1 unistd.h |
1 /*- |
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2 * Copyright (c) 1989, 1993 |
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3 * The Regents of the University of California. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * 4. Neither the name of the University nor the names of its contributors |
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14 * may be used to endorse or promote products derived from this software |
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15 * without specific prior written permission. |
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16 * |
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17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 * SUCH DAMAGE. |
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28 * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved. |
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29 * @(#)unistd.h 8.2 (Berkeley) 1/7/94 |
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30 * $FreeBSD: src/sys/sys/unistd.h,v 1.41 2005/01/07 02:29:24 imp Exp $ |
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31 */ |
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32 |
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33 #ifndef _SYS_UNISTD_H_ |
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34 #define _SYS_UNISTD_H_ |
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35 |
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36 #include <sys/cdefs.h> |
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37 |
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38 /* |
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39 * POSIX options and option groups we unconditionally do or don't |
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40 * implement. Those options which are implemented (or not) entirely |
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41 * in user mode are defined in <unistd.h>. Please keep this list in |
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42 * alphabetical order. |
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43 * |
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44 * Anything which is defined as zero below **must** have an |
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45 * implementation for the corresponding sysconf() which is able to |
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46 * determine conclusively whether or not the feature is supported. |
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47 * Anything which is defined as other than -1 below **must** have |
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48 * complete headers, types, and function declarations as specified by |
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49 * the POSIX standard; however, if the relevant sysconf() function |
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50 * returns -1, the functions may be stubbed out. |
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51 */ |
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52 #define _POSIX_ADVISORY_INFO -1 |
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53 #define _POSIX_ASYNCHRONOUS_IO 0 |
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54 #define _POSIX_CHOWN_RESTRICTED 1 |
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55 #define _POSIX_CLOCK_SELECTION -1 |
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56 #define _POSIX_CPUTIME -1 |
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57 #define _POSIX_FSYNC 200112L |
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58 #define _POSIX_IPV6 0 |
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59 #define _POSIX_JOB_CONTROL 1 |
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60 #define _POSIX_MAPPED_FILES 200112L |
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61 #define _POSIX_MEMLOCK -1 |
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62 #define _POSIX_MEMLOCK_RANGE 200112L |
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63 #define _POSIX_MEMORY_PROTECTION 200112L |
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64 #define _POSIX_MESSAGE_PASSING -1 |
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65 #define _POSIX_MONOTONIC_CLOCK -1 |
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66 #define _POSIX_NO_TRUNC 1 |
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67 #define _POSIX_PRIORITIZED_IO -1 |
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68 #define _POSIX_PRIORITY_SCHEDULING 200112L |
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69 #define _POSIX_RAW_SOCKETS 200112L |
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70 #define _POSIX_REALTIME_SIGNALS -1 |
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71 #define _POSIX_SEMAPHORES -1 |
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72 #define _POSIX_SHARED_MEMORY_OBJECTS 200112L |
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73 #define _POSIX_SPORADIC_SERVER -1 |
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74 #define _POSIX_SYNCHRONIZED_IO -1 |
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75 #define _POSIX_TIMEOUTS -1 |
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76 #define _POSIX_TYPED_MEMORY_OBJECTS -1 |
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77 #define _POSIX_VDISABLE 0xff |
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78 |
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79 #if __XSI_VISIBLE |
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80 #define _XOPEN_SHM 1 |
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81 #define _XOPEN_STREAMS -1 |
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82 #endif |
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83 |
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84 /* |
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85 * Although we have saved user/group IDs, we do not use them in setuid |
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86 * as described in POSIX 1003.1, because the feature does not work for |
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87 * root. We use the saved IDs in seteuid/setegid, which are not currently |
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88 * part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001 |
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89 * as this is now mandatory. |
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90 */ |
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91 #ifdef _NOT_AVAILABLE |
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92 #define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */ |
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93 #endif |
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94 |
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95 /* Define the POSIX.1 version we target for compliance. */ |
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96 #define _POSIX_VERSION 200112L |
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97 |
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98 /* access function */ |
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99 #define F_OK 0 /* test for existence of file */ |
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100 #define X_OK 0x01 /* test for execute or search permission */ |
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101 #define W_OK 0x02 /* test for write permission */ |
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102 #define R_OK 0x04 /* test for read permission */ |
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103 |
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104 /* whence values for lseek(2) */ |
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105 #ifndef SEEK_SET |
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106 #define SEEK_SET 0 /* set file offset to offset */ |
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107 #define SEEK_CUR 1 /* set file offset to current plus offset */ |
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108 #define SEEK_END 2 /* set file offset to EOF plus offset */ |
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109 #endif |
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110 |
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111 #ifndef _POSIX_SOURCE |
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112 /* whence values for lseek(2); renamed by POSIX 1003.1 */ |
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113 #define L_SET SEEK_SET |
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114 #define L_INCR SEEK_CUR |
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115 #define L_XTND SEEK_END |
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116 #endif |
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117 |
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118 /* configurable pathname variables */ |
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119 #define _PC_LINK_MAX 1 |
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120 #define _PC_MAX_CANON 2 |
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121 #define _PC_MAX_INPUT 3 |
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122 #define _PC_NAME_MAX 4 |
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123 #define _PC_PATH_MAX 5 |
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124 #define _PC_PIPE_BUF 6 |
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125 #define _PC_CHOWN_RESTRICTED 7 |
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126 #define _PC_NO_TRUNC 8 |
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127 #define _PC_VDISABLE 9 |
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128 |
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129 /* |
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130 #if __POSIX_VISIBLE >= 199309 |
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131 #define _PC_ASYNC_IO 53 |
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132 #define _PC_PRIO_IO 54 |
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133 #define _PC_SYNC_IO 55 |
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134 #endif |
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135 |
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136 |
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137 #if __POSIX_VISIBLE >= 200112 |
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138 #define _PC_ALLOC_SIZE_MIN 10 |
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139 #define _PC_FILESIZEBITS 12 |
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140 #define _PC_REC_INCR_XFER_SIZE 14 |
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141 #define _PC_REC_MAX_XFER_SIZE 15 |
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142 #define _PC_REC_MIN_XFER_SIZE 16 |
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143 #define _PC_REC_XFER_ALIGN 17 |
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144 #define _PC_SYMLINK_MAX 18 |
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145 #endif |
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146 |
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147 #if __BSD_VISIBLE |
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148 #define _PC_ACL_EXTENDED 59 |
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149 #define _PC_ACL_PATH_MAX 60 |
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150 #define _PC_CAP_PRESENT 61 |
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151 #define _PC_INF_PRESENT 62 |
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152 #define _PC_MAC_PRESENT 63 |
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153 #endif |
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154 */ |
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155 #if __BSD_VISIBLE |
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156 /* |
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157 * rfork() options. |
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158 * |
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159 * XXX currently, some operations without RFPROC set are not supported. |
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160 */ |
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161 #define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */ |
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162 #define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */ |
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163 #define RFFDG (1<<2) /* copy fd table */ |
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164 #define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */ |
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165 #define RFPROC (1<<4) /* change child (else changes curproc) */ |
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166 #define RFMEM (1<<5) /* share `address space' */ |
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167 #define RFNOWAIT (1<<6) /* give child to init */ |
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168 #define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */ |
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169 #define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */ |
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170 #define RFCFDG (1<<12) /* close all fds, zero fd table */ |
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171 #define RFTHREAD (1<<13) /* enable kernel thread support */ |
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172 #define RFSIGSHARE (1<<14) /* share signal handlers */ |
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173 #define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */ |
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174 #define RFSTOPPED (1<<17) /* leave child in a stopped state */ |
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175 #define RFHIGHPID (1<<18) /* use a pid higher then 10 (idleproc) */ |
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176 #define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */ |
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177 #define RFKERNELONLY (RFSTOPPED | RFHIGHPID | RFPPWAIT) |
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178 |
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179 #endif /* __BSD_VISIBLE */ |
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180 |
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181 #endif /* !_SYS_UNISTD_H_ */ |