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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "bus-error.h"
#include "bus-locator.h"
#include "pretty-print.h"
#include "syslog-util.h"
#include "systemctl-log-setting.h"
#include "systemctl-util.h"
#include "systemctl.h"
#include "verb-log-control.h"
static void give_log_control1_hint(const char *name) {
_cleanup_free_ char *link = NULL;
if (arg_quiet)
return;
(void) terminal_urlify_man("org.freedesktop.LogControl1", "5", &link);
log_notice("Hint: the service must declare BusName= and implement the appropriate D-Bus interface.\n"
" See the %s for details.", link ?: "org.freedesktop.LogControl1(5) man page");
}
int verb_log_setting(int argc, char *argv[], void *userdata) {
sd_bus *bus;
int r;
assert(argc >= 1 && argc <= 2);
r = acquire_bus(BUS_MANAGER, &bus);
if (r < 0)
return r;
return verb_log_control_common(bus, "org.freedesktop.systemd1", argv[0], argv[1]);
}
static int service_name_to_dbus(sd_bus *bus, const char *name, char **ret_dbus_name) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *bus_name = NULL;
int r;
/* First, look for the BusName= property */
_cleanup_free_ char *dbus_path = unit_dbus_path_from_name(name);
if (!dbus_path)
return log_oom();
r = sd_bus_get_property_string(
bus,
"org.freedesktop.systemd1",
dbus_path,
"org.freedesktop.systemd1.Service",
"BusName",
&error,
&bus_name);
if (r < 0)
return log_error_errno(r, "Failed to obtain BusName= property of %s: %s",
name, bus_error_message(&error, r));
if (isempty(bus_name)) {
log_error("Unit %s doesn't declare BusName=.", name);
give_log_control1_hint(name);
return -ENOLINK;
}
*ret_dbus_name = TAKE_PTR(bus_name);
return 0;
}
int verb_service_log_setting(int argc, char *argv[], void *userdata) {
sd_bus *bus;
_cleanup_free_ char *unit = NULL, *dbus_name = NULL;
int r;
assert(argc >= 2 && argc <= 3);
r = acquire_bus(BUS_FULL, &bus);
if (r < 0)
return r;
r = unit_name_mangle_with_suffix(argv[1], argv[0],
arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
".service", &unit);
if (r < 0)
return log_error_errno(r, "Failed to mangle unit name: %m");
r = service_name_to_dbus(bus, unit, &dbus_name);
if (r < 0)
return r;
r = verb_log_control_common(bus, dbus_name, argv[0], argv[2]);
if (r == -EBADR)
give_log_control1_hint(dbus_name);
return r;
}
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