/* Including became more and more painful. Below a very abbreviated version of some declarations, only designed to be able to check a magic number in case no filesystem type was given. */ #ifndef BLKGETSIZE #ifndef _IO /* pre-1.3.45 */ #define BLKGETSIZE 0x1260 /* return device size */ #else /* same on i386, m68k, arm; different on alpha, mips, sparc, ppc */ #define BLKGETSIZE _IO(0x12,96) #endif #endif #define MINIX_SUPER_MAGIC 0x137F /* original minix fs */ #define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */ struct minix_super_block { unsigned char s_dummy[16]; unsigned char s_magic[2]; }; #define minixmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8)) #define ISODCL(from, to) (to - from + 1) #define ISO_STANDARD_ID "CD001" struct iso_volume_descriptor { char type[ISODCL(1,1)]; /* 711 */ char id[ISODCL(2,6)]; char version[ISODCL(7,7)]; char data[ISODCL(8,2048)]; }; #define HS_STANDARD_ID "CDROM" struct hs_volume_descriptor { char foo[ISODCL ( 1, 8)]; /* 733 */ char type[ISODCL ( 9, 9)]; /* 711 */ char id[ISODCL ( 10, 14)]; char version[ISODCL ( 15, 15)]; /* 711 */ char data[ISODCL(16,2048)]; }; #define EXT_SUPER_MAGIC 0x137D struct ext_super_block { unsigned char s_dummy[56]; unsigned char s_magic[2]; }; #define extmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8)) #define EXT2_PRE_02B_MAGIC 0xEF51 #define EXT2_SUPER_MAGIC 0xEF53 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 struct ext2_super_block { unsigned char s_dummy1[56]; unsigned char s_magic[2]; unsigned char s_dummy2[34]; unsigned char s_feature_compat[4]; unsigned char s_feature_incompat[4]; unsigned char s_feature_ro_compat[4]; unsigned char s_uuid[16]; unsigned char s_volume_name[16]; unsigned char s_dummy3[88]; unsigned char s_journal_inum[4]; /* ext3 only */ }; #define ext2magic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8)) struct reiserfs_super_block { unsigned char s_block_count[4]; unsigned char s_free_blocks[4]; unsigned char s_root_block[4]; unsigned char s_journal_block[4]; unsigned char s_journal_dev[4]; unsigned char s_orig_journal_size[4]; unsigned char s_journal_trans_max[4]; unsigned char s_journal_block_count[4]; unsigned char s_journal_max_batch[4]; unsigned char s_journal_max_commit_age[4]; unsigned char s_journal_max_trans_age[4]; unsigned char s_blocksize[2]; unsigned char s_oid_maxsize[2]; unsigned char s_oid_cursize[2]; unsigned char s_state[2]; unsigned char s_magic[12]; }; #define REISERFS_SUPER_MAGIC_STRING "ReIsErFs" #define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs" #define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024) /* the spot for the super in versions 3.5 - 3.5.10 (inclusive) */ #define REISERFS_OLD_DISK_OFFSET_IN_BYTES (8 * 1024) #define _XIAFS_SUPER_MAGIC 0x012FD16D struct xiafs_super_block { unsigned char s_boot_segment[512]; /* 1st sector reserved for boot */ unsigned char s_dummy[60]; unsigned char s_magic[4]; }; #define xiafsmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \ (((unsigned int) s.s_magic[2]) << 16) + \ (((unsigned int) s.s_magic[3]) << 24)) /* From jj@sunsite.ms.mff.cuni.cz Mon Mar 23 15:19:05 1998 */ #define UFS_SUPER_MAGIC 0x00011954 struct ufs_super_block { unsigned char s_dummy[0x55c]; unsigned char s_magic[4]; }; #define ufsmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \ (((unsigned int) s.s_magic[2]) << 16) + \ (((unsigned int) s.s_magic[3]) << 24)) /* From Richard.Russon@ait.co.uk Wed Feb 24 08:05:27 1999 */ #define NTFS_SUPER_MAGIC "NTFS" struct ntfs_super_block { unsigned char s_dummy[3]; unsigned char s_magic[4]; }; /* From inspection of a few FAT filesystems - aeb */ /* Unfortunately I find almost the same thing on an extended partition; it looks like a primary has some directory entries where the extended has a partition table: IO.SYS, MSDOS.SYS, WINBOOT.SYS */ struct fat_super_block { unsigned char s_dummy[3]; unsigned char s_os[8]; /* "MSDOS5.0" or "MSWIN4.0" or "MSWIN4.1" */ /* mtools-3.9.4 writes "MTOOL394" */ unsigned char s_dummy2[32]; unsigned char s_label[11]; /* for DOS? */ unsigned char s_fs[8]; /* "FAT12 " or "FAT16 " or all zero */ /* OS/2 BM has "FAT " here. */ unsigned char s_dummy3[9]; unsigned char s_label2[11]; /* for Windows? */ unsigned char s_fs2[8]; /* garbage or "FAT32 " */ }; #define XFS_SUPER_MAGIC "XFSB" struct xfs_super_block { unsigned char s_magic[4]; unsigned char s_dummy[28]; unsigned char s_uuid[16]; unsigned char s_dummy2[60]; unsigned char s_fname[12]; }; #define CRAMFS_SUPER_MAGIC 0x28cd3d45 struct cramfs_super_block { unsigned char s_magic[4]; unsigned char s_dummy[12]; unsigned char s_id[16]; }; #define cramfsmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \ (((unsigned int) s.s_magic[2]) << 16) + \ (((unsigned int) s.s_magic[3]) << 24)) #define HFS_SUPER_MAGIC 0x4244 struct hfs_super_block { unsigned char s_magic[2]; unsigned char s_dummy[18]; unsigned char s_blksize[4]; }; #define hfsmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8)) #define hfsblksize(s) ((unsigned int) s.s_blksize[0] + \ (((unsigned int) s.s_blksize[1]) << 8) + \ (((unsigned int) s.s_blksize[2]) << 16) + \ (((unsigned int) s.s_blksize[3]) << 24)) #define HPFS_SUPER_MAGIC 0xf995e849 struct hpfs_super_block { unsigned char s_magic[4]; unsigned char s_magic2[4]; }; #define hpfsmagic(s) ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \ (((unsigned int) s.s_magic[2]) << 16) + \ (((unsigned int) s.s_magic[3]) << 24)) struct adfs_super_block { unsigned char s_dummy[448]; unsigned char s_blksize[1]; unsigned char s_dummy2[62]; unsigned char s_checksum[1]; }; #define adfsblksize(s) ((unsigned int) s.s_blksize[0])