Ejemplo n.º 1
0
int
lzc_change_key(const char *fsname, uint64_t crypt_cmd, nvlist_t *props,
    uint8_t *wkeydata, uint_t wkeylen)
{
	int error;
	nvlist_t *ioc_args = fnvlist_alloc();
	nvlist_t *hidden_args = NULL;

	fnvlist_add_uint64(ioc_args, "crypt_cmd", crypt_cmd);

	if (wkeydata != NULL) {
		hidden_args = fnvlist_alloc();
		fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata,
		    wkeylen);
		fnvlist_add_nvlist(ioc_args, ZPOOL_HIDDEN_ARGS, hidden_args);
	}

	if (props != NULL)
		fnvlist_add_nvlist(ioc_args, "props", props);

	error = lzc_ioctl(ZFS_IOC_CHANGE_KEY, fsname, ioc_args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(ioc_args);
	return (error);
}
Ejemplo n.º 2
0
/*
 * "from" can be NULL, a snapshot, or a bookmark.
 *
 * If from is NULL, a full (non-incremental) stream will be estimated.  This
 * is calculated very efficiently.
 *
 * If from is a snapshot, lzc_send_space uses the deadlists attached to
 * each snapshot to efficiently estimate the stream size.
 *
 * If from is a bookmark, the indirect blocks in the destination snapshot
 * are traversed, looking for blocks with a birth time since the creation TXG of
 * the snapshot this bookmark was created from.  This will result in
 * significantly more I/O and be less efficient than a send space estimation on
 * an equivalent snapshot.
 */
int
lzc_send_space(const char *snapname, const char *from,
    enum lzc_send_flags flags, uint64_t *spacep)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;

	args = fnvlist_alloc();
	if (from != NULL)
		fnvlist_add_string(args, "from", from);
	if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
		fnvlist_add_boolean(args, "largeblockok");
	if (flags & LZC_SEND_FLAG_EMBED_DATA)
		fnvlist_add_boolean(args, "embedok");
	if (flags & LZC_SEND_FLAG_COMPRESS)
		fnvlist_add_boolean(args, "compressok");
	if (flags & LZC_SEND_FLAG_RAW)
		fnvlist_add_boolean(args, "rawok");
	err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
	nvlist_free(args);
	if (err == 0)
		*spacep = fnvlist_lookup_uint64(result, "space");
	nvlist_free(result);
	return (err);
}
Ejemplo n.º 3
0
int
lzc_send_resume(const char *snapname, const char *from, int fd,
    enum lzc_send_flags flags, uint64_t resumeobj, uint64_t resumeoff)
{
	nvlist_t *args;
	int err;

	args = fnvlist_alloc();
	fnvlist_add_int32(args, "fd", fd);
	if (from != NULL)
		fnvlist_add_string(args, "fromsnap", from);
	if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
		fnvlist_add_boolean(args, "largeblockok");
	if (flags & LZC_SEND_FLAG_EMBED_DATA)
		fnvlist_add_boolean(args, "embedok");
	if (flags & LZC_SEND_FLAG_COMPRESS)
		fnvlist_add_boolean(args, "compressok");
	if (flags & LZC_SEND_FLAG_RAW)
		fnvlist_add_boolean(args, "rawok");
	if (resumeobj != 0 || resumeoff != 0) {
		fnvlist_add_uint64(args, "resume_object", resumeobj);
		fnvlist_add_uint64(args, "resume_offset", resumeoff);
	}
	err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
	nvlist_free(args);
	return (err);
}
Ejemplo n.º 4
0
/*
 * "from" can be NULL, a snapshot, or a bookmark.
 *
 * If from is NULL, a full (non-incremental) stream will be estimated.  This
 * is calculated very efficiently.
 *
 * If from is a snapshot, lzc_send_space uses the deadlists attached to
 * each snapshot to efficiently estimate the stream size.
 *
 * If from is a bookmark, the indirect blocks in the destination snapshot
 * are traversed, looking for blocks with a birth time since the creation TXG of
 * the snapshot this bookmark was created from.  This will result in
 * significantly more I/O and be less efficient than a send space estimation on
 * an equivalent snapshot. This process is also used if redact_snaps is
 * non-null.
 */
int
lzc_send_space_resume_redacted(const char *snapname, const char *from,
    enum lzc_send_flags flags, uint64_t resumeobj, uint64_t resumeoff,
    uint64_t resume_bytes, const char *redactbook, int fd, uint64_t *spacep)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;

	args = fnvlist_alloc();
	if (from != NULL)
		fnvlist_add_string(args, "from", from);
	if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
		fnvlist_add_boolean(args, "largeblockok");
	if (flags & LZC_SEND_FLAG_EMBED_DATA)
		fnvlist_add_boolean(args, "embedok");
	if (flags & LZC_SEND_FLAG_COMPRESS)
		fnvlist_add_boolean(args, "compressok");
	if (resumeobj != 0 || resumeoff != 0) {
		fnvlist_add_uint64(args, "resume_object", resumeobj);
		fnvlist_add_uint64(args, "resume_offset", resumeoff);
		fnvlist_add_uint64(args, "bytes", resume_bytes);
	}
	if (redactbook != NULL)
		fnvlist_add_string(args, "redactbook", redactbook);
	if (fd != -1)
		fnvlist_add_int32(args, "fd", fd);

	err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
	nvlist_free(args);
	if (err == 0)
		*spacep = fnvlist_lookup_uint64(result, "space");
	nvlist_free(result);
	return (err);
}
Ejemplo n.º 5
0
/*
 * Creates snapshots.
 *
 * The keys in the snaps nvlist are the snapshots to be created.
 * They must all be in the same pool.
 *
 * The props nvlist is properties to set.  Currently only user properties
 * are supported.  { user:prop_name -> string value }
 *
 * The returned results nvlist will have an entry for each snapshot that failed.
 * The value will be the (int32) error code.
 *
 * The return value will be 0 if all snapshots were created, otherwise it will
 * be the errno of a (unspecified) snapshot that failed.
 */
int
lzc_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t **errlist)
{
	nvpair_t *elem;
	nvlist_t *args;
	int error;
	char pool[MAXNAMELEN];

	*errlist = NULL;

	/* determine the pool name */
	elem = nvlist_next_nvpair(snaps, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "snaps", snaps);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);

	error = lzc_ioctl(ZFS_IOC_SNAPSHOT, pool, args, errlist);
	nvlist_free(args);

	return (error);
}
Ejemplo n.º 6
0
int
lzc_snaprange_space(const char *firstsnap, const char *lastsnap,
    uint64_t *usedp)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;
	char fs[MAXNAMELEN];
	char *atp;

	/* determine the fs name */
	(void) strlcpy(fs, firstsnap, sizeof (fs));
	atp = strchr(fs, '@');
	if (atp == NULL)
		return (EINVAL);
	*atp = '\0';

	args = fnvlist_alloc();
	fnvlist_add_string(args, "firstsnap", firstsnap);

	err = lzc_ioctl(ZFS_IOC_SPACE_SNAPS, lastsnap, args, &result);
	nvlist_free(args);
	if (err == 0)
		*usedp = fnvlist_lookup_uint64(result, "used");
	fnvlist_free(result);

	return (err);
}
Ejemplo n.º 7
0
/*
 * Destroys snapshots.
 *
 * The keys in the snaps nvlist are the snapshots to be destroyed.
 * They must all be in the same pool.
 *
 * Snapshots that do not exist will be silently ignored.
 *
 * If 'defer' is not set, and a snapshot has user holds or clones, the
 * destroy operation will fail and none of the snapshots will be
 * destroyed.
 *
 * If 'defer' is set, and a snapshot has user holds or clones, it will be
 * marked for deferred destruction, and will be destroyed when the last hold
 * or clone is removed/destroyed.
 *
 * The return value will be 0 if all snapshots were destroyed (or marked for
 * later destruction if 'defer' is set) or didn't exist to begin with.
 *
 * Otherwise the return value will be the errno of a (unspecified) snapshot
 * that failed, no snapshots will be destroyed, and the errlist will have an
 * entry for each snapshot that failed.  The value in the errlist will be
 * the (int32) error code.
 */
int
lzc_destroy_snaps(nvlist_t *snaps, boolean_t defer, nvlist_t **errlist)
{
	nvpair_t *elem;
	nvlist_t *args;
	int error;
	char pool[MAXNAMELEN];

	/* determine the pool name */
	elem = nvlist_next_nvpair(snaps, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "snaps", snaps);
	if (defer)
		fnvlist_add_boolean(args, "defer");

	error = lzc_ioctl(ZFS_IOC_DESTROY_SNAPS, pool, args, errlist);
	nvlist_free(args);

	return (error);
}
Ejemplo n.º 8
0
int
lzc_remap(const char *fsname)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	error = lzc_ioctl(ZFS_IOC_REMAP, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 9
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/*
 * Retrieve list of user holds on the specified snapshot.
 *
 * On success, *holdsp will be set to a nvlist which the caller must free.
 * The keys are the names of the holds, and the value is the creation time
 * of the hold (uint64) in seconds since the epoch.
 */
int
lzc_get_holds(const char *snapname, nvlist_t **holdsp)
{
	int error;
	nvlist_t *innvl = fnvlist_alloc();
	error = lzc_ioctl(ZFS_IOC_GET_HOLDS, snapname, innvl, holdsp);
	fnvlist_free(innvl);
	return (error);
}
Ejemplo n.º 10
0
/*
 * Create a redaction bookmark named bookname by redacting snapshot with respect
 * to all the snapshots in snapnv.
 */
int
lzc_redact(const char *snapshot, const char *bookname, nvlist_t *snapnv)
{
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_string(args, "bookname", bookname);
	fnvlist_add_nvlist(args, "snapnv", snapnv);
	int error = lzc_ioctl(ZFS_IOC_REDACT, snapshot, args, NULL);
	fnvlist_free(args);
	return (error);
}
Ejemplo n.º 11
0
/*
 * Get bookmark properties.
 *
 * Given a bookmark's full name, retrieve all properties for the bookmark.
 *
 * The format of the returned property list is as follows:
 * {
 *     <name of property> -> {
 *         "value" -> uint64
 *     }
 *     ...
 *     "redact_snaps" -> {
 *         "value" -> uint64 array
 * }
 */
int
lzc_get_bookmark_props(const char *bookmark, nvlist_t **props)
{
	int error;

	nvlist_t *innvl = fnvlist_alloc();
	error = lzc_ioctl(ZFS_IOC_GET_BOOKMARK_PROPS, bookmark, innvl, props);
	fnvlist_free(innvl);

	return (error);
}
Ejemplo n.º 12
0
int
lzc_reopen(const char *pool_name, boolean_t scrub_restart)
{
	nvlist_t *args = fnvlist_alloc();
	int error;

	fnvlist_add_boolean_value(args, "scrub_restart", scrub_restart);

	error = lzc_ioctl(ZFS_IOC_POOL_REOPEN, pool_name, args, NULL);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 13
0
int
lzc_create(const char *fsname, dmu_objset_type_t type, nvlist_t *props)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_int32(args, "type", type);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);
	error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 14
0
int
lzc_clone(const char *fsname, const char *origin,
    nvlist_t *props)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_string(args, "origin", origin);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);
	error = lzc_ioctl(ZFS_IOC_CLONE, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 15
0
/*
 * If fromsnap is NULL, a full (non-incremental) stream will be sent.
 */
int
lzc_send(const char *snapname, const char *fromsnap, int fd)
{
	nvlist_t *args;
	int err;

	args = fnvlist_alloc();
	fnvlist_add_int32(args, "fd", fd);
	if (fromsnap != NULL)
		fnvlist_add_string(args, "fromsnap", fromsnap);
	err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
	nvlist_free(args);
	return (err);
}
Ejemplo n.º 16
0
/*
 * Roll back this filesystem or volume to the specified snapshot,
 * if possible.
 *
 * Return 0 on success or an errno on failure.
 */
int
lzc_rollback_to(const char *fsname, const char *snapname)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;

	args = fnvlist_alloc();
	fnvlist_add_string(args, "target", snapname);
	err = lzc_ioctl(ZFS_IOC_ROLLBACK, fsname, args, &result);
	nvlist_free(args);
	nvlist_free(result);
	return (err);
}
Ejemplo n.º 17
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/*
 * Release "user holds" on snapshots.  If the snapshot has been marked for
 * deferred destroy (by lzc_destroy_snaps(defer=B_TRUE)), it does not have
 * any clones, and all the user holds are removed, then the snapshot will be
 * destroyed.
 *
 * The keys in the nvlist are snapshot names.
 * The snapshots must all be in the same pool.
 * The value is a nvlist whose keys are the holds to remove.
 *
 * Holds which failed to release because they didn't exist will have an entry
 * added to errlist, but will not cause an overall failure.
 *
 * The return value will be 0 if the nvl holds was empty or all holds that
 * existed, were successfully removed.
 *
 * Otherwise the return value will be the errno of a (unspecified) hold that
 * failed to release and no holds will be released.
 *
 * In all cases the errlist will have an entry for each hold that failed to
 * to release.
 */
int
lzc_release(nvlist_t *holds, nvlist_t **errlist)
{
	char pool[MAXNAMELEN];
	nvpair_t *elem;

	/* determine the pool name */
	elem = nvlist_next_nvpair(holds, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	return (lzc_ioctl(ZFS_IOC_RELEASE, pool, holds, errlist));
}
Ejemplo n.º 18
0
/*
 * Discard the checkpoint from the specified pool.
 *
 * If this function returns 0 the checkpoint was successfully discarded.
 *
 * This method may also return:
 *
 * ZFS_ERR_NO_CHECKPOINT
 * 	The pool does not have a checkpoint.
 *
 * ZFS_ERR_DISCARDING_CHECKPOINT
 * 	ZFS is already in the middle of discarding the checkpoint.
 */
int
lzc_pool_checkpoint_discard(const char *pool)
{
	int error;

	nvlist_t *result = NULL;
	nvlist_t *args = fnvlist_alloc();

	error = lzc_ioctl(ZFS_IOC_POOL_DISCARD_CHECKPOINT, pool, args, &result);

	fnvlist_free(args);
	fnvlist_free(result);

	return (error);
}
Ejemplo n.º 19
0
/*
 * Roll back this filesystem or volume to its most recent snapshot.
 * If snapnamebuf is not NULL, it will be filled in with the name
 * of the most recent snapshot.
 *
 * Return 0 on success or an errno on failure.
 */
int
lzc_rollback(const char *fsname, char *snapnamebuf, int snapnamelen)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;

	args = fnvlist_alloc();
	err = lzc_ioctl(ZFS_IOC_ROLLBACK, fsname, args, &result);
	nvlist_free(args);
	if (err == 0 && snapnamebuf != NULL) {
		const char *snapname = fnvlist_lookup_string(result, "target");
		(void) strlcpy(snapnamebuf, snapname, snapnamelen);
	}
	return (err);
}
Ejemplo n.º 20
0
/*
 * "from" can be NULL, a snapshot, or a bookmark.
 *
 * If from is NULL, a full (non-incremental) stream will be estimated.  This
 * is calculated very efficiently.
 *
 * If from is a snapshot, lzc_send_space uses the deadlists attached to
 * each snapshot to efficiently estimate the stream size.
 *
 * If from is a bookmark, the indirect blocks in the destination snapshot
 * are traversed, looking for blocks with a birth time since the creation TXG of
 * the snapshot this bookmark was created from.  This will result in
 * significantly more I/O and be less efficient than a send space estimation on
 * an equivalent snapshot.
 */
int
lzc_send_space(const char *snapname, const char *from, uint64_t *spacep)
{
	nvlist_t *args;
	nvlist_t *result;
	int err;

	args = fnvlist_alloc();
	if (from != NULL)
		fnvlist_add_string(args, "from", from);
	err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
	nvlist_free(args);
	if (err == 0)
		*spacep = fnvlist_lookup_uint64(result, "space");
	nvlist_free(result);
	return (err);
}
Ejemplo n.º 21
0
static int
lzc_channel_program_impl(const char *pool, const char *program, boolean_t sync,
    uint64_t instrlimit, uint64_t memlimit, nvlist_t *argnvl, nvlist_t **outnvl)
{
	int error;
	nvlist_t *args;

	args = fnvlist_alloc();
	fnvlist_add_string(args, ZCP_ARG_PROGRAM, program);
	fnvlist_add_nvlist(args, ZCP_ARG_ARGLIST, argnvl);
	fnvlist_add_boolean_value(args, ZCP_ARG_SYNC, sync);
	fnvlist_add_uint64(args, ZCP_ARG_INSTRLIMIT, instrlimit);
	fnvlist_add_uint64(args, ZCP_ARG_MEMLIMIT, memlimit);
	error = lzc_ioctl(ZFS_IOC_CHANNEL_PROGRAM, pool, args, outnvl);
	fnvlist_free(args);

	return (error);
}
Ejemplo n.º 22
0
/*
 * Destroys bookmarks.
 *
 * The keys in the bmarks nvlist are the bookmarks to be destroyed.
 * They must all be in the same pool.  Bookmarks are specified as
 * <fs>#<bmark>.
 *
 * Bookmarks that do not exist will be silently ignored.
 *
 * The return value will be 0 if all bookmarks that existed were destroyed.
 *
 * Otherwise the return value will be the errno of a (undetermined) bookmark
 * that failed, no bookmarks will be destroyed, and the errlist will have an
 * entry for each bookmarks that failed.  The value in the errlist will be
 * the (int32) error code.
 */
int
lzc_destroy_bookmarks(nvlist_t *bmarks, nvlist_t **errlist)
{
	nvpair_t *elem;
	int error;
	char pool[MAXNAMELEN];

	/* determine the pool name */
	elem = nvlist_next_nvpair(bmarks, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/#")] = '\0';

	error = lzc_ioctl(ZFS_IOC_DESTROY_BOOKMARKS, pool, bmarks, errlist);

	return (error);
}
Ejemplo n.º 23
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/*
 * Creates bookmarks.
 *
 * The bookmarks nvlist maps from name of the bookmark (e.g. "pool/fs#bmark") to
 * the name of the snapshot (e.g. "pool/fs@snap").  All the bookmarks and
 * snapshots must be in the same pool.
 *
 * The returned results nvlist will have an entry for each bookmark that failed.
 * The value will be the (int32) error code.
 *
 * The return value will be 0 if all bookmarks were created, otherwise it will
 * be the errno of a (undetermined) bookmarks that failed.
 */
int
lzc_bookmark(nvlist_t *bookmarks, nvlist_t **errlist)
{
	nvpair_t *elem;
	int error;
	char pool[ZFS_MAX_DATASET_NAME_LEN];

	/* determine the pool name */
	elem = nvlist_next_nvpair(bookmarks, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/#")] = '\0';

	error = lzc_ioctl(ZFS_IOC_BOOKMARK, pool, bookmarks, errlist);

	return (error);
}
Ejemplo n.º 24
0
/*
 * Generate a zfs send stream for the specified snapshot and write it to
 * the specified file descriptor.
 *
 * "snapname" is the full name of the snapshot to send (e.g. "pool/fs@snap")
 *
 * If "from" is NULL, a full (non-incremental) stream will be sent.
 * If "from" is non-NULL, it must be the full name of a snapshot or
 * bookmark to send an incremental from (e.g. "pool/fs@earlier_snap" or
 * "pool/fs#earlier_bmark").  If non-NULL, the specified snapshot or
 * bookmark must represent an earlier point in the history of "snapname").
 * It can be an earlier snapshot in the same filesystem or zvol as "snapname",
 * or it can be the origin of "snapname"'s filesystem, or an earlier
 * snapshot in the origin, etc.
 *
 * "fd" is the file descriptor to write the send stream to.
 *
 * If "flags" contains LZC_SEND_FLAG_LARGE_BLOCK, the stream is permitted
 * to contain DRR_WRITE records with drr_length > 128K, and DRR_OBJECT
 * records with drr_blksz > 128K.
 *
 * If "flags" contains LZC_SEND_FLAG_EMBED_DATA, the stream is permitted
 * to contain DRR_WRITE_EMBEDDED records with drr_etype==BP_EMBEDDED_TYPE_DATA,
 * which the receiving system must support (as indicated by support
 * for the "embedded_data" feature).
 */
int
lzc_send(const char *snapname, const char *from, int fd,
    enum lzc_send_flags flags)
{
	nvlist_t *args;
	int err;

	args = fnvlist_alloc();
	fnvlist_add_int32(args, "fd", fd);
	if (from != NULL)
		fnvlist_add_string(args, "fromsnap", from);
	if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
		fnvlist_add_boolean(args, "largeblockok");
	if (flags & LZC_SEND_FLAG_EMBED_DATA)
		fnvlist_add_boolean(args, "embedok");
	err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
	nvlist_free(args);
	return (err);
}
Ejemplo n.º 25
0
/*
 * Performs key management functions
 *
 * crypto_cmd should be a value from zfs_ioc_crypto_cmd_t. If the command
 * specifies to load or change a wrapping key, the key should be specified in
 * the hidden_args nvlist so that it is not logged
 */
int
lzc_load_key(const char *fsname, boolean_t noop, uint8_t *wkeydata,
    uint_t wkeylen)
{
	int error;
	nvlist_t *ioc_args;
	nvlist_t *hidden_args;

	if (wkeydata == NULL)
		return (EINVAL);

	ioc_args = fnvlist_alloc();
	hidden_args = fnvlist_alloc();
	fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata, wkeylen);
	fnvlist_add_nvlist(ioc_args, ZPOOL_HIDDEN_ARGS, hidden_args);
	if (noop)
		fnvlist_add_boolean(ioc_args, "noop");
	error = lzc_ioctl(ZFS_IOC_LOAD_KEY, fsname, ioc_args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(ioc_args);

	return (error);
}
Ejemplo n.º 26
0
int
lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props,
    uint8_t *wkeydata, uint_t wkeylen)
{
	int error;
	nvlist_t *hidden_args = NULL;
	nvlist_t *args = fnvlist_alloc();

	fnvlist_add_int32(args, "type", (dmu_objset_type_t)type);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);

	if (wkeydata != NULL) {
		hidden_args = fnvlist_alloc();
		fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata,
		    wkeylen);
		fnvlist_add_nvlist(args, ZPOOL_HIDDEN_ARGS, hidden_args);
	}

	error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 27
0
/*
 * Create "user holds" on snapshots.  If there is a hold on a snapshot,
 * the snapshot can not be destroyed.  (However, it can be marked for deletion
 * by lzc_destroy_snaps(defer=B_TRUE).)
 *
 * The keys in the nvlist are snapshot names.
 * The snapshots must all be in the same pool.
 * The value is the name of the hold (string type).
 *
 * If cleanup_fd is not -1, it must be the result of open("/dev/zfs", O_EXCL).
 * In this case, when the cleanup_fd is closed (including on process
 * termination), the holds will be released.  If the system is shut down
 * uncleanly, the holds will be released when the pool is next opened
 * or imported.
 *
 * Holds for snapshots which don't exist will be skipped and have an entry
 * added to errlist, but will not cause an overall failure.
 *
 * The return value will be 0 if all holds, for snapshots that existed,
 * were succesfully created.
 *
 * Otherwise the return value will be the errno of a (unspecified) hold that
 * failed and no holds will be created.
 *
 * In all cases the errlist will have an entry for each hold that failed
 * (name = snapshot), with its value being the error code (int32).
 */
int
lzc_hold(nvlist_t *holds, int cleanup_fd, nvlist_t **errlist)
{
	char pool[MAXNAMELEN];
	nvlist_t *args;
	nvpair_t *elem;
	int error;

	/* determine the pool name */
	elem = nvlist_next_nvpair(holds, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "holds", holds);
	if (cleanup_fd != -1)
		fnvlist_add_int32(args, "cleanup_fd", cleanup_fd);

	error = lzc_ioctl(ZFS_IOC_HOLD, pool, args, errlist);
	nvlist_free(args);
	return (error);
}
Ejemplo n.º 28
0
/*
 * Retrieve bookmarks.
 *
 * Retrieve the list of bookmarks for the given file system. The props
 * parameter is an nvlist of property names (with no values) that will be
 * returned for each bookmark.
 *
 * The following are valid properties on bookmarks, all of which are numbers
 * (represented as uint64 in the nvlist)
 *
 * "guid" - globally unique identifier of the snapshot it refers to
 * "createtxg" - txg when the snapshot it refers to was created
 * "creation" - timestamp when the snapshot it refers to was created
 *
 * The format of the returned nvlist as follows:
 * <short name of bookmark> -> {
 *     <name of property> -> {
 *         "value" -> uint64
 *     }
 *  }
 */
int
lzc_get_bookmarks(const char *fsname, nvlist_t *props, nvlist_t **bmarks)
{
	return (lzc_ioctl(ZFS_IOC_GET_BOOKMARKS, fsname, props, bmarks));
}
Ejemplo n.º 29
0
/*
 * Retrieve list of user holds on the specified snapshot.
 *
 * On success, *holdsp will be set to an nvlist which the caller must free.
 * The keys are the names of the holds, and the value is the creation time
 * of the hold (uint64) in seconds since the epoch.
 */
int
lzc_get_holds(const char *snapname, nvlist_t **holdsp)
{
	return (lzc_ioctl(ZFS_IOC_GET_HOLDS, snapname, NULL, holdsp));
}
Ejemplo n.º 30
0
/*
 * Linux adds ZFS_IOC_RECV_NEW for resumable and raw streams and preserves the
 * legacy ZFS_IOC_RECV user/kernel interface.  The new interface supports all
 * stream options but is currently only used for resumable streams.  This way
 * updated user space utilities will interoperate with older kernel modules.
 *
 * Non-Linux OpenZFS platforms have opted to modify the legacy interface.
 */
static int
recv_impl(const char *snapname, nvlist_t *recvdprops, nvlist_t *localprops,
    const char *origin, boolean_t force, boolean_t resumable, boolean_t raw,
    int input_fd, const dmu_replay_record_t *begin_record, int cleanup_fd,
    uint64_t *read_bytes, uint64_t *errflags, uint64_t *action_handle,
    nvlist_t **errors)
{
	dmu_replay_record_t drr;
	char fsname[MAXPATHLEN];
	char *atp;
	int error;

	ASSERT3S(g_refcount, >, 0);
	VERIFY3S(g_fd, !=, -1);

	/* Set 'fsname' to the name of containing filesystem */
	(void) strlcpy(fsname, snapname, sizeof (fsname));
	atp = strchr(fsname, '@');
	if (atp == NULL)
		return (EINVAL);
	*atp = '\0';

	/* If the fs does not exist, try its parent. */
	if (!lzc_exists(fsname)) {
		char *slashp = strrchr(fsname, '/');
		if (slashp == NULL)
			return (ENOENT);
		*slashp = '\0';
	}

	/*
	 * The begin_record is normally a non-byteswapped BEGIN record.
	 * For resumable streams it may be set to any non-byteswapped
	 * dmu_replay_record_t.
	 */
	if (begin_record == NULL) {
		error = recv_read(input_fd, &drr, sizeof (drr));
		if (error != 0)
			return (error);
	} else {
		drr = *begin_record;
	}

	if (resumable || raw) {
		nvlist_t *outnvl = NULL;
		nvlist_t *innvl = fnvlist_alloc();

		fnvlist_add_string(innvl, "snapname", snapname);

		if (recvdprops != NULL)
			fnvlist_add_nvlist(innvl, "props", recvdprops);

		if (localprops != NULL)
			fnvlist_add_nvlist(innvl, "localprops", localprops);

		if (origin != NULL && strlen(origin))
			fnvlist_add_string(innvl, "origin", origin);

		fnvlist_add_byte_array(innvl, "begin_record",
		    (uchar_t *)&drr, sizeof (drr));

		fnvlist_add_int32(innvl, "input_fd", input_fd);

		if (force)
			fnvlist_add_boolean(innvl, "force");

		if (resumable)
			fnvlist_add_boolean(innvl, "resumable");

		if (cleanup_fd >= 0)
			fnvlist_add_int32(innvl, "cleanup_fd", cleanup_fd);

		if (action_handle != NULL)
			fnvlist_add_uint64(innvl, "action_handle",
			    *action_handle);

		error = lzc_ioctl(ZFS_IOC_RECV_NEW, fsname, innvl, &outnvl);

		if (error == 0 && read_bytes != NULL)
			error = nvlist_lookup_uint64(outnvl, "read_bytes",
			    read_bytes);

		if (error == 0 && errflags != NULL)
			error = nvlist_lookup_uint64(outnvl, "error_flags",
			    errflags);

		if (error == 0 && action_handle != NULL)
			error = nvlist_lookup_uint64(outnvl, "action_handle",
			    action_handle);

		if (error == 0 && errors != NULL) {
			nvlist_t *nvl;
			error = nvlist_lookup_nvlist(outnvl, "errors", &nvl);
			if (error == 0)
				*errors = fnvlist_dup(nvl);
		}

		fnvlist_free(innvl);
		fnvlist_free(outnvl);
	} else {
		zfs_cmd_t zc = {"\0"};
		char *packed = NULL;
		size_t size;

		ASSERT3S(g_refcount, >, 0);

		(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_value));
		(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));

		if (recvdprops != NULL) {
			packed = fnvlist_pack(recvdprops, &size);
			zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed;
			zc.zc_nvlist_src_size = size;
		}

		if (localprops != NULL) {
			packed = fnvlist_pack(localprops, &size);
			zc.zc_nvlist_conf = (uint64_t)(uintptr_t)packed;
			zc.zc_nvlist_conf_size = size;
		}

		if (origin != NULL)
			(void) strlcpy(zc.zc_string, origin,
			    sizeof (zc.zc_string));

		ASSERT3S(drr.drr_type, ==, DRR_BEGIN);
		zc.zc_begin_record = drr.drr_u.drr_begin;
		zc.zc_guid = force;
		zc.zc_cookie = input_fd;
		zc.zc_cleanup_fd = -1;
		zc.zc_action_handle = 0;

		if (cleanup_fd >= 0)
			zc.zc_cleanup_fd = cleanup_fd;

		if (action_handle != NULL)
			zc.zc_action_handle = *action_handle;

		zc.zc_nvlist_dst_size = 128 * 1024;
		zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
		    malloc(zc.zc_nvlist_dst_size);

		error = ioctl(g_fd, ZFS_IOC_RECV, &zc);
		if (error != 0) {
			error = errno;
		} else {
			if (read_bytes != NULL)
				*read_bytes = zc.zc_cookie;

			if (errflags != NULL)
				*errflags = zc.zc_obj;

			if (action_handle != NULL)
				*action_handle = zc.zc_action_handle;

			if (errors != NULL)
				VERIFY0(nvlist_unpack(
				    (void *)(uintptr_t)zc.zc_nvlist_dst,
				    zc.zc_nvlist_dst_size, errors, KM_SLEEP));
		}

		if (packed != NULL)
			fnvlist_pack_free(packed, size);
		free((void *)(uintptr_t)zc.zc_nvlist_dst);
	}

	return (error);
}