[PATCH v3 6/7] timex: use __kernel_timex internally
From: Deepa Dinamani <hidden>
Date: 2018-07-07 05:44:24
Also in:
linux-alpha, lkml
Subsystem:
alpha port, networking drivers, posix clocks and timers, ptp hardware clock support, the rest, timekeeping, clocksource core, ntp, alarmtimer · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Anna-Maria Behnsen, Frederic Weisbecker, Thomas Gleixner, Richard Cochran, Linus Torvalds, John Stultz
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 <redacted>
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;
--
2.17.1