X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Ftime-util.c;h=e192d5ef58d712302231575fce57808f7176ef5e;hb=9f26c90cb50c45d4549c4dd569917b4ac143b94d;hp=7f477100b3ddebe6640fb65373f088529e1805be;hpb=decad9103eab4c5f24dbc55dc7d2cdabce87a302;p=elogind.git

diff --git a/src/shared/time-util.c b/src/shared/time-util.c
index 7f477100b..e192d5ef5 100644
--- a/src/shared/time-util.c
+++ b/src/shared/time-util.c
@@ -46,6 +46,11 @@ dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
         int64_t delta;
         assert(ts);
 
+        if (u == (usec_t) -1) {
+                ts->realtime = ts->monotonic = (usec_t) -1;
+                return ts;
+        }
+
         ts->realtime = u;
 
         if (u == 0)
@@ -64,6 +69,27 @@ dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
         return ts;
 }
 
+dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) {
+        int64_t delta;
+        assert(ts);
+
+        if (u == (usec_t) -1) {
+                ts->realtime = ts->monotonic = (usec_t) -1;
+                return ts;
+        }
+
+        ts->monotonic = u;
+        delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u;
+
+        ts->realtime = now(CLOCK_REALTIME);
+        if ((int64_t) ts->realtime > delta)
+                ts->realtime -= delta;
+        else
+                ts->realtime = 0;
+
+        return ts;
+}
+
 usec_t timespec_load(const struct timespec *ts) {
         assert(ts);
 
@@ -204,6 +230,8 @@ char *format_timespan(char *buf, size_t l, usec_t t) {
                 const char *suffix;
                 usec_t usec;
         } table[] = {
+                { "y", USEC_PER_YEAR },
+                { "month", USEC_PER_MONTH },
                 { "w", USEC_PER_WEEK },
                 { "d", USEC_PER_DAY },
                 { "h", USEC_PER_HOUR },
@@ -284,11 +312,32 @@ void dual_timestamp_deserialize(const char *value, dual_timestamp *t) {
 }
 
 int parse_timestamp(const char *t, usec_t *usec) {
+        static const struct {
+                const char *name;
+                const int nr;
+        } day_nr[] = {
+                { "Sunday",    0 },
+                { "Sun",       0 },
+                { "Monday",    1 },
+                { "Mon",       1 },
+                { "Tuesday",   2 },
+                { "Tue",       2 },
+                { "Wednesday", 3 },
+                { "Wed",       3 },
+                { "Thursday",  4 },
+                { "Thu",       4 },
+                { "Friday",    5 },
+                { "Fri",       5 },
+                { "Saturday",  6 },
+                { "Sat",       6 },
+        };
+
         const char *k;
         struct tm tm, copy;
         time_t x;
         usec_t plus = 0, minus = 0, ret;
-        int r;
+        int r, weekday = -1;
+        unsigned i;
 
         /*
          * Allowed syntaxes:
@@ -312,6 +361,7 @@ int parse_timestamp(const char *t, usec_t *usec) {
 
         x = time(NULL);
         assert_se(localtime_r(&x, &tm));
+        tm.tm_isdst = -1;
 
         if (streq(t, "now"))
                 goto finish;
@@ -359,6 +409,21 @@ int parse_timestamp(const char *t, usec_t *usec) {
                 goto finish;
         }
 
+        for (i = 0; i < ELEMENTSOF(day_nr); i++) {
+                size_t skip;
+
+                if (!startswith_no_case(t, day_nr[i].name))
+                        continue;
+
+                skip = strlen(day_nr[i].name);
+                if (t[skip] != ' ')
+                        continue;
+
+                weekday = day_nr[i].nr;
+                t += skip + 1;
+                break;
+        }
+
         copy = tm;
         k = strptime(t, "%y-%m-%d %H:%M:%S", &tm);
         if (k && *k == 0)
@@ -416,6 +481,9 @@ finish:
         if (x == (time_t) -1)
                 return -EINVAL;
 
+        if (weekday >= 0 && tm.tm_wday != weekday)
+                return -EINVAL;
+
         ret = (usec_t) x * USEC_PER_SEC;
 
         ret += plus;