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| author | Denys Vlasenko | 2010-08-27 02:15:01 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2010-08-27 02:15:01 +0200 |
| commit | 74c992af5c6b8cfe6214e705bc04f8c2f9d8a304 (patch) | |
| tree | 0a47255194456a017a4c1b34257851e75514fa51 | |
| parent | 1cd0d8600524de01d643db32bc05f4d4d0c30436 (diff) | |
| download | busybox-74c992af5c6b8cfe6214e705bc04f8c2f9d8a304.zip busybox-74c992af5c6b8cfe6214e705bc04f8c2f9d8a304.tar.gz | |
ntpd: with -q, exit after 60 seconds even if time is not synced.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/ntpd.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/networking/ntpd.c b/networking/ntpd.c index fb3ef2e..6707e9b 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; |