1 files changed, 15 insertions, 2 deletions

diff --git a/fs/eventfd.c b/fs/eventfd.c
index 343942deeec1..08bf558d0408 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -198,11 +198,18 @@ struct file *eventfd_fget(int fd)
         return file;
 }
 
-asmlinkage long sys_eventfd(unsigned int count)
+asmlinkage long sys_eventfd2(unsigned int count, int flags)
 {
         int fd;
         struct eventfd_ctx *ctx;
 
+        /* Check the EFD_* constants for consistency.  */
+        BUILD_BUG_ON(EFD_CLOEXEC != O_CLOEXEC);
+        BUILD_BUG_ON(EFD_NONBLOCK != O_NONBLOCK);
+
+        if (flags & ~(EFD_CLOEXEC | EFD_NONBLOCK))
+                return -EINVAL;
+
         ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
         if (!ctx)
                 return -ENOMEM;
@@ -214,9 +221,15 @@ asmlinkage long sys_eventfd(unsigned int count)
          * When we call this, the initialization must be complete, since
          * anon_inode_getfd() will install the fd.
          */
-        fd = anon_inode_getfd("[eventfd]", &eventfd_fops, ctx);
+        fd = anon_inode_getfd("[eventfd]", &eventfd_fops, ctx,
+                              flags & (O_CLOEXEC | O_NONBLOCK));
         if (fd < 0)
                 kfree(ctx);
         return fd;
 }
 
+asmlinkage long sys_eventfd(unsigned int count)
+{
+        return sys_eventfd2(count, 0);
+}
+