File: /usr/include/sys/unistd.h

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       1: /*
       2:  * Copyright (c) 2000-2010 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: 
     173: /* configurable system strings */
     174: #define    _CS_PATH         1
     175: 
     176: #endif /* !_SYS_UNISTD_H_ */
     177: