From: Deepa Dinamani <deepa.kernel@gmail.com>
To: tglx@linutronix.de, linux-kernel@vger.kernel.org
Cc: john.stultz@linaro.org, arnd@arndb.de, y2038@lists.linaro.org
Subject: [PATCH v2 3/7] Change k_clock clock_get() to use timespec64
Date: Sun, 26 Mar 2017 12:04:14 -0700 [thread overview]
Message-ID: <1490555058-4603-4-git-send-email-deepa.kernel@gmail.com> (raw)
In-Reply-To: <1490555058-4603-1-git-send-email-deepa.kernel@gmail.com>
struct timespec is not y2038 safe on 32 bit machines.
Replace uses of struct timespec with struct timespec64
in the kernel.
The syscall interfaces themselves will be changed
in a separate series.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
---
drivers/char/mmtimer.c | 4 ++--
include/linux/posix-timers.h | 2 +-
include/linux/timekeeping.h | 5 +++++
kernel/time/alarmtimer.c | 4 ++--
kernel/time/posix-clock.c | 9 +++------
kernel/time/posix-cpu-timers.c | 10 +++++-----
kernel/time/posix-stubs.c | 9 ++++++---
kernel/time/posix-timers.c | 32 +++++++++++++++++---------------
8 files changed, 41 insertions(+), 34 deletions(-)
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
index b708c85..40d880b 100644
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -478,13 +478,13 @@ static int sgi_clock_period;
static struct timespec sgi_clock_offset;
static int sgi_clock_period;
-static int sgi_clock_get(clockid_t clockid, struct timespec *tp)
+static int sgi_clock_get(clockid_t clockid, struct timespec64 *tp)
{
u64 nsec;
nsec = rtc_time() * sgi_clock_period
+ sgi_clock_offset.tv_nsec;
- *tp = ns_to_timespec(nsec);
+ *tp = ns_to_timespec64(nsec);
tp->tv_sec += sgi_clock_offset.tv_sec;
return 0;
};
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 64aa189..0688f39 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -90,7 +90,7 @@ struct k_clock {
int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
int (*clock_set) (const clockid_t which_clock,
const struct timespec *tp);
- int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
+ int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp);
int (*clock_adj) (const clockid_t which_clock, struct timex *tx);
int (*timer_create) (struct k_itimer *timer);
int (*nsleep) (const clockid_t which_clock, int flags,
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 3617a78..ddc229f 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -258,6 +258,11 @@ static inline void timekeeping_clocktai(struct timespec *ts)
*ts = ktime_to_timespec(ktime_get_clocktai());
}
+static inline void timekeeping_clocktai64(struct timespec64 *ts)
+{
+ *ts = ktime_to_timespec64(ktime_get_clocktai());
+}
+
/*
* RTC specific
*/
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index ce3a31e..944ca6e 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -558,14 +558,14 @@ static int alarm_clock_getres(const clockid_t which_clock, struct timespec *tp)
*
* Provides the underlying alarm base time.
*/
-static int alarm_clock_get(clockid_t which_clock, struct timespec *tp)
+static int alarm_clock_get(clockid_t which_clock, struct timespec64 *tp)
{
struct alarm_base *base = &alarm_bases[clock2alarm(which_clock)];
if (!alarmtimer_get_rtcdev())
return -EINVAL;
- *tp = ktime_to_timespec(base->gettime());
+ *tp = ktime_to_timespec64(base->gettime());
return 0;
}
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index e24008c..fab6bd3 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -297,20 +297,17 @@ static int pc_clock_adjtime(clockid_t id, struct timex *tx)
return err;
}
-static int pc_clock_gettime(clockid_t id, struct timespec *ts)
+static int pc_clock_gettime(clockid_t id, struct timespec64 *ts)
{
struct posix_clock_desc cd;
- struct timespec64 ts64;
int err;
err = get_clock_desc(id, &cd);
if (err)
return err;
- if (cd.clk->ops.clock_gettime) {
- err = cd.clk->ops.clock_gettime(cd.clk, &ts64);
- *ts = timespec64_to_timespec(ts64);
- }
+ if (cd.clk->ops.clock_gettime)
+ err = cd.clk->ops.clock_gettime(cd.clk, ts);
else
err = -EOPNOTSUPP;
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 76bea3a..082231c 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -261,7 +261,7 @@ static int cpu_clock_sample_group(const clockid_t which_clock,
static int posix_cpu_clock_get_task(struct task_struct *tsk,
const clockid_t which_clock,
- struct timespec *tp)
+ struct timespec64 *tp)
{
int err = -EINVAL;
u64 rtn;
@@ -275,13 +275,13 @@ static int posix_cpu_clock_get_task(struct task_struct *tsk,
}
if (!err)
- *tp = ns_to_timespec(rtn);
+ *tp = ns_to_timespec64(rtn);
return err;
}
-static int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp)
+static int posix_cpu_clock_get(const clockid_t which_clock, struct timespec64 *tp)
{
const pid_t pid = CPUCLOCK_PID(which_clock);
int err = -EINVAL;
@@ -1374,7 +1374,7 @@ static int process_cpu_clock_getres(const clockid_t which_clock,
return posix_cpu_clock_getres(PROCESS_CLOCK, tp);
}
static int process_cpu_clock_get(const clockid_t which_clock,
- struct timespec *tp)
+ struct timespec64 *tp)
{
return posix_cpu_clock_get(PROCESS_CLOCK, tp);
}
@@ -1399,7 +1399,7 @@ static int thread_cpu_clock_getres(const clockid_t which_clock,
return posix_cpu_clock_getres(THREAD_CLOCK, tp);
}
static int thread_cpu_clock_get(const clockid_t which_clock,
- struct timespec *tp)
+ struct timespec64 *tp)
{
return posix_cpu_clock_get(THREAD_CLOCK, tp);
}
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index 95a1b1f..0fbd0c5 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -64,14 +64,17 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
struct timespec __user *,tp)
{
+ struct timespec64 kernel_tp64;
struct timespec kernel_tp;
switch (which_clock) {
- case CLOCK_REALTIME: ktime_get_real_ts(&kernel_tp); break;
- case CLOCK_MONOTONIC: ktime_get_ts(&kernel_tp); break;
- case CLOCK_BOOTTIME: get_monotonic_boottime(&kernel_tp); break;
+ 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 (copy_to_user(tp, &kernel_tp, sizeof (kernel_tp)))
return -EFAULT;
return 0;
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index f215ef7..6817064 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -204,9 +204,9 @@ static inline void unlock_timer(struct k_itimer *timr, unsigned long flags)
}
/* Get clock_realtime */
-static int posix_clock_realtime_get(clockid_t which_clock, struct timespec *tp)
+static int posix_clock_realtime_get(clockid_t which_clock, struct timespec64 *tp)
{
- ktime_get_real_ts(tp);
+ ktime_get_real_ts64(tp);
return 0;
}
@@ -229,32 +229,32 @@ static int posix_clock_realtime_adj(const clockid_t which_clock,
/*
* Get monotonic time for posix timers
*/
-static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
+static int posix_ktime_get_ts(clockid_t which_clock, struct timespec64 *tp)
{
- ktime_get_ts(tp);
+ ktime_get_ts64(tp);
return 0;
}
/*
* Get monotonic-raw time for posix timers
*/
-static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp)
+static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec64 *tp)
{
- getrawmonotonic(tp);
+ getrawmonotonic64(tp);
return 0;
}
-static int posix_get_realtime_coarse(clockid_t which_clock, struct timespec *tp)
+static int posix_get_realtime_coarse(clockid_t which_clock, struct timespec64 *tp)
{
- *tp = current_kernel_time();
+ *tp = current_kernel_time64();
return 0;
}
static int posix_get_monotonic_coarse(clockid_t which_clock,
- struct timespec *tp)
+ struct timespec64 *tp)
{
- *tp = get_monotonic_coarse();
+ *tp = get_monotonic_coarse64();
return 0;
}
@@ -264,15 +264,15 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp
return 0;
}
-static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp)
+static int posix_get_boottime(const clockid_t which_clock, struct timespec64 *tp)
{
- get_monotonic_boottime(tp);
+ get_monotonic_boottime64(tp);
return 0;
}
-static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
+static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp)
{
- timekeeping_clocktai(tp);
+ timekeeping_clocktai64(tp);
return 0;
}
@@ -1032,13 +1032,15 @@ SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
struct timespec __user *,tp)
{
struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timespec64 kernel_tp64;
struct timespec kernel_tp;
int error;
if (!kc)
return -EINVAL;
- error = kc->clock_get(which_clock, &kernel_tp);
+ error = kc->clock_get(which_clock, &kernel_tp64);
+ kernel_tp = timespec64_to_timespec(kernel_tp64);
if (!error && copy_to_user(tp, &kernel_tp, sizeof (kernel_tp)))
error = -EFAULT;
--
2.7.4
next prev parent reply other threads:[~2017-03-26 19:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-26 19:04 [PATCH v2 0/7] Change k_clock interfaces " Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 1/7] time: Delete do_sys_setimeofday() Deepa Dinamani
2017-04-14 19:54 ` [tip:timers/core] " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 2/7] time: Change posix clocks ops interfaces to use timespec64 Deepa Dinamani
2017-04-14 19:55 ` [tip:timers/core] " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` Deepa Dinamani [this message]
2017-04-14 19:56 ` [tip:timers/core] time: Change k_clock clock_get() " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 4/7] Change k_clock clock_getres() " Deepa Dinamani
2017-04-14 19:56 ` [tip:timers/core] time: " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 5/7] Change k_clock clock_set() " Deepa Dinamani
2017-04-14 19:57 ` [tip:timers/core] time: " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 6/7] Change k_clock timer_set() and timer_get() " Deepa Dinamani
2017-04-14 19:57 ` [tip:timers/core] time: " tip-bot for Deepa Dinamani
2017-03-26 19:04 ` [PATCH v2 7/7] Change k_clock nsleep() " Deepa Dinamani
2017-04-14 19:58 ` [tip:timers/core] time: " tip-bot for Deepa Dinamani
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