minix/servers/vfs/const.h
David van Moolenbroek b31119abf5 Mount updates:
- allow mounting with "none" block device
- allow unmounting by mountpoint
- make VFS aware of file system process labels
- allow m3_ca1 to use the full available message size
- use *printf in u/mount(1), as mount(2) uses it already
- fix reference leaks for some mount error cases in VFS
2010-01-12 23:08:50 +00:00

49 lines
1.9 KiB
C

/* Tables sizes */
#define NR_FILPS 512 /* # slots in filp table */
#define NR_LOCKS 8 /* # slots in the file locking table */
#define NR_MNTS 8 /* # slots in mount table */
#define NR_VNODES 512 /* # slots in vnode table */
#define NR_NONEDEVS NR_MNTS /* # slots in nonedev bitmap */
/* Miscellaneous constants */
#define SU_UID ((uid_t) 0) /* super_user's uid_t */
#define SERVERS_UID ((uid_t) 11) /* who may do FSSIGNON */
#define SYS_UID ((uid_t) 0) /* uid_t for system processes and INIT */
#define SYS_GID ((gid_t) 0) /* gid_t for system processes and INIT */
#define FP_BLOCKED_ON_NONE 0 /* not blocked */
#define FP_BLOCKED_ON_PIPE 1 /* susp'd on pipe */
#define FP_BLOCKED_ON_LOCK 2 /* susp'd on lock */
#define FP_BLOCKED_ON_POPEN 3 /* susp'd on pipe open */
#define FP_BLOCKED_ON_SELECT 4 /* susp'd on select */
#define FP_BLOCKED_ON_DOPEN 5 /* susp'd on device open */
#define FP_BLOCKED_ON_OTHER 6 /* blocked on other process, check
fp_task to find out */
/* test if the process is blocked on something */
#define fp_is_blocked(fp) ((fp)->fp_blocked_on != FP_BLOCKED_ON_NONE)
#define DUP_MASK 0100 /* mask to distinguish dup2 from dup */
#define LOOK_UP 0 /* tells search_dir to lookup string */
#define ENTER 1 /* tells search_dir to make dir entry */
#define DELETE 2 /* tells search_dir to delete entry */
#define IS_EMPTY 3 /* tells search_dir to ret. OK or ENOTEMPTY */
#define SYMLOOP 16
#define ROOT_INODE 1 /* inode number for root directory */
#define LABEL_MAX 16 /* maximum label size (including '\0'). Should
* not be smaller than 16 or bigger than
* M3_LONG_STRING.
*/
/* Args to dev_io */
#define VFS_DEV_READ 2001
#define VFS_DEV_WRITE 2002
#define VFS_DEV_SCATTER 2003
#define VFS_DEV_GATHER 2004
#define VFS_DEV_IOCTL 2005
#define VFS_DEV_SELECT 2006