diff options
| -rw-r--r-- | include/time.h | 7 | ||||
| -rw-r--r-- | lib/libc/stdtime/Makefile.inc | 3 | ||||
| -rw-r--r-- | lib/libc/stdtime/time32.c | 60 |
3 files changed, 69 insertions, 1 deletions
diff --git a/include/time.h b/include/time.h index 1e38cb2..6cff713 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 */ diff --git a/lib/libc/stdtime/Makefile.inc b/lib/libc/stdtime/Makefile.inc index 36f909f..f9abc71 100644 --- a/lib/libc/stdtime/Makefile.inc +++ b/lib/libc/stdtime/Makefile.inc @@ -3,7 +3,8 @@ .PATH: ${.CURDIR}/../libc/stdtime ${.CURDIR}/../locale -SRCS+= asctime.c difftime.c localtime.c strftime.c strptime.c timelocal.c +SRCS+= asctime.c difftime.c localtime.c strftime.c strptime.c timelocal.c \ + time32.c .if ${LIB} == "c" MAN+= ctime.3 strftime.3 strptime.3 time2posix.3 diff --git a/lib/libc/stdtime/time32.c b/lib/libc/stdtime/time32.c new file mode 100644 index 0000000..4886f7c --- /dev/null +++ b/lib/libc/stdtime/time32.c @@ -0,0 +1,60 @@ +/*- + * Copyright (c) 2001 FreeBSD Inc. + * All rights reserved. + * + * These routines are for converting time_t to fixed-bit representations + * for use in protocols or storage. When converting time to a larger + * representation of time_t these routines are expected to assume temporal + * locality and use the 50-year rule to properly set the msb bits. XXX + * + * Redistribution and use under the terms of the COPYRIGHT file at the + * base of the source tree. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/time.h> + +/* + * Convert a 32 bit representation of time_t into time_t. XXX needs to + * implement the 50-year rule to handle post-2038 conversions. + */ +time_t +time32_to_time(__int32_t t32) +{ + return((time_t)t32); +} + +/* + * Convert time_t to a 32 bit representation. If time_t is 64 bits we can + * simply chop it down. The resulting 32 bit representation can be + * converted back to a temporally local 64 bit time_t using time32_to_time. + */ +__int32_t +time_to_time32(time_t t) +{ + return((__int32_t)t); +} + +/* + * Convert a 64 bit representation of time_t into time_t. If time_t is + * represented as 32 bits we can simply chop it and not support times + * past 2038. + */ +time_t +time64_to_time(__int64_t t64) +{ + return((time_t)t64); +} + +/* + * Convert time_t to a 64 bit representation. If time_t is represented + * as 32 bits we simply sign-extend and do not support times past 2038. + */ +__int64_t +time_to_time64(time_t t) +{ + return((__int64_t)t); +} + |
