time: Enable get/put_compat_itimerspec64 always

This will aid in enabling the compat syscalls on 32-bit architectures later
on.

Also move compat_itimerspec and related defines to compat_time.h.  The
compat_time.h file will eventually be deleted.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: arnd@arndb.de
Cc: viro@zeniv.linux.org.uk
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: y2038@lists.linaro.org
Link: https://lkml.kernel.org/r/20180617051144.29756-3-deepa.kernel@gmail.com

diff --git a/include/linux/compat.h b/include/linux/compat.h
index b1a5562..18a13f2 100644 (file)
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -109,11 +109,6 @@ typedef    compat_ulong_t          compat_aio_context_t;
 struct compat_sel_arg_struct;
 struct rusage;
 
-struct compat_itimerspec {
-       struct compat_timespec it_interval;
-       struct compat_timespec it_value;
-};
-
 struct compat_utimbuf {
        compat_time_t           actime;
        compat_time_t           modtime;
@@ -294,10 +289,6 @@ extern int compat_get_timespec(struct timespec *, const void __user *);
 extern int compat_put_timespec(const struct timespec *, void __user *);
 extern int compat_get_timeval(struct timeval *, const void __user *);
 extern int compat_put_timeval(const struct timeval *, void __user *);
-extern int get_compat_itimerspec64(struct itimerspec64 *its,
-                       const struct compat_itimerspec __user *uits);
-extern int put_compat_itimerspec64(const struct itimerspec64 *its,
-                       struct compat_itimerspec __user *uits);
 
 struct compat_iovec {
        compat_uptr_t   iov_base;

diff --git a/include/linux/compat_time.h b/include/linux/compat_time.h
index 31f2774..e70bfd1 100644 (file)
--- a/include/linux/compat_time.h
+++ b/include/linux/compat_time.h
@@ -17,7 +17,16 @@ struct compat_timeval {
        s32             tv_usec;
 };
 
+struct compat_itimerspec {
+       struct compat_timespec it_interval;
+       struct compat_timespec it_value;
+};
+
 extern int compat_get_timespec64(struct timespec64 *, const void __user *);
 extern int compat_put_timespec64(const struct timespec64 *, void __user *);
+extern int get_compat_itimerspec64(struct itimerspec64 *its,
+                       const struct compat_itimerspec __user *uits);
+extern int put_compat_itimerspec64(const struct itimerspec64 *its,
+                       struct compat_itimerspec __user *uits);
 
 #endif /* _LINUX_COMPAT_TIME_H */

diff --git a/kernel/compat.c b/kernel/compat.c
index 702aa84..8e40efc 100644 (file)
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -324,35 +324,6 @@ COMPAT_SYSCALL_DEFINE3(sched_getaffinity, compat_pid_t,  pid, unsigned int, len,
        return ret;
 }
 
-/* Todo: Delete these extern declarations when get/put_compat_itimerspec64()
- * are moved to kernel/time/time.c .
- */
-extern int __compat_get_timespec64(struct timespec64 *ts64,
-                                  const struct compat_timespec __user *cts);
-extern int __compat_put_timespec64(const struct timespec64 *ts64,
-                                  struct compat_timespec __user *cts);
-
-int get_compat_itimerspec64(struct itimerspec64 *its,
-                       const struct compat_itimerspec __user *uits)
-{
-
-       if (__compat_get_timespec64(&its->it_interval, &uits->it_interval) ||
-           __compat_get_timespec64(&its->it_value, &uits->it_value))
-               return -EFAULT;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(get_compat_itimerspec64);
-
-int put_compat_itimerspec64(const struct itimerspec64 *its,
-                       struct compat_itimerspec __user *uits)
-{
-       if (__compat_put_timespec64(&its->it_interval, &uits->it_interval) ||
-           __compat_put_timespec64(&its->it_value, &uits->it_value))
-               return -EFAULT;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(put_compat_itimerspec64);
-
 /*
  * We currently only need the following fields from the sigevent
  * structure: sigev_value, sigev_signo, sig_notify and (sometimes

diff --git a/kernel/time/time.c b/kernel/time/time.c
index c019522..72caf05 100644 (file)
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -955,3 +955,24 @@ int put_itimerspec64(const struct itimerspec64 *it,
        return ret;
 }
 EXPORT_SYMBOL_GPL(put_itimerspec64);
+
+int get_compat_itimerspec64(struct itimerspec64 *its,
+                       const struct compat_itimerspec __user *uits)
+{
+
+       if (__compat_get_timespec64(&its->it_interval, &uits->it_interval) ||
+           __compat_get_timespec64(&its->it_value, &uits->it_value))
+               return -EFAULT;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(get_compat_itimerspec64);
+
+int put_compat_itimerspec64(const struct itimerspec64 *its,
+                       struct compat_itimerspec __user *uits)
+{
+       if (__compat_put_timespec64(&its->it_interval, &uits->it_interval) ||
+           __compat_put_timespec64(&its->it_value, &uits->it_value))
+               return -EFAULT;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(put_compat_itimerspec64);