commands/aal/system.h

   1 /*
   2  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
   3  * See the copyright notice in the ACK home directory, in the file "Copyright".
   4  */
   5 /* RCS: $Header$ */
   6 #ifndef __SYSTEM_INCLUDED__
   7 #define __SYSTEM_INCLUDED__
   8
   9 struct _sys_fildes {
  10         int o_fd;       /* UNIX filedescriptor */
  11         int o_flags;    /* flags for open; 0 if not used */
  12 };
  13
  14 typedef struct _sys_fildes File;
  15
  16 extern File _sys_ftab[];
  17
  18 /* flags for sys_open() */
  19 #define OP_READ         01
  20 #define OP_WRITE        02
  21 #define OP_APPEND       04
  22
  23 /* flags for sys_access() */
  24 #define AC_EXIST        00
  25 #define AC_READ         04
  26 #define AC_WRITE        02
  27 #define AC_EXEC         01
  28
  29 /* flags for sys_stop() */
  30 #define S_END   0
  31 #define S_EXIT  1
  32 #define S_ABORT 2
  33
  34 /* standard file decsriptors */
  35 #define STDIN   &_sys_ftab[0]
  36 #define STDOUT  &_sys_ftab[1]
  37 #define STDERR  &_sys_ftab[2]
  38
  39 /* maximum number of open files */
  40 #define SYS_NOPEN       20
  41
  42 /* return value for sys_break */
  43 #define ILL_BREAK       ((char *)0)
  44
  45 /* system's idea of block */
  46 #define BUFSIZ  1024
  47 #endif __SYSTEM_INCLUDED__