time: make adjtime compat handling available for 32 bit

We want to reuse the compat_timex handling on 32-bit architectures the
same way we are using the compat handling for timespec when moving to
64-bit time_t.

Move all definitions related to compat_timex out of the compat code
into the normal timekeeping code, along with a rename to old_timex32,
corresponding to the timespec/timeval structures, and make it controlled
by CONFIG_COMPAT_32BIT_TIME, which 32-bit architectures will then select.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 64 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index f01affa17e22..d8a36c6ad7c9 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -20,7 +20,6 @@
 #include <linux/syscalls.h>
 #include <linux/unistd.h>
 #include <linux/security.h>
-#include <linux/timex.h>
 #include <linux/export.h>
 #include <linux/migrate.h>
 #include <linux/posix-timers.h>
@@ -30,69 +29,6 @@
 
 #include <linux/uaccess.h>
 
-int compat_get_timex(struct timex *txc, const struct compat_timex __user *utp)
-{
-	struct compat_timex tx32;
-
-	memset(txc, 0, sizeof(struct timex));
-	if (copy_from_user(&tx32, utp, sizeof(struct compat_timex)))
-		return -EFAULT;
-
-	txc->modes = tx32.modes;
-	txc->offset = tx32.offset;
-	txc->freq = tx32.freq;
-	txc->maxerror = tx32.maxerror;
-	txc->esterror = tx32.esterror;
-	txc->status = tx32.status;
-	txc->constant = tx32.constant;
-	txc->precision = tx32.precision;
-	txc->tolerance = tx32.tolerance;
-	txc->time.tv_sec = tx32.time.tv_sec;
-	txc->time.tv_usec = tx32.time.tv_usec;
-	txc->tick = tx32.tick;
-	txc->ppsfreq = tx32.ppsfreq;
-	txc->jitter = tx32.jitter;
-	txc->shift = tx32.shift;
-	txc->stabil = tx32.stabil;
-	txc->jitcnt = tx32.jitcnt;
-	txc->calcnt = tx32.calcnt;
-	txc->errcnt = tx32.errcnt;
-	txc->stbcnt = tx32.stbcnt;
-
-	return 0;
-}
-
-int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc)
-{
-	struct compat_timex tx32;
-
-	memset(&tx32, 0, sizeof(struct compat_timex));
-	tx32.modes = txc->modes;
-	tx32.offset = txc->offset;
-	tx32.freq = txc->freq;
-	tx32.maxerror = txc->maxerror;
-	tx32.esterror = txc->esterror;
-	tx32.status = txc->status;
-	tx32.constant = txc->constant;
-	tx32.precision = txc->precision;
-	tx32.tolerance = txc->tolerance;
-	tx32.time.tv_sec = txc->time.tv_sec;
-	tx32.time.tv_usec = txc->time.tv_usec;
-	tx32.tick = txc->tick;
-	tx32.ppsfreq = txc->ppsfreq;
-	tx32.jitter = txc->jitter;
-	tx32.shift = txc->shift;
-	tx32.stabil = txc->stabil;
-	tx32.jitcnt = txc->jitcnt;
-	tx32.calcnt = txc->calcnt;
-	tx32.errcnt = txc->errcnt;
-	tx32.stbcnt = txc->stbcnt;
-	tx32.tai = txc->tai;
-	if (copy_to_user(utp, &tx32, sizeof(struct compat_timex)))
-		return -EFAULT;
-	return 0;
-}
-
 static int __compat_get_timeval(struct timeval *tv, const struct old_timeval32 __user *ctv)
 {
 	return (!access_ok(ctv, sizeof(*ctv)) ||