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udhcp: socketpair can fail if AF_UNIX is not available (e.g. if module is not loaded).

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Error out on that.
This commit is contained in:
Denis Vlasenko 2007-05-24 12:19:56 +00:00
parent b055001b6a
commit 0fe67b16ce
1 changed files with 3 additions and 1 deletions
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4
networking/udhcp/signalpipe.c
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@ -36,7 +36,9 @@ static void signal_handler(int sig)
* and installs the signal handler */ * and installs the signal handler */
void udhcp_sp_setup(void) 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[0], F_SETFD, FD_CLOEXEC);
fcntl(signal_pipe[1], F_SETFD, FD_CLOEXEC); fcntl(signal_pipe[1], F_SETFD, FD_CLOEXEC);
signal(SIGUSR1, signal_handler); signal(SIGUSR1, signal_handler);