const.h ( File view )

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			/* Copyright (C) 1995 by Prentice-Hall, Inc.  Permission is hereby granted
 * to redistribute the binary and source programs of this system for
 * educational or research purposes.  For other use, written permission from
 * Prentice-Hall is required.  
 */

#define EXTERN        extern	/* used in *.h files */
#define PRIVATE       static	/* PRIVATE x limits the scope of x */
#define PUBLIC			/* PUBLIC is the opposite of PRIVATE */
#define FORWARD       static	/* some compilers require this to be 'static'*/

#define TRUE               1	/* used for turning integers into Booleans */
#define FALSE              0	/* used for turning integers into Booleans */

#define HZ	          60	/* clock freq (software settable on IBM-PC) */
#define BLOCK_SIZE      1024	/* # bytes in a disk block */
#define SUPER_USER (uid_t) 0	/* uid_t of superuser */

#define MAJOR	           8	/* major device = (dev>>MAJOR) & 0377 */
#define MINOR	           0	/* minor device = (dev>>MINOR) & 0377 */

#define NULL     ((void *)0)	/* null pointer */
#define CPVEC_NR          16	/* max # of entries in a SYS_VCOPY request */
#define NR_IOREQS	MIN(NR_BUFS, 64)
				/* maximum number of entries in an iorequest */

#define NR_SEGS            3	/* # segments per process */
#define T                  0	/* proc[i].mem_map[T] is for text */
#define D                  1	/* proc[i].mem_map[D] is for data */
#define S                  2	/* proc[i].mem_map[S] is for stack */

/* Process numbers of some important processes. */
#define MM_PROC_NR         0	/* process number of memory manager */
#define FS_PROC_NR         1	/* process number of file system */
#define INET_PROC_NR       2	/* process number of the TCP/IP server */
#define INIT_PROC_NR	(INET_PROC_NR + ENABLE_NETWORKING)
				/* init -- the process that goes multiuser */
#define LOW_USER	(INET_PROC_NR + ENABLE_NETWORKING)
				/* first user not part of operating system */

/* Miscellaneous */
#define BYTE            0377	/* mask for 8 bits */
#define READING            0	/* copy data to user */
#define WRITING            1	/* copy data from user */
#define NO_NUM        0x8000	/* used as numerical argument to panic() */
#define NIL_PTR   (char *) 0	/* generally useful expression */
#define HAVE_SCATTERED_IO  1	/* scattered I/O is now standard */

/* Macros. */
#define MAX(a, b)   ((a) > (b) ? (a) : (b))
#define MIN(a, b)   ((a) < (b) ? (a) : (b))

/* Number of tasks. */
#define NR_TASKS	(9 + ENABLE_WINI + ENABLE_SCSI + ENABLE_CDROM \
			+ ENABLE_NETWORKING + 2 * ENABLE_AUDIO)

/* Memory is allocated in clicks. */
#if (CHIP == INTEL)
#define CLICK_SIZE       256	/* unit in which memory is allocated */
#define CLICK_SHIFT        8	/* log2 of CLICK_SIZE */
#endif

#if (CHIP == SPARC) || (CHIP == M68000)
#define CLICK_SIZE	4096	/* unit in which memory is alocated */
#define CLICK_SHIFT	  12	/* 2log of CLICK_SIZE */
#endif

#define click_to_round_k(n) \
	((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))
#if CLICK_SIZE < 1024
#define k_to_click(n) ((n) * (1024 / CLICK_SIZE))
#else
#define k_to_click(n) ((n) / (CLICK_SIZE / 1024))
#endif

#define ABS    
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Name Size Date
linux0.00 B0%|04-10-07
boot0.00 B04-10-07|15:01
bootsect.s12.49 kB08-01-04|21:38
head.s13.22 kB08-01-04|21:38
setup.s12.42 kB08-01-04|21:38
fs0.00 B04-10-07|15:01
bitmap.c8.46 kB02-09-04|13:12
block_dev.c3.95 kB02-09-04|13:12
buffer.c17.71 kB02-09-04|13:12
char_dev.c4.09 kB02-09-04|13:12
exec.c18.90 kB02-09-04|13:12
fcntl.c3.33 kB02-09-04|13:12
file_dev.c4.82 kB02-09-04|13:12
file_table.c209.00 B02-09-04|13:12
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ioctl.c1.94 kB02-09-04|13:12
Makefile6.80 kB08-01-04|21:45
namei.c37.20 kB02-09-04|13:12
open.c10.00 kB02-09-04|13:12
pipe.c5.42 kB02-09-04|13:12
read_write.c5.86 kB02-09-04|13:12
stat.c2.69 kB02-09-04|13:12
super.c13.57 kB02-09-04|13:12
truncate.c2.46 kB02-09-04|13:12
include0.00 B04-10-07|15:01
a.out.h8.22 kB02-09-04|13:14
asm0.00 B04-10-07|15:01
io.h772.00 B02-09-04|13:14
memory.h1.03 kB08-01-04|22:13
segment.h2.50 kB02-09-04|13:14
system.h4.08 kB02-09-04|13:14
const.h589.00 B02-09-04|13:14
ctype.h1.68 kB02-09-04|13:14
errno.h2.30 kB02-09-04|13:14
fcntl.h3.30 kB02-09-04|13:14
linux0.00 B04-10-07|15:01
config.h2.16 kB02-09-04|13:14
fs.h9.72 kB02-09-04|13:14
hdreg.h2.94 kB02-09-04|13:14
head.h760.00 B02-09-04|13:14
kernel.h1.44 kB02-09-04|13:14
mm.h473.00 B02-09-04|13:14
sched.h13.25 kB02-09-04|13:14
sys.h5.41 kB02-09-04|13:14
tty.h3.93 kB02-09-04|13:14
signal.h4.01 kB02-09-04|13:14
stdarg.h1.77 kB02-09-04|13:14
stddef.h378.00 B02-09-04|13:14
string.h21.75 kB02-09-04|13:14
sys0.00 B04-10-07|15:01
stat.h2.37 kB02-09-04|13:14
times.h377.00 B02-09-04|13:14
types.h1.10 kB02-09-04|13:14
utsname.h423.00 B02-09-04|13:14
wait.h1.48 kB02-09-04|13:14
termios.h13.58 kB02-09-04|13:14
time.h1.81 kB02-09-04|13:14
unistd.h9.21 kB02-09-04|13:14
utime.h392.00 B02-09-04|13:14
init0.00 B04-10-07|15:01
main.c12.52 kB02-09-04|13:12
kernel0.00 B04-10-07|15:01
asm.s5.10 kB08-01-04|22:48
blk_drv0.00 B04-10-07|15:01
blk.h5.69 kB02-09-04|13:14
floppy.c23.49 kB02-09-04|13:12
hd.c17.14 kB02-09-04|13:12
ll_rw_blk.c7.59 kB02-09-04|13:12
Makefile4.25 kB08-01-04|22:53
ramdisk.c6.13 kB02-09-04|13:12
chr_drv0.00 B04-10-07|15:01
console.c30.91 kB02-09-04|13:12
keyboard.S21.04 kB08-01-04|22:59
Makefile4.81 kB08-01-04|22:59
rs_io.s5.75 kB08-01-04|22:59
serial.c2.91 kB02-09-04|13:12
tty_io.c18.40 kB02-09-04|13:12
tty_ioctl.c10.70 kB02-09-04|13:12
exit.c8.08 kB02-09-04|13:12
fork.c6.78 kB15-07-07|22:10
math0.00 B04-10-07|15:01
Makefile3.21 kB08-01-04|23:01
math_emulate.c2.08 kB02-09-04|13:12
mktime.c2.72 kB02-09-04|13:12
panic.c952.00 B02-09-04|13:12
printk.c1.75 kB02-09-04|13:12
sched.c18.57 kB16-07-07|21:23
signal.c5.61 kB02-09-04|13:12
sys.c7.62 kB02-09-04|13:12
system_call.s12.53 kB08-01-04|22:48
traps.c8.29 kB04-10-07|14:57
vsprintf.c9.96 kB02-09-04|13:12
lib0.00 B04-10-07|15:01
close.c397.00 B02-09-04|13:12
ctype.c1.72 kB02-09-04|13:12
dup.c401.00 B02-09-04|13:12
errno.c66.00 B02-09-04|13:12
execve.c607.00 B02-09-04|13:12
Makefile4.83 kB08-01-04|22:30
malloc.c13.50 kB02-09-04|13:12
open.c1.22 kB02-09-04|13:12
setsid.c382.00 B02-09-04|13:12
string.c199.00 B02-09-04|13:12
wait.c774.00 B02-09-04|13:12
write.c545.00 B02-09-04|13:12
_exit.c616.00 B02-09-04|13:12
Makefile8.58 kB08-01-04|22:21
mm0.00 B04-10-07|15:01
Makefile2.91 kB08-01-04|22:34
memory.c25.10 kB02-09-04|13:12
page.s842.00 B08-01-04|22:34
tools0.00 B04-10-07|15:01
build.c8.12 kB02-09-04|13:12
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