diff -r 76c96ee18221 -r af7e2d80dee6 src/server/util/system.c
--- a/src/server/util/system.c	Sat Feb 04 10:06:25 2017 +0100
+++ b/src/server/util/system.c	Tue Feb 14 12:56:23 2017 +0100
@@ -328,6 +328,17 @@
     return dir;
 }
 
+int system_close(int fd) {
+    while(close(fd)) {
+        if(errno != EINTR) {
+            return -1;
+        } else {
+            log_ereport(LOG_VERBOSE, "close interrupted by signal"); // TODO: use debug log level
+        }
+    }
+    return 0;
+}
+
 NSAPI_PUBLIC int 
 getThreadMallocKey(void)
 {