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 SZ_64K 26 #define BTRFS_SEND_READ_SIZE (48 * SZ_1K) 27 28 enum 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 39 struct btrfs_stream_header { 40 char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)]; 41 __le32 version; 42 } __attribute__ ((__packed__)); 43 44 struct 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 52 struct btrfs_tlv_header { 53 __le16 tlv_type; 54 /* len excluding the header */ 55 __le16 tlv_len; 56 } __attribute__ ((__packed__)); 57 58 /* commands */ 59 enum 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 */ 95 enum { 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__ 133 long btrfs_ioctl_send(struct file *mnt_file, void __user *arg); 134 #endif 135