sleep fix

coreutils/sleep.c

@@ -3,6 +3,15 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+double convert(const char *num) {
+	if (atof(num) <= 0) {
+		fprintf(stderr, "sleep: %s < 1\n", num);
+		exit(1);
+	}
+
+	return atof(num);
+}
+
 int main(const int argc, const char **argv) {
 	if (argc == 1) {
 		printf("sleep [num[m - minute / h - hour / d - days].. ] / [inf (infinity)]\n");
@@ -13,26 +22,26 @@ int main(const int argc, const char **argv) {
 		for (;;)
 			sleep(1);
 
-	unsigned int sec = 0;
+	double sec = 0;
 	for (int i = 1; i < argc; i++) {
 		switch (argv[i][strlen(argv[i]) - 1]) {
 			case 'd':
-				sec += atoi(argv[i]) * 86400;
+				sec += convert(argv[i]) * 86400;
 				break;
 
 			case 'h':
-				sec += atoi(argv[i]) * 3600;
+				sec += convert(argv[i]) * 3600;
 				break;
 
 			case 'm':
-				sec += atoi(argv[i]) * 60;
+				sec += convert(argv[i]) * 60;
 				break;
 
 			default:
-				sec += atoi(argv[i]);
+				sec += convert(argv[i]);
 		}
 	}
 
-	sleep(sec);
+	usleep(sec * 1000000);
 	return 0;
 }