X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmanager.c;h=c99a022cd5390ffc42d66848c223d3c4d6f0ab8a;hp=549153e057493d2b9db7c06511f1f7bee0375c01;hb=2f38577f3040eedebfe1ace05d5b5a779a588af1;hpb=b92bea5d2a9481de69bb627a7b442a9f58fca43d diff --git a/src/core/manager.c b/src/core/manager.c index 549153e05..c99a022cd 100644 --- a/src/core/manager.c +++ b/src/core/manager.c @@ -55,7 +55,7 @@ #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" @@ -70,12 +70,9 @@ #include "cgroup-util.h" #include "path-util.h" #include "audit-fd.h" -#include "efivars.h" +#include "boot-timestamps.h" #include "env-util.h" -/* As soon as 16 units are in our GC queue, make sure to run a gc sweep */ -#define GC_QUEUE_ENTRIES_MAX 16 - /* 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) @@ -239,7 +236,7 @@ static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned po *p++ = '*'; if (pos < width-1) p = mempset(p, ' ', width-1-pos); - p = stpcpy(p, ANSI_HIGHLIGHT_OFF); + strcpy(p, ANSI_HIGHLIGHT_OFF); } } @@ -260,6 +257,7 @@ static void manager_print_jobs_in_progress(Manager *m) { /* 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) @@ -277,6 +275,54 @@ static void manager_print_jobs_in_progress(Manager *m) { m->jobs_in_progress_iteration++; } +static int manager_watch_idle_pipe(Manager *m) { + struct epoll_event ev = { + .events = EPOLLIN, + .data.ptr = &m->idle_pipe_watch, + }; + int r; + + if (m->idle_pipe_watch.type != WATCH_INVALID) + return 0; + + if (m->idle_pipe[2] < 0) + return 0; + + m->idle_pipe_watch.type = WATCH_IDLE_PIPE; + m->idle_pipe_watch.fd = m->idle_pipe[2]; + if (m->idle_pipe_watch.fd < 0) { + log_error("Failed to create timerfd: %m"); + r = -errno; + goto err; + } + + if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->idle_pipe_watch.fd, &ev) < 0) { + log_error("Failed to add idle_pipe fd to epoll: %m"); + r = -errno; + goto err; + } + + log_debug("Set up idle_pipe watch."); + + return 0; + +err: + if (m->idle_pipe_watch.fd >= 0) + close_nointr_nofail(m->idle_pipe_watch.fd); + watch_init(&m->idle_pipe_watch); + return r; +} + +static void manager_unwatch_idle_pipe(Manager *m) { + if (m->idle_pipe_watch.type != WATCH_IDLE_PIPE) + return; + + assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->idle_pipe_watch.fd, NULL) >= 0); + watch_init(&m->idle_pipe_watch); + + log_debug("Closed idle_pipe watch."); +} + static int manager_setup_time_change(Manager *m) { struct epoll_event ev = { .events = EPOLLIN, @@ -410,27 +456,37 @@ static int manager_setup_signals(Manager *m) { return 0; } -static void manager_strip_environment(Manager *m) { +static int manager_default_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_"); + 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); - /* 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_"); + if (!m->environment) + return -ENOMEM; - /* Drop invalid entries */ - strv_env_clean(m->environment); + return 0; } -int manager_new(SystemdRunningAs running_as, Manager **_m) { +int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) { Manager *m; int r = -ENOMEM; + bool try_bus_connect = false; assert(_m); assert(running_as >= 0); @@ -440,17 +496,16 @@ int manager_new(SystemdRunningAs running_as, Manager **_m) { if (!m) return -ENOMEM; - dual_timestamp_get(&m->userspace_timestamp); - dual_timestamp_from_monotonic(&m->kernel_timestamp, 0); #ifdef ENABLE_EFI - efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); + if (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->idle_pipe[0] = m->idle_pipe[1] = -1; + m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; watch_init(&m->signal_watch); watch_init(&m->mount_watch); @@ -462,18 +517,10 @@ int manager_new(SystemdRunningAs running_as, Manager **_m) { m->epoll_fd = m->dev_autofs_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); - - if (running_as == SYSTEMD_SYSTEM) { - m->default_controllers = strv_new("cpu", NULL); - if (!m->default_controllers) - goto fail; - } - if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) goto fail; @@ -483,10 +530,12 @@ int manager_new(SystemdRunningAs running_as, Manager **_m) { if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) goto fail; - if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) + m->cgroup_unit = hashmap_new(string_hash_func, string_compare_func); + if (!m->cgroup_unit) goto fail; - if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) + m->watch_bus = hashmap_new(string_hash_func, string_compare_func); + if (!m->watch_bus) goto fail; m->epoll_fd = epoll_create1(EPOLL_CLOEXEC); @@ -509,8 +558,15 @@ int manager_new(SystemdRunningAs running_as, Manager **_m) { if (r < 0) goto fail; + if (running_as == SYSTEMD_SYSTEM) + try_bus_connect = reexecuting; + else if (getenv("DBUS_SESSION_BUS_ADDRESS")) + try_bus_connect = true; + else + log_debug("Skipping DBus session bus connection attempt - no DBUS_SESSION_BUS_ADDRESS set..."); + /* Try to connect to the busses, if possible. */ - r = bus_init(m, running_as != SYSTEMD_SYSTEM); + r = bus_init(m, try_bus_connect); if (r < 0) goto fail; @@ -607,12 +663,7 @@ static unsigned manager_dispatch_gc_queue(Manager *m) { 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) @@ -625,7 +676,7 @@ static unsigned manager_dispatch_gc_queue(Manager *m) { 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++; @@ -639,7 +690,6 @@ static unsigned manager_dispatch_gc_queue(Manager *m) { } m->n_in_gc_queue = 0; - m->gc_queue_timestamp = 0; return n; } @@ -668,6 +718,11 @@ static void manager_clear_jobs_and_units(Manager *m) { m->n_running_jobs = 0; } +static void close_idle_pipe(Manager *m) { + close_pipe(m->idle_pipe); + close_pipe(m->idle_pipe + 2); +} + void manager_free(Manager *m) { UnitType c; int i; @@ -709,12 +764,10 @@ void manager_free(Manager *m) { 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); - close_pipe(m->idle_pipe); + close_idle_pipe(m); free(m->switch_root); free(m->switch_root_init); @@ -722,6 +775,9 @@ void manager_free(Manager *m) { for (i = 0; i < RLIMIT_NLIMITS; i++) free(m->rlimit[i]); + assert(hashmap_isempty(m->units_requiring_mounts_for)); + hashmap_free(m->units_requiring_mounts_for); + free(m); } @@ -734,15 +790,17 @@ int manager_enumerate(Manager *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) { +static int manager_coldplug(Manager *m) { int r = 0, q; Iterator i; Unit *u; @@ -766,7 +824,7 @@ int manager_coldplug(Manager *m) { static void manager_build_unit_path_cache(Manager *m) { char **i; - DIR _cleanup_free_ *d = NULL; + _cleanup_free_ DIR *d = NULL; int r; assert(m); @@ -804,11 +862,9 @@ static void manager_build_unit_path_cache(Manager *m) { goto fail; } - r = set_put(m->unit_path_cache, p); - if (r < 0) { - free(p); + r = set_consume(m->unit_path_cache, p); + if (r < 0) goto fail; - } } closedir(d); @@ -824,12 +880,37 @@ fail: m->unit_path_cache = NULL; } + +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) { int r, q; 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, @@ -848,7 +929,9 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { m->n_reloading ++; /* First, enumerate what we can from all config files */ + dual_timestamp_get(&m->unitsload_start_timestamp); r = manager_enumerate(m); + dual_timestamp_get(&m->unitsload_finish_timestamp); /* Second, deserialize if there is something to deserialize */ if (serialization) { @@ -875,6 +958,11 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { 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; @@ -996,7 +1084,13 @@ unsigned manager_dispatch_load_queue(Manager *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, + DBusError *e, + Unit **_ret) { + Unit *ret; UnitType t; int r; @@ -1040,7 +1134,8 @@ int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DB } } - if ((r = unit_add_name(ret, name)) < 0) { + r = unit_add_name(ret, name); + if (r < 0) { unit_free(ret); return r; } @@ -1055,7 +1150,13 @@ int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DB 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, + DBusError *e, + Unit **_ret) { + int r; assert(m); @@ -1109,7 +1210,7 @@ void manager_clear_jobs(Manager *m) { job_finish_and_invalidate(j, JOB_CANCELED, false); } -unsigned manager_dispatch_run_queue(Manager *m) { +static unsigned manager_dispatch_run_queue(Manager *m) { Job *j; unsigned n = 0; @@ -1131,10 +1232,13 @@ unsigned manager_dispatch_run_queue(Manager *m) { if (m->n_running_jobs > 0) manager_watch_jobs_in_progress(m); + if (m->n_on_console > 0) + manager_watch_idle_pipe(m); + return n; } -unsigned manager_dispatch_dbus_queue(Manager *m) { +static unsigned manager_dispatch_dbus_queue(Manager *m) { Job *j; Unit *u; unsigned n = 0; @@ -1161,6 +1265,13 @@ unsigned manager_dispatch_dbus_queue(Manager *m) { } m->dispatching_dbus_queue = false; + + if (m->send_reloading_done) { + m->send_reloading_done = false; + + bus_broadcast_reloading(m, false); + } + return n; } @@ -1189,7 +1300,7 @@ static int manager_process_notify_fd(Manager *m) { }; struct ucred *ucred; Unit *u; - char _cleanup_strv_free_ **tags = NULL; + _cleanup_strv_free_ char **tags = NULL; n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT); if (n <= 0) { @@ -1214,7 +1325,7 @@ static int manager_process_notify_fd(Manager *m) { u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)); if (!u) { - u = cgroup_unit_by_pid(m, ucred->pid); + u = manager_get_unit_by_pid(m, ucred->pid); if (!u) { log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); continue; @@ -1262,7 +1373,7 @@ static int manager_dispatch_sigchld(Manager *m) { break; if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { - char _cleanup_free_ *name = NULL; + _cleanup_free_ char *name = NULL; get_process_comm(si.si_pid, &name); log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); @@ -1279,7 +1390,7 @@ static int manager_dispatch_sigchld(Manager *m) { /* And now figure out the unit this belongs to */ u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)); if (!u) - u = cgroup_unit_by_pid(m, si.si_pid); + u = manager_get_unit_by_pid(m, si.si_pid); /* And now, we actually reap the zombie. */ if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { @@ -1381,7 +1492,7 @@ static int manager_process_signal_fd(Manager *m) { case SIGINT: if (m->running_as == SYSTEMD_SYSTEM) { - manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); + manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); break; } @@ -1677,6 +1788,14 @@ static int process_event(Manager *m, struct epoll_event *ev) { break; } + case WATCH_IDLE_PIPE: { + m->no_console_output = m->n_on_console > 0; + + manager_unwatch_idle_pipe(m); + close_idle_pipe(m); + break; + } + default: log_error("event type=%i", w->type); assert_not_reached("Unknown epoll event type."); @@ -1700,7 +1819,7 @@ int manager_loop(Manager *m) { 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; @@ -1723,16 +1842,19 @@ int manager_loop(Manager *m) { if (manager_dispatch_load_queue(m) > 0) continue; - if (manager_dispatch_run_queue(m) > 0) + if (manager_dispatch_gc_queue(m) > 0) continue; - if (bus_dispatch(m) > 0) + if (manager_dispatch_cleanup_queue(m) > 0) continue; - if (manager_dispatch_cleanup_queue(m) > 0) + if (manager_dispatch_cgroup_queue(m) > 0) continue; - if (manager_dispatch_gc_queue(m) > 0) + if (manager_dispatch_run_queue(m) > 0) + continue; + + if (bus_dispatch(m) > 0) continue; if (manager_dispatch_dbus_queue(m) > 0) @@ -1770,7 +1892,7 @@ int manager_loop(Manager *m) { } int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { - char *n; + _cleanup_free_ char *n = NULL; Unit *u; int r; @@ -1778,16 +1900,11 @@ int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Un assert(s); assert(_u); - if (!startswith(s, "/org/freedesktop/systemd1/unit/")) - return -EINVAL; - - n = bus_path_unescape(s+31); - if (!n) - return -ENOMEM; + r = unit_name_from_dbus_path(s, &n); + if (r < 0) + return r; r = manager_load_unit(m, n, NULL, e, &u); - free(n); - if (r < 0) return r; @@ -1968,7 +2085,7 @@ void manager_dispatch_bus_query_pid_done( int manager_open_serialization(Manager *m, FILE **_f) { char *path = NULL; - int fd; + int fd = -1; FILE *f; assert(_f); @@ -2004,7 +2121,7 @@ int manager_open_serialization(Manager *m, FILE **_f) { return 0; } -int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { +int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { Iterator i; Unit *u; const char *t; @@ -2032,14 +2149,18 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); } - STRV_FOREACH(e, m->environment) { - _cleanup_free_ char *ce; + if (!switching_root) { + STRV_FOREACH(e, m->environment) { + _cleanup_free_ char *ce; - ce = cescape(*e); - if (ce) - fprintf(f, "env=%s\n", *e); + ce = cescape(*e); + if (ce) + fprintf(f, "env=%s\n", *e); + } } + bus_serialize(m, f); + fputc('\n', f); HASHMAP_FOREACH_KEY(u, t, m->units, i) { @@ -2053,7 +2174,8 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { fputs(u->id, f); fputc('\n', f); - if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) { + r = unit_serialize(u, f, fds, !switching_root); + if (r < 0) { m->n_reloading --; return r; } @@ -2158,7 +2280,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { strv_free(m->environment); m->environment = e; - } else + } else if (bus_deserialize_item(m, l) == 0) log_debug("Unknown serialization item '%s'", l); } @@ -2199,32 +2321,10 @@ finish: return r; } -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_reload(Manager *m) { int r, q; - FILE *f; - FDSet *fds; + _cleanup_fclose_ FILE *f = NULL; + _cleanup_fdset_free_ FDSet *fds = NULL; assert(m); @@ -2233,24 +2333,23 @@ int manager_reload(Manager *m) { return r; m->n_reloading ++; + bus_broadcast_reloading(m, true); fds = fdset_new(); if (!fds) { m->n_reloading --; - r = -ENOMEM; - goto finish; + return -ENOMEM; } - r = manager_serialize(m, f, fds, true); + 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. */ @@ -2292,12 +2391,7 @@ int manager_reload(Manager *m) { 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; } @@ -2335,7 +2429,7 @@ 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); @@ -2346,7 +2440,7 @@ bool manager_unit_pending_inactive(Manager *m, const char *name) { if (!u) return true; - return unit_pending_inactive(u); + return unit_inactive_or_pending(u); } void manager_check_finished(Manager *m) { @@ -2364,7 +2458,8 @@ void manager_check_finished(Manager *m) { } /* Notify Type=idle units that we are done now */ - close_pipe(m->idle_pipe); + manager_unwatch_idle_pipe(m); + close_idle_pipe(m); /* Turn off confirm spawn now */ m->confirm_spawn = false; @@ -2566,19 +2661,16 @@ void manager_undo_generators(Manager *m) { remove_generator_dir(m, &m->generator_unit_path_late); } -int manager_set_default_controllers(Manager *m, char **controllers) { - char **l; - +int manager_environment_add(Manager *m, char **environment) { + char **e = NULL; assert(m); - l = strv_copy(controllers); - if (!l) + e = strv_env_merge(2, m->environment, environment); + if (!e) return -ENOMEM; - strv_free(m->default_controllers); - m->default_controllers = l; - - cg_shorten_controllers(m->default_controllers); + strv_free(m->environment); + m->environment = e; return 0; } @@ -2645,6 +2737,9 @@ static bool manager_get_show_status(Manager *m) { if (m->running_as != SYSTEMD_SYSTEM) return false; + if (m->no_console_output) + return false; + if (m->show_status) return true; @@ -2673,6 +2768,41 @@ void manager_status_printf(Manager *m, bool ephemeral, const char *status, const 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); +} + void watch_init(Watch *w) { assert(w);