# HG changeset patch
# User jbe
# Date 1496576952 -7200
# Node ID 37aaca00941cd944ee4615def4bc41835eab2cc1
# Parent  30a04a6a45db7deeea7f4ba71f34e9450d812f89
Backup and restore errno in signal handler

diff -r 30a04a6a45db -r 37aaca00941c moonbridge.c
--- a/moonbridge.c	Sun Jun 04 13:43:09 2017 +0200
+++ b/moonbridge.c	Sun Jun 04 13:49:12 2017 +0200
@@ -295,6 +295,7 @@
 
 /* Signal handler for master and child processes */
 static void moonbr_signal(int sig) {
+  int errno2 = errno;  /* backup errno variable */
   if (getpid() == moonbr_masterpid) {
     /* master process */
     switch (sig) {
@@ -326,6 +327,7 @@
       kill(moonbr_masterpid, sig);
     }
   }
+  errno = errno2;  /* restore errno from backup */
 }
 
 /* Initialize signal handling */