From a337c6fcee2ab43bf791968f265a0a937715a3ff Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 13 Apr 2010 02:36:19 +0200
Subject: [PATCH 1/1] main: when ignoring a signal set SA_RESTART

---
 main.c |  4 ++--
 util.c | 11 ++++++++++-
 util.h |  2 ++
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/main.c b/main.c
index 0eb64d265..3e2bfe10c 100644
--- a/main.c
+++ b/main.c
@@ -445,8 +445,8 @@ int main(int argc, char *argv[]) {
         assert_se(reset_all_signal_handlers() == 0);
 
         /* If we are init, we can block sigkill. Yay. */
-        signal(SIGKILL, SIG_IGN);
-        signal(SIGPIPE, SIG_IGN);
+        ignore_signal(SIGKILL);
+        ignore_signal(SIGPIPE);
 
         /* Close all open files */
         assert_se(close_all_fds(NULL, 0) == 0);
diff --git a/util.c b/util.c
index e32e2f256..a1b9f1e0f 100644
--- a/util.c
+++ b/util.c
@@ -658,7 +658,6 @@ char *strstrip(char *s) {
                 *s = 0;
 
         return s;
-
 }
 
 char *delete_chars(char *s, const char *bad) {
@@ -1637,6 +1636,16 @@ int release_terminal(void) {
         return r;
 }
 
+int ignore_signal(int sig) {
+        struct sigaction sa;
+
+        zero(sa);
+        sa.sa_handler = SIG_IGN;
+        sa.sa_flags = SA_RESTART;
+
+        return sigaction(sig, &sa, NULL);
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",
diff --git a/util.h b/util.h
index 6d1af6eef..6728eb143 100644
--- a/util.h
+++ b/util.h
@@ -211,6 +211,8 @@ int release_terminal(void);
 
 int flush_fd(int fd);
 
+int ignore_signal(int sig);
+
 extern char * __progname;
 
 const char *ioprio_class_to_string(int i);
-- 
2.30.2