unistd.h
1 /* 2 * Copyright (c) 2000-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29 /* 30 * Copyright (c) 1989, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Berkeley and its contributors. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)unistd.h 8.2 (Berkeley) 1/7/94 62 */ 63 64 #ifndef _SYS_UNISTD_H_ 65 #define _SYS_UNISTD_H_ 66 67 #include <sys/cdefs.h> 68 69 /* 70 * Although we have saved user/group IDs, we do not use them in setuid 71 * as described in POSIX 1003.1, because the feature does not work for 72 * root. We use the saved IDs in seteuid/setegid, which are not currently 73 * part of the POSIX 1003.1 specification. 74 */ 75 #ifdef _NOT_AVAILABLE 76 #define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */ 77 #endif 78 79 #define _POSIX_VERSION 200112L 80 #define _POSIX2_VERSION 200112L 81 82 /* execution-time symbolic constants */ 83 /* may disable terminal special characters */ 84 #include <sys/_types/_posix_vdisable.h> 85 86 #define _POSIX_THREAD_KEYS_MAX 128 87 88 /* access function */ 89 #define F_OK 0 /* test for existence of file */ 90 #define X_OK (1<<0) /* test for execute or search permission */ 91 #define W_OK (1<<1) /* test for write permission */ 92 #define R_OK (1<<2) /* test for read permission */ 93 94 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 95 /* 96 * Extended access functions. 97 * Note that we depend on these matching the definitions in sys/kauth.h, 98 * but with the bits shifted left by 8. 99 */ 100 #define _READ_OK (1<<9) /* read file data / read directory */ 101 #define _WRITE_OK (1<<10) /* write file data / add file to directory */ 102 #define _EXECUTE_OK (1<<11) /* execute file / search in directory*/ 103 #define _DELETE_OK (1<<12) /* delete file / delete directory */ 104 #define _APPEND_OK (1<<13) /* append to file / add subdirectory to directory */ 105 #define _RMFILE_OK (1<<14) /* - / remove file from directory */ 106 #define _RATTR_OK (1<<15) /* read basic attributes */ 107 #define _WATTR_OK (1<<16) /* write basic attributes */ 108 #define _REXT_OK (1<<17) /* read extended attributes */ 109 #define _WEXT_OK (1<<18) /* write extended attributes */ 110 #define _RPERM_OK (1<<19) /* read permissions */ 111 #define _WPERM_OK (1<<20) /* write permissions */ 112 #define _CHOWN_OK (1<<21) /* change ownership */ 113 114 #define _ACCESS_EXTENDED_MASK (_READ_OK | _WRITE_OK | _EXECUTE_OK | \ 115 _DELETE_OK | _APPEND_OK | \ 116 _RMFILE_OK | _REXT_OK | \ 117 _WEXT_OK | _RATTR_OK | _WATTR_OK | _RPERM_OK | \ 118 _WPERM_OK | _CHOWN_OK) 119 #endif 120 121 /* whence values for lseek(2) */ 122 #include <sys/_types/_seek_set.h> 123 124 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 125 /* whence values for lseek(2); renamed by POSIX 1003.1 */ 126 #define L_SET SEEK_SET 127 #define L_INCR SEEK_CUR 128 #define L_XTND SEEK_END 129 #endif 130 131 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 132 struct accessx_descriptor { 133 unsigned int ad_name_offset; 134 int ad_flags; 135 int ad_pad[2]; 136 }; 137 #define ACCESSX_MAX_DESCRIPTORS 100 138 #define ACCESSX_MAX_TABLESIZE (16 * 1024) 139 #endif 140 141 /* configurable pathname variables */ 142 #define _PC_LINK_MAX 1 143 #define _PC_MAX_CANON 2 144 #define _PC_MAX_INPUT 3 145 #define _PC_NAME_MAX 4 146 #define _PC_PATH_MAX 5 147 #define _PC_PIPE_BUF 6 148 #define _PC_CHOWN_RESTRICTED 7 149 #define _PC_NO_TRUNC 8 150 #define _PC_VDISABLE 9 151 152 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 153 #define _PC_NAME_CHARS_MAX 10 154 #define _PC_CASE_SENSITIVE 11 155 #define _PC_CASE_PRESERVING 12 156 #define _PC_EXTENDED_SECURITY_NP 13 157 #define _PC_AUTH_OPAQUE_NP 14 158 #endif 159 160 #define _PC_2_SYMLINKS 15 /* Symlink supported in directory */ 161 #define _PC_ALLOC_SIZE_MIN 16 /* Minimum storage actually allocated */ 162 #define _PC_ASYNC_IO 17 /* Async I/O [AIO] supported? */ 163 #define _PC_FILESIZEBITS 18 /* # of bits to represent file size */ 164 #define _PC_PRIO_IO 19 /* Priority I/O [PIO] supported? */ 165 #define _PC_REC_INCR_XFER_SIZE 20 /* Recommended increment for next two */ 166 #define _PC_REC_MAX_XFER_SIZE 21 /* Recommended max file transfer size */ 167 #define _PC_REC_MIN_XFER_SIZE 22 /* Recommended min file transfer size */ 168 #define _PC_REC_XFER_ALIGN 23 /* Recommended buffer alignment */ 169 #define _PC_SYMLINK_MAX 24 /* Max # of bytes in symlink name */ 170 #define _PC_SYNC_IO 25 /* Sync I/O [SIO] supported? */ 171 #define _PC_XATTR_SIZE_BITS 26 /* # of bits to represent maximum xattr size */ 172 #define _PC_MIN_HOLE_SIZE 27 /* Recommended minimum hole size for sparse files */ 173 174 /* configurable system strings */ 175 #define _CS_PATH 1 176 177 #ifndef KERNEL 178 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 179 180 #include <machine/_types.h> 181 #include <sys/_types/_size_t.h> 182 #include <_types/_uint64_t.h> 183 #include <_types/_uint32_t.h> 184 #include <Availability.h> 185 186 __BEGIN_DECLS 187 188 int getattrlistbulk(int, void *, void *, size_t, uint64_t) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 189 int getattrlistat(int, const char *, void *, void *, size_t, unsigned long) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 190 int setattrlistat(int, const char *, void *, void *, size_t, uint32_t) __OSX_AVAILABLE(10.13) __IOS_AVAILABLE(11.0) __TVOS_AVAILABLE(11.0) __WATCHOS_AVAILABLE(4.0); 191 192 __END_DECLS 193 194 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 195 196 #if __DARWIN_C_LEVEL >= 200809L 197 198 #include <machine/_types.h> 199 #include <sys/_types/_size_t.h> 200 #include <sys/_types/_ssize_t.h> 201 #include <sys/_types.h> 202 #include <sys/_types/_uid_t.h> 203 #include <sys/_types/_gid_t.h> 204 #include <Availability.h> 205 206 __BEGIN_DECLS 207 208 int faccessat(int, const char *, int, int) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 209 int fchownat(int, const char *, uid_t, gid_t, int) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 210 int linkat(int, const char *, int, const char *, int) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 211 ssize_t readlinkat(int, const char *, char *, size_t) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 212 int symlinkat(const char *, int, const char *) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 213 int unlinkat(int, const char *, int) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 214 215 __END_DECLS 216 217 #endif /* __DARWIN_C_LEVEL >= 200809L */ 218 #endif /* !KERNEL */ 219 220 #endif /* !_SYS_UNISTD_H_ */