Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground

Pull y2038 cleanups from Arnd Bergmann:
 "y2038 syscall implementation cleanups

  This is a series of cleanups for the y2038 work, mostly intended for
  namespace cleaning: the kernel defines the traditional time_t, timeval
  and timespec types that often lead to y2038-unsafe code. Even though
  the unsafe usage is mostly gone from the kernel, having the types and
  associated functions around means that we can still grow new users,
  and that we may be missing conversions to safe types that actually
  matter.

  There are still a number of driver specific patches needed to get the
  last users of these types removed, those have been submitted to the
  respective maintainers"

Link: https://lore.kernel.org/lkml/20191108210236.1296047-1-arnd@arndb.de/

* tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (26 commits)
  y2038: alarm: fix half-second cut-off
  y2038: ipc: fix x32 ABI breakage
  y2038: fix typo in powerpc vdso "LOPART"
  y2038: allow disabling time32 system calls
  y2038: itimer: change implementation to timespec64
  y2038: move itimer reset into itimer.c
  y2038: use compat_{get,set}_itimer on alpha
  y2038: itimer: compat handling to itimer.c
  y2038: time: avoid timespec usage in settimeofday()
  y2038: timerfd: Use timespec64 internally
  y2038: elfcore: Use __kernel_old_timeval for process times
  y2038: make ns_to_compat_timeval use __kernel_old_timeval
  y2038: socket: use __kernel_old_timespec instead of timespec
  y2038: socket: remove timespec reference in timestamping
  y2038: syscalls: change remaining timeval to __kernel_old_timeval
  y2038: rusage: use __kernel_old_timeval
  y2038: uapi: change __kernel_time_t to __kernel_old_time_t
  y2038: stat: avoid 'time_t' in 'struct stat'
  y2038: ipc: remove __kernel_time_t reference from headers
  y2038: vdso: powerpc: avoid timespec references
  ...

5 files changed, 38 insertions, 38 deletions

diff --git a/arch/sparc/include/uapi/asm/msgbuf.h b/arch/sparc/include/uapi/asm/msgbuf.h
index ffc46c211d6d..eeeb91933280 100644
--- a/arch/sparc/include/uapi/asm/msgbuf.h
+++ b/arch/sparc/include/uapi/asm/msgbuf.h
@@ -13,9 +13,9 @@
 struct msqid64_ds {
 	struct ipc64_perm msg_perm;
 #if defined(__sparc__) && defined(__arch64__)
-	__kernel_time_t msg_stime;	/* last msgsnd time */
-	__kernel_time_t msg_rtime;	/* last msgrcv time */
-	__kernel_time_t msg_ctime;	/* last change time */
+	long msg_stime;			/* last msgsnd time */
+	long msg_rtime;			/* last msgrcv time */
+	long msg_ctime;			/* last change time */
 #else
 	unsigned long msg_stime_high;
 	unsigned long msg_stime;	/* last msgsnd time */
diff --git a/arch/sparc/include/uapi/asm/sembuf.h b/arch/sparc/include/uapi/asm/sembuf.h
index f3d309c2e1cd..cbcbaa4e7128 100644
--- a/arch/sparc/include/uapi/asm/sembuf.h
+++ b/arch/sparc/include/uapi/asm/sembuf.h
@@ -14,8 +14,8 @@
 struct semid64_ds {
 	struct ipc64_perm sem_perm;		/* permissions .. see ipc.h */
 #if defined(__sparc__) && defined(__arch64__)
-	__kernel_time_t	sem_otime;		/* last semop time */
-	__kernel_time_t	sem_ctime;		/* last change time */
+	long		sem_otime;		/* last semop time */
+	long		sem_ctime;		/* last change time */
 #else
 	unsigned long	sem_otime_high;
 	unsigned long	sem_otime;		/* last semop time */
diff --git a/arch/sparc/include/uapi/asm/shmbuf.h b/arch/sparc/include/uapi/asm/shmbuf.h
index 06618b84822d..a5d7d8d681c4 100644
--- a/arch/sparc/include/uapi/asm/shmbuf.h
+++ b/arch/sparc/include/uapi/asm/shmbuf.h
@@ -14,9 +14,9 @@
 struct shmid64_ds {
 	struct ipc64_perm	shm_perm;	/* operation perms */
 #if defined(__sparc__) && defined(__arch64__)
-	__kernel_time_t		shm_atime;	/* last attach time */
-	__kernel_time_t		shm_dtime;	/* last detach time */
-	__kernel_time_t		shm_ctime;	/* last change time */
+	long			shm_atime;	/* last attach time */
+	long			shm_dtime;	/* last detach time */
+	long			shm_ctime;	/* last change time */
 #else
 	unsigned long		shm_atime_high;
 	unsigned long		shm_atime;	/* last attach time */
diff --git a/arch/sparc/include/uapi/asm/stat.h b/arch/sparc/include/uapi/asm/stat.h
index b6ec4eb217f7..732c41720e24 100644
--- a/arch/sparc/include/uapi/asm/stat.h
+++ b/arch/sparc/include/uapi/asm/stat.h
@@ -14,12 +14,12 @@ struct stat {
 	uid_t   st_uid;
 	gid_t   st_gid;
 	unsigned int st_rdev;
-	off_t   st_size;
-	time_t  st_atime;
-	time_t  st_mtime;
-	time_t  st_ctime;
-	off_t   st_blksize;
-	off_t   st_blocks;
+	long    st_size;
+	long    st_atime;
+	long    st_mtime;
+	long    st_ctime;
+	long    st_blksize;
+	long    st_blocks;
 	unsigned long  __unused4[2];
 };
 
@@ -57,15 +57,15 @@ struct stat {
 	unsigned short	st_uid;
 	unsigned short	st_gid;
 	unsigned short	st_rdev;
-	off_t		st_size;
-	time_t		st_atime;
+	long		st_size;
+	long		st_atime;
 	unsigned long	st_atime_nsec;
-	time_t		st_mtime;
+	long		st_mtime;
 	unsigned long	st_mtime_nsec;
-	time_t		st_ctime;
+	long		st_ctime;
 	unsigned long	st_ctime_nsec;
-	off_t		st_blksize;
-	off_t		st_blocks;
+	long		st_blksize;
+	long		st_blocks;
 	unsigned long	__unused4[2];
 };
 
diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c
index fc5bdd14de76..e794edde6755 100644
--- a/arch/sparc/vdso/vclock_gettime.c
+++ b/arch/sparc/vdso/vclock_gettime.c
@@ -63,7 +63,7 @@ notrace static __always_inline struct vvar_data *get_vvar_data(void)
 	return (struct vvar_data *) ret;
 }
 
-notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+notrace static long vdso_fallback_gettime(long clock, struct __kernel_old_timespec *ts)
 {
 	register long num __asm__("g1") = __NR_clock_gettime;
 	register long o0 __asm__("o0") = clock;
@@ -74,7 +74,7 @@ notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
 	return o0;
 }
 
-notrace static long vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz)
+notrace static long vdso_fallback_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 {
 	register long num __asm__("g1") = __NR_gettimeofday;
 	register long o0 __asm__("o0") = (long) tv;
@@ -144,7 +144,7 @@ notrace static __always_inline u64 vgetsns_stick(struct vvar_data *vvar)
 }
 
 notrace static __always_inline int do_realtime(struct vvar_data *vvar,
-					       struct timespec *ts)
+					       struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 	u64 ns;
@@ -164,7 +164,7 @@ notrace static __always_inline int do_realtime(struct vvar_data *vvar,
 }
 
 notrace static __always_inline int do_realtime_stick(struct vvar_data *vvar,
-						     struct timespec *ts)
+						     struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 	u64 ns;
@@ -184,7 +184,7 @@ notrace static __always_inline int do_realtime_stick(struct vvar_data *vvar,
 }
 
 notrace static __always_inline int do_monotonic(struct vvar_data *vvar,
-						struct timespec *ts)
+						struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 	u64 ns;
@@ -204,7 +204,7 @@ notrace static __always_inline int do_monotonic(struct vvar_data *vvar,
 }
 
 notrace static __always_inline int do_monotonic_stick(struct vvar_data *vvar,
-						      struct timespec *ts)
+						      struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 	u64 ns;
@@ -224,7 +224,7 @@ notrace static __always_inline int do_monotonic_stick(struct vvar_data *vvar,
 }
 
 notrace static int do_realtime_coarse(struct vvar_data *vvar,
-				      struct timespec *ts)
+				      struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 
@@ -237,7 +237,7 @@ notrace static int do_realtime_coarse(struct vvar_data *vvar,
 }
 
 notrace static int do_monotonic_coarse(struct vvar_data *vvar,
-				       struct timespec *ts)
+				       struct __kernel_old_timespec *ts)
 {
 	unsigned long seq;
 
@@ -251,7 +251,7 @@ notrace static int do_monotonic_coarse(struct vvar_data *vvar,
 }
 
 notrace int
-__vdso_clock_gettime(clockid_t clock, struct timespec *ts)
+__vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
 {
 	struct vvar_data *vvd = get_vvar_data();
 
@@ -275,11 +275,11 @@ __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
 	return vdso_fallback_gettime(clock, ts);
 }
 int
-clock_gettime(clockid_t, struct timespec *)
+clock_gettime(clockid_t, struct __kernel_old_timespec *)
 	__attribute__((weak, alias("__vdso_clock_gettime")));
 
 notrace int
-__vdso_clock_gettime_stick(clockid_t clock, struct timespec *ts)
+__vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
 {
 	struct vvar_data *vvd = get_vvar_data();
 
@@ -304,15 +304,15 @@ __vdso_clock_gettime_stick(clockid_t clock, struct timespec *ts)
 }
 
 notrace int
-__vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
+__vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 {
 	struct vvar_data *vvd = get_vvar_data();
 
 	if (likely(vvd->vclock_mode != VCLOCK_NONE)) {
 		if (likely(tv != NULL)) {
 			union tstv_t {
-				struct timespec ts;
-				struct timeval tv;
+				struct __kernel_old_timespec ts;
+				struct __kernel_old_timeval tv;
 			} *tstv = (union tstv_t *) tv;
 			do_realtime(vvd, &tstv->ts);
 			/*
@@ -336,19 +336,19 @@ __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
 	return vdso_fallback_gettimeofday(tv, tz);
 }
 int
-gettimeofday(struct timeval *, struct timezone *)
+gettimeofday(struct __kernel_old_timeval *, struct timezone *)
 	__attribute__((weak, alias("__vdso_gettimeofday")));
 
 notrace int
-__vdso_gettimeofday_stick(struct timeval *tv, struct timezone *tz)
+__vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
 {
 	struct vvar_data *vvd = get_vvar_data();
 
 	if (likely(vvd->vclock_mode != VCLOCK_NONE)) {
 		if (likely(tv != NULL)) {
 			union tstv_t {
-				struct timespec ts;
-				struct timeval tv;
+				struct __kernel_old_timespec ts;
+				struct __kernel_old_timeval tv;
 			} *tstv = (union tstv_t *) tv;
 			do_realtime_stick(vvd, &tstv->ts);
 			/*