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author | Matthew Dillon <dillon@FreeBSD.org> | 2001-10-28 19:54:49 +0000 |
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committer | Matthew Dillon <dillon@FreeBSD.org> | 2001-10-28 19:54:49 +0000 |
commit | 237c4e3a9e1e8c006edac8167088dfb130597e5c (patch) | |
tree | 4543d34cc7f31cf4431e62f7bbedbaf0179e4947 /include/time.h | |
parent | 7916863d823ee2b8a5d03dea0dd171c9c3d40c7f (diff) | |
download | src-237c4e3a9e1e8c006edac8167088dfb130597e5c.tar.gz src-237c4e3a9e1e8c006edac8167088dfb130597e5c.zip |
Add routines to convert time_t to/from fixed-bit fields. These routines
serve two purposes: (1) so we can maintain backwards compatibility with
protocols (rwhod, dump, etc...) that either assume time_t is 32 bits or
assume sizeof(time_t) == sizeof(int), or make other similar assumptions.
(2) To tag such routines (by the presence of these calls) for future
cleanup/extension work.
The 32->64 routine, time32_to_time() (when time_t is 64 bits, that is),
is defined specifically to implement temporal locality to properly set the
msb bits of a 64 bit time_t quantity, using the 50 year rule. The locality
code has not been implemented yet (and doesn't need to be for a while),
but that is the intent. This will allow us to maintain backwards protocol
compatibility past 2038.
These routines are intended to be platform and time_t agnostic.
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=85634
Diffstat (limited to 'include/time.h')
-rw-r--r-- | include/time.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/time.h b/include/time.h index 1e38cb2da707..6cff71399139 100644 --- a/include/time.h +++ b/include/time.h @@ -136,6 +136,13 @@ size_t strftime __P((char *, size_t, const char *, const struct tm *)); time_t time __P((time_t *)); #ifndef _ANSI_SOURCE +time_t time32_to_time __P((__int32_t t32)); +__int32_t time_to_time32 __P((time_t t)); +time_t time64_to_time __P((__int64_t t64)); +__int64_t time_to_time64 __P((time_t t)); +#endif /* not ANSI */ + +#ifndef _ANSI_SOURCE void tzset __P((void)); #endif /* not ANSI */ |