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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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std_unix
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pax
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limits.h
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1989-01-07
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/* $Source: /u/mark/src/pax/RCS/limits.h,v $
*
* $Revision: 1.1 $
*
* limits.h - POSIX compatible defnitions for some of <limits.h>
*
* DESCRIPTION
*
* We need to include <limits.h> if this system is being compiled with an
* ANSI standard C compiler, or if we are running on a POSIX confomrming
* system. If the manifest constant _POSIX_SOURCE is not defined when
* <limits.h> is included, then none of the POSIX constants are defined
* and we need to define them here. It's a bit wierd, but it works.
*
* These values where taken from the IEEE P1003.1 standard, draft 12.
* All of the values below are the MINIMUM values allowed by the standard.
* Not all values are used by the PAX program, but they are included for
* completeness, and for support of future enhancements. Please see
* section 2.9 of the draft standard for more information on the following
* constants.
*
* AUTHOR
*
* Mark H. Colburn, NAPS International (mark@jhereg.mn.org)
*
* Sponsored by The USENIX Association for public distribution.
*
* Copyright (c) 1989 Mark H. Colburn.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by Mark H. Colburn and sponsored by The USENIX Association.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _PAX_LIMITS_H
#define _PAX_LIMITS_H
/* Headers */
#if defined(__STDC__) || defined(_POSIX_SOURCE)
# include <limits.h>
#endif
/* Defines */
#ifndef _POSIX_SOURCE
#define MAX_INPUT 256 /* Max numbef of bytes in terminal input */
#define NGROUPS_MAX 1 /* Max number of suplemental group id's */
#define PASS_MAX 8 /* Max number of bytes in a password */
#define PID_MAX 30000 /* Max value for a process ID */
#define UID_MAX 32000 /* Max value for a user or group ID */
#define ARG_MAX 4096 /* Nax number of bytes passed to exec */
#define CHILD_MAX 6 /* Max number of simultaneous processes */
#define MAX_CANON 256 /* Max numbef of bytes in a cononical queue */
#define OPEN_MAX 16 /* Nax number of open files per process */
#define NAME_MAX 14 /* Max number of bytes in a file name */
#define PATH_MAX 255 /* Max number of bytes in pathname */
#define LINK_MAX 8 /* Max value of a file's link count */
#define PIPE_BUF 512 /* Max number of bytes for pipe reads */
#endif /* _POSIX_SOURCE */
#endif /* _PAX_LIMITS_H */