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y2038: Introduce struct __timeval64 - new internal glibc type

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This type is a glibc's "internal" type similar to struct timeval but
whose tv_sec field is a __time64_t rather than a time_t, which makes it
Y2038-proof. This struct is NOT supposed to be passed to the kernel -
instead it shall be converted to struct __timespec64 and clock_[sg]ettime
syscalls shall be used (which are now Y2038 safe).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Lukasz Majewski 2020-01-16 23:40:51 +01:00
parent 3fced064f2
commit 504c987170
1 changed files with 14 additions and 0 deletions
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14
include/time.h
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@ -93,6 +93,20 @@ struct __itimerspec64
};
#endif
#if __TIMESIZE == 64
# define __timeval64 timeval
#else
/* The glibc Y2038-proof struct __timeval64 structure for a time value.
This structure is NOT supposed to be passed to the Linux kernel.
Instead, it shall be converted to struct __timespec64 and time shall
be [sg]et via clock_[sg]ettime (which are now Y2038 safe). */
struct __timeval64
{
__time64_t tv_sec; /* Seconds */
__suseconds64_t tv_usec; /* Microseconds */
};
#endif
#if __TIMESIZE == 64
# define __ctime64 ctime
#else