1 files changed, 17 insertions, 0 deletions

diff --git a/nacl/curvecp/open_write.c b/nacl/curvecp/open_write.c
new file mode 100644
index 00000000..e23752d1
--- /dev/null
+++ b/nacl/curvecp/open_write.c
@@ -0,0 +1,17 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "open.h"
+
+int open_write(const char *fn)
+{
+#ifdef O_CLOEXEC
+  return open(fn,O_CREAT | O_WRONLY | O_NONBLOCK | O_CLOEXEC,0644);
+#else
+  int fd = open(fn,O_CREAT | O_WRONLY | O_NONBLOCK,0644);
+  if (fd == -1) return -1;
+  fcntl(fd,F_SETFD,1);
+  return fd;
+#endif
+}