From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 6 Dec 2015 01:44:38 +0000 (+0000)
Subject: Save errno in signal handler
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=innduct.git;a=commitdiff_plain;h=32e76c7d514d05d5ac6ad9833035b9826fbc1c8f

Save errno in signal handler
---

diff --git a/statemc.c b/statemc.c
index 04f0a1d..cb5139d 100644
--- a/statemc.c
+++ b/statemc.c
@@ -536,6 +536,7 @@ static void *sigarrived_event(oop_source *lp, int fd, oop_event e, void *u) {
 }
 
 static void sigarrived_handler(int signum) {
+  int esave = errno;
   static char x;
   switch (signum) {
   case SIGTERM:
@@ -546,6 +547,7 @@ static void sigarrived_handler(int signum) {
     abort();
   }
   write(signal_self_pipe[1],&x,1);
+  errno = esave;
 }
 
 void init_signals(void) {