X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=libbtrfsutil%2Fbtrfsutil.h;h=6d655f498b8b5a761ea5b87a8bdd5dd1e582e12e;hb=9708f0d54e0381017114c0a4ca1f48e7aa8a8bbc;hp=09a71c32fe842b3ed12a4451b91cf6f14b9a031f;hpb=0b8512b7f5a6106efcab371471c472572a55367e;p=platform%2Fupstream%2Fbtrfs-progs.git

diff --git a/libbtrfsutil/btrfsutil.h b/libbtrfsutil/btrfsutil.h
index 09a71c3..6d655f4 100644
--- a/libbtrfsutil/btrfsutil.h
+++ b/libbtrfsutil/btrfsutil.h
@@ -391,6 +391,98 @@ enum btrfs_util_error btrfs_util_create_subvolume_fd(int parent_fd,
 						     uint64_t *async_transid,
 						     struct btrfs_util_qgroup_inherit *qgroup_inherit);
 
+/**
+ * BTRFS_UTIL_CREATE_SNAPSHOT_RECURSIVE - Also snapshot subvolumes beneath the
+ * source subvolume onto the same location on the new snapshot.
+ *
+ * Note that this is currently implemented in userspace non-atomically. Because
+ * it modifies the newly-created snapshot, it cannot be combined with
+ * %BTRFS_UTIL_CREATE_SNAPSHOT_READ_ONLY. It requires appropriate privilege
+ * (CAP_SYS_ADMIN).
+ */
+#define BTRFS_UTIL_CREATE_SNAPSHOT_RECURSIVE (1 << 0)
+/**
+ * BTRFS_UTIL_CREATE_SNAPSHOT_READ_ONLY - Create a read-only snapshot.
+ */
+#define BTRFS_UTIL_CREATE_SNAPSHOT_READ_ONLY (1 << 1)
+#define BTRFS_UTIL_CREATE_SNAPSHOT_MASK ((1 << 2) - 1)
+
+/**
+ * btrfs_util_create_snapshot() - Create a new snapshot from a source subvolume
+ * path.
+ * @source: Path of the existing subvolume to snapshot.
+ * @path: Where to create the snapshot.
+ * @flags: Bitmask of BTRFS_UTIL_CREATE_SNAPSHOT_* flags.
+ * @async_transid: See btrfs_util_create_subvolume(). If
+ * %BTRFS_UTIL_CREATE_SNAPSHOT_RECURSIVE was in @flags, then this will contain
+ * the largest transaction ID of all created subvolumes.
+ * @qgroup_inherit: See btrfs_util_create_subvolume().
+ *
+ * Return: %BTRFS_UTIL_OK on success, non-zero error code on failure.
+ */
+enum btrfs_util_error btrfs_util_create_snapshot(const char *source,
+						 const char *path, int flags,
+						 uint64_t *async_transid,
+						 struct btrfs_util_qgroup_inherit *qgroup_inherit);
+
+/**
+ * btrfs_util_create_snapshot_fd() - See btrfs_util_create_snapshot().
+ */
+enum btrfs_util_error btrfs_util_create_snapshot_fd(int fd, const char *path,
+						    int flags,
+						    uint64_t *async_transid,
+						    struct btrfs_util_qgroup_inherit *qgroup_inherit);
+
+/**
+ * btrfs_util_create_snapshot_fd2() - Create a new snapshot from a source
+ * subvolume file descriptor and a target parent file descriptor and name.
+ * @fd: File descriptor of the existing subvolume to snapshot.
+ * @parent_fd: File descriptor of the parent directory where the snapshot should
+ * be created.
+ * @name: Name of the snapshot to create.
+ * @flags: See btrfs_util_create_snapshot().
+ * @async_transid: See btrfs_util_create_snapshot().
+ * @qgroup_inherit: See btrfs_util_create_snapshot().
+ */
+enum btrfs_util_error btrfs_util_create_snapshot_fd2(int fd, int parent_fd,
+						     const char *name,
+						     int flags,
+						     uint64_t *async_transid,
+						     struct btrfs_util_qgroup_inherit *qgroup_inherit);
+
+/**
+ * BTRFS_UTIL_DELETE_SUBVOLUME_RECURSIVE - Delete subvolumes beneath the given
+ * subvolume before attempting to delete the given subvolume.
+ *
+ * If this flag is not used, deleting a subvolume with child subvolumes is an
+ * error. Note that this is currently implemented in userspace non-atomically.
+ * It requires appropriate privilege (CAP_SYS_ADMIN).
+ */
+#define BTRFS_UTIL_DELETE_SUBVOLUME_RECURSIVE (1 << 0)
+#define BTRFS_UTIL_DELETE_SUBVOLUME_MASK ((1 << 1) - 1)
+
+/**
+ * btrfs_util_delete_subvolume() - Delete a subvolume or snapshot.
+ * @path: Path of the subvolume to delete.
+ * @flags: Bitmask of BTRFS_UTIL_DELETE_SUBVOLUME_* flags.
+ *
+ * Return: %BTRFS_UTIL_OK on success, non-zero error code on failure.
+ */
+enum btrfs_util_error btrfs_util_delete_subvolume(const char *path, int flags);
+
+/**
+ * btrfs_util_delete_subvolume_fd() - Delete a subvolume or snapshot given its
+ * parent and name.
+ * @parent_fd: File descriptor of the subvolume's parent directory.
+ * @name: Name of the subvolume.
+ * @flags: See btrfs_util_delete_subvolume().
+ *
+ * Return: %BTRFS_UTIL_OK on success, non-zero error code on failure.
+ */
+enum btrfs_util_error btrfs_util_delete_subvolume_fd(int parent_fd,
+						     const char *name,
+						     int flags);
+
 struct btrfs_util_subvolume_iterator;
 
 /**
@@ -489,6 +581,27 @@ enum btrfs_util_error btrfs_util_subvolume_iterator_next_info(struct btrfs_util_
 							      struct btrfs_util_subvolume_info *subvol);
 
 /**
+ * btrfs_util_deleted_subvolumes() - Get a list of subvolume which have been
+ * deleted but not yet cleaned up.
+ * @path: Path on a Btrfs filesystem.
+ * @ids: Returned array of subvolume IDs.
+ * @n: Returned number of IDs in the @ids array.
+ *
+ * This requires appropriate privilege (CAP_SYS_ADMIN).
+ *
+ * Return: %BTRFS_UTIL_OK on success, non-zero error code on failure.
+ */
+enum btrfs_util_error btrfs_util_deleted_subvolumes(const char *path,
+						    uint64_t **ids,
+						    size_t *n);
+
+/**
+ * btrfs_util_deleted_subvolumes_fd() - See btrfs_util_deleted_subvolumes().
+ */
+enum btrfs_util_error btrfs_util_deleted_subvolumes_fd(int fd, uint64_t **ids,
+						       size_t *n);
+
+/**
  * btrfs_util_create_qgroup_inherit() - Create a qgroup inheritance specifier
  * for btrfs_util_create_subvolume() or btrfs_util_create_snapshot().
  * @flags: Must be zero.