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Subject[PATCH v5 12/24] posix-timers: Factor out the guts of 'clock_gettime' for reusing
Date
In order to reuse the very same logic for the year 2038 safe syscalls
which we need to introduce for 32bit system, factor out the guts of
the 'clock_gettime' syscall.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
kernel/time/posix-timers.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index dcc632c..ca63626 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1124,17 +1124,23 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
return __clock_settime(which_clock, &new_tp);
}

-SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
- struct timespec __user *,tp)
+static int __clock_gettime(clockid_t which_clock, struct timespec *ts)
{
struct k_clock *kc = clockid_to_kclock(which_clock);
- struct timespec kernel_tp;
- int error;

if (!kc)
return -EINVAL;

- error = kc->clock_get(which_clock, &kernel_tp);
+ return kc->clock_get(which_clock, ts);
+}
+
+SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
+ struct timespec __user *,tp)
+{
+ struct timespec kernel_tp;
+ int error;
+
+ error = __clock_gettime(which_clock, &kernel_tp);

if (!error && copy_to_user(tp, &kernel_tp, sizeof (kernel_tp)))
error = -EFAULT;
--
1.7.9.5


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