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authorEric Andersen2003-09-12 05:50:51 +0000
committerEric Andersen2003-09-12 05:50:51 +0000
commite15138a87024c627d1a0e64b5d25dda1bc634c6a (patch)
treea005050f04b4a814d31fa745afd518b864fea744 /util-linux
parentf57a614db9db951df798d51351d1c64603ded186 (diff)
downloadbusybox-e15138a87024c627d1a0e64b5d25dda1bc634c6a.zip
busybox-e15138a87024c627d1a0e64b5d25dda1bc634c6a.tar.gz
Teach rdate to timeout in 10 seconds to avoid blocking forever
with odd or broken networking setups
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/rdate.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/util-linux/rdate.c b/util-linux/rdate.c
index a5699eb..cb18024 100644
--- a/util-linux/rdate.c
+++ b/util-linux/rdate.c
@@ -32,11 +32,17 @@
#include <time.h>
#include <stdlib.h>
#include <unistd.h>
+#include <signal.h>
#include "busybox.h"
static const int RFC_868_BIAS = 2208988800UL;
+static void socket_timeout()
+{
+ bb_error_msg_and_die("timeout connecting to time server\n");
+}
+
static time_t askremotedate(const char *host)
{
unsigned long int nett, localt;
@@ -46,6 +52,10 @@ static time_t askremotedate(const char *host)
if (getservbyname("time", "tcp") != NULL)
port="time";
+ /* Add a timeout for dead or non accessable servers */
+ alarm(10);
+ signal(SIGALRM, socket_timeout);
+
fd = xconnect(host, port);
if (safe_read(fd, (void *)&nett, 4) != 4) /* read time from server */