flag parameters: check magic constants

[mv-sheeva.git] / fs / eventfd.c

diff --git a/fs/eventfd.c b/fs/eventfd.c
index 3ed4466177a74929b2fac1cde0b38af8ef0e9f06..08bf558d04080ffe0a3ced77a5660d4af4e1182f 100644 (file)
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -203,6 +203,10 @@ 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;