1 files changed, 73 insertions, 0 deletions
diff --git a/avahi-core/fdutil.c b/avahi-core/fdutil.c
new file mode 100644
index 0000000..de7b0cf
--- /dev/null
+++ b/avahi-core/fdutil.c
@@ -0,0 +1,73 @@
+/* $Id$ */
+
+/***
+  This file is part of avahi.
+ 
+  avahi is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+ 
+  avahi is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+  Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public
+  License along with avahi; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#include "fdutil.h"
+
+int avahi_set_cloexec(int fd) {
+    int n;
+
+    assert(fd >= 0);
+    
+    if ((n = fcntl(fd, F_GETFD)) < 0)
+        return -1;
+
+    if (n & FD_CLOEXEC)
+        return 0;
+
+    return fcntl(fd, F_SETFD, n|FD_CLOEXEC);
+}
+
+int avahi_set_nonblock(int fd) {
+    int n;
+    
+    assert(fd >= 0);
+
+    if ((n = fcntl(fd, F_GETFL)) < 0)
+        return -1;
+
+    if (n & O_NONBLOCK)
+        return 0;
+
+    return fcntl(fd, F_SETFL, n|O_NONBLOCK);
+}
+
+int avahi_wait_for_write(int fd) {
+    fd_set fds;
+    int r;
+    
+    FD_ZERO(&fds);
+    FD_SET(fd, &fds);
+    
+    if ((r = select(fd+1, NULL, &fds, NULL, NULL)) < 0)
+        return -1;
+    
+    assert(r > 0);
+
+    return 0;
+}