1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)unistd.h 8.2 (Berkeley) 1/7/94 30 * $FreeBSD: src/sys/sys/unistd.h,v 1.50 2009/01/31 10:04:36 trhodes Exp $ 31 * $DragonFly: src/sys/sys/unistd.h,v 1.10 2008/09/22 09:13:21 hasso Exp $ 32 */ 33 34 #ifndef _SYS_UNISTD_H_ 35 #define _SYS_UNISTD_H_ 36 37 #include <sys/cdefs.h> 38 #include <sys/types.h> 39 40 /* 41 * POSIX options and option groups we unconditionally do or don't 42 * implement. Those options which are implemented (or not) entirely 43 * in user mode are defined in <unistd.h>. Please keep this list in 44 * alphabetical order. 45 * 46 * Anything which is defined as zero below **must** have an 47 * implementation for the corresponding sysconf() which is able to 48 * determine conclusively whether or not the feature is supported. 49 * Anything which is defined as other than -1 below **must** have 50 * complete headers, types, and function declarations as specified by 51 * the POSIX standard; however, if the relevant sysconf() function 52 * returns -1, the functions may be stubbed out. 53 */ 54 #define _POSIX_ADVISORY_INFO -1 55 #define _POSIX_ASYNCHRONOUS_IO 0 56 #define _POSIX_BARRIERS 200112L 57 #define _POSIX_CHOWN_RESTRICTED 1 58 #define _POSIX_CLOCK_SELECTION -1 59 #define _POSIX_CPUTIME -1 60 #define _POSIX_FSYNC 200112L 61 #define _POSIX_IPV6 0 62 #define _POSIX_JOB_CONTROL 1 63 #define _POSIX_MAPPED_FILES 200112L 64 #define _POSIX_MEMLOCK -1 65 #define _POSIX_MEMLOCK_RANGE 200112L 66 #define _POSIX_MEMORY_PROTECTION 200112L 67 #define _POSIX_MESSAGE_PASSING 200112L 68 #define _POSIX_MONOTONIC_CLOCK 200112L 69 #define _POSIX_NO_TRUNC 1 70 #define _POSIX_PRIORITIZED_IO -1 71 #define _POSIX_PRIORITY_SCHEDULING 200112L 72 #define _POSIX_RAW_SOCKETS 200112L 73 #define _POSIX_REALTIME_SIGNALS 200112L 74 #define _POSIX_SEMAPHORES 200112L 75 #define _POSIX_SHARED_MEMORY_OBJECTS 200112L 76 #define _POSIX_SPIN_LOCKS 200112L 77 #define _POSIX_SPORADIC_SERVER -1 78 #define _POSIX_SYNCHRONIZED_IO -1 79 #define _POSIX_TIMEOUTS 200112L 80 #define _POSIX_TIMERS 200112L 81 #define _POSIX_TYPED_MEMORY_OBJECTS -1 82 #define _POSIX_VDISABLE 0xff 83 84 #if __XSI_VISIBLE 85 #define _XOPEN_SHM 1 86 #define _XOPEN_STREAMS -1 87 #endif 88 89 /* 90 * Although we have saved user/group IDs, we do not use them in setuid 91 * as described in POSIX 1003.1, because the feature does not work for 92 * root. We use the saved IDs in seteuid/setegid, which are not currently 93 * part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001 94 * as this is now mandatory. 95 */ 96 #ifdef _NOT_AVAILABLE 97 #define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */ 98 #endif 99 100 /* Define the POSIX.1 version we target for compliance. */ 101 #ifndef _POSIX_VERSION 102 #define _POSIX_VERSION 200112L 103 #endif 104 105 /* access function */ 106 #define F_OK 0 /* test for existence of file */ 107 #define X_OK 0x01 /* test for execute or search permission */ 108 #define W_OK 0x02 /* test for write permission */ 109 #define R_OK 0x04 /* test for read permission */ 110 111 /* whence values for lseek(2) */ 112 #ifndef SEEK_SET 113 #define SEEK_SET 0 /* set file offset to offset */ 114 #define SEEK_CUR 1 /* set file offset to current plus offset */ 115 #define SEEK_END 2 /* set file offset to EOF plus offset */ 116 #endif 117 #if __BSD_VISIBLE 118 #define SEEK_DATA 3 /* set file offset to next data past offset */ 119 #define SEEK_HOLE 4 /* set file offset to next hole past offset */ 120 #endif 121 122 #ifndef _POSIX_SOURCE 123 /* whence values for lseek(2); renamed by POSIX 1003.1 */ 124 #define L_SET SEEK_SET 125 #define L_INCR SEEK_CUR 126 #define L_XTND SEEK_END 127 #endif 128 129 /* configurable pathname variables */ 130 #define _PC_LINK_MAX 1 131 #define _PC_MAX_CANON 2 132 #define _PC_MAX_INPUT 3 133 #define _PC_NAME_MAX 4 134 #define _PC_PATH_MAX 5 135 #define _PC_PIPE_BUF 6 136 #define _PC_CHOWN_RESTRICTED 7 137 #define _PC_NO_TRUNC 8 138 #define _PC_VDISABLE 9 139 140 #if __POSIX_VISIBLE >= 199309 141 #define _PC_ASYNC_IO 53 142 #define _PC_PRIO_IO 54 143 #define _PC_SYNC_IO 55 144 #endif 145 146 #if __POSIX_VISIBLE >= 200112 147 #define _PC_ALLOC_SIZE_MIN 10 148 #define _PC_FILESIZEBITS 12 149 #define _PC_REC_INCR_XFER_SIZE 14 150 #define _PC_REC_MAX_XFER_SIZE 15 151 #define _PC_REC_MIN_XFER_SIZE 16 152 #define _PC_REC_XFER_ALIGN 17 153 #define _PC_SYMLINK_MAX 18 154 #endif 155 156 #if __BSD_VISIBLE 157 #define _PC_ACL_EXTENDED 59 158 #define _PC_ACL_PATH_MAX 60 159 #define _PC_CAP_PRESENT 61 160 #define _PC_INF_PRESENT 62 161 #define _PC_MAC_PRESENT 63 162 #endif 163 164 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */ 165 #define _PC_MIN_HOLE_SIZE 21 166 167 #if __BSD_VISIBLE 168 /* 169 * rfork() options. 170 * 171 * XXX currently, operations without RFPROC set are not supported. 172 */ 173 #define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */ 174 #define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */ 175 #define RFFDG (1<<2) /* copy fd table */ 176 #define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */ 177 #define RFPROC (1<<4) /* change child (else changes curproc) */ 178 #define RFMEM (1<<5) /* share `address space' */ 179 #define RFNOWAIT (1<<6) /* parent need not wait() on child */ 180 #define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */ 181 #define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */ 182 #define RFCFDG (1<<12) /* zero fd table */ 183 #define RFTHREAD (1<<13) /* enable kernel thread support */ 184 #define RFSIGSHARE (1<<14) /* share signal handlers */ 185 #define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */ 186 #define RFPGLOCK (1<<30) /* process group interlock for signal race */ 187 #define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */ 188 #define RFKERNELONLY (RFPGLOCK | RFPPWAIT) 189 190 /* 191 * Extended exit extexit() operation modes. 192 */ 193 /* Types of action to communicate exit */ 194 #define EXTEXIT_SIMPLE 0 195 #define EXTEXIT_SETINT 1 196 #define EXTEXIT_ACTION(f) ((f) & 0xffff) 197 /* Types describing what to exit */ 198 #define EXTEXIT_PROC (0<<16) 199 #define EXTEXIT_LWP (1<<16) 200 #define EXTEXIT_WHO(f) ((f) & (0xffff<<16)) 201 202 203 /* 204 * Parameters for the creation of a new lwp. 205 */ 206 struct lwp_params { 207 void (*func)(void *); /* Function to start execution */ 208 void *arg; /* Parameter to this function */ 209 void *stack; /* Stack address to use */ 210 lwpid_t *tid1; /* Address to copy out new tid */ 211 lwpid_t *tid2; /* Same */ 212 }; 213 214 #endif /* __BSD_VISIBLE */ 215 216 #endif /* !_SYS_UNISTD_H_ */ 217