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-rw-r--r--fs/signalfd.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/signalfd.c b/fs/signalfd.c
index 5441a4bca772..9c39bc7f8431 100644
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -211,6 +211,10 @@ asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask,
sigset_t sigmask;
struct signalfd_ctx *ctx;
+ /* Check the SFD_* constants for consistency. */
+ BUILD_BUG_ON(SFD_CLOEXEC != O_CLOEXEC);
+ BUILD_BUG_ON(SFD_NONBLOCK != O_NONBLOCK);
+
if (flags & ~(SFD_CLOEXEC | SFD_NONBLOCK))
return -EINVAL;