+int sd_journal_seek_cursor(sd_journal *j, const char *cursor) {
+ char *w;
+ size_t l;
+ char *state;
+ unsigned long long seqnum, monotonic, realtime, xor_hash;
+ bool
+ seqnum_id_set = false,
+ seqnum_set = false,
+ boot_id_set = false,
+ monotonic_set = false,
+ realtime_set = false,
+ xor_hash_set = false;
+ sd_id128_t seqnum_id, boot_id;
+
+ assert(j);
+ assert(cursor);
+
+ FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) {
+ char *item;
+ int k = 0;
+
+ if (l < 2 || w[1] != '=')
+ return -EINVAL;
+
+ item = strndup(w, l);
+ if (!item)
+ return -ENOMEM;
+
+ switch (w[0]) {
+
+ case 's':
+ seqnum_id_set = true;
+ k = sd_id128_from_string(w+2, &seqnum_id);
+ break;
+
+ case 'i':
+ seqnum_set = true;
+ if (sscanf(w+2, "%llx", &seqnum) != 1)
+ k = -EINVAL;
+ break;
+
+ case 'b':
+ boot_id_set = true;
+ k = sd_id128_from_string(w+2, &boot_id);
+ break;
+
+ case 'm':
+ monotonic_set = true;
+ if (sscanf(w+2, "%llx", &monotonic) != 1)
+ k = -EINVAL;
+ break;
+
+ case 't':
+ realtime_set = true;
+ if (sscanf(w+2, "%llx", &realtime) != 1)
+ k = -EINVAL;
+ break;
+
+ case 'x':
+ xor_hash_set = true;
+ if (sscanf(w+2, "%llx", &xor_hash) != 1)
+ k = -EINVAL;
+ break;
+ }
+
+ free(item);
+
+ if (k < 0)
+ return k;
+ }
+
+ if ((!seqnum_set || !seqnum_id_set) &&
+ (!monotonic_set || !boot_id_set) &&
+ !realtime_set)
+ return -EINVAL;
+
+ reset_location(j);
+
+ j->current_location.type = LOCATION_DISCRETE;
+
+ if (realtime_set) {
+ j->current_location.realtime = (uint64_t) realtime;
+ j->current_location.realtime_set = true;
+ }
+
+ if (seqnum_set && seqnum_id_set) {
+ j->current_location.seqnum = (uint64_t) seqnum;
+ j->current_location.seqnum_id = seqnum_id;
+ j->current_location.seqnum_set = true;
+ }
+
+ if (monotonic_set && boot_id_set) {
+ j->current_location.monotonic = (uint64_t) monotonic;
+ j->current_location.boot_id = boot_id;
+ j->current_location.monotonic_set = true;
+ }
+
+ if (xor_hash_set) {
+ j->current_location.xor_hash = (uint64_t) xor_hash;
+ j->current_location.xor_hash_set = true;
+ }
+
+ return 0;
+}
+
+int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) {
+ assert(j);
+
+ reset_location(j);
+ j->current_location.type = LOCATION_DISCRETE;
+ j->current_location.boot_id = boot_id;
+ j->current_location.monotonic = usec;
+ j->current_location.monotonic_set = true;
+
+ return 0;
+}
+
+int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) {
+ assert(j);
+
+ reset_location(j);
+ j->current_location.type = LOCATION_DISCRETE;
+ j->current_location.realtime = usec;
+ j->current_location.realtime_set = true;
+
+ return 0;
+}
+
+int sd_journal_seek_head(sd_journal *j) {
+ assert(j);
+
+ reset_location(j);
+ j->current_location.type = LOCATION_HEAD;
+
+ return 0;
+}
+
+int sd_journal_seek_tail(sd_journal *j) {
+ assert(j);
+
+ reset_location(j);
+ j->current_location.type = LOCATION_TAIL;
+
+ return 0;