diff options
| author |   Al Viro <viro@zeniv.linux.org.uk> | 2017-06-07 09:42:41 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2017-06-14 00:00:46 +0200 |
| commit | 2b2d02856b3176701c91d723356f766d6ee27853 (patch) | |
| tree | 31524e0ce6ee3c24b312ee46173d71fb5a19aa0b /kernel/time | |
| parent | time: Move compat_time()/stime() to native (diff) | |
| download | linux-dev-2b2d02856b3176701c91d723356f766d6ee27853.tar.xz linux-dev-2b2d02856b3176701c91d723356f766d6ee27853.zip | |
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.c | 41 |
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 */ |