From 0fe67b16ce7ba3d5aa0f405bf3c2541210bb5320 Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Thu, 24 May 2007 12:19:56 +0000
Subject: udhcp: socketpair can fail if AF_UNIX is not available (e.g. if
module is not loaded). Error out on that.
---
networking/udhcp/signalpipe.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/networking/udhcp/signalpipe.c b/networking/udhcp/signalpipe.c
index 361596580..d52a931a9 100644
--- a/networking/udhcp/signalpipe.c
+++ b/networking/udhcp/signalpipe.c
@@ -36,7 +36,9 @@ static void signal_handler(int sig)
* and installs the signal handler */
void udhcp_sp_setup(void)
{
- socketpair(AF_UNIX, SOCK_STREAM, 0, signal_pipe);
+// BTW, why socketpair and not just pipe?
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, signal_pipe))
+ bb_perror_msg_and_die("socketpair");
fcntl(signal_pipe[0], F_SETFD, FD_CLOEXEC);
fcntl(signal_pipe[1], F_SETFD, FD_CLOEXEC);
signal(SIGUSR1, signal_handler);
--
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