servers/vfs/const.h

   1 #ifndef __VFS_CONST_H__
   2 #define __VFS_CONST_H__
   3
   4 /* Tables sizes */
   5 #define NR_FILPS         512    /* # slots in filp table */
   6 #define NR_LOCKS           8    /* # slots in the file locking table */
   7 #define NR_MNTS           16    /* # slots in mount table */
   8 #define NR_VNODES        512    /* # slots in vnode table */
   9 #define NR_WTHREADS        8    /* # slots in worker thread table */
  10
  11 #define NR_NONEDEVS     NR_MNTS /* # slots in nonedev bitmap */
  12
  13 /* Miscellaneous constants */
  14 #define SU_UID   ((uid_t) 0)    /* super_user's uid_t */
  15 #define SYS_UID  ((uid_t) 0)    /* uid_t for system processes and INIT */
  16 #define SYS_GID  ((gid_t) 0)    /* gid_t for system processes and INIT */
  17
  18 #define FP_BLOCKED_ON_NONE      0 /* not blocked */
  19 #define FP_BLOCKED_ON_PIPE      1 /* susp'd on pipe */
  20 #define FP_BLOCKED_ON_LOCK      2 /* susp'd on lock */
  21 #define FP_BLOCKED_ON_POPEN     3 /* susp'd on pipe open */
  22 #define FP_BLOCKED_ON_SELECT    4 /* susp'd on select */
  23 #define FP_BLOCKED_ON_DOPEN     5 /* susp'd on device open */
  24 #define FP_BLOCKED_ON_OTHER     6 /* blocked on other process, check
  25                                      fp_task to find out */
  26
  27 /* test if the process is blocked on something */
  28 #define fp_is_blocked(fp)       ((fp)->fp_blocked_on != FP_BLOCKED_ON_NONE)
  29
  30 /* test if reply is a driver reply */
  31 #define IS_DRV_REPLY(x) (IS_DEV_RS(x) || IS_BDEV_RS(x) || (x) == TASK_REPLY)
  32 #define DUP_MASK        0100    /* mask to distinguish dup2 from dup */
  33
  34 #define LOOK_UP            0 /* tells search_dir to lookup string */
  35 #define ENTER              1 /* tells search_dir to make dir entry */
  36 #define DELETE             2 /* tells search_dir to delete entry */
  37 #define IS_EMPTY           3 /* tells search_dir to ret. OK or ENOTEMPTY */
  38
  39 #define SYMLOOP         16
  40
  41 #define LABEL_MAX       16      /* maximum label size (including '\0'). Should
  42                                  * not be smaller than 16 or bigger than
  43                                  * M3_LONG_STRING.
  44                                  */
  45
  46 /* Args to dev_io */
  47 #define VFS_DEV_READ    2001
  48 #define VFS_DEV_WRITE   2002
  49 #define VFS_DEV_IOCTL   2005
  50 #define VFS_DEV_SELECT  2006
  51
  52 #endif