Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull year 2038 updates from Thomas Gleixner:
 "Another round of changes to make the kernel ready for 2038. After lots
  of preparatory work this is the first set of syscalls which are 2038
  safe:

    403 clock_gettime64
    404 clock_settime64
    405 clock_adjtime64
    406 clock_getres_time64
    407 clock_nanosleep_time64
    408 timer_gettime64
    409 timer_settime64
    410 timerfd_gettime64
    411 timerfd_settime64
    412 utimensat_time64
    413 pselect6_time64
    414 ppoll_time64
    416 io_pgetevents_time64
    417 recvmmsg_time64
    418 mq_timedsend_time64
    419 mq_timedreceiv_time64
    420 semtimedop_time64
    421 rt_sigtimedwait_time64
    422 futex_time64
    423 sched_rr_get_interval_time64

  The syscall numbers are identical all over the architectures"

* 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  riscv: Use latest system call ABI
  checksyscalls: fix up mq_timedreceive and stat exceptions
  unicore32: Fix __ARCH_WANT_STAT64 definition
  asm-generic: Make time32 syscall numbers optional
  asm-generic: Drop getrlimit and setrlimit syscalls from default list
  32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option
  compat ABI: use non-compat openat and open_by_handle_at variants
  y2038: add 64-bit time_t syscalls to all 32-bit architectures
  y2038: rename old time and utime syscalls
  y2038: remove struct definition redirects
  y2038: use time32 syscall names on 32-bit
  syscalls: remove obsolete __IGNORE_ macros
  y2038: syscalls: rename y2038 compat syscalls
  x86/x32: use time64 versions of sigtimedwait and recvmmsg
  timex: change syscalls to use struct __kernel_timex
  timex: use __kernel_timex internally
  sparc64: add custom adjtimex/clock_adjtime functions
  time: fix sys_timer_settime prototype
  time: Add struct __kernel_timex
  time: make adjtime compat handling available for 32 bit
  ...

1 files changed, 32 insertions, 40 deletions

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 0e84bb72a3da..29176635991f 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -179,7 +179,7 @@ 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);
 }
@@ -730,8 +730,8 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
 
-COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
-		       struct old_itimerspec32 __user *, setting)
+SYSCALL_DEFINE2(timer_gettime32, timer_t, timer_id,
+		struct old_itimerspec32 __user *, setting)
 {
 	struct itimerspec64 cur_setting;
 
@@ -903,9 +903,9 @@ SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
 }
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
-		       struct old_itimerspec32 __user *, new,
-		       struct old_itimerspec32 __user *, old)
+SYSCALL_DEFINE4(timer_settime32, timer_t, timer_id, int, flags,
+		struct old_itimerspec32 __user *, new,
+		struct old_itimerspec32 __user *, old)
 {
 	struct itimerspec64 new_spec, old_spec;
 	struct itimerspec64 *rtn = old ? &old_spec : NULL;
@@ -1047,22 +1047,28 @@ SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
 	return error;
 }
 
-SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
-		struct timex __user *, utx)
+int do_clock_adjtime(const clockid_t which_clock, struct __kernel_timex * ktx)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
-	struct timex ktx;
-	int err;
 
 	if (!kc)
 		return -EINVAL;
 	if (!kc->clock_adj)
 		return -EOPNOTSUPP;
 
+	return kc->clock_adj(which_clock, ktx);
+}
+
+SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
+		struct __kernel_timex __user *, utx)
+{
+	struct __kernel_timex ktx;
+	int err;
+
 	if (copy_from_user(&ktx, utx, sizeof(ktx)))
 		return -EFAULT;
 
-	err = kc->clock_adj(which_clock, &ktx);
+	err = do_clock_adjtime(which_clock, &ktx);
 
 	if (err >= 0 && copy_to_user(utx, &ktx, sizeof(ktx)))
 		return -EFAULT;
@@ -1090,8 +1096,8 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
 
-COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
-		       struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_settime32, clockid_t, which_clock,
+		struct old_timespec32 __user *, tp)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct timespec64 ts;
@@ -1105,8 +1111,8 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
 	return kc->clock_set(which_clock, &ts);
 }
 
-COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
-		       struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_gettime32, clockid_t, which_clock,
+		struct old_timespec32 __user *, tp)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct timespec64 ts;
@@ -1123,40 +1129,26 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
 	return err;
 }
 
-#endif
-
-#ifdef CONFIG_COMPAT
-
-COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
-		       struct compat_timex __user *, utp)
+SYSCALL_DEFINE2(clock_adjtime32, clockid_t, which_clock,
+		struct old_timex32 __user *, utp)
 {
-	const struct k_clock *kc = clockid_to_kclock(which_clock);
-	struct timex ktx;
+	struct __kernel_timex ktx;
 	int err;
 
-	if (!kc)
-		return -EINVAL;
-	if (!kc->clock_adj)
-		return -EOPNOTSUPP;
-
-	err = compat_get_timex(&ktx, utp);
+	err = get_old_timex32(&ktx, utp);
 	if (err)
 		return err;
 
-	err = kc->clock_adj(which_clock, &ktx);
+	err = do_clock_adjtime(which_clock, &ktx);
 
 	if (err >= 0)
-		err = compat_put_timex(utp, &ktx);
+		err = put_old_timex32(utp, &ktx);
 
 	return err;
 }
 
-#endif
-
-#ifdef CONFIG_COMPAT_32BIT_TIME
-
-COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
-		       struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
+		struct old_timespec32 __user *, tp)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct timespec64 ts;
@@ -1212,9 +1204,9 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
 
-COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
-		       struct old_timespec32 __user *, rqtp,
-		       struct old_timespec32 __user *, rmtp)
+SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
+		struct old_timespec32 __user *, rqtp,
+		struct old_timespec32 __user *, rmtp)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct timespec64 t;