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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-07 09:42:34 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-14 00:00:43 +0200 |
| commit | 3a4d44b6162555070194e486ff6b3799a8d323a2 (patch) | |
| tree | 095069878df5402d3616164b523fe7e65e894f6f /kernel/time/posix-timers.c | |
| parent | fb923c4a3c2ee735755d4a93522150fc35d0ecbd (diff) | |
| download | lwn-3a4d44b6162555070194e486ff6b3799a8d323a2.tar.gz lwn-3a4d44b6162555070194e486ff6b3799a8d323a2.zip | |
ntp: Move adjtimex related compat syscalls to native counterparts
Get rid of set_fs() mess and sanitize compat_{get,put}_timex(),
while we are at it.
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/20170607084241.28657-9-viro@ZenIV.linux.org.uk
Diffstat (limited to 'kernel/time/posix-timers.c')
| -rw-r--r-- | kernel/time/posix-timers.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index ea4a463436bf..b1b6d52d6425 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1018,6 +1018,33 @@ SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock, return err; } +#ifdef CONFIG_COMPAT + +COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, + struct compat_timex __user *, utp) +{ + const struct k_clock *kc = clockid_to_kclock(which_clock); + struct timex ktx; + int err; + + if (!kc) + return -EINVAL; + if (!kc->clock_adj) + return -EOPNOTSUPP; + + err = compat_get_timex(&ktx, utp); + if (err) + return err; + + err = kc->clock_adj(which_clock, &ktx); + + if (err >= 0) + err = compat_put_timex(utp, &ktx); + + return err; +} +#endif + SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, struct timespec __user *, tp) { |