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cgroup: if the system bus cannot be found, send cgroup empty msg directly to init proces

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This commit is contained in:
Lennart Poettering 2010-08-06 03:21:50 +02:00
parent 2e81c8a557
commit 3c661fadd5
3 changed files with 36 additions and 3 deletions
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3
Makefile.am
View file

@ -479,7 +479,8 @@ systemd_initctl_LDADD = \
$(DBUS_LIBS)
systemd_cgroups_agent_SOURCES = \
src/cgroups-agent.c
src/cgroups-agent.c \
src/dbus-common.c
systemd_cgroups_agent_CFLAGS = \
$(AM_CFLAGS) \

21
src/cgroups-agent.c
View file

@ -22,6 +22,7 @@
#include <dbus/dbus.h>
#include "log.h"
#include "dbus-common.h"
int main(int argc, char *argv[]) {
DBusError error;
@ -36,9 +37,25 @@ int main(int argc, char *argv[]) {
goto finish;
}
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
log_parse_environment();
/* If possible we go via the system bus, to make sure that
* session instances get the messages. If not possible we talk
* to the system instance directly. */
if (!(bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error))) {
log_error("Failed to get D-Bus connection: %s", error.message);
goto finish;
dbus_error_free(&error);
if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", &error))) {
log_error("Failed to get D-Bus connection: %s", error.message);
goto finish;
}
if (bus_check_peercred(bus) < 0) {
log_error("Bus owner not root.");
goto finish;
}
}
if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1/agent", "org.freedesktop.systemd1.Agent", "Released"))) {

15
src/dbus.c
View file

@ -474,11 +474,14 @@ static DBusHandlerResult system_bus_message_filter(DBusConnection *connection, D
static DBusHandlerResult private_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
Manager *m = data;
DBusError error;
assert(connection);
assert(message);
assert(m);
dbus_error_init(&error);
if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL ||
dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_SIGNAL)
log_debug("Got D-Bus request: %s.%s() on %s",
@ -488,6 +491,18 @@ static DBusHandlerResult private_bus_message_filter(DBusConnection *connection,
if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected"))
shutdown_connection(m, connection);
else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
const char *cgroup;
if (!dbus_message_get_args(message, &error,
DBUS_TYPE_STRING, &cgroup,
DBUS_TYPE_INVALID))
log_error("Failed to parse Released message: %s", error.message);
else
cgroup_notify_empty(m, cgroup);
}
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}