96 lines
4.3 KiB
C
96 lines
4.3 KiB
C
/* Copyright (C) 1987 by Prentice-Hall, Inc. Permission is hereby granted to
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* private individuals and educational institutions to modify and
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* redistribute the binary and source programs of this system to other
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* private individuals and educational institutions for educational and
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* research purposes. For corporate or commercial use, permission from
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* Prentice-Hall is required. In general, such permission will be granted,
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* subject to a few conditions.
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*/
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#ifndef i8088
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#ifndef ATARI_ST
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#error Either i8088 or ATARI ST must be defined
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#endif
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#endif
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#define EXTERN extern /* used in *.h files */
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#define PRIVATE static /* PRIVATE x limits the scope of x */
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#define PUBLIC /* PUBLIC is the opposite of PRIVATE */
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#define FORWARD /* some compilers require this to be 'static' */
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#define TRUE 1 /* used for turning integers into Booleans */
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#define FALSE 0 /* used for turning integers into Booleans */
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#define HZ 60 /* clock freq (software settable on IBM-PC) */
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#define BLOCK_SIZE 1024 /* # bytes in a disk block */
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#define SUPER_USER (uid) 0 /* uid of superuser */
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#define MAJOR 8 /* major device = (dev>>MAJOR) & 0377 */
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#define MINOR 0 /* minor device = (dev>>MINOR) & 0377 */
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#ifdef AM_KERNEL
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#define NR_TASKS 13 /* must be 5 more than without amoeba */
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#else
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#define NR_TASKS 8 /* number of tasks in the transfer vector */
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#endif
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#define NR_PROCS 16 /* number of slots in proc table */
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#define NR_SEGS 3 /* # segments per process */
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#define T 0 /* proc[i].mem_map[T] is for text */
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#define D 1 /* proc[i].mem_map[D] is for data */
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#define S 2 /* proc[i].mem_map[S] is for stack */
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#define MAX_P_LONG 2147483647 /* maximum positive long, i.e. 2**31 - 1 */
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/* Memory is allocated in clicks. */
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#ifdef i8088
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#define CLICK_SIZE 0020 /* unit in which memory is allocated */
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#define CLICK_SHIFT 4 /* log2 of CLICK_SIZE */
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#endif
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#ifdef ATARI_ST
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#define CLICK_SIZE 256 /* unit in which memory is allocated */
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#define CLICK_SHIFT 8 /* log2 of CLICK_SIZE */
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#endif
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/* Process numbers of some important processes */
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#define MM_PROC_NR 0 /* process number of memory manager */
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#define FS_PROC_NR 1 /* process number of file system */
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#define INIT_PROC_NR 2 /* init -- the process that goes multiuser */
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#define LOW_USER 2 /* first user not part of operating system */
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/* Miscellaneous */
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#define BYTE 0377 /* mask for 8 bits */
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#define TO_USER 0 /* flag telling to copy from fs to user */
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#define FROM_USER 1 /* flag telling to copy from user to fs */
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#define READING 0 /* copy data to user */
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#define WRITING 1 /* copy data from user */
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#ifndef ATARI_ST
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#define ABS -999 /* this process means absolute memory */
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#endif
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#define WORD_SIZE 2 /* number of bytes per word */
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#define NIL_PTR (char *) 0 /* generally useful expression */
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#define NO_NUM 0x8000 /* used as numerical argument to panic() */
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#define MAX_PATH 128 /* max length of path names */
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#define SIG_PUSH_BYTES 8 /* how many bytes pushed by signal */
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#define MAX_ISTACK_BYTES 2048 /* maximum initial stack size for EXEC */
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/* Device numbers of root (RAM) and boot (fd0) devices. */
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#define ROOT_DEV (dev_nr) 256 /* major-minor device number of root dev */
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#define BOOT_DEV (dev_nr) 512 /* major-minor device number of boot diskette */
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/* Flag bits for i_mode in the inode. */
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#define I_TYPE 0170000 /* this field gives inode type */
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#define I_REGULAR 0100000 /* regular file, not dir or special */
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#define I_BLOCK_SPECIAL 0060000 /* block special file */
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#define I_DIRECTORY 0040000 /* file is a directory */
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#define I_CHAR_SPECIAL 0020000 /* character special file */
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#define I_SET_UID_BIT 0004000 /* set effective uid on exec */
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#define I_SET_GID_BIT 0002000 /* set effective gid on exec */
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#define ALL_MODES 0006777 /* all bits for user, group and others */
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#define RWX_MODES 0000777 /* mode bits for RWX only */
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#define R_BIT 0000004 /* Rwx protection bit */
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#define W_BIT 0000002 /* rWx protection bit */
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#define X_BIT 0000001 /* rwX protection bit */
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#define I_NOT_ALLOC 0000000 /* this inode is free */
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