static int journal_previous (lua_State *L) {
sd_journal *j = check_journal(L, 1);
int err = sd_journal_previous(j);
if (err < 0) return handle_error(L, -err);
lua_pushboolean(L, err);
return 1;
}
static void test_skip(void (*setup)(void))
{
char t[] = "/tmp/journal-skip-XXXXXX";
sd_journal *j;
int r;
assert_se(mkdtemp(t));
assert_se(chdir(t) >= 0);
setup();
/* Seek to head, iterate down.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_head(j));
assert_ret(sd_journal_next(j));
test_check_numbers_down(j, 4);
sd_journal_close(j);
/* Seek to tail, iterate up.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_tail(j));
assert_ret(sd_journal_previous(j));
test_check_numbers_up(j, 4);
sd_journal_close(j);
/* Seek to tail, skip to head, iterate down.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_tail(j));
assert_ret(r = sd_journal_previous_skip(j, 4));
assert_se(r == 4);
test_check_numbers_down(j, 4);
sd_journal_close(j);
/* Seek to head, skip to tail, iterate up.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_head(j));
assert_ret(r = sd_journal_next_skip(j, 4));
assert_se(r == 4);
test_check_numbers_up(j, 4);
sd_journal_close(j);
log_info("Done...");
if (arg_keep)
log_info("Not removing %s", t);
else {
journal_directory_vacuum(".", 3000000, 0, 0, NULL);
assert_se(rm_rf_dangerous(t, false, true, false) >= 0);
}
puts("------------------------------------------------------------");
}
static void test_check_numbers_up (sd_journal *j, int count) {
for (int i = count; i >= 1; i--) {
int r;
test_check_number(j, i);
assert_ret(r = sd_journal_previous(j));
if (i == 1)
assert_se(r == 0);
else
assert_se(r == 1);
}
}
QStringList UnitModel::getLastJrnlEntries(QString unit) const
{
QString match1, match2;
int r, jflags;
QStringList reply;
const void *data;
size_t length;
uint64_t time;
sd_journal *journal;
if (!userBus.isEmpty())
{
match1 = QString("USER_UNIT=" + unit);
jflags = (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_CURRENT_USER);
}
else
{
match1 = QString("_SYSTEMD_UNIT=" + unit);
match2 = QString("UNIT=" + unit);
jflags = (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM);
}
r = sd_journal_open(&journal, jflags);
if (r != 0)
{
qDebug() << "Failed to open journal";
return reply;
}
sd_journal_flush_matches(journal);
r = sd_journal_add_match(journal, match1.toUtf8(), 0);
if (r != 0)
return reply;
if (!match2.isEmpty())
{
sd_journal_add_disjunction(journal);
r = sd_journal_add_match(journal, match2.toUtf8(), 0);
if (r != 0)
return reply;
}
r = sd_journal_seek_tail(journal);
if (r != 0)
return reply;
// Fetch the last 5 entries
for (int i = 0; i < 5; ++i)
{
r = sd_journal_previous(journal);
if (r == 1)
{
QString line;
// Get the date and time
r = sd_journal_get_realtime_usec(journal, &time);
if (r == 0)
{
QDateTime date;
date.setMSecsSinceEpoch(time/1000);
line.append(date.toString("yyyy.MM.dd hh:mm"));
}
// Color messages according to priority
r = sd_journal_get_data(journal, "PRIORITY", &data, &length);
if (r == 0)
{
int prio = QString::fromUtf8((const char *)data, length).section('=',1).toInt();
if (prio <= 3)
line.append("<span style='color:tomato;'>");
else if (prio == 4)
line.append("<span style='color:khaki;'>");
else
line.append("<span style='color:palegreen;'>");
}
// Get the message itself
r = sd_journal_get_data(journal, "MESSAGE", &data, &length);
if (r == 0)
{
line.append(": " + QString::fromUtf8((const char *)data, length).section('=',1) + "</span>");
if (line.length() > 195)
line = QString(line.left(195) + "..." + "</span>");
reply << line;
}
}
else // previous failed, no more entries
return reply;
}
sd_journal_close(journal);
return reply;
}
