4.3BSD-Reno/src/sys/sys/syslimits.h

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/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)syslimits.h	7.3 (Berkeley) 6/28/90
 */

#define	ARG_MAX		20480	/* max bytes for an exec function */
#define	CHILD_MAX	40	/* max simultaneous processes */
#define	LINK_MAX	32767	/* max file link count */
#define	MAX_CANON	255	/* max bytes in terminal canonical input line */
#define	MAX_INPUT	255	/* max bytes in terminal input */
#define	NAME_MAX	255	/* max number of bytes in a file name */
#define	NGROUPS_MAX	16	/* max number of supplemental group id's */
#define	OPEN_MAX	64	/* max open files per process */
#define	PATH_MAX	1024	/* max number of bytes in pathname */
#define	PIPE_BUF	512	/* max number of bytes for atomic pipe writes */