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y2038: Provide conversion helpers for struct __timespec64 

Those functions allow easy conversion between Y2038 safe struct
__timespec64 and other time related data structures (like struct timeval
or struct timespec).

* include/time.h (valid_timeval_to_timespec64): Add.
* include/time.h (valid_timespec_to_timespec64): Likewise.
* include/time.h (valid_timespec64_to_timespec): Likewise.
* include/time.h (valid_timespec64_to_timeval): Likewise.
This commit is contained in:
Lukasz Majewski 2019-03-25 08:38:02 +01:00
parent 71bdf29ac1
commit 9c44c6a908
2 changed files with 56 additions and 0 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2019-10-01 Lukasz Majewski <lukma@denx.de>
* include/time.h (valid_timeval_to_timespec64): Add.
* include/time.h (valid_timespec_to_timespec64): Likewise.
* include/time.h (valid_timespec64_to_timespec): Likewise.
* include/time.h (valid_timespec64_to_timeval): Likewise.
2019-09-30 Joseph Myers <joseph@codesourcery.com> 2019-09-30 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/powerpc/bits/mman.h [__USE_MISC] * sysdeps/unix/sysv/linux/powerpc/bits/mman.h [__USE_MISC]

49
include/time.h
View File

@ -178,5 +178,54 @@ in_time_t_range (__time64_t t)
return s == t; return s == t;
} }
/* Convert a known valid struct timeval into a struct __timespec64. */
static inline struct __timespec64
valid_timeval_to_timespec64 (const struct timeval tv)
{
struct __timespec64 ts64;
ts64.tv_sec = tv.tv_sec;
ts64.tv_nsec = tv.tv_usec * 1000;
return ts64;
}
/* Convert a known valid struct timespec into a struct __timespec64. */
static inline struct __timespec64
valid_timespec_to_timespec64 (const struct timespec ts)
{
struct __timespec64 ts64;
ts64.tv_sec = ts.tv_sec;
ts64.tv_nsec = ts.tv_nsec;
return ts64;
}
/* Convert a valid and within range of struct timespec, struct
__timespec64 into a struct timespec. */
static inline struct timespec
valid_timespec64_to_timespec (const struct __timespec64 ts64)
{
struct timespec ts;
ts.tv_sec = (time_t) ts64.tv_sec;
ts.tv_nsec = ts64.tv_nsec;
return ts;
}
/* Convert a valid and within range of struct timeval struct
__timespec64 into a struct timeval. */
static inline struct timeval
valid_timespec64_to_timeval (const struct __timespec64 ts64)
{
struct timeval tv;
tv.tv_sec = (time_t) ts64.tv_sec;
tv.tv_usec = ts64.tv_nsec / 1000;
return tv;
}
#endif #endif
#endif #endif