diff options
Diffstat (limited to 'src/libcore/manager.c')
-rw-r--r-- | src/libcore/manager.c | 492 |
1 files changed, 251 insertions, 241 deletions
diff --git a/src/libcore/manager.c b/src/libcore/manager.c index 9a34742cf6..831fdbaabf 100644 --- a/src/libcore/manager.c +++ b/src/libcore/manager.c @@ -49,6 +49,7 @@ #include "dbus-manager.h" #include "dbus-unit.h" #include "dbus.h" +#include "dirent-util.h" #include "env-util.h" #include "escape.h" #include "exit-status.h" @@ -63,6 +64,7 @@ #include "manager.h" #include "missing.h" #include "mkdir.h" +#include "mkdir.h" #include "parse-util.h" #include "path-lookup.h" #include "path-util.h" @@ -85,6 +87,7 @@ #include "watchdog.h" #define NOTIFY_RCVBUF_SIZE (8*1024*1024) +#define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) /* Initial delay and the interval for printing status messages about running jobs */ #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) @@ -92,13 +95,13 @@ #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); static int manager_run_generators(Manager *m); -static void manager_undo_generators(Manager *m); static void manager_watch_jobs_in_progress(Manager *m) { usec_t next; @@ -483,15 +486,15 @@ static int manager_setup_signals(Manager *m) { (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); - /* Process signals a bit earlier than the rest of things, but - * later than notify_fd processing, so that the notify - * processing can still figure out to which process/service a - * message belongs, before we reap the process. */ - r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-5); + /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the + * notify processing can still figure out to which process/service a message belongs, before we reap the + * process. Also, process this before handling cgroup notifications, so that we always collect child exit + * status information before detecting that there's no process in a cgroup. */ + r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); if (r < 0) return r; - if (m->running_as == MANAGER_SYSTEM) + if (MANAGER_IS_SYSTEM(m)) return enable_special_signals(m); return 0; @@ -518,7 +521,7 @@ static void manager_clean_environment(Manager *m) { static int manager_default_environment(Manager *m) { assert(m); - if (m->running_as == MANAGER_SYSTEM) { + if (MANAGER_IS_SYSTEM(m)) { /* The system manager always starts with a clean * environment for its children. It does not import * the kernel or the parents exported variables. @@ -547,52 +550,45 @@ static int manager_default_environment(Manager *m) { } -int manager_new(ManagerRunningAs running_as, bool test_run, Manager **_m) { - - static const char * const unit_log_fields[_MANAGER_RUNNING_AS_MAX] = { - [MANAGER_SYSTEM] = "UNIT=", - [MANAGER_USER] = "USER_UNIT=", - }; - - static const char * const unit_log_format_strings[_MANAGER_RUNNING_AS_MAX] = { - [MANAGER_SYSTEM] = "UNIT=%s", - [MANAGER_USER] = "USER_UNIT=%s", - }; - +int manager_new(UnitFileScope scope, bool test_run, Manager **_m) { Manager *m; int r; assert(_m); - assert(running_as >= 0); - assert(running_as < _MANAGER_RUNNING_AS_MAX); + assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); m = new0(Manager, 1); if (!m) return -ENOMEM; -#ifdef ENABLE_EFI - if (running_as == MANAGER_SYSTEM && detect_container() <= 0) - boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); -#endif - - m->running_as = running_as; + m->unit_file_scope = scope; m->exit_code = _MANAGER_EXIT_CODE_INVALID; m->default_timer_accuracy_usec = USEC_PER_MINUTE; m->default_tasks_accounting = true; m->default_tasks_max = UINT64_C(512); +#ifdef ENABLE_EFI + if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) + boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); +#endif + /* Prepare log fields we can use for structured logging */ - m->unit_log_field = unit_log_fields[running_as]; - m->unit_log_format_string = unit_log_format_strings[running_as]; + if (MANAGER_IS_SYSTEM(m)) { + m->unit_log_field = "UNIT="; + m->unit_log_format_string = "UNIT=%s"; + } else { + m->unit_log_field = "USER_UNIT="; + m->unit_log_format_string = "USER_UNIT=%s"; + } m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; - m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = - m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd = -1; + m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = + m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd = + m->ask_password_inotify_fd = -1; m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ - m->ask_password_inotify_fd = -1; m->have_ask_password = -EINVAL; /* we don't know */ m->first_boot = -1; @@ -683,6 +679,7 @@ static int manager_setup_notify(Manager *m) { .sa.sa_family = AF_UNIX, }; static const int one = 1; + const char *e; /* First free all secondary fields */ m->notify_socket = mfree(m->notify_socket); @@ -694,19 +691,13 @@ static int manager_setup_notify(Manager *m) { fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); - if (m->running_as == MANAGER_SYSTEM) - m->notify_socket = strdup("/run/systemd/notify"); - else { - const char *e; - - e = getenv("XDG_RUNTIME_DIR"); - if (!e) { - log_error_errno(errno, "XDG_RUNTIME_DIR is not set: %m"); - return -EINVAL; - } - - m->notify_socket = strappend(e, "/systemd/notify"); + e = manager_get_runtime_prefix(m); + if (!e) { + log_error("Failed to determine runtime prefix."); + return -EINVAL; } + + m->notify_socket = strappend(e, "/systemd/notify"); if (!m->notify_socket) return log_oom(); @@ -714,7 +705,7 @@ static int manager_setup_notify(Manager *m) { (void) unlink(m->notify_socket); 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)); + r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); if (r < 0) return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); @@ -733,8 +724,8 @@ static int manager_setup_notify(Manager *m) { if (r < 0) return log_error_errno(r, "Failed to allocate notify event source: %m"); - /* Process signals a bit earlier than SIGCHLD, so that we can - * still identify to which service an exit message belongs */ + /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which + * service an exit message belongs. */ r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); if (r < 0) return log_error_errno(r, "Failed to set priority of notify event source: %m"); @@ -745,6 +736,79 @@ static int manager_setup_notify(Manager *m) { return 0; } +static int manager_setup_cgroups_agent(Manager *m) { + + static const union sockaddr_union sa = { + .un.sun_family = AF_UNIX, + .un.sun_path = "/run/systemd/cgroups-agent", + }; + int r; + + /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering + * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and + * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on + * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number + * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, + * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX + * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and + * we thus won't lose messages. + * + * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen + * to it. The system instance hence listens on this special socket, but the user instances listen on the system + * bus for these messages. */ + + if (m->test_run) + return 0; + + if (!MANAGER_IS_SYSTEM(m)) + return 0; + + if (cg_unified() > 0) /* We don't need this anymore on the unified hierarchy */ + return 0; + + if (m->cgroups_agent_fd < 0) { + _cleanup_close_ int fd = -1; + + /* First free all secondary fields */ + m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); + + fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); + if (fd < 0) + return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); + + fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); + + (void) unlink(sa.un.sun_path); + + /* Only allow root to connect to this socket */ + RUN_WITH_UMASK(0077) + r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); + if (r < 0) + return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); + + m->cgroups_agent_fd = fd; + fd = -1; + } + + if (!m->cgroups_agent_event_source) { + r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); + if (r < 0) + return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); + + /* Process cgroups notifications early, but after having processed service notification messages or + * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, + * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of + * cgroup inotify for the unified cgroup stuff. */ + r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5); + if (r < 0) + return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); + + (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); + } + + return 0; +} + static int manager_setup_kdbus(Manager *m) { _cleanup_free_ char *p = NULL; @@ -756,8 +820,8 @@ static int manager_setup_kdbus(Manager *m) { return -ESOCKTNOSUPPORT; m->kdbus_fd = bus_kernel_create_bus( - m->running_as == MANAGER_SYSTEM ? "system" : "user", - m->running_as == MANAGER_SYSTEM, &p); + MANAGER_IS_SYSTEM(m) ? "system" : "user", + MANAGER_IS_SYSTEM(m), &p); if (m->kdbus_fd < 0) return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m"); @@ -778,7 +842,7 @@ static int manager_connect_bus(Manager *m, bool reexecuting) { try_bus_connect = m->kdbus_fd >= 0 || reexecuting || - (m->running_as == MANAGER_USER && getenv("DBUS_SESSION_BUS_ADDRESS")); + (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS")); /* Try to connect to the buses, if possible. */ return bus_init(m, try_bus_connect); @@ -940,7 +1004,7 @@ Manager* manager_free(Manager *m) { * around */ manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); - manager_undo_generators(m); + lookup_paths_flush_generator(&m->lookup_paths); bus_done(m); @@ -955,12 +1019,14 @@ Manager* manager_free(Manager *m) { sd_event_source_unref(m->signal_event_source); sd_event_source_unref(m->notify_event_source); + sd_event_source_unref(m->cgroups_agent_event_source); sd_event_source_unref(m->time_change_event_source); sd_event_source_unref(m->jobs_in_progress_event_source); sd_event_source_unref(m->run_queue_event_source); safe_close(m->signal_fd); safe_close(m->notify_fd); + safe_close(m->cgroups_agent_fd); safe_close(m->time_change_fd); safe_close(m->kdbus_fd); @@ -1037,7 +1103,6 @@ static void manager_coldplug(Manager *m) { static void manager_build_unit_path_cache(Manager *m) { char **i; - _cleanup_closedir_ DIR *d = NULL; int r; assert(m); @@ -1046,29 +1111,27 @@ static void manager_build_unit_path_cache(Manager *m) { m->unit_path_cache = set_new(&string_hash_ops); if (!m->unit_path_cache) { - log_error("Failed to allocate unit path cache."); - return; + r = -ENOMEM; + goto fail; } /* This simply builds a list of files we know exist, so that * we don't always have to go to disk */ - STRV_FOREACH(i, m->lookup_paths.unit_path) { + STRV_FOREACH(i, m->lookup_paths.search_path) { + _cleanup_closedir_ DIR *d = NULL; struct dirent *de; d = opendir(*i); if (!d) { if (errno != ENOENT) - log_error_errno(errno, "Failed to open directory %s: %m", *i); + log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); continue; } - while ((de = readdir(d))) { + FOREACH_DIRENT(de, d, r = -errno; goto fail) { char *p; - if (hidden_file(de->d_name)) - continue; - p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); if (!p) { r = -ENOMEM; @@ -1079,20 +1142,15 @@ static void manager_build_unit_path_cache(Manager *m) { if (r < 0) goto fail; } - - d = safe_closedir(d); } return; fail: - log_error_errno(r, "Failed to build unit path cache: %m"); - - set_free_free(m->unit_path_cache); - m->unit_path_cache = NULL; + log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); + m->unit_path_cache = set_free_free(m->unit_path_cache); } - static void manager_distribute_fds(Manager *m, FDSet *fds) { Iterator i; Unit *u; @@ -1116,28 +1174,29 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { assert(m); - dual_timestamp_get(&m->generators_start_timestamp); - r = manager_run_generators(m); - dual_timestamp_get(&m->generators_finish_timestamp); + r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); + if (r < 0) + return r; + + /* Make sure the transient directory always exists, so that it remains in the search path */ + r = mkdir_p_label(m->lookup_paths.transient, 0755); if (r < 0) return r; - 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); + dual_timestamp_get(&m->generators_start_timestamp); + r = manager_run_generators(m); + dual_timestamp_get(&m->generators_finish_timestamp); if (r < 0) return r; + lookup_paths_reduce(&m->lookup_paths); manager_build_unit_path_cache(m); /* If we will deserialize make sure that during enumeration * this is already known, so we increase the counter here * already */ if (serialization) - m->n_reloading ++; + m->n_reloading++; /* First, enumerate what we can from all config files */ dual_timestamp_get(&m->units_load_start_timestamp); @@ -1160,6 +1219,10 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { if (q < 0 && r == 0) r = q; + q = manager_setup_cgroups_agent(m); + if (q < 0 && r == 0) + r = q; + /* We might have deserialized the kdbus control fd, but if we * didn't, then let's create the bus now. */ manager_setup_kdbus(m); @@ -1171,7 +1234,7 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { if (serialization) { assert(m->n_reloading > 0); - m->n_reloading --; + m->n_reloading--; /* Let's wait for the UnitNew/JobNew messages being * sent, before we notify that the reload is @@ -1333,8 +1396,12 @@ int manager_load_unit_prepare( t = unit_name_to_type(name); - if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) + if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { + if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) + return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); + return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); + } ret = manager_get_unit(m, name); if (ret) { @@ -1427,7 +1494,7 @@ void manager_clear_jobs(Manager *m) { while ((j = hashmap_first(m->jobs))) /* No need to recurse. We're cancelling all jobs. */ - job_finish_and_invalidate(j, JOB_CANCELED, false); + job_finish_and_invalidate(j, JOB_CANCELED, false, false); } static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { @@ -1493,6 +1560,35 @@ static unsigned manager_dispatch_dbus_queue(Manager *m) { return n; } +static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; + char buf[PATH_MAX+1]; + ssize_t n; + + n = recv(fd, buf, sizeof(buf), 0); + if (n < 0) + return log_error_errno(errno, "Failed to read cgroups agent message: %m"); + if (n == 0) { + log_error("Got zero-length cgroups agent message, ignoring."); + return 0; + } + if ((size_t) n >= sizeof(buf)) { + log_error("Got overly long cgroups agent message, ignoring."); + return 0; + } + + if (memchr(buf, 0, n)) { + log_error("Got cgroups agent message with embedded NUL byte, ignoring."); + return 0; + } + buf[n] = 0; + + manager_notify_cgroup_empty(m, buf); + bus_forward_agent_released(m, buf); + + return 0; +} + static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) { _cleanup_strv_free_ char **tags = NULL; @@ -1631,7 +1727,9 @@ static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { log_unit_debug(u, "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); + + if (UNIT_VTABLE(u)->sigchld_event) + UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); } static int manager_dispatch_sigchld(Manager *m) { @@ -1738,7 +1836,7 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t } log_received_signal(sfsi.ssi_signo == SIGCHLD || - (sfsi.ssi_signo == SIGTERM && m->running_as == MANAGER_USER) + (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) ? LOG_DEBUG : LOG_INFO, &sfsi); @@ -1749,7 +1847,7 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t break; case SIGTERM: - if (m->running_as == MANAGER_SYSTEM) { + if (MANAGER_IS_SYSTEM(m)) { /* This is for compatibility with the * original sysvinit */ m->exit_code = MANAGER_REEXECUTE; @@ -1759,7 +1857,7 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t /* Fall through */ case SIGINT: - if (m->running_as == MANAGER_SYSTEM) { + if (MANAGER_IS_SYSTEM(m)) { /* If the user presses C-A-D more than * 7 times within 2s, we reboot @@ -1785,14 +1883,14 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t break; case SIGWINCH: - if (m->running_as == MANAGER_SYSTEM) + if (MANAGER_IS_SYSTEM(m)) manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); /* This is a nop on non-init */ break; case SIGPWR: - if (m->running_as == MANAGER_SYSTEM) + if (MANAGER_IS_SYSTEM(m)) manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); /* This is a nop on non-init */ @@ -1900,7 +1998,7 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t break; case 24: - if (m->running_as == MANAGER_USER) { + if (MANAGER_IS_USER(m)) { m->exit_code = MANAGER_EXIT; return 0; } @@ -2016,7 +2114,7 @@ int manager_loop(Manager *m) { while (m->exit_code == MANAGER_OK) { usec_t wait_usec; - if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) + if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) watchdog_ping(); if (!ratelimit_test(&rl)) { @@ -2041,7 +2139,7 @@ int manager_loop(Manager *m) { continue; /* Sleep for half the watchdog time */ - if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) { + if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { wait_usec = m->runtime_watchdog / 2; if (wait_usec <= 0) wait_usec = 1; @@ -2112,7 +2210,7 @@ void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { const char *msg; int audit_fd, r; - if (m->running_as != MANAGER_SYSTEM) + if (!MANAGER_IS_SYSTEM(m)) return; audit_fd = get_audit_fd(); @@ -2121,7 +2219,7 @@ void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { /* Don't generate audit events if the service was already * started and we're just deserializing */ - if (m->n_reloading > 0) + if (MANAGER_IS_RELOADING(m)) return; if (u->type != UNIT_SERVICE) @@ -2147,18 +2245,17 @@ void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { } void manager_send_unit_plymouth(Manager *m, Unit *u) { - union sockaddr_union sa = PLYMOUTH_SOCKET; - - int n = 0; + static const union sockaddr_union sa = PLYMOUTH_SOCKET; _cleanup_free_ char *message = NULL; _cleanup_close_ int fd = -1; + int n = 0; /* Don't generate plymouth events if the service was already * started and we're just deserializing */ - if (m->n_reloading > 0) + if (MANAGER_IS_RELOADING(m)) return; - if (m->running_as != MANAGER_SYSTEM) + if (!MANAGER_IS_SYSTEM(m)) return; if (detect_container() > 0) @@ -2177,7 +2274,7 @@ void manager_send_unit_plymouth(Manager *m, Unit *u) { return; } - if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { + if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) log_error_errno(errno, "connect() failed: %m"); @@ -2202,8 +2299,8 @@ int manager_open_serialization(Manager *m, FILE **_f) { assert(_f); - path = m->running_as == MANAGER_SYSTEM ? "/run/systemd" : "/tmp"; - fd = open_tmpfile(path, O_RDWR|O_CLOEXEC); + path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp"; + fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC); if (fd < 0) return -errno; @@ -2231,7 +2328,7 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { assert(f); assert(fds); - m->n_reloading ++; + m->n_reloading++; fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); @@ -2277,6 +2374,16 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { fprintf(f, "notify-socket=%s\n", m->notify_socket); } + if (m->cgroups_agent_fd >= 0) { + int copy; + + copy = fdset_put_dup(fds, m->cgroups_agent_fd); + if (copy < 0) + return copy; + + fprintf(f, "cgroups-agent-fd=%i\n", copy); + } + if (m->kdbus_fd >= 0) { int copy; @@ -2301,13 +2408,13 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { r = unit_serialize(u, f, fds, !switching_root); if (r < 0) { - m->n_reloading --; + m->n_reloading--; return r; } } assert(m->n_reloading > 0); - m->n_reloading --; + m->n_reloading--; if (ferror(f)) return -EIO; @@ -2327,7 +2434,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { log_debug("Deserializing state..."); - m->n_reloading ++; + m->n_reloading++; for (;;) { char line[LINE_MAX], *l; @@ -2444,6 +2551,17 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { free(m->notify_socket); m->notify_socket = n; + } else if (startswith(l, "cgroups-agent-fd=")) { + int fd; + + if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) + log_debug("Failed to parse cgroups agent fd: %s", l + 10); + else { + m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); + safe_close(m->cgroups_agent_fd); + m->cgroups_agent_fd = fdset_remove(fds, fd); + } + } else if (startswith(l, "kdbus-fd=")) { int fd; @@ -2495,7 +2613,7 @@ finish: r = -EIO; assert(m->n_reloading > 0); - m->n_reloading --; + m->n_reloading--; return r; } @@ -2511,45 +2629,41 @@ int manager_reload(Manager *m) { if (r < 0) return r; - m->n_reloading ++; + m->n_reloading++; bus_manager_send_reloading(m, true); fds = fdset_new(); if (!fds) { - m->n_reloading --; + m->n_reloading--; return -ENOMEM; } r = manager_serialize(m, f, fds, false); if (r < 0) { - m->n_reloading --; + m->n_reloading--; return r; } if (fseeko(f, 0, SEEK_SET) < 0) { - m->n_reloading --; + m->n_reloading--; return -errno; } /* From here on there is no way back. */ manager_clear_jobs_and_units(m); - manager_undo_generators(m); + lookup_paths_flush_generator(&m->lookup_paths); lookup_paths_free(&m->lookup_paths); - /* Find new unit paths */ - q = manager_run_generators(m); + q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); if (q < 0 && r >= 0) r = q; - 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); + /* Find new unit paths */ + q = manager_run_generators(m); if (q < 0 && r >= 0) r = q; + lookup_paths_reduce(&m->lookup_paths); manager_build_unit_path_cache(m); /* First, enumerate what we can from all config files */ @@ -2568,6 +2682,10 @@ int manager_reload(Manager *m) { if (q < 0 && r >= 0) r = q; + q = manager_setup_cgroups_agent(m); + if (q < 0 && r >= 0) + r = q; + /* Third, fire things up! */ manager_coldplug(m); @@ -2583,12 +2701,6 @@ int manager_reload(Manager *m) { return r; } -bool manager_is_reloading_or_reexecuting(Manager *m) { - assert(m); - - return m->n_reloading != 0; -} - void manager_reset_failed(Manager *m) { Unit *u; Iterator i; @@ -2620,7 +2732,7 @@ static void manager_notify_finished(Manager *m) { if (m->test_run) return; - if (m->running_as == MANAGER_SYSTEM && detect_container() <= 0) { + if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { /* Note that m->kernel_usec.monotonic is always at 0, * and m->firmware_usec.monotonic and @@ -2685,7 +2797,7 @@ static void manager_notify_finished(Manager *m) { void manager_check_finished(Manager *m) { assert(m); - if (m->n_reloading > 0) + if (MANAGER_IS_RELOADING(m)) return; /* Verify that we are actually running currently. Initially @@ -2726,77 +2838,6 @@ void manager_check_finished(Manager *m) { manager_invalidate_startup_units(m); } -static int create_generator_dir(Manager *m, char **generator, const char *name) { - char *p; - int r; - - assert(m); - assert(generator); - assert(name); - - if (*generator) - return 0; - - if (m->running_as == MANAGER_SYSTEM && getpid() == 1) { - /* systemd --system, not running --test */ - - p = strappend("/run/systemd/", name); - if (!p) - return log_oom(); - - r = mkdir_p_label(p, 0755); - if (r < 0) { - log_error_errno(r, "Failed to create generator directory %s: %m", p); - free(p); - return r; - } - } else if (m->running_as == MANAGER_USER) { - const char *s = NULL; - - 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_errno(r, "Failed to create generator directory %s: %m", p); - free(p); - return r; - } - } else { - /* systemd --system --test */ - - p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); - if (!p) - return log_oom(); - - if (!mkdtemp(p)) { - log_error_errno(errno, "Failed to create generator directory %s: %m", p); - free(p); - return -errno; - } - } - - *generator = p; - return 0; -} - -static void trim_generator_dir(Manager *m, char **generator) { - assert(m); - assert(generator); - - if (!*generator) - return; - - if (rmdir(*generator) >= 0) - *generator = mfree(*generator); - - return; -} - static int manager_run_generators(Manager *m) { _cleanup_strv_free_ char **paths = NULL; const char *argv[5]; @@ -2808,71 +2849,40 @@ static int manager_run_generators(Manager *m) { if (m->test_run) return 0; - paths = generator_paths(m->running_as); + paths = generator_binary_paths(m->unit_file_scope); if (!paths) return log_oom(); /* Optimize by skipping the whole process by not creating output directories * if no generators are found. */ STRV_FOREACH(path, paths) { - r = access(*path, F_OK); - if (r == 0) + if (access(*path, F_OK) >= 0) goto found; if (errno != ENOENT) log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); } + return 0; found: - r = 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"); + r = lookup_paths_mkdir_generator(&m->lookup_paths); if (r < 0) goto finish; argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ - argv[1] = m->generator_unit_path; - argv[2] = m->generator_unit_path_early; - argv[3] = m->generator_unit_path_late; + argv[1] = m->lookup_paths.generator; + argv[2] = m->lookup_paths.generator_early; + argv[3] = m->lookup_paths.generator_late; argv[4] = NULL; RUN_WITH_UMASK(0022) execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv); finish: - 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); + lookup_paths_trim_generator(&m->lookup_paths); return r; } -static void remove_generator_dir(Manager *m, char **generator) { - assert(m); - assert(generator); - - if (!*generator) - return; - - strv_remove(m->lookup_paths.unit_path, *generator); - (void) rm_rf(*generator, REMOVE_ROOT); - - *generator = mfree(*generator); -} - -static 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); @@ -2935,7 +2945,7 @@ void manager_recheck_journal(Manager *m) { assert(m); - if (m->running_as != MANAGER_SYSTEM) + if (!MANAGER_IS_SYSTEM(m)) return; u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); @@ -2959,7 +2969,7 @@ 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 (!MANAGER_IS_SYSTEM(m)) return; if (m->show_status != mode) @@ -2976,7 +2986,7 @@ void manager_set_show_status(Manager *m, ShowStatus mode) { static bool manager_get_show_status(Manager *m, StatusType type) { assert(m); - if (m->running_as != MANAGER_SYSTEM) + if (!MANAGER_IS_SYSTEM(m)) return false; if (m->no_console_output) @@ -2998,7 +3008,7 @@ static bool manager_get_show_status(Manager *m, StatusType type) { void manager_set_first_boot(Manager *m, bool b) { assert(m); - if (m->running_as != MANAGER_SYSTEM) + if (!MANAGER_IS_SYSTEM(m)) return; if (m->first_boot != (int) b) { @@ -3044,7 +3054,7 @@ Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { const char *manager_get_runtime_prefix(Manager *m) { assert(m); - return m->running_as == MANAGER_SYSTEM ? + return MANAGER_IS_SYSTEM(m) ? "/run" : getenv("XDG_RUNTIME_DIR"); } |