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-rw-r--r--fs/btrfs/send.h169
1 files changed, 103 insertions, 66 deletions
diff --git a/fs/btrfs/send.h b/fs/btrfs/send.h
index 08602fdd600a..4bb4e6a638cb 100644
--- a/fs/btrfs/send.h
+++ b/fs/btrfs/send.h
@@ -7,12 +7,19 @@
#ifndef BTRFS_SEND_H
#define BTRFS_SEND_H
-#include "ctree.h"
+#include <linux/types.h>
#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
-#define BTRFS_SEND_STREAM_VERSION 1
+#define BTRFS_SEND_STREAM_VERSION 2
-#define BTRFS_SEND_BUF_SIZE SZ_64K
+/*
+ * In send stream v1, no command is larger than 64K. In send stream v2, no limit
+ * should be assumed.
+ */
+#define BTRFS_SEND_BUF_SIZE_V1 SZ_64K
+
+struct inode;
+struct btrfs_ioctl_send_args;
enum btrfs_tlv_type {
BTRFS_TLV_U8,
@@ -46,87 +53,117 @@ struct btrfs_tlv_header {
/* commands */
enum btrfs_send_cmd {
- BTRFS_SEND_C_UNSPEC,
+ BTRFS_SEND_C_UNSPEC = 0,
/* Version 1 */
- BTRFS_SEND_C_SUBVOL,
- BTRFS_SEND_C_SNAPSHOT,
+ BTRFS_SEND_C_SUBVOL = 1,
+ BTRFS_SEND_C_SNAPSHOT = 2,
- BTRFS_SEND_C_MKFILE,
- BTRFS_SEND_C_MKDIR,
- BTRFS_SEND_C_MKNOD,
- BTRFS_SEND_C_MKFIFO,
- BTRFS_SEND_C_MKSOCK,
- BTRFS_SEND_C_SYMLINK,
+ BTRFS_SEND_C_MKFILE = 3,
+ BTRFS_SEND_C_MKDIR = 4,
+ BTRFS_SEND_C_MKNOD = 5,
+ BTRFS_SEND_C_MKFIFO = 6,
+ BTRFS_SEND_C_MKSOCK = 7,
+ BTRFS_SEND_C_SYMLINK = 8,
- BTRFS_SEND_C_RENAME,
- BTRFS_SEND_C_LINK,
- BTRFS_SEND_C_UNLINK,
- BTRFS_SEND_C_RMDIR,
+ BTRFS_SEND_C_RENAME = 9,
+ BTRFS_SEND_C_LINK = 10,
+ BTRFS_SEND_C_UNLINK = 11,
+ BTRFS_SEND_C_RMDIR = 12,
- BTRFS_SEND_C_SET_XATTR,
- BTRFS_SEND_C_REMOVE_XATTR,
+ BTRFS_SEND_C_SET_XATTR = 13,
+ BTRFS_SEND_C_REMOVE_XATTR = 14,
- BTRFS_SEND_C_WRITE,
- BTRFS_SEND_C_CLONE,
+ BTRFS_SEND_C_WRITE = 15,
+ BTRFS_SEND_C_CLONE = 16,
- BTRFS_SEND_C_TRUNCATE,
- BTRFS_SEND_C_CHMOD,
- BTRFS_SEND_C_CHOWN,
- BTRFS_SEND_C_UTIMES,
+ BTRFS_SEND_C_TRUNCATE = 17,
+ BTRFS_SEND_C_CHMOD = 18,
+ BTRFS_SEND_C_CHOWN = 19,
+ BTRFS_SEND_C_UTIMES = 20,
- BTRFS_SEND_C_END,
- BTRFS_SEND_C_UPDATE_EXTENT,
- __BTRFS_SEND_C_MAX_V1,
+ BTRFS_SEND_C_END = 21,
+ BTRFS_SEND_C_UPDATE_EXTENT = 22,
+ BTRFS_SEND_C_MAX_V1 = 22,
/* Version 2 */
- __BTRFS_SEND_C_MAX_V2,
+ BTRFS_SEND_C_FALLOCATE = 23,
+ BTRFS_SEND_C_FILEATTR = 24,
+ BTRFS_SEND_C_ENCODED_WRITE = 25,
+ BTRFS_SEND_C_MAX_V2 = 25,
/* End */
- __BTRFS_SEND_C_MAX,
+ BTRFS_SEND_C_MAX = 25,
};
-#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
/* attributes in send stream */
enum {
- BTRFS_SEND_A_UNSPEC,
-
- BTRFS_SEND_A_UUID,
- BTRFS_SEND_A_CTRANSID,
-
- BTRFS_SEND_A_INO,
- BTRFS_SEND_A_SIZE,
- BTRFS_SEND_A_MODE,
- BTRFS_SEND_A_UID,
- BTRFS_SEND_A_GID,
- BTRFS_SEND_A_RDEV,
- BTRFS_SEND_A_CTIME,
- BTRFS_SEND_A_MTIME,
- BTRFS_SEND_A_ATIME,
- BTRFS_SEND_A_OTIME,
-
- BTRFS_SEND_A_XATTR_NAME,
- BTRFS_SEND_A_XATTR_DATA,
-
- BTRFS_SEND_A_PATH,
- BTRFS_SEND_A_PATH_TO,
- BTRFS_SEND_A_PATH_LINK,
-
- BTRFS_SEND_A_FILE_OFFSET,
- BTRFS_SEND_A_DATA,
-
- BTRFS_SEND_A_CLONE_UUID,
- BTRFS_SEND_A_CLONE_CTRANSID,
- BTRFS_SEND_A_CLONE_PATH,
- BTRFS_SEND_A_CLONE_OFFSET,
- BTRFS_SEND_A_CLONE_LEN,
-
- __BTRFS_SEND_A_MAX,
+ BTRFS_SEND_A_UNSPEC = 0,
+
+ /* Version 1 */
+ BTRFS_SEND_A_UUID = 1,
+ BTRFS_SEND_A_CTRANSID = 2,
+
+ BTRFS_SEND_A_INO = 3,
+ BTRFS_SEND_A_SIZE = 4,
+ BTRFS_SEND_A_MODE = 5,
+ BTRFS_SEND_A_UID = 6,
+ BTRFS_SEND_A_GID = 7,
+ BTRFS_SEND_A_RDEV = 8,
+ BTRFS_SEND_A_CTIME = 9,
+ BTRFS_SEND_A_MTIME = 10,
+ BTRFS_SEND_A_ATIME = 11,
+ BTRFS_SEND_A_OTIME = 12,
+
+ BTRFS_SEND_A_XATTR_NAME = 13,
+ BTRFS_SEND_A_XATTR_DATA = 14,
+
+ BTRFS_SEND_A_PATH = 15,
+ BTRFS_SEND_A_PATH_TO = 16,
+ BTRFS_SEND_A_PATH_LINK = 17,
+
+ BTRFS_SEND_A_FILE_OFFSET = 18,
+ /*
+ * As of send stream v2, this attribute is special: it must be the last
+ * attribute in a command, its header contains only the type, and its
+ * length is implicitly the remaining length of the command.
+ */
+ BTRFS_SEND_A_DATA = 19,
+
+ BTRFS_SEND_A_CLONE_UUID = 20,
+ BTRFS_SEND_A_CLONE_CTRANSID = 21,
+ BTRFS_SEND_A_CLONE_PATH = 22,
+ BTRFS_SEND_A_CLONE_OFFSET = 23,
+ BTRFS_SEND_A_CLONE_LEN = 24,
+
+ BTRFS_SEND_A_MAX_V1 = 24,
+
+ /* Version 2 */
+ BTRFS_SEND_A_FALLOCATE_MODE = 25,
+
+ /*
+ * File attributes from the FS_*_FL namespace (i_flags, xflags),
+ * translated to BTRFS_INODE_* bits (BTRFS_INODE_FLAG_MASK) and stored
+ * in btrfs_inode_item::flags (represented by btrfs_inode::flags and
+ * btrfs_inode::ro_flags).
+ */
+ BTRFS_SEND_A_FILEATTR = 26,
+
+ BTRFS_SEND_A_UNENCODED_FILE_LEN = 27,
+ BTRFS_SEND_A_UNENCODED_LEN = 28,
+ BTRFS_SEND_A_UNENCODED_OFFSET = 29,
+ /*
+ * COMPRESSION and ENCRYPTION default to NONE (0) if omitted from
+ * BTRFS_SEND_C_ENCODED_WRITE.
+ */
+ BTRFS_SEND_A_COMPRESSION = 30,
+ BTRFS_SEND_A_ENCRYPTION = 31,
+ BTRFS_SEND_A_MAX_V2 = 31,
+
+ /* End */
+ BTRFS_SEND_A_MAX = 31,
};
-#define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
-#ifdef __KERNEL__
long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg);
-#endif
#endif