usr/src/sys/sys/syslimits.h

/*
 * 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 */