/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see . ***/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "log.h" #include "util.h" #include "macro.h" #include "set.h" #include "utmp-wtmp.h" #include "special.h" #include "initreq.h" #include "path-util.h" #include "strv.h" #include "dbus-common.h" #include "cgroup-show.h" #include "cgroup-util.h" #include "list.h" #include "path-lookup.h" #include "conf-parser.h" #include "exit-status.h" #include "bus-errors.h" #include "build.h" #include "unit-name.h" #include "pager.h" #include "spawn-ask-password-agent.h" #include "spawn-polkit-agent.h" #include "install.h" #include "logs-show.h" #include "path-util.h" #include "socket-util.h" static const char *arg_type = NULL; static const char *arg_load_state = NULL; static char **arg_property = NULL; static bool arg_all = false; static const char *arg_job_mode = "replace"; static UnitFileScope arg_scope = UNIT_FILE_SYSTEM; static bool arg_no_block = false; static bool arg_no_legend = false; static bool arg_no_pager = false; static bool arg_no_wtmp = false; static bool arg_no_wall = false; static bool arg_no_reload = false; static bool arg_dry = false; static bool arg_quiet = false; static bool arg_full = false; static int arg_force = 0; static bool arg_ask_password = true; static bool arg_failed = false; static bool arg_runtime = false; static char **arg_wall = NULL; static const char *arg_kill_who = NULL; static int arg_signal = SIGTERM; static const char *arg_root = NULL; static usec_t arg_when = 0; static enum action { ACTION_INVALID, ACTION_SYSTEMCTL, ACTION_HALT, ACTION_POWEROFF, ACTION_REBOOT, ACTION_KEXEC, ACTION_EXIT, ACTION_SUSPEND, ACTION_HIBERNATE, ACTION_RUNLEVEL2, ACTION_RUNLEVEL3, ACTION_RUNLEVEL4, ACTION_RUNLEVEL5, ACTION_RESCUE, ACTION_EMERGENCY, ACTION_DEFAULT, ACTION_RELOAD, ACTION_REEXEC, ACTION_RUNLEVEL, ACTION_CANCEL_SHUTDOWN, _ACTION_MAX } arg_action = ACTION_SYSTEMCTL; static enum dot { DOT_ALL, DOT_ORDER, DOT_REQUIRE } arg_dot = DOT_ALL; static enum transport { TRANSPORT_NORMAL, TRANSPORT_SSH, TRANSPORT_POLKIT } arg_transport = TRANSPORT_NORMAL; static const char *arg_host = NULL; static bool arg_follow = false; static unsigned arg_lines = 10; static OutputMode arg_output = OUTPUT_SHORT; static bool private_bus = false; static int daemon_reload(DBusConnection *bus, char **args); static void halt_now(enum action a); static bool on_tty(void) { static int t = -1; /* Note that this is invoked relatively early, before we start * the pager. That means the value we return reflects whether * we originally were started on a tty, not if we currently * are. But this is intended, since we want colour and so on * when run in our own pager. */ if (_unlikely_(t < 0)) t = isatty(STDOUT_FILENO) > 0; return t; } static void pager_open_if_enabled(void) { /* Cache result before we open the pager */ on_tty(); if (arg_no_pager) return; pager_open(); } static void ask_password_agent_open_if_enabled(void) { /* Open the password agent as a child process if necessary */ if (!arg_ask_password) return; if (arg_scope != UNIT_FILE_SYSTEM) return; ask_password_agent_open(); } #ifdef HAVE_LOGIND static void polkit_agent_open_if_enabled(void) { /* Open the polkit agent as a child process if necessary */ if (!arg_ask_password) return; if (arg_scope != UNIT_FILE_SYSTEM) return; polkit_agent_open(); } #endif static const char *ansi_highlight_red(bool b) { if (!on_tty()) return ""; return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF; } static const char *ansi_highlight_green(bool b) { if (!on_tty()) return ""; return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF; } static int translate_bus_error_to_exit_status(int r, const DBusError *error) { assert(error); if (!dbus_error_is_set(error)) return r; if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) || dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) || dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) || dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE)) return EXIT_NOPERMISSION; if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT)) return EXIT_NOTINSTALLED; if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) || dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED)) return EXIT_NOTIMPLEMENTED; if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) return EXIT_NOTCONFIGURED; if (r != 0) return r; return EXIT_FAILURE; } static void warn_wall(enum action a) { static const char *table[_ACTION_MAX] = { [ACTION_HALT] = "The system is going down for system halt NOW!", [ACTION_REBOOT] = "The system is going down for reboot NOW!", [ACTION_POWEROFF] = "The system is going down for power-off NOW!", [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!", [ACTION_RESCUE] = "The system is going down to rescue mode NOW!", [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!", [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!" }; if (arg_no_wall) return; if (arg_wall) { char *p; p = strv_join(arg_wall, " "); if (!p) { log_error("Failed to join strings."); return; } if (*p) { utmp_wall(p, NULL); free(p); return; } free(p); } if (!table[a]) return; utmp_wall(table[a], NULL); } static bool avoid_bus(void) { if (running_in_chroot() > 0) return true; if (sd_booted() <= 0) return true; if (!isempty(arg_root)) return true; if (arg_scope == UNIT_FILE_GLOBAL) return true; return false; } struct unit_info { const char *id; const char *description; const char *load_state; const char *active_state; const char *sub_state; const char *following; const char *unit_path; uint32_t job_id; const char *job_type; const char *job_path; }; static int compare_unit_info(const void *a, const void *b) { const char *d1, *d2; const struct unit_info *u = a, *v = b; d1 = strrchr(u->id, '.'); d2 = strrchr(v->id, '.'); if (d1 && d2) { int r; if ((r = strcasecmp(d1, d2)) != 0) return r; } return strcasecmp(u->id, v->id); } static bool output_show_unit(const struct unit_info *u) { const char *dot; if (arg_failed) return streq(u->active_state, "failed"); return (!arg_type || ((dot = strrchr(u->id, '.')) && streq(dot+1, arg_type))) && (!arg_load_state || streq(u->load_state, arg_load_state)) && (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0); } static void output_units_list(const struct unit_info *unit_infos, unsigned c) { unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0; const struct unit_info *u; max_id_len = sizeof("UNIT")-1; active_len = sizeof("ACTIVE")-1; sub_len = sizeof("SUB")-1; job_len = sizeof("JOB")-1; desc_len = 0; for (u = unit_infos; u < unit_infos + c; u++) { if (!output_show_unit(u)) continue; max_id_len = MAX(max_id_len, strlen(u->id)); active_len = MAX(active_len, strlen(u->active_state)); sub_len = MAX(sub_len, strlen(u->sub_state)); if (u->job_id != 0) job_len = MAX(job_len, strlen(u->job_type)); } if (!arg_full) { unsigned basic_len; id_len = MIN(max_id_len, 25); basic_len = 5 + id_len + 6 + active_len + sub_len + job_len; if (basic_len < (unsigned) columns()) { unsigned extra_len, incr; extra_len = columns() - basic_len; /* Either UNIT already got 25, or is fully satisfied. * Grant up to 25 to DESC now. */ incr = MIN(extra_len, 25); desc_len += incr; extra_len -= incr; /* split the remaining space between UNIT and DESC, * but do not give UNIT more than it needs. */ if (extra_len > 0) { incr = MIN(extra_len / 2, max_id_len - id_len); id_len += incr; desc_len += extra_len - incr; } } } else id_len = max_id_len; if (!arg_no_legend) { printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD", active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB"); if (!arg_full && arg_no_pager) printf("%.*s\n", desc_len, "DESCRIPTION"); else printf("%s\n", "DESCRIPTION"); } for (u = unit_infos; u < unit_infos + c; u++) { char *e; const char *on_loaded, *off_loaded; const char *on_active, *off_active; if (!output_show_unit(u)) continue; n_shown++; if (streq(u->load_state, "error")) { on_loaded = ansi_highlight_red(true); off_loaded = ansi_highlight_red(false); } else on_loaded = off_loaded = ""; if (streq(u->active_state, "failed")) { on_active = ansi_highlight_red(true); off_active = ansi_highlight_red(false); } else on_active = off_active = ""; e = arg_full ? NULL : ellipsize(u->id, id_len, 33); printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ", id_len, e ? e : u->id, on_loaded, u->load_state, off_loaded, on_active, active_len, u->active_state, sub_len, u->sub_state, off_active, job_len, u->job_id ? u->job_type : ""); if (!arg_full && arg_no_pager) printf("%.*s\n", desc_len, u->description); else printf("%s\n", u->description); free(e); } if (!arg_no_legend) { printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n" "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n" "SUB = The low-level unit activation state, values depend on unit type.\n" "JOB = Pending job for the unit.\n"); if (arg_all) printf("\n%u loaded units listed.\n" "To show all installed unit files use 'systemctl list-unit-files'.\n", n_shown); else printf("\n%u loaded units listed. Pass --all to see loaded but inactive units, too.\n" "To show all installed unit files use 'systemctl list-unit-files'.\n", n_shown); } } static int list_units(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r; DBusMessageIter iter, sub, sub2; unsigned c = 0, n_units = 0; struct unit_info *unit_infos = NULL; pager_open_if_enabled(); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "ListUnits", &reply, NULL, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { struct unit_info *u; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if (c >= n_units) { struct unit_info *w; n_units = MAX(2*c, 16); w = realloc(unit_infos, sizeof(struct unit_info) * n_units); if (!w) { log_error("Failed to allocate unit array."); r = -ENOMEM; goto finish; } unit_infos = w; } u = unit_infos+c; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_next(&sub); c++; } if (c > 0) { qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info); output_units_list(unit_infos, c); } finish: if (reply) dbus_message_unref(reply); free(unit_infos); return r; } static int compare_unit_file_list(const void *a, const void *b) { const char *d1, *d2; const UnitFileList *u = a, *v = b; d1 = strrchr(u->path, '.'); d2 = strrchr(v->path, '.'); if (d1 && d2) { int r; r = strcasecmp(d1, d2); if (r != 0) return r; } return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path)); } static bool output_show_unit_file(const UnitFileList *u) { const char *dot; return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type)); } static void output_unit_file_list(const UnitFileList *units, unsigned c) { unsigned max_id_len, id_cols, state_cols, n_shown = 0; const UnitFileList *u; max_id_len = sizeof("UNIT FILE")-1; state_cols = sizeof("STATE")-1; for (u = units; u < units + c; u++) { if (!output_show_unit_file(u)) continue; max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path))); state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state))); } if (!arg_full) { unsigned basic_cols; id_cols = MIN(max_id_len, 25); basic_cols = 1 + id_cols + state_cols; if (basic_cols < (unsigned) columns()) id_cols += MIN(columns() - basic_cols, max_id_len - id_cols); } else id_cols = max_id_len; if (!arg_no_legend) printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE"); for (u = units; u < units + c; u++) { char *e; const char *on, *off; const char *id; if (!output_show_unit_file(u)) continue; n_shown++; if (u->state == UNIT_FILE_MASKED || u->state == UNIT_FILE_MASKED_RUNTIME || u->state == UNIT_FILE_DISABLED || u->state == UNIT_FILE_INVALID) { on = ansi_highlight_red(true); off = ansi_highlight_red(false); } else if (u->state == UNIT_FILE_ENABLED) { on = ansi_highlight_green(true); off = ansi_highlight_green(false); } else on = off = ""; id = path_get_file_name(u->path); e = arg_full ? NULL : ellipsize(id, id_cols, 33); printf("%-*s %s%-*s%s\n", id_cols, e ? e : id, on, state_cols, unit_file_state_to_string(u->state), off); free(e); } if (!arg_no_legend) printf("\n%u unit files listed.\n", n_shown); } static int list_unit_files(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r; DBusMessageIter iter, sub, sub2; unsigned c = 0, n_units = 0; UnitFileList *units = NULL; pager_open_if_enabled(); if (avoid_bus()) { Hashmap *h; UnitFileList *u; Iterator i; h = hashmap_new(string_hash_func, string_compare_func); if (!h) return log_oom(); r = unit_file_get_list(arg_scope, arg_root, h); if (r < 0) { unit_file_list_free(h); log_error("Failed to get unit file list: %s", strerror(-r)); return r; } n_units = hashmap_size(h); units = new(UnitFileList, n_units); if (!units) { unit_file_list_free(h); return log_oom(); } HASHMAP_FOREACH(u, h, i) { memcpy(units + c++, u, sizeof(UnitFileList)); free(u); } hashmap_free(h); } else { r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "ListUnitFiles", &reply, NULL, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { UnitFileList *u; const char *state; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if (c >= n_units) { UnitFileList *w; n_units = MAX(2*c, 16); w = realloc(units, sizeof(struct UnitFileList) * n_units); if (!w) { log_error("Failed to allocate unit array."); r = -ENOMEM; goto finish; } units = w; } u = units+c; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } u->state = unit_file_state_from_string(state); dbus_message_iter_next(&sub); c++; } } if (c > 0) { qsort(units, c, sizeof(UnitFileList), compare_unit_file_list); output_unit_file_list(units, c); } r = 0; finish: if (reply) dbus_message_unref(reply); free(units); return r; } static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) { static const char * const colors[] = { "Requires", "[color=\"black\"]", "RequiresOverridable", "[color=\"black\"]", "Requisite", "[color=\"darkblue\"]", "RequisiteOverridable", "[color=\"darkblue\"]", "Wants", "[color=\"grey66\"]", "Conflicts", "[color=\"red\"]", "ConflictedBy", "[color=\"red\"]", "After", "[color=\"green\"]" }; const char *c = NULL; unsigned i; assert(name); assert(prop); assert(iter); for (i = 0; i < ELEMENTSOF(colors); i += 2) if (streq(colors[i], prop)) { c = colors[i+1]; break; } if (!c) return 0; if (arg_dot != DOT_ALL) if ((arg_dot == DOT_ORDER) != streq(prop, "After")) return 0; switch (dbus_message_iter_get_arg_type(iter)) { case DBUS_TYPE_ARRAY: if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *s; assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING); dbus_message_iter_get_basic(&sub, &s); printf("\t\"%s\"->\"%s\" %s;\n", name, s, c); dbus_message_iter_next(&sub); } return 0; } } return 0; } static int dot_one(DBusConnection *bus, const char *name, const char *path) { DBusMessage *reply = NULL; const char *interface = "org.freedesktop.systemd1.Unit"; int r; DBusMessageIter iter, sub, sub2, sub3; assert(path); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.DBus.Properties", "GetAll", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *prop; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub2, &sub3); if (dot_one_property(name, prop, &sub3)) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_next(&sub); } finish: if (reply) dbus_message_unref(reply); return r; } static int dot(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r; DBusMessageIter iter, sub, sub2; r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "ListUnits", &reply, NULL, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } printf("digraph systemd {\n"); dbus_message_iter_recurse(&iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if ((r = dot_one(bus, id, unit_path)) < 0) goto finish; /* printf("\t\"%s\";\n", id); */ dbus_message_iter_next(&sub); } printf("}\n"); log_info(" Color legend: black = Requires\n" " dark blue = Requisite\n" " dark grey = Wants\n" " red = Conflicts\n" " green = After\n"); if (on_tty()) log_notice("-- You probably want to process this output with graphviz' dot tool.\n" "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n"); r = 0; finish: if (reply) dbus_message_unref(reply); return r; } static int list_jobs(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r; DBusMessageIter iter, sub, sub2; unsigned k = 0; pager_open_if_enabled(); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "ListJobs", &reply, NULL, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); if (on_tty()) printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE"); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *name, *type, *state, *job_path, *unit_path; uint32_t id; char *e; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } e = arg_full ? NULL : ellipsize(name, 25, 33); printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state); free(e); k++; dbus_message_iter_next(&sub); } if (on_tty()) printf("\n%u jobs listed.\n", k); r = 0; finish: if (reply) dbus_message_unref(reply); return r; } static int load_unit(DBusConnection *bus, char **args) { int r = 0; char **name, *n; assert(args); STRV_FOREACH(name, args+1) { n = unit_name_mangle(*name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "LoadUnit", NULL, NULL, DBUS_TYPE_STRING, n ? &n : name, DBUS_TYPE_INVALID); free(n); if (r) goto finish; } finish: return r; } static int cancel_job(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r = 0; char **name; assert(args); if (strv_length(args) <= 1) return daemon_reload(bus, args); STRV_FOREACH(name, args+1) { unsigned id; const char *path; r = safe_atou(*name, &id); if (r < 0) { log_error("Failed to parse job id: %s", strerror(-r)); goto finish; } assert_cc(sizeof(uint32_t) == sizeof(id)); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetJob", &reply, NULL, DBUS_TYPE_UINT32, &id, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_get_args(reply, NULL, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply"); dbus_message_unref(reply); r = -EIO; goto finish; } dbus_message_unref(reply); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Job", "Cancel", NULL, NULL, DBUS_TYPE_INVALID); if (r) goto finish; } finish: return r; } static bool need_daemon_reload(DBusConnection *bus, const char *unit) { DBusMessage *reply = NULL; dbus_bool_t b = FALSE; DBusMessageIter iter, sub; const char *interface = "org.freedesktop.systemd1.Unit", *property = "NeedDaemonReload", *path; char *n; int r; /* We ignore all errors here, since this is used to show a warning only */ n = unit_name_mangle(unit); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetUnit", &reply, NULL, DBUS_TYPE_STRING, n ? (const char**) &n : &unit, DBUS_TYPE_INVALID); free(n); if (r) goto finish; if (!dbus_message_get_args(reply, NULL, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto finish; dbus_message_unref(reply); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.DBus.Properties", "Get", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) goto finish; dbus_message_iter_recurse(&iter, &sub); if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN) goto finish; dbus_message_iter_get_basic(&sub, &b); finish: if (reply) dbus_message_unref(reply); return b; } typedef struct WaitData { Set *set; char *name; char *result; } WaitData; static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) { DBusError error; WaitData *d = data; assert(connection); assert(message); assert(d); dbus_error_init(&error); log_debug("Got D-Bus request: %s.%s() on %s", dbus_message_get_interface(message), dbus_message_get_member(message), dbus_message_get_path(message)); if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) { log_error("Warning! D-Bus connection terminated."); dbus_connection_close(connection); } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) { uint32_t id; const char *path, *result, *unit; dbus_bool_t success = true; if (dbus_message_get_args(message, &error, DBUS_TYPE_UINT32, &id, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_STRING, &unit, DBUS_TYPE_STRING, &result, DBUS_TYPE_INVALID)) { char *p; p = set_remove(d->set, (char*) path); free(p); if (!isempty(result)) d->result = strdup(result); if (!isempty(unit)) d->name = strdup(unit); goto finish; } #ifndef LEGACY dbus_error_free(&error); if (dbus_message_get_args(message, &error, DBUS_TYPE_UINT32, &id, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_STRING, &result, DBUS_TYPE_INVALID)) { char *p; /* Compatibility with older systemd versions < * 183 during upgrades. This should be dropped * one day. */ p = set_remove(d->set, (char*) path); free(p); if (*result) d->result = strdup(result); goto finish; } dbus_error_free(&error); if (dbus_message_get_args(message, &error, DBUS_TYPE_UINT32, &id, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_BOOLEAN, &success, DBUS_TYPE_INVALID)) { char *p; /* Compatibility with older systemd versions < * 19 during upgrades. This should be dropped * one day */ p = set_remove(d->set, (char*) path); free(p); if (!success) d->result = strdup("failed"); goto finish; } #endif log_error("Failed to parse message: %s", bus_error_message(&error)); } finish: dbus_error_free(&error); return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; } static int enable_wait_for_jobs(DBusConnection *bus) { DBusError error; assert(bus); if (private_bus) return 0; dbus_error_init(&error); dbus_bus_add_match(bus, "type='signal'," "sender='org.freedesktop.systemd1'," "interface='org.freedesktop.systemd1.Manager'," "member='JobRemoved'," "path='/org/freedesktop/systemd1'", &error); if (dbus_error_is_set(&error)) { log_error("Failed to add match: %s", bus_error_message(&error)); dbus_error_free(&error); return -EIO; } /* This is slightly dirty, since we don't undo the match registrations. */ return 0; } static int wait_for_jobs(DBusConnection *bus, Set *s) { int r = 0; WaitData d; assert(bus); assert(s); zero(d); d.set = s; if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) return log_oom(); while (!set_isempty(s)) { if (!dbus_connection_read_write_dispatch(bus, -1)) { log_error("Disconnected from bus."); return -ECONNREFUSED; } if (!d.result) goto free_name; if (!arg_quiet) { if (streq(d.result, "timeout")) log_error("Job for %s timed out.", strna(d.name)); else if (streq(d.result, "canceled")) log_error("Job for %s canceled.", strna(d.name)); else if (streq(d.result, "dependency")) log_error("A dependency job for %s failed. See 'journalctl' for details.", strna(d.name)); else if (!streq(d.result, "done") && !streq(d.result, "skipped")) log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl' for details.", strna(d.name), strna(d.name)); } if (streq_ptr(d.result, "timeout")) r = -ETIME; else if (streq_ptr(d.result, "canceled")) r = -ECANCELED; else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped")) r = -EIO; free(d.result); d.result = NULL; free_name: free(d.name); d.name = NULL; } dbus_connection_remove_filter(bus, wait_filter, &d); return r; } static int check_one_unit(DBusConnection *bus, char *name, bool quiet) { DBusMessage *reply = NULL; DBusMessageIter iter, sub; const char *interface = "org.freedesktop.systemd1.Unit", *property = "ActiveState"; const char *path = NULL; const char *state; int r; char *n; assert(name); n = unit_name_mangle(name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetUnit", &reply, NULL, DBUS_TYPE_STRING, n ? &n : &name, DBUS_TYPE_INVALID); free(n); if (r) { if ((r != -ENOMEM) && (!quiet)) puts("unknown"); goto finish; } if (!dbus_message_get_args(reply, NULL, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_unref(reply); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.DBus.Properties", "Get", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_get_basic(&sub, &state); if (!quiet) puts(state); if (streq(state, "active") || streq(state, "reloading")) r = 0; else r = 3; /* According to LSB: "program is not running" */ finish: if (reply) dbus_message_unref(reply); return r; } static void check_triggering_units( DBusConnection *bus, const char *unit_name) { DBusMessage _cleanup_dbus_msg_unref_ *reply = NULL; DBusMessageIter iter, sub; char *service_trigger = NULL; const char *interface = "org.freedesktop.systemd1.Unit", *triggered_by_property = "TriggeredBy"; char _cleanup_free_ *unit_path = NULL, *n = NULL; bool print_warning_label = true; int r; n = unit_name_mangle(unit_name); if (!n) { log_oom(); return; } unit_path = unit_dbus_path_from_name(n); if (!unit_path) { log_oom(); return; } r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", unit_path, "org.freedesktop.DBus.Properties", "Get", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &triggered_by_property, DBUS_TYPE_INVALID); if (r) return; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); return; } dbus_message_iter_recurse(&iter, &sub); dbus_message_iter_recurse(&sub, &iter); sub = iter; while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { log_error("Failed to parse reply."); return; } dbus_message_iter_get_basic(&sub, &service_trigger); r = check_one_unit(bus, service_trigger, true); if (r < 0) return; if (r == 0) { if (print_warning_label) { log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name); print_warning_label = false; } log_warning(" %s", service_trigger); } dbus_message_iter_next(&sub); } } static int start_unit_one( DBusConnection *bus, const char *method, const char *name, const char *mode, DBusError *error, Set *s) { DBusMessage _cleanup_dbus_msg_unref_ *reply = NULL; const char *path; int r; _cleanup_free_ char *n, *p = NULL; assert(method); assert(name); assert(mode); assert(error); n = unit_name_mangle(name); if (!n) return log_oom(); r = bus_method_call_with_reply( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", method, &reply, error, DBUS_TYPE_STRING, &n, DBUS_TYPE_STRING, &mode, DBUS_TYPE_INVALID); if (r) { if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL) /* There's always a fallback possible for * legacy actions. */ r = -EADDRNOTAVAIL; else log_error("Failed to issue method call: %s", bus_error_message(error)); return r; } if (!dbus_message_get_args(reply, error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(error)); return -EIO; } if (need_daemon_reload(bus, n)) log_warning("Warning: Unit file of %s changed on disk, 'systemctl %s daemon-reload' recommended.", n, arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user"); if (s) { p = strdup(path); if (!p) return log_oom(); r = set_put(s, p); if (r < 0) { log_error("Failed to add path to set."); return r; } p = NULL; } /* When stopping a unit warn if it can still be triggered by * another active unit (socket, path, timer) */ if (!arg_quiet && streq(method, "StopUnit")) check_triggering_units(bus, name); return 0; } static enum action verb_to_action(const char *verb) { if (streq(verb, "halt")) return ACTION_HALT; else if (streq(verb, "poweroff")) return ACTION_POWEROFF; else if (streq(verb, "reboot")) return ACTION_REBOOT; else if (streq(verb, "kexec")) return ACTION_KEXEC; else if (streq(verb, "rescue")) return ACTION_RESCUE; else if (streq(verb, "emergency")) return ACTION_EMERGENCY; else if (streq(verb, "default")) return ACTION_DEFAULT; else if (streq(verb, "exit")) return ACTION_EXIT; else if (streq(verb, "suspend")) return ACTION_SUSPEND; else if (streq(verb, "hibernate")) return ACTION_HIBERNATE; else return ACTION_INVALID; } static int start_unit(DBusConnection *bus, char **args) { static const char * const table[_ACTION_MAX] = { [ACTION_HALT] = SPECIAL_HALT_TARGET, [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET, [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET, [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET, [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET, [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET, [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET, [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET, [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET, [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET, [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET, [ACTION_EXIT] = SPECIAL_EXIT_TARGET, [ACTION_SUSPEND] = SPECIAL_SUSPEND_TARGET, [ACTION_HIBERNATE] = SPECIAL_HIBERNATE_TARGET }; int r, ret = 0; const char *method, *mode, *one_name; Set *s = NULL; DBusError error; char **name; dbus_error_init(&error); assert(bus); ask_password_agent_open_if_enabled(); if (arg_action == ACTION_SYSTEMCTL) { method = streq(args[0], "stop") || streq(args[0], "condstop") ? "StopUnit" : streq(args[0], "reload") ? "ReloadUnit" : streq(args[0], "restart") ? "RestartUnit" : streq(args[0], "try-restart") || streq(args[0], "condrestart") ? "TryRestartUnit" : streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" : streq(args[0], "reload-or-try-restart") || streq(args[0], "condreload") || streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" : "StartUnit"; mode = (streq(args[0], "isolate") || streq(args[0], "rescue") || streq(args[0], "emergency")) ? "isolate" : arg_job_mode; one_name = table[verb_to_action(args[0])]; } else { assert(arg_action < ELEMENTSOF(table)); assert(table[arg_action]); method = "StartUnit"; mode = (arg_action == ACTION_EMERGENCY || arg_action == ACTION_RESCUE || arg_action == ACTION_RUNLEVEL2 || arg_action == ACTION_RUNLEVEL3 || arg_action == ACTION_RUNLEVEL4 || arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace"; one_name = table[arg_action]; } if (!arg_no_block) { ret = enable_wait_for_jobs(bus); if (ret < 0) { log_error("Could not watch jobs: %s", strerror(-ret)); goto finish; } s = set_new(string_hash_func, string_compare_func); if (!s) { ret = log_oom(); goto finish; } } if (one_name) { ret = start_unit_one(bus, method, one_name, mode, &error, s); if (ret < 0) ret = translate_bus_error_to_exit_status(ret, &error); } else { STRV_FOREACH(name, args+1) { r = start_unit_one(bus, method, *name, mode, &error, s); if (r < 0) { ret = translate_bus_error_to_exit_status(r, &error); dbus_error_free(&error); } } } if (!arg_no_block) { r = wait_for_jobs(bus, s); if (r < 0) { ret = r; goto finish; } } finish: set_free_free(s); dbus_error_free(&error); return ret; } /* Ask systemd-logind, which might grant access to unprivileged users * through PolicyKit */ static int reboot_with_logind(DBusConnection *bus, enum action a) { #ifdef HAVE_LOGIND const char *method; dbus_bool_t interactive = true; polkit_agent_open_if_enabled(); switch (a) { case ACTION_REBOOT: method = "Reboot"; break; case ACTION_POWEROFF: method = "PowerOff"; break; case ACTION_SUSPEND: method = "Suspend"; break; case ACTION_HIBERNATE: method = "Hibernate"; break; default: return -EINVAL; } return bus_method_call_with_reply ( bus, "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", method, NULL, NULL, DBUS_TYPE_BOOLEAN, &interactive, DBUS_TYPE_INVALID); #else return -ENOSYS; #endif } static int start_special(DBusConnection *bus, char **args) { enum action a; int r; assert(args); a = verb_to_action(args[0]); if (arg_force >= 2 && geteuid() != 0) { log_error("Must be root."); return -EPERM; } if (arg_force >= 2 && (a == ACTION_HALT || a == ACTION_POWEROFF || a == ACTION_REBOOT)) halt_now(a); if (arg_force >= 1 && (a == ACTION_HALT || a == ACTION_POWEROFF || a == ACTION_REBOOT || a == ACTION_KEXEC || a == ACTION_EXIT)) return daemon_reload(bus, args); /* first try logind, to allow authentication with polkit */ if (geteuid() != 0 && (a == ACTION_POWEROFF || a == ACTION_REBOOT || a == ACTION_SUSPEND || a == ACTION_HIBERNATE)) { r = reboot_with_logind(bus, a); if (r >= 0) return r; } r = start_unit(bus, args); if (r >= 0) warn_wall(a); return r; } static int check_unit(DBusConnection *bus, char **args) { char **name; int r = 3; /* According to LSB: "program is not running" */ assert(bus); assert(args); STRV_FOREACH(name, args+1) { int state = check_one_unit(bus, *name, arg_quiet); if (state < 0) return state; if (state == 0) r = 0; } return r; } static int kill_unit(DBusConnection *bus, char **args) { int r = 0; char **name, *n; assert(args); if (!arg_kill_who) arg_kill_who = "all"; STRV_FOREACH(name, args+1) { n = unit_name_mangle(*name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "KillUnit", NULL, NULL, DBUS_TYPE_STRING, n ? &n : name, DBUS_TYPE_STRING, &arg_kill_who, DBUS_TYPE_INT32, &arg_signal, DBUS_TYPE_INVALID); free(n); if (r) return r; } return 0; } typedef struct ExecStatusInfo { char *name; char *path; char **argv; bool ignore; usec_t start_timestamp; usec_t exit_timestamp; pid_t pid; int code; int status; LIST_FIELDS(struct ExecStatusInfo, exec); } ExecStatusInfo; static void exec_status_info_free(ExecStatusInfo *i) { assert(i); free(i->name); free(i->path); strv_free(i->argv); free(i); } static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) { uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic; DBusMessageIter sub2, sub3; const char*path; unsigned n; uint32_t pid; int32_t code, status; dbus_bool_t ignore; assert(i); assert(i); if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT) return -EIO; dbus_message_iter_recurse(sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0) return -EIO; if (!(i->path = strdup(path))) return -ENOMEM; if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING) return -EIO; n = 0; dbus_message_iter_recurse(&sub2, &sub3); while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) { assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING); dbus_message_iter_next(&sub3); n++; } if (!(i->argv = new0(char*, n+1))) return -ENOMEM; n = 0; dbus_message_iter_recurse(&sub2, &sub3); while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) { const char *s; assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING); dbus_message_iter_get_basic(&sub3, &s); dbus_message_iter_next(&sub3); if (!(i->argv[n++] = strdup(s))) return -ENOMEM; } if (!dbus_message_iter_next(&sub2) || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0) return -EIO; i->ignore = ignore; i->start_timestamp = (usec_t) start_timestamp; i->exit_timestamp = (usec_t) exit_timestamp; i->pid = (pid_t) pid; i->code = code; i->status = status; return 0; } typedef struct UnitStatusInfo { const char *id; const char *load_state; const char *active_state; const char *sub_state; const char *unit_file_state; const char *description; const char *following; char **documentation; const char *fragment_path; const char *source_path; const char *default_control_group; const char *load_error; const char *result; usec_t inactive_exit_timestamp; usec_t inactive_exit_timestamp_monotonic; usec_t active_enter_timestamp; usec_t active_exit_timestamp; usec_t inactive_enter_timestamp; bool need_daemon_reload; /* Service */ pid_t main_pid; pid_t control_pid; const char *status_text; bool running:1; usec_t start_timestamp; usec_t exit_timestamp; int exit_code, exit_status; usec_t condition_timestamp; bool condition_result; /* Socket */ unsigned n_accepted; unsigned n_connections; bool accept; /* Device */ const char *sysfs_path; /* Mount, Automount */ const char *where; /* Swap */ const char *what; LIST_HEAD(ExecStatusInfo, exec); } UnitStatusInfo; static void print_status_info(UnitStatusInfo *i) { ExecStatusInfo *p; const char *on, *off, *ss; usec_t timestamp; char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1; char since2[FORMAT_TIMESTAMP_MAX], *s2; const char *path; assert(i); /* This shows pretty information about a unit. See * print_property() for a low-level property printer */ printf("%s", strna(i->id)); if (i->description && !streq_ptr(i->id, i->description)) printf(" - %s", i->description); printf("\n"); if (i->following) printf("\t Follow: unit currently follows state of %s\n", i->following); if (streq_ptr(i->load_state, "error")) { on = ansi_highlight_red(true); off = ansi_highlight_red(false); } else on = off = ""; path = i->source_path ? i->source_path : i->fragment_path; if (i->load_error) printf("\t Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error); else if (path && i->unit_file_state) printf("\t Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, path, i->unit_file_state); else if (path) printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, path); else printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off); ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state; if (streq_ptr(i->active_state, "failed")) { on = ansi_highlight_red(true); off = ansi_highlight_red(false); } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) { on = ansi_highlight_green(true); off = ansi_highlight_green(false); } else on = off = ""; if (ss) printf("\t Active: %s%s (%s)%s", on, strna(i->active_state), ss, off); else printf("\t Active: %s%s%s", on, strna(i->active_state), off); if (!isempty(i->result) && !streq(i->result, "success")) printf(" (Result: %s)", i->result); timestamp = (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp : (streq_ptr(i->active_state, "inactive") || streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp : streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp : i->active_exit_timestamp; s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp); s2 = format_timestamp(since2, sizeof(since2), timestamp); if (s1) printf(" since %s; %s\n", s2, s1); else if (s2) printf(" since %s\n", s2); else printf("\n"); if (!i->condition_result && i->condition_timestamp > 0) { s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp); s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp); if (s1) printf("\t start condition failed at %s; %s\n", s2, s1); else if (s2) printf("\t start condition failed at %s\n", s2); } if (i->sysfs_path) printf("\t Device: %s\n", i->sysfs_path); if (i->where) printf("\t Where: %s\n", i->where); if (i->what) printf("\t What: %s\n", i->what); if (!strv_isempty(i->documentation)) { char **t; bool first = true; STRV_FOREACH(t, i->documentation) { if (first) { printf("\t Docs: %s\n", *t); first = false; } else printf("\t %s\n", *t); } } if (i->accept) printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections); LIST_FOREACH(exec, p, i->exec) { char *t; bool good; /* Only show exited processes here */ if (p->code == 0) continue; t = strv_join(p->argv, " "); printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t)); free(t); good = is_clean_exit_lsb(p->code, p->status, NULL); if (!good) { on = ansi_highlight_red(true); off = ansi_highlight_red(false); } else on = off = ""; printf("%s(code=%s, ", on, sigchld_code_to_string(p->code)); if (p->code == CLD_EXITED) { const char *c; printf("status=%i", p->status); c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD); if (c) printf("/%s", c); } else printf("signal=%s", signal_to_string(p->status)); printf(")%s\n", off); if (i->main_pid == p->pid && i->start_timestamp == p->start_timestamp && i->exit_timestamp == p->start_timestamp) /* Let's not show this twice */ i->main_pid = 0; if (p->pid == i->control_pid) i->control_pid = 0; } if (i->main_pid > 0 || i->control_pid > 0) { printf("\t"); if (i->main_pid > 0) { printf("Main PID: %u", (unsigned) i->main_pid); if (i->running) { char *t = NULL; get_process_comm(i->main_pid, &t); if (t) { printf(" (%s)", t); free(t); } } else if (i->exit_code > 0) { printf(" (code=%s, ", sigchld_code_to_string(i->exit_code)); if (i->exit_code == CLD_EXITED) { const char *c; printf("status=%i", i->exit_status); c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD); if (c) printf("/%s", c); } else printf("signal=%s", signal_to_string(i->exit_status)); printf(")"); } } if (i->main_pid > 0 && i->control_pid > 0) printf(";"); if (i->control_pid > 0) { char *t = NULL; printf(" Control: %u", (unsigned) i->control_pid); get_process_comm(i->control_pid, &t); if (t) { printf(" (%s)", t); free(t); } } printf("\n"); } if (i->status_text) printf("\t Status: \"%s\"\n", i->status_text); if (i->default_control_group) { unsigned c; printf("\t CGroup: %s\n", i->default_control_group); if (arg_transport != TRANSPORT_SSH) { unsigned k = 0; pid_t extra[2]; c = columns(); if (c > 18) c -= 18; else c = 0; if (i->main_pid > 0) extra[k++] = i->main_pid; if (i->control_pid > 0) extra[k++] = i->control_pid; show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t ", c, false, arg_all, extra, k); } } if (i->id && arg_transport != TRANSPORT_SSH) { int flags = arg_all * OUTPUT_SHOW_ALL | arg_follow * OUTPUT_FOLLOW | !arg_quiet * OUTPUT_WARN_CUTOFF | on_tty() * OUTPUT_COLOR; printf("\n"); show_journal_by_unit(i->id, arg_output, 0, i->inactive_exit_timestamp_monotonic, arg_lines, flags); } if (i->need_daemon_reload) printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n", ansi_highlight_red(true), ansi_highlight_red(false), arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user"); } static void show_unit_help(UnitStatusInfo *i) { char **p; assert(i); if (!i->documentation) { log_info("Documentation for %s not known.", i->id); return; } STRV_FOREACH(p, i->documentation) { if (startswith(*p, "man:")) { size_t k; char *e = NULL; char *page = NULL, *section = NULL; const char *args[4] = { "man", NULL, NULL, NULL }; pid_t pid; k = strlen(*p); if ((*p)[k-1] == ')') e = strrchr(*p, '('); if (e) { page = strndup((*p) + 4, e - *p - 4); if (!page) { log_oom(); return; } section = strndup(e + 1, *p + k - e - 2); if (!section) { free(page); log_oom(); return; } args[1] = section; args[2] = page; } else args[1] = *p + 4; pid = fork(); if (pid < 0) { log_error("Failed to fork: %m"); free(page); free(section); continue; } if (pid == 0) { /* Child */ execvp(args[0], (char**) args); log_error("Failed to execute man: %m"); _exit(EXIT_FAILURE); } free(page); free(section); wait_for_terminate(pid, NULL); } else log_info("Can't show: %s", *p); } } static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) { assert(name); assert(iter); assert(i); switch (dbus_message_iter_get_arg_type(iter)) { case DBUS_TYPE_STRING: { const char *s; dbus_message_iter_get_basic(iter, &s); if (!isempty(s)) { if (streq(name, "Id")) i->id = s; else if (streq(name, "LoadState")) i->load_state = s; else if (streq(name, "ActiveState")) i->active_state = s; else if (streq(name, "SubState")) i->sub_state = s; else if (streq(name, "Description")) i->description = s; else if (streq(name, "FragmentPath")) i->fragment_path = s; else if (streq(name, "SourcePath")) i->source_path = s; else if (streq(name, "DefaultControlGroup")) i->default_control_group = s; else if (streq(name, "StatusText")) i->status_text = s; else if (streq(name, "SysFSPath")) i->sysfs_path = s; else if (streq(name, "Where")) i->where = s; else if (streq(name, "What")) i->what = s; else if (streq(name, "Following")) i->following = s; else if (streq(name, "UnitFileState")) i->unit_file_state = s; else if (streq(name, "Result")) i->result = s; } break; } case DBUS_TYPE_BOOLEAN: { dbus_bool_t b; dbus_message_iter_get_basic(iter, &b); if (streq(name, "Accept")) i->accept = b; else if (streq(name, "NeedDaemonReload")) i->need_daemon_reload = b; else if (streq(name, "ConditionResult")) i->condition_result = b; break; } case DBUS_TYPE_UINT32: { uint32_t u; dbus_message_iter_get_basic(iter, &u); if (streq(name, "MainPID")) { if (u > 0) { i->main_pid = (pid_t) u; i->running = true; } } else if (streq(name, "ControlPID")) i->control_pid = (pid_t) u; else if (streq(name, "ExecMainPID")) { if (u > 0) i->main_pid = (pid_t) u; } else if (streq(name, "NAccepted")) i->n_accepted = u; else if (streq(name, "NConnections")) i->n_connections = u; break; } case DBUS_TYPE_INT32: { int32_t j; dbus_message_iter_get_basic(iter, &j); if (streq(name, "ExecMainCode")) i->exit_code = (int) j; else if (streq(name, "ExecMainStatus")) i->exit_status = (int) j; break; } case DBUS_TYPE_UINT64: { uint64_t u; dbus_message_iter_get_basic(iter, &u); if (streq(name, "ExecMainStartTimestamp")) i->start_timestamp = (usec_t) u; else if (streq(name, "ExecMainExitTimestamp")) i->exit_timestamp = (usec_t) u; else if (streq(name, "ActiveEnterTimestamp")) i->active_enter_timestamp = (usec_t) u; else if (streq(name, "InactiveEnterTimestamp")) i->inactive_enter_timestamp = (usec_t) u; else if (streq(name, "InactiveExitTimestamp")) i->inactive_exit_timestamp = (usec_t) u; else if (streq(name, "InactiveExitTimestampMonotonic")) i->inactive_exit_timestamp_monotonic = (usec_t) u; else if (streq(name, "ActiveExitTimestamp")) i->active_exit_timestamp = (usec_t) u; else if (streq(name, "ConditionTimestamp")) i->condition_timestamp = (usec_t) u; break; } case DBUS_TYPE_ARRAY: { if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { ExecStatusInfo *info; int r; if (!(info = new0(ExecStatusInfo, 1))) return -ENOMEM; if (!(info->name = strdup(name))) { free(info); return -ENOMEM; } if ((r = exec_status_info_deserialize(&sub, info)) < 0) { free(info); return r; } LIST_PREPEND(ExecStatusInfo, exec, i->exec, info); dbus_message_iter_next(&sub); } } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING && streq(name, "Documentation")) { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) { const char *s; char **l; dbus_message_iter_get_basic(&sub, &s); l = strv_append(i->documentation, s); if (!l) return -ENOMEM; strv_free(i->documentation); i->documentation = l; dbus_message_iter_next(&sub); } } break; } case DBUS_TYPE_STRUCT: { if (streq(name, "LoadError")) { DBusMessageIter sub; const char *n, *message; int r; dbus_message_iter_recurse(iter, &sub); r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true); if (r < 0) return r; r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false); if (r < 0) return r; if (!isempty(message)) i->load_error = message; } break; } } return 0; } static int print_property(const char *name, DBusMessageIter *iter) { assert(name); assert(iter); /* This is a low-level property printer, see * print_status_info() for the nicer output */ if (arg_property && !strv_find(arg_property, name)) return 0; switch (dbus_message_iter_get_arg_type(iter)) { case DBUS_TYPE_STRUCT: { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) { uint32_t u; dbus_message_iter_get_basic(&sub, &u); if (u) printf("%s=%u\n", name, (unsigned) u); else if (arg_all) printf("%s=\n", name); return 0; } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) { const char *s; dbus_message_iter_get_basic(&sub, &s); if (arg_all || s[0]) printf("%s=%s\n", name, s); return 0; } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) { const char *a = NULL, *b = NULL; if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0) bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false); if (arg_all || !isempty(a) || !isempty(b)) printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b)); return 0; } break; } case DBUS_TYPE_ARRAY: if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) { DBusMessageIter sub, sub2; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { const char *path; dbus_bool_t ignore; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0) printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore)); dbus_message_iter_next(&sub); } return 0; } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) { DBusMessageIter sub, sub2; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { const char *type, *path; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) printf("%s=%s\n", type, path); dbus_message_iter_next(&sub); } return 0; } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) { DBusMessageIter sub, sub2; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { const char *base; uint64_t value, next_elapse; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) { char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX]; printf("%s={ value=%s ; next_elapse=%s }\n", base, format_timespan(timespan1, sizeof(timespan1), value), format_timespan(timespan2, sizeof(timespan2), next_elapse)); } dbus_message_iter_next(&sub); } return 0; } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) { DBusMessageIter sub, sub2; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { const char *controller, *attr, *value; dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 && bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) { printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n", controller, attr, value); } dbus_message_iter_next(&sub); } return 0; } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { ExecStatusInfo info; zero(info); if (exec_status_info_deserialize(&sub, &info) >= 0) { char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX]; char *t; t = strv_join(info.argv, " "); printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n", name, strna(info.path), strna(t), yes_no(info.ignore), strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)), strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)), (unsigned) info. pid, sigchld_code_to_string(info.code), info.status, info.code == CLD_EXITED ? "" : "/", strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status))); free(t); } free(info.path); strv_free(info.argv); dbus_message_iter_next(&sub); } return 0; } break; } if (generic_print_property(name, iter, arg_all) > 0) return 0; if (arg_all) printf("%s=[unprintable]\n", name); return 0; } static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) { DBusMessage *reply = NULL; const char *interface = ""; int r; DBusMessageIter iter, sub, sub2, sub3; UnitStatusInfo info; ExecStatusInfo *p; assert(path); assert(new_line); zero(info); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.DBus.Properties", "GetAll", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); if (*new_line) printf("\n"); *new_line = true; while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *name; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub2, &sub3); if (show_properties) r = print_property(name, &sub3); else r = status_property(name, &sub3, &info); if (r < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_next(&sub); } r = 0; if (!show_properties) { if (streq(verb, "help")) show_unit_help(&info); else print_status_info(&info); } strv_free(info.documentation); if (!streq_ptr(info.active_state, "active") && !streq_ptr(info.active_state, "reloading") && streq(verb, "status")) /* According to LSB: "program not running" */ r = 3; while ((p = info.exec)) { LIST_REMOVE(ExecStatusInfo, exec, info.exec, p); exec_status_info_free(p); } finish: if (reply) dbus_message_unref(reply); return r; } static int show_one_by_pid(const char *verb, DBusConnection *bus, uint32_t pid, bool *new_line) { DBusMessage *reply = NULL; const char *path = NULL; DBusError error; int r; dbus_error_init(&error); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetUnitByPID", &reply, NULL, DBUS_TYPE_UINT32, &pid, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(&error)); r = -EIO; goto finish; } r = show_one(verb, bus, path, false, new_line); finish: if (reply) dbus_message_unref(reply); dbus_error_free(&error); return r; } static int show(DBusConnection *bus, char **args) { int r, ret = 0; bool show_properties, new_line = false; char **name; assert(bus); assert(args); show_properties = streq(args[0], "show"); if (show_properties) pager_open_if_enabled(); if (show_properties && strv_length(args) <= 1) { /* If not argument is specified inspect the manager * itself */ return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line); } STRV_FOREACH(name, args+1) { uint32_t id; if (safe_atou32(*name, &id) < 0) { char *p, *n; /* Interpret as unit name */ n = unit_name_mangle(*name); p = unit_dbus_path_from_name(n ? n : *name); free(n); if (!p) return log_oom(); r = show_one(args[0], bus, p, show_properties, &new_line); free(p); if (r != 0) ret = r; } else if (show_properties) { /* Interpret as job id */ char *p; if (asprintf(&p, "/org/freedesktop/systemd1/job/%u", id) < 0) return log_oom(); r = show_one(args[0], bus, p, show_properties, &new_line); free(p); if (r != 0) ret = r; } else { /* Interpret as PID */ r = show_one_by_pid(args[0], bus, id, &new_line); if (r != 0) ret = r; } } return ret; } static int dump(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; DBusError error; int r; const char *text; dbus_error_init(&error); pager_open_if_enabled(); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Dump", &reply, NULL, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_get_args(reply, &error, DBUS_TYPE_STRING, &text, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(&error)); r = -EIO; goto finish; } fputs(text, stdout); finish: if (reply) dbus_message_unref(reply); dbus_error_free(&error); return r; } static int snapshot(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; DBusError error; int r; dbus_bool_t cleanup = FALSE; DBusMessageIter iter, sub; const char *name = "", *path, *id, *interface = "org.freedesktop.systemd1.Unit", *property = "Id"; char *n; dbus_error_init(&error); if (strv_length(args) > 1) name = args[1]; n = unit_name_mangle(name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "CreateSnapshot", &reply, NULL, DBUS_TYPE_STRING, n ? (const char**) &n : &name, DBUS_TYPE_BOOLEAN, &cleanup, DBUS_TYPE_INVALID); free(n); if (r) goto finish; if (!dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(&error)); r = -EIO; goto finish; } dbus_message_unref(reply); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.DBus.Properties", "Get", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_get_basic(&sub, &id); if (!arg_quiet) puts(id); finish: if (reply) dbus_message_unref(reply); dbus_error_free(&error); return r; } static int delete_snapshot(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; int r = 0; DBusError error; char **name; assert(args); dbus_error_init(&error); STRV_FOREACH(name, args+1) { const char *path = NULL; char *n; n = unit_name_mangle(*name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetUnit", &reply, NULL, DBUS_TYPE_STRING, n ? &n : name, DBUS_TYPE_INVALID); free(n); if (r) goto finish; if (!dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(&error)); r = -EIO; dbus_message_unref(reply); dbus_error_free(&error); goto finish; } dbus_message_unref(reply); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Snapshot", "Remove", NULL, NULL, DBUS_TYPE_INVALID); if (r) goto finish; } finish: return r; } static int daemon_reload(DBusConnection *bus, char **args) { int r; const char *method; DBusError error; if (arg_action == ACTION_RELOAD) method = "Reload"; else if (arg_action == ACTION_REEXEC) method = "Reexecute"; else { assert(arg_action == ACTION_SYSTEMCTL); method = streq(args[0], "clear-jobs") || streq(args[0], "cancel") ? "ClearJobs" : streq(args[0], "daemon-reexec") ? "Reexecute" : streq(args[0], "reset-failed") ? "ResetFailed" : streq(args[0], "halt") ? "Halt" : streq(args[0], "poweroff") ? "PowerOff" : streq(args[0], "reboot") ? "Reboot" : streq(args[0], "kexec") ? "KExec" : streq(args[0], "exit") ? "Exit" : /* "daemon-reload" */ "Reload"; } r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", method, NULL, &error, DBUS_TYPE_INVALID); if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL) /* There's always a fallback possible for * legacy actions. */ r = -EADDRNOTAVAIL; else if (r == -ETIMEDOUT && streq(method, "Reexecute")) /* On reexecution, we expect a disconnect, not * a reply */ r = 0; else if (r) log_error("Failed to issue method call: %s", bus_error_message(&error)); dbus_error_free(&error); return r; } static int reset_failed(DBusConnection *bus, char **args) { int r = 0; char **name, *n; if (strv_length(args) <= 1) return daemon_reload(bus, args); STRV_FOREACH(name, args+1) { n = unit_name_mangle(*name); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "ResetFailedUnit", NULL, NULL, DBUS_TYPE_STRING, n ? &n : name, DBUS_TYPE_INVALID); free(n); if (r) goto finish; } finish: return r; } static int show_enviroment(DBusConnection *bus, char **args) { DBusMessage *reply = NULL; DBusMessageIter iter, sub, sub2; int r; const char *interface = "org.freedesktop.systemd1.Manager", *property = "Environment"; pager_open_if_enabled(); r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.DBus.Properties", "Get", &reply, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_iter_init(reply, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) { const char *text; if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_get_basic(&sub2, &text); printf("%s\n", text); dbus_message_iter_next(&sub2); } r = 0; finish: if (reply) dbus_message_unref(reply); return r; } static int switch_root(DBusConnection *bus, char **args) { unsigned l; const char *root, *init; l = strv_length(args); if (l < 2 || l > 3) { log_error("Wrong number of arguments."); return -EINVAL; } root = args[1]; init = l >= 3 ? args[2] : ""; return bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "SwitchRoot", NULL, NULL, DBUS_TYPE_STRING, &root, DBUS_TYPE_STRING, &init, DBUS_TYPE_INVALID); } static int set_environment(DBusConnection *bus, char **args) { DBusMessage *m = NULL, *reply = NULL; DBusError error; int r; const char *method; DBusMessageIter iter, sub; char **name; dbus_error_init(&error); method = streq(args[0], "set-environment") ? "SetEnvironment" : "UnsetEnvironment"; if (!(m = dbus_message_new_method_call( "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", method))) { log_error("Could not allocate message."); return -ENOMEM; } dbus_message_iter_init_append(m, &iter); if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) { log_error("Could not append arguments to message."); r = -ENOMEM; goto finish; } STRV_FOREACH(name, args+1) if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, name)) { log_error("Could not append arguments to message."); r = -ENOMEM; goto finish; } if (!dbus_message_iter_close_container(&iter, &sub)) { log_error("Could not append arguments to message."); r = -ENOMEM; goto finish; } if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) { log_error("Failed to issue method call: %s", bus_error_message(&error)); r = -EIO; goto finish; } r = 0; finish: if (m) dbus_message_unref(m); if (reply) dbus_message_unref(reply); dbus_error_free(&error); return r; } static int enable_sysv_units(char **args) { int r = 0; #if defined (HAVE_SYSV_COMPAT) && (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA) || defined(TARGET_SUSE) || defined(TARGET_ALTLINUX) || defined(TARGET_MAGEIA)) const char *verb = args[0]; unsigned f = 1, t = 1; LookupPaths paths; if (arg_scope != UNIT_FILE_SYSTEM) return 0; if (!streq(verb, "enable") && !streq(verb, "disable") && !streq(verb, "is-enabled")) return 0; /* Processes all SysV units, and reshuffles the array so that * afterwards only the native units remain */ zero(paths); r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL); if (r < 0) return r; r = 0; for (f = 1; args[f]; f++) { const char *name; char *p; bool found_native = false, found_sysv; unsigned c = 1; const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL }; char **k, *l, *q = NULL; int j; pid_t pid; siginfo_t status; name = args[f]; if (!endswith(name, ".service")) continue; if (path_is_absolute(name)) continue; STRV_FOREACH(k, paths.unit_path) { p = NULL; if (!isempty(arg_root)) asprintf(&p, "%s/%s/%s", arg_root, *k, name); else asprintf(&p, "%s/%s", *k, name); if (!p) { r = log_oom(); goto finish; } found_native = access(p, F_OK) >= 0; free(p); if (found_native) break; } if (found_native) continue; p = NULL; if (!isempty(arg_root)) asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name); else asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name); if (!p) { r = log_oom(); goto finish; } p[strlen(p) - sizeof(".service") + 1] = 0; found_sysv = access(p, F_OK) >= 0; if (!found_sysv) { free(p); continue; } /* Mark this entry, so that we don't try enabling it as native unit */ args[f] = (char*) ""; log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name); if (!isempty(arg_root)) argv[c++] = q = strappend("--root=", arg_root); argv[c++] = path_get_file_name(p); argv[c++] = streq(verb, "enable") ? "on" : streq(verb, "disable") ? "off" : "--level=5"; argv[c] = NULL; l = strv_join((char**)argv, " "); if (!l) { free(q); free(p); r = log_oom(); goto finish; } log_info("Executing %s", l); free(l); pid = fork(); if (pid < 0) { log_error("Failed to fork: %m"); free(p); free(q); r = -errno; goto finish; } else if (pid == 0) { /* Child */ execv(argv[0], (char**) argv); _exit(EXIT_FAILURE); } free(p); free(q); j = wait_for_terminate(pid, &status); if (j < 0) { log_error("Failed to wait for child: %s", strerror(-r)); r = j; goto finish; } if (status.si_code == CLD_EXITED) { if (streq(verb, "is-enabled")) { if (status.si_status == 0) { if (!arg_quiet) puts("enabled"); r = 1; } else { if (!arg_quiet) puts("disabled"); } } else if (status.si_status != 0) { r = -EINVAL; goto finish; } } else { r = -EPROTO; goto finish; } } finish: lookup_paths_free(&paths); /* Drop all SysV units */ for (f = 1, t = 1; args[f]; f++) { if (isempty(args[f])) continue; args[t++] = args[f]; } args[t] = NULL; #endif return r; } static int mangle_names(char **original_names, char ***mangled_names) { char **i, **l, **name; l = new(char*, strv_length(original_names) + 1); if (!l) return log_oom(); i = l; STRV_FOREACH(name, original_names) { *i = unit_name_mangle(*name); if (!*i) { strv_free(l); return log_oom(); } i++; } *i = NULL; *mangled_names = l; return 0; } static int enable_unit(DBusConnection *bus, char **args) { const char *verb = args[0]; UnitFileChange *changes = NULL; unsigned n_changes = 0, i; int carries_install_info = -1; DBusMessage *m = NULL, *reply = NULL; int r; DBusError error; char **mangled_names = NULL; r = enable_sysv_units(args); if (r < 0) return r; if (!args[1]) return 0; dbus_error_init(&error); if (!bus || avoid_bus()) { if (streq(verb, "enable")) { r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes); carries_install_info = r; } else if (streq(verb, "disable")) r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes); else if (streq(verb, "reenable")) { r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes); carries_install_info = r; } else if (streq(verb, "link")) r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes); else if (streq(verb, "preset")) { r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes); carries_install_info = r; } else if (streq(verb, "mask")) r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes); else if (streq(verb, "unmask")) r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes); else assert_not_reached("Unknown verb"); if (r < 0) { log_error("Operation failed: %s", strerror(-r)); goto finish; } if (!arg_quiet) { for (i = 0; i < n_changes; i++) { if (changes[i].type == UNIT_FILE_SYMLINK) log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path); else log_info("rm '%s'", changes[i].path); } } } else { const char *method; bool send_force = true, expect_carries_install_info = false; dbus_bool_t a, b; DBusMessageIter iter, sub, sub2; if (streq(verb, "enable")) { method = "EnableUnitFiles"; expect_carries_install_info = true; } else if (streq(verb, "disable")) { method = "DisableUnitFiles"; send_force = false; } else if (streq(verb, "reenable")) { method = "ReenableUnitFiles"; expect_carries_install_info = true; } else if (streq(verb, "link")) method = "LinkUnitFiles"; else if (streq(verb, "preset")) { method = "PresetUnitFiles"; expect_carries_install_info = true; } else if (streq(verb, "mask")) method = "MaskUnitFiles"; else if (streq(verb, "unmask")) { method = "UnmaskUnitFiles"; send_force = false; } else assert_not_reached("Unknown verb"); m = dbus_message_new_method_call( "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", method); if (!m) { r = log_oom(); goto finish; } dbus_message_iter_init_append(m, &iter); r = mangle_names(args+1, &mangled_names); if(r < 0) goto finish; r = bus_append_strv_iter(&iter, mangled_names); if (r < 0) { log_error("Failed to append unit files."); goto finish; } a = arg_runtime; if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) { log_error("Failed to append runtime boolean."); r = -ENOMEM; goto finish; } if (send_force) { b = arg_force; if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) { log_error("Failed to append force boolean."); r = -ENOMEM; goto finish; } } reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); if (!reply) { log_error("Failed to issue method call: %s", bus_error_message(&error)); r = -EIO; goto finish; } if (!dbus_message_iter_init(reply, &iter)) { log_error("Failed to initialize iterator."); goto finish; } if (expect_carries_install_info) { r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true); if (r < 0) { log_error("Failed to parse reply."); goto finish; } carries_install_info = b; } if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&iter, &sub); while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { const char *type, *path, *source; if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) { log_error("Failed to parse reply."); r = -EIO; goto finish; } dbus_message_iter_recurse(&sub, &sub2); if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 || bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) { log_error("Failed to parse reply."); r = -EIO; goto finish; } if (!arg_quiet) { if (streq(type, "symlink")) log_info("ln -s '%s' '%s'", source, path); else log_info("rm '%s'", path); } dbus_message_iter_next(&sub); } /* Try to reload if enabeld */ if (!arg_no_reload) r = daemon_reload(bus, args); } if (carries_install_info == 0) log_warning("The unit files have no [Install] section. They are not meant to be enabled using systemctl."); finish: if (m) dbus_message_unref(m); if (reply) dbus_message_unref(reply); unit_file_changes_free(changes, n_changes); dbus_error_free(&error); strv_free(mangled_names); return r; } static int unit_is_enabled(DBusConnection *bus, char **args) { DBusError error; int r; DBusMessage *reply = NULL; bool enabled; char **name; dbus_error_init(&error); r = enable_sysv_units(args); if (r < 0) return r; enabled = r > 0; if (!bus || avoid_bus()) { STRV_FOREACH(name, args+1) { UnitFileState state; state = unit_file_get_state(arg_scope, arg_root, *name); if (state < 0) { r = state; goto finish; } if (state == UNIT_FILE_ENABLED || state == UNIT_FILE_ENABLED_RUNTIME || state == UNIT_FILE_STATIC) enabled = true; if (!arg_quiet) puts(unit_file_state_to_string(state)); } } else { STRV_FOREACH(name, args+1) { const char *s; r = bus_method_call_with_reply ( bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "GetUnitFileState", &reply, NULL, DBUS_TYPE_STRING, name, DBUS_TYPE_INVALID); if (r) goto finish; if (!dbus_message_get_args(reply, &error, DBUS_TYPE_STRING, &s, DBUS_TYPE_INVALID)) { log_error("Failed to parse reply: %s", bus_error_message(&error)); r = -EIO; goto finish; } dbus_message_unref(reply); reply = NULL; if (streq(s, "enabled") || streq(s, "enabled-runtime") || streq(s, "static")) enabled = true; if (!arg_quiet) puts(s); } } r = enabled ? 0 : 1; finish: if (reply) dbus_message_unref(reply); dbus_error_free(&error); return r; } static int systemctl_help(void) { pager_open_if_enabled(); printf("%s [OPTIONS...] {COMMAND} ...\n\n" "Query or send control commands to the systemd manager.\n\n" " -h --help Show this help\n" " --version Show package version\n" " -t --type=TYPE List only units of a particular type\n" " -p --property=NAME Show only properties by this name\n" " -a --all Show all units/properties, including dead/empty ones\n" " --failed Show only failed units\n" " --full Don't ellipsize unit names on output\n" " --fail When queueing a new job, fail if conflicting jobs are\n" " pending\n" " --ignore-dependencies\n" " When queueing a new job, ignore all its dependencies\n" " --kill-who=WHO Who to send signal to\n" " -s --signal=SIGNAL Which signal to send\n" " -H --host=[USER@]HOST\n" " Show information for remote host\n" " -P --privileged Acquire privileges before execution\n" " -q --quiet Suppress output\n" " --no-block Do not wait until operation finished\n" " --no-wall Don't send wall message before halt/power-off/reboot\n" " --no-reload When enabling/disabling unit files, don't reload daemon\n" " configuration\n" " --no-legend Do not print a legend (column headers and hints)\n" " --no-pager Do not pipe output into a pager\n" " --no-ask-password\n" " Do not ask for system passwords\n" " --order When generating graph for dot, show only order\n" " --require When generating graph for dot, show only requirement\n" " --system Connect to system manager\n" " --user Connect to user service manager\n" " --global Enable/disable unit files globally\n" " -f --force When enabling unit files, override existing symlinks\n" " When shutting down, execute action immediately\n" " --root=PATH Enable unit files in the specified root directory\n" " --runtime Enable unit files only temporarily until next reboot\n" " -n --lines=INTEGER Journal entries to show\n" " --follow Follow journal\n" " -o --output=STRING Change journal output mode (short, short-monotonic,\n" " verbose, export, json, json-pretty, cat)\n\n" "Unit Commands:\n" " list-units List loaded units\n" " start [NAME...] Start (activate) one or more units\n" " stop [NAME...] Stop (deactivate) one or more units\n" " reload [NAME...] Reload one or more units\n" " restart [NAME...] Start or restart one or more units\n" " try-restart [NAME...] Restart one or more units if active\n" " reload-or-restart [NAME...] Reload one or more units is possible,\n" " otherwise start or restart\n" " reload-or-try-restart [NAME...] Reload one or more units is possible,\n" " otherwise restart if active\n" " isolate [NAME] Start one unit and stop all others\n" " kill [NAME...] Send signal to processes of a unit\n" " is-active [NAME...] Check whether units are active\n" " status [NAME...|PID...] Show runtime status of one or more units\n" " show [NAME...|JOB...] Show properties of one or more\n" " units/jobs or the manager\n" " help [NAME...|PID...] Show manual for one or more units\n" " reset-failed [NAME...] Reset failed state for all, one, or more\n" " units\n" " load [NAME...] Load one or more units\n\n" "Unit File Commands:\n" " list-unit-files List installed unit files\n" " enable [NAME...] Enable one or more unit files\n" " disable [NAME...] Disable one or more unit files\n" " reenable [NAME...] Reenable one or more unit files\n" " preset [NAME...] Enable/disable one or more unit files\n" " based on preset configuration\n" " mask [NAME...] Mask one or more units\n" " unmask [NAME...] Unmask one or more units\n" " link [PATH...] Link one or more units files into\n" " the search path\n" " is-enabled [NAME...] Check whether unit files are enabled\n\n" "Job Commands:\n" " list-jobs List jobs\n" " cancel [JOB...] Cancel all, one, or more jobs\n\n" "Status Commands:\n" " dump Dump server status\n" " dot Dump dependency graph for dot(1)\n\n" "Snapshot Commands:\n" " snapshot [NAME] Create a snapshot\n" " delete [NAME...] Remove one or more snapshots\n\n" "Environment Commands:\n" " show-environment Dump environment\n" " set-environment [NAME=VALUE...] Set one or more environment variables\n" " unset-environment [NAME...] Unset one or more environment variables\n\n" "Manager Lifecycle Commands:\n" " daemon-reload Reload systemd manager configuration\n" " daemon-reexec Reexecute systemd manager\n\n" "System Commands:\n" " default Enter system default mode\n" " rescue Enter system rescue mode\n" " emergency Enter system emergency mode\n" " halt Shut down and halt the system\n" " poweroff Shut down and power-off the system\n" " reboot Shut down and reboot the system\n" " kexec Shut down and reboot the system with kexec\n" " exit Request user instance exit\n" " switch-root [ROOT] [INIT] Change to a different root file system\n" " suspend Suspend the system\n" " hibernate Hibernate the system\n", program_invocation_short_name); return 0; } static int halt_help(void) { printf("%s [OPTIONS...]\n\n" "%s the system.\n\n" " --help Show this help\n" " --halt Halt the machine\n" " -p --poweroff Switch off the machine\n" " --reboot Reboot the machine\n" " -f --force Force immediate halt/power-off/reboot\n" " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n" " -d --no-wtmp Don't write wtmp record\n" " --no-wall Don't send wall message before halt/power-off/reboot\n", program_invocation_short_name, arg_action == ACTION_REBOOT ? "Reboot" : arg_action == ACTION_POWEROFF ? "Power off" : "Halt"); return 0; } static int shutdown_help(void) { printf("%s [OPTIONS...] [TIME] [WALL...]\n\n" "Shut down the system.\n\n" " --help Show this help\n" " -H --halt Halt the machine\n" " -P --poweroff Power-off the machine\n" " -r --reboot Reboot the machine\n" " -h Equivalent to --poweroff, overridden by --halt\n" " -k Don't halt/power-off/reboot, just send warnings\n" " --no-wall Don't send wall message before halt/power-off/reboot\n" " -c Cancel a pending shutdown\n", program_invocation_short_name); return 0; } static int telinit_help(void) { printf("%s [OPTIONS...] {COMMAND}\n\n" "Send control commands to the init daemon.\n\n" " --help Show this help\n" " --no-wall Don't send wall message before halt/power-off/reboot\n\n" "Commands:\n" " 0 Power-off the machine\n" " 6 Reboot the machine\n" " 2, 3, 4, 5 Start runlevelX.target unit\n" " 1, s, S Enter rescue mode\n" " q, Q Reload init daemon configuration\n" " u, U Reexecute init daemon\n", program_invocation_short_name); return 0; } static int runlevel_help(void) { printf("%s [OPTIONS...]\n\n" "Prints the previous and current runlevel of the init system.\n\n" " --help Show this help\n", program_invocation_short_name); return 0; } static int systemctl_parse_argv(int argc, char *argv[]) { enum { ARG_FAIL = 0x100, ARG_IGNORE_DEPENDENCIES, ARG_VERSION, ARG_USER, ARG_SYSTEM, ARG_GLOBAL, ARG_NO_BLOCK, ARG_NO_LEGEND, ARG_NO_PAGER, ARG_NO_WALL, ARG_ORDER, ARG_REQUIRE, ARG_ROOT, ARG_FULL, ARG_NO_RELOAD, ARG_KILL_WHO, ARG_NO_ASK_PASSWORD, ARG_FAILED, ARG_RUNTIME, ARG_FOLLOW, ARG_FORCE }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "type", required_argument, NULL, 't' }, { "property", required_argument, NULL, 'p' }, { "all", no_argument, NULL, 'a' }, { "failed", no_argument, NULL, ARG_FAILED }, { "full", no_argument, NULL, ARG_FULL }, { "fail", no_argument, NULL, ARG_FAIL }, { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES }, { "user", no_argument, NULL, ARG_USER }, { "system", no_argument, NULL, ARG_SYSTEM }, { "global", no_argument, NULL, ARG_GLOBAL }, { "no-block", no_argument, NULL, ARG_NO_BLOCK }, { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "no-wall", no_argument, NULL, ARG_NO_WALL }, { "quiet", no_argument, NULL, 'q' }, { "order", no_argument, NULL, ARG_ORDER }, { "require", no_argument, NULL, ARG_REQUIRE }, { "root", required_argument, NULL, ARG_ROOT }, { "force", no_argument, NULL, ARG_FORCE }, { "no-reload", no_argument, NULL, ARG_NO_RELOAD }, { "kill-who", required_argument, NULL, ARG_KILL_WHO }, { "signal", required_argument, NULL, 's' }, { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, { "host", required_argument, NULL, 'H' }, { "privileged",no_argument, NULL, 'P' }, { "runtime", no_argument, NULL, ARG_RUNTIME }, { "lines", required_argument, NULL, 'n' }, { "follow", no_argument, NULL, ARG_FOLLOW }, { "output", required_argument, NULL, 'o' }, { NULL, 0, NULL, 0 } }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:Pn:o:", options, NULL)) >= 0) { switch (c) { case 'h': systemctl_help(); return 0; case ARG_VERSION: puts(PACKAGE_STRING); puts(DISTRIBUTION); puts(SYSTEMD_FEATURES); return 0; case 't': if (unit_type_from_string(optarg) >= 0) { arg_type = optarg; break; } if (unit_load_state_from_string(optarg) >= 0) { arg_load_state = optarg; break; } log_error("Unkown unit type or load state '%s'.", optarg); return -EINVAL; case 'p': { char **l; if (!(l = strv_append(arg_property, optarg))) return -ENOMEM; strv_free(arg_property); arg_property = l; /* If the user asked for a particular * property, show it to him, even if it is * empty. */ arg_all = true; break; } case 'a': arg_all = true; break; case ARG_FAIL: arg_job_mode = "fail"; break; case ARG_IGNORE_DEPENDENCIES: arg_job_mode = "ignore-dependencies"; break; case ARG_USER: arg_scope = UNIT_FILE_USER; break; case ARG_SYSTEM: arg_scope = UNIT_FILE_SYSTEM; break; case ARG_GLOBAL: arg_scope = UNIT_FILE_GLOBAL; break; case ARG_NO_BLOCK: arg_no_block = true; break; case ARG_NO_LEGEND: arg_no_legend = true; break; case ARG_NO_PAGER: arg_no_pager = true; break; case ARG_NO_WALL: arg_no_wall = true; break; case ARG_ORDER: arg_dot = DOT_ORDER; break; case ARG_REQUIRE: arg_dot = DOT_REQUIRE; break; case ARG_ROOT: arg_root = optarg; break; case ARG_FULL: arg_full = true; break; case ARG_FAILED: arg_failed = true; break; case 'q': arg_quiet = true; break; case ARG_FORCE: arg_force ++; break; case ARG_FOLLOW: arg_follow = true; break; case 'f': /* -f is short for both --follow and --force! */ arg_force ++; arg_follow = true; break; case ARG_NO_RELOAD: arg_no_reload = true; break; case ARG_KILL_WHO: arg_kill_who = optarg; break; case 's': if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) { log_error("Failed to parse signal string %s.", optarg); return -EINVAL; } break; case ARG_NO_ASK_PASSWORD: arg_ask_password = false; break; case 'P': arg_transport = TRANSPORT_POLKIT; break; case 'H': arg_transport = TRANSPORT_SSH; arg_host = optarg; break; case ARG_RUNTIME: arg_runtime = true; break; case 'n': if (safe_atou(optarg, &arg_lines) < 0) { log_error("Failed to parse lines '%s'", optarg); return -EINVAL; } break; case 'o': arg_output = output_mode_from_string(optarg); if (arg_output < 0) { log_error("Unknown output '%s'.", optarg); return -EINVAL; } break; case '?': return -EINVAL; default: log_error("Unknown option code '%c'.", c); return -EINVAL; } } if (arg_transport != TRANSPORT_NORMAL && arg_scope != UNIT_FILE_SYSTEM) { log_error("Cannot access user instance remotely."); return -EINVAL; } return 1; } static int halt_parse_argv(int argc, char *argv[]) { enum { ARG_HELP = 0x100, ARG_HALT, ARG_REBOOT, ARG_NO_WALL }; static const struct option options[] = { { "help", no_argument, NULL, ARG_HELP }, { "halt", no_argument, NULL, ARG_HALT }, { "poweroff", no_argument, NULL, 'p' }, { "reboot", no_argument, NULL, ARG_REBOOT }, { "force", no_argument, NULL, 'f' }, { "wtmp-only", no_argument, NULL, 'w' }, { "no-wtmp", no_argument, NULL, 'd' }, { "no-wall", no_argument, NULL, ARG_NO_WALL }, { NULL, 0, NULL, 0 } }; int c, runlevel; assert(argc >= 0); assert(argv); if (utmp_get_runlevel(&runlevel, NULL) >= 0) if (runlevel == '0' || runlevel == '6') arg_force = 2; while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) { switch (c) { case ARG_HELP: halt_help(); return 0; case ARG_HALT: arg_action = ACTION_HALT; break; case 'p': if (arg_action != ACTION_REBOOT) arg_action = ACTION_POWEROFF; break; case ARG_REBOOT: arg_action = ACTION_REBOOT; break; case 'f': arg_force = 2; break; case 'w': arg_dry = true; break; case 'd': arg_no_wtmp = true; break; case ARG_NO_WALL: arg_no_wall = true; break; case 'i': case 'h': case 'n': /* Compatibility nops */ break; case '?': return -EINVAL; default: log_error("Unknown option code '%c'.", c); return -EINVAL; } } if (optind < argc) { log_error("Too many arguments."); return -EINVAL; } return 1; } static int parse_time_spec(const char *t, usec_t *_u) { assert(t); assert(_u); if (streq(t, "now")) *_u = 0; else if (!strchr(t, ':')) { uint64_t u; if (safe_atou64(t, &u) < 0) return -EINVAL; *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u; } else { char *e = NULL; long hour, minute; struct tm tm; time_t s; usec_t n; errno = 0; hour = strtol(t, &e, 10); if (errno != 0 || *e != ':' || hour < 0 || hour > 23) return -EINVAL; minute = strtol(e+1, &e, 10); if (errno != 0 || *e != 0 || minute < 0 || minute > 59) return -EINVAL; n = now(CLOCK_REALTIME); s = (time_t) (n / USEC_PER_SEC); zero(tm); assert_se(localtime_r(&s, &tm)); tm.tm_hour = (int) hour; tm.tm_min = (int) minute; tm.tm_sec = 0; assert_se(s = mktime(&tm)); *_u = (usec_t) s * USEC_PER_SEC; while (*_u <= n) *_u += USEC_PER_DAY; } return 0; } static int shutdown_parse_argv(int argc, char *argv[]) { enum { ARG_HELP = 0x100, ARG_NO_WALL }; static const struct option options[] = { { "help", no_argument, NULL, ARG_HELP }, { "halt", no_argument, NULL, 'H' }, { "poweroff", no_argument, NULL, 'P' }, { "reboot", no_argument, NULL, 'r' }, { "kexec", no_argument, NULL, 'K' }, /* not documented extension */ { "no-wall", no_argument, NULL, ARG_NO_WALL }, { NULL, 0, NULL, 0 } }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) { switch (c) { case ARG_HELP: shutdown_help(); return 0; case 'H': arg_action = ACTION_HALT; break; case 'P': arg_action = ACTION_POWEROFF; break; case 'r': if (kexec_loaded()) arg_action = ACTION_KEXEC; else arg_action = ACTION_REBOOT; break; case 'K': arg_action = ACTION_KEXEC; break; case 'h': if (arg_action != ACTION_HALT) arg_action = ACTION_POWEROFF; break; case 'k': arg_dry = true; break; case ARG_NO_WALL: arg_no_wall = true; break; case 't': case 'a': /* Compatibility nops */ break; case 'c': arg_action = ACTION_CANCEL_SHUTDOWN; break; case '?': return -EINVAL; default: log_error("Unknown option code '%c'.", c); return -EINVAL; } } if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) { r = parse_time_spec(argv[optind], &arg_when); if (r < 0) { log_error("Failed to parse time specification: %s", argv[optind]); return r; } } else arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE; if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN) /* No time argument for shutdown cancel */ arg_wall = argv + optind; else if (argc > optind + 1) /* We skip the time argument */ arg_wall = argv + optind + 1; optind = argc; return 1; } static int telinit_parse_argv(int argc, char *argv[]) { enum { ARG_HELP = 0x100, ARG_NO_WALL }; static const struct option options[] = { { "help", no_argument, NULL, ARG_HELP }, { "no-wall", no_argument, NULL, ARG_NO_WALL }, { NULL, 0, NULL, 0 } }; static const struct { char from; enum action to; } table[] = { { '0', ACTION_POWEROFF }, { '6', ACTION_REBOOT }, { '1', ACTION_RESCUE }, { '2', ACTION_RUNLEVEL2 }, { '3', ACTION_RUNLEVEL3 }, { '4', ACTION_RUNLEVEL4 }, { '5', ACTION_RUNLEVEL5 }, { 's', ACTION_RESCUE }, { 'S', ACTION_RESCUE }, { 'q', ACTION_RELOAD }, { 'Q', ACTION_RELOAD }, { 'u', ACTION_REEXEC }, { 'U', ACTION_REEXEC } }; unsigned i; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) { switch (c) { case ARG_HELP: telinit_help(); return 0; case ARG_NO_WALL: arg_no_wall = true; break; case '?': return -EINVAL; default: log_error("Unknown option code '%c'.", c); return -EINVAL; } } if (optind >= argc) { telinit_help(); return -EINVAL; } if (optind + 1 < argc) { log_error("Too many arguments."); return -EINVAL; } if (strlen(argv[optind]) != 1) { log_error("Expected single character argument."); return -EINVAL; } for (i = 0; i < ELEMENTSOF(table); i++) if (table[i].from == argv[optind][0]) break; if (i >= ELEMENTSOF(table)) { log_error("Unknown command '%s'.", argv[optind]); return -EINVAL; } arg_action = table[i].to; optind ++; return 1; } static int runlevel_parse_argv(int argc, char *argv[]) { enum { ARG_HELP = 0x100, }; static const struct option options[] = { { "help", no_argument, NULL, ARG_HELP }, { NULL, 0, NULL, 0 } }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) { switch (c) { case ARG_HELP: runlevel_help(); return 0; case '?': return -EINVAL; default: log_error("Unknown option code '%c'.", c); return -EINVAL; } } if (optind < argc) { log_error("Too many arguments."); return -EINVAL; } return 1; } static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); if (program_invocation_short_name) { if (strstr(program_invocation_short_name, "halt")) { arg_action = ACTION_HALT; return halt_parse_argv(argc, argv); } else if (strstr(program_invocation_short_name, "poweroff")) { arg_action = ACTION_POWEROFF; return halt_parse_argv(argc, argv); } else if (strstr(program_invocation_short_name, "reboot")) { if (kexec_loaded()) arg_action = ACTION_KEXEC; else arg_action = ACTION_REBOOT; return halt_parse_argv(argc, argv); } else if (strstr(program_invocation_short_name, "shutdown")) { arg_action = ACTION_POWEROFF; return shutdown_parse_argv(argc, argv); } else if (strstr(program_invocation_short_name, "init")) { if (sd_booted() > 0) { arg_action = ACTION_INVALID; return telinit_parse_argv(argc, argv); } else { /* Hmm, so some other init system is * running, we need to forward this * request to it. For now we simply * guess that it is Upstart. */ execv("/lib/upstart/telinit", argv); log_error("Couldn't find an alternative telinit implementation to spawn."); return -EIO; } } else if (strstr(program_invocation_short_name, "runlevel")) { arg_action = ACTION_RUNLEVEL; return runlevel_parse_argv(argc, argv); } } arg_action = ACTION_SYSTEMCTL; return systemctl_parse_argv(argc, argv); } static int action_to_runlevel(void) { static const char table[_ACTION_MAX] = { [ACTION_HALT] = '0', [ACTION_POWEROFF] = '0', [ACTION_REBOOT] = '6', [ACTION_RUNLEVEL2] = '2', [ACTION_RUNLEVEL3] = '3', [ACTION_RUNLEVEL4] = '4', [ACTION_RUNLEVEL5] = '5', [ACTION_RESCUE] = '1' }; assert(arg_action < _ACTION_MAX); return table[arg_action]; } static int talk_upstart(void) { DBusMessage *m = NULL, *reply = NULL; DBusError error; int previous, rl, r; char env1_buf[] = "RUNLEVEL=X", env2_buf[] = "PREVLEVEL=X"; char *env1 = env1_buf, *env2 = env2_buf; const char *emit = "runlevel"; dbus_bool_t b_false = FALSE; DBusMessageIter iter, sub; DBusConnection *bus; dbus_error_init(&error); if (!(rl = action_to_runlevel())) return 0; if (utmp_get_runlevel(&previous, NULL) < 0) previous = 'N'; if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) { if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) { r = 0; goto finish; } log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error)); r = -EIO; goto finish; } if ((r = bus_check_peercred(bus)) < 0) { log_error("Failed to verify owner of bus."); goto finish; } if (!(m = dbus_message_new_method_call( "com.ubuntu.Upstart", "/com/ubuntu/Upstart", "com.ubuntu.Upstart0_6", "EmitEvent"))) { log_error("Could not allocate message."); r = -ENOMEM; goto finish; } dbus_message_iter_init_append(m, &iter); env1_buf[sizeof(env1_buf)-2] = rl; env2_buf[sizeof(env2_buf)-2] = previous; if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) || !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) || !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) || !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) || !dbus_message_iter_close_container(&iter, &sub) || !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) { log_error("Could not append arguments to message."); r = -ENOMEM; goto finish; } if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) { if (bus_error_is_no_service(&error)) { r = -EADDRNOTAVAIL; goto finish; } log_error("Failed to issue method call: %s", bus_error_message(&error)); r = -EIO; goto finish; } r = 1; finish: if (m) dbus_message_unref(m); if (reply) dbus_message_unref(reply); if (bus) { dbus_connection_flush(bus); dbus_connection_close(bus); dbus_connection_unref(bus); } dbus_error_free(&error); return r; } static int talk_initctl(void) { struct init_request request; int r, fd; char rl; if (!(rl = action_to_runlevel())) return 0; zero(request); request.magic = INIT_MAGIC; request.sleeptime = 0; request.cmd = INIT_CMD_RUNLVL; request.runlevel = rl; if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) { if (errno == ENOENT) return 0; log_error("Failed to open "INIT_FIFO": %m"); return -errno; } errno = 0; r = loop_write(fd, &request, sizeof(request), false) != sizeof(request); close_nointr_nofail(fd); if (r < 0) { log_error("Failed to write to "INIT_FIFO": %m"); return errno ? -errno : -EIO; } return 1; } static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) { static const struct { const char* verb; const enum { MORE, LESS, EQUAL } argc_cmp; const int argc; int (* const dispatch)(DBusConnection *bus, char **args); } verbs[] = { { "list-units", LESS, 1, list_units }, { "list-unit-files", EQUAL, 1, list_unit_files }, { "list-jobs", EQUAL, 1, list_jobs }, { "clear-jobs", EQUAL, 1, daemon_reload }, { "load", MORE, 2, load_unit }, { "cancel", MORE, 2, cancel_job }, { "start", MORE, 2, start_unit }, { "stop", MORE, 2, start_unit }, { "condstop", MORE, 2, start_unit }, /* For compatibility with ALTLinux */ { "reload", MORE, 2, start_unit }, { "restart", MORE, 2, start_unit }, { "try-restart", MORE, 2, start_unit }, { "reload-or-restart", MORE, 2, start_unit }, { "reload-or-try-restart", MORE, 2, start_unit }, { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */ { "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */ { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */ { "isolate", EQUAL, 2, start_unit }, { "kill", MORE, 2, kill_unit }, { "is-active", MORE, 2, check_unit }, { "check", MORE, 2, check_unit }, { "show", MORE, 1, show }, { "status", MORE, 2, show }, { "help", MORE, 2, show }, { "dump", EQUAL, 1, dump }, { "dot", EQUAL, 1, dot }, { "snapshot", LESS, 2, snapshot }, { "delete", MORE, 2, delete_snapshot }, { "daemon-reload", EQUAL, 1, daemon_reload }, { "daemon-reexec", EQUAL, 1, daemon_reload }, { "show-environment", EQUAL, 1, show_enviroment }, { "set-environment", MORE, 2, set_environment }, { "unset-environment", MORE, 2, set_environment }, { "halt", EQUAL, 1, start_special }, { "poweroff", EQUAL, 1, start_special }, { "reboot", EQUAL, 1, start_special }, { "kexec", EQUAL, 1, start_special }, { "suspend", EQUAL, 1, start_special }, { "hibernate", EQUAL, 1, start_special }, { "default", EQUAL, 1, start_special }, { "rescue", EQUAL, 1, start_special }, { "emergency", EQUAL, 1, start_special }, { "exit", EQUAL, 1, start_special }, { "reset-failed", MORE, 1, reset_failed }, { "enable", MORE, 2, enable_unit }, { "disable", MORE, 2, enable_unit }, { "is-enabled", MORE, 2, unit_is_enabled }, { "reenable", MORE, 2, enable_unit }, { "preset", MORE, 2, enable_unit }, { "mask", MORE, 2, enable_unit }, { "unmask", MORE, 2, enable_unit }, { "link", MORE, 2, enable_unit }, { "switch-root", MORE, 2, switch_root }, }; int left; unsigned i; assert(argc >= 0); assert(argv); assert(error); left = argc - optind; if (left <= 0) /* Special rule: no arguments means "list-units" */ i = 0; else { if (streq(argv[optind], "help") && !argv[optind+1]) { log_error("This command expects one or more " "unit names. Did you mean --help?"); return -EINVAL; } for (i = 0; i < ELEMENTSOF(verbs); i++) if (streq(argv[optind], verbs[i].verb)) break; if (i >= ELEMENTSOF(verbs)) { log_error("Unknown operation '%s'.", argv[optind]); return -EINVAL; } } switch (verbs[i].argc_cmp) { case EQUAL: if (left != verbs[i].argc) { log_error("Invalid number of arguments."); return -EINVAL; } break; case MORE: if (left < verbs[i].argc) { log_error("Too few arguments."); return -EINVAL; } break; case LESS: if (left > verbs[i].argc) { log_error("Too many arguments."); return -EINVAL; } break; default: assert_not_reached("Unknown comparison operator."); } /* Require a bus connection for all operations but * enable/disable */ if (!streq(verbs[i].verb, "enable") && !streq(verbs[i].verb, "disable") && !streq(verbs[i].verb, "is-enabled") && !streq(verbs[i].verb, "list-unit-files") && !streq(verbs[i].verb, "reenable") && !streq(verbs[i].verb, "preset") && !streq(verbs[i].verb, "mask") && !streq(verbs[i].verb, "unmask") && !streq(verbs[i].verb, "link")) { if (running_in_chroot() > 0) { log_info("Running in chroot, ignoring request."); return 0; } if (((!streq(verbs[i].verb, "reboot") && !streq(verbs[i].verb, "halt") && !streq(verbs[i].verb, "poweroff")) || arg_force <= 0) && !bus) { log_error("Failed to get D-Bus connection: %s", dbus_error_is_set(error) ? error->message : "No connection to service manager."); return -EIO; } } else { if (!bus && !avoid_bus()) { log_error("Failed to get D-Bus connection: %s", dbus_error_is_set(error) ? error->message : "No connection to service manager."); return -EIO; } } return verbs[i].dispatch(bus, argv + optind); } static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) { int fd; struct msghdr msghdr; struct iovec iovec[2]; union sockaddr_union sockaddr; struct sd_shutdown_command c; fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0); if (fd < 0) return -errno; zero(c); c.usec = t; c.mode = mode; c.dry_run = dry_run; c.warn_wall = warn; zero(sockaddr); sockaddr.sa.sa_family = AF_UNIX; strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path)); zero(msghdr); msghdr.msg_name = &sockaddr; msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1; zero(iovec); iovec[0].iov_base = (char*) &c; iovec[0].iov_len = offsetof(struct sd_shutdown_command, wall_message); if (isempty(message)) msghdr.msg_iovlen = 1; else { iovec[1].iov_base = (char*) message; iovec[1].iov_len = strlen(message); msghdr.msg_iovlen = 2; } msghdr.msg_iov = iovec; if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) { close_nointr_nofail(fd); return -errno; } close_nointr_nofail(fd); return 0; } static int reload_with_fallback(DBusConnection *bus) { if (bus) { /* First, try systemd via D-Bus. */ if (daemon_reload(bus, NULL) >= 0) return 0; } /* Nothing else worked, so let's try signals */ assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC); if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) { log_error("kill() failed: %m"); return -errno; } return 0; } static int start_with_fallback(DBusConnection *bus) { if (bus) { /* First, try systemd via D-Bus. */ if (start_unit(bus, NULL) >= 0) goto done; } /* Hmm, talking to systemd via D-Bus didn't work. Then * let's try to talk to Upstart via D-Bus. */ if (talk_upstart() > 0) goto done; /* Nothing else worked, so let's try * /dev/initctl */ if (talk_initctl() > 0) goto done; log_error("Failed to talk to init daemon."); return -EIO; done: warn_wall(arg_action); return 0; } static _noreturn_ void halt_now(enum action a) { /* Make sure C-A-D is handled by the kernel from this * point on... */ reboot(RB_ENABLE_CAD); switch (a) { case ACTION_HALT: log_info("Halting."); reboot(RB_HALT_SYSTEM); break; case ACTION_POWEROFF: log_info("Powering off."); reboot(RB_POWER_OFF); break; case ACTION_REBOOT: log_info("Rebooting."); reboot(RB_AUTOBOOT); break; default: assert_not_reached("Unknown halt action."); } assert_not_reached("Uh? This shouldn't happen."); } static int halt_main(DBusConnection *bus) { int r; if (geteuid() != 0) { /* Try logind if we are a normal user and no special * mode applies. Maybe PolicyKit allows us to shutdown * the machine. */ if (arg_when <= 0 && !arg_dry && !arg_force && (arg_action == ACTION_POWEROFF || arg_action == ACTION_REBOOT)) { r = reboot_with_logind(bus, arg_action); if (r >= 0) return r; } log_error("Must be root."); return -EPERM; } if (arg_when > 0) { char *m; m = strv_join(arg_wall, " "); r = send_shutdownd(arg_when, arg_action == ACTION_HALT ? 'H' : arg_action == ACTION_POWEROFF ? 'P' : arg_action == ACTION_KEXEC ? 'K' : 'r', arg_dry, !arg_no_wall, m); free(m); if (r < 0) log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r)); else { char date[FORMAT_TIMESTAMP_MAX]; log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.", format_timestamp(date, sizeof(date), arg_when)); return 0; } } if (!arg_dry && !arg_force) return start_with_fallback(bus); if (!arg_no_wtmp) { if (sd_booted() > 0) log_debug("Not writing utmp record, assuming that systemd-update-utmp is used."); else { r = utmp_put_shutdown(); if (r < 0) log_warning("Failed to write utmp record: %s", strerror(-r)); } } if (arg_dry) return 0; halt_now(arg_action); /* We should never reach this. */ return -ENOSYS; } static int runlevel_main(void) { int r, runlevel, previous; r = utmp_get_runlevel(&runlevel, &previous); if (r < 0) { puts("unknown"); return r; } printf("%c %c\n", previous <= 0 ? 'N' : previous, runlevel <= 0 ? 'N' : runlevel); return 0; } int main(int argc, char*argv[]) { int r, retval = EXIT_FAILURE; DBusConnection *bus = NULL; DBusError error; dbus_error_init(&error); log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r < 0) goto finish; else if (r == 0) { retval = EXIT_SUCCESS; goto finish; } /* /sbin/runlevel doesn't need to communicate via D-Bus, so * let's shortcut this */ if (arg_action == ACTION_RUNLEVEL) { r = runlevel_main(); retval = r < 0 ? EXIT_FAILURE : r; goto finish; } if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) { log_info("Running in chroot, ignoring request."); retval = 0; goto finish; } if (!avoid_bus()) { if (arg_transport == TRANSPORT_NORMAL) bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error); else if (arg_transport == TRANSPORT_POLKIT) { bus_connect_system_polkit(&bus, &error); private_bus = false; } else if (arg_transport == TRANSPORT_SSH) { bus_connect_system_ssh(NULL, arg_host, &bus, &error); private_bus = false; } else assert_not_reached("Uh, invalid transport..."); } switch (arg_action) { case ACTION_SYSTEMCTL: r = systemctl_main(bus, argc, argv, &error); break; case ACTION_HALT: case ACTION_POWEROFF: case ACTION_REBOOT: case ACTION_KEXEC: r = halt_main(bus); break; case ACTION_RUNLEVEL2: case ACTION_RUNLEVEL3: case ACTION_RUNLEVEL4: case ACTION_RUNLEVEL5: case ACTION_RESCUE: case ACTION_EMERGENCY: case ACTION_DEFAULT: r = start_with_fallback(bus); break; case ACTION_RELOAD: case ACTION_REEXEC: r = reload_with_fallback(bus); break; case ACTION_CANCEL_SHUTDOWN: { char *m = NULL; if (arg_wall) { m = strv_join(arg_wall, " "); if (!m) { retval = EXIT_FAILURE; goto finish; } } r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m); if (r < 0) log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r)); free(m); break; } case ACTION_INVALID: case ACTION_RUNLEVEL: default: assert_not_reached("Unknown action"); } retval = r < 0 ? EXIT_FAILURE : r; finish: if (bus) { dbus_connection_flush(bus); dbus_connection_close(bus); dbus_connection_unref(bus); } dbus_error_free(&error); dbus_shutdown(); strv_free(arg_property); pager_close(); ask_password_agent_close(); polkit_agent_close(); return retval; }