[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / bits / local_lim.h

/* Minimum guaranteed maximum values for system limits.  Linux version.
   Copyright (C) 1993-2025 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If
   not, see <https://www.gnu.org/licenses/>.  */

/* The kernel header pollutes the namespace with the NR_OPEN symbol
   and defines LINK_MAX although filesystems have different maxima.  A
   similar thing is true for OPEN_MAX: the limit can be changed at
   runtime and therefore the macro must not be defined.  Remove this
   after including the header if necessary.  */
#ifndef NR_OPEN
# define __undef_NR_OPEN
#endif
#ifndef LINK_MAX
# define __undef_LINK_MAX
#endif
#ifndef OPEN_MAX
# define __undef_OPEN_MAX
#endif
#ifndef ARG_MAX
# define __undef_ARG_MAX
#endif

/* The kernel sources contain a file with all the needed information.  */
#include <linux/limits.h>

/* Have to remove NR_OPEN?  */
#ifdef __undef_NR_OPEN
# undef NR_OPEN
# undef __undef_NR_OPEN
#endif
/* Have to remove LINK_MAX?  */
#ifdef __undef_LINK_MAX
# undef LINK_MAX
# undef __undef_LINK_MAX
#endif
/* Have to remove OPEN_MAX?  */
#ifdef __undef_OPEN_MAX
# undef OPEN_MAX
# undef __undef_OPEN_MAX
#endif
/* Have to remove ARG_MAX?  */
#ifdef __undef_ARG_MAX
# undef ARG_MAX
# undef __undef_ARG_MAX
#endif

/* The number of data keys per process.  */
#define _POSIX_THREAD_KEYS_MAX	128
/* This is the value this implementation supports.  */
#define PTHREAD_KEYS_MAX	1024

/* Controlling the iterations of destructors for thread-specific data.  */
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS	4
/* Number of iterations this implementation does.  */
#define PTHREAD_DESTRUCTOR_ITERATIONS	_POSIX_THREAD_DESTRUCTOR_ITERATIONS

/* The number of threads per process.  */
#define _POSIX_THREAD_THREADS_MAX	64
/* We have no predefined limit on the number of threads.  */
#undef PTHREAD_THREADS_MAX

/* Maximum amount by which a process can decrease its asynchronous I/O
   priority level.  */
#define AIO_PRIO_DELTA_MAX	20

/* Arrange for the definition of PTHREAD_STACK_MIN.  */
#include <bits/pthread_stack_min-dynamic.h>

/* Maximum number of timer expiration overruns.  */
#define DELAYTIMER_MAX	2147483647

/* Maximum tty name length.  */
#define TTY_NAME_MAX		32

/* Maximum login name length.  This is arbitrary.  */
#define LOGIN_NAME_MAX		256

/* Maximum host name length.  */
#define HOST_NAME_MAX		64

/* Maximum message queue priority level.  */
#define MQ_PRIO_MAX		32768

/* Maximum value the semaphore can have.  */
#define SEM_VALUE_MAX   (2147483647)
Commit	Line	Data
8f5ca04b	1	/* Minimum guaranteed maximum values for system limits. Linux version.
26420023	2	Copyright (C) 1993-2025 Free Software Foundation, Inc.
54d79e99	3	This file is part of the GNU C Library.
d2f5be2a	4
54d79e99	5	The GNU C Library is free software; you can redistribute it and/or
bc4a86fa RM	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.
28f540f4	9
54d79e99 UD	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
41bdb6e2	13	Lesser General Public License for more details.
28f540f4	14
41bdb6e2	15	You should have received a copy of the GNU Lesser General Public
bc4a86fa	16	License along with the GNU C Library; see the file COPYING.LIB. If
5a82c748	17	not, see <https://www.gnu.org/licenses/>. */
28f540f4	18
104d0690	19	/* The kernel header pollutes the namespace with the NR_OPEN symbol
bb790106 UD	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. */
d2537a47 UD	24	#ifndef NR_OPEN
	25	# define __undef_NR_OPEN
	26	#endif
104d0690 UD	27	#ifndef LINK_MAX
	28	# define __undef_LINK_MAX
	29	#endif
bb790106 UD	30	#ifndef OPEN_MAX
	31	# define __undef_OPEN_MAX
	32	#endif
f96853be UD	33	#ifndef ARG_MAX
	34	# define __undef_ARG_MAX
	35	#endif
d2537a47	36
8f5ca04b RM	37	/* The kernel sources contain a file with all the needed information. */
8f5ca04b RM	38	#include <linux/limits.h>
cbdee279	39
d2537a47 UD	40	/* Have to remove NR_OPEN? */
	41	#ifdef __undef_NR_OPEN
	42	# undef NR_OPEN
	43	# undef __undef_NR_OPEN
	44	#endif
104d0690 UD	45	/* Have to remove LINK_MAX? */
	46	#ifdef __undef_LINK_MAX
	47	# undef LINK_MAX
	48	# undef __undef_LINK_MAX
	49	#endif
bb790106 UD	50	/* Have to remove OPEN_MAX? */
	51	#ifdef __undef_OPEN_MAX
	52	# undef OPEN_MAX
	53	# undef __undef_OPEN_MAX
	54	#endif
f96853be UD	55	/* Have to remove ARG_MAX? */
	56	#ifdef __undef_ARG_MAX
	57	# undef ARG_MAX
	58	# undef __undef_ARG_MAX
	59	#endif
d2537a47	60
bc4a86fa RM	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
d13733c1	76	/* Maximum amount by which a process can decrease its asynchronous I/O
cbdee279 UD	77	priority level. */
cbdee279 UD	78	#define AIO_PRIO_DELTA_MAX 20
7d78ab99	79
aaacde11 FW	80	/* Arrange for the definition of PTHREAD_STACK_MIN. */
aaacde11 FW	81	#include <bits/pthread_stack_min-dynamic.h>
bc4a86fa RM	82
	83	/* Maximum number of timer expiration overruns. */
	84	#define DELAYTIMER_MAX 2147483647
	85
7d78ab99 UD	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
932dfea7 UD	91
	92	/* Maximum host name length. */
	93	#define HOST_NAME_MAX 64
1b82c6c7 UD	94
	95	/* Maximum message queue priority level. */
	96	#define MQ_PRIO_MAX 32768
bc4a86fa RM	97
	98	/* Maximum value the semaphore can have. */
	99	#define SEM_VALUE_MAX (2147483647)