Y2038

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1140 discussions

[PATCH v5 20/24] posix-clock: Convert to y2038 safe callbacks

by Baolin Wang

The clock_getres()/clock_get()/clock_set()/timer_set()/timer_get() callbacks in struct k_clock are not year 2038 safe on 32bit systems, and it need convert to safe callbacks which use struct timespec64 or struct itimerspec64. The clock_gettime()/clock_settime()/clock_getres()/timer_gettime()/ timer_settime() callbacks in struct posix_clock_operations are not year 2038 safe on 32bit systems, and it need convert to year 2038 safe callbacks which use struct timespec64 or struct itimerspec64. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- drivers/ptp/ptp_clock.c | 22 +++++++--------------- include/linux/posix-clock.h | 10 +++++----- kernel/time/posix-clock.c | 20 ++++++++++---------- 3 files changed, 22 insertions(+), 30 deletions(-) diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index 2e481b9..7040f20 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -97,31 +97,25 @@ static s32 scaled_ppm_to_ppb(long ppm) /* posix clock implementation */ -static int ptp_clock_getres(struct posix_clock *pc, struct timespec *tp) +static int ptp_clock_getres(struct posix_clock *pc, struct timespec64 *tp) { tp->tv_sec = 0; tp->tv_nsec = 1; return 0; } -static int ptp_clock_settime(struct posix_clock *pc, const struct timespec *tp) +static int ptp_clock_settime(struct posix_clock *pc, const struct timespec64 *tp) { struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); - struct timespec64 ts = timespec_to_timespec64(*tp); - return ptp->info->settime64(ptp->info, &ts); + return ptp->info->settime64(ptp->info, tp); } -static int ptp_clock_gettime(struct posix_clock *pc, struct timespec *tp) +static int ptp_clock_gettime(struct posix_clock *pc, struct timespec64 *tp) { struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); - struct timespec64 ts; - int err; - err = ptp->info->gettime64(ptp->info, &ts); - if (!err) - *tp = timespec64_to_timespec(ts); - return err; + return ptp->info->gettime64(ptp->info, tp); } static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) @@ -133,8 +127,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) ops = ptp->info; if (tx->modes & ADJ_SETOFFSET) { - struct timespec ts; - ktime_t kt; + struct timespec64 ts; s64 delta; ts.tv_sec = tx->time.tv_sec; @@ -146,8 +139,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) if ((unsigned long) ts.tv_nsec >= NSEC_PER_SEC) return -EINVAL; - kt = timespec_to_ktime(ts); - delta = ktime_to_ns(kt); + delta = timespec64_to_ns(&ts); err = ops->adjtime(ops, delta); } else if (tx->modes & ADJ_FREQUENCY) { s32 ppb = scaled_ppm_to_ppb(tx->freq); diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h index 34c4498..83b22ae 100644 --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -59,23 +59,23 @@ struct posix_clock_operations { int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx); - int (*clock_gettime)(struct posix_clock *pc, struct timespec *ts); + int (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts); - int (*clock_getres) (struct posix_clock *pc, struct timespec *ts); + int (*clock_getres) (struct posix_clock *pc, struct timespec64 *ts); int (*clock_settime)(struct posix_clock *pc, - const struct timespec *ts); + const struct timespec64 *ts); int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit); int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit); void (*timer_gettime)(struct posix_clock *pc, - struct k_itimer *kit, struct itimerspec *tsp); + struct k_itimer *kit, struct itimerspec64 *tsp); int (*timer_settime)(struct posix_clock *pc, struct k_itimer *kit, int flags, - struct itimerspec *tsp, struct itimerspec *old); + struct itimerspec64 *tsp, struct itimerspec64 *old); /* * Optional character device methods: */ diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index ce033c7..e21e4c1 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -297,7 +297,7 @@ out: 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; int err; @@ -316,7 +316,7 @@ static int pc_clock_gettime(clockid_t id, struct timespec *ts) return err; } -static int pc_clock_getres(clockid_t id, struct timespec *ts) +static int pc_clock_getres(clockid_t id, struct timespec64 *ts) { struct posix_clock_desc cd; int err; @@ -335,7 +335,7 @@ static int pc_clock_getres(clockid_t id, struct timespec *ts) return err; } -static int pc_clock_settime(clockid_t id, const struct timespec *ts) +static int pc_clock_settime(clockid_t id, const struct timespec64 *ts) { struct posix_clock_desc cd; int err; @@ -399,7 +399,7 @@ static int pc_timer_delete(struct k_itimer *kit) return err; } -static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts) +static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec64 *ts) { clockid_t id = kit->it_clock; struct posix_clock_desc cd; @@ -414,7 +414,7 @@ static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts) } static int pc_timer_settime(struct k_itimer *kit, int flags, - struct itimerspec *ts, struct itimerspec *old) + struct itimerspec64 *ts, struct itimerspec64 *old) { clockid_t id = kit->it_clock; struct posix_clock_desc cd; @@ -435,12 +435,12 @@ static int pc_timer_settime(struct k_itimer *kit, int flags, } struct k_clock clock_posix_dynamic = { - .clock_getres = pc_clock_getres, - .clock_set = pc_clock_settime, - .clock_get = pc_clock_gettime, + .clock_getres64 = pc_clock_getres, + .clock_set64 = pc_clock_settime, + .clock_get64 = pc_clock_gettime, .clock_adj = pc_clock_adjtime, .timer_create = pc_timer_create, - .timer_set = pc_timer_settime, + .timer_set64 = pc_timer_settime, .timer_del = pc_timer_delete, - .timer_get = pc_timer_gettime, + .timer_get64 = pc_timer_gettime, }; -- 1.7.9.5

10 years, 5 months

[PATCH v5 19/24] alarmtimer: Convert to y2038 safe callbacks

by Baolin Wang

10 years, 5 months

[PATCH v5 18/24] mmtimer: Convert to y2038 safe callbacks

by Baolin Wang

10 years, 5 months

[PATCH v5 17/24] posix-timers: Convert to y2038 safe callbacks

by Baolin Wang

The clock_getres()/clock_get()/clock_set()/timer_set()/timer_get() callbacks in struct k_clock are not year 2038 safe on 32bit systems, and it need convert to safe callbacks which use struct timespec64 or struct itimerspec64. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- kernel/time/posix-timers.c | 94 ++++++++++++++++++++++---------------------- 1 file changed, 47 insertions(+), 47 deletions(-) diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 029a2b6..80f630a 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -132,9 +132,9 @@ static struct k_clock posix_clocks[MAX_CLOCKS]; static int common_nsleep(const clockid_t, int flags, struct timespec *t, struct timespec __user *rmtp); static int common_timer_create(struct k_itimer *new_timer); -static void common_timer_get(struct k_itimer *, struct itimerspec *); +static void common_timer_get(struct k_itimer *, struct itimerspec64 *); static int common_timer_set(struct k_itimer *, int, - struct itimerspec *, struct itimerspec *); + struct itimerspec64 *, struct itimerspec64 *); static int common_timer_del(struct k_itimer *timer); static enum hrtimer_restart posix_timer_fn(struct hrtimer *data); @@ -233,17 +233,17 @@ 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; } /* Set clock_realtime */ static int posix_clock_realtime_set(const clockid_t which_clock, - const struct timespec *tp) + const struct timespec64 *tp) { - return do_sys_settimeofday(tp, NULL); + return do_sys_settimeofday64(tp, NULL); } static int posix_clock_realtime_adj(const clockid_t which_clock, @@ -255,44 +255,44 @@ 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; } -static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp) +static int posix_get_coarse_res(const clockid_t which_clock, struct timespec64 *tp) { - *tp = ktime_to_timespec(KTIME_LOW_RES); + *tp = ktime_to_timespec64(KTIME_LOW_RES); 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; } @@ -302,7 +302,7 @@ static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp) return 0; } -static int posix_get_hrtimer_res(clockid_t which_clock, struct timespec *tp) +static int posix_get_hrtimer_res(clockid_t which_clock, struct timespec64 *tp) { tp->tv_sec = 0; tp->tv_nsec = hrtimer_resolution; @@ -315,57 +315,57 @@ static int posix_get_hrtimer_res(clockid_t which_clock, struct timespec *tp) static __init int init_posix_timers(void) { struct k_clock clock_realtime = { - .clock_getres = posix_get_hrtimer_res, - .clock_get = posix_clock_realtime_get, - .clock_set = posix_clock_realtime_set, + .clock_getres64 = posix_get_hrtimer_res, + .clock_get64 = posix_clock_realtime_get, + .clock_set64 = posix_clock_realtime_set, .clock_adj = posix_clock_realtime_adj, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, .timer_create = common_timer_create, - .timer_set = common_timer_set, - .timer_get = common_timer_get, + .timer_set64 = common_timer_set, + .timer_get64 = common_timer_get, .timer_del = common_timer_del, }; struct k_clock clock_monotonic = { - .clock_getres = posix_get_hrtimer_res, - .clock_get = posix_ktime_get_ts, + .clock_getres64 = posix_get_hrtimer_res, + .clock_get64 = posix_ktime_get_ts, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, .timer_create = common_timer_create, - .timer_set = common_timer_set, - .timer_get = common_timer_get, + .timer_set64 = common_timer_set, + .timer_get64 = common_timer_get, .timer_del = common_timer_del, }; struct k_clock clock_monotonic_raw = { - .clock_getres = posix_get_hrtimer_res, - .clock_get = posix_get_monotonic_raw, + .clock_getres64 = posix_get_hrtimer_res, + .clock_get64 = posix_get_monotonic_raw, }; struct k_clock clock_realtime_coarse = { - .clock_getres = posix_get_coarse_res, - .clock_get = posix_get_realtime_coarse, + .clock_getres64 = posix_get_coarse_res, + .clock_get64 = posix_get_realtime_coarse, }; struct k_clock clock_monotonic_coarse = { - .clock_getres = posix_get_coarse_res, - .clock_get = posix_get_monotonic_coarse, + .clock_getres64 = posix_get_coarse_res, + .clock_get64 = posix_get_monotonic_coarse, }; struct k_clock clock_tai = { - .clock_getres = posix_get_hrtimer_res, + .clock_getres64 = posix_get_hrtimer_res, .clock_get64 = posix_get_tai, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, .timer_create = common_timer_create, - .timer_set = common_timer_set, - .timer_get = common_timer_get, + .timer_set64 = common_timer_set, + .timer_get64 = common_timer_get, .timer_del = common_timer_del, }; struct k_clock clock_boottime = { - .clock_getres = posix_get_hrtimer_res, - .clock_get = posix_get_boottime, + .clock_getres64 = posix_get_hrtimer_res, + .clock_get64 = posix_get_boottime, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, .timer_create = common_timer_create, - .timer_set = common_timer_set, - .timer_get = common_timer_get, + .timer_set64 = common_timer_set, + .timer_get64 = common_timer_get, .timer_del = common_timer_del, }; @@ -842,7 +842,7 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags) * report. */ static void -common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) +common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting) { ktime_t now, remaining, iv; struct hrtimer *timer = &timr->it.real.timer; @@ -853,7 +853,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) /* interval timer ? */ if (iv.tv64) - cur_setting->it_interval = ktime_to_timespec(iv); + cur_setting->it_interval = ktime_to_timespec64(iv); else if (!hrtimer_active(timer) && (timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) return; @@ -879,7 +879,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) if ((timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) cur_setting->it_value.tv_nsec = 1; } else - cur_setting->it_value = ktime_to_timespec(remaining); + cur_setting->it_value = ktime_to_timespec64(remaining); } static int __timer_gettime(timer_t timer_id, struct itimerspec64 *cur_setting) @@ -946,7 +946,7 @@ SYSCALL_DEFINE1(timer_getoverrun, timer_t, timer_id) /* timr->it_lock is taken. */ static int common_timer_set(struct k_itimer *timr, int flags, - struct itimerspec *new_setting, struct itimerspec *old_setting) + struct itimerspec64 *new_setting, struct itimerspec64 *old_setting) { struct hrtimer *timer = &timr->it.real.timer; enum hrtimer_mode mode; @@ -975,10 +975,10 @@ common_timer_set(struct k_itimer *timr, int flags, hrtimer_init(&timr->it.real.timer, timr->it_clock, mode); timr->it.real.timer.function = posix_timer_fn; - hrtimer_set_expires(timer, timespec_to_ktime(new_setting->it_value)); + hrtimer_set_expires(timer, timespec64_to_ktime(new_setting->it_value)); /* Convert interval */ - timr->it.real.interval = timespec_to_ktime(new_setting->it_interval); + timr->it.real.interval = timespec64_to_ktime(new_setting->it_interval); /* SIGEV_NONE timers are not queued ! See common_timer_get */ if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) { -- 1.7.9.5

10 years, 5 months

[PATCH v5 16/24] timekeeping: Change the implementation of timekeeping_clocktai()

by Baolin Wang

The timekeeping_clocktai() function is not year 2038 safe on 32bit systems, change its implementation with using struct timespec64. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/timekeeping.h | 4 ++-- kernel/time/posix-timers.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 2dcc86b..07581c0 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -256,9 +256,9 @@ static inline void get_monotonic_boottime64(struct timespec64 *ts) *ts = ktime_to_timespec64(ktime_get_boottime()); } -static inline void timekeeping_clocktai(struct timespec *ts) +static inline void timekeeping_clocktai(struct timespec64 *ts) { - *ts = ktime_to_timespec(ktime_get_clocktai()); + *ts = ktime_to_timespec64(ktime_get_clocktai()); } /* diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 0b0663a..029a2b6 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -296,7 +296,7 @@ static int posix_get_boottime(const clockid_t which_clock, struct timespec *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); return 0; @@ -350,7 +350,7 @@ static __init int init_posix_timers(void) }; struct k_clock clock_tai = { .clock_getres = posix_get_hrtimer_res, - .clock_get = posix_get_tai, + .clock_get64 = posix_get_tai, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, .timer_create = common_timer_create, -- 1.7.9.5

10 years, 5 months

[PATCH v5 05/24] posix-timers: Introduce {get, put}_timespec and {get, put}_itimerspec

by Baolin Wang

These are new helper macros that convert between a user timespec/ itimerspec and a kernel timespec64/itimerspec64 structure. When converting syscall functions, it need to deal with these conversions: user timespec (32 bit), kernel timespec (32 bit) user timespec (64 bit), kernel timespec (64 bit) user timespec (32 bit), kernel timespec64 (64 bit) user timespec (64 bit), kernel timespec64 (64 bit) user itimerspec (32 bit), kernel itimerspec (32 bit) user itimerspec (64 bit), kernel itimerspec (64 bit) user itimerspec (32 bit), kernel itimerspec64 (64 bit) user itimerspec (64 bit), kernel itimerspec64 (64 bit) In order to handle all these conversions, and ensure that it can change over all callers at the same time with the structure type above, and introduce the get/put macros based on __put_user() and __get_user(). Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- kernel/time/posix-timers.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 31d11ac..5ddd912 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -147,6 +147,35 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags); __timr; \ }) +#define __get_timespec(kts, uts) \ + (__get_user((kts)->tv_sec, &(uts)->tv_sec) || \ + __get_user((kts)->tv_nsec, &(uts)->tv_nsec)) + +#define __put_timespec(kts, uts) \ + (__put_user((kts)->tv_sec, &(uts)->tv_sec) || \ + __put_user((kts)->tv_nsec, &(uts)->tv_nsec)) + +#define get_timespec(kts, uts) \ + ((access_ok(VERIFY_READ, (uts), sizeof(*(uts))) || \ + __get_timespec((kts), (uts))) ? \ + -EFAULT : 0) + +#define put_timespec(kts, uts) \ + ((access_ok(VERIFY_WRITE, (uts), sizeof(*(uts))) || \ + __put_timespec((kts), (uts))) ? \ + -EFAULT : 0) + +#define get_itimerspec(kit, uit) \ + ((access_ok(VERIFY_READ, (uit), sizeof(*(uit))) || \ + __get_timespec(&(kit)->it_interval, &(uit)->it_interval) || \ + __get_timespec(&(kit)->it_value, &(uit)->it_value))) + +#define put_itimerspec(kit, uit) \ + ((access_ok(VERIFY_WRITE, (uit), sizeof(*(uit))) || \ + __put_timespec(&(kit)->it_interval, &(uit)->it_interval) || \ + __put_timespec(&(kit)->it_value, &(uit)->it_value)) ? \ + -EFAULT : 0) + static int hash(struct signal_struct *sig, unsigned int nr) { return hash_32(hash32_ptr(sig) ^ nr, HASH_BITS(posix_timers_hashtable)); -- 1.7.9.5

10 years, 5 months

[PATCH v5 04/24] time: Introduce do_sys_settimeofday64()

by Baolin Wang

Due to the do_sys_settimeofday() with timespec type is not year 2038 safe on 32bit systems, and it should introduce the do_sys_settimeofday64() function with timespec64 type to make it is ready for 2038 issue. For removing the old do_sys_settimeofday() function with timespec type conveniently in future, it should move the do_sys_settimeofday() function to the timekeeping.h file as a 'static inline' helper that just calls do_sys_settimeofday64(). Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/timekeeping.h | 11 +++++++++-- kernel/time/time.c | 8 ++++---- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index f886bdb..2dcc86b 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -11,8 +11,15 @@ extern int timekeeping_suspended; */ extern void do_gettimeofday(struct timeval *tv); extern int do_settimeofday64(const struct timespec64 *ts); -extern int do_sys_settimeofday(const struct timespec *tv, - const struct timezone *tz); +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 = timespec_to_timespec64(*tv); + + return do_sys_settimeofday64(&ts64, tz); +} /* * Kernel time accessors diff --git a/kernel/time/time.c b/kernel/time/time.c index 972e3bb..5aefe2d 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -160,15 +160,15 @@ static inline void warp_clock(void) * various programs will get confused when the clock gets warped. */ -int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz) +int do_sys_settimeofday64(const struct timespec64 *tv, const struct timezone *tz) { static int firsttime = 1; int error = 0; - if (tv && !timespec_valid(tv)) + if (tv && !timespec64_valid(tv)) return -EINVAL; - error = security_settime(tv, tz); + error = security_settime64(tv, tz); if (error) return error; @@ -186,7 +186,7 @@ int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz) } } if (tv) - return do_settimeofday(tv); + return do_settimeofday64(tv); return 0; } -- 1.7.9.5

10 years, 5 months

[PATCH v5 03/24] security: Introduce security_settime64()

by Baolin Wang

Due to the security_settime() with timespec type is not year 2038 safe on 32bit systems. Introduce the security_settime64() function with timespec64 type. Change the settime() callback of security_list_options structure argument with timespec64 type as a helper function wrapped by security_settime64(). The cap_settime() as a helper function is only called by security_settime64() and security_settime() functions, and it need change the argument with timespec64 type. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/lsm_hooks.h | 5 +++-- include/linux/security.h | 20 +++++++++++++++++--- security/commoncap.c | 2 +- security/security.c | 2 +- 4 files changed, 22 insertions(+), 7 deletions(-) diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 9429f05..d791f35 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -1191,7 +1191,8 @@ * Return 0 if permission is granted. * @settime: * Check permission to change the system time. - * struct timespec and timezone are defined in include/linux/time.h + * struct timespec64 is defined in include/linux/time64.h and timezone + * is defined in include/linux/time.h * @ts contains new time * @tz contains new timezone * Return 0 if permission is granted. @@ -1324,7 +1325,7 @@ union security_list_options { int (*quotactl)(int cmds, int type, int id, struct super_block *sb); int (*quota_on)(struct dentry *dentry); int (*syslog)(int type); - int (*settime)(const struct timespec *ts, const struct timezone *tz); + int (*settime)(const struct timespec64 *ts, const struct timezone *tz); int (*vm_enough_memory)(struct mm_struct *mm, long pages); int (*bprm_set_creds)(struct linux_binprm *bprm); diff --git a/include/linux/security.h b/include/linux/security.h index 79d85dd..520f903 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -69,7 +69,7 @@ struct timezone; /* These functions are in security/commoncap.c */ extern int cap_capable(const struct cred *cred, struct user_namespace *ns, int cap, int audit); -extern int cap_settime(const struct timespec *ts, const struct timezone *tz); +extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); extern int cap_ptrace_traceme(struct task_struct *parent); extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -206,7 +206,13 @@ int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, int security_quotactl(int cmds, int type, int id, struct super_block *sb); int security_quota_on(struct dentry *dentry); int security_syslog(int type); -int security_settime(const struct timespec *ts, const struct timezone *tz); +int security_settime64(const struct timespec64 *ts, const struct timezone *tz); +static int security_settime(const struct timespec *ts, const struct timezone *tz) +{ + struct timespec64 ts64 = timespec_to_timespec64(*ts); + + return security_settime64(&ts64, tz); +} int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); int security_bprm_set_creds(struct linux_binprm *bprm); int security_bprm_check(struct linux_binprm *bprm); @@ -457,10 +463,18 @@ static inline int security_syslog(int type) return 0; } +static inline int security_settime64(const struct timespec64 *ts, + const struct timezone *tz) +{ + return cap_settime(ts, tz); +} + static inline int security_settime(const struct timespec *ts, const struct timezone *tz) { - return cap_settime(ts, tz); + struct timsepc64 ts64 = timespec_to_timespec64(*ts); + + return cap_settime(&ts64, tz); } static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) diff --git a/security/commoncap.c b/security/commoncap.c index d103f5a4..17b1f79 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -111,7 +111,7 @@ int cap_capable(const struct cred *cred, struct user_namespace *targ_ns, * Determine whether the current process may set the system clock and timezone * information, returning 0 if permission granted, -ve if denied. */ -int cap_settime(const struct timespec *ts, const struct timezone *tz) +int cap_settime(const struct timespec64 *ts, const struct timezone *tz) { if (!capable(CAP_SYS_TIME)) return -EPERM; diff --git a/security/security.c b/security/security.c index 595fffa..8d0dbd6 100644 --- a/security/security.c +++ b/security/security.c @@ -213,7 +213,7 @@ int security_syslog(int type) return call_int_hook(syslog, 0, type); } -int security_settime(const struct timespec *ts, const struct timezone *tz) +int security_settime64(const struct timespec64 *ts, const struct timezone *tz) { return call_int_hook(settime, 0, ts, tz); } -- 1.7.9.5

10 years, 5 months

[PATCH v5 02/24] timekeeping: Introduce current_kernel_time64()

by Baolin Wang

The current_kernel_time() is not year 2038 safe on 32bit systems due to return timespec value. Introduce current_kernel_time64() function which returns timespec64 value, also as a helper function calling by current_kernel_time(). Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/timekeeping.h | 10 +++++++++- kernel/time/timekeeping.c | 6 +++--- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 3aa72e6..f886bdb 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -18,10 +18,18 @@ extern int do_sys_settimeofday(const struct timespec *tv, * Kernel time accessors */ unsigned long get_seconds(void); -struct timespec current_kernel_time(void); +struct timespec64 current_kernel_time64(void); /* does not take xtime_lock */ struct timespec __current_kernel_time(void); +static inline struct timespec current_kernel_time(void) +{ + struct timespec64 now = current_kernel_time64(); + + return timespec64_to_timespec(now); +} + /* * timespec based interfaces */ diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 0d784b3..5fe9b77 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1857,7 +1857,7 @@ struct timespec __current_kernel_time(void) return timespec64_to_timespec(tk_xtime(tk)); } -struct timespec current_kernel_time(void) +struct timespec64 current_kernel_time64(void) { struct timekeeper *tk = &tk_core.timekeeper; struct timespec64 now; @@ -1869,9 +1869,9 @@ struct timespec current_kernel_time(void) now = tk_xtime(tk); } while (read_seqcount_retry(&tk_core.seq, seq)); - return timespec64_to_timespec(now); + return now; } -EXPORT_SYMBOL(current_kernel_time); +EXPORT_SYMBOL(current_kernel_time64); struct timespec64 get_monotonic_coarse64(void) { -- 1.7.9.5

10 years, 5 months

[PATCH v5 01/24] time: Introduce struct itimerspec64

by Baolin Wang

The itimerspec is not year 2038 safe on 32bit systems due to the limitation of the struct timespec members. Introduce itimerspec64 which uses struct timespec64 instead and provide conversion functions. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/time64.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/include/linux/time64.h b/include/linux/time64.h index 12d4e82..132062b 100644 --- a/include/linux/time64.h +++ b/include/linux/time64.h @@ -12,11 +12,18 @@ typedef __s64 time64_t; */ #if __BITS_PER_LONG == 64 # define timespec64 timespec +#define itimerspec64 itimerspec #else struct timespec64 { time64_t tv_sec; /* seconds */ long tv_nsec; /* nanoseconds */ }; + +struct itimerspec64 { + struct timespec64 it_interval; + struct timespec64 it_value; +}; + #endif /* Parameters used to convert the timespec values: */ @@ -44,6 +51,16 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts) return ts; } +static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64) +{ + return *its64; +} + +static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its) +{ + return *its; +} + # define timespec64_equal timespec_equal # define timespec64_compare timespec_compare # define set_normalized_timespec64 set_normalized_timespec @@ -76,6 +93,24 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts) return ret; } +static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64) +{ + struct itimerspec ret; + + ret.it_interval = timespec64_to_timespec(its64->it_interval); + ret.it_value = timespec64_to_timespec(its64->it_value); + return ret; +} + +static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its) +{ + struct itimerspec64 ret; + + ret.it_interval = timespec_to_timespec64(its->it_interval); + ret.it_value = timespec_to_timespec64(its->it_value); + return ret; +} + static inline int timespec64_equal(const struct timespec64 *a, const struct timespec64 *b) { -- 1.7.9.5

10 years, 5 months

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