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| author | Deepa Dinamani <deepa.kernel@gmail.com> | 2017-06-24 11:45:02 -0700 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-25 21:58:46 -0400 |
| commit | f59dd9c886acb3abb188e8e94a99436560976835 (patch) | |
| tree | 710c0991d9c08ef76eb60632ca2730bf59d9172b /include/linux | |
| parent | 938e7cf2d569833a5acf689a8926faf507826253 (diff) | |
| download | linux-f59dd9c886acb3abb188e8e94a99436560976835.tar.gz linux-f59dd9c886acb3abb188e8e94a99436560976835.tar.bz2 linux-f59dd9c886acb3abb188e8e94a99436560976835.zip | |
time: add get_timespec64 and put_timespec64
Add helper functions to convert between struct timespec64 and
struct timespec at userspace boundaries.
This is a preparatory patch to use timespec64 as the basic type
internally in the kernel as timespec is not y2038 safe on 32 bit systems.
The patch helps the cause by containing all data conversions at the
userspace boundaries within these functions.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compat.h | 2 | ||||
| -rw-r--r-- | include/linux/time.h | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h index 425563c7647b..3eb04016ffa9 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -164,6 +164,8 @@ 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 compat_get_timespec64(struct timespec64 *, const void __user *); +extern int compat_put_timespec64(const struct timespec64 *, void __user *); /* * This function convert a timespec if necessary and returns a *user diff --git a/include/linux/time.h b/include/linux/time.h index c0543f5f25de..36afb579495f 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -8,6 +8,11 @@ extern struct timezone sys_tz; +int get_timespec64(struct timespec64 *ts, + const struct timespec __user *uts); +int put_timespec64(const struct timespec64 *ts, + struct timespec __user *uts); + #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) static inline int timespec_equal(const struct timespec *a, |