From 2cb7e0aaedad73b076ea18c6900b0e86c5760d79 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:00:47 +0200 Subject: Adding upstream version 247.3. Signed-off-by: Daniel Baumann --- src/systemctl/systemctl-log-setting.c | 144 ++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 src/systemctl/systemctl-log-setting.c (limited to 'src/systemctl/systemctl-log-setting.c') diff --git a/src/systemctl/systemctl-log-setting.c b/src/systemctl/systemctl-log-setting.c new file mode 100644 index 0000000..64984e4 --- /dev/null +++ b/src/systemctl/systemctl-log-setting.c @@ -0,0 +1,144 @@ +/* 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" + +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"); +} + +static int log_setting_internal(sd_bus *bus, const BusLocator* bloc, const char *verb, const char *value) { + assert(bus); + assert(STR_IN_SET(verb, "log-level", "log-target", "service-log-level", "service-log-target")); + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + bool level = endswith(verb, "log-level"); + int r; + + if (value) { + if (level) { + if (log_level_from_string(value) < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "\"%s\" is not a valid log level.", value); + } + + r = bus_set_property(bus, bloc, + level ? "LogLevel" : "LogTarget", + &error, "s", value); + if (r >= 0) + return 0; + + log_error_errno(r, "Failed to set log %s of %s to %s: %s", + level ? "level" : "target", + bloc->destination, value, bus_error_message(&error, r)); + } else { + _cleanup_free_ char *t = NULL; + + r = bus_get_property_string(bus, bloc, + level ? "LogLevel" : "LogTarget", + &error, &t); + if (r >= 0) { + puts(t); + return 0; + } + + log_error_errno(r, "Failed to get log %s of %s: %s", + level ? "level" : "target", + bloc->destination, bus_error_message(&error, r)); + } + + if (sd_bus_error_has_names(&error, SD_BUS_ERROR_UNKNOWN_METHOD, + SD_BUS_ERROR_UNKNOWN_OBJECT, + SD_BUS_ERROR_UNKNOWN_INTERFACE, + SD_BUS_ERROR_UNKNOWN_PROPERTY)) + give_log_control1_hint(bloc->destination); + return r; +} + +int 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 log_setting_internal(bus, bus_systemd_mgr, 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 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; + + const BusLocator bloc = { + .destination = dbus_name, + .path = "/org/freedesktop/LogControl1", + .interface = "org.freedesktop.LogControl1", + }; + + return log_setting_internal(bus, &bloc, argv[0], argv[2]); +} -- cgit v1.2.3