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-rw-r--r--src/machine/machinectl.c764
1 files changed, 764 insertions, 0 deletions
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
new file mode 100644
index 0000000000..5d107f360a
--- /dev/null
+++ b/src/machine/machinectl.c
@@ -0,0 +1,764 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <dbus/dbus.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <locale.h>
+
+#include "log.h"
+#include "util.h"
+#include "macro.h"
+#include "pager.h"
+#include "dbus-common.h"
+#include "build.h"
+#include "strv.h"
+#include "cgroup-show.h"
+#include "spawn-polkit-agent.h"
+
+static char **arg_property = NULL;
+static bool arg_all = false;
+static bool arg_full = false;
+static bool arg_no_pager = false;
+static const char *arg_kill_who = NULL;
+static int arg_signal = SIGTERM;
+static enum transport {
+ TRANSPORT_NORMAL,
+ TRANSPORT_SSH,
+ TRANSPORT_POLKIT
+} arg_transport = TRANSPORT_NORMAL;
+static bool arg_ask_password = true;
+static char *arg_host = NULL;
+static char *arg_user = NULL;
+
+static void pager_open_if_enabled(void) {
+
+ /* Cache result before we open the pager */
+ if (arg_no_pager)
+ return;
+
+ pager_open(false);
+}
+
+static int list_machines(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ DBusMessageIter iter, sub, sub2;
+ unsigned k = 0;
+ int r;
+
+ pager_open_if_enabled();
+
+ r = bus_method_call_with_reply (
+ bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "ListMachines",
+ &reply,
+ NULL,
+ DBUS_TYPE_INVALID);
+ if (r)
+ return r;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ if (on_tty())
+ printf("%-32s %-9s %-16s\n", "MACHINE", "CONTAINER", "SERVICE");
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *name, *class, *service, *object;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &class, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &service, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &object, false) < 0) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ printf("%-32s %-9s %-16s\n", name, class, service);
+
+ k++;
+
+ dbus_message_iter_next(&sub);
+ }
+
+ if (on_tty())
+ printf("\n%u machines listed.\n", k);
+
+ return 0;
+}
+
+typedef struct MachineStatusInfo {
+ const char *name;
+ sd_id128_t id;
+ const char *default_control_group;
+ const char *class;
+ const char *service;
+ const char *slice;
+ const char *root_directory;
+ pid_t leader;
+ usec_t timestamp;
+} MachineStatusInfo;
+
+static void print_machine_status_info(MachineStatusInfo *i) {
+ char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
+ char since2[FORMAT_TIMESTAMP_MAX], *s2;
+ assert(i);
+
+ fputs(strna(i->name), stdout);
+
+ if (!sd_id128_equal(i->id, SD_ID128_NULL))
+ printf("(" SD_ID128_FORMAT_STR ")\n", SD_ID128_FORMAT_VAL(i->id));
+ else
+ putchar('\n');
+
+ s1 = format_timestamp_relative(since1, sizeof(since1), i->timestamp);
+ s2 = format_timestamp(since2, sizeof(since2), i->timestamp);
+
+ if (s1)
+ printf("\t Since: %s; %s\n", s2, s1);
+ else if (s2)
+ printf("\t Since: %s\n", s2);
+
+ if (i->leader > 0) {
+ _cleanup_free_ char *t = NULL;
+
+ printf("\t Leader: %u", (unsigned) i->leader);
+
+ get_process_comm(i->leader, &t);
+ if (t)
+ printf(" (%s)", t);
+
+ putchar('\n');
+ }
+
+ if (i->service) {
+ printf("\t Service: %s", i->service);
+
+ if (i->class)
+ printf("; class %s", i->class);
+
+ putchar('\n');
+ } else if (i->class)
+ printf("\t Class: %s\n", i->class);
+
+ if (i->slice)
+ printf("\t Slice: %s\n", i->slice);
+ if (i->root_directory)
+ printf("\t Root: %s\n", i->root_directory);
+
+ if (i->default_control_group) {
+ unsigned c;
+ int output_flags =
+ arg_all * OUTPUT_SHOW_ALL |
+ arg_full * OUTPUT_FULL_WIDTH;
+
+ printf("\t CGroup: %s\n", i->default_control_group);
+
+ if (arg_transport != TRANSPORT_SSH) {
+ c = columns();
+ if (c > 18)
+ c -= 18;
+ else
+ c = 0;
+
+ show_cgroup_and_extra_by_spec(i->default_control_group,
+ "\t\t ", c, false, &i->leader,
+ i->leader > 0 ? 1 : 0,
+ output_flags);
+ }
+ }
+}
+
+static int status_property_machine(const char *name, DBusMessageIter *iter, MachineStatusInfo *i) {
+ assert(name);
+ assert(iter);
+ assert(i);
+
+ switch (dbus_message_iter_get_arg_type(iter)) {
+
+ case DBUS_TYPE_STRING: {
+ const char *s;
+
+ dbus_message_iter_get_basic(iter, &s);
+
+ if (!isempty(s)) {
+ if (streq(name, "Name"))
+ i->name = s;
+ else if (streq(name, "DefaultControlGroup"))
+ i->default_control_group = s;
+ else if (streq(name, "Class"))
+ i->class = s;
+ else if (streq(name, "Service"))
+ i->service = s;
+ else if (streq(name, "Slice"))
+ i->slice = s;
+ else if (streq(name, "RootDirectory"))
+ i->root_directory = s;
+ }
+ break;
+ }
+
+ case DBUS_TYPE_UINT32: {
+ uint32_t u;
+
+ dbus_message_iter_get_basic(iter, &u);
+
+ if (streq(name, "Leader"))
+ i->leader = (pid_t) u;
+
+ break;
+ }
+
+ case DBUS_TYPE_UINT64: {
+ uint64_t u;
+
+ dbus_message_iter_get_basic(iter, &u);
+
+ if (streq(name, "Timestamp"))
+ i->timestamp = (usec_t) u;
+
+ break;
+ }
+
+ case DBUS_TYPE_ARRAY: {
+ DBusMessageIter sub;
+
+ dbus_message_iter_recurse(iter, &sub);
+
+ if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE && streq(name, "Id")) {
+ void *v;
+ int n;
+
+ dbus_message_iter_get_fixed_array(&sub, &v, &n);
+ if (n == 0)
+ i->id = SD_ID128_NULL;
+ else if (n == 16)
+ memcpy(&i->id, v, n);
+ }
+
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int print_property(const char *name, DBusMessageIter *iter) {
+ assert(name);
+ assert(iter);
+
+ if (arg_property && !strv_find(arg_property, name))
+ return 0;
+
+ if (generic_print_property(name, iter, arg_all) > 0)
+ return 0;
+
+ if (arg_all)
+ printf("%s=[unprintable]\n", name);
+
+ return 0;
+}
+
+static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ const char *interface = "";
+ int r;
+ DBusMessageIter iter, sub, sub2, sub3;
+ MachineStatusInfo machine_info = {};
+
+ assert(path);
+ assert(new_line);
+
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.machine1",
+ path,
+ "org.freedesktop.DBus.Properties",
+ "GetAll",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ goto finish;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ if (*new_line)
+ printf("\n");
+
+ *new_line = true;
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *name;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub2, &sub3);
+
+ if (show_properties)
+ r = print_property(name, &sub3);
+ else
+ r = status_property_machine(name, &sub3, &machine_info);
+
+ if (r < 0) {
+ log_error("Failed to parse reply.");
+ goto finish;
+ }
+
+ dbus_message_iter_next(&sub);
+ }
+
+ if (!show_properties)
+ print_machine_status_info(&machine_info);
+
+ r = 0;
+
+finish:
+
+ return r;
+}
+
+static int show(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ int r, ret = 0;
+ DBusError error;
+ unsigned i;
+ bool show_properties, new_line = false;
+
+ assert(bus);
+ assert(args);
+
+ dbus_error_init(&error);
+
+ show_properties = !strstr(args[0], "status");
+
+ pager_open_if_enabled();
+
+ if (show_properties && n <= 1) {
+ /* If not argument is specified inspect the manager
+ * itself */
+
+ ret = show_one(args[0], bus, "/org/freedesktop/machine1", show_properties, &new_line);
+ goto finish;
+ }
+
+ for (i = 1; i < n; i++) {
+ const char *path = NULL;
+
+ ret = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "GetMachine",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &args[i],
+ DBUS_TYPE_INVALID);
+ if (ret < 0)
+ goto finish;
+
+ if (!dbus_message_get_args(reply, &error,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse reply: %s", bus_error_message(&error));
+ ret = -EIO;
+ goto finish;
+ }
+
+ r = show_one(args[0], bus, path, show_properties, &new_line);
+ if (r != 0)
+ ret = r;
+ }
+
+finish:
+ dbus_error_free(&error);
+
+ return ret;
+}
+
+static int kill_machine(DBusConnection *bus, char **args, unsigned n) {
+ unsigned i;
+
+ assert(args);
+
+ if (!arg_kill_who)
+ arg_kill_who = "all";
+
+ for (i = 1; i < n; i++) {
+ int r;
+
+ r = bus_method_call_with_reply (
+ bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "KillMachine",
+ NULL,
+ NULL,
+ DBUS_TYPE_STRING, &args[i],
+ DBUS_TYPE_STRING, &arg_kill_who,
+ DBUS_TYPE_INT32, &arg_signal,
+ DBUS_TYPE_INVALID);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
+static int terminate_machine(DBusConnection *bus, char **args, unsigned n) {
+ unsigned i;
+
+ assert(args);
+
+ for (i = 1; i < n; i++) {
+ int r;
+
+ r = bus_method_call_with_reply (
+ bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "TerminateMachine",
+ NULL,
+ NULL,
+ DBUS_TYPE_STRING, &args[i],
+ DBUS_TYPE_INVALID);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Send control commands to or query the virtual machine and container registration manager.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " -p --property=NAME Show only properties by this name\n"
+ " -a --all Show all properties, including empty ones\n"
+ " --kill-who=WHO Who to send signal to\n"
+ " -l --full Do not ellipsize output\n"
+ " -s --signal=SIGNAL Which signal to send\n"
+ " --no-ask-password Don't prompt for password\n"
+ " -H --host=[USER@]HOST Show information for remote host\n"
+ " -P --privileged Acquire privileges before execution\n"
+ " --no-pager Do not pipe output into a pager\n\n"
+ "Commands:\n"
+ " list List running VMs and containers\n"
+ " status [NAME...] Show VM/container status\n"
+ " show[NAME...] Show properties of one or more VMs/containers\n"
+ " terminate [NAME...] Terminate one or more VMs/containers\n"
+ " kill [NAME...] Send signal to processes of a VM/container\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_KILL_WHO,
+ ARG_NO_ASK_PASSWORD,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "property", required_argument, NULL, 'p' },
+ { "all", no_argument, NULL, 'a' },
+ { "full", no_argument, NULL, 'l' },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "kill-who", required_argument, NULL, ARG_KILL_WHO },
+ { "signal", required_argument, NULL, 's' },
+ { "host", required_argument, NULL, 'H' },
+ { "privileged", no_argument, NULL, 'P' },
+ { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hp:als:H:P", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case 'p': {
+ char **l;
+
+ l = strv_append(arg_property, optarg);
+ if (!l)
+ return -ENOMEM;
+
+ strv_free(arg_property);
+ arg_property = l;
+
+ /* If the user asked for a particular
+ * property, show it to him, even if it is
+ * empty. */
+ arg_all = true;
+ break;
+ }
+
+ case 'a':
+ arg_all = true;
+ break;
+
+ case 'l':
+ arg_full = true;
+ break;
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case ARG_NO_ASK_PASSWORD:
+ arg_ask_password = false;
+ break;
+
+ case ARG_KILL_WHO:
+ arg_kill_who = optarg;
+ break;
+
+ case 's':
+ arg_signal = signal_from_string_try_harder(optarg);
+ if (arg_signal < 0) {
+ log_error("Failed to parse signal string %s.", optarg);
+ return -EINVAL;
+ }
+ break;
+
+ case 'P':
+ arg_transport = TRANSPORT_POLKIT;
+ break;
+
+ case 'H':
+ arg_transport = TRANSPORT_SSH;
+ parse_user_at_host(optarg, &arg_user, &arg_host);
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+static int machinectl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
+
+ static const struct {
+ const char* verb;
+ const enum {
+ MORE,
+ LESS,
+ EQUAL
+ } argc_cmp;
+ const int argc;
+ int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
+ } verbs[] = {
+ { "list", LESS, 1, list_machines },
+ { "status", MORE, 2, show },
+ { "show", MORE, 1, show },
+ { "terminate", MORE, 2, terminate_machine },
+ { "kill", MORE, 2, kill_machine },
+ };
+
+ int left;
+ unsigned i;
+
+ assert(argc >= 0);
+ assert(argv);
+ assert(error);
+
+ left = argc - optind;
+
+ if (left <= 0)
+ /* Special rule: no arguments means "list-sessions" */
+ i = 0;
+ else {
+ if (streq(argv[optind], "help")) {
+ help();
+ return 0;
+ }
+
+ for (i = 0; i < ELEMENTSOF(verbs); i++)
+ if (streq(argv[optind], verbs[i].verb))
+ break;
+
+ if (i >= ELEMENTSOF(verbs)) {
+ log_error("Unknown operation %s", argv[optind]);
+ return -EINVAL;
+ }
+ }
+
+ switch (verbs[i].argc_cmp) {
+
+ case EQUAL:
+ if (left != verbs[i].argc) {
+ log_error("Invalid number of arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case MORE:
+ if (left < verbs[i].argc) {
+ log_error("Too few arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case LESS:
+ if (left > verbs[i].argc) {
+ log_error("Too many arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Unknown comparison operator.");
+ }
+
+ if (!bus) {
+ log_error("Failed to get D-Bus connection: %s", error->message);
+ return -EIO;
+ }
+
+ return verbs[i].dispatch(bus, argv + optind, left);
+}
+
+int main(int argc, char*argv[]) {
+ int r, retval = EXIT_FAILURE;
+ DBusConnection *bus = NULL;
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ setlocale(LC_ALL, "");
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r < 0)
+ goto finish;
+ else if (r == 0) {
+ retval = EXIT_SUCCESS;
+ goto finish;
+ }
+
+ if (arg_transport == TRANSPORT_NORMAL)
+ bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
+ else if (arg_transport == TRANSPORT_POLKIT)
+ bus_connect_system_polkit(&bus, &error);
+ else if (arg_transport == TRANSPORT_SSH)
+ bus_connect_system_ssh(NULL, arg_host, &bus, &error);
+ else
+ assert_not_reached("Uh, invalid transport...");
+
+ r = machinectl_main(bus, argc, argv, &error);
+ retval = r < 0 ? EXIT_FAILURE : r;
+
+finish:
+ if (bus) {
+ dbus_connection_flush(bus);
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ }
+
+ dbus_error_free(&error);
+ dbus_shutdown();
+
+ strv_free(arg_property);
+
+ pager_close();
+
+ return retval;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 09:52:30 +0000