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-rw-r--r--libc/misc/time/mktime.c41
1 files changed, 39 insertions, 2 deletions
diff --git a/libc/misc/time/mktime.c b/libc/misc/time/mktime.c
index d6ee2ed42..c767fb402 100644
--- a/libc/misc/time/mktime.c
+++ b/libc/misc/time/mktime.c
@@ -108,9 +108,46 @@ const struct tm *tp;
}
-static time_t localtime_offset;
+/* This structure contains all the information about a
+ timezone given in the POSIX standard TZ envariable. */
+typedef struct
+ {
+ const char *name;
+
+ /* When to change. */
+ enum { J0, J1, M } type; /* Interpretation of: */
+ unsigned short int m, n, d; /* Month, week, day. */
+ unsigned int secs; /* Time of day. */
+
+ long int offset; /* Seconds east of GMT (west if < 0). */
+
+ /* We cache the computed time of change for a
+ given year so we don't have to recompute it. */
+ time_t change; /* When to change to this zone. */
+ int computed_for; /* Year above is computed for. */
+ } tz_rule;
+
+/* tz_rules[0] is standard, tz_rules[1] is daylight. */
+static tz_rule tz_rules[2];
+
+/* Warning -- this function is a stub andd always does UTC
+ * no matter what it is given */
+void tzset (void)
+{
+ tz_rules[0].name = tz_rules[1].name = "UTC";
+ tz_rules[0].type = tz_rules[1].type = J0;
+ tz_rules[0].m = tz_rules[0].n = tz_rules[0].d = 0;
+ tz_rules[1].m = tz_rules[1].n = tz_rules[1].d = 0;
+ tz_rules[0].secs = tz_rules[1].secs = 0;
+ tz_rules[0].offset = tz_rules[1].offset = 0L;
+ tz_rules[0].change = tz_rules[1].change = (time_t) -1;
+ tz_rules[0].computed_for = tz_rules[1].computed_for = 0;
+}
+
+static time_t localtime_offset;
+
/* Convert *TP to a time_t value. */
time_t mktime(tp)
struct tm *tp;
@@ -119,7 +156,7 @@ struct tm *tp;
/* POSIX.1 8.1.1 requires that whenever mktime() is called, the
time zone names contained in the external variable `tzname' shall
be set as if the tzset() function had been called. */
- __tzset();
+ tzset();
#endif
return __mktime_internal(tp, localtime_r, &localtime_offset);