diff options
Diffstat (limited to 'security/tomoyo/util.c')
| -rw-r--r-- | security/tomoyo/util.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c index daf7a45f70f1..7ff54c95e1f2 100644 --- a/security/tomoyo/util.c +++ b/security/tomoyo/util.c @@ -47,6 +47,47 @@ const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX] = { }; /** + * tomoyo_convert_time - Convert time_t to YYYY/MM/DD hh/mm/ss. + * + * @time: Seconds since 1970/01/01 00:00:00. + * @stamp: Pointer to "struct tomoyo_time". + * + * Returns nothing. + * + * This function does not handle Y2038 problem. + */ +void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp) +{ + static const u16 tomoyo_eom[2][12] = { + { 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, + { 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } + }; + u16 y; + u8 m; + bool r; + stamp->sec = time % 60; + time /= 60; + stamp->min = time % 60; + time /= 60; + stamp->hour = time % 24; + time /= 24; + for (y = 1970; ; y++) { + const unsigned short days = (y & 3) ? 365 : 366; + if (time < days) + break; + time -= days; + } + r = (y & 3) == 0; + for (m = 0; m < 11 && time >= tomoyo_eom[r][m]; m++) + ; + if (m) + time -= tomoyo_eom[r][m - 1]; + stamp->year = y; + stamp->month = ++m; + stamp->day = ++time; +} + +/** * tomoyo_permstr - Find permission keywords. * * @string: String representation for permissions in foo/bar/buz format. |