struct timex is not y2038 safe. Replace all uses of timex with y2038 safe __kernel_timex.
Note that struct __kernel_timex is an ABI interface definition. We could define a new structure based on __kernel_timex that is only available internally instead. Right now, there isn't a strong motivation for this as the structure is isolated to a few defined struct timex interfaces and such a structure would be exactly the same as struct timex.
The patch was generated by the following coccinelle script:
virtual patch
@depends on patch forall@ identifier ts; expression e; @@ ( - struct timex ts; + struct __kernel_timex ts; | - struct timex ts = {}; + struct __kernel_timex ts = {}; | - struct timex ts = e; + struct __kernel_timex ts = e; | - struct timex *ts; + struct __kernel_timex *ts; | (memset | copy_from_user | copy_to_user )(..., - sizeof(struct timex)) + sizeof(struct __kernel_timex)) )
@depends on patch forall@ identifier ts; identifier fn; @@ fn(..., - struct timex *ts, + struct __kernel_timex *ts, ...) { ... }
@depends on patch forall@ identifier ts; identifier fn; @@ fn(..., - struct timex *ts) { + struct __kernel_timex *ts) { ... }
Signed-off-by: Deepa Dinamani deepa.kernel@gmail.com Cc: linux-alpha@vger.kernel.org Cc: netdev@vger.kernel.org --- arch/alpha/kernel/osf_sys.c | 2 +- drivers/ptp/ptp_clock.c | 2 +- include/linux/compat_time.h | 6 +++--- include/linux/posix-clock.h | 2 +- include/linux/timex.h | 2 +- kernel/time/ntp.c | 12 +++++++----- kernel/time/ntp_internal.h | 2 +- kernel/time/posix-clock.c | 2 +- kernel/time/posix-timers.c | 4 ++-- kernel/time/posix-timers.h | 2 +- kernel/time/time.c | 14 +++++++------- kernel/time/timekeeping.c | 4 ++-- 12 files changed, 28 insertions(+), 26 deletions(-)
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 6e921754c8fc..ec86e77d3055 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -1260,7 +1260,7 @@ struct timex32 {
SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) { - struct timex txc; + struct __kernel_timex txc; int ret;
/* copy relevant bits of struct timex. */ diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index 7eacc1c4b3b1..f2147e9dd3ca 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -121,7 +121,7 @@ static int ptp_clock_gettime(struct posix_clock *pc, struct timespec64 *tp) return err; }
-static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) +static int ptp_clock_adjtime(struct posix_clock *pc, struct __kernel_timex *tx) { struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); struct ptp_clock_info *ops; diff --git a/include/linux/compat_time.h b/include/linux/compat_time.h index f04454e1b863..25dbd59b3b43 100644 --- a/include/linux/compat_time.h +++ b/include/linux/compat_time.h @@ -59,8 +59,8 @@ extern int get_compat_itimerspec64(struct itimerspec64 *its, const struct compat_itimerspec __user *uits); extern int put_compat_itimerspec64(const struct itimerspec64 *its, struct compat_itimerspec __user *uits); -struct timex; -int compat_get_timex(struct timex *, const struct compat_timex __user *); -int compat_put_timex(struct compat_timex __user *, const struct timex *); +struct __kernel_timex; +int compat_get_timex(struct __kernel_timex *, const struct compat_timex __user *); +int compat_put_timex(struct compat_timex __user *, const struct __kernel_timex *);
#endif /* _LINUX_COMPAT_TIME_H */ diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h index 3a3bc71017d5..18674d7d5b1c 100644 --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -51,7 +51,7 @@ struct posix_clock; struct posix_clock_operations { struct module *owner;
- int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx); + int (*clock_adjtime)(struct posix_clock *pc, struct __kernel_timex *tx);
int (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts);
diff --git a/include/linux/timex.h b/include/linux/timex.h index 7f40e9e42ecc..cb894730463c 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -158,7 +158,7 @@ extern unsigned long tick_nsec; /* SHIFTED_HZ period (nsec) */ #define NTP_INTERVAL_FREQ (HZ) #define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ)
-extern int do_adjtimex(struct timex *); +extern int do_adjtimex(struct __kernel_timex *); extern void hardpps(const struct timespec64 *, const struct timespec64 *);
int read_current_timer(unsigned long *timer_val); diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 10a79053e82f..7da9eb8adfd4 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -189,7 +189,7 @@ static inline int is_error_status(int status) && (status & (STA_PPSWANDER|STA_PPSERROR))); }
-static inline void pps_fill_timex(struct timex *txc) +static inline void pps_fill_timex(struct __kernel_timex *txc) { txc->ppsfreq = shift_right((pps_freq >> PPM_SCALE_INV_SHIFT) * PPM_SCALE_INV, NTP_SCALE_SHIFT); @@ -221,7 +221,7 @@ static inline int is_error_status(int status) return status & (STA_UNSYNC|STA_CLOCKERR); }
-static inline void pps_fill_timex(struct timex *txc) +static inline void pps_fill_timex(struct __kernel_timex *txc) { /* PPS is not implemented, so these are zero */ txc->ppsfreq = 0; @@ -642,7 +642,8 @@ void ntp_notify_cmos_timer(void) /* * Propagate a new txc->status value into the NTP state: */ -static inline void process_adj_status(struct timex *txc, struct timespec64 *ts) +static inline void process_adj_status(struct __kernel_timex *txc, + struct timespec64 *ts) { if ((time_status & STA_PLL) && !(txc->status & STA_PLL)) { time_state = TIME_OK; @@ -665,7 +666,7 @@ static inline void process_adj_status(struct timex *txc, struct timespec64 *ts) }
-static inline void process_adjtimex_modes(struct timex *txc, +static inline void process_adjtimex_modes(struct __kernel_timex *txc, struct timespec64 *ts, s32 *time_tai) { @@ -718,7 +719,8 @@ static inline void process_adjtimex_modes(struct timex *txc, * adjtimex mainly allows reading (and writing, if superuser) of * kernel time-keeping variables. used by xntpd. */ -int __do_adjtimex(struct timex *txc, struct timespec64 *ts, s32 *time_tai) +int __do_adjtimex(struct __kernel_timex *txc, struct timespec64 *ts, + s32 *time_tai) { int result;
diff --git a/kernel/time/ntp_internal.h b/kernel/time/ntp_internal.h index 909bd1f1bfb1..4386138bed32 100644 --- a/kernel/time/ntp_internal.h +++ b/kernel/time/ntp_internal.h @@ -8,6 +8,6 @@ extern void ntp_clear(void); extern u64 ntp_tick_length(void); extern ktime_t ntp_get_next_leap(void); extern int second_overflow(time64_t secs); -extern int __do_adjtimex(struct timex *, struct timespec64 *, s32 *); +extern int __do_adjtimex(struct __kernel_timex *, struct timespec64 *, s32 *); extern void __hardpps(const struct timespec64 *, const struct timespec64 *); #endif /* _LINUX_NTP_INTERNAL_H */ diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index fe56c4e06c51..a138642553cf 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -241,7 +241,7 @@ static void put_clock_desc(struct posix_clock_desc *cd) fput(cd->fp); }
-static int pc_clock_adjtime(clockid_t id, struct timex *tx) +static int pc_clock_adjtime(clockid_t id, struct __kernel_timex *tx) { struct posix_clock_desc cd; int err; diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 3ac7295306dc..a2595cb0cb16 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -209,7 +209,7 @@ static int posix_clock_realtime_set(const clockid_t which_clock, }
static int posix_clock_realtime_adj(const clockid_t which_clock, - struct timex *t) + struct __kernel_timex *t) { return do_adjtimex(t); } @@ -1087,7 +1087,7 @@ SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock, struct timex __user *, utx) { const struct k_clock *kc = clockid_to_kclock(which_clock); - struct timex ktx; + struct __kernel_timex ktx; int err;
if (!kc) diff --git a/kernel/time/posix-timers.h b/kernel/time/posix-timers.h index ddb21145211a..de5daa6d975a 100644 --- a/kernel/time/posix-timers.h +++ b/kernel/time/posix-timers.h @@ -8,7 +8,7 @@ struct k_clock { const struct timespec64 *tp); int (*clock_get)(const clockid_t which_clock, struct timespec64 *tp); - int (*clock_adj)(const clockid_t which_clock, struct timex *tx); + int (*clock_adj)(const clockid_t which_clock, struct __kernel_timex *tx); int (*timer_create)(struct k_itimer *timer); int (*nsleep)(const clockid_t which_clock, int flags, const struct timespec64 *); diff --git a/kernel/time/time.c b/kernel/time/time.c index c40cce820380..2c5afb008b14 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -265,24 +265,24 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
SYSCALL_DEFINE1(adjtimex, struct timex __user *, txc_p) { - struct timex txc; /* Local copy of parameter */ + struct __kernel_timex txc; /* Local copy of parameter */ int ret;
/* Copy the user data space into the kernel copy * structure. But bear in mind that the structures * may change */ - if (copy_from_user(&txc, txc_p, sizeof(struct timex))) + if (copy_from_user(&txc, txc_p, sizeof(struct __kernel_timex))) return -EFAULT; ret = do_adjtimex(&txc); - return copy_to_user(txc_p, &txc, sizeof(struct timex)) ? -EFAULT : ret; + return copy_to_user(txc_p, &txc, sizeof(struct __kernel_timex)) ? -EFAULT : ret; }
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp) { - struct timex txc; + struct __kernel_timex txc; int err, ret;
err = compat_get_timex(&txc, utp); @@ -979,11 +979,11 @@ int put_compat_itimerspec64(const struct itimerspec64 *its, } EXPORT_SYMBOL_GPL(put_compat_itimerspec64);
-int compat_get_timex(struct timex *txc, const struct compat_timex __user *utp) +int compat_get_timex(struct __kernel_timex *txc, const struct compat_timex __user *utp) { struct compat_timex tx32;
- memset(txc, 0, sizeof(struct timex)); + memset(txc, 0, sizeof(struct __kernel_timex)); if (copy_from_user(&tx32, utp, sizeof(struct compat_timex))) return -EFAULT;
@@ -1011,7 +1011,7 @@ int compat_get_timex(struct timex *txc, const struct compat_timex __user *utp) return 0; }
-int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc) +int compat_put_timex(struct compat_timex __user *utp, const struct __kernel_timex *txc) { struct compat_timex tx32;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 77c436a0070b..9bb7e977f50e 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -2220,7 +2220,7 @@ ktime_t ktime_get_update_offsets_now(unsigned int *cwsseq, ktime_t *offs_real, /** * timekeeping_validate_timex - Ensures the timex is ok for use in do_adjtimex */ -static int timekeeping_validate_timex(struct timex *txc) +static int timekeeping_validate_timex(struct __kernel_timex *txc) { if (txc->modes & ADJ_ADJTIME) { /* singleshot must not be used with any other mode bits */ @@ -2286,7 +2286,7 @@ static int timekeeping_validate_timex(struct timex *txc) /** * do_adjtimex() - Accessor function to NTP __do_adjtimex function */ -int do_adjtimex(struct timex *txc) +int do_adjtimex(struct __kernel_timex *txc) { struct timekeeper *tk = &tk_core.timekeeper; unsigned long flags;