2 * Copyright (c) 1988, 1993, 1994
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30 #include <capsicum_helpers.h>
39 static void usage(void) __dead2;
41 static volatile sig_atomic_t report_requested;
43 report_request(int signo __unused)
50 main(int argc, char *argv[])
52 struct timespec time_to_sleep;
59 if (caph_limit_stdio() < 0 || caph_enter() < 0)
66 for (i = 1; i < argc; i++) {
67 matches = sscanf(argv[i], "%lf%c%1s", &d, &unit, buf);
89 if (seconds > INT_MAX)
93 original = time_to_sleep.tv_sec = (time_t)seconds;
94 time_to_sleep.tv_nsec = 1e9 * (seconds - time_to_sleep.tv_sec);
96 signal(SIGINFO, report_request);
99 * Note: [EINTR] is supposed to happen only when a signal was handled
100 * but the kernel also returns it when a ptrace-based debugger
101 * attaches. This is a bug but it is hard to fix.
103 while (nanosleep(&time_to_sleep, &time_to_sleep) != 0) {
104 if (report_requested) {
105 /* Reporting does not bother with nanoseconds. */
106 warnx("about %d second(s) left out of the original %d",
107 (int)time_to_sleep.tv_sec, (int)original);
108 report_requested = 0;
109 } else if (errno != EINTR)
119 fprintf(stderr, "usage: sleep number[unit] ...\n");
120 fprintf(stderr, "Unit can be 's' (seconds, the default), "
121 "m (minutes), h (hours), or d (days).\n");