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Annotation of prex-old/usr/bin/sleep/sleep.c, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 1988, 1993, 1994
                      3:  *     The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <stdio.h>
                     31: #include <stdlib.h>
                     32: #include <unistd.h>
                     33:
                     34: #ifdef CMDBOX
                     35: #define main(argc, argv)       sleep_main(argc, argv)
                     36: #endif
                     37:
                     38: static void usage(void);
                     39:
                     40: int
                     41: main(int argc, char *argv[])
                     42: {
                     43:        int ch, secs;
                     44:
                     45:        while ((ch = getopt(argc, argv, "")) != -1)
                     46:                switch(ch) {
                     47:                case '?':
                     48:                default:
                     49:                        usage();
                     50:                }
                     51:        argc -= optind;
                     52:        argv += optind;
                     53:
                     54:        if (argc != 1)
                     55:                usage();
                     56:
                     57:        if ((secs = atoi(*argv)) > 0)
                     58:                (void)sleep(secs);
                     59:        exit(0);
                     60: }
                     61:
                     62: static void
                     63: usage(void)
                     64: {
                     65:
                     66:        fprintf(stderr, "usage: sleep seconds\n");
                     67:        exit(1);
                     68: }