1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */ 27 /* 28 ** sleep -- suspend execution for an interval 29 ** 30 ** sleep time 31 */ 32 33 #include <stdio.h> 34 #include <signal.h> 35 #include <locale.h> 36 #include <unistd.h> 37 #include <limits.h> 38 #include <stdlib.h> 39 40 static void catch_sig(int sig); 41 42 int 43 main(int argc, char **argv) 44 { 45 unsigned long n; 46 unsigned long leftover; 47 int c; 48 char *s; 49 50 n = 0; 51 (void) setlocale(LC_ALL, ""); 52 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 53 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 54 #endif 55 (void) textdomain(TEXT_DOMAIN); 56 while ((c = getopt(argc, argv, "")) != -1) 57 switch (c) { 58 case '?': 59 (void) fprintf(stderr, gettext("usage: sleep time\n")); 60 (void) exit(2); 61 } 62 argc -= optind-1; 63 argv += optind-1; 64 if (argc < 2) { 65 (void) fprintf(stderr, gettext("usage: sleep time\n")); 66 (void) exit(2); 67 } 68 69 /* 70 * XCU4: utility must terminate with zero exit status upon receiving 71 * SIGALRM signal 72 */ 73 74 signal(SIGALRM, catch_sig); 75 s = argv[1]; 76 while (c = *s++) { 77 if (c < '0' || c > '9') { 78 (void) fprintf(stderr, 79 gettext("sleep: bad character in argument\n")); 80 (void) exit(2); 81 } 82 n = n*10 + c - '0'; 83 } 84 85 /* 86 * to fix - sleep fails silently when on "long sleep" BUG: 1164064. 87 * logic is to repeatedly sleep for unslept remaining time after sleep 88 * of USHRT_MAX seconds, via reset and repeat call to sleep() 89 * library routine until there is none remaining time to sleep. 90 * 91 * The fix for 1164064 introduced bug 1263997 : This is a fix for 92 * these problems. 93 */ 94 95 leftover = 0; 96 while (n != 0) { 97 if (n >= USHRT_MAX) { 98 leftover = n - USHRT_MAX; 99 leftover += sleep(USHRT_MAX); 100 } 101 else { 102 leftover = sleep(n); 103 } 104 n = leftover; 105 } 106 return (0); 107 } 108 109 static void 110 catch_sig(int sig) 111 { 112 } 113