servers/vfs/const.h

   1 /* Tables sizes */
   2 #define NR_FILPS         512    /* # slots in filp table */
   3 #define NR_LOCKS           8    /* # slots in the file locking table */
   4 #define NR_MNTS             8   /* # slots in mount table */
   5 #define NR_VNODES         512   /* # slots in vnode table */
   6
   7 #define NR_NONEDEVS     NR_MNTS /* # slots in nonedev bitmap */
   8
   9 /* Miscellaneous constants */
  10 #define SU_UID   ((uid_t) 0)    /* super_user's uid_t */
  11 #define SERVERS_UID ((uid_t) 11) /* who may do FSSIGNON */
  12 #define SYS_UID  ((uid_t) 0)    /* uid_t for system processes and INIT */
  13 #define SYS_GID  ((gid_t) 0)    /* gid_t for system processes and INIT */
  14
  15 #define FP_BLOCKED_ON_NONE      0 /* not blocked */
  16 #define FP_BLOCKED_ON_PIPE      1 /* susp'd on pipe */
  17 #define FP_BLOCKED_ON_LOCK      2 /* susp'd on lock */
  18 #define FP_BLOCKED_ON_POPEN     3 /* susp'd on pipe open */
  19 #define FP_BLOCKED_ON_SELECT    4 /* susp'd on select */
  20 #define FP_BLOCKED_ON_DOPEN     5 /* susp'd on device open */
  21 #define FP_BLOCKED_ON_OTHER     6 /* blocked on other process, check
  22                                      fp_task to find out */
  23
  24 /* test if the process is blocked on something */
  25 #define fp_is_blocked(fp)       ((fp)->fp_blocked_on != FP_BLOCKED_ON_NONE)
  26
  27 #define DUP_MASK        0100    /* mask to distinguish dup2 from dup */
  28
  29 #define LOOK_UP            0 /* tells search_dir to lookup string */
  30 #define ENTER              1 /* tells search_dir to make dir entry */
  31 #define DELETE             2 /* tells search_dir to delete entry */
  32 #define IS_EMPTY           3 /* tells search_dir to ret. OK or ENOTEMPTY */
  33
  34 #define SYMLOOP         16
  35
  36 #define ROOT_INODE         1            /* inode number for root directory */
  37
  38 #define LABEL_MAX       16      /* maximum label size (including '\0'). Should
  39                                  * not be smaller than 16 or bigger than
  40                                  * M3_LONG_STRING.
  41                                  */
  42
  43 /* Args to dev_io */
  44 #define VFS_DEV_READ    2001
  45 #define VFS_DEV_WRITE   2002
  46 #define VFS_DEV_SCATTER 2003
  47 #define VFS_DEV_GATHER  2004
  48 #define VFS_DEV_IOCTL   2005
  49 #define VFS_DEV_SELECT  2006