diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-07 09:42:38 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-14 00:00:44 +0200 |
| commit | d822cdcce43f9d4dcddbf9c68f9537d542ccc3c3 (patch) | |
| tree | ff2193bf59468d50b3cc5f6300db6ed4b8f90d93 /kernel/time/posix-stubs.c | |
| parent | 54ad9c46c262ce4a603dc7887e37956896a0211d (diff) | |
| download | linux-d822cdcce43f9d4dcddbf9c68f9537d542ccc3c3.tar.gz | |
posix-timers: Move compat versions of clock_gettime/settime/getres
Move them to the native implementations and get rid of the set_fs() hackery.
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/20170607084241.28657-13-viro@ZenIV.linux.org.uk
Diffstat (limited to 'kernel/time/posix-stubs.c')
| -rw-r--r-- | kernel/time/posix-stubs.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index 7f88517461e828..a375c31cb3523f 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -137,6 +137,59 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags, } #ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, + struct compat_timespec __user *, tp) +{ + struct timespec64 new_tp64; + struct timespec new_tp; + + if (which_clock != CLOCK_REALTIME) + return -EINVAL; + if (compat_get_timespec(&new_tp, tp)) + return -EFAULT; + + new_tp64 = timespec_to_timespec64(new_tp); + return do_sys_settimeofday64(&new_tp64, NULL); +} + +COMPAT_SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock, + struct compat_timespec __user *,tp) +{ + struct timespec64 kernel_tp64; + struct timespec kernel_tp; + + switch (which_clock) { + case CLOCK_REALTIME: ktime_get_real_ts64(&kernel_tp64); break; + case CLOCK_MONOTONIC: ktime_get_ts64(&kernel_tp64); break; + case CLOCK_BOOTTIME: get_monotonic_boottime64(&kernel_tp64); break; + default: return -EINVAL; + } + + kernel_tp = timespec64_to_timespec(kernel_tp64); + if (compat_put_timespec(&kernel_tp, tp)) + return -EFAULT; + return 0; +} + +COMPAT_SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, + struct compat_timespec __user *, tp) +{ + struct timespec rtn_tp = { + .tv_sec = 0, + .tv_nsec = hrtimer_resolution, + }; + + switch (which_clock) { + case CLOCK_REALTIME: + case CLOCK_MONOTONIC: + case CLOCK_BOOTTIME: + if (compat_put_timespec(&rtn_tp, tp)) + return -EFAULT; + return 0; + default: + return -EINVAL; + } +} COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, struct compat_timespec __user *, rqtp, struct compat_timespec __user *, rmtp) |