50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* RCS: $Header$ */
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#ifndef __SYSTEM_INCLUDED__
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#define __SYSTEM_INCLUDED__
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struct _sys_fildes {
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int o_fd; /* UNIX filedescriptor */
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int o_flags; /* flags for open; 0 if not used */
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};
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typedef struct _sys_fildes File;
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extern File _sys_ftab[];
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/* flags for sys_open() */
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#define OP_READ 01
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#define OP_WRITE 02
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#define OP_APPEND 04
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/* flags for sys_access() */
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#define AC_EXIST 00
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#define AC_READ 04
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#define AC_WRITE 02
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#define AC_EXEC 01
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/* flags for sys_stop() */
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#define S_END 0
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#define S_EXIT 1
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#define S_ABORT 2
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/* standard file decsriptors */
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#define STDIN &_sys_ftab[0]
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#define STDOUT &_sys_ftab[1]
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#define STDERR &_sys_ftab[2]
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/* maximum number of open files */
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#define SYS_NOPEN 20
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/* return value for sys_break */
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#define ILL_BREAK ((char *)0)
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/* system's idea of block */
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#ifndef BUFSIZ
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#define BUFSIZ 1024
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#endif
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#endif /* __SYSTEM_INCLUDED__ */
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