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Subject[PATCH v2 1/7] time: Delete do_sys_setimeofday()
Date
struct timespec is not y2038 safe on 32 bit machines
and needs to be replaced with struct timespec64.

do_sys_timeofday() is just a wrapper function.
Replace all calls to this function with direct
calls to do_sys_timeofday64() instead and delete
do_sys_timeofday().

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: linux-alpha@vger.kernel.org
---
arch/alpha/kernel/osf_sys.c | 4 +++-
include/linux/timekeeping.h | 15 ---------------
kernel/compat.c | 4 ++--
kernel/time/posix-stubs.c | 5 ++++-
kernel/time/posix-timers.c | 5 ++++-
kernel/time/time.c | 4 ++--
6 files changed, 15 insertions(+), 22 deletions(-)

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 0b96109..9de47a9 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1016,6 +1016,7 @@ SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
struct timezone __user *, tz)
{
+ struct timespec64 kts64;
struct timespec kts;
struct timezone ktz;

@@ -1023,13 +1024,14 @@ SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
if (get_tv32((struct timeval *)&kts, tv))
return -EFAULT;
kts.tv_nsec *= 1000;
+ kts64 = timespec_to_timespec64(kts);
}
if (tz) {
if (copy_from_user(&ktz, tz, sizeof(*tz)))
return -EFAULT;
}

- return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+ return do_sys_settimeofday64(tv ? &kts64 : NULL, tz ? &ktz : NULL);
}

asmlinkage long sys_ni_posix_timers(void);
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index b598cbc..3617a78 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -19,21 +19,6 @@ extern void do_gettimeofday(struct timeval *tv);
extern int do_settimeofday64(const struct timespec64 *ts);
extern int do_sys_settimeofday64(const struct timespec64 *tv,
const struct timezone *tz);
-static inline int do_sys_settimeofday(const struct timespec *tv,
- const struct timezone *tz)
-{
- struct timespec64 ts64;
-
- if (!tv)
- return do_sys_settimeofday64(NULL, tz);
-
- if (!timespec_valid(tv))
- return -EINVAL;
-
- ts64 = timespec_to_timespec64(*tv);
- return do_sys_settimeofday64(&ts64, tz);
-}
-
/*
* Kernel time accessors
*/
diff --git a/kernel/compat.c b/kernel/compat.c
index 19aec5d..e29a01a 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -109,7 +109,7 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
struct timezone __user *, tz)
{
struct timeval user_tv;
- struct timespec new_ts;
+ struct timespec64 new_ts;
struct timezone new_tz;

if (tv) {
@@ -123,7 +123,7 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
return -EFAULT;
}

- return do_sys_settimeofday(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
+ return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
}

static int __compat_get_timeval(struct timeval *tv, const struct compat_timeval __user *ctv)
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index cd6716e..95a1b1f 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -49,13 +49,16 @@ SYS_NI(alarm);
SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
const struct timespec __user *, tp)
{
+ struct timespec64 new_tp64;
struct timespec new_tp;

if (which_clock != CLOCK_REALTIME)
return -EINVAL;
if (copy_from_user(&new_tp, tp, sizeof (*tp)))
return -EFAULT;
- return do_sys_settimeofday(&new_tp, NULL);
+
+ new_tp64 = timespec_to_timespec64(new_tp);
+ return do_sys_settimeofday64(&new_tp64, NULL);
}

SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 50a6a47..f215ef7 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -214,7 +214,10 @@ static int posix_clock_realtime_get(clockid_t which_clock, struct timespec *tp)
static int posix_clock_realtime_set(const clockid_t which_clock,
const struct timespec *tp)
{
- return do_sys_settimeofday(tp, NULL);
+ struct timespec64 tp64;
+
+ tp64 = timespec_to_timespec64(*tp);
+ return do_sys_settimeofday64(&tp64, NULL);
}

static int posix_clock_realtime_adj(const clockid_t which_clock,
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 25bdd25..6574bba 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -193,8 +193,8 @@ int do_sys_settimeofday64(const struct timespec64 *tv, const struct timezone *tz
SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv,
struct timezone __user *, tz)
{
+ struct timespec64 new_ts;
struct timeval user_tv;
- struct timespec new_ts;
struct timezone new_tz;

if (tv) {
@@ -212,7 +212,7 @@ SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv,
return -EFAULT;
}

- return do_sys_settimeofday(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
+ return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
}

SYSCALL_DEFINE1(adjtimex, struct timex __user *, txc_p)
--
2.7.4
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