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-rw-r--r--networking/ntpd.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/networking/ntpd.c b/networking/ntpd.c
index fb3ef2e3c..6707e9bdb 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -1920,9 +1920,28 @@ static NOINLINE void ntp_init(char **argv)
if (opts & OPT_N)
setpriority(PRIO_PROCESS, 0, -15);
- bb_signals((1 << SIGTERM) | (1 << SIGINT), record_signo);
- /* Removed SIGHUP here: */
- bb_signals((1 << SIGPIPE) | (1 << SIGCHLD), SIG_IGN);
+ /* If network is up, syncronization occurs in ~10 seconds.
+ * We give "ntpd -q" a full minute to finish, then we exit.
+ *
+ * I tested ntpd 4.2.6p1 and apparently it never exits
+ * (will try forever), but it does not feel right.
+ * The goal of -q is to act like ntpdate: set time
+ * after a reasonably small period of polling, or fail.
+ */
+ if (opts & OPT_q)
+ alarm(60);
+
+ bb_signals(0
+ | (1 << SIGTERM)
+ | (1 << SIGINT)
+ | (1 << SIGALRM)
+ , record_signo
+ );
+ bb_signals(0
+ | (1 << SIGPIPE)
+ | (1 << SIGCHLD)
+ , SIG_IGN
+ );
}
int ntpd_main(int argc UNUSED_PARAM, char **argv) MAIN_EXTERNALLY_VISIBLE;