source: MondoRescue/branches/2.2.5/mindi-busybox/util-linux/minix.h

Last change on this file was 1765, checked in by Bruno Cornec, 13 years ago

Update to busybox 1.7.2

  • Property svn:eol-style set to native
File size: 2.4 KB
Line 
1/*
2 * This is the original minix inode layout on disk.
3 * Note the 8-bit gid and atime and ctime.
4 */
5struct minix1_inode {
6    uint16_t i_mode;
7    uint16_t i_uid;
8    uint32_t i_size;
9    uint32_t i_time;
10    uint8_t  i_gid;
11    uint8_t  i_nlinks;
12    uint16_t i_zone[9];
13};
14
15/*
16 * The new minix inode has all the time entries, as well as
17 * long block numbers and a third indirect block (7+1+1+1
18 * instead of 7+1+1). Also, some previously 8-bit values are
19 * now 16-bit. The inode is now 64 bytes instead of 32.
20 */
21struct minix2_inode {
22    uint16_t i_mode;
23    uint16_t i_nlinks;
24    uint16_t i_uid;
25    uint16_t i_gid;
26    uint32_t i_size;
27    uint32_t i_atime;
28    uint32_t i_mtime;
29    uint32_t i_ctime;
30    uint32_t i_zone[10];
31};
32
33/*
34 * minix super-block data on disk
35 */
36struct minix_super_block {
37    uint16_t s_ninodes;
38    uint16_t s_nzones;
39    uint16_t s_imap_blocks;
40    uint16_t s_zmap_blocks;
41    uint16_t s_firstdatazone;
42    uint16_t s_log_zone_size;
43    uint32_t s_max_size;
44    uint16_t s_magic;
45    uint16_t s_state;
46    uint32_t s_zones;
47};
48
49struct minix_dir_entry {
50    uint16_t inode;
51    char name[0];
52};
53
54/* Believe it or not, but mount.h has this one #defined */
55#undef BLOCK_SIZE
56
57enum {
58    BLOCK_SIZE              = 1024,
59    BITS_PER_BLOCK          = BLOCK_SIZE << 3,
60
61    MINIX_ROOT_INO          = 1,
62    MINIX_BAD_INO           = 2,
63
64    MINIX1_SUPER_MAGIC      = 0x137F,       /* original minix fs */
65    MINIX1_SUPER_MAGIC2     = 0x138F,       /* minix fs, 30 char names */
66    MINIX2_SUPER_MAGIC      = 0x2468,       /* minix V2 fs */
67    MINIX2_SUPER_MAGIC2     = 0x2478,       /* minix V2 fs, 30 char names */
68    MINIX_VALID_FS          = 0x0001,       /* clean fs */
69    MINIX_ERROR_FS          = 0x0002,       /* fs has errors */
70
71    INODE_SIZE1             = sizeof(struct minix1_inode),
72    INODE_SIZE2             = sizeof(struct minix2_inode),
73    MINIX1_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix1_inode),
74    MINIX2_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix2_inode),
75};
76
77/*
78Basic test script for regressions in mkfs/fsck.
79Copies current dir into image (typically bbox build tree).
80
81#!/bin/sh
82tmpdir=/tmp/minixtest-$$
83tmpimg=/tmp/minix-img-$$
84
85mkdir $tmpdir
86dd if=/dev/zero of=$tmpimg bs=1M count=20 || exit
87./busybox mkfs.minix $tmpimg || exit
88mount -o loop $tmpimg $tmpdir || exit
89cp -a "$PWD" $tmpdir
90umount $tmpdir || exit
91./busybox fsck.minix -vfm $tmpimg || exit
92echo "Continue?"
93read junk
94./busybox fsck.minix -vfml $tmpimg || exit
95rmdir $tmpdir
96rm $tmpimg
97
98*/
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