From 827ad8337e88ec9e0bf73a8af1d6cf8555e8ef3d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 27 Jan 2015 08:19:31 +0100 Subject: [PATCH] uloop: ignore SIGPIPE by default MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Most app don't want to crash because of unhandled SIGPIPE. It could happen is such trivial situations like writing to socket. Signed-off-by: Rafał Miłecki --- uloop.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/uloop.c b/uloop.c index d4df6e2..9ebeca6 100644 --- a/uloop.c +++ b/uloop.c @@ -582,6 +582,28 @@ static void uloop_install_handler(int signum, void (*handler)(int), struct sigac sigaction(signum, act, NULL); } +static void uloop_ignore_signal(int signum, bool ignore) +{ + struct sigaction s; + void *new_handler = NULL; + + sigaction(signum, NULL, &s); + + if (ignore) { + if (s.sa_handler == SIG_DFL) /* Ignore only if there isn't any custom handler */ + new_handler = SIG_IGN; + } else { + if (s.sa_handler == SIG_IGN) /* Restore only if noone modified our SIG_IGN */ + new_handler = SIG_DFL; + } + + if (new_handler) { + s.sa_handler = new_handler; + s.sa_flags = 0; + sigaction(signum, &s, NULL); + } +} + static void uloop_setup_signals(bool add) { static struct sigaction old_sigint, old_sigchld, old_sigterm; @@ -589,6 +611,8 @@ static void uloop_setup_signals(bool add) uloop_install_handler(SIGINT, uloop_handle_sigint, &old_sigint, add); uloop_install_handler(SIGTERM, uloop_handle_sigint, &old_sigterm, add); uloop_install_handler(SIGCHLD, uloop_sigchld, &old_sigchld, add); + + uloop_ignore_signal(SIGPIPE, add); } static int uloop_get_next_timeout(struct timeval *tv)