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Annotation of Net2/sys/unistd.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1989 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
                     33:  *     @(#)unistd.h    5.14 (Berkeley) 4/1/91
                     34:  */
                     35: 
                     36: #ifndef _SYS_UNISTD_H_
                     37: #define        _SYS_UNISTD_H_
                     38: 
                     39: /* compile-time symbolic constants */
                     40: #define        _POSIX_JOB_CONTROL      /* implementation supports job control */
                     41: #ifdef _NOTYET
                     42: #define        _POSIX_SAVED_IDS        /* saved set-user-ID and set-group-ID */
                     43: #endif
                     44: #define        _POSIX_VERSION          198808L
                     45: 
                     46: /* execution-time symbolic constants */
                     47: #define        _POSIX_CHOWN_RESTRICTED /* chown requires appropriate privileges */
                     48: #define        _POSIX_NO_TRUNC         /* too-long path components generate errors */
                     49:                                /* may disable terminal special characters */
                     50: #define        _POSIX_VDISABLE ((unsigned char)'\377')
                     51: 
                     52: /* access function */
                     53: #define        F_OK            0       /* test for existence of file */
                     54: #define        X_OK            0x01    /* test for execute or search permission */
                     55: #define        W_OK            0x02    /* test for write permission */
                     56: #define        R_OK            0x04    /* test for read permission */
                     57: 
                     58: /* whence values for lseek(2) */
                     59: #define        SEEK_SET        0       /* set file offset to offset */
                     60: #define        SEEK_CUR        1       /* set file offset to current plus offset */
                     61: #define        SEEK_END        2       /* set file offset to EOF plus offset */
                     62: 
                     63: #ifndef _POSIX_SOURCE
                     64: /* whence values for lseek(2); renamed by POSIX 1003.1 */
                     65: #define        L_SET           SEEK_SET
                     66: #define        L_INCR          SEEK_CUR
                     67: #define        L_XTND          SEEK_END
                     68: #endif
                     69: 
                     70: /* configurable pathname variables */
                     71: #define        _PC_LINK_MAX            1
                     72: #define        _PC_MAX_CANON           2
                     73: #define        _PC_MAX_INPUT           3
                     74: #define        _PC_NAME_MAX            4
                     75: #define        _PC_PATH_MAX            5
                     76: #define        _PC_PIPE_BUF            6
                     77: #define        _PC_CHOWN_RESTRICTED    7
                     78: #define        _PC_NO_TRUNC            8
                     79: #define        _PC_VDISABLE            9
                     80: 
                     81: /* configurable system variables */
                     82: #define        _SC_ARG_MAX             1
                     83: #define        _SC_CHILD_MAX           2
                     84: #define        _SC_CLK_TCK             3
                     85: #define        _SC_NGROUPS_MAX         4
                     86: #define        _SC_OPEN_MAX            5
                     87: #define        _SC_JOB_CONTROL         6
                     88: #define        _SC_SAVED_IDS           7
                     89: #define        _SC_VERSION             8
                     90: 
                     91: #endif /* !_SYS_UNISTD_H_ */

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