rosapps/drivers/ramdrv/minix/minix_fs.h

   1 #define MINIX_ROOT_INO 1
   2
   3 /* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
   4 #define MINIX_LINK_MAX  250
   5
   6 #define MINIX_I_MAP_SLOTS       8
   7 #define MINIX_Z_MAP_SLOTS       64
   8 #define MINIX_SUPER_MAGIC       0x137F          /* original minix fs */
   9 #define MINIX_SUPER_MAGIC2      0x138F          /* minix fs, 30 char names */
  10 #define MINIX2_SUPER_MAGIC      0x2468          /* minix V2 fs */
  11 #define MINIX2_SUPER_MAGIC2     0x2478          /* minix V2 fs, 30 char names */
  12 #define MINIX_VALID_FS          0x0001          /* Clean fs. */
  13 #define MINIX_ERROR_FS          0x0002          /* fs has errors. */
  14
  15 #define MINIX_INODES_PER_BLOCK ((BLOCKSIZE)/(sizeof (struct minix_inode)))
  16 #define MINIX2_INODES_PER_BLOCK ((BLOCKSIZE)/(sizeof (struct minix2_inode)))
  17
  18 #define MINIX_V1                0x0001          /* original minix fs */
  19 #define MINIX_V2                0x0002          /* minix V2 fs */
  20
  21
  22 /*
  23  * This is the original minix inode layout on disk.
  24  * Note the 8-bit gid and atime and ctime.
  25  */
  26 struct minix_inode {
  27         unsigned short int i_mode;
  28         unsigned short int i_uid;
  29         unsigned long i_size;
  30         unsigned long i_time;
  31         unsigned char  i_gid;
  32         unsigned char  i_nlinks;
  33         unsigned short int i_zone[9];
  34 };
  35
  36 /*
  37  * The new minix inode has all the time entries, as well as
  38  * long block numbers and a third indirect block (7+1+1+1
  39  * instead of 7+1+1). Also, some previously 8-bit values are
  40  * now 16-bit. The inode is now 64 bytes instead of 32.
  41  */
  42 struct minix2_inode {
  43         unsigned short int i_mode;
  44         unsigned short int i_nlinks;
  45         unsigned short int i_uid;
  46         unsigned short int i_gid;
  47         unsigned long i_size;
  48         unsigned long i_atime;
  49         unsigned long i_mtime;
  50         unsigned long i_ctime;
  51         unsigned long i_zone[10];
  52 };
  53
  54 /*
  55  * minix super-block data on disk
  56  */
  57 struct minix_super_block {
  58         unsigned short int s_ninodes;
  59         unsigned short int s_nzones;
  60         unsigned short int s_imap_blocks;
  61         unsigned short int s_zmap_blocks;
  62         unsigned short int s_firstdatazone;
  63         unsigned short int s_log_zone_size;
  64         unsigned long s_max_size;
  65         unsigned short int s_magic;
  66         unsigned short int s_state;
  67         unsigned long s_zones;
  68 };
  69
  70 struct minix_dir_entry {
  71         unsigned short int inode;
  72         char name[0];
  73 };
  74 #define MINIX_DIR_ENTRY_SIZE (sizeof(struct minix_dir_entry)+30)
  75
  76 BOOLEAN MinixReadSector(IN PDEVICE_OBJECT pDeviceObject,
  77                         IN ULONG        DiskSector,
  78                         IN UCHAR*       Buffer);
  79
  80 #define BLOCKSIZE (1024)