+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 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 <string.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include <systemd/sd-messages.h>
-
-#include "util.h"
-#include "mkdir.h"
-#include "cgroup-util.h"
-#include "hashmap.h"
-#include "strv.h"
-#include "fileio.h"
-#include "special.h"
-#include "unit-name.h"
-#include "dbus-common.h"
-#include "logind-machine.h"
-
-Machine* machine_new(Manager *manager, const char *name) {
- Machine *m;
-
- assert(manager);
- assert(name);
-
- m = new0(Machine, 1);
- if (!m)
- return NULL;
-
- m->name = strdup(name);
- if (!m->name)
- goto fail;
-
- m->state_file = strappend("/run/systemd/machines/", m->name);
- if (!m->state_file)
- goto fail;
-
- if (hashmap_put(manager->machines, m->name, m) < 0)
- goto fail;
-
- m->class = _MACHINE_CLASS_INVALID;
- m->manager = manager;
-
- return m;
-
-fail:
- free(m->state_file);
- free(m->name);
- free(m);
-
- return NULL;
-}
-
-void machine_free(Machine *m) {
- assert(m);
-
- if (m->in_gc_queue)
- LIST_REMOVE(Machine, gc_queue, m->manager->machine_gc_queue, m);
-
- if (m->scope) {
- hashmap_remove(m->manager->machine_units, m->scope);
- free(m->scope);
- }
-
- free(m->scope_job);
-
- hashmap_remove(m->manager->machines, m->name);
-
- if (m->create_message)
- dbus_message_unref(m->create_message);
-
- free(m->name);
- free(m->state_file);
- free(m->service);
- free(m->root_directory);
- free(m);
-}
-
-int machine_save(Machine *m) {
- _cleanup_free_ char *temp_path = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- int r;
-
- assert(m);
- assert(m->state_file);
-
- if (!m->started)
- return 0;
-
- r = mkdir_safe_label("/run/systemd/machines", 0755, 0, 0);
- if (r < 0)
- goto finish;
-
- r = fopen_temporary(m->state_file, &f, &temp_path);
- if (r < 0)
- goto finish;
-
- fchmod(fileno(f), 0644);
-
- fprintf(f,
- "# This is private data. Do not parse.\n"
- "NAME=%s\n",
- m->name);
-
- if (m->scope)
- fprintf(f, "SCOPE=%s\n", m->scope);
-
- if (m->scope_job)
- fprintf(f, "SCOPE_JOB=%s\n", m->scope_job);
-
- if (m->service)
- fprintf(f, "SERVICE=%s\n", m->service);
-
- if (m->root_directory)
- fprintf(f, "ROOT=%s\n", m->root_directory);
-
- if (!sd_id128_equal(m->id, SD_ID128_NULL))
- fprintf(f, "ID=" SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->id));
-
- if (m->leader != 0)
- fprintf(f, "LEADER=%lu\n", (unsigned long) m->leader);
-
- if (m->class != _MACHINE_CLASS_INVALID)
- fprintf(f, "CLASS=%s\n", machine_class_to_string(m->class));
-
- if (dual_timestamp_is_set(&m->timestamp))
- fprintf(f,
- "REALTIME=%llu\n"
- "MONOTONIC=%llu\n",
- (unsigned long long) m->timestamp.realtime,
- (unsigned long long) m->timestamp.monotonic);
-
- fflush(f);
-
- if (ferror(f) || rename(temp_path, m->state_file) < 0) {
- r = -errno;
- unlink(m->state_file);
- unlink(temp_path);
- }
-
-finish:
- if (r < 0)
- log_error("Failed to save machine data for %s: %s", m->name, strerror(-r));
-
- return r;
-}
-
-int machine_load(Machine *m) {
- _cleanup_free_ char *realtime = NULL, *monotonic = NULL, *id = NULL, *leader = NULL, *class = NULL;
- int r;
-
- assert(m);
-
- r = parse_env_file(m->state_file, NEWLINE,
- "SCOPE", &m->scope,
- "SCOPE_JOB", &m->scope_job,
- "SERVICE", &m->service,
- "ROOT", &m->root_directory,
- "ID", &id,
- "LEADER", &leader,
- "CLASS", &class,
- "REALTIME", &realtime,
- "MONOTONIC", &monotonic,
- NULL);
- if (r < 0) {
- if (r == -ENOENT)
- return 0;
-
- log_error("Failed to read %s: %s", m->state_file, strerror(-r));
- return r;
- }
-
- if (id)
- sd_id128_from_string(id, &m->id);
-
- if (leader)
- parse_pid(leader, &m->leader);
-
- if (class) {
- MachineClass c;
-
- c = machine_class_from_string(class);
- if (c >= 0)
- m->class = c;
- }
-
- if (realtime) {
- unsigned long long l;
- if (sscanf(realtime, "%llu", &l) > 0)
- m->timestamp.realtime = l;
- }
-
- if (monotonic) {
- unsigned long long l;
- if (sscanf(monotonic, "%llu", &l) > 0)
- m->timestamp.monotonic = l;
- }
-
- return r;
-}
-
-static int machine_start_scope(Machine *m) {
- _cleanup_free_ char *description = NULL;
- DBusError error;
- char *job;
- int r;
-
- assert(m);
-
- dbus_error_init(&error);
-
- if (!m->scope) {
- _cleanup_free_ char *escaped = NULL;
-
- escaped = unit_name_escape(m->name);
- if (!escaped)
- return log_oom();
-
- m->scope = strjoin("machine-", m->name, ".scope", NULL);
- if (!m->scope)
- return log_oom();
-
- r = hashmap_put(m->manager->machine_units, m->scope, m);
- if (r < 0)
- log_warning("Failed to create mapping between unit and machine");
- }
-
- description = strappend(m->class == MACHINE_VM ? "Virtual Machine " : "Container ", m->name);
-
- r = manager_start_scope(m->manager, m->scope, m->leader, SPECIAL_MACHINE_SLICE, description, &error, &job);
- if (r < 0) {
- log_error("Failed to start machine scope: %s", bus_error(&error, r));
- dbus_error_free(&error);
- }
-
- free(m->scope_job);
- m->scope_job = job;
-
- return r;
-}
-
-int machine_start(Machine *m) {
- int r;
-
- assert(m);
-
- if (m->started)
- return 0;
-
- /* Create cgroup */
- r = machine_start_scope(m);
- if (r < 0)
- return r;
-
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_MACHINE_START),
- "NAME=%s", m->name,
- "LEADER=%lu", (unsigned long) m->leader,
- "MESSAGE=New machine %s.", m->name,
- NULL);
-
- if (!dual_timestamp_is_set(&m->timestamp))
- dual_timestamp_get(&m->timestamp);
-
- m->started = true;
-
- /* Save new machine data */
- machine_save(m);
-
- machine_send_signal(m, true);
-
- return 0;
-}
-
-static int machine_stop_scope(Machine *m) {
- DBusError error;
- char *job;
- int r;
-
- assert(m);
-
- dbus_error_init(&error);
-
- if (!m->scope)
- return 0;
-
- r = manager_stop_unit(m->manager, m->scope, &error, &job);
- if (r < 0) {
- log_error("Failed to stop machine scope: %s", bus_error(&error, r));
- dbus_error_free(&error);
- return r;
- }
-
- free(m->scope_job);
- m->scope_job = job;
-
- return r;
-}
-
-int machine_stop(Machine *m) {
- int r = 0, k;
- assert(m);
-
- if (m->started)
- log_struct(LOG_INFO,
- MESSAGE_ID(SD_MESSAGE_MACHINE_STOP),
- "NAME=%s", m->name,
- "LEADER=%lu", (unsigned long) m->leader,
- "MESSAGE=Machine %s terminated.", m->name,
- NULL);
-
- /* Kill cgroup */
- k = machine_stop_scope(m);
- if (k < 0)
- r = k;
-
- unlink(m->state_file);
- machine_add_to_gc_queue(m);
-
- if (m->started)
- machine_send_signal(m, false);
-
- m->started = false;
-
- return r;
-}
-
-int machine_check_gc(Machine *m, bool drop_not_started) {
- assert(m);
-
- if (drop_not_started && !m->started)
- return 0;
-
- if (m->scope_job)
- return 1;
-
- if (m->scope)
- return manager_unit_is_active(m->manager, m->scope) != 0;
-
- return 0;
-}
-
-void machine_add_to_gc_queue(Machine *m) {
- assert(m);
-
- if (m->in_gc_queue)
- return;
-
- LIST_PREPEND(Machine, gc_queue, m->manager->machine_gc_queue, m);
- m->in_gc_queue = true;
-}
-
-MachineState machine_get_state(Machine *s) {
- assert(s);
-
- if (s->scope_job)
- return s->started ? MACHINE_OPENING : MACHINE_CLOSING;
-
- return MACHINE_RUNNING;
-}
-
-int machine_kill(Machine *m, KillWho who, int signo) {
- assert(m);
-
- if (!m->scope)
- return -ESRCH;
-
- return manager_kill_unit(m->manager, m->scope, who, signo, NULL);
-}
-
-static const char* const machine_class_table[_MACHINE_CLASS_MAX] = {
- [MACHINE_CONTAINER] = "container",
- [MACHINE_VM] = "vm"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(machine_class, MachineClass);
-
-static const char* const machine_state_table[_MACHINE_STATE_MAX] = {
- [MACHINE_OPENING] = "opening",
- [MACHINE_RUNNING] = "running",
- [MACHINE_CLOSING] = "closing"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(machine_state, MachineState);
~ianmdlvl / elogind.git / blobdiff