send.h

   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 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26 #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
  27 #define BTRFS_SEND_STREAM_VERSION 1
  28
  29 #define BTRFS_SEND_BUF_SIZE (1024 * 64)
  30 #define BTRFS_SEND_READ_SIZE (1024 * 48)
  31
  32 enum btrfs_tlv_type {
  33         BTRFS_TLV_U8,
  34         BTRFS_TLV_U16,
  35         BTRFS_TLV_U32,
  36         BTRFS_TLV_U64,
  37         BTRFS_TLV_BINARY,
  38         BTRFS_TLV_STRING,
  39         BTRFS_TLV_UUID,
  40         BTRFS_TLV_TIMESPEC,
  41 };
  42
  43 struct btrfs_stream_header {
  44         char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
  45         __le32 version;
  46 } __attribute__ ((__packed__));
  47
  48 struct btrfs_cmd_header {
  49         /* len excluding the header */
  50         __le32 len;
  51         __le16 cmd;
  52         /* crc including the header with zero crc field */
  53         __le32 crc;
  54 } __attribute__ ((__packed__));
  55
  56 struct btrfs_tlv_header {
  57         __le16 tlv_type;
  58         /* len excluding the header */
  59         __le16 tlv_len;
  60 } __attribute__ ((__packed__));
  61
  62 /* commands */
  63 enum btrfs_send_cmd {
  64         BTRFS_SEND_C_UNSPEC,
  65
  66         BTRFS_SEND_C_SUBVOL,
  67         BTRFS_SEND_C_SNAPSHOT,
  68
  69         BTRFS_SEND_C_MKFILE,
  70         BTRFS_SEND_C_MKDIR,
  71         BTRFS_SEND_C_MKNOD,
  72         BTRFS_SEND_C_MKFIFO,
  73         BTRFS_SEND_C_MKSOCK,
  74         BTRFS_SEND_C_SYMLINK,
  75
  76         BTRFS_SEND_C_RENAME,
  77         BTRFS_SEND_C_LINK,
  78         BTRFS_SEND_C_UNLINK,
  79         BTRFS_SEND_C_RMDIR,
  80
  81         BTRFS_SEND_C_SET_XATTR,
  82         BTRFS_SEND_C_REMOVE_XATTR,
  83
  84         BTRFS_SEND_C_WRITE,
  85         BTRFS_SEND_C_CLONE,
  86
  87         BTRFS_SEND_C_TRUNCATE,
  88         BTRFS_SEND_C_CHMOD,
  89         BTRFS_SEND_C_CHOWN,
  90         BTRFS_SEND_C_UTIMES,
  91
  92         BTRFS_SEND_C_END,
  93         BTRFS_SEND_C_UPDATE_EXTENT,
  94         __BTRFS_SEND_C_MAX,
  95 };
  96 #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
  97
  98 /* attributes in send stream */
  99 enum {
 100         BTRFS_SEND_A_UNSPEC,
 101
 102         BTRFS_SEND_A_UUID,
 103         BTRFS_SEND_A_CTRANSID,
 104
 105         BTRFS_SEND_A_INO,
 106         BTRFS_SEND_A_SIZE,
 107         BTRFS_SEND_A_MODE,
 108         BTRFS_SEND_A_UID,
 109         BTRFS_SEND_A_GID,
 110         BTRFS_SEND_A_RDEV,
 111         BTRFS_SEND_A_CTIME,
 112         BTRFS_SEND_A_MTIME,
 113         BTRFS_SEND_A_ATIME,
 114         BTRFS_SEND_A_OTIME,
 115
 116         BTRFS_SEND_A_XATTR_NAME,
 117         BTRFS_SEND_A_XATTR_DATA,
 118
 119         BTRFS_SEND_A_PATH,
 120         BTRFS_SEND_A_PATH_TO,
 121         BTRFS_SEND_A_PATH_LINK,
 122
 123         BTRFS_SEND_A_FILE_OFFSET,
 124         BTRFS_SEND_A_DATA,
 125
 126         BTRFS_SEND_A_CLONE_UUID,
 127         BTRFS_SEND_A_CLONE_CTRANSID,
 128         BTRFS_SEND_A_CLONE_PATH,
 129         BTRFS_SEND_A_CLONE_OFFSET,
 130         BTRFS_SEND_A_CLONE_LEN,
 131
 132         __BTRFS_SEND_A_MAX,
 133 };
 134 #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
 135
 136 #ifdef __KERNEL__
 137 long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
 138 #endif
 139
 140 #ifdef __cplusplus
 141 }
 142 #endif