On Tuesday 21 April 2015 16:36:13 Baolin Wang wrote:
On 21 April 2015 at 04:48, Thomas Gleixner tglx@linutronix.de wrote:
On Mon, 20 Apr 2015, Baolin Wang wrote:
/* Set clock_realtime */ static int posix_clock_realtime_set(const clockid_t which_clock,
const struct timespec *tp)
const struct timespec64 *tp){
return do_sys_settimeofday(tp, NULL);
struct timespec ts = timespec64_to_timespec(*tp);return do_sys_settimeofday(&ts, NULL);Sigh. No. We first provide a proper function for this, which takes a timespec64, i.e. do_sys_settimeofday64() instead of having this wrapper mess all over the place.
Thanks for your comments,but if use do_sys_settimeofday64() here that will introduce a security bug: do_sys_settimeofday contains a capability check that normally prevents non-root users from setting the time.
With your change, any user can set the system time.
He was asking for a new do_sys_settimeofday64 function to be added, not using the low-level do_settimeofday64.
Arnd