summaryrefslogtreecommitdiffstats
path: root/src/xfs.h
diff options
context:
space:
mode:
authorChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
commit9928d99936105b4653d2d1b8ca74dc3ffba5c71e (patch)
tree06aa4f5e9f0055027c6fb54dd47a8414cf2fba32 /src/xfs.h
First version in git
Diffstat (limited to 'src/xfs.h')
-rw-r--r--src/xfs.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/xfs.h b/src/xfs.h
new file mode 100644
index 0000000..7277d97
--- /dev/null
+++ b/src/xfs.h
@@ -0,0 +1,108 @@
+/*
+ * File xfs.h
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+/*
+ * Super block
+ * Fits into a sector-sized buffer at address 0 of each allocation group.
+ * Only the first of these is ever updated except during growfs.
+ */
+
+#define XFS_SUPERBLOCK_SIZE 512
+
+#define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */
+#define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */
+#define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
+#define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
+#define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
+#define XFS_SB_VERSION_NUMBITS 0x000f
+
+typedef uint32_t xfs_extlen_t; /* extent length in blocks */
+typedef uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
+typedef uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
+typedef uint64_t xfs_ino_t; /* <inode> type */
+typedef uint32_t xfs_agblock_t; /* blockno in alloc. group */
+typedef uint32_t xfs_agnumber_t; /* allocation group number */
+typedef uint64_t xfs_dfsbno_t;
+
+struct xfs_sb
+{
+ uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
+ uint32_t sb_blocksize; /* logical block size, bytes */
+ xfs_drfsbno_t sb_dblocks; /* number of data blocks */
+ xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
+ xfs_drtbno_t sb_rextents; /* number of realtime extents */
+ uint8_t sb_uuid[16]; /* file system unique id */
+ xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
+ xfs_ino_t sb_rootino; /* root inode number */
+ xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
+ xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
+ xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
+ xfs_agblock_t sb_agblocks; /* size of an allocation group */
+ xfs_agnumber_t sb_agcount; /* number of allocation groups */
+ xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
+ xfs_extlen_t sb_logblocks; /* number of log blocks */
+ uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
+ uint16_t sb_sectsize; /* volume sector size, bytes */
+ uint16_t sb_inodesize; /* inode size, bytes */
+ uint16_t sb_inopblock; /* inodes per block */
+ char sb_fname[12]; /* file system name */
+ uint8_t sb_blocklog; /* log2 of sb_blocksize */
+ uint8_t sb_sectlog; /* log2 of sb_sectsize */
+ uint8_t sb_inodelog; /* log2 of sb_inodesize */
+ uint8_t sb_inopblog; /* log2 of sb_inopblock */
+ uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
+ uint8_t sb_rextslog; /* log2 of sb_rextents */
+ uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
+ uint8_t sb_imax_pct; /* max % of fs for inode space */
+ /* statistics */
+ /*
+ * These fields must remain contiguous. If you really
+ * want to change their layout, make sure you fix the
+ * code in xfs_trans_apply_sb_deltas().
+ */
+ uint64_t sb_icount; /* allocated inodes */
+ uint64_t sb_ifree; /* free inodes */
+ uint64_t sb_fdblocks; /* free data blocks */
+ uint64_t sb_frextents; /* free realtime extents */
+ /*
+ * End contiguous fields.
+ */
+ xfs_ino_t sb_uquotino; /* user quota inode */
+ xfs_ino_t sb_gquotino; /* group quota inode */
+ uint16_t sb_qflags; /* quota flags */
+ uint8_t sb_flags; /* misc. flags */
+ uint8_t sb_shared_vn; /* shared version number */
+ xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
+ uint32_t sb_unit; /* stripe or raid unit */
+ uint32_t sb_width; /* stripe or raid width */
+ uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
+ uint8_t sb_logsectlog; /* log2 of the log sector size */
+ uint16_t sb_logsectsize; /* sector size for the log, bytes */
+ uint32_t sb_logsunit; /* stripe unit size for the log */
+ uint32_t sb_features2; /* additonal feature bits */
+} __attribute__ ((__packed__));
+
+int check_xfs(disk_t *disk_car,partition_t *partition,const int verbose);
+int recover_xfs(disk_t *disk_car, const struct xfs_sb *sb,partition_t *partition,const int verbose, const int dump_ind);
+