1/*
  2 * Copyright (C) 2012 Alexander Block.  All rights reserved.
  3 * Copyright (C) 2012 STRATO.  All rights reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or
  6 * modify it under the terms of the GNU General Public
  7 * License v2 as published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 12 * General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public
 15 * License along with this program; if not, write to the
 16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 17 * Boston, MA 021110-1307, USA.
 18 */
 19
 20#include "ctree.h"
 21
 22#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
 23#define BTRFS_SEND_STREAM_VERSION 1
 24
 25#define BTRFS_SEND_BUF_SIZE (1024 * 64)
 26#define BTRFS_SEND_READ_SIZE (1024 * 48)
 27
 28enum btrfs_tlv_type {
 29	BTRFS_TLV_U8,
 30	BTRFS_TLV_U16,
 31	BTRFS_TLV_U32,
 32	BTRFS_TLV_U64,
 33	BTRFS_TLV_BINARY,
 34	BTRFS_TLV_STRING,
 35	BTRFS_TLV_UUID,
 36	BTRFS_TLV_TIMESPEC,
 37};
 38
 39struct btrfs_stream_header {
 40	char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
 41	__le32 version;
 42} __attribute__ ((__packed__));
 43
 44struct btrfs_cmd_header {
 45	/* len excluding the header */
 46	__le32 len;
 47	__le16 cmd;
 48	/* crc including the header with zero crc field */
 49	__le32 crc;
 50} __attribute__ ((__packed__));
 51
 52struct btrfs_tlv_header {
 53	__le16 tlv_type;
 54	/* len excluding the header */
 55	__le16 tlv_len;
 56} __attribute__ ((__packed__));
 57
 58/* commands */
 59enum btrfs_send_cmd {
 60	BTRFS_SEND_C_UNSPEC,
 61
 62	BTRFS_SEND_C_SUBVOL,
 63	BTRFS_SEND_C_SNAPSHOT,
 64
 65	BTRFS_SEND_C_MKFILE,
 66	BTRFS_SEND_C_MKDIR,
 67	BTRFS_SEND_C_MKNOD,
 68	BTRFS_SEND_C_MKFIFO,
 69	BTRFS_SEND_C_MKSOCK,
 70	BTRFS_SEND_C_SYMLINK,
 71
 72	BTRFS_SEND_C_RENAME,
 73	BTRFS_SEND_C_LINK,
 74	BTRFS_SEND_C_UNLINK,
 75	BTRFS_SEND_C_RMDIR,
 76
 77	BTRFS_SEND_C_SET_XATTR,
 78	BTRFS_SEND_C_REMOVE_XATTR,
 79
 80	BTRFS_SEND_C_WRITE,
 81	BTRFS_SEND_C_CLONE,
 82
 83	BTRFS_SEND_C_TRUNCATE,
 84	BTRFS_SEND_C_CHMOD,
 85	BTRFS_SEND_C_CHOWN,
 86	BTRFS_SEND_C_UTIMES,
 87
 88	BTRFS_SEND_C_END,
 89	BTRFS_SEND_C_UPDATE_EXTENT,
 90	__BTRFS_SEND_C_MAX,
 91};
 92#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
 93
 94/* attributes in send stream */
 95enum {
 96	BTRFS_SEND_A_UNSPEC,
 97
 98	BTRFS_SEND_A_UUID,
 99	BTRFS_SEND_A_CTRANSID,
100
101	BTRFS_SEND_A_INO,
102	BTRFS_SEND_A_SIZE,
103	BTRFS_SEND_A_MODE,
104	BTRFS_SEND_A_UID,
105	BTRFS_SEND_A_GID,
106	BTRFS_SEND_A_RDEV,
107	BTRFS_SEND_A_CTIME,
108	BTRFS_SEND_A_MTIME,
109	BTRFS_SEND_A_ATIME,
110	BTRFS_SEND_A_OTIME,
111
112	BTRFS_SEND_A_XATTR_NAME,
113	BTRFS_SEND_A_XATTR_DATA,
114
115	BTRFS_SEND_A_PATH,
116	BTRFS_SEND_A_PATH_TO,
117	BTRFS_SEND_A_PATH_LINK,
118
119	BTRFS_SEND_A_FILE_OFFSET,
120	BTRFS_SEND_A_DATA,
121
122	BTRFS_SEND_A_CLONE_UUID,
123	BTRFS_SEND_A_CLONE_CTRANSID,
124	BTRFS_SEND_A_CLONE_PATH,
125	BTRFS_SEND_A_CLONE_OFFSET,
126	BTRFS_SEND_A_CLONE_LEN,
127
128	__BTRFS_SEND_A_MAX,
129};
130#define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
131
132#ifdef __KERNEL__
133long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
134#endif