1 /* $OpenBSD: syslimits.h,v 1.10 2005/12/31 19:29:39 millert Exp $ */
2 /* $NetBSD: syslimits.h,v 1.12 1995/10/05 05:26:19 thorpej Exp $ */
3
4 /*
5 * Copyright (c) 1988, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)syslimits.h 8.1 (Berkeley) 6/2/93
33 */
34
35 #include <sys/cdefs.h>
36
37 #if __POSIX_VISIBLE || __XPG_VISIBLE || __BSD_VISIBLE
38 #define ARG_MAX (256 * 1024) /* max bytes for an exec function */
39 #define CHILD_MAX 80 /* max simultaneous processes */
40 #define LINK_MAX 32767 /* max file link count */
41 #define MAX_CANON 255 /* max bytes in term canon input line */
42 #define MAX_INPUT 255 /* max bytes in terminal input */
43 #define NAME_MAX 255 /* max bytes in a file name */
44 #define NGROUPS_MAX 16 /* max supplemental group id's */
45 #define OPEN_MAX 64 /* max open files per process */
46 #define PATH_MAX 1024 /* max bytes in pathname */
47 #define PIPE_BUF 512 /* max bytes for atomic pipe writes */
48 #define SYMLINK_MAX PATH_MAX /* max bytes in a symbolic link */
49 #define SYMLOOP_MAX 32 /* max symlinks per path (for loops) */
50
51 #define BC_BASE_MAX INT_MAX /* max ibase/obase values in bc(1) */
52 #define BC_DIM_MAX 65535 /* max array elements in bc(1) */
53 #define BC_SCALE_MAX INT_MAX /* max scale value in bc(1) */
54 #define BC_STRING_MAX INT_MAX /* max const string length in bc(1) */
55 #define COLL_WEIGHTS_MAX 2 /* max weights for order keyword */
56 #define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */
57 #define LINE_MAX 2048 /* max bytes in an input line */
58 #ifndef RE_DUP_MAX
59 #define RE_DUP_MAX 255 /* max RE's in interval notation */
60 #endif
61
62 #if __XPG_VISIBLE
63 #define IOV_MAX 1024 /* max # of iov's (readv,sendmsg,etc) */
64 #define NZERO 20 /* default "nice" */
65 #endif /* __XPG_VISIBLE */
66
67 #endif /* __POSIX_VISIBLE || __XPG_VISIBLE || __BSD_VISIBLE */
68
69 #if __XPG_VISIBLE >= 500 || __POSIX_VISIBLE >= 199506 || __BSD_VISIBLE
70 #define TTY_NAME_MAX 260 /* max tty device name length w/ NUL */
71 #define LOGIN_NAME_MAX 32 /* max login name length w/ NUL */
72 #endif /* __XPG_VISIBLE >= 500 || __POSIX_VISIBLE >= 199506 || __BSD_VISIBLE */