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Annotation of XNU/bsd/sys/unistd.h, revision 1.1

1.1     ! root        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: /* compile-time symbolic constants */
        !            62: #define        _POSIX_JOB_CONTROL      /* implementation supports job control */
        !            63: 
        !            64: /*
        !            65:  * Although we have saved user/group IDs, we do not use them in setuid
        !            66:  * as described in POSIX 1003.1, because the feature does not work for
        !            67:  * root.  We use the saved IDs in seteuid/setegid, which are not currently
        !            68:  * part of the POSIX 1003.1 specification.
        !            69:  */
        !            70: #ifdef _NOT_AVAILABLE
        !            71: #define        _POSIX_SAVED_IDS        /* saved set-user-ID and set-group-ID */
        !            72: #endif
        !            73: 
        !            74: #define        _POSIX_VERSION          198808L
        !            75: #define        _POSIX2_VERSION         199212L
        !            76: 
        !            77: /* execution-time symbolic constants */
        !            78:                                /* chown requires appropriate privileges */
        !            79: #define        _POSIX_CHOWN_RESTRICTED 1
        !            80:                                /* too-long path components generate errors */
        !            81: #define        _POSIX_NO_TRUNC         1
        !            82:                                /* may disable terminal special characters */
        !            83: #ifndef _POSIX_VDISABLE
        !            84: #define        _POSIX_VDISABLE         ((unsigned char)'\377')
        !            85: #endif
        !            86: 
        !            87: /* access function */
        !            88: #define        F_OK            0       /* test for existence of file */
        !            89: #define        X_OK            0x01    /* test for execute or search permission */
        !            90: #define        W_OK            0x02    /* test for write permission */
        !            91: #define        R_OK            0x04    /* test for read permission */
        !            92: 
        !            93: /* whence values for lseek(2) */
        !            94: #define        SEEK_SET        0       /* set file offset to offset */
        !            95: #define        SEEK_CUR        1       /* set file offset to current plus offset */
        !            96: #define        SEEK_END        2       /* set file offset to EOF plus offset */
        !            97: 
        !            98: #ifndef _POSIX_SOURCE
        !            99: /* whence values for lseek(2); renamed by POSIX 1003.1 */
        !           100: #define        L_SET           SEEK_SET
        !           101: #define        L_INCR          SEEK_CUR
        !           102: #define        L_XTND          SEEK_END
        !           103: #endif
        !           104: 
        !           105: /* configurable pathname variables */
        !           106: #define        _PC_LINK_MAX             1
        !           107: #define        _PC_MAX_CANON            2
        !           108: #define        _PC_MAX_INPUT            3
        !           109: #define        _PC_NAME_MAX             4
        !           110: #define        _PC_PATH_MAX             5
        !           111: #define        _PC_PIPE_BUF             6
        !           112: #define        _PC_CHOWN_RESTRICTED     7
        !           113: #define        _PC_NO_TRUNC             8
        !           114: #define        _PC_VDISABLE             9
        !           115: 
        !           116: /* configurable system variables */
        !           117: #define        _SC_ARG_MAX              1
        !           118: #define        _SC_CHILD_MAX            2
        !           119: #define        _SC_CLK_TCK              3
        !           120: #define        _SC_NGROUPS_MAX          4
        !           121: #define        _SC_OPEN_MAX             5
        !           122: #define        _SC_JOB_CONTROL          6
        !           123: #define        _SC_SAVED_IDS            7
        !           124: #define        _SC_VERSION              8
        !           125: #define        _SC_BC_BASE_MAX          9
        !           126: #define        _SC_BC_DIM_MAX          10
        !           127: #define        _SC_BC_SCALE_MAX        11
        !           128: #define        _SC_BC_STRING_MAX       12
        !           129: #define        _SC_COLL_WEIGHTS_MAX    13
        !           130: #define        _SC_EXPR_NEST_MAX       14
        !           131: #define        _SC_LINE_MAX            15
        !           132: #define        _SC_RE_DUP_MAX          16
        !           133: #define        _SC_2_VERSION           17
        !           134: #define        _SC_2_C_BIND            18
        !           135: #define        _SC_2_C_DEV             19
        !           136: #define        _SC_2_CHAR_TERM         20
        !           137: #define        _SC_2_FORT_DEV          21
        !           138: #define        _SC_2_FORT_RUN          22
        !           139: #define        _SC_2_LOCALEDEF         23
        !           140: #define        _SC_2_SW_DEV            24
        !           141: #define        _SC_2_UPE               25
        !           142: #define        _SC_STREAM_MAX          26
        !           143: #define        _SC_TZNAME_MAX          27
        !           144: 
        !           145: /* configurable system strings */
        !           146: #define        _CS_PATH                 1
        !           147: 
        !           148: #endif /* !_SYS_UNISTD_H_ */

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