X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=fs%2Ftimerfd.c;h=9ae4abb4110b84ef286facc88e66be9d954a021d;hb=a55da8a0ddac4ebe0d7b3a1e5902cb1d286f8062;hp=053818dd6c18be8f228e1c40483e50d78aa78007;hpb=3b3b3bd97788e1f574c71f865d8465b00a6b8708;p=cascardo%2Flinux.git

diff --git a/fs/timerfd.c b/fs/timerfd.c
index 053818dd6c18..9ae4abb4110b 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -390,6 +390,11 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
 	     clockid != CLOCK_BOOTTIME_ALARM))
 		return -EINVAL;
 
+	if (!capable(CAP_WAKE_ALARM) &&
+	    (clockid == CLOCK_REALTIME_ALARM ||
+	     clockid == CLOCK_BOOTTIME_ALARM))
+		return -EPERM;
+
 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return -ENOMEM;
@@ -433,6 +438,11 @@ static int do_timerfd_settime(int ufd, int flags,
 		return ret;
 	ctx = f.file->private_data;
 
+	if (!capable(CAP_WAKE_ALARM) && isalarm(ctx)) {
+		fdput(f);
+		return -EPERM;
+	}
+
 	timerfd_setup_cancel(ctx, flags);
 
 	/*