TOMOYO: Rename meminfo to stat and show more statistics.

[platform/adaptation/renesas_rcar/renesas_kernel.git] / security / tomoyo / util.c

diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index daf7a45..7ff54c9 100644 (file)
--- 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.