From ead25417f82ed7f8a21da4dcefc768169f7da884 Mon Sep 17 00:00:00 2001 From: Deepa Dinamani Date: Mon, 2 Jul 2018 22:44:21 -0700 Subject: timex: use __kernel_timex internally 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 Cc: linux-alpha@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Arnd Bergmann --- kernel/time/time.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'kernel/time/time.c') diff --git a/kernel/time/time.c b/kernel/time/time.c index 2d013bc2b271..d179d33f639a 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -265,25 +265,25 @@ COMPAT_SYSCALL_DEFINE2(settimeofday, struct old_timeval32 __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_32BIT_TIME -int get_old_timex32(struct timex *txc, const struct old_timex32 __user *utp) +int get_old_timex32(struct __kernel_timex *txc, const struct old_timex32 __user *utp) { struct old_timex32 tx32; - memset(txc, 0, sizeof(struct timex)); + memset(txc, 0, sizeof(struct __kernel_timex)); if (copy_from_user(&tx32, utp, sizeof(struct old_timex32))) return -EFAULT; @@ -311,7 +311,7 @@ int get_old_timex32(struct timex *txc, const struct old_timex32 __user *utp) return 0; } -int put_old_timex32(struct old_timex32 __user *utp, const struct timex *txc) +int put_old_timex32(struct old_timex32 __user *utp, const struct __kernel_timex *txc) { struct old_timex32 tx32; @@ -344,7 +344,7 @@ int put_old_timex32(struct old_timex32 __user *utp, const struct timex *txc) COMPAT_SYSCALL_DEFINE1(adjtimex, struct old_timex32 __user *, utp) { - struct timex txc; + struct __kernel_timex txc; int err, ret; err = get_old_timex32(&txc, utp); -- cgit