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authorLuke Shumaker <lukeshu@sbcglobal.net>2016-06-13 11:45:15 -0400
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-06-13 11:45:15 -0400
commit28282a3f352f1be7a4ff956fbeb0bca37bb8bc64 (patch)
tree2a4bcd23e614dfc487d48a2b6d8395b9d2437016 /src/libcore/manager.c
parentfc18b7fdd1286d96a4cc36b74e4da81c6ad6a326 (diff)
./move.sh
Diffstat (limited to 'src/libcore/manager.c')
-rw-r--r--src/libcore/manager.c3134
1 files changed, 3134 insertions, 0 deletions
diff --git a/src/libcore/manager.c b/src/libcore/manager.c
new file mode 100644
index 0000000000..831fdbaabf
--- /dev/null
+++ b/src/libcore/manager.c
@@ -0,0 +1,3134 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/kd.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <sys/inotify.h>
+#include <sys/ioctl.h>
+#include <sys/reboot.h>
+#include <sys/timerfd.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#ifdef HAVE_AUDIT
+#include <libaudit.h>
+#endif
+
+#include <systemd/sd-daemon.h>
+#include <systemd/sd-messages.h>
+
+#include "alloc-util.h"
+#include "audit-fd.h"
+#include "boot-timestamps.h"
+#include "bus-common-errors.h"
+#include "bus-error.h"
+#include "bus-kernel.h"
+#include "bus-util.h"
+#include "dbus-job.h"
+#include "dbus-manager.h"
+#include "dbus-unit.h"
+#include "dbus.h"
+#include "dirent-util.h"
+#include "env-util.h"
+#include "escape.h"
+#include "exit-status.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "hashmap.h"
+#include "io-util.h"
+#include "locale-setup.h"
+#include "log.h"
+#include "macro.h"
+#include "manager.h"
+#include "missing.h"
+#include "mkdir.h"
+#include "mkdir.h"
+#include "parse-util.h"
+#include "path-lookup.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "ratelimit.h"
+#include "rm-rf.h"
+#include "signal-util.h"
+#include "special.h"
+#include "stat-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "time-util.h"
+#include "transaction.h"
+#include "umask-util.h"
+#include "unit-name.h"
+#include "util.h"
+#include "virt.h"
+#include "watchdog.h"
+
+#define NOTIFY_RCVBUF_SIZE (8*1024*1024)
+#define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
+
+/* Initial delay and the interval for printing status messages about running jobs */
+#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
+#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
+#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
+
+static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
+static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
+static int manager_run_generators(Manager *m);
+
+static void manager_watch_jobs_in_progress(Manager *m) {
+ usec_t next;
+ int r;
+
+ assert(m);
+
+ if (m->jobs_in_progress_event_source)
+ return;
+
+ next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
+ r = sd_event_add_time(
+ m->event,
+ &m->jobs_in_progress_event_source,
+ CLOCK_MONOTONIC,
+ next, 0,
+ manager_dispatch_jobs_in_progress, m);
+ if (r < 0)
+ return;
+
+ (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress");
+}
+
+#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
+
+static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
+ char *p = buffer;
+
+ assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
+ assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
+
+ if (pos > 1) {
+ if (pos > 2)
+ p = mempset(p, ' ', pos-2);
+ p = stpcpy(p, ANSI_RED);
+ *p++ = '*';
+ }
+
+ if (pos > 0 && pos <= width) {
+ p = stpcpy(p, ANSI_HIGHLIGHT_RED);
+ *p++ = '*';
+ }
+
+ p = stpcpy(p, ANSI_NORMAL);
+
+ if (pos < width) {
+ p = stpcpy(p, ANSI_RED);
+ *p++ = '*';
+ if (pos < width-1)
+ p = mempset(p, ' ', width-1-pos);
+ strcpy(p, ANSI_NORMAL);
+ }
+}
+
+void manager_flip_auto_status(Manager *m, bool enable) {
+ assert(m);
+
+ if (enable) {
+ if (m->show_status == SHOW_STATUS_AUTO)
+ manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
+ } else {
+ if (m->show_status == SHOW_STATUS_TEMPORARY)
+ manager_set_show_status(m, SHOW_STATUS_AUTO);
+ }
+}
+
+static void manager_print_jobs_in_progress(Manager *m) {
+ _cleanup_free_ char *job_of_n = NULL;
+ Iterator i;
+ Job *j;
+ unsigned counter = 0, print_nr;
+ char cylon[6 + CYLON_BUFFER_EXTRA + 1];
+ unsigned cylon_pos;
+ char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
+ uint64_t x;
+
+ assert(m);
+ assert(m->n_running_jobs > 0);
+
+ manager_flip_auto_status(m, true);
+
+ print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
+
+ HASHMAP_FOREACH(j, m->jobs, i)
+ if (j->state == JOB_RUNNING && counter++ == print_nr)
+ break;
+
+ /* m->n_running_jobs must be consistent with the contents of m->jobs,
+ * so the above loop must have succeeded in finding j. */
+ assert(counter == print_nr + 1);
+ assert(j);
+
+ cylon_pos = m->jobs_in_progress_iteration % 14;
+ if (cylon_pos >= 8)
+ cylon_pos = 14 - cylon_pos;
+ draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
+
+ m->jobs_in_progress_iteration++;
+
+ if (m->n_running_jobs > 1) {
+ if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
+ job_of_n = NULL;
+ }
+
+ format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
+ if (job_get_timeout(j, &x) > 0)
+ format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
+
+ manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
+ "%sA %s job is running for %s (%s / %s)",
+ strempty(job_of_n),
+ job_type_to_string(j->type),
+ unit_description(j->unit),
+ time, limit);
+}
+
+static int have_ask_password(void) {
+ _cleanup_closedir_ DIR *dir;
+
+ dir = opendir("/run/systemd/ask-password");
+ if (!dir) {
+ if (errno == ENOENT)
+ return false;
+ else
+ return -errno;
+ }
+
+ for (;;) {
+ struct dirent *de;
+
+ errno = 0;
+ de = readdir(dir);
+ if (!de && errno > 0)
+ return -errno;
+ if (!de)
+ return false;
+
+ if (startswith(de->d_name, "ask."))
+ return true;
+ }
+}
+
+static int manager_dispatch_ask_password_fd(sd_event_source *source,
+ int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+
+ assert(m);
+
+ flush_fd(fd);
+
+ m->have_ask_password = have_ask_password();
+ if (m->have_ask_password < 0)
+ /* Log error but continue. Negative have_ask_password
+ * is treated as unknown status. */
+ log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
+
+ return 0;
+}
+
+static void manager_close_ask_password(Manager *m) {
+ assert(m);
+
+ m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
+ m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
+ m->have_ask_password = -EINVAL;
+}
+
+static int manager_check_ask_password(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if (!m->ask_password_event_source) {
+ assert(m->ask_password_inotify_fd < 0);
+
+ mkdir_p_label("/run/systemd/ask-password", 0755);
+
+ m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (m->ask_password_inotify_fd < 0)
+ return log_error_errno(errno, "inotify_init1() failed: %m");
+
+ if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
+ log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
+ manager_close_ask_password(m);
+ return -errno;
+ }
+
+ r = sd_event_add_io(m->event, &m->ask_password_event_source,
+ m->ask_password_inotify_fd, EPOLLIN,
+ manager_dispatch_ask_password_fd, m);
+ if (r < 0) {
+ log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
+ manager_close_ask_password(m);
+ return -errno;
+ }
+
+ (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
+
+ /* Queries might have been added meanwhile... */
+ manager_dispatch_ask_password_fd(m->ask_password_event_source,
+ m->ask_password_inotify_fd, EPOLLIN, m);
+ }
+
+ return m->have_ask_password;
+}
+
+static int manager_watch_idle_pipe(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if (m->idle_pipe_event_source)
+ return 0;
+
+ if (m->idle_pipe[2] < 0)
+ return 0;
+
+ r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to watch idle pipe: %m");
+
+ (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
+
+ return 0;
+}
+
+static void manager_close_idle_pipe(Manager *m) {
+ assert(m);
+
+ m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
+
+ safe_close_pair(m->idle_pipe);
+ safe_close_pair(m->idle_pipe + 2);
+}
+
+static int manager_setup_time_change(Manager *m) {
+ int r;
+
+ /* We only care for the cancellation event, hence we set the
+ * timeout to the latest possible value. */
+ struct itimerspec its = {
+ .it_value.tv_sec = TIME_T_MAX,
+ };
+
+ assert(m);
+ assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
+
+ if (m->test_run)
+ return 0;
+
+ /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
+ * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
+
+ m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
+ if (m->time_change_fd < 0)
+ return log_error_errno(errno, "Failed to create timerfd: %m");
+
+ if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
+ log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
+ m->time_change_fd = safe_close(m->time_change_fd);
+ return 0;
+ }
+
+ r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create time change event source: %m");
+
+ (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
+
+ log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
+
+ return 0;
+}
+
+static int enable_special_signals(Manager *m) {
+ _cleanup_close_ int fd = -1;
+
+ assert(m);
+
+ if (m->test_run)
+ return 0;
+
+ /* Enable that we get SIGINT on control-alt-del. In containers
+ * this will fail with EPERM (older) or EINVAL (newer), so
+ * ignore that. */
+ if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
+ log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
+
+ fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0) {
+ /* Support systems without virtual console */
+ if (fd != -ENOENT)
+ log_warning_errno(errno, "Failed to open /dev/tty0: %m");
+ } else {
+ /* Enable that we get SIGWINCH on kbrequest */
+ if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
+ log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
+ }
+
+ return 0;
+}
+
+static int manager_setup_signals(Manager *m) {
+ struct sigaction sa = {
+ .sa_handler = SIG_DFL,
+ .sa_flags = SA_NOCLDSTOP|SA_RESTART,
+ };
+ sigset_t mask;
+ int r;
+
+ assert(m);
+
+ assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
+
+ /* We make liberal use of realtime signals here. On
+ * Linux/glibc we have 30 of them (with the exception of Linux
+ * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
+ * (aka SIGRTMAX). */
+
+ assert_se(sigemptyset(&mask) == 0);
+ sigset_add_many(&mask,
+ SIGCHLD, /* Child died */
+ SIGTERM, /* Reexecute daemon */
+ SIGHUP, /* Reload configuration */
+ SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
+ SIGUSR2, /* systemd: dump status */
+ SIGINT, /* Kernel sends us this on control-alt-del */
+ SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
+ SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
+
+ SIGRTMIN+0, /* systemd: start default.target */
+ SIGRTMIN+1, /* systemd: isolate rescue.target */
+ SIGRTMIN+2, /* systemd: isolate emergency.target */
+ SIGRTMIN+3, /* systemd: start halt.target */
+ SIGRTMIN+4, /* systemd: start poweroff.target */
+ SIGRTMIN+5, /* systemd: start reboot.target */
+ SIGRTMIN+6, /* systemd: start kexec.target */
+
+ /* ... space for more special targets ... */
+
+ SIGRTMIN+13, /* systemd: Immediate halt */
+ SIGRTMIN+14, /* systemd: Immediate poweroff */
+ SIGRTMIN+15, /* systemd: Immediate reboot */
+ SIGRTMIN+16, /* systemd: Immediate kexec */
+
+ /* ... space for more immediate system state changes ... */
+
+ SIGRTMIN+20, /* systemd: enable status messages */
+ SIGRTMIN+21, /* systemd: disable status messages */
+ SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
+ SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
+ SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
+
+ /* .. one free signal here ... */
+
+#if !defined(__hppa64__) && !defined(__hppa__)
+ /* Apparently Linux on hppa has fewer RT
+ * signals (SIGRTMAX is SIGRTMIN+25 there),
+ * hence let's not try to make use of them
+ * here. Since these commands are accessible
+ * by different means and only really a safety
+ * net, the missing functionality on hppa
+ * shouldn't matter. */
+
+ SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
+ SIGRTMIN+27, /* systemd: set log target to console */
+ SIGRTMIN+28, /* systemd: set log target to kmsg */
+ SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
+
+ /* ... one free signal here SIGRTMIN+30 ... */
+#endif
+ -1);
+ assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+
+ m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
+ if (m->signal_fd < 0)
+ return -errno;
+
+ r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
+ if (r < 0)
+ return r;
+
+ (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
+
+ /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
+ * notify processing can still figure out to which process/service a message belongs, before we reap the
+ * process. Also, process this before handling cgroup notifications, so that we always collect child exit
+ * status information before detecting that there's no process in a cgroup. */
+ r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6);
+ if (r < 0)
+ return r;
+
+ if (MANAGER_IS_SYSTEM(m))
+ return enable_special_signals(m);
+
+ return 0;
+}
+
+static void manager_clean_environment(Manager *m) {
+ assert(m);
+
+ /* Let's remove some environment variables that we
+ * need ourselves to communicate with our clients */
+ strv_env_unset_many(
+ m->environment,
+ "NOTIFY_SOCKET",
+ "MAINPID",
+ "MANAGERPID",
+ "LISTEN_PID",
+ "LISTEN_FDS",
+ "LISTEN_FDNAMES",
+ "WATCHDOG_PID",
+ "WATCHDOG_USEC",
+ NULL);
+}
+
+static int manager_default_environment(Manager *m) {
+ assert(m);
+
+ if (MANAGER_IS_SYSTEM(m)) {
+ /* The system manager always starts with a clean
+ * environment for its children. It does not import
+ * the kernel or the parents exported variables.
+ *
+ * The initial passed environ is untouched to keep
+ * /proc/self/environ valid; it is used for tagging
+ * the init process inside containers. */
+ m->environment = strv_new("PATH=" DEFAULT_PATH,
+ NULL);
+
+ /* Import locale variables LC_*= from configuration */
+ locale_setup(&m->environment);
+ } else {
+ /* The user manager passes its own environment
+ * along to its children. */
+ m->environment = strv_copy(environ);
+ }
+
+ if (!m->environment)
+ return -ENOMEM;
+
+ manager_clean_environment(m);
+ strv_sort(m->environment);
+
+ return 0;
+}
+
+
+int manager_new(UnitFileScope scope, bool test_run, Manager **_m) {
+ Manager *m;
+ int r;
+
+ assert(_m);
+ assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER));
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ m->unit_file_scope = scope;
+ m->exit_code = _MANAGER_EXIT_CODE_INVALID;
+ m->default_timer_accuracy_usec = USEC_PER_MINUTE;
+ m->default_tasks_accounting = true;
+ m->default_tasks_max = UINT64_C(512);
+
+#ifdef ENABLE_EFI
+ if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
+ boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
+#endif
+
+ /* Prepare log fields we can use for structured logging */
+ if (MANAGER_IS_SYSTEM(m)) {
+ m->unit_log_field = "UNIT=";
+ m->unit_log_format_string = "UNIT=%s";
+ } else {
+ m->unit_log_field = "USER_UNIT=";
+ m->unit_log_format_string = "USER_UNIT=%s";
+ }
+
+ m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
+
+ m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd =
+ m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd =
+ m->ask_password_inotify_fd = -1;
+
+ m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
+
+ m->have_ask_password = -EINVAL; /* we don't know */
+ m->first_boot = -1;
+
+ m->test_run = test_run;
+
+ /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
+ RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
+
+ r = manager_default_environment(m);
+ if (r < 0)
+ goto fail;
+
+ r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
+ if (r < 0)
+ goto fail;
+
+ r = hashmap_ensure_allocated(&m->jobs, NULL);
+ if (r < 0)
+ goto fail;
+
+ r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
+ if (r < 0)
+ goto fail;
+
+ r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
+ if (r < 0)
+ goto fail;
+
+ (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
+
+ r = manager_setup_signals(m);
+ if (r < 0)
+ goto fail;
+
+ r = manager_setup_cgroup(m);
+ if (r < 0)
+ goto fail;
+
+ r = manager_setup_time_change(m);
+ if (r < 0)
+ goto fail;
+
+ m->udev = udev_new();
+ if (!m->udev) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ /* Note that we set up neither kdbus, nor the notify fd
+ * here. We do that after deserialization, since they might
+ * have gotten serialized across the reexec. */
+
+ m->taint_usr = dir_is_empty("/usr") > 0;
+
+ *_m = m;
+ return 0;
+
+fail:
+ manager_free(m);
+ return r;
+}
+
+static int manager_setup_notify(Manager *m) {
+ int r;
+
+ if (m->test_run)
+ return 0;
+
+ if (m->notify_fd < 0) {
+ _cleanup_close_ int fd = -1;
+ union sockaddr_union sa = {
+ .sa.sa_family = AF_UNIX,
+ };
+ static const int one = 1;
+ const char *e;
+
+ /* First free all secondary fields */
+ m->notify_socket = mfree(m->notify_socket);
+ m->notify_event_source = sd_event_source_unref(m->notify_event_source);
+
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to allocate notification socket: %m");
+
+ fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE);
+
+ e = manager_get_runtime_prefix(m);
+ if (!e) {
+ log_error("Failed to determine runtime prefix.");
+ return -EINVAL;
+ }
+
+ m->notify_socket = strappend(e, "/systemd/notify");
+ if (!m->notify_socket)
+ return log_oom();
+
+ (void) mkdir_parents_label(m->notify_socket, 0755);
+ (void) unlink(m->notify_socket);
+
+ strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
+ r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
+ if (r < 0)
+ return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
+
+ r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
+ if (r < 0)
+ return log_error_errno(errno, "SO_PASSCRED failed: %m");
+
+ m->notify_fd = fd;
+ fd = -1;
+
+ log_debug("Using notification socket %s", m->notify_socket);
+ }
+
+ if (!m->notify_event_source) {
+ r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate notify event source: %m");
+
+ /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
+ * service an exit message belongs. */
+ r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set priority of notify event source: %m");
+
+ (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
+ }
+
+ return 0;
+}
+
+static int manager_setup_cgroups_agent(Manager *m) {
+
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/cgroups-agent",
+ };
+ int r;
+
+ /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
+ * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
+ * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
+ * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
+ * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
+ * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
+ * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
+ * we thus won't lose messages.
+ *
+ * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
+ * to it. The system instance hence listens on this special socket, but the user instances listen on the system
+ * bus for these messages. */
+
+ if (m->test_run)
+ return 0;
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return 0;
+
+ if (cg_unified() > 0) /* We don't need this anymore on the unified hierarchy */
+ return 0;
+
+ if (m->cgroups_agent_fd < 0) {
+ _cleanup_close_ int fd = -1;
+
+ /* First free all secondary fields */
+ m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
+
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m");
+
+ fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE);
+
+ (void) unlink(sa.un.sun_path);
+
+ /* Only allow root to connect to this socket */
+ RUN_WITH_UMASK(0077)
+ r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
+ if (r < 0)
+ return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
+
+ m->cgroups_agent_fd = fd;
+ fd = -1;
+ }
+
+ if (!m->cgroups_agent_event_source) {
+ r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate cgroups agent event source: %m");
+
+ /* Process cgroups notifications early, but after having processed service notification messages or
+ * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification,
+ * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of
+ * cgroup inotify for the unified cgroup stuff. */
+ r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m");
+
+ (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent");
+ }
+
+ return 0;
+}
+
+static int manager_setup_kdbus(Manager *m) {
+ _cleanup_free_ char *p = NULL;
+
+ assert(m);
+
+ if (m->test_run || m->kdbus_fd >= 0)
+ return 0;
+ if (!is_kdbus_available())
+ return -ESOCKTNOSUPPORT;
+
+ m->kdbus_fd = bus_kernel_create_bus(
+ MANAGER_IS_SYSTEM(m) ? "system" : "user",
+ MANAGER_IS_SYSTEM(m), &p);
+
+ if (m->kdbus_fd < 0)
+ return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m");
+
+ log_debug("Successfully set up kdbus on %s", p);
+
+ return 0;
+}
+
+static int manager_connect_bus(Manager *m, bool reexecuting) {
+ bool try_bus_connect;
+
+ assert(m);
+
+ if (m->test_run)
+ return 0;
+
+ try_bus_connect =
+ m->kdbus_fd >= 0 ||
+ reexecuting ||
+ (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"));
+
+ /* Try to connect to the buses, if possible. */
+ return bus_init(m, try_bus_connect);
+}
+
+static unsigned manager_dispatch_cleanup_queue(Manager *m) {
+ Unit *u;
+ unsigned n = 0;
+
+ assert(m);
+
+ while ((u = m->cleanup_queue)) {
+ assert(u->in_cleanup_queue);
+
+ unit_free(u);
+ n++;
+ }
+
+ return n;
+}
+
+enum {
+ GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
+ GC_OFFSET_UNSURE, /* No clue */
+ GC_OFFSET_GOOD, /* We still need this unit */
+ GC_OFFSET_BAD, /* We don't need this unit anymore */
+ _GC_OFFSET_MAX
+};
+
+static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
+ Iterator i;
+ Unit *other;
+ bool is_bad;
+
+ assert(u);
+
+ if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
+ u->gc_marker == gc_marker + GC_OFFSET_BAD ||
+ u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
+ return;
+
+ if (u->in_cleanup_queue)
+ goto bad;
+
+ if (unit_check_gc(u))
+ goto good;
+
+ u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
+
+ is_bad = true;
+
+ SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
+ unit_gc_sweep(other, gc_marker);
+
+ if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
+ goto good;
+
+ if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
+ is_bad = false;
+ }
+
+ if (is_bad)
+ goto bad;
+
+ /* We were unable to find anything out about this entry, so
+ * let's investigate it later */
+ u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
+ unit_add_to_gc_queue(u);
+ return;
+
+bad:
+ /* We definitely know that this one is not useful anymore, so
+ * let's mark it for deletion */
+ u->gc_marker = gc_marker + GC_OFFSET_BAD;
+ unit_add_to_cleanup_queue(u);
+ return;
+
+good:
+ u->gc_marker = gc_marker + GC_OFFSET_GOOD;
+}
+
+static unsigned manager_dispatch_gc_queue(Manager *m) {
+ Unit *u;
+ unsigned n = 0;
+ unsigned gc_marker;
+
+ assert(m);
+
+ /* log_debug("Running GC..."); */
+
+ m->gc_marker += _GC_OFFSET_MAX;
+ if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
+ m->gc_marker = 1;
+
+ gc_marker = m->gc_marker;
+
+ while ((u = m->gc_queue)) {
+ assert(u->in_gc_queue);
+
+ unit_gc_sweep(u, gc_marker);
+
+ LIST_REMOVE(gc_queue, m->gc_queue, u);
+ u->in_gc_queue = false;
+
+ n++;
+
+ if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
+ u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
+ if (u->id)
+ log_unit_debug(u, "Collecting.");
+ u->gc_marker = gc_marker + GC_OFFSET_BAD;
+ unit_add_to_cleanup_queue(u);
+ }
+ }
+
+ m->n_in_gc_queue = 0;
+
+ return n;
+}
+
+static void manager_clear_jobs_and_units(Manager *m) {
+ Unit *u;
+
+ assert(m);
+
+ while ((u = hashmap_first(m->units)))
+ unit_free(u);
+
+ manager_dispatch_cleanup_queue(m);
+
+ assert(!m->load_queue);
+ assert(!m->run_queue);
+ assert(!m->dbus_unit_queue);
+ assert(!m->dbus_job_queue);
+ assert(!m->cleanup_queue);
+ assert(!m->gc_queue);
+
+ assert(hashmap_isempty(m->jobs));
+ assert(hashmap_isempty(m->units));
+
+ m->n_on_console = 0;
+ m->n_running_jobs = 0;
+}
+
+Manager* manager_free(Manager *m) {
+ UnitType c;
+ int i;
+
+ if (!m)
+ return NULL;
+
+ manager_clear_jobs_and_units(m);
+
+ for (c = 0; c < _UNIT_TYPE_MAX; c++)
+ if (unit_vtable[c]->shutdown)
+ unit_vtable[c]->shutdown(m);
+
+ /* If we reexecute ourselves, we keep the root cgroup
+ * around */
+ manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
+
+ lookup_paths_flush_generator(&m->lookup_paths);
+
+ bus_done(m);
+
+ hashmap_free(m->units);
+ hashmap_free(m->jobs);
+ hashmap_free(m->watch_pids1);
+ hashmap_free(m->watch_pids2);
+ hashmap_free(m->watch_bus);
+
+ set_free(m->startup_units);
+ set_free(m->failed_units);
+
+ sd_event_source_unref(m->signal_event_source);
+ sd_event_source_unref(m->notify_event_source);
+ sd_event_source_unref(m->cgroups_agent_event_source);
+ sd_event_source_unref(m->time_change_event_source);
+ sd_event_source_unref(m->jobs_in_progress_event_source);
+ sd_event_source_unref(m->run_queue_event_source);
+
+ safe_close(m->signal_fd);
+ safe_close(m->notify_fd);
+ safe_close(m->cgroups_agent_fd);
+ safe_close(m->time_change_fd);
+ safe_close(m->kdbus_fd);
+
+ manager_close_ask_password(m);
+
+ manager_close_idle_pipe(m);
+
+ udev_unref(m->udev);
+ sd_event_unref(m->event);
+
+ free(m->notify_socket);
+
+ lookup_paths_free(&m->lookup_paths);
+ strv_free(m->environment);
+
+ hashmap_free(m->cgroup_unit);
+ set_free_free(m->unit_path_cache);
+
+ free(m->switch_root);
+ free(m->switch_root_init);
+
+ for (i = 0; i < _RLIMIT_MAX; i++)
+ m->rlimit[i] = mfree(m->rlimit[i]);
+
+ assert(hashmap_isempty(m->units_requiring_mounts_for));
+ hashmap_free(m->units_requiring_mounts_for);
+
+ free(m);
+ return NULL;
+}
+
+void manager_enumerate(Manager *m) {
+ UnitType c;
+
+ assert(m);
+
+ /* Let's ask every type to load all units from disk/kernel
+ * that it might know */
+ for (c = 0; c < _UNIT_TYPE_MAX; c++) {
+ if (!unit_type_supported(c)) {
+ log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
+ continue;
+ }
+
+ if (!unit_vtable[c]->enumerate)
+ continue;
+
+ unit_vtable[c]->enumerate(m);
+ }
+
+ manager_dispatch_load_queue(m);
+}
+
+static void manager_coldplug(Manager *m) {
+ Iterator i;
+ Unit *u;
+ char *k;
+ int r;
+
+ assert(m);
+
+ /* Then, let's set up their initial state. */
+ HASHMAP_FOREACH_KEY(u, k, m->units, i) {
+
+ /* ignore aliases */
+ if (u->id != k)
+ continue;
+
+ r = unit_coldplug(u);
+ if (r < 0)
+ log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
+ }
+}
+
+static void manager_build_unit_path_cache(Manager *m) {
+ char **i;
+ int r;
+
+ assert(m);
+
+ set_free_free(m->unit_path_cache);
+
+ m->unit_path_cache = set_new(&string_hash_ops);
+ if (!m->unit_path_cache) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ /* This simply builds a list of files we know exist, so that
+ * we don't always have to go to disk */
+
+ STRV_FOREACH(i, m->lookup_paths.search_path) {
+ _cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
+
+ d = opendir(*i);
+ if (!d) {
+ if (errno != ENOENT)
+ log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i);
+ continue;
+ }
+
+ FOREACH_DIRENT(de, d, r = -errno; goto fail) {
+ char *p;
+
+ p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
+ if (!p) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ r = set_consume(m->unit_path_cache, p);
+ if (r < 0)
+ goto fail;
+ }
+ }
+
+ return;
+
+fail:
+ log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m");
+ m->unit_path_cache = set_free_free(m->unit_path_cache);
+}
+
+static void manager_distribute_fds(Manager *m, FDSet *fds) {
+ Iterator i;
+ Unit *u;
+
+ assert(m);
+
+ HASHMAP_FOREACH(u, m->units, i) {
+
+ if (fdset_size(fds) <= 0)
+ break;
+
+ if (!UNIT_VTABLE(u)->distribute_fds)
+ continue;
+
+ UNIT_VTABLE(u)->distribute_fds(u, fds);
+ }
+}
+
+int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
+ int r, q;
+
+ assert(m);
+
+ r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
+ if (r < 0)
+ return r;
+
+ /* Make sure the transient directory always exists, so that it remains in the search path */
+ r = mkdir_p_label(m->lookup_paths.transient, 0755);
+ if (r < 0)
+ return r;
+
+ dual_timestamp_get(&m->generators_start_timestamp);
+ r = manager_run_generators(m);
+ dual_timestamp_get(&m->generators_finish_timestamp);
+ if (r < 0)
+ return r;
+
+ lookup_paths_reduce(&m->lookup_paths);
+ manager_build_unit_path_cache(m);
+
+ /* If we will deserialize make sure that during enumeration
+ * this is already known, so we increase the counter here
+ * already */
+ if (serialization)
+ m->n_reloading++;
+
+ /* First, enumerate what we can from all config files */
+ dual_timestamp_get(&m->units_load_start_timestamp);
+ manager_enumerate(m);
+ dual_timestamp_get(&m->units_load_finish_timestamp);
+
+ /* Second, deserialize if there is something to deserialize */
+ if (serialization)
+ r = manager_deserialize(m, serialization, fds);
+
+ /* Any fds left? Find some unit which wants them. This is
+ * useful to allow container managers to pass some file
+ * descriptors to us pre-initialized. This enables
+ * socket-based activation of entire containers. */
+ manager_distribute_fds(m, fds);
+
+ /* We might have deserialized the notify fd, but if we didn't
+ * then let's create the bus now */
+ q = manager_setup_notify(m);
+ if (q < 0 && r == 0)
+ r = q;
+
+ q = manager_setup_cgroups_agent(m);
+ if (q < 0 && r == 0)
+ r = q;
+
+ /* We might have deserialized the kdbus control fd, but if we
+ * didn't, then let's create the bus now. */
+ manager_setup_kdbus(m);
+ manager_connect_bus(m, !!serialization);
+ bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
+
+ /* Third, fire things up! */
+ manager_coldplug(m);
+
+ if (serialization) {
+ assert(m->n_reloading > 0);
+ m->n_reloading--;
+
+ /* Let's wait for the UnitNew/JobNew messages being
+ * sent, before we notify that the reload is
+ * finished */
+ m->send_reloading_done = true;
+ }
+
+ return r;
+}
+
+int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) {
+ int r;
+ Transaction *tr;
+
+ assert(m);
+ assert(type < _JOB_TYPE_MAX);
+ assert(unit);
+ assert(mode < _JOB_MODE_MAX);
+
+ if (mode == JOB_ISOLATE && type != JOB_START)
+ return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
+
+ if (mode == JOB_ISOLATE && !unit->allow_isolate)
+ return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
+
+ log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
+
+ type = job_type_collapse(type, unit);
+
+ tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
+ if (!tr)
+ return -ENOMEM;
+
+ r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false,
+ mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
+ mode == JOB_IGNORE_DEPENDENCIES, e);
+ if (r < 0)
+ goto tr_abort;
+
+ if (mode == JOB_ISOLATE) {
+ r = transaction_add_isolate_jobs(tr, m);
+ if (r < 0)
+ goto tr_abort;
+ }
+
+ r = transaction_activate(tr, m, mode, e);
+ if (r < 0)
+ goto tr_abort;
+
+ log_unit_debug(unit,
+ "Enqueued job %s/%s as %u", unit->id,
+ job_type_to_string(type), (unsigned) tr->anchor_job->id);
+
+ if (_ret)
+ *_ret = tr->anchor_job;
+
+ transaction_free(tr);
+ return 0;
+
+tr_abort:
+ transaction_abort(tr);
+ transaction_free(tr);
+ return r;
+}
+
+int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) {
+ Unit *unit;
+ int r;
+
+ assert(m);
+ assert(type < _JOB_TYPE_MAX);
+ assert(name);
+ assert(mode < _JOB_MODE_MAX);
+
+ r = manager_load_unit(m, name, NULL, NULL, &unit);
+ if (r < 0)
+ return r;
+
+ return manager_add_job(m, type, unit, mode, e, ret);
+}
+
+int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
+
+ assert(m);
+ assert(type < _JOB_TYPE_MAX);
+ assert(name);
+ assert(mode < _JOB_MODE_MAX);
+
+ r = manager_add_job_by_name(m, type, name, mode, &error, ret);
+ if (r < 0)
+ return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r));
+
+ return r;
+}
+
+Job *manager_get_job(Manager *m, uint32_t id) {
+ assert(m);
+
+ return hashmap_get(m->jobs, UINT32_TO_PTR(id));
+}
+
+Unit *manager_get_unit(Manager *m, const char *name) {
+ assert(m);
+ assert(name);
+
+ return hashmap_get(m->units, name);
+}
+
+unsigned manager_dispatch_load_queue(Manager *m) {
+ Unit *u;
+ unsigned n = 0;
+
+ assert(m);
+
+ /* Make sure we are not run recursively */
+ if (m->dispatching_load_queue)
+ return 0;
+
+ m->dispatching_load_queue = true;
+
+ /* Dispatches the load queue. Takes a unit from the queue and
+ * tries to load its data until the queue is empty */
+
+ while ((u = m->load_queue)) {
+ assert(u->in_load_queue);
+
+ unit_load(u);
+ n++;
+ }
+
+ m->dispatching_load_queue = false;
+ return n;
+}
+
+int manager_load_unit_prepare(
+ Manager *m,
+ const char *name,
+ const char *path,
+ sd_bus_error *e,
+ Unit **_ret) {
+
+ Unit *ret;
+ UnitType t;
+ int r;
+
+ assert(m);
+ assert(name || path);
+
+ /* This will prepare the unit for loading, but not actually
+ * load anything from disk. */
+
+ if (path && !is_path(path))
+ return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
+
+ if (!name)
+ name = basename(path);
+
+ t = unit_name_to_type(name);
+
+ if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) {
+ if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE))
+ return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name);
+
+ return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
+ }
+
+ ret = manager_get_unit(m, name);
+ if (ret) {
+ *_ret = ret;
+ return 1;
+ }
+
+ ret = unit_new(m, unit_vtable[t]->object_size);
+ if (!ret)
+ return -ENOMEM;
+
+ if (path) {
+ ret->fragment_path = strdup(path);
+ if (!ret->fragment_path) {
+ unit_free(ret);
+ return -ENOMEM;
+ }
+ }
+
+ r = unit_add_name(ret, name);
+ if (r < 0) {
+ unit_free(ret);
+ return r;
+ }
+
+ unit_add_to_load_queue(ret);
+ unit_add_to_dbus_queue(ret);
+ unit_add_to_gc_queue(ret);
+
+ if (_ret)
+ *_ret = ret;
+
+ return 0;
+}
+
+int manager_load_unit(
+ Manager *m,
+ const char *name,
+ const char *path,
+ sd_bus_error *e,
+ Unit **_ret) {
+
+ int r;
+
+ assert(m);
+
+ /* This will load the service information files, but not actually
+ * start any services or anything. */
+
+ r = manager_load_unit_prepare(m, name, path, e, _ret);
+ if (r != 0)
+ return r;
+
+ manager_dispatch_load_queue(m);
+
+ if (_ret)
+ *_ret = unit_follow_merge(*_ret);
+
+ return 0;
+}
+
+void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
+ Iterator i;
+ Job *j;
+
+ assert(s);
+ assert(f);
+
+ HASHMAP_FOREACH(j, s->jobs, i)
+ job_dump(j, f, prefix);
+}
+
+void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
+ Iterator i;
+ Unit *u;
+ const char *t;
+
+ assert(s);
+ assert(f);
+
+ HASHMAP_FOREACH_KEY(u, t, s->units, i)
+ if (u->id == t)
+ unit_dump(u, f, prefix);
+}
+
+void manager_clear_jobs(Manager *m) {
+ Job *j;
+
+ assert(m);
+
+ while ((j = hashmap_first(m->jobs)))
+ /* No need to recurse. We're cancelling all jobs. */
+ job_finish_and_invalidate(j, JOB_CANCELED, false, false);
+}
+
+static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
+ Manager *m = userdata;
+ Job *j;
+
+ assert(source);
+ assert(m);
+
+ while ((j = m->run_queue)) {
+ assert(j->installed);
+ assert(j->in_run_queue);
+
+ job_run_and_invalidate(j);
+ }
+
+ if (m->n_running_jobs > 0)
+ manager_watch_jobs_in_progress(m);
+
+ if (m->n_on_console > 0)
+ manager_watch_idle_pipe(m);
+
+ return 1;
+}
+
+static unsigned manager_dispatch_dbus_queue(Manager *m) {
+ Job *j;
+ Unit *u;
+ unsigned n = 0;
+
+ assert(m);
+
+ if (m->dispatching_dbus_queue)
+ return 0;
+
+ m->dispatching_dbus_queue = true;
+
+ while ((u = m->dbus_unit_queue)) {
+ assert(u->in_dbus_queue);
+
+ bus_unit_send_change_signal(u);
+ n++;
+ }
+
+ while ((j = m->dbus_job_queue)) {
+ assert(j->in_dbus_queue);
+
+ bus_job_send_change_signal(j);
+ n++;
+ }
+
+ m->dispatching_dbus_queue = false;
+
+ if (m->send_reloading_done) {
+ m->send_reloading_done = false;
+
+ bus_manager_send_reloading(m, false);
+ }
+
+ if (m->queued_message)
+ bus_send_queued_message(m);
+
+ return n;
+}
+
+static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+ char buf[PATH_MAX+1];
+ ssize_t n;
+
+ n = recv(fd, buf, sizeof(buf), 0);
+ if (n < 0)
+ return log_error_errno(errno, "Failed to read cgroups agent message: %m");
+ if (n == 0) {
+ log_error("Got zero-length cgroups agent message, ignoring.");
+ return 0;
+ }
+ if ((size_t) n >= sizeof(buf)) {
+ log_error("Got overly long cgroups agent message, ignoring.");
+ return 0;
+ }
+
+ if (memchr(buf, 0, n)) {
+ log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
+ return 0;
+ }
+ buf[n] = 0;
+
+ manager_notify_cgroup_empty(m, buf);
+ bus_forward_agent_released(m, buf);
+
+ return 0;
+}
+
+static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) {
+ _cleanup_strv_free_ char **tags = NULL;
+
+ assert(m);
+ assert(u);
+ assert(buf);
+ assert(n > 0);
+
+ tags = strv_split(buf, "\n\r");
+ if (!tags) {
+ log_oom();
+ return;
+ }
+
+ if (UNIT_VTABLE(u)->notify_message)
+ UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
+ else
+ log_unit_debug(u, "Got notification message for unit. Ignoring.");
+}
+
+static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ _cleanup_fdset_free_ FDSet *fds = NULL;
+ Manager *m = userdata;
+
+ char buf[NOTIFY_BUFFER_MAX+1];
+ struct iovec iovec = {
+ .iov_base = buf,
+ .iov_len = sizeof(buf)-1,
+ };
+ union {
+ struct cmsghdr cmsghdr;
+ uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
+ CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
+ } control = {};
+ struct msghdr msghdr = {
+ .msg_iov = &iovec,
+ .msg_iovlen = 1,
+ .msg_control = &control,
+ .msg_controllen = sizeof(control),
+ };
+
+ struct cmsghdr *cmsg;
+ struct ucred *ucred = NULL;
+ bool found = false;
+ Unit *u1, *u2, *u3;
+ int r, *fd_array = NULL;
+ unsigned n_fds = 0;
+ ssize_t n;
+
+ assert(m);
+ assert(m->notify_fd == fd);
+
+ if (revents != EPOLLIN) {
+ log_warning("Got unexpected poll event for notify fd.");
+ return 0;
+ }
+
+ n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
+ if (n < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ return 0;
+
+ return -errno;
+ }
+
+ CMSG_FOREACH(cmsg, &msghdr) {
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+
+ fd_array = (int*) CMSG_DATA(cmsg);
+ n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+
+ } else if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_CREDENTIALS &&
+ cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
+
+ ucred = (struct ucred*) CMSG_DATA(cmsg);
+ }
+ }
+
+ if (n_fds > 0) {
+ assert(fd_array);
+
+ r = fdset_new_array(&fds, fd_array, n_fds);
+ if (r < 0) {
+ close_many(fd_array, n_fds);
+ return log_oom();
+ }
+ }
+
+ if (!ucred || ucred->pid <= 0) {
+ log_warning("Received notify message without valid credentials. Ignoring.");
+ return 0;
+ }
+
+ if ((size_t) n >= sizeof(buf)) {
+ log_warning("Received notify message exceeded maximum size. Ignoring.");
+ return 0;
+ }
+
+ buf[n] = 0;
+
+ /* Notify every unit that might be interested, but try
+ * to avoid notifying the same one multiple times. */
+ u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
+ if (u1) {
+ manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
+ found = true;
+ }
+
+ u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
+ if (u2 && u2 != u1) {
+ manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
+ found = true;
+ }
+
+ u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
+ if (u3 && u3 != u2 && u3 != u1) {
+ manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
+ found = true;
+ }
+
+ if (!found)
+ log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
+
+ if (fdset_size(fds) > 0)
+ log_warning("Got auxiliary fds with notification message, closing all.");
+
+ return 0;
+}
+
+static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
+ assert(m);
+ assert(u);
+ assert(si);
+
+ log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
+
+ unit_unwatch_pid(u, si->si_pid);
+
+ if (UNIT_VTABLE(u)->sigchld_event)
+ UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
+}
+
+static int manager_dispatch_sigchld(Manager *m) {
+ assert(m);
+
+ for (;;) {
+ siginfo_t si = {};
+
+ /* First we call waitd() for a PID and do not reap the
+ * zombie. That way we can still access /proc/$PID for
+ * it while it is a zombie. */
+ if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
+
+ if (errno == ECHILD)
+ break;
+
+ if (errno == EINTR)
+ continue;
+
+ return -errno;
+ }
+
+ if (si.si_pid <= 0)
+ break;
+
+ if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
+ _cleanup_free_ char *name = NULL;
+ Unit *u1, *u2, *u3;
+
+ get_process_comm(si.si_pid, &name);
+
+ log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
+ si.si_pid, strna(name),
+ sigchld_code_to_string(si.si_code),
+ si.si_status,
+ strna(si.si_code == CLD_EXITED
+ ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
+ : signal_to_string(si.si_status)));
+
+ /* And now figure out the unit this belongs
+ * to, it might be multiple... */
+ u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
+ if (u1)
+ invoke_sigchld_event(m, u1, &si);
+ u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
+ if (u2 && u2 != u1)
+ invoke_sigchld_event(m, u2, &si);
+ u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
+ if (u3 && u3 != u2 && u3 != u1)
+ invoke_sigchld_event(m, u3, &si);
+ }
+
+ /* And now, we actually reap the zombie. */
+ if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
+ if (errno == EINTR)
+ continue;
+
+ return -errno;
+ }
+ }
+
+ return 0;
+}
+
+static int manager_start_target(Manager *m, const char *name, JobMode mode) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
+
+ log_debug("Activating special unit %s", name);
+
+ r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL);
+ if (r < 0)
+ log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
+
+ return r;
+}
+
+static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+ ssize_t n;
+ struct signalfd_siginfo sfsi;
+ bool sigchld = false;
+ int r;
+
+ assert(m);
+ assert(m->signal_fd == fd);
+
+ if (revents != EPOLLIN) {
+ log_warning("Got unexpected events from signal file descriptor.");
+ return 0;
+ }
+
+ for (;;) {
+ n = read(m->signal_fd, &sfsi, sizeof(sfsi));
+ if (n != sizeof(sfsi)) {
+
+ if (n >= 0)
+ return -EIO;
+
+ if (errno == EINTR || errno == EAGAIN)
+ break;
+
+ return -errno;
+ }
+
+ log_received_signal(sfsi.ssi_signo == SIGCHLD ||
+ (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m))
+ ? LOG_DEBUG : LOG_INFO,
+ &sfsi);
+
+ switch (sfsi.ssi_signo) {
+
+ case SIGCHLD:
+ sigchld = true;
+ break;
+
+ case SIGTERM:
+ if (MANAGER_IS_SYSTEM(m)) {
+ /* This is for compatibility with the
+ * original sysvinit */
+ m->exit_code = MANAGER_REEXECUTE;
+ break;
+ }
+
+ /* Fall through */
+
+ case SIGINT:
+ if (MANAGER_IS_SYSTEM(m)) {
+
+ /* If the user presses C-A-D more than
+ * 7 times within 2s, we reboot
+ * immediately. */
+
+ if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
+ manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
+ else {
+ log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
+ status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
+ m->exit_code = MANAGER_REBOOT;
+ }
+
+ break;
+ }
+
+ /* Run the exit target if there is one, if not, just exit. */
+ if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
+ m->exit_code = MANAGER_EXIT;
+ return 0;
+ }
+
+ break;
+
+ case SIGWINCH:
+ if (MANAGER_IS_SYSTEM(m))
+ manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
+
+ /* This is a nop on non-init */
+ break;
+
+ case SIGPWR:
+ if (MANAGER_IS_SYSTEM(m))
+ manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
+
+ /* This is a nop on non-init */
+ break;
+
+ case SIGUSR1: {
+ Unit *u;
+
+ u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
+
+ if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
+ log_info("Trying to reconnect to bus...");
+ bus_init(m, true);
+ }
+
+ if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
+ log_info("Loading D-Bus service...");
+ manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
+ }
+
+ break;
+ }
+
+ case SIGUSR2: {
+ _cleanup_free_ char *dump = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ size_t size;
+
+ f = open_memstream(&dump, &size);
+ if (!f) {
+ log_warning_errno(errno, "Failed to allocate memory stream: %m");
+ break;
+ }
+
+ manager_dump_units(m, f, "\t");
+ manager_dump_jobs(m, f, "\t");
+
+ r = fflush_and_check(f);
+ if (r < 0) {
+ log_warning_errno(r, "Failed to write status stream: %m");
+ break;
+ }
+
+ log_dump(LOG_INFO, dump);
+ break;
+ }
+
+ case SIGHUP:
+ m->exit_code = MANAGER_RELOAD;
+ break;
+
+ default: {
+
+ /* Starting SIGRTMIN+0 */
+ static const char * const target_table[] = {
+ [0] = SPECIAL_DEFAULT_TARGET,
+ [1] = SPECIAL_RESCUE_TARGET,
+ [2] = SPECIAL_EMERGENCY_TARGET,
+ [3] = SPECIAL_HALT_TARGET,
+ [4] = SPECIAL_POWEROFF_TARGET,
+ [5] = SPECIAL_REBOOT_TARGET,
+ [6] = SPECIAL_KEXEC_TARGET
+ };
+
+ /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
+ static const ManagerExitCode code_table[] = {
+ [0] = MANAGER_HALT,
+ [1] = MANAGER_POWEROFF,
+ [2] = MANAGER_REBOOT,
+ [3] = MANAGER_KEXEC
+ };
+
+ if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
+ (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
+ int idx = (int) sfsi.ssi_signo - SIGRTMIN;
+ manager_start_target(m, target_table[idx],
+ (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
+ break;
+ }
+
+ if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
+ (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
+ m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
+ break;
+ }
+
+ switch (sfsi.ssi_signo - SIGRTMIN) {
+
+ case 20:
+ manager_set_show_status(m, SHOW_STATUS_YES);
+ break;
+
+ case 21:
+ manager_set_show_status(m, SHOW_STATUS_NO);
+ break;
+
+ case 22:
+ log_set_max_level(LOG_DEBUG);
+ log_info("Setting log level to debug.");
+ break;
+
+ case 23:
+ log_set_max_level(LOG_INFO);
+ log_info("Setting log level to info.");
+ break;
+
+ case 24:
+ if (MANAGER_IS_USER(m)) {
+ m->exit_code = MANAGER_EXIT;
+ return 0;
+ }
+
+ /* This is a nop on init */
+ break;
+
+ case 26:
+ case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
+ log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
+ log_notice("Setting log target to journal-or-kmsg.");
+ break;
+
+ case 27:
+ log_set_target(LOG_TARGET_CONSOLE);
+ log_notice("Setting log target to console.");
+ break;
+
+ case 28:
+ log_set_target(LOG_TARGET_KMSG);
+ log_notice("Setting log target to kmsg.");
+ break;
+
+ default:
+ log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
+ }
+ }
+ }
+ }
+
+ if (sigchld)
+ manager_dispatch_sigchld(m);
+
+ return 0;
+}
+
+static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+ Iterator i;
+ Unit *u;
+
+ assert(m);
+ assert(m->time_change_fd == fd);
+
+ log_struct(LOG_INFO,
+ LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
+ LOG_MESSAGE("Time has been changed"),
+ NULL);
+
+ /* Restart the watch */
+ m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
+ m->time_change_fd = safe_close(m->time_change_fd);
+
+ manager_setup_time_change(m);
+
+ HASHMAP_FOREACH(u, m->units, i)
+ if (UNIT_VTABLE(u)->time_change)
+ UNIT_VTABLE(u)->time_change(u);
+
+ return 0;
+}
+
+static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+
+ assert(m);
+ assert(m->idle_pipe[2] == fd);
+
+ m->no_console_output = m->n_on_console > 0;
+
+ manager_close_idle_pipe(m);
+
+ return 0;
+}
+
+static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
+ Manager *m = userdata;
+ int r;
+ uint64_t next;
+
+ assert(m);
+ assert(source);
+
+ manager_print_jobs_in_progress(m);
+
+ next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
+ r = sd_event_source_set_time(source, next);
+ if (r < 0)
+ return r;
+
+ return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
+}
+
+int manager_loop(Manager *m) {
+ int r;
+
+ RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
+
+ assert(m);
+ m->exit_code = MANAGER_OK;
+
+ /* Release the path cache */
+ m->unit_path_cache = set_free_free(m->unit_path_cache);
+
+ manager_check_finished(m);
+
+ /* There might still be some zombies hanging around from
+ * before we were exec()'ed. Let's reap them. */
+ r = manager_dispatch_sigchld(m);
+ if (r < 0)
+ return r;
+
+ while (m->exit_code == MANAGER_OK) {
+ usec_t wait_usec;
+
+ if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m))
+ watchdog_ping();
+
+ if (!ratelimit_test(&rl)) {
+ /* Yay, something is going seriously wrong, pause a little */
+ log_warning("Looping too fast. Throttling execution a little.");
+ sleep(1);
+ }
+
+ if (manager_dispatch_load_queue(m) > 0)
+ continue;
+
+ if (manager_dispatch_gc_queue(m) > 0)
+ continue;
+
+ if (manager_dispatch_cleanup_queue(m) > 0)
+ continue;
+
+ if (manager_dispatch_cgroup_queue(m) > 0)
+ continue;
+
+ if (manager_dispatch_dbus_queue(m) > 0)
+ continue;
+
+ /* Sleep for half the watchdog time */
+ if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) {
+ wait_usec = m->runtime_watchdog / 2;
+ if (wait_usec <= 0)
+ wait_usec = 1;
+ } else
+ wait_usec = USEC_INFINITY;
+
+ r = sd_event_run(m->event, wait_usec);
+ if (r < 0)
+ return log_error_errno(r, "Failed to run event loop: %m");
+ }
+
+ return m->exit_code;
+}
+
+int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
+ _cleanup_free_ char *n = NULL;
+ Unit *u;
+ int r;
+
+ assert(m);
+ assert(s);
+ assert(_u);
+
+ r = unit_name_from_dbus_path(s, &n);
+ if (r < 0)
+ return r;
+
+ r = manager_load_unit(m, n, NULL, e, &u);
+ if (r < 0)
+ return r;
+
+ *_u = u;
+
+ return 0;
+}
+
+int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
+ const char *p;
+ unsigned id;
+ Job *j;
+ int r;
+
+ assert(m);
+ assert(s);
+ assert(_j);
+
+ p = startswith(s, "/org/freedesktop/systemd1/job/");
+ if (!p)
+ return -EINVAL;
+
+ r = safe_atou(p, &id);
+ if (r < 0)
+ return r;
+
+ j = manager_get_job(m, id);
+ if (!j)
+ return -ENOENT;
+
+ *_j = j;
+
+ return 0;
+}
+
+void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
+
+#ifdef HAVE_AUDIT
+ _cleanup_free_ char *p = NULL;
+ const char *msg;
+ int audit_fd, r;
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return;
+
+ audit_fd = get_audit_fd();
+ if (audit_fd < 0)
+ return;
+
+ /* Don't generate audit events if the service was already
+ * started and we're just deserializing */
+ if (MANAGER_IS_RELOADING(m))
+ return;
+
+ if (u->type != UNIT_SERVICE)
+ return;
+
+ r = unit_name_to_prefix_and_instance(u->id, &p);
+ if (r < 0) {
+ log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
+ return;
+ }
+
+ msg = strjoina("unit=", p);
+ if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
+ if (errno == EPERM)
+ /* We aren't allowed to send audit messages?
+ * Then let's not retry again. */
+ close_audit_fd();
+ else
+ log_warning_errno(errno, "Failed to send audit message: %m");
+ }
+#endif
+
+}
+
+void manager_send_unit_plymouth(Manager *m, Unit *u) {
+ static const union sockaddr_union sa = PLYMOUTH_SOCKET;
+ _cleanup_free_ char *message = NULL;
+ _cleanup_close_ int fd = -1;
+ int n = 0;
+
+ /* Don't generate plymouth events if the service was already
+ * started and we're just deserializing */
+ if (MANAGER_IS_RELOADING(m))
+ return;
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return;
+
+ if (detect_container() > 0)
+ return;
+
+ if (u->type != UNIT_SERVICE &&
+ u->type != UNIT_MOUNT &&
+ u->type != UNIT_SWAP)
+ return;
+
+ /* We set SOCK_NONBLOCK here so that we rather drop the
+ * message then wait for plymouth */
+ fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0) {
+ log_error_errno(errno, "socket() failed: %m");
+ return;
+ }
+
+ if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) {
+
+ if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
+ log_error_errno(errno, "connect() failed: %m");
+ return;
+ }
+
+ if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
+ log_oom();
+ return;
+ }
+
+ errno = 0;
+ if (write(fd, message, n + 1) != n + 1)
+ if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
+ log_error_errno(errno, "Failed to write Plymouth message: %m");
+}
+
+int manager_open_serialization(Manager *m, FILE **_f) {
+ const char *path;
+ int fd = -1;
+ FILE *f;
+
+ assert(_f);
+
+ path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp";
+ fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ log_debug("Serializing state to %s", path);
+
+ f = fdopen(fd, "w+");
+ if (!f) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ *_f = f;
+
+ return 0;
+}
+
+int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
+ Iterator i;
+ Unit *u;
+ const char *t;
+ char **e;
+ int r;
+
+ assert(m);
+ assert(f);
+ assert(fds);
+
+ m->n_reloading++;
+
+ fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
+ fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
+ fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
+ fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
+
+ dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
+ dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
+ dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
+ dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
+
+ if (!in_initrd()) {
+ dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
+ dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
+ dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
+ dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
+ dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
+ dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
+ dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
+ dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
+ }
+
+ if (!switching_root) {
+ STRV_FOREACH(e, m->environment) {
+ _cleanup_free_ char *ce;
+
+ ce = cescape(*e);
+ if (!ce)
+ return -ENOMEM;
+
+ fprintf(f, "env=%s\n", *e);
+ }
+ }
+
+ if (m->notify_fd >= 0) {
+ int copy;
+
+ copy = fdset_put_dup(fds, m->notify_fd);
+ if (copy < 0)
+ return copy;
+
+ fprintf(f, "notify-fd=%i\n", copy);
+ fprintf(f, "notify-socket=%s\n", m->notify_socket);
+ }
+
+ if (m->cgroups_agent_fd >= 0) {
+ int copy;
+
+ copy = fdset_put_dup(fds, m->cgroups_agent_fd);
+ if (copy < 0)
+ return copy;
+
+ fprintf(f, "cgroups-agent-fd=%i\n", copy);
+ }
+
+ if (m->kdbus_fd >= 0) {
+ int copy;
+
+ copy = fdset_put_dup(fds, m->kdbus_fd);
+ if (copy < 0)
+ return copy;
+
+ fprintf(f, "kdbus-fd=%i\n", copy);
+ }
+
+ bus_track_serialize(m->subscribed, f);
+
+ fputc('\n', f);
+
+ HASHMAP_FOREACH_KEY(u, t, m->units, i) {
+ if (u->id != t)
+ continue;
+
+ /* Start marker */
+ fputs(u->id, f);
+ fputc('\n', f);
+
+ r = unit_serialize(u, f, fds, !switching_root);
+ if (r < 0) {
+ m->n_reloading--;
+ return r;
+ }
+ }
+
+ assert(m->n_reloading > 0);
+ m->n_reloading--;
+
+ if (ferror(f))
+ return -EIO;
+
+ r = bus_fdset_add_all(m, fds);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
+ int r = 0;
+
+ assert(m);
+ assert(f);
+
+ log_debug("Deserializing state...");
+
+ m->n_reloading++;
+
+ for (;;) {
+ char line[LINE_MAX], *l;
+
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ r = 0;
+ else
+ r = -errno;
+
+ goto finish;
+ }
+
+ char_array_0(line);
+ l = strstrip(line);
+
+ if (l[0] == 0)
+ break;
+
+ if (startswith(l, "current-job-id=")) {
+ uint32_t id;
+
+ if (safe_atou32(l+15, &id) < 0)
+ log_debug("Failed to parse current job id value %s", l+15);
+ else
+ m->current_job_id = MAX(m->current_job_id, id);
+
+ } else if (startswith(l, "n-installed-jobs=")) {
+ uint32_t n;
+
+ if (safe_atou32(l+17, &n) < 0)
+ log_debug("Failed to parse installed jobs counter %s", l+17);
+ else
+ m->n_installed_jobs += n;
+
+ } else if (startswith(l, "n-failed-jobs=")) {
+ uint32_t n;
+
+ if (safe_atou32(l+14, &n) < 0)
+ log_debug("Failed to parse failed jobs counter %s", l+14);
+ else
+ m->n_failed_jobs += n;
+
+ } else if (startswith(l, "taint-usr=")) {
+ int b;
+
+ b = parse_boolean(l+10);
+ if (b < 0)
+ log_debug("Failed to parse taint /usr flag %s", l+10);
+ else
+ m->taint_usr = m->taint_usr || b;
+
+ } else if (startswith(l, "firmware-timestamp="))
+ dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
+ else if (startswith(l, "loader-timestamp="))
+ dual_timestamp_deserialize(l+17, &m->loader_timestamp);
+ else if (startswith(l, "kernel-timestamp="))
+ dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
+ else if (startswith(l, "initrd-timestamp="))
+ dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
+ else if (startswith(l, "userspace-timestamp="))
+ dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
+ else if (startswith(l, "finish-timestamp="))
+ dual_timestamp_deserialize(l+17, &m->finish_timestamp);
+ else if (startswith(l, "security-start-timestamp="))
+ dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
+ else if (startswith(l, "security-finish-timestamp="))
+ dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
+ else if (startswith(l, "generators-start-timestamp="))
+ dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
+ else if (startswith(l, "generators-finish-timestamp="))
+ dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
+ else if (startswith(l, "units-load-start-timestamp="))
+ dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
+ else if (startswith(l, "units-load-finish-timestamp="))
+ dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
+ else if (startswith(l, "env=")) {
+ _cleanup_free_ char *uce = NULL;
+ char **e;
+
+ r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
+ if (r < 0)
+ goto finish;
+
+ e = strv_env_set(m->environment, uce);
+ if (!e) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ strv_free(m->environment);
+ m->environment = e;
+
+ } else if (startswith(l, "notify-fd=")) {
+ int fd;
+
+ if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_debug("Failed to parse notify fd: %s", l + 10);
+ else {
+ m->notify_event_source = sd_event_source_unref(m->notify_event_source);
+ safe_close(m->notify_fd);
+ m->notify_fd = fdset_remove(fds, fd);
+ }
+
+ } else if (startswith(l, "notify-socket=")) {
+ char *n;
+
+ n = strdup(l+14);
+ if (!n) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ free(m->notify_socket);
+ m->notify_socket = n;
+
+ } else if (startswith(l, "cgroups-agent-fd=")) {
+ int fd;
+
+ if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_debug("Failed to parse cgroups agent fd: %s", l + 10);
+ else {
+ m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
+ safe_close(m->cgroups_agent_fd);
+ m->cgroups_agent_fd = fdset_remove(fds, fd);
+ }
+
+ } else if (startswith(l, "kdbus-fd=")) {
+ int fd;
+
+ if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_debug("Failed to parse kdbus fd: %s", l + 9);
+ else {
+ safe_close(m->kdbus_fd);
+ m->kdbus_fd = fdset_remove(fds, fd);
+ }
+
+ } else {
+ int k;
+
+ k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
+ if (k < 0)
+ log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
+ else if (k == 0)
+ log_debug("Unknown serialization item '%s'", l);
+ }
+ }
+
+ for (;;) {
+ Unit *u;
+ char name[UNIT_NAME_MAX+2];
+
+ /* Start marker */
+ if (!fgets(name, sizeof(name), f)) {
+ if (feof(f))
+ r = 0;
+ else
+ r = -errno;
+
+ goto finish;
+ }
+
+ char_array_0(name);
+
+ r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
+ if (r < 0)
+ goto finish;
+
+ r = unit_deserialize(u, f, fds);
+ if (r < 0)
+ goto finish;
+ }
+
+finish:
+ if (ferror(f))
+ r = -EIO;
+
+ assert(m->n_reloading > 0);
+ m->n_reloading--;
+
+ return r;
+}
+
+int manager_reload(Manager *m) {
+ int r, q;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_fdset_free_ FDSet *fds = NULL;
+
+ assert(m);
+
+ r = manager_open_serialization(m, &f);
+ if (r < 0)
+ return r;
+
+ m->n_reloading++;
+ bus_manager_send_reloading(m, true);
+
+ fds = fdset_new();
+ if (!fds) {
+ m->n_reloading--;
+ return -ENOMEM;
+ }
+
+ r = manager_serialize(m, f, fds, false);
+ if (r < 0) {
+ m->n_reloading--;
+ return r;
+ }
+
+ if (fseeko(f, 0, SEEK_SET) < 0) {
+ m->n_reloading--;
+ return -errno;
+ }
+
+ /* From here on there is no way back. */
+ manager_clear_jobs_and_units(m);
+ lookup_paths_flush_generator(&m->lookup_paths);
+ lookup_paths_free(&m->lookup_paths);
+
+ q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
+ if (q < 0 && r >= 0)
+ r = q;
+
+ /* Find new unit paths */
+ q = manager_run_generators(m);
+ if (q < 0 && r >= 0)
+ r = q;
+
+ lookup_paths_reduce(&m->lookup_paths);
+ manager_build_unit_path_cache(m);
+
+ /* First, enumerate what we can from all config files */
+ manager_enumerate(m);
+
+ /* Second, deserialize our stored data */
+ q = manager_deserialize(m, f, fds);
+ if (q < 0 && r >= 0)
+ r = q;
+
+ fclose(f);
+ f = NULL;
+
+ /* Re-register notify_fd as event source */
+ q = manager_setup_notify(m);
+ if (q < 0 && r >= 0)
+ r = q;
+
+ q = manager_setup_cgroups_agent(m);
+ if (q < 0 && r >= 0)
+ r = q;
+
+ /* Third, fire things up! */
+ manager_coldplug(m);
+
+ /* Sync current state of bus names with our set of listening units */
+ if (m->api_bus)
+ manager_sync_bus_names(m, m->api_bus);
+
+ assert(m->n_reloading > 0);
+ m->n_reloading--;
+
+ m->send_reloading_done = true;
+
+ return r;
+}
+
+void manager_reset_failed(Manager *m) {
+ Unit *u;
+ Iterator i;
+
+ assert(m);
+
+ HASHMAP_FOREACH(u, m->units, i)
+ unit_reset_failed(u);
+}
+
+bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
+ Unit *u;
+
+ assert(m);
+ assert(name);
+
+ /* Returns true if the unit is inactive or going down */
+ u = manager_get_unit(m, name);
+ if (!u)
+ return true;
+
+ return unit_inactive_or_pending(u);
+}
+
+static void manager_notify_finished(Manager *m) {
+ char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
+ usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
+
+ if (m->test_run)
+ return;
+
+ if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) {
+
+ /* Note that m->kernel_usec.monotonic is always at 0,
+ * and m->firmware_usec.monotonic and
+ * m->loader_usec.monotonic should be considered
+ * negative values. */
+
+ firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
+ loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
+ userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
+ total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
+
+ if (dual_timestamp_is_set(&m->initrd_timestamp)) {
+
+ kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
+ initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
+
+ log_struct(LOG_INFO,
+ LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "KERNEL_USEC="USEC_FMT, kernel_usec,
+ "INITRD_USEC="USEC_FMT, initrd_usec,
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
+ format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
+ format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
+ format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
+ NULL);
+ } else {
+ kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
+ initrd_usec = 0;
+
+ log_struct(LOG_INFO,
+ LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "KERNEL_USEC="USEC_FMT, kernel_usec,
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
+ format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
+ format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
+ NULL);
+ }
+ } else {
+ firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
+ total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
+
+ log_struct(LOG_INFO,
+ LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ LOG_MESSAGE("Startup finished in %s.",
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
+ NULL);
+ }
+
+ bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
+
+ sd_notifyf(false,
+ "READY=1\n"
+ "STATUS=Startup finished in %s.",
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
+}
+
+void manager_check_finished(Manager *m) {
+ assert(m);
+
+ if (MANAGER_IS_RELOADING(m))
+ return;
+
+ /* Verify that we are actually running currently. Initially
+ * the exit code is set to invalid, and during operation it is
+ * then set to MANAGER_OK */
+ if (m->exit_code != MANAGER_OK)
+ return;
+
+ if (hashmap_size(m->jobs) > 0) {
+ if (m->jobs_in_progress_event_source)
+ /* Ignore any failure, this is only for feedback */
+ (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
+
+ return;
+ }
+
+ manager_flip_auto_status(m, false);
+
+ /* Notify Type=idle units that we are done now */
+ manager_close_idle_pipe(m);
+
+ /* Turn off confirm spawn now */
+ m->confirm_spawn = false;
+
+ /* No need to update ask password status when we're going non-interactive */
+ manager_close_ask_password(m);
+
+ /* This is no longer the first boot */
+ manager_set_first_boot(m, false);
+
+ if (dual_timestamp_is_set(&m->finish_timestamp))
+ return;
+
+ dual_timestamp_get(&m->finish_timestamp);
+
+ manager_notify_finished(m);
+
+ manager_invalidate_startup_units(m);
+}
+
+static int manager_run_generators(Manager *m) {
+ _cleanup_strv_free_ char **paths = NULL;
+ const char *argv[5];
+ char **path;
+ int r;
+
+ assert(m);
+
+ if (m->test_run)
+ return 0;
+
+ paths = generator_binary_paths(m->unit_file_scope);
+ if (!paths)
+ return log_oom();
+
+ /* Optimize by skipping the whole process by not creating output directories
+ * if no generators are found. */
+ STRV_FOREACH(path, paths) {
+ if (access(*path, F_OK) >= 0)
+ goto found;
+ if (errno != ENOENT)
+ log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
+ }
+
+ return 0;
+
+ found:
+ r = lookup_paths_mkdir_generator(&m->lookup_paths);
+ if (r < 0)
+ goto finish;
+
+ argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
+ argv[1] = m->lookup_paths.generator;
+ argv[2] = m->lookup_paths.generator_early;
+ argv[3] = m->lookup_paths.generator_late;
+ argv[4] = NULL;
+
+ RUN_WITH_UMASK(0022)
+ execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
+
+finish:
+ lookup_paths_trim_generator(&m->lookup_paths);
+ return r;
+}
+
+int manager_environment_add(Manager *m, char **minus, char **plus) {
+ char **a = NULL, **b = NULL, **l;
+ assert(m);
+
+ l = m->environment;
+
+ if (!strv_isempty(minus)) {
+ a = strv_env_delete(l, 1, minus);
+ if (!a)
+ return -ENOMEM;
+
+ l = a;
+ }
+
+ if (!strv_isempty(plus)) {
+ b = strv_env_merge(2, l, plus);
+ if (!b) {
+ strv_free(a);
+ return -ENOMEM;
+ }
+
+ l = b;
+ }
+
+ if (m->environment != l)
+ strv_free(m->environment);
+ if (a != l)
+ strv_free(a);
+ if (b != l)
+ strv_free(b);
+
+ m->environment = l;
+ manager_clean_environment(m);
+ strv_sort(m->environment);
+
+ return 0;
+}
+
+int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
+ int i;
+
+ assert(m);
+
+ for (i = 0; i < _RLIMIT_MAX; i++) {
+ m->rlimit[i] = mfree(m->rlimit[i]);
+
+ if (!default_rlimit[i])
+ continue;
+
+ m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
+ if (!m->rlimit[i])
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void manager_recheck_journal(Manager *m) {
+ Unit *u;
+
+ assert(m);
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return;
+
+ u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
+ if (u && SOCKET(u)->state != SOCKET_RUNNING) {
+ log_close_journal();
+ return;
+ }
+
+ u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
+ if (u && SERVICE(u)->state != SERVICE_RUNNING) {
+ log_close_journal();
+ return;
+ }
+
+ /* Hmm, OK, so the socket is fully up and the service is up
+ * too, then let's make use of the thing. */
+ log_open();
+}
+
+void manager_set_show_status(Manager *m, ShowStatus mode) {
+ assert(m);
+ assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return;
+
+ if (m->show_status != mode)
+ log_debug("%s showing of status.",
+ mode == SHOW_STATUS_NO ? "Disabling" : "Enabling");
+ m->show_status = mode;
+
+ if (mode > 0)
+ (void) touch("/run/systemd/show-status");
+ else
+ (void) unlink("/run/systemd/show-status");
+}
+
+static bool manager_get_show_status(Manager *m, StatusType type) {
+ assert(m);
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return false;
+
+ if (m->no_console_output)
+ return false;
+
+ if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
+ return false;
+
+ /* If we cannot find out the status properly, just proceed. */
+ if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
+ return false;
+
+ if (m->show_status > 0)
+ return true;
+
+ return false;
+}
+
+void manager_set_first_boot(Manager *m, bool b) {
+ assert(m);
+
+ if (!MANAGER_IS_SYSTEM(m))
+ return;
+
+ if (m->first_boot != (int) b) {
+ if (b)
+ (void) touch("/run/systemd/first-boot");
+ else
+ (void) unlink("/run/systemd/first-boot");
+ }
+
+ m->first_boot = b;
+}
+
+void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
+ va_list ap;
+
+ /* If m is NULL, assume we're after shutdown and let the messages through. */
+
+ if (m && !manager_get_show_status(m, type))
+ return;
+
+ /* XXX We should totally drop the check for ephemeral here
+ * and thus effectively make 'Type=idle' pointless. */
+ if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
+ return;
+
+ va_start(ap, format);
+ status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
+ va_end(ap);
+}
+
+Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
+ char p[strlen(path)+1];
+
+ assert(m);
+ assert(path);
+
+ strcpy(p, path);
+ path_kill_slashes(p);
+
+ return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
+}
+
+const char *manager_get_runtime_prefix(Manager *m) {
+ assert(m);
+
+ return MANAGER_IS_SYSTEM(m) ?
+ "/run" :
+ getenv("XDG_RUNTIME_DIR");
+}
+
+int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
+ unsigned size;
+ int r;
+
+ assert(m);
+ assert(u->manager == m);
+
+ size = set_size(m->failed_units);
+
+ if (failed) {
+ r = set_ensure_allocated(&m->failed_units, NULL);
+ if (r < 0)
+ return log_oom();
+
+ if (set_put(m->failed_units, u) < 0)
+ return log_oom();
+ } else
+ (void) set_remove(m->failed_units, u);
+
+ if (set_size(m->failed_units) != size)
+ bus_manager_send_change_signal(m);
+
+ return 0;
+}
+
+ManagerState manager_state(Manager *m) {
+ Unit *u;
+
+ assert(m);
+
+ /* Did we ever finish booting? If not then we are still starting up */
+ if (!dual_timestamp_is_set(&m->finish_timestamp)) {
+
+ u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
+ if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
+ return MANAGER_INITIALIZING;
+
+ return MANAGER_STARTING;
+ }
+
+ /* Is the special shutdown target queued? If so, we are in shutdown state */
+ u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
+ if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))
+ return MANAGER_STOPPING;
+
+ /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
+ u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
+ if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
+ (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
+ return MANAGER_MAINTENANCE;
+
+ u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
+ if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
+ (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
+ return MANAGER_MAINTENANCE;
+
+ /* Are there any failed units? If so, we are in degraded mode */
+ if (set_size(m->failed_units) > 0)
+ return MANAGER_DEGRADED;
+
+ return MANAGER_RUNNING;
+}
+
+static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
+ [MANAGER_INITIALIZING] = "initializing",
+ [MANAGER_STARTING] = "starting",
+ [MANAGER_RUNNING] = "running",
+ [MANAGER_DEGRADED] = "degraded",
+ [MANAGER_MAINTENANCE] = "maintenance",
+ [MANAGER_STOPPING] = "stopping",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);