minix/fs/pfs/const.h

   1 #ifndef __PFS_CONST_H__
   2 #define __PFS_CONST_H__
   3
   4 #define PFS_NR_INODES        512        /* # slots in "in core" inode table */
   5
   6 #define INODE_HASH_LOG2   7     /* 2 based logarithm of the inode hash size */
   7 #define INODE_HASH_SIZE   ((unsigned long)1<<INODE_HASH_LOG2)
   8 #define INODE_HASH_MASK   (((unsigned long)1<<INODE_HASH_LOG2)-1)
   9
  10 #define NO_BIT   ((bit_t) 0)    /* returned by alloc_bit() to signal failure */
  11
  12 #define ATIME            002    /* set if atime field needs updating */
  13 #define CTIME            004    /* set if ctime field needs updating */
  14 #define MTIME            010    /* set if mtime field needs updating */
  15
  16 #define FS_BITMAP_CHUNKS(b) ((b)/sizeof (bitchunk_t))/* # map chunks/blk   */
  17 #define FS_BITCHUNK_BITS                (sizeof(bitchunk_t) * CHAR_BIT)
  18 #define FS_BITS_PER_BLOCK(b)    (FS_BITMAP_CHUNKS(b) * FS_BITCHUNK_BITS)
  19
  20 #define FS_CALL_VEC_SIZE 31
  21
  22 #endif