1/* Minimum guaranteed maximum values for system limits.  Linux version.
 2   Copyright (C) 1993-2025 Free Software Foundation, Inc.
 3   This file is part of the GNU C Library.
 4
 5   The GNU C Library is free software; you can redistribute it and/or
 6   modify it under the terms of the GNU Lesser General Public License as
 7   published by the Free Software Foundation; either version 2.1 of the
 8   License, or (at your option) any later version.
 9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; see the file COPYING.LIB.  If
17   not, see <https://www.gnu.org/licenses/>.  */
18
19/* The kernel header pollutes the namespace with the NR_OPEN symbol
20   and defines LINK_MAX although filesystems have different maxima.  A
21   similar thing is true for OPEN_MAX: the limit can be changed at
22   runtime and therefore the macro must not be defined.  Remove this
23   after including the header if necessary.  */
24#ifndef NR_OPEN
25# define __undef_NR_OPEN
26#endif
27#ifndef LINK_MAX
28# define __undef_LINK_MAX
29#endif
30#ifndef OPEN_MAX
31# define __undef_OPEN_MAX
32#endif
33#ifndef ARG_MAX
34# define __undef_ARG_MAX
35#endif
36
37/* The kernel sources contain a file with all the needed information.  */
38#include <linux/limits.h>
39
40/* Have to remove NR_OPEN?  */
41#ifdef __undef_NR_OPEN
42# undef NR_OPEN
43# undef __undef_NR_OPEN
44#endif
45/* Have to remove LINK_MAX?  */
46#ifdef __undef_LINK_MAX
47# undef LINK_MAX
48# undef __undef_LINK_MAX
49#endif
50/* Have to remove OPEN_MAX?  */
51#ifdef __undef_OPEN_MAX
52# undef OPEN_MAX
53# undef __undef_OPEN_MAX
54#endif
55/* Have to remove ARG_MAX?  */
56#ifdef __undef_ARG_MAX
57# undef ARG_MAX
58# undef __undef_ARG_MAX
59#endif
60
61/* The number of data keys per process.  */
62#define _POSIX_THREAD_KEYS_MAX	128
63/* This is the value this implementation supports.  */
64#define PTHREAD_KEYS_MAX	1024
65
66/* Controlling the iterations of destructors for thread-specific data.  */
67#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS	4
68/* Number of iterations this implementation does.  */
69#define PTHREAD_DESTRUCTOR_ITERATIONS	_POSIX_THREAD_DESTRUCTOR_ITERATIONS
70
71/* The number of threads per process.  */
72#define _POSIX_THREAD_THREADS_MAX	64
73/* We have no predefined limit on the number of threads.  */
74#undef PTHREAD_THREADS_MAX
75
76/* Maximum amount by which a process can decrease its asynchronous I/O
77   priority level.  */
78#define AIO_PRIO_DELTA_MAX	20
79
80/* Arrange for the definition of PTHREAD_STACK_MIN.  */
81#include <bits/pthread_stack_min-dynamic.h>
82
83/* Maximum number of timer expiration overruns.  */
84#define DELAYTIMER_MAX	2147483647
85
86/* Maximum tty name length.  */
87#define TTY_NAME_MAX		32
88
89/* Maximum login name length.  This is arbitrary.  */
90#define LOGIN_NAME_MAX		256
91
92/* Maximum host name length.  */
93#define HOST_NAME_MAX		64
94
95/* Maximum message queue priority level.  */
96#define MQ_PRIO_MAX		32768
97
98/* Maximum value the semaphore can have.  */
99#define SEM_VALUE_MAX   (2147483647)