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NL_ARGMAX is the maximum number of positional arguments supported by printf(3). Prior to r308145 it was declared as 99 and not enforced. r308145 added enforcement and increased the value to 64k. Unfortunately, development versions of PostgreSQL used the system definition to allocate and zero an NL_ARGMAX * 4 sized array on the stack of its snprintf implementation with measurable performance impacts. This has been fixed in new PostgreSQL versions, but it is possible that other programs suffer from this problem. A value of 4096 puts us on par with Linux and is certainly large enough for any reasonable program. Reviewed by: mjg Reported by: mjg Approved by: re (gjb) Differential revision: https://reviews.freebsd.org/D17387 Differential revision: https://reviews.freebsd.org/D8286
150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)limits.h 8.2 (Berkeley) 1/4/94
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* $FreeBSD$
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*/
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#ifndef _LIMITS_H_
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#define _LIMITS_H_
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#include <sys/cdefs.h>
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#if __POSIX_VISIBLE
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_LINK_MAX 8
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_NAME_MAX 14
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#define _POSIX_PIPE_BUF 512
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#define _POSIX_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#if __POSIX_VISIBLE >= 200112
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#define _POSIX_CHILD_MAX 25
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#define _POSIX_NGROUPS_MAX 8
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#define _POSIX_OPEN_MAX 20
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#define _POSIX_PATH_MAX 256
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#define _POSIX_TZNAME_MAX 6
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#else
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_NGROUPS_MAX 0
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#define _POSIX_OPEN_MAX 16
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#define _POSIX_PATH_MAX 255
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#define _POSIX_TZNAME_MAX 3
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#endif
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#if __POSIX_VISIBLE >= 200112
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#define BC_BASE_MAX 99 /* max ibase/obase values in bc(1) */
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#define BC_DIM_MAX 2048 /* max array elements in bc(1) */
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#define BC_SCALE_MAX 99 /* max scale value in bc(1) */
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#define BC_STRING_MAX 1000 /* max const string length in bc(1) */
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#define CHARCLASS_NAME_MAX 14 /* max character class name size */
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#define COLL_WEIGHTS_MAX 10 /* max weights for order keyword */
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#define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */
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#define LINE_MAX 2048 /* max bytes in an input line */
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#define RE_DUP_MAX 255 /* max RE's in interval notation */
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#define _POSIX2_BC_BASE_MAX 99
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#define _POSIX2_BC_DIM_MAX 2048
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#define _POSIX2_BC_SCALE_MAX 99
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#define _POSIX2_BC_STRING_MAX 1000
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#define _POSIX2_CHARCLASS_NAME_MAX 14
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#define _POSIX2_COLL_WEIGHTS_MAX 2
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#define _POSIX2_EQUIV_CLASS_MAX 2
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#define _POSIX2_EXPR_NEST_MAX 32
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#define _POSIX2_LINE_MAX 2048
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#define _POSIX2_RE_DUP_MAX 255
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#endif
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#endif
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#if __POSIX_VISIBLE >= 199309
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#define _POSIX_AIO_LISTIO_MAX 2
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#define _POSIX_AIO_MAX 1
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#define _POSIX_DELAYTIMER_MAX 32
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#define _POSIX_MQ_OPEN_MAX 8
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#define _POSIX_MQ_PRIO_MAX 32
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#define _POSIX_RTSIG_MAX 8
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#define _POSIX_SEM_NSEMS_MAX 256
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#define _POSIX_SEM_VALUE_MAX 32767
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#define _POSIX_SIGQUEUE_MAX 32
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#define _POSIX_TIMER_MAX 32
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#define _POSIX_CLOCKRES_MIN 20000000
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#endif
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#if __POSIX_VISIBLE >= 199506
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#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
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#define _POSIX_THREAD_KEYS_MAX 128
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#define _POSIX_THREAD_THREADS_MAX 64
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#endif
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#if __POSIX_VISIBLE >= 200112
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#define _POSIX_HOST_NAME_MAX 255
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#define _POSIX_LOGIN_NAME_MAX 9
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#define _POSIX_SS_REPL_MAX 4
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#define _POSIX_SYMLINK_MAX 255
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#define _POSIX_SYMLOOP_MAX 8
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#define _POSIX_TRACE_EVENT_NAME_MAX 30
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#define _POSIX_TRACE_NAME_MAX 8
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#define _POSIX_TRACE_SYS_MAX 8
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#define _POSIX_TRACE_USER_EVENT_MAX 32
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#define _POSIX_TTY_NAME_MAX 9
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#define _POSIX_RE_DUP_MAX _POSIX2_RE_DUP_MAX
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#endif
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#if __XSI_VISIBLE || __POSIX_VISIBLE >= 200809
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#define NL_ARGMAX 4096 /* max # of position args for printf */
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#define NL_MSGMAX 32767
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#define NL_SETMAX 255
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#define NL_TEXTMAX 2048
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#endif
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#if __XSI_VISIBLE
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#define _XOPEN_IOV_MAX 16
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#define _XOPEN_NAME_MAX 255
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#define _XOPEN_PATH_MAX 1024
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#define PASS_MAX 128 /* _PASSWORD_LEN from <pwd.h> */
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#define NL_LANGMAX 31 /* max LANG name length */
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#define NL_NMAX 1
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#endif
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#define MB_LEN_MAX 6 /* 31-bit UTF-8 */
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#include <sys/limits.h>
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#if __POSIX_VISIBLE
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#include <sys/syslimits.h>
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#endif
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#endif /* !_LIMITS_H_ */
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