8b26cdbd2a
This adds two new settings TriggerLimitIntervalSec= and TriggerLimitBurst= that define a rate limit for activation of socket units. When the limit is hit, the socket is is put into a failure mode. This is an alternative fix for #2467, since the original fix resulted in issue #2684. In a later commit the StartLimitInterval=/StartLimitBurst= rate limiter will be changed to be applied after any start conditions checks are made. This way, there are two separate rate limiters enforced: one at triggering time, before any jobs are queued with this patch, as well as the start limit that is moved again to be run immediately before the unit is activated. Condition checks are done in between the two, and thus no longer affect the start limit.
185 lines
10 KiB
C
185 lines
10 KiB
C
/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "alloc-util.h"
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#include "bus-util.h"
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#include "dbus-cgroup.h"
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#include "dbus-execute.h"
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#include "dbus-socket.h"
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#include "socket.h"
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#include "string-util.h"
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#include "unit.h"
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, socket_result, SocketResult);
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
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static int property_get_listen(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Socket *s = SOCKET(userdata);
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SocketPort *p;
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int r;
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assert(bus);
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assert(reply);
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assert(s);
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r = sd_bus_message_open_container(reply, 'a', "(ss)");
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if (r < 0)
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return r;
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LIST_FOREACH(port, p, s->ports) {
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_cleanup_free_ char *address = NULL;
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const char *a;
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switch (p->type) {
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case SOCKET_SOCKET: {
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r = socket_address_print(&p->address, &address);
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if (r)
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return r;
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a = address;
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break;
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}
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case SOCKET_SPECIAL:
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case SOCKET_MQUEUE:
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case SOCKET_FIFO:
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case SOCKET_USB_FUNCTION:
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a = p->path;
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break;
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default:
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assert_not_reached("Unknown socket type");
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}
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r = sd_bus_message_append(reply, "(ss)", socket_port_type_to_string(p), a);
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if (r < 0)
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return r;
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}
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return sd_bus_message_close_container(reply);
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}
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static int property_get_fdname(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Socket *s = SOCKET(userdata);
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assert(bus);
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assert(reply);
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assert(s);
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return sd_bus_message_append(reply, "s", socket_fdname(s));
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}
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const sd_bus_vtable bus_socket_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_PROPERTY("BindIPv6Only", "s", property_get_bind_ipv6_only, offsetof(Socket, bind_ipv6_only), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Backlog", "u", bus_property_get_unsigned, offsetof(Socket, backlog), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Socket, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("BindToDevice", "s", NULL, offsetof(Socket, bind_to_device), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SocketUser", "s", NULL, offsetof(Socket, user), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SocketGroup", "s", NULL, offsetof(Socket, group), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SocketMode", "u", bus_property_get_mode, offsetof(Socket, socket_mode), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Writable", "b", bus_property_get_bool, offsetof(Socket, writable), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("KeepAliveTimeUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_time), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("KeepAliveIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_interval), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("KeepAliveProbes", "u", bus_property_get_unsigned, offsetof(Socket, keep_alive_cnt), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("DeferAcceptUSec" , "t", bus_property_get_usec, offsetof(Socket, defer_accept), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("NoDelay", "b", bus_property_get_bool, offsetof(Socket, no_delay), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("IPTOS", "i", bus_property_get_int, offsetof(Socket, ip_tos), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("IPTTL", "i", bus_property_get_int, offsetof(Socket, ip_ttl), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("PipeSize", "t", bus_property_get_size, offsetof(Socket, pipe_size), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("FreeBind", "b", bus_property_get_bool, offsetof(Socket, free_bind), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Transparent", "b", bus_property_get_bool, offsetof(Socket, transparent), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Broadcast", "b", bus_property_get_bool, offsetof(Socket, broadcast), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("PassCredentials", "b", bus_property_get_bool, offsetof(Socket, pass_cred), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("PassSecurity", "b", bus_property_get_bool, offsetof(Socket, pass_sec), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("RemoveOnStop", "b", bus_property_get_bool, offsetof(Socket, remove_on_stop), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Listen", "a(ss)", property_get_listen, 0, SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Symlinks", "as", NULL, offsetof(Socket, symlinks), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("Mark", "i", bus_property_get_int, offsetof(Socket, mark), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("MaxConnections", "u", bus_property_get_unsigned, offsetof(Socket, max_connections), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("MessageQueueMaxMessages", "x", bus_property_get_long, offsetof(Socket, mq_maxmsg), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("MessageQueueMessageSize", "x", bus_property_get_long, offsetof(Socket, mq_msgsize), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("ReusePort", "b", bus_property_get_bool, offsetof(Socket, reuse_port), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SmackLabel", "s", NULL, offsetof(Socket, smack), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SmackLabelIPIn", "s", NULL, offsetof(Socket, smack_ip_in), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("SmackLabelIPOut", "s", NULL, offsetof(Socket, smack_ip_out), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Socket, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Socket, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("NConnections", "u", bus_property_get_unsigned, offsetof(Socket, n_connections), 0),
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SD_BUS_PROPERTY("NAccepted", "u", bus_property_get_unsigned, offsetof(Socket, n_accepted), 0),
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SD_BUS_PROPERTY("FileDescriptorName", "s", property_get_fdname, 0, 0),
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SD_BUS_PROPERTY("SocketProtocol", "i", bus_property_get_int, offsetof(Socket, socket_protocol), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("TriggerLimitIntervalSec", "t", bus_property_get_usec, offsetof(Socket, trigger_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("TriggerLimitBurst", "u", bus_property_get_unsigned, offsetof(Socket, trigger_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
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BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
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BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
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BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
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BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
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SD_BUS_VTABLE_END
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};
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int bus_socket_set_property(
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Unit *u,
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const char *name,
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sd_bus_message *message,
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UnitSetPropertiesMode mode,
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sd_bus_error *error) {
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Socket *s = SOCKET(u);
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assert(s);
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assert(name);
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assert(message);
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return bus_cgroup_set_property(u, &s->cgroup_context, name, message, mode, error);
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}
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int bus_socket_commit_properties(Unit *u) {
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assert(u);
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unit_update_cgroup_members_masks(u);
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unit_realize_cgroup(u);
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return 0;
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}
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