sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h

   1 /* Minimum guaranteed maximum values for system limits.  Linux version.
   2    Copyright (C) 1993-2015 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public License as
   8    published by the Free Software Foundation; either version 2.1 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* The kernel header pollutes the namespace with the NR_OPEN symbol
  21    and defines LINK_MAX although filesystems have different maxima.  A
  22    similar thing is true for OPEN_MAX: the limit can be changed at
  23    runtime and therefore the macro must not be defined.  Remove this
  24    after including the header if necessary.  */
  25 #ifndef NR_OPEN
  26 # define __undef_NR_OPEN
  27 #endif
  28 #ifndef LINK_MAX
  29 # define __undef_LINK_MAX
  30 #endif
  31 #ifndef OPEN_MAX
  32 # define __undef_OPEN_MAX
  33 #endif
  34 #ifndef ARG_MAX
  35 # define __undef_ARG_MAX
  36 #endif
  37
  38 /* The kernel sources contain a file with all the needed information.  */
  39 #include <linux/limits.h>
  40
  41 /* Have to remove NR_OPEN?  */
  42 #ifdef __undef_NR_OPEN
  43 # undef NR_OPEN
  44 # undef __undef_NR_OPEN
  45 #endif
  46 /* Have to remove LINK_MAX?  */
  47 #ifdef __undef_LINK_MAX
  48 # undef LINK_MAX
  49 # undef __undef_LINK_MAX
  50 #endif
  51 /* Have to remove OPEN_MAX?  */
  52 #ifdef __undef_OPEN_MAX
  53 # undef OPEN_MAX
  54 # undef __undef_OPEN_MAX
  55 #endif
  56 /* Have to remove ARG_MAX?  */
  57 #ifdef __undef_ARG_MAX
  58 # undef ARG_MAX
  59 # undef __undef_ARG_MAX
  60 #endif
  61
  62 /* The number of data keys per process.  */
  63 #define _POSIX_THREAD_KEYS_MAX  128
  64 /* This is the value this implementation supports.  */
  65 #define PTHREAD_KEYS_MAX        1024
  66
  67 /* Controlling the iterations of destructors for thread-specific data.  */
  68 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS     4
  69 /* Number of iterations this implementation does.  */
  70 #define PTHREAD_DESTRUCTOR_ITERATIONS   _POSIX_THREAD_DESTRUCTOR_ITERATIONS
  71
  72 /* The number of threads per process.  */
  73 #define _POSIX_THREAD_THREADS_MAX       64
  74 /* We have no predefined limit on the number of threads.  */
  75 #undef PTHREAD_THREADS_MAX
  76
  77 /* Maximum amount by which a process can descrease its asynchronous I/O
  78    priority level.  */
  79 #define AIO_PRIO_DELTA_MAX      20
  80
  81 /* Minimum size for a thread.  At least two pages for systems with 64k
  82    pages.  */
  83 #define PTHREAD_STACK_MIN       131072
  84
  85 /* Maximum number of timer expiration overruns.  */
  86 #define DELAYTIMER_MAX  2147483647
  87
  88 /* Maximum tty name length.  */
  89 #define TTY_NAME_MAX            32
  90
  91 /* Maximum login name length.  This is arbitrary.  */
  92 #define LOGIN_NAME_MAX          256
  93
  94 /* Maximum host name length.  */
  95 #define HOST_NAME_MAX           64
  96
  97 /* Maximum message queue priority level.  */
  98 #define MQ_PRIO_MAX             32768
  99
 100 /* Maximum value the semaphore can have.  */
 101 #define SEM_VALUE_MAX   (2147483647)