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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/systemctl/systemctl-log-setting.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/systemctl/systemctl-log-setting.c')
-rw-r--r-- | src/systemctl/systemctl-log-setting.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-log-setting.c b/src/systemctl/systemctl-log-setting.c new file mode 100644 index 0000000..88b2e49 --- /dev/null +++ b/src/systemctl/systemctl-log-setting.c @@ -0,0 +1,96 @@ +/* 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; +} |