| 1 | /* Copyright (C) 1991-1993,96,98,2000,01,02,2003 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, write to the Free |
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| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 17 | 02111-1307 USA. */ |
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| 18 | |
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| 19 | /* |
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| 20 | * POSIX Standard: 2.9.2 Minimum Values Added to <limits.h> |
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| 21 | * |
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| 22 | * Never include this file directly; use <limits.h> instead. |
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| 23 | */ |
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| 24 | |
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| 25 | #ifndef _BITS_POSIX1_LIM_H |
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| 26 | #define _BITS_POSIX1_LIM_H 1 |
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| 27 | |
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| 28 | |
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| 29 | /* These are the standard-mandated minimum values. */ |
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| 30 | |
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| 31 | /* Minimum number of operations in one list I/O call. */ |
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| 32 | #define _POSIX_AIO_LISTIO_MAX 2 |
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| 33 | |
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| 34 | /* Minimal number of outstanding asynchronous I/O operations. */ |
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| 35 | #define _POSIX_AIO_MAX 1 |
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| 36 | |
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| 37 | /* Maximum length of arguments to `execve', including environment. */ |
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| 38 | #define _POSIX_ARG_MAX 4096 |
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| 39 | |
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| 40 | /* Maximum simultaneous processes per real user ID. */ |
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| 41 | #define _POSIX_CHILD_MAX 6 |
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| 42 | |
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| 43 | /* Minimal number of timer expiration overruns. */ |
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| 44 | #define _POSIX_DELAYTIMER_MAX 32 |
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| 45 | |
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| 46 | /* Maximum link count of a file. */ |
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| 47 | #define _POSIX_LINK_MAX 8 |
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| 48 | |
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| 49 | /* Number of bytes in a terminal canonical input queue. */ |
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| 50 | #define _POSIX_MAX_CANON 255 |
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| 51 | |
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| 52 | /* Number of bytes for which space will be |
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| 53 | available in a terminal input queue. */ |
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| 54 | #define _POSIX_MAX_INPUT 255 |
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| 55 | |
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| 56 | /* Maximum number of message queues open for a process. */ |
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| 57 | #define _POSIX_MQ_OPEN_MAX 8 |
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| 58 | |
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| 59 | /* Maximum number of supported message priorities. */ |
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| 60 | #define _POSIX_MQ_PRIO_MAX 32 |
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| 61 | |
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| 62 | /* Number of simultaneous supplementary group IDs per process. */ |
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| 63 | #ifdef __USE_XOPEN2K |
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| 64 | # define _POSIX_NGROUPS_MAX 8 |
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| 65 | #else |
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| 66 | # define _POSIX_NGROUPS_MAX 0 |
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| 67 | #endif |
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| 68 | |
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| 69 | /* Number of files one process can have open at once. */ |
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| 70 | #define _POSIX_OPEN_MAX 16 |
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| 71 | |
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| 72 | /* Number of descriptors that a process may examine with `pselect' or |
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| 73 | `select'. */ |
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| 74 | #define _POSIX_FD_SETSIZE _POSIX_OPEN_MAX |
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| 75 | |
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| 76 | /* Number of bytes in a filename. */ |
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| 77 | #define _POSIX_NAME_MAX 14 |
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| 78 | |
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| 79 | /* Number of bytes in a pathname. */ |
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| 80 | #define _POSIX_PATH_MAX 256 |
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| 81 | |
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| 82 | /* Number of bytes than can be written atomically to a pipe. */ |
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| 83 | #define _POSIX_PIPE_BUF 512 |
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| 84 | |
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| 85 | /* Minimal number of realtime signals reserved for the application. */ |
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| 86 | #define _POSIX_RTSIG_MAX 8 |
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| 87 | |
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| 88 | /* Number of semaphores a process can have. */ |
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| 89 | #define _POSIX_SEM_NSEMS_MAX 256 |
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| 90 | |
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| 91 | /* Maximal value of a semaphore. */ |
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| 92 | #define _POSIX_SEM_VALUE_MAX 32767 |
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| 93 | |
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| 94 | /* Number of pending realtime signals. */ |
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| 95 | #define _POSIX_SIGQUEUE_MAX 32 |
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| 96 | |
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| 97 | /* Largest value of a `ssize_t'. */ |
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| 98 | #define _POSIX_SSIZE_MAX 32767 |
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| 99 | |
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| 100 | /* Number of streams a process can have open at once. */ |
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| 101 | #define _POSIX_STREAM_MAX 8 |
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| 102 | |
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| 103 | /* Maximum length of a timezone name (element of `tzname'). */ |
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| 104 | #define _POSIX_TZNAME_MAX 6 |
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| 105 | |
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| 106 | /* Maximum number of connections that can be queued on a socket. */ |
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| 107 | #define _POSIX_QLIMIT 1 |
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| 108 | |
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| 109 | /* Maximum number of bytes that can be buffered on a socket for send |
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| 110 | or receive. */ |
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| 111 | #define _POSIX_HIWAT _POSIX_PIPE_BUF |
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| 112 | |
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| 113 | /* Maximum number of elements in an `iovec' array. */ |
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| 114 | #define _POSIX_UIO_MAXIOV 16 |
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| 115 | |
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| 116 | /* Maximum number of characters in a tty name. */ |
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| 117 | #define _POSIX_TTY_NAME_MAX 9 |
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| 118 | |
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| 119 | /* Number of timer for a process. */ |
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| 120 | #define _POSIX_TIMER_MAX 32 |
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| 121 | |
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| 122 | /* Maximum length of login name. */ |
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| 123 | #define _POSIX_LOGIN_NAME_MAX 9 |
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| 124 | |
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| 125 | /* Maximum clock resolution in nanoseconds. */ |
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| 126 | #define _POSIX_CLOCKRES_MIN 20000000 |
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| 127 | |
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| 128 | |
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| 129 | /* Get the implementation-specific values for the above. */ |
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| 130 | #include <bits/local_lim.h> |
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| 131 | |
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| 132 | |
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| 133 | #ifndef SSIZE_MAX |
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| 134 | # define SSIZE_MAX LONG_MAX |
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| 135 | #endif |
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| 136 | |
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| 137 | |
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| 138 | /* This value is a guaranteed minimum maximum. |
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| 139 | The current maximum can be got from `sysconf'. */ |
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| 140 | |
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| 141 | #ifndef NGROUPS_MAX |
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| 142 | # define NGROUPS_MAX 8 |
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| 143 | #endif |
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| 144 | |
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| 145 | #endif /* bits/posix1_lim.h */ |
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