1 files changed, 49 insertions, 0 deletions
diff --git a/libdaemon/dnonblock.c b/libdaemon/dnonblock.c
new file mode 100644
index 0000000..003514e
--- /dev/null
+++ b/libdaemon/dnonblock.c
@@ -0,0 +1,49 @@
+/***
+  This file is part of libdaemon.
+
+  Copyright 2003-2008 Lennart Poettering
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <fcntl.h>
+
+#include "dnonblock.h"
+
+int daemon_nonblock(int fd, int b) {
+    int a, c;
+
+    if ((a = fcntl(fd, F_GETFL)) < 0)
+        return -1;
+
+    if (b)
+        c = a | O_NONBLOCK;
+    else
+        c = a & ~O_NONBLOCK;
+
+    if (c == a)
+        return 0;
+
+    return fcntl(fd, F_SETFL, c);
+}