1 /* Copyright (C) 1990 by Prentice-Hall, Inc. Permission is hereby granted
2 * to redistribute the binary and source programs of this system for
3 * educational or research purposes. For other use, written permission from
4 * Prentice-Hall is required.
7 #define EXTERN extern /* used in *.h files */
8 #define PRIVATE static /* PRIVATE x limits the scope of x */
9 #define PUBLIC /* PUBLIC is the opposite of PRIVATE */
10 #define FORWARD static /* some compilers require this to be 'static'*/
12 #define TRUE 1 /* used for turning integers into Booleans */
13 #define FALSE 0 /* used for turning integers into Booleans */
15 #define HZ 60 /* clock freq (software settable on IBM-PC) */
16 #define BLOCK_SIZE 1024 /* # bytes in a disk block */
17 #define SUPER_USER (uid_t) 0 /* uid_t of superuser */
19 #define MAJOR 8 /* major device = (dev>>MAJOR) & 0377 */
20 #define MINOR 0 /* minor device = (dev>>MINOR) & 0377 */
23 #define NR_TASKS 14 /* must be 5 more than without amoeba */
25 #define NR_TASKS 9 /* number of tasks in the transfer vector */
28 #define NR_PROCS 32 /* number of slots in proc table */
29 #define NR_SEGS 3 /* # segments per process */
30 #define T 0 /* proc[i].mem_map[T] is for text */
31 #define D 1 /* proc[i].mem_map[D] is for data */
32 #define S 2 /* proc[i].mem_map[S] is for stack */
34 #define MAX_P_LONG 2147483647 /* maximum positive long, i.e. 2**31 - 1 */
36 /* Memory is allocated in clicks. */
37 #if (CHIP == INTEL) || (CHIP == M68000)
38 #define CLICK_SIZE 256 /* unit in which memory is allocated */
39 #define CLICK_SHIFT 8 /* log2 of CLICK_SIZE */
42 #define click_to_round_k(n) \
43 ((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))
45 #define k_to_click(n) ((n) * (1024 / CLICK_SIZE))
47 #define k_to_click(n) ((n) / (CLICK_SIZE / 1024))
50 /* Process numbers of some important processes */
51 #define MM_PROC_NR 0 /* process number of memory manager */
52 #define FS_PROC_NR 1 /* process number of file system */
53 #define INIT_PROC_NR 2 /* init -- the process that goes multiuser */
54 #define LOW_USER 2 /* first user not part of operating system */
57 #define BYTE 0377 /* mask for 8 bits */
58 #define TO_USER 0 /* flag telling to copy from fs to user */
59 #define FROM_USER 1 /* flag telling to copy from user to fs */
60 #define READING 0 /* copy data to user */
61 #define WRITING 1 /* copy data from user */
63 #if (MACHINE != ATARI)
64 #define ABS -999 /* this process means absolute memory */
67 #define WORD_SIZE 2 /* number of bytes per word */
69 #define NIL_PTR (char *) 0 /* generally useful expression */
71 #define NO_NUM 0x8000 /* used as numerical argument to panic() */
72 #define SIG_PUSH_BYTES (4*sizeof(int)) /* how many bytes pushed by signal */
74 /* Flag bits for i_mode in the inode. */
75 #define I_TYPE 0170000 /* this field gives inode type */
76 #define I_REGULAR 0100000 /* regular file, not dir or special */
77 #define I_BLOCK_SPECIAL 0060000 /* block special file */
78 #define I_DIRECTORY 0040000 /* file is a directory */
79 #define I_CHAR_SPECIAL 0020000 /* character special file */
80 #define I_NAMED_PIPE 0010000 /* named pipe (FIFO) */
81 #define I_SET_UID_BIT 0004000 /* set effective uid_t on exec */
82 #define I_SET_GID_BIT 0002000 /* set effective gid_t on exec */
83 #define ALL_MODES 0006777 /* all bits for user, group and others */
84 #define RWX_MODES 0000777 /* mode bits for RWX only */
85 #define R_BIT 0000004 /* Rwx protection bit */
86 #define W_BIT 0000002 /* rWx protection bit */
87 #define X_BIT 0000001 /* rwX protection bit */
88 #define I_NOT_ALLOC 0000000 /* this inode is free */