From 87033fb5fadc000c3b1ce7c46a813ad0479f62fc Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Wed, 3 Jan 2007 00:47:47 +0000 Subject: forgot to svn add util-linux/minix.h :( --- util-linux/minix.h | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 util-linux/minix.h (limited to 'util-linux/minix.h') diff --git a/util-linux/minix.h b/util-linux/minix.h new file mode 100644 index 000000000..476f32735 --- /dev/null +++ b/util-linux/minix.h @@ -0,0 +1,76 @@ +/* + * This is the original minix inode layout on disk. + * Note the 8-bit gid and atime and ctime. + */ +struct minix1_inode { + uint16_t i_mode; + uint16_t i_uid; + uint32_t i_size; + uint32_t i_time; + uint8_t i_gid; + uint8_t i_nlinks; + uint16_t i_zone[9]; +}; + +/* + * The new minix inode has all the time entries, as well as + * long block numbers and a third indirect block (7+1+1+1 + * instead of 7+1+1). Also, some previously 8-bit values are + * now 16-bit. The inode is now 64 bytes instead of 32. + */ +struct minix2_inode { + uint16_t i_mode; + uint16_t i_nlinks; + uint16_t i_uid; + uint16_t i_gid; + uint32_t i_size; + uint32_t i_atime; + uint32_t i_mtime; + uint32_t i_ctime; + uint32_t i_zone[10]; +}; + +/* + * minix super-block data on disk + */ +struct minix_super_block { + uint16_t s_ninodes; + uint16_t s_nzones; + uint16_t s_imap_blocks; + uint16_t s_zmap_blocks; + uint16_t s_firstdatazone; + uint16_t s_log_zone_size; + uint32_t s_max_size; + uint16_t s_magic; + uint16_t s_state; + uint32_t s_zones; +}; + +struct minix_dir_entry { + uint16_t inode; + char name[0]; +}; + +/* Believe it or not, but mount.h has this one #defined */ +#undef BLOCK_SIZE + +enum { + BLOCK_SIZE = 1024, + BITS_PER_BLOCK = BLOCK_SIZE << 3, + + MINIX_ROOT_INO = 1, + MINIX_BAD_INO = 2, + + MINIX1_SUPER_MAGIC = 0x137F, /* original minix fs */ + MINIX1_SUPER_MAGIC2 = 0x138F, /* minix fs, 30 char names */ + MINIX2_SUPER_MAGIC = 0x2468, /* minix V2 fs */ + MINIX2_SUPER_MAGIC2 = 0x2478, /* minix V2 fs, 30 char names */ + MINIX_VALID_FS = 0x0001, /* clean fs */ + MINIX_ERROR_FS = 0x0002, /* fs has errors */ + + INODE_SIZE1 = sizeof(struct minix1_inode), + INODE_SIZE2 = sizeof(struct minix2_inode), + MINIX1_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix1_inode), + MINIX2_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix2_inode), +}; + -- cgit v1.2.3