1 /* Minimum guaranteed maximum values for system limits. Linux version. 2 Copyright (C) 1993-1998,2000,2002,2003,2004 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 not, 17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 18 Boston, MA 02111-1307, USA. */ 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 35 /* The kernel sources contain a file with all the needed information. */ 36 #include <linux/limits.h> 37 38 /* Have to remove NR_OPEN? */ 39 #ifdef __undef_NR_OPEN 40 # undef NR_OPEN 41 # undef __undef_NR_OPEN 42 #endif 43 /* Have to remove LINK_MAX? */ 44 #ifdef __undef_LINK_MAX 45 # undef LINK_MAX 46 # undef __undef_LINK_MAX 47 #endif 48 /* Have to remove OPEN_MAX? */ 49 #ifdef __undef_OPEN_MAX 50 # undef OPEN_MAX 51 # undef __undef_OPEN_MAX 52 #endif 53 54 /* The number of data keys per process. */ 55 #define _POSIX_THREAD_KEYS_MAX 128 56 /* This is the value this implementation supports. */ 57 #define PTHREAD_KEYS_MAX 1024 58 59 /* Controlling the iterations of destructors for thread-specific data. */ 60 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 61 /* Number of iterations this implementation does. */ 62 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS 63 64 /* The number of threads per process. */ 65 #define _POSIX_THREAD_THREADS_MAX 64 66 /* We have no predefined limit on the number of threads. */ 67 #undef PTHREAD_THREADS_MAX 68 69 /* Maximum amount by which a process can descrease its asynchronous I/O 70 priority level. */ 71 #define AIO_PRIO_DELTA_MAX 20 72 73 /* Minimum size for a thread. We are free to choose a reasonable value. */ 74 #define PTHREAD_STACK_MIN 16384 75 76 /* Maximum number of timer expiration overruns. */ 77 #define DELAYTIMER_MAX 2147483647 78 79 /* Maximum tty name length. */ 80 #define TTY_NAME_MAX 32 81 82 /* Maximum login name length. This is arbitrary. */ 83 #define LOGIN_NAME_MAX 256 84 85 /* Maximum host name length. */ 86 #define HOST_NAME_MAX 64 87 88 /* Maximum message queue priority level. */ 89 #define MQ_PRIO_MAX 32768 90 91 /* Maximum value the semaphore can have. */ 92 #define SEM_VALUE_MAX (2147483647) 93
