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| author |   Lukasz Majewski <lukma@denx.de> | 2020-01-15 10:14:23 +0100 |
|---|---|---|
| committer | Lukasz Majewski <lukma@denx.de> | 2020-02-05 00:10:16 +0100 |
| commit | f1c314d27552eb6ce5db23b98b293696925741d5 (patch) | |
| tree | a27ab3a25e978690b8c154b8dd84eb2315ca7b06 /include | |
| parent | Use binutils 2.34 branch in build-many-glibcs.py. (diff) | |
| download | glibc-f1c314d27552eb6ce5db23b98b293696925741d5.tar.gz glibc-f1c314d27552eb6ce5db23b98b293696925741d5.tar.bz2 glibc-f1c314d27552eb6ce5db23b98b293696925741d5.zip | |
y2038: linux: Provide __timespec_get64 implementation
This patch provides new instance of Linux specific timespec_get.c file placed
in ./sysdeps/unix/sysv/linux/.
When compared to this file version from ./time directory, it provides
__timespec_get64 explicit 64 bit function for getting 64 bit time in the
struct __timespec64 (for compilation using C11 standard).
Moreover, a 32 bit version - __timespec_get internally uses
__timespec_get64.
The __timespec_get is now supposed to be used on systems still supporting 32
bit time (__TIMESIZE != 64) - hence the necessary conversion to 32 bit struct
timespec.
Internally the timespec_get uses __clock_gettime64. This patch is necessary
for having architectures with __WORDSIZE == 32 Y2038 safe.
Build tests:
./src/scripts/build-many-glibcs.py glibcs
Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
https://github.com/lmajewski/meta-y2038 and run tests:
https://github.com/lmajewski/y2038-tests/commits/master
Above tests were performed with Y2038 redirection applied as well as without
to test proper usage of both __timespec_get64 and __timespec_get.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/time.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/time.h b/include/time.h index f712a0e167..97d17c171a 100644 --- a/include/time.h +++ b/include/time.h @@ -254,6 +254,7 @@ extern double __difftime (time_t time1, time_t time0); #if __TIMESIZE == 64 # define __clock_nanosleep_time64 __clock_nanosleep # define __clock_gettime64 __clock_gettime +# define __timespec_get64 __timespec_get #else extern int __clock_nanosleep_time64 (clockid_t clock_id, int flags, const struct __timespec64 *req, @@ -261,6 +262,8 @@ extern int __clock_nanosleep_time64 (clockid_t clock_id, libc_hidden_proto (__clock_nanosleep_time64) extern int __clock_gettime64 (clockid_t clock_id, struct __timespec64 *tp); libc_hidden_proto (__clock_gettime64) +extern int __timespec_get64 (struct __timespec64 *ts, int base); +libc_hidden_proto (__timespec_get64) #endif /* Use in the clock_* functions. Size of the field representing the |