bsd/sys/unistd.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, 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 #ifndef _POSIX_VDISABLE
  85 #define _POSIX_VDISABLE         ((unsigned char)'\377')
  86 #endif
  87
  88 #define _POSIX_THREAD_KEYS_MAX 128
  89
  90 /* access function */
  91 #define F_OK            0       /* test for existence of file */
  92 #define X_OK            (1<<0)  /* test for execute or search permission */
  93 #define W_OK            (1<<1)  /* test for write permission */
  94 #define R_OK            (1<<2)  /* test for read permission */
  95
  96 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
  97 /*
  98  * Extended access functions.
  99  * Note that we depend on these matching the definitions in sys/kauth.h,
 100  * but with the bits shifted left by 8.
 101  */
 102 #define _READ_OK        (1<<9)  /* read file data / read directory */
 103 #define _WRITE_OK       (1<<10) /* write file data / add file to directory */
 104 #define _EXECUTE_OK     (1<<11) /* execute file / search in directory*/
 105 #define _DELETE_OK      (1<<12) /* delete file / delete directory */
 106 #define _APPEND_OK      (1<<13) /* append to file / add subdirectory to directory */
 107 #define _RMFILE_OK      (1<<14) /* - / remove file from directory */
 108 #define _RATTR_OK       (1<<15) /* read basic attributes */
 109 #define _WATTR_OK       (1<<16) /* write basic attributes */
 110 #define _REXT_OK        (1<<17) /* read extended attributes */
 111 #define _WEXT_OK        (1<<18) /* write extended attributes */
 112 #define _RPERM_OK       (1<<19) /* read permissions */
 113 #define _WPERM_OK       (1<<20) /* write permissions */
 114 #define _CHOWN_OK       (1<<21) /* change ownership */
 115
 116 #define _ACCESS_EXTENDED_MASK (_READ_OK | _WRITE_OK | _EXECUTE_OK | \
 117                                 _DELETE_OK | _APPEND_OK | \
 118                                 _RMFILE_OK | _REXT_OK | \
 119                                 _WEXT_OK | _RATTR_OK | _WATTR_OK | _RPERM_OK | \
 120                                 _WPERM_OK | _CHOWN_OK)
 121 #endif
 122
 123 /* whence values for lseek(2) */
 124 #ifndef SEEK_SET
 125 #define SEEK_SET        0       /* set file offset to offset */
 126 #define SEEK_CUR        1       /* set file offset to current plus offset */
 127 #define SEEK_END        2       /* set file offset to EOF plus offset */
 128 #endif  /* !SEEK_SET */
 129
 130 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 131 /* whence values for lseek(2); renamed by POSIX 1003.1 */
 132 #define L_SET           SEEK_SET
 133 #define L_INCR          SEEK_CUR
 134 #define L_XTND          SEEK_END
 135 #endif
 136
 137 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 138 struct accessx_descriptor {
 139         unsigned int ad_name_offset;
 140         int ad_flags;
 141         int ad_pad[2];
 142 };
 143 #define ACCESSX_MAX_DESCRIPTORS 100
 144 #define ACCESSX_MAX_TABLESIZE   (16 * 1024)
 145 #endif
 146
 147 /* configurable pathname variables */
 148 #define _PC_LINK_MAX             1
 149 #define _PC_MAX_CANON            2
 150 #define _PC_MAX_INPUT            3
 151 #define _PC_NAME_MAX             4
 152 #define _PC_PATH_MAX             5
 153 #define _PC_PIPE_BUF             6
 154 #define _PC_CHOWN_RESTRICTED     7
 155 #define _PC_NO_TRUNC             8
 156 #define _PC_VDISABLE             9
 157
 158 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 159 #define _PC_NAME_CHARS_MAX       10
 160 #define _PC_CASE_SENSITIVE               11
 161 #define _PC_CASE_PRESERVING              12
 162 #define _PC_EXTENDED_SECURITY_NP        13
 163 #define _PC_AUTH_OPAQUE_NP      14
 164 #endif
 165
 166 #define _PC_2_SYMLINKS          15      /* Symlink supported in directory */
 167 #define _PC_ALLOC_SIZE_MIN      16      /* Minimum storage actually allocated */
 168 #define _PC_ASYNC_IO            17      /* Async I/O [AIO] supported? */
 169 #define _PC_FILESIZEBITS        18      /* # of bits to represent file size */
 170 #define _PC_PRIO_IO             19      /* Priority I/O [PIO] supported? */
 171 #define _PC_REC_INCR_XFER_SIZE  20      /* Recommended increment for next two */
 172 #define _PC_REC_MAX_XFER_SIZE   21      /* Recommended max file transfer size */
 173 #define _PC_REC_MIN_XFER_SIZE   22      /* Recommended min file transfer size */
 174 #define _PC_REC_XFER_ALIGN      23      /* Recommended buffer alignment */
 175 #define _PC_SYMLINK_MAX         24      /* Max # of bytes in symlink name */
 176 #define _PC_SYNC_IO             25      /* Sync I/O [SIO] supported? */
 177
 178 /* configurable system strings */
 179 #define _CS_PATH                 1
 180
 181 #endif /* !_SYS_UNISTD_H_ */