpenZFS-issue: https://www.illumos.org/issues/9630 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/049ba63 Closes #8207
-rw-r--r--contrib/pyzfs/libzfs_core/_libzfs_core.py14
-rw-r--r--contrib/pyzfs/libzfs_core/bindings/libzfs_core.py4
-rw-r--r--include/libzfs_core.h3
-rw-r--r--lib/libzfs/libzfs_dataset.c24
-rw-r--r--lib/libzfs/libzfs_sendrecv.c40
-rw-r--r--lib/libzfs_core/libzfs_core.c24
-rw-r--r--module/zfs/zfs_ioctl.c22
-rw-r--r--tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c1
8 files changed, 81 insertions, 51 deletions
diff --git a/contrib/pyzfs/libzfs_core/_libzfs_core.py b/contrib/pyzfs/libzfs_core/_libzfs_core.py
index db207bf71e1f..157dc16e9a75 100644
--- a/contrib/pyzfs/libzfs_core/_libzfs_core.py
+++ b/contrib/pyzfs/libzfs_core/_libzfs_core.py
@@ -1605,7 +1605,6 @@ def lzc_pool_checkpoint_discard(name):
errors.lzc_pool_checkpoint_discard_translate_error(ret, name)
-@_uncommitted()
def lzc_rename(source, target):
'''
Rename the ZFS dataset.
@@ -1621,12 +1620,11 @@ def lzc_rename(source, target):
:raises FilesystemExists: if the target already exists.
:raises PoolsDiffer: if the source and target belong to different pools.
'''
- ret = _lib.lzc_rename(source, target, _ffi.NULL, _ffi.NULL)
+ ret = _lib.lzc_rename(source, target)
errors.lzc_rename_translate_error(ret, source, target)
-@_uncommitted()
-def lzc_destroy_one(name):
+def lzc_destroy(name):
'''
Destroy the ZFS dataset.
@@ -1635,16 +1633,10 @@ def lzc_destroy_one(name):
:raises NameTooLong: if the dataset name is too long.
:raises FilesystemNotFound: if the dataset does not exist.
'''
- ret = _lib.lzc_destroy_one(name, _ffi.NULL)
+ ret = _lib.lzc_destroy(name)
errors.lzc_destroy_translate_error(ret, name)
-# As the extended API is not committed yet, the names of the new interfaces
-# are not settled down yet.
-# lzc_destroy() might make more sense as we do not have lzc_create_one().
-lzc_destroy = lzc_destroy_one
-
-
@_uncommitted()
def lzc_inherit(name, prop):
'''
diff --git a/contrib/pyzfs/libzfs_core/bindings/libzfs_core.py b/contrib/pyzfs/libzfs_core/bindings/libzfs_core.py
index b69c8d779aa8..658394a3fe55 100644
--- a/contrib/pyzfs/libzfs_core/bindings/libzfs_core.py
+++ b/contrib/pyzfs/libzfs_core/bindings/libzfs_core.py
@@ -129,9 +129,9 @@ CDEF = """
int lzc_remap(const char *);
int lzc_pool_checkpoint(const char *);
int lzc_pool_checkpoint_discard(const char *);
+ int lzc_rename(const char *, const char *);
+ int lzc_destroy(const char *fsname);
- int lzc_rename(const char *, const char *, nvlist_t *, char **);
- int lzc_destroy_one(const char *fsname, nvlist_t *);
int lzc_inherit(const char *fsname, const char *name, nvlist_t *);
int lzc_set_props(const char *, nvlist_t *, nvlist_t *, nvlist_t *);
int lzc_list (const char *, nvlist_t *);
diff --git a/include/libzfs_core.h b/include/libzfs_core.h
index c22cbf18e2cc..f84270d7eb44 100644
--- a/include/libzfs_core.h
+++ b/include/libzfs_core.h
@@ -102,6 +102,9 @@ boolean_t lzc_exists(const char *);
int lzc_rollback(const char *, char *, int);
int lzc_rollback_to(const char *, const char *);
+int lzc_rename(const char *, const char *);
+int lzc_destroy(const char *);
+
int lzc_channel_program(const char *, const char *, uint64_t,
uint64_t, nvlist_t *, nvlist_t **);
int lzc_channel_program_nosync(const char *, const char *, uint64_t,
diff --git a/lib/libzfs/libzfs_dataset.c b/lib/libzfs/libzfs_dataset.c
index 237933c371f0..6445c9d7acf3 100644
--- a/lib/libzfs/libzfs_dataset.c
+++ b/lib/libzfs/libzfs_dataset.c
@@ -3856,32 +3856,34 @@ zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
int
zfs_destroy(zfs_handle_t *zhp, boolean_t defer)
{
- zfs_cmd_t zc = {"\0"};
+ int error;
+
+ if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT && defer)
+ return (EINVAL);
if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) {
nvlist_t *nv = fnvlist_alloc();
fnvlist_add_boolean(nv, zhp->zfs_name);
- int error = lzc_destroy_bookmarks(nv, NULL);
+ error = lzc_destroy_bookmarks(nv, NULL);
fnvlist_free(nv);
if (error != 0) {
- return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
+ return (zfs_standard_error_fmt(zhp->zfs_hdl, error,
dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
zhp->zfs_name));
}
return (0);
}
- (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
-
- if (ZFS_IS_VOLUME(zhp)) {
- zc.zc_objset_type = DMU_OST_ZVOL;
+ if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
+ nvlist_t *nv = fnvlist_alloc();
+ fnvlist_add_boolean(nv, zhp->zfs_name);
+ error = lzc_destroy_snaps(nv, defer, NULL);
+ fnvlist_free(nv);
} else {
- zc.zc_objset_type = DMU_OST_ZFS;
+ error = lzc_destroy(zhp->zfs_name);
}
- zc.zc_defer_destroy = defer;
- if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 &&
- errno != ENOENT) {
+ if (error != 0 && error != ENOENT) {
return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
zhp->zfs_name));
diff --git a/lib/libzfs/libzfs_sendrecv.c b/lib/libzfs/libzfs_sendrecv.c
index a05ccbe30960..ae24454d7c79 100644
--- a/lib/libzfs/libzfs_sendrecv.c
+++ b/lib/libzfs/libzfs_sendrecv.c
@@ -2294,7 +2294,7 @@ recv_open_grand_origin(zfs_handle_t *zhp)
}
static int
-recv_rename_impl(zfs_handle_t *zhp, zfs_cmd_t *zc)
+recv_rename_impl(zfs_handle_t *zhp, const char *name, const char *newname)
{
int err;
zfs_handle_t *ozhp = NULL;
@@ -2304,7 +2304,7 @@ recv_rename_impl(zfs_handle_t *zhp, zfs_cmd_t *zc)
* attempted to rename the dataset outside of its encryption root.
* Force the dataset to become an encryption root and try again.
*/
- err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_RENAME, &zc);
+ err = lzc_rename(name, newname);
if (err == EACCES) {
ozhp = recv_open_grand_origin(zhp);
if (ozhp == NULL) {
@@ -2317,7 +2317,7 @@ recv_rename_impl(zfs_handle_t *zhp, zfs_cmd_t *zc)
if (err != 0)
goto out;
- err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_RENAME, &zc);
+ err = lzc_rename(name, newname);
}
out:
@@ -2331,7 +2331,6 @@ recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
int baselen, char *newname, recvflags_t *flags)
{
static int seq;
- zfs_cmd_t zc = {"\0"};
int err;
prop_changelist_t *clp = NULL;
zfs_handle_t *zhp = NULL;
@@ -2351,19 +2350,13 @@ recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
if (err)
goto out;
- zc.zc_objset_type = DMU_OST_ZFS;
- (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
-
if (tryname) {
(void) strcpy(newname, tryname);
-
- (void) strlcpy(zc.zc_value, tryname, sizeof (zc.zc_value));
-
if (flags->verbose) {
(void) printf("attempting rename %s to %s\n",
- zc.zc_name, zc.zc_value);
+ name, newname);
}
- err = recv_rename_impl(zhp, &zc);
+ err = recv_rename_impl(zhp, name, newname);
if (err == 0)
changelist_rename(clp, name, tryname);
} else {
@@ -2375,13 +2368,12 @@ recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
(void) snprintf(newname, ZFS_MAX_DATASET_NAME_LEN,
"%.*srecv-%u-%u", baselen, name, getpid(), seq);
- (void) strlcpy(zc.zc_value, newname, sizeof (zc.zc_value));
if (flags->verbose) {
(void) printf("failed - trying rename %s to %s\n",
- zc.zc_name, zc.zc_value);
+ name, newname);
}
- err = recv_rename_impl(zhp, &zc);
+ err = recv_rename_impl(zhp, name, newname);
if (err == 0)
changelist_rename(clp, name, newname);
if (err && flags->verbose) {
@@ -2461,7 +2453,6 @@ static int
recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
char *newname, recvflags_t *flags)
{
- zfs_cmd_t zc = {"\0"};
int err = 0;
prop_changelist_t *clp;
zfs_handle_t *zhp;
@@ -2484,17 +2475,20 @@ recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
if (err)
return (err);
- zc.zc_objset_type = DMU_OST_ZFS;
- zc.zc_defer_destroy = defer;
- (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
-
if (flags->verbose)
- (void) printf("attempting destroy %s\n", zc.zc_name);
- err = ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc);
+ (void) printf("attempting destroy %s\n", name);
+ if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
+ nvlist_t *nv = fnvlist_alloc();
+ fnvlist_add_boolean(nv, name);
+ err = lzc_destroy_snaps(nv, defer, NULL);
+ fnvlist_free(nv);
+ } else {
+ err = lzc_destroy(name);
+ }
if (err == 0) {
if (flags->verbose)
(void) printf("success\n");
- changelist_remove(clp, zc.zc_name);
+ changelist_remove(clp, name);
}
(void) changelist_postfix(clp);
diff --git a/lib/libzfs_core/libzfs_core.c b/lib/libzfs_core/libzfs_core.c
index f24581db83e0..1baec04a4077 100644
--- a/lib/libzfs_core/libzfs_core.c
+++ b/lib/libzfs_core/libzfs_core.c
@@ -316,6 +316,30 @@ lzc_remap(const char *fsname)
return (error);
}
+int
+lzc_rename(const char *source, const char *target)
+{
+ zfs_cmd_t zc = { "\0" };
+ int error;
+ ASSERT3S(g_refcount, >, 0);
+ VERIFY3S(g_fd, !=, -1);
+ (void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name));
+ (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
+ error = ioctl(g_fd, ZFS_IOC_RENAME, &zc);
+ if (error != 0)
+ error = errno;
+ return (error);
+}
+int
+lzc_destroy(const char *fsname)
+{
+ int error;
+ nvlist_t *args = fnvlist_alloc();
+ error = lzc_ioctl(ZFS_IOC_DESTROY, fsname, args, NULL);
+ nvlist_free(args);
+ return (error);
+}
+
/*
* Creates snapshots.
*
diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
index 7c469246d98d..a71da2837472 100644
--- a/module/zfs/zfs_ioctl.c
+++ b/module/zfs/zfs_ioctl.c
@@ -3785,7 +3785,6 @@ zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl,
/*
* inputs:
* zc_name name of dataset to destroy
- * zc_objset_type type of objset
* zc_defer_destroy mark for deferred destroy
*
* outputs: none
@@ -3793,9 +3792,17 @@ zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl,
static int
zfs_ioc_destroy(zfs_cmd_t *zc)
{
+ objset_t *os;
+ dmu_objset_type_t ost;
int err;
- if (zc->zc_objset_type == DMU_OST_ZFS)
+ err = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (err != 0)
+ return (err);
+ ost = dmu_objset_type(os);
+ dmu_objset_rele(os, FTAG);
+
+ if (ost == DMU_OST_ZFS)
zfs_unmount_snap(zc->zc_name);
if (strchr(zc->zc_name, '@')) {
@@ -3917,8 +3924,11 @@ recursive_unmount(const char *fsname, void *arg)
static int
zfs_ioc_rename(zfs_cmd_t *zc)
{
+ objset_t *os;
+ dmu_objset_type_t ost;
boolean_t recursive = zc->zc_cookie & 1;
char *at;
+ int err;
/* "zfs rename" from and to ...%recv datasets should both fail */
zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
@@ -3928,6 +3938,12 @@ zfs_ioc_rename(zfs_cmd_t *zc)
strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%'))
return (SET_ERROR(EINVAL));
+ err = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (err != 0)
+ return (err);
+ ost = dmu_objset_type(os);
+ dmu_objset_rele(os, FTAG);
+
at = strchr(zc->zc_name, '@');
if (at != NULL) {
/* snaps must be in same fs */
@@ -3936,7 +3952,7 @@ zfs_ioc_rename(zfs_cmd_t *zc)
if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
return (SET_ERROR(EXDEV));
*at = '\0';
- if (zc->zc_objset_type == DMU_OST_ZFS) {
+ if (ost == DMU_OST_ZFS) {
error = dmu_objset_find(zc->zc_name,
recursive_unmount, at + 1,
recursive ? DS_FIND_CHILDREN : 0);
diff --git a/tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c b/tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c
index 3d5c7b64a20a..88a18d8f0f6a 100644
--- a/tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c
+++ b/tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c
@@ -650,7 +650,6 @@ zfs_destroy(const char *dataset)
(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
zc.zc_name[sizeof (zc.zc_name) - 1] = '\0';
- zc.zc_objset_type = DMU_OST_ZFS;
err = ioctl(zfs_fd, ZFS_IOC_DESTROY, &zc);
return (err == 0 ? 0 : errno);