diff options
Diffstat (limited to 'fs/timerfd.c')
| -rw-r--r-- | fs/timerfd.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/timerfd.c b/fs/timerfd.c index 0274ae2f53e6..147b72349d3b 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -405,6 +405,11 @@ 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; @@ -454,6 +459,11 @@ 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); /* |