mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 16:37:19 +09:00
32baf64d5a
Let's clean up our function naming a bit, and always name the verb_xyz(), where the xyz maps to the command line verb as closely as possible. No actual code changes, just an attempt to make the systemctl sources a bit more systematic, and less surprising.
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "bus-error.h"
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#include "bus-locator.h"
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#include "pretty-print.h"
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#include "syslog-util.h"
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#include "systemctl-log-setting.h"
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#include "systemctl-util.h"
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#include "systemctl.h"
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#include "verb-log-control.h"
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static void give_log_control1_hint(const char *name) {
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_cleanup_free_ char *link = NULL;
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if (arg_quiet)
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return;
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(void) terminal_urlify_man("org.freedesktop.LogControl1", "5", &link);
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log_notice("Hint: the service must declare BusName= and implement the appropriate D-Bus interface.\n"
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" See the %s for details.", link ?: "org.freedesktop.LogControl1(5) man page");
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}
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int verb_log_setting(int argc, char *argv[], void *userdata) {
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sd_bus *bus;
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int r;
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assert(argc >= 1 && argc <= 2);
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r = acquire_bus(BUS_MANAGER, &bus);
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if (r < 0)
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return r;
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return verb_log_control_common(bus, "org.freedesktop.systemd1", argv[0], argv[1]);
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}
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static int service_name_to_dbus(sd_bus *bus, const char *name, char **ret_dbus_name) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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_cleanup_free_ char *bus_name = NULL;
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int r;
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/* First, look for the BusName= property */
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_cleanup_free_ char *dbus_path = unit_dbus_path_from_name(name);
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if (!dbus_path)
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return log_oom();
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r = sd_bus_get_property_string(
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bus,
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"org.freedesktop.systemd1",
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dbus_path,
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"org.freedesktop.systemd1.Service",
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"BusName",
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&error,
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&bus_name);
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if (r < 0)
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return log_error_errno(r, "Failed to obtain BusName= property of %s: %s",
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name, bus_error_message(&error, r));
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if (isempty(bus_name)) {
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log_error("Unit %s doesn't declare BusName=.", name);
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give_log_control1_hint(name);
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return -ENOLINK;
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}
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*ret_dbus_name = TAKE_PTR(bus_name);
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return 0;
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}
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int verb_service_log_setting(int argc, char *argv[], void *userdata) {
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sd_bus *bus;
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_cleanup_free_ char *unit = NULL, *dbus_name = NULL;
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int r;
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assert(argc >= 2 && argc <= 3);
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r = acquire_bus(BUS_FULL, &bus);
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if (r < 0)
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return r;
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r = unit_name_mangle_with_suffix(argv[1], argv[0],
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arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
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".service", &unit);
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if (r < 0)
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return log_error_errno(r, "Failed to mangle unit name: %m");
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r = service_name_to_dbus(bus, unit, &dbus_name);
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if (r < 0)
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return r;
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r = verb_log_control_common(bus, dbus_name, argv[0], argv[2]);
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if (r == -EBADR)
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give_log_control1_hint(dbus_name);
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return r;
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}
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