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| author | Arnd Bergmann <arnd@arndb.de> | 2018-08-21 22:33:00 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-08-22 15:11:35 +0200 |
| commit | fd991a23c8f6ef30692f77409602ccf3614353b2 (patch) | |
| tree | 212ebd0eeb1ce42e71f1d6d592dc3d35a9ce53a9 /include | |
| parent | f19f5c49bbc3ffcc9126cc245fc1b24cc29f4a37 (diff) | |
| download | linux-fd991a23c8f6ef30692f77409602ccf3614353b2.tar.gz linux-fd991a23c8f6ef30692f77409602ccf3614353b2.tar.bz2 linux-fd991a23c8f6ef30692f77409602ccf3614353b2.zip | |
y2038: Provide aliases for compat helpers
As part of the system call rework for 64-bit time_t, we are restructuring
the way that compat syscalls deal with 32-bit time_t, reusing the
implementation for 32-bit architectures. Christoph Hellwig suggested a
rename of the associated types and interfaces to avoid the confusing usage
of the 'compat' prefix for 32-bit architectures.
To prepare for doing that in linux-4.20, add a set of macros that allows to
convert subsystems separately to the new names and avoids some of the
nastier merge conflicts.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: y2038@lists.linaro.org
Cc: John Stultz <john.stultz@linaro.org>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Link: https://lkml.kernel.org/r/20180821203329.2089473-1-arnd@arndb.de
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/time32.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/time32.h b/include/linux/time32.h index 0b14f936100a..d1ae43c13e25 100644 --- a/include/linux/time32.h +++ b/include/linux/time32.h @@ -207,4 +207,19 @@ static inline s64 timeval_to_ns(const struct timeval *tv) extern struct timeval ns_to_timeval(const s64 nsec); extern struct __kernel_old_timeval ns_to_kernel_old_timeval(s64 nsec); +/* + * New aliases for compat time functions. These will be used to replace + * the compat code so it can be shared between 32-bit and 64-bit builds + * both of which provide compatibility with old 32-bit tasks. + */ +#define old_time32_t compat_time_t +#define old_timeval32 compat_timeval +#define old_timespec32 compat_timespec +#define old_itimerspec32 compat_itimerspec +#define ns_to_old_timeval32 ns_to_compat_timeval +#define get_old_itimerspec32 get_compat_itimerspec64 +#define put_old_itimerspec32 put_compat_itimerspec64 +#define get_old_timespec32 compat_get_timespec64 +#define put_old_timespec32 compat_put_timespec64 + #endif |