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| 2 | pj | 1 | /* Copyright (C) 1991, 1992, 1993, 1996, 1998 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
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| 3 | |||
| 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 Library General Public License as |
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| 6 | published by the Free Software Foundation; either version 2 of the |
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| 7 | License, or (at your option) any later version. |
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| 8 | |||
| 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 | Library General Public License for more details. |
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| 13 | |||
| 14 | You should have received a copy of the GNU Library General Public |
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| 15 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
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| 16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | Boston, MA 02111-1307, USA. */ |
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| 18 | |||
| 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 | |||
| 25 | #ifndef _BITS_POSIX1_LIM_H |
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| 26 | #define _BITS_POSIX1_LIM_H 1 |
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| 27 | |||
| 28 | |||
| 29 | /* These are the standard-mandated minimum values. */ |
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| 30 | |||
| 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 | |||
| 34 | /* Minimal number of outstanding asynchronous I/O operations. */ |
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| 35 | #define _POSIX_AIO_MAX 1 |
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| 36 | |||
| 37 | /* Maximum length of arguments to `execve', including environment. */ |
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| 38 | #define _POSIX_ARG_MAX 4096 |
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| 39 | |||
| 40 | /* Maximum simultaneous processes per real user ID. */ |
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| 41 | #define _POSIX_CHILD_MAX 6 |
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| 42 | |||
| 43 | /* Minimal number of timer expiration overruns. */ |
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| 44 | #define _POSIX_DELAYTIMER_MAX 32 |
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| 45 | |||
| 46 | /* Maximum link count of a file. */ |
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| 47 | #define _POSIX_LINK_MAX 8 |
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| 48 | |||
| 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 | |||
| 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 | |||
| 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 | |||
| 59 | /* Maximum number of supported message priorities. */ |
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| 60 | #define _POSIX_MQ_PRIO_MAX 32 |
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| 61 | |||
| 62 | /* Number of simultaneous supplementary group IDs per process. */ |
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| 63 | #define _POSIX_NGROUPS_MAX 0 |
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| 64 | |||
| 65 | /* Number of files one process can have open at once. */ |
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| 66 | #define _POSIX_OPEN_MAX 16 |
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| 67 | |||
| 68 | /* Number of descriptors that a process may examine with `pselect' or |
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| 69 | `select'. */ |
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| 70 | #define _POSIX_FD_SETSIZE _POSIX_OPEN_MAX |
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| 71 | |||
| 72 | /* Number of bytes in a filename. */ |
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| 73 | #define _POSIX_NAME_MAX 14 |
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| 74 | |||
| 75 | /* Number of bytes in a pathname. */ |
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| 76 | #define _POSIX_PATH_MAX 255 |
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| 77 | |||
| 78 | /* Number of bytes than can be written atomically to a pipe. */ |
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| 79 | #define _POSIX_PIPE_BUF 512 |
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| 80 | |||
| 81 | /* Minimal number of realtime signals reserved for the application. */ |
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| 82 | #define _POSIX_RTSIG_MAX 8 |
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| 83 | |||
| 84 | /* Number of semaphores a process can have. */ |
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| 85 | #define _POSIX_SEM_NSEMS_MAX 256 |
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| 86 | |||
| 87 | /* Maximal value of a semaphore. */ |
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| 88 | #define _POSIX_SEM_VALUE_MAX 32767 |
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| 89 | |||
| 90 | /* Number of pending realtime signals. */ |
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| 91 | #define _POSIX_SIGQUEUE_MAX 32 |
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| 92 | |||
| 93 | /* Largest value of a `ssize_t'. */ |
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| 94 | #define _POSIX_SSIZE_MAX 32767 |
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| 95 | |||
| 96 | /* Number of streams a process can have open at once. */ |
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| 97 | #define _POSIX_STREAM_MAX 8 |
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| 98 | |||
| 99 | /* Maximum length of a timezone name (element of `tzname'). */ |
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| 100 | #define _POSIX_TZNAME_MAX 3 |
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| 101 | |||
| 102 | /* Maximum number of connections that can be queued on a socket. */ |
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| 103 | #define _POSIX_QLIMIT 1 |
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| 104 | |||
| 105 | /* Maximum number of bytes that can be buffered on a socket for send |
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| 106 | or receive. */ |
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| 107 | #define _POSIX_HIWAT _POSIX_PIPE_BUF |
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| 108 | |||
| 109 | /* Maximum number of elements in an `iovec' array. */ |
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| 110 | #define _POSIX_UIO_MAXIOV 16 |
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| 111 | |||
| 112 | /* Maximum number of characters in a tty name. */ |
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| 113 | #define _POSIX_TTY_NAME_MAX 9 |
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| 114 | |||
| 115 | /* Number of timer for a process. */ |
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| 116 | #define _POSIX_TIMER_MAX 32 |
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| 117 | |||
| 118 | /* Maximum length of login name. */ |
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| 119 | #define _POSIX_LOGIN_NAME_MAX 9 |
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| 120 | |||
| 121 | /* Maximum clock resolution in nanoseconds. */ |
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| 122 | #define _POSIX_CLOCKRES_MIN 20000000 |
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| 123 | |||
| 124 | |||
| 125 | /* Get the implementation-specific values for the above. */ |
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| 126 | #include <bits/local_lim.h> |
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| 127 | |||
| 128 | |||
| 129 | #ifndef SSIZE_MAX |
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| 130 | # define SSIZE_MAX INT_MAX |
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| 131 | #endif |
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| 132 | |||
| 133 | |||
| 134 | /* This value is a guaranteed minimum maximum. |
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| 135 | The current maximum can be got from `sysconf'. */ |
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| 136 | |||
| 137 | #ifndef NGROUPS_MAX |
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| 138 | # define NGROUPS_MAX _POSIX_NGROUPS_MAX |
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| 139 | #endif |
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| 140 | |||
| 141 | #endif /* bits/posix1_lim.h */ |