1 /* Minimum guaranteed maximum values for system limits. Linux/Alpha 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 Library General Public License as 7 published by the Free Software Foundation; either version 2 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 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public 16 License along with the GNU C Library; see the file COPYING.LIB. If not, 17 see <http://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 34 /* The kernel sources contain a file with all the needed information. */ 35 #include <linux/limits.h> 36 37 /* Have to remove NR_OPEN? */ 38 #ifdef __undef_NR_OPEN 39 # undef NR_OPEN 40 # undef __undef_NR_OPEN 41 #endif 42 /* Have to remove LINK_MAX? */ 43 #ifdef __undef_LINK_MAX 44 # undef LINK_MAX 45 # undef __undef_LINK_MAX 46 #endif 47 /* Have to remove OPEN_MAX? */ 48 #ifdef __undef_OPEN_MAX 49 # undef OPEN_MAX 50 # undef __undef_OPEN_MAX 51 #endif 52 53 /* The number of data keys per process. */ 54 #define _POSIX_THREAD_KEYS_MAX 128 55 /* This is the value this implementation supports. */ 56 #define PTHREAD_KEYS_MAX 1024 57 58 /* Controlling the iterations of destructors for thread-specific data. */ 59 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 60 /* Number of iterations this implementation does. */ 61 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS 62 63 /* The number of threads per process. */ 64 #define _POSIX_THREAD_THREADS_MAX 64 65 /* We have no predefined limit on the number of threads. */ 66 #undef PTHREAD_THREADS_MAX 67 68 /* Maximum amount by which a process can descrease its asynchronous I/O 69 priority level. */ 70 #define AIO_PRIO_DELTA_MAX 20 71 72 /* Minimum size for a thread. We are free to choose a reasonable value. */ 73 #define PTHREAD_STACK_MIN 24576 74 75 /* Maximum number of timer expiration overruns. */ 76 #define DELAYTIMER_MAX 2147483647 77 78 /* Maximum tty name length. */ 79 #define TTY_NAME_MAX 32 80 81 /* Maximum login name length. This is arbitrary. */ 82 #define LOGIN_NAME_MAX 256 83 84 /* Maximum host name length. */ 85 #define HOST_NAME_MAX 64 86 87 /* Maximum message queue priority level. */ 88 #define MQ_PRIO_MAX 32768 89 90 /* Maximum value the semaphore can have. */ 91 #define SEM_VALUE_MAX (2147483647) 92