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 */ 32 33 #ifndef _SYS_UNISTD_H_ 34 #define _SYS_UNISTD_H_ 35 36 #include <sys/cdefs.h> 37 #include <sys/types.h> 38 39 /* 40 * POSIX options and option groups we unconditionally do or don't 41 * implement. Those options which are implemented (or not) entirely 42 * in user mode are defined in <unistd.h>. Please keep this list in 43 * alphabetical order. 44 * 45 * Anything which is defined as zero below **must** have an 46 * implementation for the corresponding sysconf() which is able to 47 * determine conclusively whether or not the feature is supported. 48 * Anything which is defined as other than -1 below **must** have 49 * complete headers, types, and function declarations as specified by 50 * the POSIX standard; however, if the relevant sysconf() function 51 * returns -1, the functions may be stubbed out. 52 */ 53 #define _POSIX_ADVISORY_INFO -1 54 #define _POSIX_ASYNCHRONOUS_IO 0 55 #define _POSIX_BARRIERS 200112L 56 #define _POSIX_CHOWN_RESTRICTED 1 57 #define _POSIX_CLOCK_SELECTION -1 58 #define _POSIX_CPUTIME -1 59 #define _POSIX_FSYNC 200112L 60 #define _POSIX_IPV6 0 61 #define _POSIX_JOB_CONTROL 1 62 #define _POSIX_MAPPED_FILES 200112L 63 #define _POSIX_MEMLOCK -1 64 #define _POSIX_MEMLOCK_RANGE 200112L 65 #define _POSIX_MEMORY_PROTECTION 200112L 66 #define _POSIX_MESSAGE_PASSING 200112L 67 #define _POSIX_MONOTONIC_CLOCK 200112L 68 #define _POSIX_NO_TRUNC 1 69 #define _POSIX_PRIORITIZED_IO -1 70 #define _POSIX_PRIORITY_SCHEDULING 200112L 71 #define _POSIX_RAW_SOCKETS 200112L 72 #define _POSIX_REALTIME_SIGNALS 200112L 73 #define _POSIX_SEMAPHORES 200112L 74 #define _POSIX_SHARED_MEMORY_OBJECTS 200112L 75 #define _POSIX_SPIN_LOCKS 200112L 76 #define _POSIX_SPORADIC_SERVER -1 77 #define _POSIX_SYNCHRONIZED_IO -1 78 #define _POSIX_TIMEOUTS 200112L 79 #define _POSIX_TIMERS 200112L 80 #define _POSIX_TYPED_MEMORY_OBJECTS -1 81 #define _POSIX_VDISABLE 0xff 82 83 #if __XSI_VISIBLE 84 #define _XOPEN_SHM 1 85 #define _XOPEN_STREAMS -1 86 #endif 87 88 /* 89 * Although we have saved user/group IDs, we do not use them in setuid 90 * as described in POSIX 1003.1, because the feature does not work for 91 * root. We use the saved IDs in seteuid/setegid, which are not currently 92 * part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001 93 * as this is now mandatory. 94 */ 95 #ifdef _NOT_AVAILABLE 96 #define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */ 97 #endif 98 99 /* Define the POSIX.1 version we target for compliance. */ 100 #ifndef _POSIX_VERSION 101 #define _POSIX_VERSION 200112L 102 #endif 103 104 /* access function */ 105 #define F_OK 0 /* test for existence of file */ 106 #define X_OK 0x01 /* test for execute or search permission */ 107 #define W_OK 0x02 /* test for write permission */ 108 #define R_OK 0x04 /* test for read permission */ 109 110 /* whence values for lseek(2) */ 111 #ifndef SEEK_SET 112 #define SEEK_SET 0 /* set file offset to offset */ 113 #define SEEK_CUR 1 /* set file offset to current plus offset */ 114 #define SEEK_END 2 /* set file offset to EOF plus offset */ 115 #endif 116 #if __BSD_VISIBLE 117 #define SEEK_DATA 3 /* set file offset to next data past offset */ 118 #define SEEK_HOLE 4 /* set file offset to next hole past offset */ 119 120 /* whence values for lseek(2); renamed by POSIX 1003.1 */ 121 #define L_SET SEEK_SET 122 #define L_INCR SEEK_CUR 123 #define L_XTND SEEK_END 124 #endif 125 126 /* configurable pathname variables */ 127 #define _PC_LINK_MAX 1 128 #define _PC_MAX_CANON 2 129 #define _PC_MAX_INPUT 3 130 #define _PC_NAME_MAX 4 131 #define _PC_PATH_MAX 5 132 #define _PC_PIPE_BUF 6 133 #define _PC_CHOWN_RESTRICTED 7 134 #define _PC_NO_TRUNC 8 135 #define _PC_VDISABLE 9 136 137 #if __POSIX_VISIBLE >= 199309 138 #define _PC_ASYNC_IO 53 139 #define _PC_PRIO_IO 54 140 #define _PC_SYNC_IO 55 141 #endif 142 143 #if __POSIX_VISIBLE >= 200112 144 #define _PC_ALLOC_SIZE_MIN 10 145 #define _PC_FILESIZEBITS 12 146 #define _PC_REC_INCR_XFER_SIZE 14 147 #define _PC_REC_MAX_XFER_SIZE 15 148 #define _PC_REC_MIN_XFER_SIZE 16 149 #define _PC_REC_XFER_ALIGN 17 150 #define _PC_SYMLINK_MAX 18 151 #endif 152 153 #if __BSD_VISIBLE 154 #define _PC_ACL_EXTENDED 59 155 #define _PC_ACL_PATH_MAX 60 156 #define _PC_CAP_PRESENT 61 157 #define _PC_INF_PRESENT 62 158 #define _PC_MAC_PRESENT 63 159 #endif 160 161 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */ 162 #define _PC_MIN_HOLE_SIZE 21 163 164 #if __BSD_VISIBLE 165 /* 166 * rfork() options. 167 * 168 * XXX currently, operations without RFPROC set are not supported. 169 */ 170 #define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */ 171 #define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */ 172 #define RFFDG (1<<2) /* copy fd table */ 173 #define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */ 174 #define RFPROC (1<<4) /* change child (else changes curproc) */ 175 #define RFMEM (1<<5) /* share `address space' */ 176 #define RFNOWAIT (1<<6) /* parent need not wait() on child */ 177 #define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */ 178 #define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */ 179 #define RFCFDG (1<<12) /* zero fd table */ 180 #define RFTHREAD (1<<13) /* enable kernel thread support */ 181 #define RFSIGSHARE (1<<14) /* share signal handlers */ 182 #define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */ 183 #define RFPGLOCK (1<<30) /* process group interlock for signal race */ 184 #define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */ 185 #define RFKERNELONLY (RFPGLOCK | RFPPWAIT) 186 187 /* 188 * Extended exit extexit() operation modes. 189 */ 190 /* Types of action to communicate exit */ 191 #define EXTEXIT_SIMPLE 0 192 #define EXTEXIT_SETINT 1 193 #define EXTEXIT_ACTION(f) ((f) & 0xffff) 194 /* Types describing what to exit */ 195 #define EXTEXIT_PROC (0<<16) 196 #define EXTEXIT_LWP (1<<16) 197 #define EXTEXIT_WHO(f) ((f) & (0xffff<<16)) 198 199 200 /* 201 * Parameters for the creation of a new lwp. 202 */ 203 struct lwp_params { 204 void (*lwp_func)(void *); /* Function to start execution */ 205 void *lwp_arg; /* Parameter to this function */ 206 void *lwp_stack; /* Stack address to use */ 207 lwpid_t *lwp_tid1; /* Address to copy out new tid */ 208 lwpid_t *lwp_tid2; /* Same */ 209 }; 210 211 #endif /* __BSD_VISIBLE */ 212 213 #endif /* !_SYS_UNISTD_H_ */ 214