#include <assert.h>
#include <errno.h>
#include <string.h>
-#include <sys/epoll.h>
#include <signal.h>
-#include <sys/signalfd.h>
#include <sys/wait.h>
#include <unistd.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
+#include <sys/timerfd.h>
#ifdef HAVE_AUDIT
#include <libaudit.h>
#endif
-#include <systemd/sd-daemon.h>
+#include "sd-daemon.h"
+#include "sd-id128.h"
+#include "sd-messages.h"
#include "manager.h"
+#include "transaction.h"
#include "hashmap.h"
#include "macro.h"
#include "strv.h"
#include "util.h"
#include "mkdir.h"
#include "ratelimit.h"
-#include "cgroup.h"
+#include "locale-setup.h"
#include "mount-setup.h"
#include "unit-name.h"
-#include "dbus-unit.h"
-#include "dbus-job.h"
#include "missing.h"
#include "path-lookup.h"
#include "special.h"
-#include "bus-errors.h"
#include "exit-status.h"
#include "virt.h"
#include "watchdog.h"
-
-/* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
-#define GC_QUEUE_ENTRIES_MAX 16
+#include "cgroup-util.h"
+#include "path-util.h"
+#include "audit-fd.h"
+#include "boot-timestamps.h"
+#include "env-util.h"
+#include "bus-errors.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "dbus.h"
+#include "dbus-unit.h"
+#include "dbus-job.h"
+#include "dbus-manager.h"
+#include "bus-kernel.h"
/* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
#define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
-/* Where clients shall send notification messages to */
-#define NOTIFY_SOCKET_SYSTEM "/run/systemd/notify"
-#define NOTIFY_SOCKET_USER "@/org/freedesktop/systemd1/notify"
+/* 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_setup_notify(Manager *m) {
- union {
- struct sockaddr sa;
- struct sockaddr_un un;
- } sa;
- struct epoll_event ev;
- int one = 1, r;
- mode_t u;
+#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+
+static int manager_dispatch_notify_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_watch_jobs_in_progress(Manager *m) {
+ usec_t next;
assert(m);
- m->notify_watch.type = WATCH_NOTIFY;
- if ((m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
- log_error("Failed to allocate notification socket: %m");
- return -errno;
+ if (m->jobs_in_progress_event_source)
+ return 0;
+
+ next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
+ return sd_event_add_time(
+ m->event,
+ &m->jobs_in_progress_event_source,
+ CLOCK_MONOTONIC,
+ next, 0,
+ manager_dispatch_jobs_in_progress, m);
+}
+
+#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-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_ON);
+ *p++ = '*';
+ }
+
+ if (pos > 0 && pos <= width) {
+ p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
+ *p++ = '*';
}
- zero(sa);
- sa.sa.sa_family = AF_UNIX;
+ p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
+
+ if (pos < width) {
+ p = stpcpy(p, ANSI_RED_ON);
+ *p++ = '*';
+ if (pos < width-1)
+ p = mempset(p, ' ', width-1-pos);
+ strcpy(p, ANSI_HIGHLIGHT_OFF);
+ }
+}
+
+void manager_flip_auto_status(Manager *m, bool enable) {
+ assert(m);
- if (getpid() != 1)
- snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET_USER "/%llu", random_ull());
- else {
- unlink(NOTIFY_SOCKET_SYSTEM);
- strncpy(sa.un.sun_path, NOTIFY_SOCKET_SYSTEM, sizeof(sa.un.sun_path));
+ 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);
- if (sa.un.sun_path[0] == '@')
- sa.un.sun_path[0] = 0;
+ manager_flip_auto_status(m, true);
- u = umask(0111);
- r = bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1));
- umask(u);
+ 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, true, 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 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) {
- log_error("bind() failed: %m");
- return -errno;
+ log_error("Failed to watch idle pipe: %s", strerror(-r));
+ return r;
}
- if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
- log_error("SO_PASSCRED failed: %m");
- return -errno;
- }
+ return 0;
+}
+
+static void manager_close_idle_pipe(Manager *m) {
+ assert(m);
+
+ 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,
+ };
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.ptr = &m->notify_watch;
+ assert(m);
+ assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
+
+ /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
+ * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0)
+ m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
+ if (m->time_change_fd < 0) {
+ log_error("Failed to create timerfd: %m");
return -errno;
+ }
- if (sa.un.sun_path[0] == 0)
- sa.un.sun_path[0] = '@';
+ if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
+ log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
+ m->time_change_fd = safe_close(m->time_change_fd);
+ return 0;
+ }
- if (!(m->notify_socket = strdup(sa.un.sun_path)))
- return -ENOMEM;
+ 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) {
+ log_error("Failed to create time change event source: %s", strerror(-r));
+ return r;
+ }
- log_debug("Using notification socket %s", m->notify_socket);
+ log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
return 0;
}
static int enable_special_signals(Manager *m) {
- int fd;
+ _cleanup_close_ int fd = -1;
assert(m);
/* Enable that we get SIGINT on control-alt-del. In containers
- * this will fail with EPERM, so ignore that. */
- if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM)
+ * this will fail with EPERM (older) or EINVAL (newer), so
+ * ignore that. */
+ if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
log_warning("Failed to enable ctrl-alt-del handling: %m");
fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
} else {
/* Enable that we get SIGWINCH on kbrequest */
if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
- log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
-
- close_nointr_nofail(fd);
+ log_warning("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;
- struct epoll_event ev;
- struct sigaction sa;
+ int r;
assert(m);
/* We are not interested in SIGSTOP and friends. */
- zero(sa);
- sa.sa_handler = SIG_DFL;
- sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
assert_se(sigemptyset(&mask) == 0);
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) */
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 */
-1);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
- m->signal_watch.type = WATCH_SIGNAL;
- if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0)
+ m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
+ if (m->signal_fd < 0)
return -errno;
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.ptr = &m->signal_watch;
+ 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;
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
- return -errno;
+ /* Process signals a bit earlier than the rest of things, but
+ * later that notify_fd processing, so that the notify
+ * processing can still figure out to which process/service a
+ * message belongs, before we reap the process. */
+ r = sd_event_source_set_priority(m->signal_event_source, -5);
+ if (r < 0)
+ return r;
- if (m->running_as == MANAGER_SYSTEM)
+ if (m->running_as == SYSTEMD_SYSTEM)
return enable_special_signals(m);
return 0;
}
-static void manager_strip_environment(Manager *m) {
+static void manager_clean_environment(Manager *m) {
assert(m);
- /* Remove variables from the inherited set that are part of
- * the container interface:
- * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
- strv_remove_prefix(m->environment, "container=");
- strv_remove_prefix(m->environment, "container_");
+ /* 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",
+ "WATCHDOG_PID",
+ "WATCHDOG_USEC",
+ NULL);
+}
+
+static int manager_default_environment(Manager *m) {
+ assert(m);
+
+ if (m->running_as == SYSTEMD_SYSTEM) {
+ /* 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);
- /* Remove variables from the inherited set that are part of
- * the initrd interface:
- * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
- strv_remove_prefix(m->environment, "RD_");
+ return 0;
}
-int manager_new(ManagerRunningAs running_as, Manager **_m) {
+int manager_new(SystemdRunningAs running_as, Manager **_m) {
Manager *m;
- int r = -ENOMEM;
+ int r;
assert(_m);
assert(running_as >= 0);
- assert(running_as < _MANAGER_RUNNING_AS_MAX);
+ assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
- if (!(m = new0(Manager, 1)))
+ m = new0(Manager, 1);
+ if (!m)
return -ENOMEM;
- dual_timestamp_get(&m->startup_timestamp);
+#ifdef ENABLE_EFI
+ if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
+ boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
+#endif
m->running_as = running_as;
- m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
m->exit_code = _MANAGER_EXIT_CODE_INVALID;
- m->pin_cgroupfs_fd = -1;
+ m->default_timer_accuracy_usec = USEC_PER_MINUTE;
-#ifdef HAVE_AUDIT
- m->audit_fd = -1;
-#endif
+ m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
- m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = m->dev_autofs_fd = m->swap_watch.fd = -1;
+ m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
- m->environment = strv_copy(environ);
- if (!m->environment)
+ r = manager_default_environment(m);
+ if (r < 0)
goto fail;
- manager_strip_environment(m);
+ r = hashmap_ensure_allocated(&m->units, string_hash_func, string_compare_func);
+ if (r < 0)
+ goto fail;
- if (running_as == MANAGER_SYSTEM) {
- m->default_controllers = strv_new("cpu", NULL);
- if (!m->default_controllers)
- goto fail;
- }
+ r = hashmap_ensure_allocated(&m->jobs, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ goto fail;
- if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
+ r = hashmap_ensure_allocated(&m->cgroup_unit, string_hash_func, string_compare_func);
+ if (r < 0)
goto fail;
- if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
+ r = hashmap_ensure_allocated(&m->watch_bus, string_hash_func, string_compare_func);
+ if (r < 0)
goto fail;
- if (!(m->transaction_jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
+ r = set_ensure_allocated(&m->startup_units, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
goto fail;
- if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
+ r = set_ensure_allocated(&m->failed_units, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
goto fail;
- if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
+ r = sd_event_default(&m->event);
+ if (r < 0)
goto fail;
- if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
+ r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
+ if (r < 0)
goto fail;
- if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
+ r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
+ if (r < 0)
goto fail;
- if ((r = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0)
+ r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
+ if (r < 0)
goto fail;
- if ((r = manager_setup_signals(m)) < 0)
+ r = manager_setup_signals(m);
+ if (r < 0)
goto fail;
- if ((r = manager_setup_cgroup(m)) < 0)
+ r = manager_setup_cgroup(m);
+ if (r < 0)
goto fail;
- if ((r = manager_setup_notify(m)) < 0)
+ r = manager_setup_time_change(m);
+ if (r < 0)
goto fail;
- /* Try to connect to the busses, if possible. */
- if ((r = bus_init(m, running_as != MANAGER_SYSTEM)) < 0)
+ m->udev = udev_new();
+ if (!m->udev) {
+ r = -ENOMEM;
goto fail;
+ }
-#ifdef HAVE_AUDIT
- if ((m->audit_fd = audit_open()) < 0 &&
- /* If the kernel lacks netlink or audit support,
- * don't worry about it. */
- errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
- log_error("Failed to connect to audit log: %m");
-#endif
+ /* 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;
return r;
}
+static int manager_setup_notify(Manager *m) {
+ int r;
+
+ if (m->notify_fd < 0) {
+ _cleanup_close_ int fd = -1;
+ union {
+ struct sockaddr sa;
+ struct sockaddr_un un;
+ } sa = {
+ .sa.sa_family = AF_UNIX,
+ };
+ int one = 1;
+
+ /* First free all secondary fields */
+ free(m->notify_socket);
+ m->notify_socket = NULL;
+ 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) {
+ log_error("Failed to allocate notification socket: %m");
+ return -errno;
+ }
+
+ if (m->running_as == SYSTEMD_SYSTEM)
+ m->notify_socket = strdup("/run/systemd/notify");
+ else {
+ const char *e;
+
+ e = getenv("XDG_RUNTIME_DIR");
+ if (!e) {
+ log_error("XDG_RUNTIME_DIR is not set: %m");
+ return -EINVAL;
+ }
+
+ m->notify_socket = strappend(e, "/systemd/notify");
+ }
+ if (!m->notify_socket)
+ return log_oom();
+
+ strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
+ r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
+ if (r < 0) {
+ log_error("bind() failed: %m");
+ return -errno;
+ }
+
+ r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
+ if (r < 0) {
+ log_error("SO_PASSCRED failed: %m");
+ return -errno;
+ }
+
+ 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) {
+ log_error("Failed to allocate notify event source: %s", strerror(-r));
+ return -errno;
+ }
+
+ /* Process signals 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, -7);
+ if (r < 0) {
+ log_error("Failed to set priority of notify event source: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int manager_setup_kdbus(Manager *m) {
+#ifdef ENABLE_KDBUS
+ _cleanup_free_ char *p = NULL;
+#endif
+
+#ifdef ENABLE_KDBUS
+ assert(m);
+
+ if (m->kdbus_fd >= 0)
+ return 0;
+
+ m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p);
+ if (m->kdbus_fd < 0) {
+ log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
+ return m->kdbus_fd;
+ }
+
+ log_debug("Successfully set up kdbus on %s", p);
+
+ /* Create the namespace directory here, so that the contents
+ * of that directory is not visible to non-root users. This is
+ * necessary to ensure that users cannot get access to busses
+ * of virtualized users when no UID namespacing is used. */
+ if (m->running_as == SYSTEMD_SYSTEM)
+ mkdir_p_label("/dev/kdbus/domain", 0700);
+#endif
+
+ return 0;
+}
+
+static int manager_connect_bus(Manager *m, bool reexecuting) {
+ bool try_bus_connect;
+
+ assert(m);
+
+ try_bus_connect =
+ m->kdbus_fd >= 0 ||
+ reexecuting ||
+ (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
+
+ /* Try to connect to the busses, if possible. */
+ return bus_init(m, try_bus_connect);
+}
+
static unsigned manager_dispatch_cleanup_queue(Manager *m) {
Unit *u;
unsigned n = 0;
assert(m);
- if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
- (m->gc_queue_timestamp <= 0 ||
- (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
- return 0;
-
- log_debug("Running GC...");
+ /* log_debug("Running GC..."); */
m->gc_marker += _GC_OFFSET_MAX;
if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
unit_gc_sweep(u, gc_marker);
- LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
+ 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) {
- log_debug("Collecting %s", u->id);
+ log_debug_unit(u->id, "Collecting %s", u->id);
u->gc_marker = gc_marker + GC_OFFSET_BAD;
unit_add_to_cleanup_queue(u);
}
}
m->n_in_gc_queue = 0;
- m->gc_queue_timestamp = 0;
return n;
}
static void manager_clear_jobs_and_units(Manager *m) {
- Job *j;
Unit *u;
assert(m);
- while ((j = hashmap_first(m->transaction_jobs)))
- job_free(j);
-
while ((u = hashmap_first(m->units)))
unit_free(u);
assert(!m->cleanup_queue);
assert(!m->gc_queue);
- assert(hashmap_isempty(m->transaction_jobs));
assert(hashmap_isempty(m->jobs));
assert(hashmap_isempty(m->units));
+
+ m->n_on_console = 0;
+ m->n_running_jobs = 0;
}
void manager_free(Manager *m) {
UnitType c;
+ int i;
assert(m);
hashmap_free(m->units);
hashmap_free(m->jobs);
- hashmap_free(m->transaction_jobs);
- hashmap_free(m->watch_pids);
+ hashmap_free(m->watch_pids1);
+ hashmap_free(m->watch_pids2);
hashmap_free(m->watch_bus);
- if (m->epoll_fd >= 0)
- close_nointr_nofail(m->epoll_fd);
- if (m->signal_watch.fd >= 0)
- close_nointr_nofail(m->signal_watch.fd);
- if (m->notify_watch.fd >= 0)
- close_nointr_nofail(m->notify_watch.fd);
+ set_free(m->startup_units);
+ set_free(m->failed_units);
-#ifdef HAVE_AUDIT
- if (m->audit_fd >= 0)
- audit_close(m->audit_fd);
-#endif
+ sd_event_source_unref(m->signal_event_source);
+ sd_event_source_unref(m->notify_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->idle_pipe_event_source);
+ sd_event_source_unref(m->run_queue_event_source);
+
+ safe_close(m->signal_fd);
+ safe_close(m->notify_fd);
+ safe_close(m->time_change_fd);
+ safe_close(m->kdbus_fd);
+
+ 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);
- strv_free(m->default_controllers);
-
- hashmap_free(m->cgroup_bondings);
+ 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++)
+ free(m->rlimit[i]);
+
+ assert(hashmap_isempty(m->units_requiring_mounts_for));
+ hashmap_free(m->units_requiring_mounts_for);
+
free(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_vtable[c]->enumerate)
- if ((q = unit_vtable[c]->enumerate(m)) < 0)
+ if (unit_vtable[c]->enumerate) {
+ q = unit_vtable[c]->enumerate(m);
+ if (q < 0)
r = q;
+ }
manager_dispatch_load_queue(m);
return r;
}
-int manager_coldplug(Manager *m) {
- int r = 0, q;
+static int manager_coldplug(Manager *m) {
+ int r = 0;
Iterator i;
Unit *u;
char *k;
/* Then, let's set up their initial state. */
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
+ int q;
/* ignore aliases */
if (u->id != k)
continue;
- if ((q = unit_coldplug(u)) < 0)
+ q = unit_coldplug(u);
+ if (q < 0)
r = q;
}
static void manager_build_unit_path_cache(Manager *m) {
char **i;
- DIR *d = NULL;
+ _cleanup_free_ DIR *d = NULL;
int r;
assert(m);
set_free_free(m->unit_path_cache);
- if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) {
+ m->unit_path_cache = set_new(string_hash_func, string_compare_func);
+ if (!m->unit_path_cache) {
log_error("Failed to allocate unit path cache.");
return;
}
STRV_FOREACH(i, m->lookup_paths.unit_path) {
struct dirent *de;
- if (!(d = opendir(*i))) {
- log_error("Failed to open directory: %m");
+ d = opendir(*i);
+ if (!d) {
+ if (errno != ENOENT)
+ log_error("Failed to open directory %s: %m", *i);
continue;
}
if (ignore_file(de->d_name))
continue;
- p = join(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
+ p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
if (!p) {
r = -ENOMEM;
goto fail;
}
- if ((r = set_put(m->unit_path_cache, p)) < 0) {
- free(p);
+ r = set_consume(m->unit_path_cache, p);
+ if (r < 0)
goto fail;
- }
}
closedir(d);
set_free_free(m->unit_path_cache);
m->unit_path_cache = NULL;
+}
- if (d)
- closedir(d);
+
+static int manager_distribute_fds(Manager *m, FDSet *fds) {
+ Unit *u;
+ Iterator i;
+ int r;
+
+ assert(m);
+
+ HASHMAP_FOREACH(u, m->units, i) {
+
+ if (fdset_size(fds) <= 0)
+ break;
+
+ if (UNIT_VTABLE(u)->distribute_fds) {
+ r = UNIT_VTABLE(u)->distribute_fds(u, fds);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
}
int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
assert(m);
+ dual_timestamp_get(&m->generators_start_timestamp);
manager_run_generators(m);
+ dual_timestamp_get(&m->generators_finish_timestamp);
+
+ r = lookup_paths_init(
+ &m->lookup_paths, m->running_as, true,
+ NULL,
+ m->generator_unit_path,
+ m->generator_unit_path_early,
+ m->generator_unit_path_late);
+ if (r < 0)
+ return r;
manager_build_unit_path_cache(m);
m->n_reloading ++;
/* First, enumerate what we can from all config files */
+ dual_timestamp_get(&m->units_load_start_timestamp);
r = manager_enumerate(m);
+ dual_timestamp_get(&m->units_load_finish_timestamp);
/* Second, deserialize if there is something to deserialize */
- if (serialization)
- if ((q = manager_deserialize(m, serialization, fds)) < 0)
+ if (serialization) {
+ q = manager_deserialize(m, serialization, fds);
+ if (q < 0)
+ r = q;
+ }
+
+ /* 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. */
+ if (fdset_size(fds) > 0) {
+ q = manager_distribute_fds(m, fds);
+ if (q < 0)
r = q;
+ }
+
+ /* We might have deserialized the notify fd, but if we didn't
+ * then let's create the bus now */
+ manager_setup_notify(m);
+
+ /* 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! */
- if ((q = manager_coldplug(m)) < 0)
+ q = manager_coldplug(m);
+ if (q < 0)
r = q;
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;
}
-static void transaction_delete_job(Manager *m, Job *j, bool delete_dependencies) {
+int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
+ int r;
+ Transaction *tr;
+
assert(m);
- assert(j);
+ assert(type < _JOB_TYPE_MAX);
+ assert(unit);
+ assert(mode < _JOB_MODE_MAX);
+
+ if (mode == JOB_ISOLATE && type != JOB_START) {
+ sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
+ return -EINVAL;
+ }
- /* Deletes one job from the transaction */
+ if (mode == JOB_ISOLATE && !unit->allow_isolate) {
+ sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
+ return -EPERM;
+ }
- manager_transaction_unlink_job(m, j, delete_dependencies);
+ log_debug_unit(unit->id,
+ "Trying to enqueue job %s/%s/%s", unit->id,
+ job_type_to_string(type), job_mode_to_string(mode));
- if (!j->installed)
- job_free(j);
-}
+ job_type_collapse(&type, unit);
-static void transaction_delete_unit(Manager *m, Unit *u) {
- Job *j;
+ tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
+ if (!tr)
+ return -ENOMEM;
- /* Deletes all jobs associated with a certain unit from the
- * transaction */
+ r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
+ mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
+ mode == JOB_IGNORE_DEPENDENCIES, e);
+ if (r < 0)
+ goto tr_abort;
- while ((j = hashmap_get(m->transaction_jobs, u)))
- transaction_delete_job(m, j, true);
-}
+ if (mode == JOB_ISOLATE) {
+ r = transaction_add_isolate_jobs(tr, m);
+ if (r < 0)
+ goto tr_abort;
+ }
-static void transaction_clean_dependencies(Manager *m) {
- Iterator i;
- Job *j;
+ r = transaction_activate(tr, m, mode, e);
+ if (r < 0)
+ goto tr_abort;
- assert(m);
+ log_debug_unit(unit->id,
+ "Enqueued job %s/%s as %u", unit->id,
+ job_type_to_string(type), (unsigned) tr->anchor_job->id);
- /* Drops all dependencies of all installed jobs */
+ if (_ret)
+ *_ret = tr->anchor_job;
- HASHMAP_FOREACH(j, m->jobs, i) {
- while (j->subject_list)
- job_dependency_free(j->subject_list);
- while (j->object_list)
- job_dependency_free(j->object_list);
- }
+ transaction_free(tr);
+ return 0;
- assert(!m->transaction_anchor);
+tr_abort:
+ transaction_abort(tr);
+ transaction_free(tr);
+ return r;
}
-static void transaction_abort(Manager *m) {
- Job *j;
+int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
+ Unit *unit;
+ int r;
assert(m);
+ assert(type < _JOB_TYPE_MAX);
+ assert(name);
+ assert(mode < _JOB_MODE_MAX);
- while ((j = hashmap_first(m->transaction_jobs)))
- if (j->installed)
- transaction_delete_job(m, j, true);
- else
- job_free(j);
-
- assert(hashmap_isempty(m->transaction_jobs));
+ r = manager_load_unit(m, name, NULL, NULL, &unit);
+ if (r < 0)
+ return r;
- transaction_clean_dependencies(m);
+ return manager_add_job(m, type, unit, mode, override, e, _ret);
}
-static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) {
- JobDependency *l;
-
+Job *manager_get_job(Manager *m, uint32_t id) {
assert(m);
- /* A recursive sweep through the graph that marks all units
- * that matter to the anchor job, i.e. are directly or
- * indirectly a dependency of the anchor job via paths that
- * are fully marked as mattering. */
-
- if (j)
- l = j->subject_list;
- else
- l = m->transaction_anchor;
-
- LIST_FOREACH(subject, l, l) {
-
- /* This link does not matter */
- if (!l->matters)
- continue;
-
- /* This unit has already been marked */
- if (l->object->generation == generation)
- continue;
-
- l->object->matters_to_anchor = true;
- l->object->generation = generation;
-
- transaction_find_jobs_that_matter_to_anchor(m, l->object, generation);
- }
-}
-
-static void transaction_merge_and_delete_job(Manager *m, Job *j, Job *other, JobType t) {
- JobDependency *l, *last;
-
- assert(j);
- assert(other);
- assert(j->unit == other->unit);
- assert(!j->installed);
-
- /* Merges 'other' into 'j' and then deletes j. */
-
- j->type = t;
- j->state = JOB_WAITING;
- j->override = j->override || other->override;
-
- j->matters_to_anchor = j->matters_to_anchor || other->matters_to_anchor;
-
- /* Patch us in as new owner of the JobDependency objects */
- last = NULL;
- LIST_FOREACH(subject, l, other->subject_list) {
- assert(l->subject == other);
- l->subject = j;
- last = l;
- }
-
- /* Merge both lists */
- if (last) {
- last->subject_next = j->subject_list;
- if (j->subject_list)
- j->subject_list->subject_prev = last;
- j->subject_list = other->subject_list;
- }
-
- /* Patch us in as new owner of the JobDependency objects */
- last = NULL;
- LIST_FOREACH(object, l, other->object_list) {
- assert(l->object == other);
- l->object = j;
- last = l;
- }
-
- /* Merge both lists */
- if (last) {
- last->object_next = j->object_list;
- if (j->object_list)
- j->object_list->object_prev = last;
- j->object_list = other->object_list;
- }
-
- /* Kill the other job */
- other->subject_list = NULL;
- other->object_list = NULL;
- transaction_delete_job(m, other, true);
-}
-static bool job_is_conflicted_by(Job *j) {
- JobDependency *l;
-
- assert(j);
-
- /* Returns true if this job is pulled in by a least one
- * ConflictedBy dependency. */
-
- LIST_FOREACH(object, l, j->object_list)
- if (l->conflicts)
- return true;
-
- return false;
-}
-
-static int delete_one_unmergeable_job(Manager *m, Job *j) {
- Job *k;
-
- assert(j);
-
- /* Tries to delete one item in the linked list
- * j->transaction_next->transaction_next->... that conflicts
- * with another one, in an attempt to make an inconsistent
- * transaction work. */
-
- /* We rely here on the fact that if a merged with b does not
- * merge with c, either a or b merge with c neither */
- LIST_FOREACH(transaction, j, j)
- LIST_FOREACH(transaction, k, j->transaction_next) {
- Job *d;
-
- /* Is this one mergeable? Then skip it */
- if (job_type_is_mergeable(j->type, k->type))
- continue;
-
- /* Ok, we found two that conflict, let's see if we can
- * drop one of them */
- if (!j->matters_to_anchor && !k->matters_to_anchor) {
-
- /* Both jobs don't matter, so let's
- * find the one that is smarter to
- * remove. Let's think positive and
- * rather remove stops then starts --
- * except if something is being
- * stopped because it is conflicted by
- * another unit in which case we
- * rather remove the start. */
-
- log_debug("Looking at job %s/%s conflicted_by=%s", j->unit->id, job_type_to_string(j->type), yes_no(j->type == JOB_STOP && job_is_conflicted_by(j)));
- log_debug("Looking at job %s/%s conflicted_by=%s", k->unit->id, job_type_to_string(k->type), yes_no(k->type == JOB_STOP && job_is_conflicted_by(k)));
-
- if (j->type == JOB_STOP) {
-
- if (job_is_conflicted_by(j))
- d = k;
- else
- d = j;
-
- } else if (k->type == JOB_STOP) {
-
- if (job_is_conflicted_by(k))
- d = j;
- else
- d = k;
- } else
- d = j;
-
- } else if (!j->matters_to_anchor)
- d = j;
- else if (!k->matters_to_anchor)
- d = k;
- else
- return -ENOEXEC;
-
- /* Ok, we can drop one, so let's do so. */
- log_debug("Fixing conflicting jobs by deleting job %s/%s", d->unit->id, job_type_to_string(d->type));
- transaction_delete_job(m, d, true);
- return 0;
- }
-
- return -EINVAL;
-}
-
-static int transaction_merge_jobs(Manager *m, DBusError *e) {
- Job *j;
- Iterator i;
- int r;
-
- assert(m);
-
- /* First step, check whether any of the jobs for one specific
- * task conflict. If so, try to drop one of them. */
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- JobType t;
- Job *k;
-
- t = j->type;
- LIST_FOREACH(transaction, k, j->transaction_next) {
- if (job_type_merge(&t, k->type) >= 0)
- continue;
-
- /* OK, we could not merge all jobs for this
- * action. Let's see if we can get rid of one
- * of them */
-
- if ((r = delete_one_unmergeable_job(m, j)) >= 0)
- /* Ok, we managed to drop one, now
- * let's ask our callers to call us
- * again after garbage collecting */
- return -EAGAIN;
-
- /* We couldn't merge anything. Failure */
- dbus_set_error(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.",
- job_type_to_string(t), job_type_to_string(k->type), k->unit->id);
- return r;
- }
- }
-
- /* Second step, merge the jobs. */
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- JobType t = j->type;
- Job *k;
-
- /* Merge all transactions */
- LIST_FOREACH(transaction, k, j->transaction_next)
- assert_se(job_type_merge(&t, k->type) == 0);
-
- /* If an active job is mergeable, merge it too */
- if (j->unit->job)
- job_type_merge(&t, j->unit->job->type); /* Might fail. Which is OK */
-
- while ((k = j->transaction_next)) {
- if (j->installed) {
- transaction_merge_and_delete_job(m, k, j, t);
- j = k;
- } else
- transaction_merge_and_delete_job(m, j, k, t);
- }
-
- if (j->unit->job && !j->installed)
- transaction_merge_and_delete_job(m, j, j->unit->job, t);
-
- assert(!j->transaction_next);
- assert(!j->transaction_prev);
- }
-
- return 0;
-}
-
-static void transaction_drop_redundant(Manager *m) {
- bool again;
-
- assert(m);
-
- /* Goes through the transaction and removes all jobs that are
- * a noop */
-
- do {
- Job *j;
- Iterator i;
-
- again = false;
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- bool changes_something = false;
- Job *k;
-
- LIST_FOREACH(transaction, k, j) {
-
- if (!job_is_anchor(k) &&
- (k->installed || job_type_is_redundant(k->type, unit_active_state(k->unit))) &&
- (!k->unit->job || !job_type_is_conflicting(k->type, k->unit->job->type)))
- continue;
-
- changes_something = true;
- break;
- }
-
- if (changes_something)
- continue;
-
- /* log_debug("Found redundant job %s/%s, dropping.", j->unit->id, job_type_to_string(j->type)); */
- transaction_delete_job(m, j, false);
- again = true;
- break;
- }
-
- } while (again);
-}
-
-static bool unit_matters_to_anchor(Unit *u, Job *j) {
- assert(u);
- assert(!j->transaction_prev);
-
- /* Checks whether at least one of the jobs for this unit
- * matters to the anchor. */
-
- LIST_FOREACH(transaction, j, j)
- if (j->matters_to_anchor)
- return true;
-
- return false;
-}
-
-static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation, DBusError *e) {
- Iterator i;
- Unit *u;
- int r;
-
- assert(m);
- assert(j);
- assert(!j->transaction_prev);
-
- /* Does a recursive sweep through the ordering graph, looking
- * for a cycle. If we find cycle we try to break it. */
-
- /* Have we seen this before? */
- if (j->generation == generation) {
- Job *k, *delete;
-
- /* If the marker is NULL we have been here already and
- * decided the job was loop-free from here. Hence
- * shortcut things and return right-away. */
- if (!j->marker)
- return 0;
-
- /* So, the marker is not NULL and we already have been
- * here. We have a cycle. Let's try to break it. We go
- * backwards in our path and try to find a suitable
- * job to remove. We use the marker to find our way
- * back, since smart how we are we stored our way back
- * in there. */
- log_warning("Found ordering cycle on %s/%s", j->unit->id, job_type_to_string(j->type));
-
- delete = NULL;
- for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) {
-
- log_info("Walked on cycle path to %s/%s", k->unit->id, job_type_to_string(k->type));
-
- if (!delete &&
- !k->installed &&
- !unit_matters_to_anchor(k->unit, k)) {
- /* Ok, we can drop this one, so let's
- * do so. */
- delete = k;
- }
-
- /* Check if this in fact was the beginning of
- * the cycle */
- if (k == j)
- break;
- }
-
-
- if (delete) {
- log_warning("Breaking ordering cycle by deleting job %s/%s", delete->unit->id, job_type_to_string(delete->type));
- transaction_delete_unit(m, delete->unit);
- return -EAGAIN;
- }
-
- log_error("Unable to break cycle");
-
- dbus_set_error(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, "Transaction order is cyclic. See system logs for details.");
- return -ENOEXEC;
- }
-
- /* Make the marker point to where we come from, so that we can
- * find our way backwards if we want to break a cycle. We use
- * a special marker for the beginning: we point to
- * ourselves. */
- j->marker = from ? from : j;
- j->generation = generation;
-
- /* We assume that the the dependencies are bidirectional, and
- * hence can ignore UNIT_AFTER */
- SET_FOREACH(u, j->unit->dependencies[UNIT_BEFORE], i) {
- Job *o;
-
- /* Is there a job for this unit? */
- if (!(o = hashmap_get(m->transaction_jobs, u)))
-
- /* Ok, there is no job for this in the
- * transaction, but maybe there is already one
- * running? */
- if (!(o = u->job))
- continue;
-
- if ((r = transaction_verify_order_one(m, o, j, generation, e)) < 0)
- return r;
- }
-
- /* Ok, let's backtrack, and remember that this entry is not on
- * our path anymore. */
- j->marker = NULL;
-
- return 0;
-}
-
-static int transaction_verify_order(Manager *m, unsigned *generation, DBusError *e) {
- Job *j;
- int r;
- Iterator i;
- unsigned g;
-
- assert(m);
- assert(generation);
-
- /* Check if the ordering graph is cyclic. If it is, try to fix
- * that up by dropping one of the jobs. */
-
- g = (*generation)++;
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i)
- if ((r = transaction_verify_order_one(m, j, NULL, g, e)) < 0)
- return r;
-
- return 0;
-}
-
-static void transaction_collect_garbage(Manager *m) {
- bool again;
-
- assert(m);
-
- /* Drop jobs that are not required by any other job */
-
- do {
- Iterator i;
- Job *j;
-
- again = false;
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- if (j->object_list) {
- /* log_debug("Keeping job %s/%s because of %s/%s", */
- /* j->unit->id, job_type_to_string(j->type), */
- /* j->object_list->subject ? j->object_list->subject->unit->id : "root", */
- /* j->object_list->subject ? job_type_to_string(j->object_list->subject->type) : "root"); */
- continue;
- }
-
- /* log_debug("Garbage collecting job %s/%s", j->unit->id, job_type_to_string(j->type)); */
- transaction_delete_job(m, j, true);
- again = true;
- break;
- }
-
- } while (again);
-}
-
-static int transaction_is_destructive(Manager *m, DBusError *e) {
- Iterator i;
- Job *j;
-
- assert(m);
-
- /* Checks whether applying this transaction means that
- * existing jobs would be replaced */
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
-
- /* Assume merged */
- assert(!j->transaction_prev);
- assert(!j->transaction_next);
-
- if (j->unit->job &&
- j->unit->job != j &&
- !job_type_is_superset(j->type, j->unit->job->type)) {
-
- dbus_set_error(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive.");
- return -EEXIST;
- }
- }
-
- return 0;
-}
-
-static void transaction_minimize_impact(Manager *m) {
- bool again;
- assert(m);
-
- /* Drops all unnecessary jobs that reverse already active jobs
- * or that stop a running service. */
-
- do {
- Job *j;
- Iterator i;
-
- again = false;
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- LIST_FOREACH(transaction, j, j) {
- bool stops_running_service, changes_existing_job;
-
- /* If it matters, we shouldn't drop it */
- if (j->matters_to_anchor)
- continue;
-
- /* Would this stop a running service?
- * Would this change an existing job?
- * If so, let's drop this entry */
-
- stops_running_service =
- j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit));
-
- changes_existing_job =
- j->unit->job &&
- job_type_is_conflicting(j->type, j->unit->job->type);
-
- if (!stops_running_service && !changes_existing_job)
- continue;
-
- if (stops_running_service)
- log_debug("%s/%s would stop a running service.", j->unit->id, job_type_to_string(j->type));
-
- if (changes_existing_job)
- log_debug("%s/%s would change existing job.", j->unit->id, job_type_to_string(j->type));
-
- /* Ok, let's get rid of this */
- log_debug("Deleting %s/%s to minimize impact.", j->unit->id, job_type_to_string(j->type));
-
- transaction_delete_job(m, j, true);
- again = true;
- break;
- }
-
- if (again)
- break;
- }
-
- } while (again);
-}
-
-static int transaction_apply(Manager *m, JobMode mode) {
- Iterator i;
- Job *j;
- int r;
-
- /* Moves the transaction jobs to the set of active jobs */
-
- if (mode == JOB_ISOLATE) {
-
- /* When isolating first kill all installed jobs which
- * aren't part of the new transaction */
- rescan:
- HASHMAP_FOREACH(j, m->jobs, i) {
- assert(j->installed);
-
- if (hashmap_get(m->transaction_jobs, j->unit))
- continue;
-
- /* 'j' itself is safe to remove, but if other jobs
- are invalidated recursively, our iterator may become
- invalid and we need to start over. */
- if (job_finish_and_invalidate(j, JOB_CANCELED) > 0)
- goto rescan;
- }
- }
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- /* Assume merged */
- assert(!j->transaction_prev);
- assert(!j->transaction_next);
-
- if (j->installed)
- continue;
-
- if ((r = hashmap_put(m->jobs, UINT32_TO_PTR(j->id), j)) < 0)
- goto rollback;
- }
-
- while ((j = hashmap_steal_first(m->transaction_jobs))) {
- if (j->installed) {
- /* log_debug("Skipping already installed job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id); */
- continue;
- }
-
- if (j->unit->job)
- job_free(j->unit->job);
-
- j->unit->job = j;
- j->installed = true;
- m->n_installed_jobs ++;
-
- /* We're fully installed. Now let's free data we don't
- * need anymore. */
-
- assert(!j->transaction_next);
- assert(!j->transaction_prev);
-
- job_add_to_run_queue(j);
- job_add_to_dbus_queue(j);
- job_start_timer(j);
-
- log_debug("Installed new job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
- }
-
- /* As last step, kill all remaining job dependencies. */
- transaction_clean_dependencies(m);
-
- return 0;
-
-rollback:
-
- HASHMAP_FOREACH(j, m->transaction_jobs, i) {
- if (j->installed)
- continue;
-
- hashmap_remove(m->jobs, UINT32_TO_PTR(j->id));
- }
-
- return r;
-}
-
-static int transaction_activate(Manager *m, JobMode mode, DBusError *e) {
- int r;
- unsigned generation = 1;
-
- assert(m);
-
- /* This applies the changes recorded in transaction_jobs to
- * the actual list of jobs, if possible. */
-
- /* First step: figure out which jobs matter */
- transaction_find_jobs_that_matter_to_anchor(m, NULL, generation++);
-
- /* Second step: Try not to stop any running services if
- * we don't have to. Don't try to reverse running
- * jobs if we don't have to. */
- if (mode == JOB_FAIL)
- transaction_minimize_impact(m);
-
- /* Third step: Drop redundant jobs */
- transaction_drop_redundant(m);
-
- for (;;) {
- /* Fourth step: Let's remove unneeded jobs that might
- * be lurking. */
- if (mode != JOB_ISOLATE)
- transaction_collect_garbage(m);
-
- /* Fifth step: verify order makes sense and correct
- * cycles if necessary and possible */
- if ((r = transaction_verify_order(m, &generation, e)) >= 0)
- break;
-
- if (r != -EAGAIN) {
- log_warning("Requested transaction contains an unfixable cyclic ordering dependency: %s", bus_error(e, r));
- goto rollback;
- }
-
- /* Let's see if the resulting transaction ordering
- * graph is still cyclic... */
- }
-
- for (;;) {
- /* Sixth step: let's drop unmergeable entries if
- * necessary and possible, merge entries we can
- * merge */
- if ((r = transaction_merge_jobs(m, e)) >= 0)
- break;
-
- if (r != -EAGAIN) {
- log_warning("Requested transaction contains unmergeable jobs: %s", bus_error(e, r));
- goto rollback;
- }
-
- /* Seventh step: an entry got dropped, let's garbage
- * collect its dependencies. */
- if (mode != JOB_ISOLATE)
- transaction_collect_garbage(m);
-
- /* Let's see if the resulting transaction still has
- * unmergeable entries ... */
- }
-
- /* Eights step: Drop redundant jobs again, if the merging now allows us to drop more. */
- transaction_drop_redundant(m);
-
- /* Ninth step: check whether we can actually apply this */
- if (mode == JOB_FAIL)
- if ((r = transaction_is_destructive(m, e)) < 0) {
- log_notice("Requested transaction contradicts existing jobs: %s", bus_error(e, r));
- goto rollback;
- }
-
- /* Tenth step: apply changes */
- if ((r = transaction_apply(m, mode)) < 0) {
- log_warning("Failed to apply transaction: %s", strerror(-r));
- goto rollback;
- }
-
- assert(hashmap_isempty(m->transaction_jobs));
- assert(!m->transaction_anchor);
-
- return 0;
-
-rollback:
- transaction_abort(m);
- return r;
-}
-
-static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) {
- Job *j, *f;
-
- assert(m);
- assert(unit);
-
- /* Looks for an existing prospective job and returns that. If
- * it doesn't exist it is created and added to the prospective
- * jobs list. */
-
- f = hashmap_get(m->transaction_jobs, unit);
-
- LIST_FOREACH(transaction, j, f) {
- assert(j->unit == unit);
-
- if (j->type == type) {
- if (is_new)
- *is_new = false;
- return j;
- }
- }
-
- if (unit->job && unit->job->type == type)
- j = unit->job;
- else if (!(j = job_new(m, type, unit)))
- return NULL;
-
- j->generation = 0;
- j->marker = NULL;
- j->matters_to_anchor = false;
- j->override = override;
-
- LIST_PREPEND(Job, transaction, f, j);
-
- if (hashmap_replace(m->transaction_jobs, unit, f) < 0) {
- job_free(j);
- return NULL;
- }
-
- if (is_new)
- *is_new = true;
-
- /* log_debug("Added job %s/%s to transaction.", unit->id, job_type_to_string(type)); */
-
- return j;
-}
-
-void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies) {
- assert(m);
- assert(j);
-
- if (j->transaction_prev)
- j->transaction_prev->transaction_next = j->transaction_next;
- else if (j->transaction_next)
- hashmap_replace(m->transaction_jobs, j->unit, j->transaction_next);
- else
- hashmap_remove_value(m->transaction_jobs, j->unit, j);
-
- if (j->transaction_next)
- j->transaction_next->transaction_prev = j->transaction_prev;
-
- j->transaction_prev = j->transaction_next = NULL;
-
- while (j->subject_list)
- job_dependency_free(j->subject_list);
-
- while (j->object_list) {
- Job *other = j->object_list->matters ? j->object_list->subject : NULL;
-
- job_dependency_free(j->object_list);
-
- if (other && delete_dependencies) {
- log_debug("Deleting job %s/%s as dependency of job %s/%s",
- other->unit->id, job_type_to_string(other->type),
- j->unit->id, job_type_to_string(j->type));
- transaction_delete_job(m, other, delete_dependencies);
- }
- }
-}
-
-static int transaction_add_job_and_dependencies(
- Manager *m,
- JobType type,
- Unit *unit,
- Job *by,
- bool matters,
- bool override,
- bool conflicts,
- bool ignore_requirements,
- bool ignore_order,
- DBusError *e,
- Job **_ret) {
- Job *ret;
- Iterator i;
- Unit *dep;
- int r;
- bool is_new;
-
- assert(m);
- assert(type < _JOB_TYPE_MAX);
- assert(unit);
-
- /* log_debug("Pulling in %s/%s from %s/%s", */
- /* unit->id, job_type_to_string(type), */
- /* by ? by->unit->id : "NA", */
- /* by ? job_type_to_string(by->type) : "NA"); */
-
- if (unit->load_state != UNIT_LOADED &&
- unit->load_state != UNIT_ERROR &&
- unit->load_state != UNIT_MASKED) {
- dbus_set_error(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->id);
- return -EINVAL;
- }
-
- if (type != JOB_STOP && unit->load_state == UNIT_ERROR) {
- dbus_set_error(e, BUS_ERROR_LOAD_FAILED,
- "Unit %s failed to load: %s. "
- "See system logs and 'systemctl status %s' for details.",
- unit->id,
- strerror(-unit->load_error),
- unit->id);
- return -EINVAL;
- }
-
- if (type != JOB_STOP && unit->load_state == UNIT_MASKED) {
- dbus_set_error(e, BUS_ERROR_MASKED, "Unit %s is masked.", unit->id);
- return -EINVAL;
- }
-
- if (!unit_job_is_applicable(unit, type)) {
- dbus_set_error(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, "Job type %s is not applicable for unit %s.", job_type_to_string(type), unit->id);
- return -EBADR;
- }
-
- /* First add the job. */
- if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new)))
- return -ENOMEM;
-
- ret->ignore_order = ret->ignore_order || ignore_order;
-
- /* Then, add a link to the job. */
- if (!job_dependency_new(by, ret, matters, conflicts))
- return -ENOMEM;
-
- if (is_new && !ignore_requirements) {
- Set *following;
-
- /* If we are following some other unit, make sure we
- * add all dependencies of everybody following. */
- if (unit_following_set(ret->unit, &following) > 0) {
- SET_FOREACH(dep, following, i)
- if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) {
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
-
- set_free(following);
- }
-
- /* Finally, recursively add in all dependencies. */
- if (type == JOB_START || type == JOB_RELOAD_OR_START) {
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_BIND_TO], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
-
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) {
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_WANTS], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, false, ignore_order, e, NULL)) < 0) {
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
-
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) {
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTS], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e, NULL)) < 0) {
-
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTED_BY], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) {
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
-
- }
-
- if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRED_BY], i)
- if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
-
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_BOUND_BY], i)
- if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
-
- if (r != -EBADR)
- goto fail;
-
- if (e)
- dbus_error_free(e);
- }
- }
-
- if (type == JOB_RELOAD || type == JOB_RELOAD_OR_START) {
-
- SET_FOREACH(dep, ret->unit->dependencies[UNIT_PROPAGATE_RELOAD_TO], i) {
- r = transaction_add_job_and_dependencies(m, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e, NULL);
-
- if (r < 0) {
- log_warning("Cannot add dependency reload job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
-
- if (e)
- dbus_error_free(e);
- }
- }
- }
-
- /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */
- }
-
- if (_ret)
- *_ret = ret;
-
- return 0;
-
-fail:
- return r;
-}
-
-static int transaction_add_isolate_jobs(Manager *m) {
- Iterator i;
- Unit *u;
- char *k;
- int r;
-
- assert(m);
-
- HASHMAP_FOREACH_KEY(u, k, m->units, i) {
-
- /* ignore aliases */
- if (u->id != k)
- continue;
-
- if (u->ignore_on_isolate)
- continue;
-
- /* No need to stop inactive jobs */
- if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)) && !u->job)
- continue;
-
- /* Is there already something listed for this? */
- if (hashmap_get(m->transaction_jobs, u))
- continue;
-
- if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, false, false, NULL, NULL)) < 0)
- log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->id, strerror(-r));
- }
-
- return 0;
-}
-
-int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
- int r;
- Job *ret;
-
- assert(m);
- assert(type < _JOB_TYPE_MAX);
- assert(unit);
- assert(mode < _JOB_MODE_MAX);
-
- if (mode == JOB_ISOLATE && type != JOB_START) {
- dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
- return -EINVAL;
- }
-
- if (mode == JOB_ISOLATE && !unit->allow_isolate) {
- dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
- return -EPERM;
- }
-
- log_debug("Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
-
- if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false,
- mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
- mode == JOB_IGNORE_DEPENDENCIES, e, &ret)) < 0) {
- transaction_abort(m);
- return r;
- }
-
- if (mode == JOB_ISOLATE)
- if ((r = transaction_add_isolate_jobs(m)) < 0) {
- transaction_abort(m);
- return r;
- }
-
- if ((r = transaction_activate(m, mode, e)) < 0)
- return r;
-
- log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) ret->id);
-
- if (_ret)
- *_ret = ret;
-
- return 0;
-}
-
-int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
- Unit *unit;
- int r;
-
- assert(m);
- assert(type < _JOB_TYPE_MAX);
- assert(name);
- assert(mode < _JOB_MODE_MAX);
-
- if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0)
- return r;
-
- return manager_add_job(m, type, unit, mode, override, e, _ret);
-}
-
-Job *manager_get_job(Manager *m, uint32_t id) {
- assert(m);
-
- return hashmap_get(m->jobs, UINT32_TO_PTR(id));
-}
+ return hashmap_get(m->jobs, UINT32_TO_PTR(id));
+}
Unit *manager_get_unit(Manager *m, const char *name) {
assert(m);
return n;
}
-int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
+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;
/* This will prepare the unit for loading, but not actually
* load anything from disk. */
- if (path && !is_path(path)) {
- dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
- return -EINVAL;
- }
+ 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 = file_name_from_path(path);
+ name = basename(path);
t = unit_name_to_type(name);
- if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid_no_type(name, false)) {
- dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
- return -EINVAL;
- }
+ if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
+ 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) {
}
}
- if ((r = unit_add_name(ret, name)) < 0) {
+ r = unit_add_name(ret, name);
+ if (r < 0) {
unit_free(ret);
return r;
}
return 0;
}
-int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
+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. */
- if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0)
+ r = manager_load_unit_prepare(m, name, path, e, _ret);
+ if (r != 0)
return r;
manager_dispatch_load_queue(m);
assert(m);
- transaction_abort(m);
-
while ((j = hashmap_first(m->jobs)))
- job_finish_and_invalidate(j, JOB_CANCELED);
+ /* No need to recurse. We're cancelling all jobs. */
+ job_finish_and_invalidate(j, JOB_CANCELED, false);
}
-unsigned manager_dispatch_run_queue(Manager *m) {
+static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
+ Manager *m = userdata;
Job *j;
- unsigned n = 0;
- if (m->dispatching_run_queue)
- return 0;
-
- m->dispatching_run_queue = true;
+ assert(source);
+ assert(m);
while ((j = m->run_queue)) {
assert(j->installed);
assert(j->in_run_queue);
job_run_and_invalidate(j);
- n++;
}
- m->dispatching_run_queue = false;
- return n;
+ 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;
}
-unsigned manager_dispatch_dbus_queue(Manager *m) {
+static unsigned manager_dispatch_dbus_queue(Manager *m) {
Job *j;
Unit *u;
unsigned n = 0;
}
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_process_notify_fd(Manager *m) {
+static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
+ _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;
+ }
+
+ log_debug_unit(u->id, "Got notification message for unit %s", u->id);
+
+ if (UNIT_VTABLE(u)->notify_message)
+ UNIT_VTABLE(u)->notify_message(u, pid, tags);
+}
+
+static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
ssize_t n;
assert(m);
+ assert(m->notify_fd == fd);
+
+ if (revents != EPOLLIN) {
+ log_warning("Got unexpected poll event for notify fd.");
+ return 0;
+ }
for (;;) {
char buf[4096];
- struct msghdr msghdr;
- struct iovec iovec;
- struct ucred *ucred;
+ struct iovec iovec = {
+ .iov_base = buf,
+ .iov_len = sizeof(buf)-1,
+ };
+ bool found = false;
+
union {
struct cmsghdr cmsghdr;
uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
- } control;
+ } control = {};
+
+ struct msghdr msghdr = {
+ .msg_iov = &iovec,
+ .msg_iovlen = 1,
+ .msg_control = &control,
+ .msg_controllen = sizeof(control),
+ };
+ struct ucred *ucred;
Unit *u;
- char **tags;
- zero(iovec);
- iovec.iov_base = buf;
- iovec.iov_len = sizeof(buf)-1;
-
- zero(control);
- zero(msghdr);
- msghdr.msg_iov = &iovec;
- msghdr.msg_iovlen = 1;
- msghdr.msg_control = &control;
- msghdr.msg_controllen = sizeof(control);
-
- if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) {
- if (n >= 0)
+ n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
+ if (n <= 0) {
+ if (n == 0)
return -EIO;
if (errno == EAGAIN || errno == EINTR)
ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
- if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid))))
- if (!(u = cgroup_unit_by_pid(m, ucred->pid))) {
- log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
- continue;
- }
-
assert((size_t) n < sizeof(buf));
buf[n] = 0;
- if (!(tags = strv_split(buf, "\n\r")))
- return -ENOMEM;
- log_debug("Got notification message for unit %s", u->id);
+ u = manager_get_unit_by_pid(m, ucred->pid);
+ if (u) {
+ manager_invoke_notify_message(m, u, ucred->pid, buf, n);
+ found = true;
+ }
+
+ u = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
+ if (u) {
+ manager_invoke_notify_message(m, u, ucred->pid, buf, n);
+ found = true;
+ }
- if (UNIT_VTABLE(u)->notify_message)
- UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
+ u = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
+ if (u) {
+ manager_invoke_notify_message(m, u, ucred->pid, buf, n);
+ found = true;
+ }
- strv_free(tags);
+ if (!found)
+ log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
}
return 0;
}
+static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
+ assert(m);
+ assert(u);
+ assert(si);
+
+ log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
+
+ unit_unwatch_pid(u, si->si_pid);
+ 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;
- Unit *u;
- int r;
-
- zero(si);
+ 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
break;
if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
- char *name = NULL;
+ _cleanup_free_ char *name = NULL;
+ Unit *u;
get_process_comm(si.si_pid, &name);
- log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
- free(name);
- }
-
- /* Let's flush any message the dying child might still
- * have queued for us. This ensures that the process
- * still exists in /proc so that we can figure out
- * which cgroup and hence unit it belongs to. */
- if ((r = manager_process_notify_fd(m)) < 0)
- return r;
- /* And now figure out the unit this belongs to */
- if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid))))
- u = cgroup_unit_by_pid(m, si.si_pid);
+ 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... */
+ u = manager_get_unit_by_pid(m, si.si_pid);
+ if (u)
+ invoke_sigchld_event(m, u, &si);
+ u = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
+ if (u)
+ invoke_sigchld_event(m, u, &si);
+ u = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
+ if (u)
+ invoke_sigchld_event(m, u, &si);
+ }
/* And now, we actually reap the zombie. */
if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
return -errno;
}
-
- if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
- continue;
-
- log_debug("Child %lu died (code=%s, status=%i/%s)",
- (long unsigned) si.si_pid,
- 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)));
-
- if (!u)
- continue;
-
- log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
-
- hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
- UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
}
return 0;
}
static int manager_start_target(Manager *m, const char *name, JobMode mode) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
- DBusError error;
-
- dbus_error_init(&error);
- log_debug("Activating special unit %s", name);
+ log_debug_unit(name, "Activating special unit %s", name);
- if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0)
- log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r));
-
- dbus_error_free(&error);
+ r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
+ if (r < 0)
+ log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
return r;
}
-static int manager_process_signal_fd(Manager *m) {
+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;
assert(m);
+ assert(m->signal_fd == fd);
+
+ if (revents != EPOLLIN) {
+ log_warning("Got unexpected events from signal file descriptor.");
+ return 0;
+ }
for (;;) {
- if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) {
+ n = read(m->signal_fd, &sfsi, sizeof(sfsi));
+ if (n != sizeof(sfsi)) {
if (n >= 0)
return -EIO;
return -errno;
}
- if (sfsi.ssi_pid > 0) {
- char *p = NULL;
-
- get_process_comm(sfsi.ssi_pid, &p);
-
- log_debug("Received SIG%s from PID %lu (%s).",
- signal_to_string(sfsi.ssi_signo),
- (unsigned long) sfsi.ssi_pid, strna(p));
- free(p);
- } else
- log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
+ log_received_signal(sfsi.ssi_signo == SIGCHLD ||
+ (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
+ ? LOG_DEBUG : LOG_INFO,
+ &sfsi);
switch (sfsi.ssi_signo) {
break;
case SIGTERM:
- if (m->running_as == MANAGER_SYSTEM) {
+ if (m->running_as == SYSTEMD_SYSTEM) {
/* This is for compatibility with the
* original sysvinit */
m->exit_code = MANAGER_REEXECUTE;
/* Fall through */
case SIGINT:
- if (m->running_as == MANAGER_SYSTEM) {
- manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
+ if (m->running_as == SYSTEMD_SYSTEM) {
+ manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
break;
}
break;
case SIGWINCH:
- if (m->running_as == MANAGER_SYSTEM)
+ if (m->running_as == SYSTEMD_SYSTEM)
manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
/* This is a nop on non-init */
break;
case SIGPWR:
- if (m->running_as == MANAGER_SYSTEM)
+ if (m->running_as == SYSTEMD_SYSTEM)
manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
/* This is a nop on non-init */
}
case SIGUSR2: {
- FILE *f;
- char *dump = NULL;
+ _cleanup_free_ char *dump = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
size_t size;
- if (!(f = open_memstream(&dump, &size))) {
+ f = open_memstream(&dump, &size);
+ if (!f) {
log_warning("Failed to allocate memory stream.");
break;
}
manager_dump_jobs(m, f, "\t");
if (ferror(f)) {
- fclose(f);
- free(dump);
log_warning("Failed to write status stream");
break;
}
- fclose(f);
- log_dump(LOG_INFO, dump);
- free(dump);
+ if (fflush(f)) {
+ log_warning("Failed to flush status stream");
+ break;
+ }
+ log_dump(LOG_INFO, dump);
break;
}
case 20:
log_debug("Enabling showing of status.");
- manager_set_show_status(m, true);
+ manager_set_show_status(m, SHOW_STATUS_YES);
break;
case 21:
log_debug("Disabling showing of status.");
- manager_set_show_status(m, false);
+ manager_set_show_status(m, SHOW_STATUS_NO);
break;
case 22:
log_notice("Setting log level to info.");
break;
+ case 24:
+ if (m->running_as == SYSTEMD_USER) {
+ m->exit_code = MANAGER_EXIT;
+ return 0;
+ }
+
+ /* This is a nop on init */
+ break;
+
case 26:
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
log_notice("Setting log target to journal-or-kmsg.");
}
if (sigchld)
- return manager_dispatch_sigchld(m);
+ manager_dispatch_sigchld(m);
return 0;
}
-static int process_event(Manager *m, struct epoll_event *ev) {
- int r;
- Watch *w;
+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(ev);
-
- assert_se(w = ev->data.ptr);
-
- if (w->type == WATCH_INVALID)
- return 0;
-
- switch (w->type) {
-
- case WATCH_SIGNAL:
-
- /* An incoming signal? */
- if (ev->events != EPOLLIN)
- return -EINVAL;
-
- if ((r = manager_process_signal_fd(m)) < 0)
- return r;
-
- break;
-
- case WATCH_NOTIFY:
-
- /* An incoming daemon notification event? */
- if (ev->events != EPOLLIN)
- return -EINVAL;
-
- if ((r = manager_process_notify_fd(m)) < 0)
- return r;
+ assert(m->time_change_fd == fd);
- break;
+ log_struct(LOG_INFO,
+ MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
+ "MESSAGE=Time has been changed",
+ NULL);
- case WATCH_FD:
+ /* 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);
- /* Some fd event, to be dispatched to the units */
- UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
- break;
+ manager_setup_time_change(m);
- case WATCH_UNIT_TIMER:
- case WATCH_JOB_TIMER: {
- uint64_t v;
- ssize_t k;
+ HASHMAP_FOREACH(u, m->units, i)
+ if (UNIT_VTABLE(u)->time_change)
+ UNIT_VTABLE(u)->time_change(u);
- /* Some timer event, to be dispatched to the units */
- if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) {
+ return 0;
+}
- if (k < 0 && (errno == EINTR || errno == EAGAIN))
- break;
+static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
- return k < 0 ? -errno : -EIO;
- }
+ assert(m);
+ assert(m->idle_pipe[2] == fd);
- if (w->type == WATCH_UNIT_TIMER)
- UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
- else
- job_timer_event(w->data.job, v, w);
- break;
- }
+ m->no_console_output = m->n_on_console > 0;
- case WATCH_MOUNT:
- /* Some mount table change, intended for the mount subsystem */
- mount_fd_event(m, ev->events);
- break;
+ m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
+ manager_close_idle_pipe(m);
- case WATCH_SWAP:
- /* Some swap table change, intended for the swap subsystem */
- swap_fd_event(m, ev->events);
- break;
+ return 0;
+}
- case WATCH_UDEV:
- /* Some notification from udev, intended for the device subsystem */
- device_fd_event(m, ev->events);
- break;
+static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
+ Manager *m = userdata;
+ int r;
+ uint64_t next;
- case WATCH_DBUS_WATCH:
- bus_watch_event(m, w, ev->events);
- break;
+ assert(m);
+ assert(source);
- case WATCH_DBUS_TIMEOUT:
- bus_timeout_event(m, w, ev->events);
- break;
+ manager_print_jobs_in_progress(m);
- default:
- log_error("event type=%i", w->type);
- assert_not_reached("Unknown epoll event type.");
- }
+ next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
+ r = sd_event_source_set_time(source, next);
+ if (r < 0)
+ return r;
- return 0;
+ return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
}
int manager_loop(Manager *m) {
int r;
- int wait_msec = -1;
RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
assert(m);
- m->exit_code = MANAGER_RUNNING;
+ m->exit_code = MANAGER_OK;
/* Release the 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. Leat's reap them */
+ * before we were exec()'ed. Let's reap them. */
r = manager_dispatch_sigchld(m);
if (r < 0)
return r;
- /* Sleep for half the watchdog time */
- if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) {
- wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
- if (wait_msec <= 0)
- wait_msec = 1;
- }
-
- while (m->exit_code == MANAGER_RUNNING) {
- struct epoll_event event;
- int n;
+ while (m->exit_code == MANAGER_OK) {
+ usec_t wait_usec;
- if (wait_msec >= 0)
+ if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
watchdog_ping();
if (!ratelimit_test(&rl)) {
if (manager_dispatch_load_queue(m) > 0)
continue;
- if (manager_dispatch_run_queue(m) > 0)
- continue;
-
- if (bus_dispatch(m) > 0)
+ if (manager_dispatch_gc_queue(m) > 0)
continue;
if (manager_dispatch_cleanup_queue(m) > 0)
continue;
- if (manager_dispatch_gc_queue(m) > 0)
+ if (manager_dispatch_cgroup_queue(m) > 0)
continue;
if (manager_dispatch_dbus_queue(m) > 0)
continue;
- if (swap_dispatch_reload(m) > 0)
- continue;
-
- n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
- if (n < 0) {
-
- if (errno == EINTR)
- continue;
-
- return -errno;
- } else if (n == 0)
- continue;
-
- assert(n == 1);
+ /* Sleep for half the watchdog time */
+ if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
+ wait_usec = m->runtime_watchdog / 2;
+ if (wait_usec <= 0)
+ wait_usec = 1;
+ } else
+ wait_usec = (usec_t) -1;
- r = process_event(m, &event);
- if (r < 0)
+ r = sd_event_run(m->event, wait_usec);
+ if (r < 0) {
+ log_error("Failed to run event loop: %s", strerror(-r));
return r;
+ }
}
return m->exit_code;
}
-int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u) {
- char *n;
+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);
- if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
- return -EINVAL;
-
- if (!(n = bus_path_unescape(s+31)))
- return -ENOMEM;
-
- u = manager_get_unit(m, n);
- free(n);
+ r = unit_name_from_dbus_path(s, &n);
+ if (r < 0)
+ return r;
- if (!u)
- return -ENOENT;
+ r = manager_load_unit(m, n, NULL, e, &u);
+ if (r < 0)
+ return r;
*_u = u;
}
int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
- Job *j;
+ const char *p;
unsigned id;
+ Job *j;
int r;
assert(m);
assert(s);
assert(_j);
- if (!startswith(s, "/org/freedesktop/systemd1/job/"))
+ p = startswith(s, "/org/freedesktop/systemd1/job/");
+ if (!p)
return -EINVAL;
- if ((r = safe_atou(s + 30, &id)) < 0)
+ r = safe_atou(p, &id);
+ if (r < 0)
return r;
- if (!(j = manager_get_job(m, id)))
+ j = manager_get_job(m, id);
+ if (!j)
return -ENOENT;
*_j = j;
void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
#ifdef HAVE_AUDIT
- char *p;
+ _cleanup_free_ char *p = NULL;
+ int audit_fd;
- if (m->audit_fd < 0)
+ audit_fd = get_audit_fd();
+ if (audit_fd < 0)
return;
/* Don't generate audit events if the service was already
if (m->n_reloading > 0)
return;
- if (m->running_as != MANAGER_SYSTEM)
+ if (m->running_as != SYSTEMD_SYSTEM)
return;
if (u->type != UNIT_SERVICE)
return;
- if (!(p = unit_name_to_prefix_and_instance(u->id))) {
- log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
+ p = unit_name_to_prefix_and_instance(u->id);
+ if (!p) {
+ log_error_unit(u->id,
+ "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
return;
}
- if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
+ if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
if (errno == EPERM) {
/* We aren't allowed to send audit messages?
* Then let's not retry again. */
- audit_close(m->audit_fd);
- m->audit_fd = -1;
+ close_audit_fd();
} else
log_warning("Failed to send audit message: %m");
}
-
- free(p);
#endif
}
void manager_send_unit_plymouth(Manager *m, Unit *u) {
- int fd = -1;
- union sockaddr_union sa;
+ union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "\0/org/freedesktop/plymouthd",
+ };
+
int n = 0;
- char *message = NULL;
+ _cleanup_free_ char *message = NULL;
+ _cleanup_close_ int fd = -1;
/* Don't generate plymouth events if the service was already
* started and we're just deserializing */
if (m->n_reloading > 0)
return;
- if (m->running_as != MANAGER_SYSTEM)
+ if (m->running_as != SYSTEMD_SYSTEM)
+ return;
+
+ if (detect_container(NULL) > 0)
return;
if (u->type != UNIT_SERVICE &&
/* We set SOCK_NONBLOCK here so that we rather drop the
* message then wait for plymouth */
- if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
+ fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0) {
log_error("socket() failed: %m");
return;
}
- zero(sa);
- sa.sa.sa_family = AF_UNIX;
- strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
- if (errno != EPIPE &&
- errno != EAGAIN &&
- errno != ENOENT &&
- errno != ECONNREFUSED &&
- errno != ECONNRESET &&
- errno != ECONNABORTED)
- log_error("connect() failed: %m");
-
- goto finish;
+ if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
+ log_error("connect() failed: %m");
+ return;
}
if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
- log_error("Out of memory");
- goto finish;
+ log_oom();
+ return;
}
errno = 0;
- if (write(fd, message, n + 1) != n + 1) {
-
- if (errno != EPIPE &&
- errno != EAGAIN &&
- errno != ENOENT &&
- errno != ECONNREFUSED &&
- errno != ECONNRESET &&
- errno != ECONNABORTED)
+ if (write(fd, message, n + 1) != n + 1)
+ if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
log_error("Failed to write Plymouth message: %m");
-
- goto finish;
- }
-
-finish:
- if (fd >= 0)
- close_nointr_nofail(fd);
-
- free(message);
}
void manager_dispatch_bus_name_owner_changed(
assert(m);
assert(name);
- if (!(u = hashmap_get(m->watch_bus, name)))
+ u = hashmap_get(m->watch_bus, name);
+ if (!u)
return;
UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
}
-void manager_dispatch_bus_query_pid_done(
- Manager *m,
- const char *name,
- pid_t pid) {
-
- Unit *u;
-
- assert(m);
- assert(name);
- assert(pid >= 1);
-
- if (!(u = hashmap_get(m->watch_bus, name)))
- return;
-
- UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
-}
-
int manager_open_serialization(Manager *m, FILE **_f) {
- char *path = NULL;
- mode_t saved_umask;
- int fd;
+ const char *path;
+ int fd = -1;
FILE *f;
assert(_f);
- if (m->running_as == MANAGER_SYSTEM)
- asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
- else
- asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
-
- if (!path)
- return -ENOMEM;
-
- saved_umask = umask(0077);
- fd = mkostemp(path, O_RDWR|O_CLOEXEC);
- umask(saved_umask);
-
- if (fd < 0) {
- free(path);
+ path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
+ fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
+ if (fd < 0)
return -errno;
- }
-
- unlink(path);
log_debug("Serializing state to %s", path);
- free(path);
- if (!(f = fdopen(fd, "w+")))
+ f = fdopen(fd, "w+");
+ if (!f) {
+ safe_close(fd);
return -errno;
+ }
*_f = f;
return 0;
}
-int manager_serialize(Manager *m, FILE *f, FDSet *fds) {
+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);
fprintf(f, "current-job-id=%i\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);
- dual_timestamp_serialize(f, "startup-timestamp", &m->startup_timestamp);
- dual_timestamp_serialize(f, "finish-timestamp", &m->finish_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->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);
if (u->id != t)
continue;
- if (!unit_can_serialize(u))
- continue;
-
/* Start marker */
fputs(u->id, f);
fputc('\n', f);
- if ((r = unit_serialize(u, f, fds)) < 0) {
+ r = unit_serialize(u, f, fds, !switching_root);
+ if (r < 0) {
m->n_reloading --;
return r;
}
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;
- if ((b = parse_boolean(l+10)) < 0)
+ 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, "initrd-timestamp="))
+
+ } 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, "startup-timestamp="))
- dual_timestamp_deserialize(l+18, &m->startup_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
+ 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;
+
+ uce = cunescape(l+4);
+ if (!uce) {
+ r = -ENOMEM;
+ 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, "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 if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
log_debug("Unknown serialization item '%s'", l);
}
char_array_0(name);
- if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0)
+ r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
+ if (r < 0)
goto finish;
- if ((r = unit_deserialize(u, f, fds)) < 0)
+ r = unit_deserialize(u, f, fds);
+ if (r < 0)
goto finish;
}
finish:
- if (ferror(f)) {
+ if (ferror(f))
r = -EIO;
- goto finish;
- }
assert(m->n_reloading > 0);
m->n_reloading --;
int manager_reload(Manager *m) {
int r, q;
- FILE *f;
- FDSet *fds;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_fdset_free_ FDSet *fds = NULL;
assert(m);
- if ((r = manager_open_serialization(m, &f)) < 0)
+ r = manager_open_serialization(m, &f);
+ if (r < 0)
return r;
m->n_reloading ++;
+ bus_manager_send_reloading(m, true);
- if (!(fds = fdset_new())) {
+ fds = fdset_new();
+ if (!fds) {
m->n_reloading --;
- r = -ENOMEM;
- goto finish;
+ return -ENOMEM;
}
- if ((r = manager_serialize(m, f, fds)) < 0) {
+ r = manager_serialize(m, f, fds, false);
+ if (r < 0) {
m->n_reloading --;
- goto finish;
+ return r;
}
if (fseeko(f, 0, SEEK_SET) < 0) {
m->n_reloading --;
- r = -errno;
- goto finish;
+ return -errno;
}
/* From here on there is no way back. */
manager_clear_jobs_and_units(m);
manager_undo_generators(m);
-
- /* Find new unit paths */
lookup_paths_free(&m->lookup_paths);
- if ((q = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0)
- r = q;
+ /* Find new unit paths */
manager_run_generators(m);
+ q = lookup_paths_init(
+ &m->lookup_paths, m->running_as, true,
+ NULL,
+ m->generator_unit_path,
+ m->generator_unit_path_early,
+ m->generator_unit_path_late);
+ if (q < 0)
+ r = q;
+
manager_build_unit_path_cache(m);
/* First, enumerate what we can from all config files */
- if ((q = manager_enumerate(m)) < 0)
+ q = manager_enumerate(m);
+ if (q < 0)
r = q;
/* Second, deserialize our stored data */
- if ((q = manager_deserialize(m, f, fds)) < 0)
+ q = manager_deserialize(m, f, fds);
+ if (q < 0)
r = q;
fclose(f);
f = NULL;
+ /* Re-register notify_fd as event source */
+ q = manager_setup_notify(m);
+ if (q < 0)
+ r = q;
+
/* Third, fire things up! */
- if ((q = manager_coldplug(m)) < 0)
+ q = manager_coldplug(m);
+ if (q < 0)
r = q;
assert(m->n_reloading > 0);
m->n_reloading--;
-finish:
- if (f)
- fclose(f);
-
- if (fds)
- fdset_free(fds);
+ m->send_reloading_done = true;
return r;
}
-bool manager_is_booting_or_shutting_down(Manager *m) {
- Unit *u;
-
+bool manager_is_reloading_or_reexecuting(Manager *m) {
assert(m);
- /* Is the initial job still around? */
- if (manager_get_job(m, m->default_unit_job_id))
- return true;
-
- /* Is there a job for the shutdown target? */
- u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
- if (u)
- return !!u->job;
-
- return false;
+ return m->n_reloading != 0;
}
void manager_reset_failed(Manager *m) {
unit_reset_failed(u);
}
-bool manager_unit_pending_inactive(Manager *m, const char *name) {
+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 */
- if (!(u = manager_get_unit(m, name)))
+ u = manager_get_unit(m, name);
+ if (!u)
return true;
- return unit_pending_inactive(u);
+ return unit_inactive_or_pending(u);
}
void manager_check_finished(Manager *m) {
char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
- usec_t kernel_usec, initrd_usec, userspace_usec, total_usec;
+ usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
+ Unit *u = NULL;
+ Iterator i;
assert(m);
- if (dual_timestamp_is_set(&m->finish_timestamp))
+ if (m->n_running_jobs == 0)
+ m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
+
+ if (hashmap_size(m->jobs) > 0) {
+
+ if (m->jobs_in_progress_event_source) {
+ 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);
- if (hashmap_size(m->jobs) > 0)
+ /* Notify Type=idle units that we are done now */
+ m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
+ manager_close_idle_pipe(m);
+
+ /* Turn off confirm spawn now */
+ m->confirm_spawn = false;
+
+ if (dual_timestamp_is_set(&m->finish_timestamp))
return;
dual_timestamp_get(&m->finish_timestamp);
- if (m->running_as == MANAGER_SYSTEM && detect_container(NULL) <= 0) {
+ if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
- userspace_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic;
- total_usec = m->finish_timestamp.monotonic;
+ /* 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. */
- if (dual_timestamp_is_set(&m->initrd_timestamp)) {
+ 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;
- kernel_usec = m->initrd_timestamp.monotonic;
- initrd_usec = m->startup_timestamp.monotonic - m->initrd_timestamp.monotonic;
+ if (dual_timestamp_is_set(&m->initrd_timestamp)) {
- log_info("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
- format_timespan(kernel, sizeof(kernel), kernel_usec),
- format_timespan(initrd, sizeof(initrd), initrd_usec),
- format_timespan(userspace, sizeof(userspace), userspace_usec),
- format_timespan(sum, sizeof(sum), total_usec));
+ kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
+ initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
+
+ if (!log_on_console())
+ log_struct(LOG_INFO,
+ MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "KERNEL_USEC="USEC_FMT, kernel_usec,
+ "INITRD_USEC="USEC_FMT, initrd_usec,
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ "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->startup_timestamp.monotonic;
+ kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
initrd_usec = 0;
- log_info("Startup finished in %s (kernel) + %s (userspace) = %s.",
- format_timespan(kernel, sizeof(kernel), kernel_usec),
- format_timespan(userspace, sizeof(userspace), userspace_usec),
- format_timespan(sum, sizeof(sum), total_usec));
+ if (!log_on_console())
+ log_struct(LOG_INFO,
+ MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "KERNEL_USEC="USEC_FMT, kernel_usec,
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ "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 {
- userspace_usec = initrd_usec = kernel_usec = 0;
- total_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic;
+ firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
+ total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
- log_debug("Startup finished in %s.",
- format_timespan(sum, sizeof(sum), total_usec));
+ if (!log_on_console())
+ log_struct(LOG_INFO,
+ MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
+ "USERSPACE_USEC="USEC_FMT, userspace_usec,
+ "MESSAGE=Startup finished in %s.",
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
+ NULL);
}
- bus_broadcast_finished(m, kernel_usec, initrd_usec, userspace_usec, total_usec);
+ SET_FOREACH(u, m->startup_units, i)
+ cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
+
+ bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
sd_notifyf(false,
"READY=1\nSTATUS=Startup finished in %s.",
- format_timespan(sum, sizeof(sum), total_usec));
+ format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
}
-void manager_run_generators(Manager *m) {
- DIR *d = NULL;
- const char *generator_path;
- const char *argv[3];
- mode_t u;
+static int create_generator_dir(Manager *m, char **generator, const char *name) {
+ char *p;
+ int r;
assert(m);
+ assert(generator);
+ assert(name);
- generator_path = m->running_as == MANAGER_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
- if (!(d = opendir(generator_path))) {
-
- if (errno == ENOENT)
- return;
-
- log_error("Failed to enumerate generator directory: %m");
- return;
- }
+ if (*generator)
+ return 0;
- if (!m->generator_unit_path) {
- const char *p;
- char user_path[] = "/tmp/systemd-generator-XXXXXX";
+ if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
+ /* systemd --system, not running --test */
- if (m->running_as == MANAGER_SYSTEM && getpid() == 1) {
- p = "/run/systemd/generator";
+ p = strappend("/run/systemd/", name);
+ if (!p)
+ return log_oom();
- if (mkdir_p(p, 0755) < 0) {
- log_error("Failed to create generator directory: %m");
- goto finish;
- }
+ r = mkdir_p_label(p, 0755);
+ if (r < 0) {
+ log_error("Failed to create generator directory %s: %s",
+ p, strerror(-r));
+ free(p);
+ return r;
+ }
+ } else if (m->running_as == SYSTEMD_USER) {
+ const char *s = NULL;
- } else {
- if (!(p = mkdtemp(user_path))) {
- log_error("Failed to create generator directory: %m");
- goto finish;
- }
+ s = getenv("XDG_RUNTIME_DIR");
+ if (!s)
+ return -EINVAL;
+ p = strjoin(s, "/systemd/", name, NULL);
+ if (!p)
+ return log_oom();
+
+ r = mkdir_p_label(p, 0755);
+ if (r < 0) {
+ log_error("Failed to create generator directory %s: %s",
+ p, strerror(-r));
+ free(p);
+ return r;
}
+ } else {
+ /* systemd --system --test */
- if (!(m->generator_unit_path = strdup(p))) {
- log_error("Failed to allocate generator unit path.");
- goto finish;
+ p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
+ if (!p)
+ return log_oom();
+
+ if (!mkdtemp(p)) {
+ log_error("Failed to create generator directory %s: %m",
+ p);
+ free(p);
+ return -errno;
}
}
- argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
- argv[1] = m->generator_unit_path;
- argv[2] = NULL;
+ *generator = p;
+ return 0;
+}
- u = umask(0022);
- execute_directory(generator_path, d, (char**) argv);
- umask(u);
+static void trim_generator_dir(Manager *m, char **generator) {
+ assert(m);
+ assert(generator);
- if (rmdir(m->generator_unit_path) >= 0) {
- /* Uh? we were able to remove this dir? I guess that
- * means the directory was empty, hence let's shortcut
- * this */
+ if (!*generator)
+ return;
- free(m->generator_unit_path);
- m->generator_unit_path = NULL;
- goto finish;
+ if (rmdir(*generator) >= 0) {
+ free(*generator);
+ *generator = NULL;
}
- if (!strv_find(m->lookup_paths.unit_path, m->generator_unit_path)) {
- char **l;
+ return;
+}
- if (!(l = strv_append(m->lookup_paths.unit_path, m->generator_unit_path))) {
- log_error("Failed to add generator directory to unit search path: %m");
- goto finish;
- }
+void manager_run_generators(Manager *m) {
+ _cleanup_closedir_ DIR *d = NULL;
+ const char *generator_path;
+ const char *argv[5];
+ int r;
- strv_free(m->lookup_paths.unit_path);
- m->lookup_paths.unit_path = l;
+ assert(m);
+
+ generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
+ d = opendir(generator_path);
+ if (!d) {
+ if (errno == ENOENT)
+ return;
- log_debug("Added generator unit path %s to search path.", m->generator_unit_path);
+ log_error("Failed to enumerate generator directory %s: %m",
+ generator_path);
+ return;
}
+ r = create_generator_dir(m, &m->generator_unit_path, "generator");
+ if (r < 0)
+ goto finish;
+
+ r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
+ if (r < 0)
+ goto finish;
+
+ r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
+ if (r < 0)
+ goto finish;
+
+ argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
+ argv[1] = m->generator_unit_path;
+ argv[2] = m->generator_unit_path_early;
+ argv[3] = m->generator_unit_path_late;
+ argv[4] = NULL;
+
+ RUN_WITH_UMASK(0022)
+ execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
+
finish:
- if (d)
- closedir(d);
+ trim_generator_dir(m, &m->generator_unit_path);
+ trim_generator_dir(m, &m->generator_unit_path_early);
+ trim_generator_dir(m, &m->generator_unit_path_late);
}
-void manager_undo_generators(Manager *m) {
+static void remove_generator_dir(Manager *m, char **generator) {
assert(m);
+ assert(generator);
- if (!m->generator_unit_path)
+ if (!*generator)
return;
- strv_remove(m->lookup_paths.unit_path, m->generator_unit_path);
- rm_rf(m->generator_unit_path, false, true, false);
+ strv_remove(m->lookup_paths.unit_path, *generator);
+ rm_rf(*generator, false, true, false);
+
+ free(*generator);
+ *generator = NULL;
+}
+
+void manager_undo_generators(Manager *m) {
+ assert(m);
+
+ remove_generator_dir(m, &m->generator_unit_path);
+ remove_generator_dir(m, &m->generator_unit_path_early);
+ remove_generator_dir(m, &m->generator_unit_path_late);
+}
+
+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)
+ 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);
- free(m->generator_unit_path);
- m->generator_unit_path = NULL;
+ return 0;
}
-int manager_set_default_controllers(Manager *m, char **controllers) {
- char **l;
+int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
+ int i;
assert(m);
- if (!(l = strv_copy(controllers)))
- return -ENOMEM;
+ for (i = 0; i < _RLIMIT_MAX; i++) {
+ if (!default_rlimit[i])
+ continue;
- strv_free(m->default_controllers);
- m->default_controllers = l;
+ m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
+ if (!m->rlimit[i])
+ return -ENOMEM;
+ }
return 0;
}
assert(m);
- if (m->running_as != MANAGER_SYSTEM)
+ if (m->running_as != SYSTEMD_SYSTEM)
return;
u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
log_open();
}
-void manager_set_show_status(Manager *m, bool b) {
+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 (m->running_as != MANAGER_SYSTEM)
+ if (m->running_as != SYSTEMD_SYSTEM)
return;
- m->show_status = b;
+ m->show_status = mode;
- if (b)
+ if (mode > 0)
touch("/run/systemd/show-status");
else
unlink("/run/systemd/show-status");
}
-bool manager_get_show_status(Manager *m) {
+static bool manager_get_show_status(Manager *m) {
assert(m);
- if (m->running_as != MANAGER_SYSTEM)
+ if (m->running_as != SYSTEMD_SYSTEM)
+ return false;
+
+ if (m->no_console_output)
+ return false;
+
+ if (!IN_SET(manager_state(m), MANAGER_STARTING, MANAGER_STOPPING))
return false;
- if (m->show_status)
+ if (m->show_status > 0)
return true;
/* If Plymouth is running make sure we show the status, so
return plymouth_running();
}
-static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
- [MANAGER_SYSTEM] = "system",
- [MANAGER_USER] = "user"
+void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
+ va_list ap;
+
+ if (!manager_get_show_status(m))
+ return;
+
+ /* XXX We should totally drop the check for ephemeral here
+ * and thus effectively make 'Type=idle' pointless. */
+ if (ephemeral && m->n_on_console > 0)
+ return;
+
+ va_start(ap, format);
+ status_vprintf(status, true, ephemeral, format, ap);
+ va_end(ap);
+}
+
+int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
+ _cleanup_free_ char *p = NULL;
+ Unit *found;
+
+ assert(m);
+ assert(path);
+ assert(suffix);
+ assert(_found);
+
+ p = unit_name_from_path(path, suffix);
+ if (!p)
+ return -ENOMEM;
+
+ found = manager_get_unit(m, p);
+ if (!found) {
+ *_found = NULL;
+ return 0;
+ }
+
+ *_found = found;
+ return 1;
+}
+
+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 m->running_as == SYSTEMD_SYSTEM ?
+ "/run" :
+ getenv("XDG_RUNTIME_DIR");
+}
+
+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))
+ 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_TRY_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_TRY_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_TRY_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_STARTING] = "starting",
+ [MANAGER_RUNNING] = "running",
+ [MANAGER_DEGRADED] = "degraded",
+ [MANAGER_MAINTENANCE] = "maintenance",
+ [MANAGER_STOPPING] = "stopping",
};
-DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs);
+DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);