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authorAl Viro2017-06-07 09:42:41 +0100
committerThomas Gleixner2017-06-14 00:00:46 +0200
commit2b2d02856b3176701c91d723356f766d6ee27853 (patch)
tree31524e0ce6ee3c24b312ee46173d71fb5a19aa0b /kernel/time
parentb180db2c8ca6692a10b79631cadc18d03303d494 (diff)
time: Move compat_gettimeofday()/settimeofday() to native
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-16-viro@ZenIV.linux.org.uk
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/time.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/kernel/time/time.c b/kernel/time/time.c
index e5d44999ff78..7c89e437c4d7 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -257,6 +257,47 @@ SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv,
return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
+ struct timezone __user *, tz)
+{
+ if (tv) {
+ struct timeval ktv;
+
+ do_gettimeofday(&ktv);
+ if (compat_put_timeval(&ktv, tv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
+ struct timezone __user *, tz)
+{
+ struct timespec64 new_ts;
+ struct timeval user_tv;
+ struct timezone new_tz;
+
+ if (tv) {
+ if (compat_get_timeval(&user_tv, tv))
+ return -EFAULT;
+ new_ts.tv_sec = user_tv.tv_sec;
+ new_ts.tv_nsec = user_tv.tv_usec * NSEC_PER_USEC;
+ }
+ if (tz) {
+ if (copy_from_user(&new_tz, tz, sizeof(*tz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
+}
+#endif
+
SYSCALL_DEFINE1(adjtimex, struct timex __user *, txc_p)
{
struct timex txc; /* Local copy of parameter */