[B.A.T.M.A.N.] [PATCH 01/10] batctl: Print dummy value when localtime failed

localtime can return NULL when the local time could not be calculated. Accessing this NULL pointer is not allowed.

Fixes: 05f27bfcd302 ("add arp packets , change output") Signed-off-by: Sven Eckelmann sven.eckelmann@openmesh.com --- tcpdump.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tcpdump.c b/tcpdump.c index 4ede76b..5eb99cf 100644 --- a/tcpdump.c +++ b/tcpdump.c @@ -104,7 +104,11 @@ static int print_time(void) gettimeofday(&tv, NULL); tm = localtime(&tv.tv_sec);

- printf("%02d:%02d:%02d.%06ld ", tm->tm_hour, tm->tm_min, tm->tm_sec, tv.tv_usec); + if (tm) + printf("%02d:%02d:%02d.%06ld ", tm->tm_hour, tm->tm_min, tm->tm_sec, tv.tv_usec); + else + printf("00:00:00.000000 "); + return 1; }