Improved checking, documentation of modes (RHBZ#582901, RHBZ#582929).

[libguestfs.git] / daemon / umask.c

diff --git a/daemon/umask.c b/daemon/umask.c
index a9ddeab..db4a2f2 100644 (file)
--- a/daemon/umask.c
+++ b/daemon/umask.c
@@ -35,6 +35,11 @@ do_umask (int mask)
 {
   int r;
 
+  if (mask < 0 || mask > 0777) {
+    reply_with_error ("0%o: mask negative or out of range", mask);
+    return -1;
+  }
+
   r = umask (mask);
 
   if (r == -1) {