bsd/sys/unistd.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)unistd.h    8.2 (Berkeley) 1/7/94
  56  */
  57
  58 #ifndef _SYS_UNISTD_H_
  59 #define _SYS_UNISTD_H_
  60
  61 /*
  62  * Although we have saved user/group IDs, we do not use them in setuid
  63  * as described in POSIX 1003.1, because the feature does not work for
  64  * root.  We use the saved IDs in seteuid/setegid, which are not currently
  65  * part of the POSIX 1003.1 specification.
  66  */
  67 #ifdef  _NOT_AVAILABLE
  68 #define _POSIX_SAVED_IDS        /* saved set-user-ID and set-group-ID */
  69 #endif
  70
  71 #define _POSIX_VERSION          200112L
  72 #define _POSIX2_VERSION         200112L
  73
  74 /* execution-time symbolic constants */
  75                                 /* may disable terminal special characters */
  76 #ifndef _POSIX_VDISABLE
  77 #define _POSIX_VDISABLE         ((unsigned char)'\377')
  78 #endif
  79
  80 #define _POSIX_THREAD_KEYS_MAX 128
  81
  82 /* access function */
  83 #define F_OK            0       /* test for existence of file */
  84 #define X_OK            (1<<0)  /* test for execute or search permission */
  85 #define W_OK            (1<<1)  /* test for write permission */
  86 #define R_OK            (1<<2)  /* test for read permission */
  87
  88 #ifndef _POSIX_C_SOURCE
  89 /*
  90  * Extended access functions.
  91  * Note that we depend on these matching the definitions in sys/kauth.h,
  92  * but with the bits shifted left by 8.
  93  */
  94 #define _READ_OK        (1<<9)  /* read file data / read directory */
  95 #define _WRITE_OK       (1<<10) /* write file data / add file to directory */
  96 #define _EXECUTE_OK     (1<<11) /* execute file / search in directory*/
  97 #define _DELETE_OK      (1<<12) /* delete file / delete directory */
  98 #define _APPEND_OK      (1<<13) /* append to file / add subdirectory to directory */
  99 #define _RMFILE_OK      (1<<14) /* - / remove file from directory */
 100 #define _RATTR_OK       (1<<15) /* read basic attributes */
 101 #define _WATTR_OK       (1<<16) /* write basic attributes */
 102 #define _REXT_OK        (1<<17) /* read extended attributes */
 103 #define _WEXT_OK        (1<<18) /* write extended attributes */
 104 #define _RPERM_OK       (1<<19) /* read permissions */
 105 #define _WPERM_OK       (1<<20) /* write permissions */
 106 #define _CHOWN_OK       (1<<21) /* change ownership */
 107
 108 #define _ACCESS_EXTENDED_MASK (_READ_OK | _WRITE_OK | _EXECUTE_OK | \
 109                                 _DELETE_OK | _APPEND_OK | \
 110                                 _RMFILE_OK | _REXT_OK | \
 111                                 _WEXT_OK | _RATTR_OK | _WATTR_OK | _RPERM_OK | \
 112                                 _WPERM_OK | _CHOWN_OK)
 113 #endif
 114
 115 /* whence values for lseek(2) */
 116 #ifndef SEEK_SET
 117 #define SEEK_SET        0       /* set file offset to offset */
 118 #define SEEK_CUR        1       /* set file offset to current plus offset */
 119 #define SEEK_END        2       /* set file offset to EOF plus offset */
 120 #endif  /* !SEEK_SET */
 121
 122 #ifndef _POSIX_C_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 #ifndef _POSIX_C_SOURCE
 130 struct accessx_descriptor {
 131         unsigned ad_name_offset;
 132         int ad_flags;
 133         int ad_pad[2];
 134 };
 135 #define ACCESSX_MAX_DESCRIPTORS 100
 136 #define ACCESSX_MAX_TABLESIZE   (16 * 1024)
 137 #endif
 138
 139 /* configurable pathname variables */
 140 #define _PC_LINK_MAX             1
 141 #define _PC_MAX_CANON            2
 142 #define _PC_MAX_INPUT            3
 143 #define _PC_NAME_MAX             4
 144 #define _PC_PATH_MAX             5
 145 #define _PC_PIPE_BUF             6
 146 #define _PC_CHOWN_RESTRICTED     7
 147 #define _PC_NO_TRUNC             8
 148 #define _PC_VDISABLE             9
 149
 150 #ifndef _POSIX_C_SOURCE
 151 #define _PC_NAME_CHARS_MAX       10
 152 #define _PC_CASE_SENSITIVE               11
 153 #define _PC_CASE_PRESERVING              12
 154 #define _PC_EXTENDED_SECURITY_NP        13
 155 #define _PC_AUTH_OPAQUE_NP      14
 156 #endif
 157
 158 /* configurable system strings */
 159 #define _CS_PATH                 1
 160
 161 #endif /* !_SYS_UNISTD_H_ */