include/minix.h

   1 /*
   2  * No copyright is claimed.  This code is in the public domain; do with
   3  * it what you wish.
   4  */
   5 #ifndef UTIL_LINUX_MINIX_H
   6 #define UTIL_LINUX_MINIX_H
   7
   8 #include <stdint.h>
   9
  10 struct minix_inode {
  11         uint16_t i_mode;
  12         uint16_t i_uid;
  13         uint32_t i_size;
  14         uint32_t i_time;
  15         uint8_t  i_gid;
  16         uint8_t  i_nlinks;
  17         uint16_t i_zone[9];
  18 };
  19
  20 struct minix2_inode {
  21         uint16_t i_mode;
  22         uint16_t i_nlinks;
  23         uint16_t i_uid;
  24         uint16_t i_gid;
  25         uint32_t i_size;
  26         uint32_t i_atime;
  27         uint32_t i_mtime;
  28         uint32_t i_ctime;
  29         uint32_t i_zone[10];
  30 };
  31
  32 struct minix_super_block {
  33         uint16_t s_ninodes;
  34         uint16_t s_nzones;
  35         uint16_t s_imap_blocks;
  36         uint16_t s_zmap_blocks;
  37         uint16_t s_firstdatazone;
  38         uint16_t s_log_zone_size;
  39         uint32_t s_max_size;
  40         uint16_t s_magic;
  41         uint16_t s_state;
  42         uint32_t s_zones;
  43 };
  44
  45 /* V3 minix super-block data on disk */
  46 struct minix3_super_block {
  47         uint32_t s_ninodes;
  48         uint16_t s_pad0;
  49         uint16_t s_imap_blocks;
  50         uint16_t s_zmap_blocks;
  51         uint16_t s_firstdatazone;
  52         uint16_t s_log_zone_size;
  53         uint16_t s_pad1;
  54         uint32_t s_max_size;
  55         uint32_t s_zones;
  56         uint16_t s_magic;
  57         uint16_t s_pad2;
  58         uint16_t s_blocksize;
  59         uint8_t  s_disk_version;
  60 };
  61
  62 /*
  63  * Minix subpartitions are always within primary dos partition.
  64  */
  65 #define MINIX_MAXPARTITIONS  4
  66
  67 #define MINIX_BLOCK_SIZE_BITS 10
  68 #define MINIX_BLOCK_SIZE     (1 << MINIX_BLOCK_SIZE_BITS)
  69
  70 #define MINIX_NAME_MAX       255             /* # chars in a file name */
  71 #define MINIX_MAX_INODES     65535
  72
  73 #define MINIX_INODES_PER_BLOCK ((MINIX_BLOCK_SIZE)/(sizeof (struct minix_inode)))
  74 #define MINIX2_INODES_PER_BLOCK ((MINIX_BLOCK_SIZE)/(sizeof (struct minix2_inode)))
  75
  76 /* minix_super_block.s_state */
  77 #define MINIX_VALID_FS       0x0001          /* Clean fs. */
  78 #define MINIX_ERROR_FS       0x0002          /* fs has errors. */
  79
  80
  81 #define MINIX_SUPER_MAGIC    0x137F          /* minix V1 fs, 14 char names */
  82 #define MINIX_SUPER_MAGIC2   0x138F          /* minix V1 fs, 30 char names */
  83
  84 #define MINIX2_SUPER_MAGIC   0x2468          /* minix V2 fs, 14 char names */
  85 #define MINIX2_SUPER_MAGIC2  0x2478          /* minix V2 fs, 30 char names */
  86
  87 #define MINIX3_SUPER_MAGIC   0x4d5a          /* minix V3 fs (60 char names) */
  88
  89 #endif /* UTIL_LINUX_MINIX_H */