y2038: syscalls: rename y2038 compat syscalls

A lot of system calls that pass a time_t somewhere have an implementation
using a COMPAT_SYSCALL_DEFINEx() on 64-bit architectures, and have
been reworked so that this implementation can now be used on 32-bit
architectures as well.

The missing step is to redefine them using the regular SYSCALL_DEFINEx()
to get them out of the compat namespace and make it possible to build them
on 32-bit architectures.

Any system call that ends in 'time' gets a '32' suffix on its name for
that version, while the others get a '_time32' suffix, to distinguish
them from the normal version, which takes a 64-bit time argument in the
future.

In this step, only 64-bit architectures are changed, doing this rename
first lets us avoid touching the 32-bit architectures twice.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

8 files changed, 48 insertions, 46 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index be3bff2315ff..caead6c113d4 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -3812,7 +3812,7 @@ err_unlock:
 #endif /* CONFIG_COMPAT */
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
+SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
                 struct old_timespec32 __user *, utime, u32 __user *, uaddr2,
                 u32, val3)
 {
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a674c7db2f29..62862419cd05 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5252,9 +5252,8 @@ SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid,
 }
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval,
-                       compat_pid_t, pid,
-                       struct old_timespec32 __user *, interval)
+SYSCALL_DEFINE2(sched_rr_get_interval_time32, pid_t, pid,
+                struct old_timespec32 __user *, interval)
 {
         struct timespec64 t;
         int retval = sched_rr_get_interval(pid, &t);
diff --git a/kernel/signal.c b/kernel/signal.c
index e1d7ad8e6ab1..af27629918cf 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3397,7 +3397,7 @@ COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait_time64, compat_sigset_t __user *, uthese,
 }
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese,
+COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait_time32, compat_sigset_t __user *, uthese,
                 struct compat_siginfo __user *, uinfo,
                 struct old_timespec32 __user *, uts, compat_size_t, sigsetsize)
 {
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index ce04431a40d1..85e5ccec0955 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -42,9 +42,11 @@ COND_SYSCALL(io_destroy);
 COND_SYSCALL(io_submit);
 COND_SYSCALL_COMPAT(io_submit);
 COND_SYSCALL(io_cancel);
+COND_SYSCALL(io_getevents_time32);
 COND_SYSCALL(io_getevents);
+COND_SYSCALL(io_pgetevents_time32);
 COND_SYSCALL(io_pgetevents);
-COND_SYSCALL_COMPAT(io_getevents);
+COND_SYSCALL_COMPAT(io_pgetevents_time32);
 COND_SYSCALL_COMPAT(io_pgetevents);
 
 /* fs/xattr.c */
@@ -114,9 +116,9 @@ COND_SYSCALL_COMPAT(signalfd4);
 /* fs/timerfd.c */
 COND_SYSCALL(timerfd_create);
 COND_SYSCALL(timerfd_settime);
-COND_SYSCALL_COMPAT(timerfd_settime);
+COND_SYSCALL(timerfd_settime32);
 COND_SYSCALL(timerfd_gettime);
-COND_SYSCALL_COMPAT(timerfd_gettime);
+COND_SYSCALL(timerfd_gettime32);
 
 /* fs/utimes.c */
 
@@ -135,7 +137,7 @@ COND_SYSCALL(capset);
 
 /* kernel/futex.c */
 COND_SYSCALL(futex);
-COND_SYSCALL_COMPAT(futex);
+COND_SYSCALL(futex_time32);
 COND_SYSCALL(set_robust_list);
 COND_SYSCALL_COMPAT(set_robust_list);
 COND_SYSCALL(get_robust_list);
@@ -187,9 +189,9 @@ COND_SYSCALL(mq_open);
 COND_SYSCALL_COMPAT(mq_open);
 COND_SYSCALL(mq_unlink);
 COND_SYSCALL(mq_timedsend);
-COND_SYSCALL_COMPAT(mq_timedsend);
+COND_SYSCALL(mq_timedsend_time32);
 COND_SYSCALL(mq_timedreceive);
-COND_SYSCALL_COMPAT(mq_timedreceive);
+COND_SYSCALL(mq_timedreceive_time32);
 COND_SYSCALL(mq_notify);
 COND_SYSCALL_COMPAT(mq_notify);
 COND_SYSCALL(mq_getsetattr);
@@ -211,7 +213,7 @@ COND_SYSCALL(old_semctl);
 COND_SYSCALL(semctl);
 COND_SYSCALL_COMPAT(semctl);
 COND_SYSCALL(semtimedop);
-COND_SYSCALL_COMPAT(semtimedop);
+COND_SYSCALL(semtimedop_time32);
 COND_SYSCALL(semop);
 
 /* ipc/shm.c */
@@ -288,7 +290,7 @@ COND_SYSCALL(perf_event_open);
 COND_SYSCALL(accept4);
 COND_SYSCALL(recvmmsg);
 COND_SYSCALL(recvmmsg_time32);
-COND_SYSCALL_COMPAT(recvmmsg);
+COND_SYSCALL_COMPAT(recvmmsg_time32);
 COND_SYSCALL_COMPAT(recvmmsg_time64);
 
 /*
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index f5cfa1b73d6f..0f5f96075110 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1771,7 +1771,7 @@ SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp,
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
 
-COMPAT_SYSCALL_DEFINE2(nanosleep, struct old_timespec32 __user *, rqtp,
+SYSCALL_DEFINE2(nanosleep_time32, struct old_timespec32 __user *, rqtp,
                        struct old_timespec32 __user *, rmtp)
 {
         struct timespec64 tu;
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index a51895486e5e..67df65f887ac 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -45,6 +45,7 @@ SYS_NI(timer_delete);
 SYS_NI(clock_adjtime);
 SYS_NI(getitimer);
 SYS_NI(setitimer);
+SYS_NI(clock_adjtime32);
 #ifdef __ARCH_WANT_SYS_ALARM
 SYS_NI(alarm);
 #endif
@@ -150,16 +151,16 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
 
 #ifdef CONFIG_COMPAT
 COMPAT_SYS_NI(timer_create);
-COMPAT_SYS_NI(clock_adjtime);
-COMPAT_SYS_NI(timer_settime);
-COMPAT_SYS_NI(timer_gettime);
 COMPAT_SYS_NI(getitimer);
 COMPAT_SYS_NI(setitimer);
 #endif
 
 #ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
-                       struct old_timespec32 __user *, tp)
+SYS_NI(timer_settime32);
+SYS_NI(timer_gettime32);
+
+SYSCALL_DEFINE2(clock_settime32, const clockid_t, which_clock,
+                struct old_timespec32 __user *, tp)
 {
         struct timespec64 new_tp;
 
@@ -171,8 +172,8 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
         return do_sys_settimeofday64(&new_tp, NULL);
 }
 
-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)
 {
         int ret;
         struct timespec64 kernel_tp;
@@ -186,8 +187,8 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
         return 0;
 }
 
-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)
 {
         struct timespec64 rtn_tp = {
                 .tv_sec = 0,
@@ -206,9 +207,9 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
         }
 }
 
-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)
 {
         struct timespec64 t;
 
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index de79f85ae14f..29176635991f 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -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;
@@ -1096,8 +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;
@@ -1111,8 +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;
@@ -1129,8 +1129,8 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
         return err;
 }
 
-COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
-                       struct old_timex32 __user *, utp)
+SYSCALL_DEFINE2(clock_adjtime32, clockid_t, which_clock,
+                struct old_timex32 __user *, utp)
 {
         struct __kernel_timex ktx;
         int err;
@@ -1147,8 +1147,8 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
         return err;
 }
 
-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;
@@ -1204,9 +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;
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 78b5c8f1495a..6261f969dcb7 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -98,11 +98,11 @@ SYSCALL_DEFINE1(stime, time_t __user *, tptr)
 
 #endif /* __ARCH_WANT_SYS_TIME */
 
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_COMPAT_32BIT_TIME
 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
 
 /* old_time32_t is a 32 bit "long" and needs to get converted. */
-COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc)
+SYSCALL_DEFINE1(time32, old_time32_t __user *, tloc)
 {
         old_time32_t i;
 
@@ -116,7 +116,7 @@ COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc)
         return i;
 }
 
-COMPAT_SYSCALL_DEFINE1(stime, old_time32_t __user *, tptr)
+SYSCALL_DEFINE1(stime32, old_time32_t __user *, tptr)
 {
         struct timespec64 tv;
         int err;
@@ -344,7 +344,7 @@ int put_old_timex32(struct old_timex32 __user *utp, const struct __kernel_timex
         return 0;
 }
 
-COMPAT_SYSCALL_DEFINE1(adjtimex, struct old_timex32 __user *, utp)
+SYSCALL_DEFINE1(adjtimex_time32, struct old_timex32 __user *, utp)
 {
         struct __kernel_timex txc;
         int err, ret;