2013-06-20 03:45:08 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 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 <errno.h>
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#include <string.h>
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2013-12-22 02:24:05 +01:00
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#include <sys/capability.h>
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2014-05-18 13:48:53 +02:00
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#include <arpa/inet.h>
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2013-06-20 03:45:08 +02:00
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2014-05-18 13:48:53 +02:00
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#include "sd-rtnl.h"
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2013-10-30 02:06:55 +01:00
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#include "bus-util.h"
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2014-03-11 19:03:50 +01:00
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#include "bus-label.h"
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2013-11-05 20:52:39 +01:00
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#include "strv.h"
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2013-07-02 03:47:23 +02:00
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#include "machine.h"
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2014-05-18 13:48:53 +02:00
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#include "rtnl-util.h"
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#include "bus-errors.h"
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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static int property_get_id(
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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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2013-11-21 19:34:37 +01:00
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void *userdata,
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sd_bus_error *error) {
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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Machine *m = userdata;
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int r;
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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assert(bus);
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assert(reply);
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assert(m);
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r = sd_bus_message_append_array(reply, 'y', &m->id, 16);
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if (r < 0)
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return r;
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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return 1;
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2013-06-20 03:45:08 +02:00
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}
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2013-10-30 02:06:55 +01:00
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static int property_get_state(
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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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2013-11-21 19:34:37 +01:00
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void *userdata,
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sd_bus_error *error) {
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2013-10-30 02:06:55 +01:00
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Machine *m = userdata;
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2013-07-02 01:46:30 +02:00
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const char *state;
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2013-10-30 02:06:55 +01:00
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int r;
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2013-07-02 01:46:30 +02:00
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2013-10-30 02:06:55 +01:00
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assert(bus);
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assert(reply);
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2013-07-02 01:46:30 +02:00
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assert(m);
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state = machine_state_to_string(machine_get_state(m));
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2013-10-30 02:06:55 +01:00
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r = sd_bus_message_append_basic(reply, 's', state);
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if (r < 0)
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return r;
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2013-07-02 01:46:30 +02:00
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2013-10-30 02:06:55 +01:00
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return 1;
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2013-07-02 01:46:30 +02:00
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}
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2013-10-30 02:06:55 +01:00
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass);
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2013-06-20 03:45:08 +02:00
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2014-05-18 13:48:53 +02:00
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int bus_machine_method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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2013-10-30 02:06:55 +01:00
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Machine *m = userdata;
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int r;
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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assert(bus);
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assert(message);
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assert(m);
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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r = machine_stop(m);
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if (r < 0)
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2013-11-21 19:34:37 +01:00
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return r;
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2013-06-20 03:45:08 +02:00
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2013-11-21 01:51:16 +01:00
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return sd_bus_reply_method_return(message, NULL);
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2013-06-20 03:45:08 +02:00
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}
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2014-05-18 13:48:53 +02:00
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int bus_machine_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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2013-10-30 02:06:55 +01:00
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Machine *m = userdata;
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const char *swho;
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int32_t signo;
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KillWho who;
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2013-06-20 03:45:08 +02:00
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int r;
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2013-10-30 02:06:55 +01:00
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assert(bus);
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2013-06-20 03:45:08 +02:00
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assert(message);
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2013-10-30 02:06:55 +01:00
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assert(m);
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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r = sd_bus_message_read(message, "si", &swho, &signo);
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if (r < 0)
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2013-11-21 19:34:37 +01:00
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return r;
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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if (isempty(swho))
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who = KILL_ALL;
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else {
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who = kill_who_from_string(swho);
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if (who < 0)
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2013-11-21 19:34:37 +01:00
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
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2013-06-20 03:45:08 +02:00
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}
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2013-10-30 02:06:55 +01:00
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if (signo <= 0 || signo >= _NSIG)
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2013-11-21 19:34:37 +01:00
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
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2013-06-20 03:45:08 +02:00
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2013-10-30 02:06:55 +01:00
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r = machine_kill(m, who, signo);
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if (r < 0)
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2013-11-21 19:34:37 +01:00
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return r;
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2013-06-20 03:45:08 +02:00
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2013-11-21 01:51:16 +01:00
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return sd_bus_reply_method_return(message, NULL);
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2013-06-20 03:45:08 +02:00
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}
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2014-05-18 13:48:53 +02:00
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int bus_machine_method_get_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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_cleanup_close_pair_ int pair[2] = { -1, -1 };
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_cleanup_free_ char *us = NULL, *them = NULL;
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_cleanup_close_ int netns_fd = -1;
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Machine *m = userdata;
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const char *p;
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siginfo_t si;
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pid_t child;
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int r;
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assert(bus);
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assert(message);
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assert(m);
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r = readlink_malloc("/proc/self/ns/net", &us);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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p = procfs_file_alloca(m->leader, "ns/net");
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r = readlink_malloc(p, &them);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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if (streq(us, them))
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return sd_bus_error_setf(error, BUS_ERROR_NO_PRIVATE_NETWORKING, "Machine %s does not use private networking", m->name);
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r = namespace_open(m->leader, NULL, NULL, &netns_fd, NULL);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
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return sd_bus_error_set_errno(error, -errno);
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child = fork();
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if (child < 0)
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return sd_bus_error_set_errno(error, -errno);
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if (child == 0) {
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_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *resp = NULL;
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_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
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sd_rtnl_message *addr;
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pair[0] = safe_close(pair[0]);
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r = namespace_enter(-1, -1, netns_fd, -1);
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if (r < 0)
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_exit(EXIT_FAILURE);
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r = sd_rtnl_open(&rtnl, 0);
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if (r < 0)
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_exit(EXIT_FAILURE);
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r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC);
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if (r < 0)
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_exit(EXIT_FAILURE);
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r = sd_rtnl_message_request_dump(req, true);
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if (r < 0)
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_exit(EXIT_FAILURE);
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r = sd_rtnl_call(rtnl, req, 0, &resp);
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if (r < 0)
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_exit(EXIT_FAILURE);
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for (addr = resp; addr; addr = sd_rtnl_message_next(addr)) {
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uint16_t type;
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unsigned char family;
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union {
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struct in_addr in;
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struct in6_addr in6;
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} in_addr;
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struct iovec iov[2];
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r = sd_rtnl_message_get_type(addr, &type);
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if (r < 0)
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_exit(EXIT_FAILURE);
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if (type != RTM_NEWADDR)
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continue;
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r = sd_rtnl_message_addr_get_family(addr, &family);
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if (r < 0)
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_exit(EXIT_FAILURE);
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iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) };
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switch (family) {
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case AF_INET:
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r = sd_rtnl_message_read_in_addr(addr, IFA_LOCAL, &in_addr.in);
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if (r < 0)
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_exit(EXIT_FAILURE);
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if (in_addr.in.s_addr == htobe32(INADDR_LOOPBACK))
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continue;
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iov[1] = (struct iovec) { .iov_base = &in_addr.in, .iov_len = sizeof(in_addr.in) };
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break;
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case AF_INET6:
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r = sd_rtnl_message_read_in6_addr(addr, IFA_ADDRESS, &in_addr.in6);
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if (r < 0)
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_exit(EXIT_FAILURE);
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if (IN6_IS_ADDR_LOOPBACK(&in_addr.in6))
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continue;
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iov[1] = (struct iovec) { .iov_base = &in_addr.in6, .iov_len = sizeof(in_addr.in6) };
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break;
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default:
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continue;
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}
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r = writev(pair[1], iov, 2);
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if (r < 0)
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_exit(EXIT_FAILURE);
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}
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_exit(EXIT_SUCCESS);
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}
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pair[1] = safe_close(pair[1]);
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r = sd_bus_message_new_method_return(message, &reply);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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r = sd_bus_message_open_container(reply, 'a', "(yay)");
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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for (;;) {
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unsigned char family;
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ssize_t n;
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union {
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struct in_addr in;
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struct in6_addr in6;
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} in_addr;
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struct iovec iov[2];
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struct msghdr mh = {
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.msg_iov = iov,
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.msg_iovlen = 2,
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};
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iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) };
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iov[1] = (struct iovec) { .iov_base = &in_addr, .iov_len = sizeof(in_addr) };
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n = recvmsg(pair[0], &mh, 0);
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if (n < 0)
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return sd_bus_error_set_errno(error, -errno);
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if ((size_t) n < sizeof(family))
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break;
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r = sd_bus_message_open_container(reply, 'r', "yay");
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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r = sd_bus_message_append(reply, "y", family);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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switch (family) {
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case AF_INET:
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if (n != sizeof(struct in_addr) + sizeof(family))
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return sd_bus_error_set_errno(error, EIO);
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r = sd_bus_message_append_array(reply, 'y', &in_addr.in, sizeof(in_addr.in));
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break;
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case AF_INET6:
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if (n != sizeof(struct in6_addr) + sizeof(family))
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return sd_bus_error_set_errno(error, EIO);
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r = sd_bus_message_append_array(reply, 'y', &in_addr.in6, sizeof(in_addr.in6));
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break;
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}
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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}
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r = wait_for_terminate(child, &si);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
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return sd_bus_error_set_errno(error, EIO);
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r = sd_bus_message_close_container(reply);
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|
|
if (r < 0)
|
|
|
|
return sd_bus_error_set_errno(error, r);
|
|
|
|
|
|
|
|
return sd_bus_send(bus, reply, NULL);
|
|
|
|
}
|
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
const sd_bus_vtable machine_vtable[] = {
|
|
|
|
SD_BUS_VTABLE_START(0),
|
2013-12-22 02:24:05 +01:00
|
|
|
SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Machine, name), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_PROPERTY("Id", "ay", property_get_id, 0, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Machine, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Machine, service), SD_BUS_VTABLE_PROPERTY_CONST),
|
2014-02-11 17:15:38 +01:00
|
|
|
SD_BUS_PROPERTY("Unit", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
|
2013-12-22 02:24:05 +01:00
|
|
|
SD_BUS_PROPERTY("Leader", "u", NULL, offsetof(Machine, leader), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Machine, class), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
|
2013-10-30 02:06:55 +01:00
|
|
|
SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
|
2014-05-18 13:48:53 +02:00
|
|
|
SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
|
|
|
|
SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
|
|
|
|
SD_BUS_METHOD("GetAddresses", NULL, "a(yay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
|
|
|
|
SD_BUS_VTABLE_END
|
2013-10-30 02:06:55 +01:00
|
|
|
};
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2013-11-22 01:14:57 +01:00
|
|
|
int machine_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
|
2013-10-30 02:06:55 +01:00
|
|
|
Manager *m = userdata;
|
|
|
|
Machine *machine;
|
2013-11-05 20:52:39 +01:00
|
|
|
int r;
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
assert(bus);
|
|
|
|
assert(path);
|
|
|
|
assert(interface);
|
|
|
|
assert(found);
|
|
|
|
assert(m);
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2013-11-05 20:52:39 +01:00
|
|
|
if (streq(path, "/org/freedesktop/machine1/machine/self")) {
|
2013-11-28 17:50:02 +01:00
|
|
|
_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
|
2013-11-05 20:52:39 +01:00
|
|
|
sd_bus_message *message;
|
|
|
|
pid_t pid;
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2014-05-15 01:15:30 +02:00
|
|
|
message = sd_bus_get_current_message(bus);
|
2013-11-05 20:52:39 +01:00
|
|
|
if (!message)
|
|
|
|
return 0;
|
|
|
|
|
2013-11-28 17:50:02 +01:00
|
|
|
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
|
2013-11-05 20:52:39 +01:00
|
|
|
if (r < 0)
|
2013-11-28 17:50:02 +01:00
|
|
|
return r;
|
|
|
|
|
|
|
|
r = sd_bus_creds_get_pid(creds, &pid);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2013-11-05 20:52:39 +01:00
|
|
|
r = manager_get_machine_by_pid(m, pid, &machine);
|
|
|
|
if (r <= 0)
|
|
|
|
return 0;
|
|
|
|
} else {
|
|
|
|
_cleanup_free_ char *e = NULL;
|
|
|
|
const char *p;
|
|
|
|
|
|
|
|
p = startswith(path, "/org/freedesktop/machine1/machine/");
|
|
|
|
if (!p)
|
|
|
|
return 0;
|
|
|
|
|
2014-03-11 19:03:50 +01:00
|
|
|
e = bus_label_unescape(p);
|
2013-11-05 20:52:39 +01:00
|
|
|
if (!e)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
machine = hashmap_get(m->machines, e);
|
|
|
|
if (!machine)
|
|
|
|
return 0;
|
|
|
|
}
|
2013-06-20 03:45:08 +02:00
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
*found = machine;
|
|
|
|
return 1;
|
2013-06-20 03:45:08 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
char *machine_bus_path(Machine *m) {
|
|
|
|
_cleanup_free_ char *e = NULL;
|
|
|
|
|
|
|
|
assert(m);
|
|
|
|
|
2014-03-11 19:03:50 +01:00
|
|
|
e = bus_label_escape(m->name);
|
2013-06-20 03:45:08 +02:00
|
|
|
if (!e)
|
|
|
|
return NULL;
|
|
|
|
|
2013-07-02 03:47:23 +02:00
|
|
|
return strappend("/org/freedesktop/machine1/machine/", e);
|
2013-06-20 03:45:08 +02:00
|
|
|
}
|
|
|
|
|
2013-11-22 01:14:57 +01:00
|
|
|
int machine_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
|
2013-11-05 20:52:39 +01:00
|
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
|
|
Machine *machine = NULL;
|
|
|
|
Manager *m = userdata;
|
|
|
|
Iterator i;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(bus);
|
|
|
|
assert(path);
|
|
|
|
assert(nodes);
|
|
|
|
|
|
|
|
HASHMAP_FOREACH(machine, m->machines, i) {
|
|
|
|
char *p;
|
|
|
|
|
|
|
|
p = machine_bus_path(machine);
|
|
|
|
if (!p)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2014-03-04 15:20:51 +01:00
|
|
|
r = strv_consume(&l, p);
|
|
|
|
if (r < 0)
|
2013-11-05 20:52:39 +01:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
*nodes = l;
|
|
|
|
l = NULL;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2013-06-20 03:45:08 +02:00
|
|
|
int machine_send_signal(Machine *m, bool new_machine) {
|
|
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
|
|
|
|
assert(m);
|
|
|
|
|
|
|
|
p = machine_bus_path(m);
|
|
|
|
if (!p)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
return sd_bus_emit_signal(
|
|
|
|
m->manager->bus,
|
|
|
|
"/org/freedesktop/machine1",
|
|
|
|
"org.freedesktop.machine1.Manager",
|
|
|
|
new_machine ? "MachineNew" : "MachineRemoved",
|
|
|
|
"so", m->name, p);
|
2013-06-20 03:45:08 +02:00
|
|
|
}
|
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
int machine_send_create_reply(Machine *m, sd_bus_error *error) {
|
|
|
|
_cleanup_bus_message_unref_ sd_bus_message *c = NULL;
|
2013-06-20 03:45:08 +02:00
|
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
|
|
|
|
assert(m);
|
|
|
|
|
2013-07-02 01:46:30 +02:00
|
|
|
if (!m->create_message)
|
|
|
|
return 0;
|
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
c = m->create_message;
|
|
|
|
m->create_message = NULL;
|
2013-07-02 01:46:30 +02:00
|
|
|
|
2013-11-05 00:52:46 +01:00
|
|
|
if (error)
|
2013-11-21 01:51:16 +01:00
|
|
|
return sd_bus_reply_method_error(c, error);
|
2013-11-05 00:52:46 +01:00
|
|
|
|
2013-07-26 18:59:46 +02:00
|
|
|
/* Update the machine state file before we notify the client
|
|
|
|
* about the result. */
|
|
|
|
machine_save(m);
|
|
|
|
|
2013-10-30 02:06:55 +01:00
|
|
|
p = machine_bus_path(m);
|
|
|
|
if (!p)
|
|
|
|
return -ENOMEM;
|
2013-07-02 01:46:30 +02:00
|
|
|
|
2013-11-21 01:51:16 +01:00
|
|
|
return sd_bus_reply_method_return(c, "o", p);
|
2013-07-02 01:46:30 +02:00
|
|
|
}
|