dhcpcd: fork to background on initial timeout

Unless the -1, --oneshot option is given. dhcpcd should keep on trying to configure the interface. Fixes #423

Author: rsmarples

src/dhcpcd.8.in

@@ -522,18 +522,19 @@ option instead.
 Timeout after
 .Ar seconds ,
 instead of the default 30.
+On timeout,
+.Nm
+will exit if the
+.Fl 1 ,
+.Fl Fl oneshot
+option has been given,
+otherwise it will fork into the background and keep on
+trying.
 A setting of 0
 .Ar seconds
 causes
 .Nm
 to wait forever to get a lease.
-If
-.Nm
-is working on a single interface then
-.Nm
-will exit when a timeout occurs, otherwise
-.Nm
-will fork into the background.
 .It Fl u , Fl Fl userclass Ar class
 Tags the DHCPv4 message with the userclass
 .Ar class .

src/dhcpcd.c

@@ -198,7 +198,7 @@ handle_exit_timeout(void *arg)
 
 ctx = arg;
 logerrx("timed out");
-if (!(ctx->options & DHCPCD_MANAGER)) {
+if (ctx->options & DHCPCD_ONESHOT) {
 struct interface *ifp;
 
 TAILQ_FOREACH(ifp, ctx->ifaces, next) {