home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Atari Mega Archive 2
/
Atari Mega Archive CD - Volume 2.iso
/
minix
/
up1510b.tgz
/
up1510b
/
src
/
fs
/
const.h
< prev
next >
Wrap
Text File
|
1990-07-23
|
3KB
|
58 lines
/* Tables sizes */
#define NR_ZONE_NUMS 9 /* # zone numbers in an inode */
#define NR_FILPS 64 /* # slots in filp table */
#define I_MAP_SLOTS 8 /* max # of blocks in the inode bit map */
#define ZMAP_SLOTS 8 /* max # of blocks in the zone bit map */
#define NR_INODES 32 /* # slots in "in core" inode table */
#define NR_SUPERS 5 /* # slots in super block table */
#define FS_STACK_BYTES (272 * sizeof (char *)) /* size of file system stack */
/* Miscellaneous constants */
#define SUPER_MAGIC 0x137F /* magic number contained in super-block */
#define SU_UID (uid_t) 0 /* super_user's uid_t */
#define SYS_UID (uid_t) 0 /* uid_t for processes MM and INIT */
#define SYS_GID (gid_t) 0 /* gid_t for processes MM and INIT */
#define NORMAL 0 /* forces get_block to do disk read */
#define NO_READ 1 /* prevents get_block from doing disk read */
#define PREFETCH 2 /* tells get_block not to read or mark dev */
#define XPIPE -(NR_TASKS+1) /* used in fp_task when suspended on pipe */
#define XOPEN -(NR_TASKS+2) /* used in fp_task when suspended in open */
#define NO_BIT (bit_nr) 0 /* returned by alloc_bit() to signal failure */
#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 CLEAN 0 /* disk and memory copies identical */
#define DIRTY 1 /* disk and memory copies differ */
#define ATIME 002 /* set if atime field needs updating */
#define CTIME 004 /* set if ctime field needs updating */
#define MTIME 010 /* set if mtime field needs updating */
#define BOOT_BLOCK (block_nr)0 /* block number of boot block */
#define SUPER_BLOCK (block_nr)1 /* block number of super block */
#define ROOT_INODE (ino_t)1 /* inode number for root directory */
#define INFO 2 /* where in data_org is info from build */
#define END_OF_FILE -104 /* eof detected */
/* Derived sizes */
#define ZONE_NUM_SIZE sizeof(zone_nr) /* # bytes in zone nr */
#define NR_DZONE_NUM (NR_ZONE_NUMS-2) /* # zones in inode */
#define DIR_ENTRY_SIZE sizeof(dir_struct) /* # bytes/dir entry */
#define INODES_PER_BLOCK (BLOCK_SIZE/INODE_SIZE) /* # inodes/disk blk */
#define INODE_SIZE (sizeof (d_inode)) /* bytes in disk inode */
#define NR_DIR_ENTRIES (BLOCK_SIZE/DIR_ENTRY_SIZE) /* # dir entries/block */
#define NR_INDIRECTS (BLOCK_SIZE/ZONE_NUM_SIZE) /* # zones/indir block */
#define INTS_PER_BLOCK (BLOCK_SIZE/sizeof(int)) /* # integers/block */
#define SUPER_SIZE sizeof(struct super_block) /* super_block size */
#define PIPE_SIZE (NR_DZONE_NUM*BLOCK_SIZE) /* pipe size in bytes */
#define MAX_ZONES (NR_DZONE_NUM+NR_INDIRECTS+(long)NR_INDIRECTS*NR_INDIRECTS)
/* max zones in a file */
#define printf printk