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time: Delete do_sys_setimeofday()

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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: y2038@lists.linaro.org
Cc: john.stultz@linaro.org
Cc: arnd@arndb.de
Cc: linux-alpha@vger.kernel.org
Link: http://lkml.kernel.org/r/1490555058-4603-2-git-send-email-deepa.kernel@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Deepa Dinamani 2017-03-26 12:04:12 -07:00 committed by Thomas Gleixner
parent 5fc63f9577
commit 2ac00f17b2
6 changed files with 15 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/alpha/kernel/osf_sys.c
View File

@ -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);

15
include/linux/timekeeping.h
View File

@ -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
*/

4
kernel/compat.c
View File

@ -108,8 +108,8 @@ COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_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) {
@ -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)

5
kernel/time/posix-stubs.c
View File

@ -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,

5
kernel/time/posix-timers.c
View File

@ -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,

4
kernel/time/time.c
View File

@ -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)