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journalctl: add --rotate option

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shortcut for `systemctl kill --kill-who main --signal SIGUSR2 systemd-journald`
This commit is contained in:
Evgeny Vereshchagin 2015-09-30 22:54:58 +03:00
parent 234ae00903
commit e3fdfb491f
1 changed files with 37 additions and 0 deletions
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37
src/journal/journalctl.c
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@ -121,6 +121,7 @@ static enum {
ACTION_UPDATE_CATALOG,
ACTION_LIST_BOOTS,
ACTION_FLUSH,
ACTION_ROTATE,
ACTION_VACUUM,
} arg_action = ACTION_SHOW;
@ -236,6 +237,7 @@ static void help(void) {
" --vacuum-size=BYTES Reduce disk usage below specified size\n"
" --vacuum-time=TIME Remove journal files older than specified date\n"
" --flush Flush all journal data from /run into /var\n"
" --rotate Request immediate rotation of the journal files\n"
" --header Show journal header information\n"
" --list-catalog Show all message IDs in the catalog\n"
" --dump-catalog Show entries in the message catalog\n"
@ -277,6 +279,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_FORCE,
ARG_UTC,
ARG_FLUSH,
ARG_ROTATE,
ARG_VACUUM_SIZE,
ARG_VACUUM_TIME,
};
@ -330,6 +333,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "machine", required_argument, NULL, 'M' },
{ "utc", no_argument, NULL, ARG_UTC },
{ "flush", no_argument, NULL, ARG_FLUSH },
{ "rotate", no_argument, NULL, ARG_ROTATE },
{ "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE },
{ "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME },
{}
@ -696,6 +700,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_action = ACTION_FLUSH;
break;
case ARG_ROTATE:
arg_action = ACTION_ROTATE;
break;
case '?':
return -EINVAL;
@ -1769,6 +1777,30 @@ static int flush_to_var(void) {
return 0;
}
static int rotate(void) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
int r;
r = bus_connect_system_systemd(&bus);
if (r < 0)
return log_error_errno(r, "Failed to get D-Bus connection: %m");
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit",
&error,
NULL,
"ssi", "systemd-journald.service", "main", SIGUSR2);
if (r < 0)
return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
return 0;
}
int main(int argc, char *argv[]) {
int r;
_cleanup_journal_close_ sd_journal *j = NULL;
@ -1804,6 +1836,11 @@ int main(int argc, char *argv[]) {
goto finish;
}
if (arg_action == ACTION_ROTATE) {
r = rotate();
goto finish;
}
if (arg_action == ACTION_SETUP_KEYS) {
r = setup_keys();
goto finish;