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authorLennart Poettering <lennart@poettering.net>2013-11-19 21:12:59 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-20 20:52:36 +0100
commit718db96199eb307751264e4163555662c9a389fa (patch)
tree9ec8467596ba1acba76bb6273c7797baf68c1a00 /src/core/dbus-socket.c
parent3febea3a0b0a968ea281e7959c1654cbaf95c9bf (diff)
core: convert PID 1 to libsystemd-bus
This patch converts PID 1 to libsystemd-bus and thus drops the dependency on libdbus. The only remaining code using libdbus is a test case that validates our bus marshalling against libdbus' marshalling, and this dependency can be turned off. This patch also adds a couple of things to libsystem-bus, that are necessary to make the port work: - Synthesizing of "Disconnected" messages when bus connections are severed. - Support for attaching multiple vtables for the same interface on the same path. This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus calls which used an inappropriate signature. As a side effect we will now generate PropertiesChanged messages which carry property contents, rather than just invalidation information.
Diffstat (limited to 'src/core/dbus-socket.c')
-rw-r--r--src/core/dbus-socket.c252
1 files changed, 81 insertions, 171 deletions
diff --git a/src/core/dbus-socket.c b/src/core/dbus-socket.c
index 60a8d0501c..e9fa24d1a3 100644
--- a/src/core/dbus-socket.c
+++ b/src/core/dbus-socket.c
@@ -19,122 +19,50 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <errno.h>
-
+#include "unit.h"
+#include "socket.h"
#include "dbus-unit.h"
#include "dbus-execute.h"
#include "dbus-kill.h"
#include "dbus-cgroup.h"
-#include "dbus-common.h"
-#include "selinux-access.h"
#include "dbus-socket.h"
+#include "bus-util.h"
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, socket_result, SocketResult);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
+
+static int property_get_listen(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ sd_bus_error *error,
+ void *userdata) {
-#define BUS_SOCKET_INTERFACE \
- " <interface name=\"org.freedesktop.systemd1.Socket\">\n" \
- " <property name=\"BindIPv6Only\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Backlog\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
- BUS_UNIT_CGROUP_INTERFACE \
- BUS_EXEC_COMMAND_INTERFACE("ExecStartPre") \
- BUS_EXEC_COMMAND_INTERFACE("ExecStartPost") \
- BUS_EXEC_COMMAND_INTERFACE("ExecStopPre") \
- BUS_EXEC_COMMAND_INTERFACE("ExecStopPost") \
- BUS_EXEC_CONTEXT_INTERFACE \
- BUS_KILL_CONTEXT_INTERFACE \
- BUS_CGROUP_CONTEXT_INTERFACE \
- " <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"BindToDevice\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"SocketMode\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"Accept\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"KeepAlive\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Priority\" type=\"i\" access=\"read\"/>\n" \
- " <property name=\"ReceiveBuffer\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"SendBuffer\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"IPTOS\" type=\"i\" access=\"read\"/>\n" \
- " <property name=\"IPTTL\" type=\"i\" access=\"read\"/>\n" \
- " <property name=\"PipeSize\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"FreeBind\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Transparent\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Broadcast\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"PassCredentials\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"PassSecurity\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Mark\" type=\"i\" access=\"read\"/>\n" \
- " <property name=\"MaxConnections\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"NAccepted\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"NConnections\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"MessageQueueMaxMessages\" type=\"x\" access=\"read\"/>\n" \
- " <property name=\"MessageQueueMessageSize\" type=\"x\" access=\"read\"/>\n" \
- " <property name=\"Listen\" type=\"a(ss)\" access=\"read\"/>\n" \
- " <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"ReusePort\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"SmackLabel\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"SmackLabelIPIn\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"SmackLabelIPOut\" type=\"s\" access=\"read\"/>\n" \
- " </interface>\n" \
-
-#define INTROSPECTION \
- DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
- "<node>\n" \
- BUS_UNIT_INTERFACE \
- BUS_SOCKET_INTERFACE \
- BUS_PROPERTIES_INTERFACE \
- BUS_PEER_INTERFACE \
- BUS_INTROSPECTABLE_INTERFACE \
- "</node>\n"
-
-#define INTERFACES_LIST \
- BUS_UNIT_INTERFACES_LIST \
- "org.freedesktop.systemd1.Socket\0"
-
-const char bus_socket_interface[] = BUS_SOCKET_INTERFACE;
-
-const char bus_socket_invalidating_properties[] =
- "ExecStartPre\0"
- "ExecStartPost\0"
- "ExecStopPre\0"
- "ExecStopPost\0"
- "ControlPID\0"
- "NAccepted\0"
- "NConnections\0"
- "Result\0";
-
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_socket_result, socket_result, SocketResult);
-
-static int bus_socket_append_listen(DBusMessageIter *i, const char *property, void *data) {
-
- Socket *s = SOCKET(data);
+
+ Socket *s = SOCKET(userdata);
SocketPort *p;
- DBusMessageIter array, stru;
+ int r;
- assert(data);
- assert(property);
+ assert(bus);
+ assert(reply);
assert(s);
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(ss)", &array))
- return log_oom();
+ r = sd_bus_message_open_container(reply, 'a', "(ss)");
+ if (r < 0)
+ return r;
LIST_FOREACH(port, p, s->ports) {
- const char *type = socket_port_type_to_string(p);
_cleanup_free_ char *address = NULL;
const char *a;
- if (!dbus_message_iter_open_container(&array, DBUS_TYPE_STRUCT, NULL, &stru))
- return log_oom();
-
- if (!dbus_message_iter_append_basic(&stru, DBUS_TYPE_STRING, &type))
- return log_oom();
-
switch (p->type) {
case SOCKET_SOCKET: {
- int r;
-
r = socket_address_print(&p->address, &address);
- if (r) {
- log_error("socket_address_print failed: %s", strerror(-r));
+ if (r)
return r;
- }
+
a = address;
break;
}
@@ -146,98 +74,80 @@ static int bus_socket_append_listen(DBusMessageIter *i, const char *property, vo
break;
default:
- a = type;
+ assert_not_reached("Unknown socket type");
}
- if (!dbus_message_iter_append_basic(&stru, DBUS_TYPE_STRING, &a))
- return -ENOMEM;
-
- if (!dbus_message_iter_close_container(&array, &stru))
- return -ENOMEM;
+ r = sd_bus_message_append(reply, "(ss)", socket_port_type_to_string(p), a);
+ if (r < 0)
+ return r;
}
- if (!dbus_message_iter_close_container(i, &array))
- return -ENOMEM;
-
- return 0;
+ return sd_bus_message_close_container(reply);
}
-static const BusProperty bus_socket_properties[] = {
- { "BindIPv6Only", bus_socket_append_bind_ipv6_only, "s", offsetof(Socket, bind_ipv6_only) },
- { "Backlog", bus_property_append_unsigned, "u", offsetof(Socket, backlog) },
- { "TimeoutUSec", bus_property_append_usec, "t", offsetof(Socket, timeout_usec) },
- BUS_EXEC_COMMAND_PROPERTY("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), true ),
- BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), true ),
- BUS_EXEC_COMMAND_PROPERTY("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), true ),
- BUS_EXEC_COMMAND_PROPERTY("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), true ),
- { "ControlPID", bus_property_append_pid, "u", offsetof(Socket, control_pid) },
- { "BindToDevice", bus_property_append_string, "s", offsetof(Socket, bind_to_device), true },
- { "DirectoryMode", bus_property_append_mode, "u", offsetof(Socket, directory_mode) },
- { "SocketMode", bus_property_append_mode, "u", offsetof(Socket, socket_mode) },
- { "Accept", bus_property_append_bool, "b", offsetof(Socket, accept) },
- { "KeepAlive", bus_property_append_bool, "b", offsetof(Socket, keep_alive) },
- { "Priority", bus_property_append_int, "i", offsetof(Socket, priority) },
- { "ReceiveBuffer", bus_property_append_size, "t", offsetof(Socket, receive_buffer) },
- { "SendBuffer", bus_property_append_size, "t", offsetof(Socket, send_buffer) },
- { "IPTOS", bus_property_append_int, "i", offsetof(Socket, ip_tos) },
- { "IPTTL", bus_property_append_int, "i", offsetof(Socket, ip_ttl) },
- { "PipeSize", bus_property_append_size, "t", offsetof(Socket, pipe_size) },
- { "FreeBind", bus_property_append_bool, "b", offsetof(Socket, free_bind) },
- { "Transparent", bus_property_append_bool, "b", offsetof(Socket, transparent) },
- { "Broadcast", bus_property_append_bool, "b", offsetof(Socket, broadcast) },
- { "PassCredentials",bus_property_append_bool, "b", offsetof(Socket, pass_cred) },
- { "PassSecurity", bus_property_append_bool, "b", offsetof(Socket, pass_sec) },
- { "Listen", bus_socket_append_listen, "a(ss)", 0, },
- { "Mark", bus_property_append_int, "i", offsetof(Socket, mark) },
- { "MaxConnections", bus_property_append_unsigned, "u", offsetof(Socket, max_connections) },
- { "NConnections", bus_property_append_unsigned, "u", offsetof(Socket, n_connections) },
- { "NAccepted", bus_property_append_unsigned, "u", offsetof(Socket, n_accepted) },
- { "MessageQueueMaxMessages", bus_property_append_long, "x", offsetof(Socket, mq_maxmsg) },
- { "MessageQueueMessageSize", bus_property_append_long, "x", offsetof(Socket, mq_msgsize) },
- { "Result", bus_socket_append_socket_result, "s", offsetof(Socket, result) },
- { "ReusePort", bus_property_append_bool, "b", offsetof(Socket, reuseport) },
- { "SmackLabel", bus_property_append_string, "s", offsetof(Socket, smack), true },
- { "SmackLabelIPIn", bus_property_append_string, "s", offsetof(Socket, smack_ip_in), true },
- { "SmackLabelIPOut",bus_property_append_string, "s", offsetof(Socket, smack_ip_out), true },
- {}
+const sd_bus_vtable bus_socket_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_PROPERTY("BindIPv6Only", "s", property_get_bind_ipv6_only, offsetof(Socket, bind_ipv6_only), 0),
+ SD_BUS_PROPERTY("Backlog", "u", bus_property_get_unsigned, offsetof(Socket, backlog), 0),
+ SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Socket, timeout_usec), 0),
+ SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Socket, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("BindToDevice", "s", NULL, offsetof(Socket, bind_to_device), 0),
+ SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), 0),
+ SD_BUS_PROPERTY("SocketMode", "u", bus_property_get_mode, offsetof(Socket, socket_mode), 0),
+ SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), 0),
+ SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), 0),
+ SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), 0),
+ SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), 0),
+ SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), 0),
+ SD_BUS_PROPERTY("IPTOS", "i", bus_property_get_int, offsetof(Socket, ip_tos), 0),
+ SD_BUS_PROPERTY("IPTTL", "i", bus_property_get_int, offsetof(Socket, ip_ttl), 0),
+ SD_BUS_PROPERTY("PipeSize", "t", bus_property_get_size, offsetof(Socket, pipe_size), 0),
+ SD_BUS_PROPERTY("FreeBind", "b", bus_property_get_bool, offsetof(Socket, free_bind), 0),
+ SD_BUS_PROPERTY("Transparent", "b", bus_property_get_bool, offsetof(Socket, transparent), 0),
+ SD_BUS_PROPERTY("Broadcast", "b", bus_property_get_bool, offsetof(Socket, broadcast), 0),
+ SD_BUS_PROPERTY("PassCredentials", "b", bus_property_get_bool, offsetof(Socket, pass_cred), 0),
+ SD_BUS_PROPERTY("PassSecurity", "b", bus_property_get_bool, offsetof(Socket, pass_sec), 0),
+ SD_BUS_PROPERTY("Listen", "a(ss)", property_get_listen, 0, 0),
+ SD_BUS_PROPERTY("Mark", "i", bus_property_get_int, offsetof(Socket, mark), 0),
+ SD_BUS_PROPERTY("MaxConnections", "u", bus_property_get_unsigned, offsetof(Socket, max_connections), 0),
+ SD_BUS_PROPERTY("NConnections", "u", bus_property_get_unsigned, offsetof(Socket, n_connections), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("NAccepted", "u", bus_property_get_unsigned, offsetof(Socket, n_accepted), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("MessageQueueMaxMessages", "x", bus_property_get_long, offsetof(Socket, mq_maxmsg), 0),
+ SD_BUS_PROPERTY("MessageQueueMessageSize", "x", bus_property_get_long, offsetof(Socket, mq_msgsize), 0),
+ SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Socket, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("ReusePort", "b", bus_property_get_bool, offsetof(Socket, reuse_port), 0),
+ SD_BUS_PROPERTY("SmackLabel", "s", NULL, offsetof(Socket, smack), 0),
+ SD_BUS_PROPERTY("SmackLabelIPIn", "s", NULL, offsetof(Socket, smack_ip_in), 0),
+ SD_BUS_PROPERTY("SmackLabelIPOut", "s", NULL, offsetof(Socket, smack_ip_out), 0),
+ BUS_EXEC_COMMAND_VTABLE("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), 0),
+ BUS_EXEC_COMMAND_VTABLE("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), 0),
+ BUS_EXEC_COMMAND_VTABLE("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), 0),
+ BUS_EXEC_COMMAND_VTABLE("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), 0),
+ SD_BUS_VTABLE_END
};
-DBusHandlerResult bus_socket_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
- Socket *s = SOCKET(u);
- const BusBoundProperties bps[] = {
- { "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
- { "org.freedesktop.systemd1.Socket", bus_unit_cgroup_properties, u },
- { "org.freedesktop.systemd1.Socket", bus_socket_properties, s },
- { "org.freedesktop.systemd1.Socket", bus_exec_context_properties, &s->exec_context },
- { "org.freedesktop.systemd1.Socket", bus_kill_context_properties, &s->kill_context },
- { "org.freedesktop.systemd1.Socket", bus_cgroup_context_properties, &s->cgroup_context },
- {}
- };
-
- SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
-
- return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
-}
+const char* const bus_socket_changing_properties[] = {
+ "ControlPID",
+ "NAccepted",
+ "NConnections",
+ "Result",
+ NULL
+};
int bus_socket_set_property(
Unit *u,
const char *name,
- DBusMessageIter *i,
+ sd_bus_message *message,
UnitSetPropertiesMode mode,
- DBusError *error) {
+ sd_bus_error *error) {
Socket *s = SOCKET(u);
- int r;
+ assert(s);
assert(name);
- assert(u);
- assert(i);
+ assert(message);
- r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error);
- if (r != 0)
- return r;
-
- return 0;
+ return bus_cgroup_set_property(u, &s->cgroup_context, name, message, mode, error);
}
int bus_socket_commit_properties(Unit *u) {