xref: /illumos-gate/usr/src/boot/sys/sys/syslimits.h (revision 199767f8)
1 /*-
2  * Copyright (c) 1988, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 4. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  *	@(#)syslimits.h	8.1 (Berkeley) 6/2/93
30  * $FreeBSD$
31  */
32 
33 #ifndef _SYS_SYSLIMITS_H_
34 #define _SYS_SYSLIMITS_H_
35 
36 #if !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
37 #ifndef _SYS_CDEFS_H_
38 #error this file needs sys/cdefs.h as a prerequisite
39 #endif
40 #ifdef __CC_SUPPORTS_WARNING
41 #warning "No user-serviceable parts inside."
42 #endif
43 #endif
44 
45 /*
46  * Do not add any new variables here.  (See the comment at the end of
47  * the file for why.)
48  */
49 #define	ARG_MAX			262144	/* max bytes for an exec function */
50 #ifndef CHILD_MAX
51 #define	CHILD_MAX		   40	/* max simultaneous processes */
52 #endif
53 #define	LINK_MAX		32767	/* max file link count */
54 #define	MAX_CANON		  255	/* max bytes in term canon input line */
55 #define	MAX_INPUT		  255	/* max bytes in terminal input */
56 #define	NAME_MAX		  255	/* max bytes in a file name */
57 #ifndef NGROUPS_MAX
58 #define	NGROUPS_MAX	 	 1023	/* max supplemental group id's */
59 #endif
60 #ifndef OPEN_MAX
61 #define	OPEN_MAX		   64	/* max open files per process */
62 #endif
63 #define	PATH_MAX		 1024	/* max bytes in pathname */
64 #define	PIPE_BUF		  512	/* max bytes for atomic pipe writes */
65 #define	IOV_MAX			 1024	/* max elements in i/o vector */
66 
67 /*
68  * We leave the following values undefined to force applications to either
69  * assume conservative values or call sysconf() to get the current value.
70  *
71  * HOST_NAME_MAX
72  *
73  * (We should do this for most of the values currently defined here,
74  * but many programs are not prepared to deal with this yet.)
75  */
76 #endif
77