lib/util: added set_close_on_exec()

[kai/samba.git] / lib / util / blocking.c

diff --git a/lib/util/blocking.c b/lib/util/blocking.c
index f5933cc92b71f0071d2a1213eade489970e798ff..9dede7aa0dd63779f630c2e211f625ceb95f0cf2 100644 (file)
--- a/lib/util/blocking.c
+++ b/lib/util/blocking.c
@@ -60,3 +60,21 @@ _PUBLIC_ int set_blocking(int fd, bool set)
        return fcntl( fd, F_SETFL, val);
 #undef FLAG_TO_SET
 }
+
+
+_PUBLIC_ bool set_close_on_exec(int fd)
+{
+#ifdef FD_CLOEXEC
+       int val;
+
+       val = fcntl(fd, F_GETFD, 0);
+       if (val >= 0) {
+               val |= FD_CLOEXEC;
+               val = fcntl(fd, F_SETFD, val);
+               if (val != -1) {
+                       return true;
+               }
+       }
+#endif
+       return false;
+}