/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include #include #include #include #include "sd-bus.h" #include "alloc-util.h" #include "build.h" #include "bus-error.h" #include "bus-locator.h" #include "bus-map-properties.h" #include "bus-print-properties.h" #include "bus-unit-procs.h" #include "cgroup-show.h" #include "cgroup-util.h" #include "format-table.h" #include "log.h" #include "logs-show.h" #include "macro.h" #include "main-func.h" #include "memory-util.h" #include "pager.h" #include "parse-argument.h" #include "parse-util.h" #include "pretty-print.h" #include "process-util.h" #include "rlimit-util.h" #include "sigbus.h" #include "signal-util.h" #include "spawn-polkit-agent.h" #include "string-table.h" #include "strv.h" #include "sysfs-show.h" #include "terminal-util.h" #include "unit-name.h" #include "user-util.h" #include "verbs.h" static char **arg_property = NULL; static BusPrintPropertyFlags arg_print_flags = 0; static bool arg_full = false; static PagerFlags arg_pager_flags = 0; static bool arg_legend = true; static const char *arg_kill_whom = NULL; static int arg_signal = SIGTERM; static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; static char *arg_host = NULL; static bool arg_ask_password = true; static unsigned arg_lines = 10; static OutputMode arg_output = OUTPUT_SHORT; STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep); typedef struct SessionStatusInfo { const char *id; uid_t uid; const char *name; dual_timestamp timestamp; unsigned vtnr; const char *seat; const char *tty; const char *display; bool remote; const char *remote_host; const char *remote_user; const char *service; pid_t leader; const char *type; const char *class; const char *state; const char *scope; const char *desktop; bool idle_hint; dual_timestamp idle_hint_timestamp; } SessionStatusInfo; typedef struct UserStatusInfo { uid_t uid; bool linger; const char *name; dual_timestamp timestamp; const char *state; char **sessions; const char *display; const char *slice; } UserStatusInfo; typedef struct SeatStatusInfo { const char *id; const char *active_session; char **sessions; } SeatStatusInfo; static void user_status_info_done(UserStatusInfo *info) { assert(info); strv_free(info->sessions); } static void seat_status_info_done(SeatStatusInfo *info) { assert(info); strv_free(info->sessions); } static OutputFlags get_output_flags(void) { return FLAGS_SET(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) * OUTPUT_SHOW_ALL | (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH | colors_enabled() * OUTPUT_COLOR; } static int show_table(Table *table, const char *word) { int r; assert(table); assert(word); if (table_get_rows(table) > 1 || OUTPUT_MODE_IS_JSON(arg_output)) { r = table_set_sort(table, (size_t) 0); if (r < 0) return table_log_sort_error(r); table_set_header(table, arg_legend); if (OUTPUT_MODE_IS_JSON(arg_output)) r = table_print_json(table, NULL, output_mode_to_json_format_flags(arg_output) | JSON_FORMAT_COLOR_AUTO); else r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); } if (arg_legend) { if (table_get_rows(table) > 1) printf("\n%zu %s listed.\n", table_get_rows(table) - 1, word); else printf("No %s.\n", word); } return 0; } static int list_sessions(int argc, char *argv[], void *userdata) { static const struct bus_properties_map map[] = { { "IdleHint", "b", NULL, offsetof(SessionStatusInfo, idle_hint) }, { "IdleSinceHintMonotonic", "t", NULL, offsetof(SessionStatusInfo, idle_hint_timestamp.monotonic) }, { "State", "s", NULL, offsetof(SessionStatusInfo, state) }, { "TTY", "s", NULL, offsetof(SessionStatusInfo, tty) }, {}, }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(table_unrefp) Table *table = NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); pager_open(arg_pager_flags); r = bus_call_method(bus, bus_login_mgr, "ListSessions", &error, &reply, NULL); if (r < 0) return log_error_errno(r, "Failed to list sessions: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, 'a', "(susso)"); if (r < 0) return bus_log_parse_error(r); table = table_new("session", "uid", "user", "seat", "tty", "state", "idle", "since"); if (!table) return log_oom(); /* Right-align the first two fields (since they are numeric) */ (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100); (void) table_set_align_percent(table, TABLE_HEADER_CELL(1), 100); (void) table_set_ersatz_string(table, TABLE_ERSATZ_DASH); for (;;) { _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL; const char *id, *user, *seat, *object; uint32_t uid; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; SessionStatusInfo i = {}; r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object); if (r < 0) return bus_log_parse_error(r); if (r == 0) break; r = bus_map_all_properties(bus, "org.freedesktop.login1", object, map, BUS_MAP_BOOLEAN_AS_BOOL, &e, &m, &i); if (r < 0) { log_full_errno(sd_bus_error_has_name(&e, SD_BUS_ERROR_UNKNOWN_OBJECT) ? LOG_DEBUG : LOG_WARNING, r, "Failed to get properties of session %s, ignoring: %s", id, bus_error_message(&e, r)); continue; } r = table_add_many(table, TABLE_STRING, id, TABLE_UID, (uid_t) uid, TABLE_STRING, user, TABLE_STRING, empty_to_null(seat), TABLE_STRING, empty_to_null(i.tty), TABLE_STRING, i.state, TABLE_BOOLEAN, i.idle_hint); if (r < 0) return table_log_add_error(r); if (i.idle_hint) r = table_add_cell(table, NULL, TABLE_TIMESTAMP_RELATIVE_MONOTONIC, &i.idle_hint_timestamp.monotonic); else r = table_add_cell(table, NULL, TABLE_EMPTY, NULL); if (r < 0) return table_log_add_error(r); } r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); return show_table(table, "sessions"); } static int list_users(int argc, char *argv[], void *userdata) { static const struct bus_properties_map property_map[] = { { "Linger", "b", NULL, offsetof(UserStatusInfo, linger) }, { "State", "s", NULL, offsetof(UserStatusInfo, state) }, {}, }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(table_unrefp) Table *table = NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); pager_open(arg_pager_flags); r = bus_call_method(bus, bus_login_mgr, "ListUsers", &error, &reply, NULL); if (r < 0) return log_error_errno(r, "Failed to list users: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, 'a', "(uso)"); if (r < 0) return bus_log_parse_error(r); table = table_new("uid", "user", "linger", "state"); if (!table) return log_oom(); (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100); (void) table_set_ersatz_string(table, TABLE_ERSATZ_DASH); for (;;) { _cleanup_(sd_bus_error_free) sd_bus_error error_property = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_property = NULL; _cleanup_(user_status_info_done) UserStatusInfo info = {}; const char *user, *object; uint32_t uid; r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object); if (r < 0) return bus_log_parse_error(r); if (r == 0) break; r = bus_map_all_properties(bus, "org.freedesktop.login1", object, property_map, BUS_MAP_BOOLEAN_AS_BOOL, &error_property, &reply_property, &info); if (r < 0) { log_full_errno(sd_bus_error_has_name(&error_property, SD_BUS_ERROR_UNKNOWN_OBJECT) ? LOG_DEBUG : LOG_WARNING, r, "Failed to get properties of user %s, ignoring: %s", user, bus_error_message(&error_property, r)); continue; } r = table_add_many(table, TABLE_UID, (uid_t) uid, TABLE_STRING, user, TABLE_BOOLEAN, info.linger, TABLE_STRING, info.state); if (r < 0) return table_log_add_error(r); } r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); return show_table(table, "users"); } static int list_seats(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(table_unrefp) Table *table = NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); pager_open(arg_pager_flags); r = bus_call_method(bus, bus_login_mgr, "ListSeats", &error, &reply, NULL); if (r < 0) return log_error_errno(r, "Failed to list seats: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, 'a', "(so)"); if (r < 0) return bus_log_parse_error(r); table = table_new("seat"); if (!table) return log_oom(); (void) table_set_ersatz_string(table, TABLE_ERSATZ_DASH); for (;;) { const char *seat; r = sd_bus_message_read(reply, "(so)", &seat, NULL); if (r < 0) return bus_log_parse_error(r); if (r == 0) break; r = table_add_cell(table, NULL, TABLE_STRING, seat); if (r < 0) return table_log_add_error(r); } r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); return show_table(table, "seats"); } static int show_unit_cgroup( sd_bus *bus, const char *unit, pid_t leader, const char *prefix) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *cgroup = NULL; unsigned c; int r; assert(bus); assert(unit); assert(prefix); r = show_cgroup_get_unit_path_and_warn(bus, unit, &cgroup); if (r < 0) return r; if (isempty(cgroup)) return 0; c = columns(); if (c > 18) c -= 18; r = unit_show_processes(bus, unit, cgroup, prefix, c, get_output_flags(), &error); if (r == -EBADR) { if (arg_transport == BUS_TRANSPORT_REMOTE) return 0; /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */ if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup) != 0 && leader <= 0) return 0; show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, prefix, c, &leader, leader > 0, get_output_flags()); } else if (r < 0) return log_error_errno(r, "Failed to dump process list: %s", bus_error_message(&error, r)); return 0; } static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { const char *contents; int r; assert(bus); assert(m); r = sd_bus_message_peek_type(m, NULL, &contents); if (r < 0) return r; r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents); if (r < 0) return r; r = sd_bus_message_read_basic(m, contents[0], userdata); if (r < 0) return r; r = sd_bus_message_skip(m, contents+1); if (r < 0) return r; r = sd_bus_message_exit_container(m); if (r < 0) return r; return 0; } static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { const char *name; int r; assert(bus); assert(m); r = sd_bus_message_enter_container(m, 'a', "(so)"); if (r < 0) return r; while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) { r = strv_extend(userdata, name); if (r < 0) return r; } if (r < 0) return r; return sd_bus_message_exit_container(m); } static int mark_session(char **sessions, const char *target_session) { assert(sessions); assert(target_session); STRV_FOREACH(i, sessions) if (streq(*i, target_session)) { _cleanup_free_ char *marked = NULL; marked = strjoin("*", target_session); if (!marked) return log_oom(); return free_and_replace(*i, marked); } return 0; } static int print_session_status_info(sd_bus *bus, const char *path) { static const struct bus_properties_map map[] = { { "Id", "s", NULL, offsetof(SessionStatusInfo, id) }, { "Name", "s", NULL, offsetof(SessionStatusInfo, name) }, { "TTY", "s", NULL, offsetof(SessionStatusInfo, tty) }, { "Display", "s", NULL, offsetof(SessionStatusInfo, display) }, { "RemoteHost", "s", NULL, offsetof(SessionStatusInfo, remote_host) }, { "RemoteUser", "s", NULL, offsetof(SessionStatusInfo, remote_user) }, { "Service", "s", NULL, offsetof(SessionStatusInfo, service) }, { "Desktop", "s", NULL, offsetof(SessionStatusInfo, desktop) }, { "Type", "s", NULL, offsetof(SessionStatusInfo, type) }, { "Class", "s", NULL, offsetof(SessionStatusInfo, class) }, { "Scope", "s", NULL, offsetof(SessionStatusInfo, scope) }, { "State", "s", NULL, offsetof(SessionStatusInfo, state) }, { "VTNr", "u", NULL, offsetof(SessionStatusInfo, vtnr) }, { "Leader", "u", NULL, offsetof(SessionStatusInfo, leader) }, { "Remote", "b", NULL, offsetof(SessionStatusInfo, remote) }, { "Timestamp", "t", NULL, offsetof(SessionStatusInfo, timestamp.realtime) }, { "TimestampMonotonic", "t", NULL, offsetof(SessionStatusInfo, timestamp.monotonic) }, { "IdleHint", "b", NULL, offsetof(SessionStatusInfo, idle_hint) }, { "IdleSinceHint", "t", NULL, offsetof(SessionStatusInfo, idle_hint_timestamp.realtime) }, { "IdleSinceHintMonotonic", "t", NULL, offsetof(SessionStatusInfo, idle_hint_timestamp.monotonic) }, { "User", "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid) }, { "Seat", "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat) }, {} }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(table_unrefp) Table *table = NULL; SessionStatusInfo i = {}; int r; r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i); if (r < 0) return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); table = table_new_vertical(); if (!table) return log_oom(); (void) table_set_ersatz_string(table, TABLE_ERSATZ_NA); if (dual_timestamp_is_set(&i.timestamp)) { r = table_add_cell(table, NULL, TABLE_FIELD, "Since"); if (r < 0) return table_log_add_error(r); r = table_add_cell_stringf(table, NULL, "%s; %s", FORMAT_TIMESTAMP(i.timestamp.realtime), FORMAT_TIMESTAMP_RELATIVE_MONOTONIC(i.timestamp.monotonic)); if (r < 0) return table_log_add_error(r); } r = table_add_many(table, TABLE_FIELD, "State", TABLE_STRING, i.state); if (r < 0) return table_log_add_error(r); if (i.leader > 0) { _cleanup_free_ char *name = NULL; (void) pid_get_comm(i.leader, &name); r = table_add_cell(table, NULL, TABLE_FIELD, "Leader"); if (r < 0) return table_log_add_error(r); r = table_add_cell_stringf(table, NULL, PID_FMT "%s%s%s", i.leader, !isempty(name) ? " (" : "", strempty(name), !isempty(name) ? ")" : ""); if (r < 0) return table_log_add_error(r); } if (!isempty(i.seat)) { r = table_add_cell(table, NULL, TABLE_FIELD, "Seat"); if (r < 0) return table_log_add_error(r); if (i.vtnr > 0) r = table_add_cell_stringf(table, NULL, "%s; vc%u", i.seat, i.vtnr); else r = table_add_cell(table, NULL, TABLE_STRING, i.seat); if (r < 0) return table_log_add_error(r); } if (!isempty(i.tty)) r = table_add_many(table, TABLE_FIELD, "TTY", TABLE_STRING, i.tty); else if (!isempty(i.display)) r = table_add_many(table, TABLE_FIELD, "Display", TABLE_STRING, i.display); else r = 0; if (r < 0) return table_log_add_error(r); r = table_add_cell(table, NULL, TABLE_FIELD, "Remote"); if (r < 0) return table_log_add_error(r); if (i.remote_host && i.remote_user) r = table_add_cell_stringf(table, NULL, "%s@%s", i.remote_user, i.remote_host); else if (i.remote_host) r = table_add_cell(table, NULL, TABLE_STRING, i.remote_host); else if (i.remote_user) r = table_add_cell_stringf(table, NULL, "user %s", i.remote_user); else r = table_add_cell(table, NULL, TABLE_BOOLEAN, &i.remote); if (r < 0) return table_log_add_error(r); if (i.service) { r = table_add_many(table, TABLE_FIELD, "Service", TABLE_STRING, i.service); if (r < 0) return table_log_add_error(r); } if (i.type) { r = table_add_many(table, TABLE_FIELD, "Type", TABLE_STRING, i.type); if (r < 0) return table_log_add_error(r); } if (i.class) { r = table_add_many(table, TABLE_FIELD, "Class", TABLE_STRING, i.class); if (r < 0) return table_log_add_error(r); } if (!isempty(i.desktop)) { r = table_add_many(table, TABLE_FIELD, "Desktop", TABLE_STRING, i.desktop); if (r < 0) return table_log_add_error(r); } r = table_add_cell(table, NULL, TABLE_FIELD, "Idle"); if (r < 0) return table_log_add_error(r); if (i.idle_hint && dual_timestamp_is_set(&i.idle_hint_timestamp)) r = table_add_cell_stringf(table, NULL, "%s since %s (%s)", yes_no(i.idle_hint), FORMAT_TIMESTAMP(i.idle_hint_timestamp.realtime), FORMAT_TIMESTAMP_RELATIVE_MONOTONIC(i.idle_hint_timestamp.monotonic)); else r = table_add_cell(table, NULL, TABLE_BOOLEAN, &i.idle_hint); if (r < 0) return table_log_add_error(r); if (i.scope) { r = table_add_many(table, TABLE_FIELD, "Unit", TABLE_SET_MINIMUM_WIDTH, STRLEN("Display"), /* For alignment with show_unit_cgroup */ TABLE_STRING, i.scope); if (r < 0) return table_log_add_error(r); } /* We don't use the table to show the header, in order to make the width of the column stable. */ printf("%s%s - %s (" UID_FMT ")%s\n", ansi_highlight(), i.id, i.name, i.uid, ansi_normal()); r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); if (i.scope) { show_unit_cgroup(bus, i.scope, i.leader, /* prefix = */ strrepa(" ", STRLEN("Display: "))); if (arg_transport == BUS_TRANSPORT_LOCAL) show_journal_by_unit( stdout, i.scope, NULL, arg_output, 0, i.timestamp.monotonic, arg_lines, 0, get_output_flags() | OUTPUT_BEGIN_NEWLINE, SD_JOURNAL_LOCAL_ONLY, true, NULL); } return 0; } static int print_user_status_info(sd_bus *bus, const char *path) { static const struct bus_properties_map map[] = { { "Name", "s", NULL, offsetof(UserStatusInfo, name) }, { "Linger", "b", NULL, offsetof(UserStatusInfo, linger) }, { "Slice", "s", NULL, offsetof(UserStatusInfo, slice) }, { "State", "s", NULL, offsetof(UserStatusInfo, state) }, { "UID", "u", NULL, offsetof(UserStatusInfo, uid) }, { "Timestamp", "t", NULL, offsetof(UserStatusInfo, timestamp.realtime) }, { "TimestampMonotonic", "t", NULL, offsetof(UserStatusInfo, timestamp.monotonic) }, { "Display", "(so)", prop_map_first_of_struct, offsetof(UserStatusInfo, display) }, { "Sessions", "a(so)", prop_map_sessions_strv, offsetof(UserStatusInfo, sessions) }, {} }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(user_status_info_done) UserStatusInfo i = {}; _cleanup_(table_unrefp) Table *table = NULL; int r; r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i); if (r < 0) return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); table = table_new_vertical(); if (!table) return log_oom(); (void) table_set_ersatz_string(table, TABLE_ERSATZ_NA); if (dual_timestamp_is_set(&i.timestamp)) { r = table_add_cell(table, NULL, TABLE_FIELD, "Since"); if (r < 0) return table_log_add_error(r); r = table_add_cell_stringf(table, NULL, "%s; %s", FORMAT_TIMESTAMP(i.timestamp.realtime), FORMAT_TIMESTAMP_RELATIVE_MONOTONIC(i.timestamp.monotonic)); if (r < 0) return table_log_add_error(r); } r = table_add_many(table, TABLE_FIELD, "State", TABLE_STRING, i.state); if (r < 0) return table_log_add_error(r); if (!strv_isempty(i.sessions)) { _cleanup_strv_free_ char **sessions = TAKE_PTR(i.sessions); r = mark_session(sessions, i.display); if (r < 0) return r; r = table_add_many(table, TABLE_FIELD, "Sessions", TABLE_STRV_WRAPPED, sessions); if (r < 0) return table_log_add_error(r); } r = table_add_many(table, TABLE_FIELD, "Linger", TABLE_BOOLEAN, i.linger); if (r < 0) return table_log_add_error(r); if (i.slice) { r = table_add_many(table, TABLE_FIELD, "Unit", TABLE_SET_MINIMUM_WIDTH, STRLEN("Sessions"), /* For alignment with show_unit_cgroup */ TABLE_STRING, i.slice); if (r < 0) return table_log_add_error(r); } printf("%s%s (" UID_FMT ")%s\n", ansi_highlight(), i.name, i.uid, ansi_normal()); r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); if (i.slice) { show_unit_cgroup(bus, i.slice, /* leader = */ 0, /* prefix = */ strrepa(" ", STRLEN("Sessions: "))); if (arg_transport == BUS_TRANSPORT_LOCAL) show_journal_by_unit( stdout, i.slice, NULL, arg_output, 0, i.timestamp.monotonic, arg_lines, 0, get_output_flags() | OUTPUT_BEGIN_NEWLINE, SD_JOURNAL_LOCAL_ONLY, true, NULL); } return 0; } static int print_seat_status_info(sd_bus *bus, const char *path) { static const struct bus_properties_map map[] = { { "Id", "s", NULL, offsetof(SeatStatusInfo, id) }, { "ActiveSession", "(so)", prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) }, { "Sessions", "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) }, {} }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(seat_status_info_done) SeatStatusInfo i = {}; _cleanup_(table_unrefp) Table *table = NULL; int r; r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, 0, &error, &m, &i); if (r < 0) return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); table = table_new_vertical(); if (!table) return log_oom(); (void) table_set_ersatz_string(table, TABLE_ERSATZ_NA); if (!strv_isempty(i.sessions)) { _cleanup_strv_free_ char **sessions = TAKE_PTR(i.sessions); r = mark_session(sessions, i.active_session); if (r < 0) return r; r = table_add_many(table, TABLE_FIELD, "Sessions", TABLE_STRV_WRAPPED, sessions); if (r < 0) return table_log_add_error(r); } if (arg_transport == BUS_TRANSPORT_LOCAL) { r = table_add_many(table, TABLE_FIELD, "Devices", TABLE_SET_MINIMUM_WIDTH, STRLEN("Sessions"), /* For alignment with show_sysfs */ TABLE_EMPTY); if (r < 0) return table_log_add_error(r); } printf("%s%s%s\n", ansi_highlight(), i.id, ansi_normal()); r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); if (arg_transport == BUS_TRANSPORT_LOCAL) { unsigned c = columns(); if (c > 21) c -= 21; show_sysfs(i.id, strrepa(" ", STRLEN("Sessions:")), c, get_output_flags()); } return 0; } static int print_property(const char *name, const char *expected_value, sd_bus_message *m, BusPrintPropertyFlags flags) { char type; const char *contents; int r; assert(name); assert(m); r = sd_bus_message_peek_type(m, &type, &contents); if (r < 0) return r; switch (type) { case SD_BUS_TYPE_STRUCT: if (contents[0] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) { const char *s; r = sd_bus_message_read(m, "(so)", &s, NULL); if (r < 0) return bus_log_parse_error(r); bus_print_property_value(name, expected_value, flags, s); return 1; } else if (contents[0] == SD_BUS_TYPE_UINT32 && streq(name, "User")) { uint32_t uid; r = sd_bus_message_read(m, "(uo)", &uid, NULL); if (r < 0) return bus_log_parse_error(r); if (!uid_is_valid(uid)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid user ID: " UID_FMT, uid); bus_print_property_valuef(name, expected_value, flags, UID_FMT, uid); return 1; } break; case SD_BUS_TYPE_ARRAY: if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) { const char *s; bool space = false; r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)"); if (r < 0) return bus_log_parse_error(r); if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE)) printf("%s=", name); while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) { printf("%s%s", space ? " " : "", s); space = true; } if (space || !FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE)) printf("\n"); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(m); if (r < 0) return bus_log_parse_error(r); return 1; } break; } return 0; } static int show_properties(sd_bus *bus, const char *path) { int r; assert(bus); assert(path); r = bus_print_all_properties( bus, "org.freedesktop.login1", path, print_property, arg_property, arg_print_flags, NULL); if (r < 0) return bus_log_parse_error(r); return 0; } static int get_bus_path_by_id( sd_bus *bus, const char *type, const char *method, const char *id, char **ret) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_free_ char *p = NULL; const char *path; int r; assert(bus); assert(type); assert(STR_IN_SET(type, "session", "seat")); assert(method); assert(id); assert(ret); r = bus_call_method(bus, bus_login_mgr, method, &error, &reply, "s", id); if (r < 0) return log_error_errno(r, "Failed to get path for %s '%s': %s", type, id, bus_error_message(&error, r)); r = sd_bus_message_read(reply, "o", &path); if (r < 0) return bus_log_parse_error(r); p = strdup(path); if (!p) return log_oom(); *ret = TAKE_PTR(p); return 0; } static int show_session(int argc, char *argv[], void *userdata) { sd_bus *bus = ASSERT_PTR(userdata); bool properties; int r; assert(argv); properties = !strstr(argv[0], "status"); pager_open(arg_pager_flags); if (argc <= 1) { _cleanup_free_ char *path = NULL; /* If no argument is specified inspect the manager itself */ if (properties) return show_properties(bus, "/org/freedesktop/login1"); r = get_bus_path_by_id(bus, "session", "GetSession", "auto", &path); if (r < 0) return r; return print_session_status_info(bus, path); } for (int i = 1, first = true; i < argc; i++, first = false) { _cleanup_free_ char *path = NULL; r = get_bus_path_by_id(bus, "session", "GetSession", argv[i], &path); if (r < 0) return r; if (!first) putchar('\n'); if (properties) r = show_properties(bus, path); else r = print_session_status_info(bus, path); if (r < 0) return r; } return 0; } static int show_user(int argc, char *argv[], void *userdata) { sd_bus *bus = ASSERT_PTR(userdata); bool properties; int r; assert(argv); properties = !strstr(argv[0], "status"); pager_open(arg_pager_flags); if (argc <= 1) { /* If no argument is specified inspect the manager itself */ if (properties) return show_properties(bus, "/org/freedesktop/login1"); return print_user_status_info(bus, "/org/freedesktop/login1/user/self"); } for (int i = 1, first = true; i < argc; i++, first = false) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; const char *path; uid_t uid; r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); r = bus_call_method(bus, bus_login_mgr, "GetUser", &error, &reply, "u", (uint32_t) uid); if (r < 0) return log_error_errno(r, "Failed to get user: %s", bus_error_message(&error, r)); r = sd_bus_message_read(reply, "o", &path); if (r < 0) return bus_log_parse_error(r); if (!first) putchar('\n'); if (properties) r = show_properties(bus, path); else r = print_user_status_info(bus, path); if (r < 0) return r; } return 0; } static int show_seat(int argc, char *argv[], void *userdata) { sd_bus *bus = ASSERT_PTR(userdata); bool properties; int r; assert(argv); properties = !strstr(argv[0], "status"); pager_open(arg_pager_flags); if (argc <= 1) { _cleanup_free_ char *path = NULL; /* If no argument is specified inspect the manager itself */ if (properties) return show_properties(bus, "/org/freedesktop/login1"); r = get_bus_path_by_id(bus, "seat", "GetSeat", "auto", &path); if (r < 0) return r; return print_seat_status_info(bus, path); } for (int i = 1, first = true; i < argc; i++, first = false) { _cleanup_free_ char *path = NULL; r = get_bus_path_by_id(bus, "seat", "GetSeat", argv[i], &path); if (r < 0) return r; if (!first) putchar('\n'); if (properties) r = show_properties(bus, path); else r = print_seat_status_info(bus, path); if (r < 0) return r; } return 0; } static int activate(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); if (argc < 2) { r = sd_bus_call_method( bus, "org.freedesktop.login1", "/org/freedesktop/login1/session/auto", "org.freedesktop.login1.Session", streq(argv[0], "lock-session") ? "Lock" : streq(argv[0], "unlock-session") ? "Unlock" : streq(argv[0], "terminate-session") ? "Terminate" : "Activate", &error, NULL, NULL); if (r < 0) return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); return 0; } for (int i = 1; i < argc; i++) { r = bus_call_method( bus, bus_login_mgr, streq(argv[0], "lock-session") ? "LockSession" : streq(argv[0], "unlock-session") ? "UnlockSession" : streq(argv[0], "terminate-session") ? "TerminateSession" : "ActivateSession", &error, NULL, "s", argv[i]); if (r < 0) return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); } return 0; } static int kill_session(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); if (!arg_kill_whom) arg_kill_whom = "all"; for (int i = 1; i < argc; i++) { r = bus_call_method( bus, bus_login_mgr, "KillSession", &error, NULL, "ssi", argv[i], arg_kill_whom, arg_signal); if (r < 0) return log_error_errno(r, "Could not kill session: %s", bus_error_message(&error, r)); } return 0; } static int enable_linger(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); char* short_argv[3]; bool b; int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); b = streq(argv[0], "enable-linger"); if (argc < 2) { /* No argument? Let's use an empty user name, * then logind will use our user. */ short_argv[0] = argv[0]; short_argv[1] = (char*) ""; short_argv[2] = NULL; argv = short_argv; argc = 2; } for (int i = 1; i < argc; i++) { uid_t uid; if (isempty(argv[i])) uid = UID_INVALID; else { r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); } r = bus_call_method( bus, bus_login_mgr, "SetUserLinger", &error, NULL, "ubb", (uint32_t) uid, b, true); if (r < 0) return log_error_errno(r, "Could not enable linger: %s", bus_error_message(&error, r)); } return 0; } static int terminate_user(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); for (int i = 1; i < argc; i++) { uid_t uid; if (isempty(argv[i])) uid = getuid(); else { const char *u = argv[i]; r = get_user_creds(&u, &uid, NULL, NULL, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); } r = bus_call_method(bus, bus_login_mgr, "TerminateUser", &error, NULL, "u", (uint32_t) uid); if (r < 0) return log_error_errno(r, "Could not terminate user: %s", bus_error_message(&error, r)); } return 0; } static int kill_user(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); if (!arg_kill_whom) arg_kill_whom = "all"; for (int i = 1; i < argc; i++) { uid_t uid; if (isempty(argv[i])) uid = getuid(); else { const char *u = argv[i]; r = get_user_creds(&u, &uid, NULL, NULL, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); } r = bus_call_method( bus, bus_login_mgr, "KillUser", &error, NULL, "ui", (uint32_t) uid, arg_signal); if (r < 0) return log_error_errno(r, "Could not kill user: %s", bus_error_message(&error, r)); } return 0; } static int attach(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); for (int i = 2; i < argc; i++) { r = bus_call_method( bus, bus_login_mgr, "AttachDevice", &error, NULL, "ssb", argv[1], argv[i], true); if (r < 0) return log_error_errno(r, "Could not attach device: %s", bus_error_message(&error, r)); } return 0; } static int flush_devices(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); r = bus_call_method(bus, bus_login_mgr, "FlushDevices", &error, NULL, "b", true); if (r < 0) return log_error_errno(r, "Could not flush devices: %s", bus_error_message(&error, r)); return 0; } static int lock_sessions(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); r = bus_call_method( bus, bus_login_mgr, streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions", &error, NULL, NULL); if (r < 0) return log_error_errno(r, "Could not lock sessions: %s", bus_error_message(&error, r)); return 0; } static int terminate_seat(int argc, char *argv[], void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; assert(argv); polkit_agent_open_if_enabled(arg_transport, arg_ask_password); for (int i = 1; i < argc; i++) { r = bus_call_method(bus, bus_login_mgr, "TerminateSeat", &error, NULL, "s", argv[i]); if (r < 0) return log_error_errno(r, "Could not terminate seat: %s", bus_error_message(&error, r)); } return 0; } static int help(int argc, char *argv[], void *userdata) { _cleanup_free_ char *link = NULL; int r; pager_open(arg_pager_flags); r = terminal_urlify_man("loginctl", "1", &link); if (r < 0) return log_oom(); printf("%1$s [OPTIONS...] COMMAND ...\n\n" "%5$sSend control commands to or query the login manager.%6$s\n" "\n%3$sSession Commands:%4$s\n" " list-sessions List sessions\n" " session-status [ID...] Show session status\n" " show-session [ID...] Show properties of sessions or the manager\n" " activate [ID] Activate a session\n" " lock-session [ID...] Screen lock one or more sessions\n" " unlock-session [ID...] Screen unlock one or more sessions\n" " lock-sessions Screen lock all current sessions\n" " unlock-sessions Screen unlock all current sessions\n" " terminate-session ID... Terminate one or more sessions\n" " kill-session ID... Send signal to processes of a session\n" "\n%3$sUser Commands:%4$s\n" " list-users List users\n" " user-status [USER...] Show user status\n" " show-user [USER...] Show properties of users or the manager\n" " enable-linger [USER...] Enable linger state of one or more users\n" " disable-linger [USER...] Disable linger state of one or more users\n" " terminate-user USER... Terminate all sessions of one or more users\n" " kill-user USER... Send signal to processes of a user\n" "\n%3$sSeat Commands:%4$s\n" " list-seats List seats\n" " seat-status [NAME...] Show seat status\n" " show-seat [NAME...] Show properties of seats or the manager\n" " attach NAME DEVICE... Attach one or more devices to a seat\n" " flush-devices Flush all device associations\n" " terminate-seat NAME... Terminate all sessions on one or more seats\n" "\n%3$sOptions:%4$s\n" " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" " --no-legend Do not show the headers and footers\n" " --no-ask-password Don't prompt for password\n" " -H --host=[USER@]HOST Operate on remote host\n" " -M --machine=CONTAINER Operate on local container\n" " -p --property=NAME Show only properties by this name\n" " -P NAME Equivalent to --value --property=NAME\n" " -a --all Show all properties, including empty ones\n" " --value When showing properties, only print the value\n" " -l --full Do not ellipsize output\n" " --kill-whom=WHOM Whom to send signal to\n" " -s --signal=SIGNAL Which signal to send\n" " -n --lines=INTEGER Number of journal entries to show\n" " -o --output=STRING Change journal output mode (short, short-precise,\n" " short-iso, short-iso-precise, short-full,\n" " short-monotonic, short-unix, short-delta,\n" " json, json-pretty, json-sse, json-seq, cat,\n" " verbose, export, with-unit)\n" "\nSee the %2$s for details.\n", program_invocation_short_name, link, ansi_underline(), ansi_normal(), ansi_highlight(), ansi_normal()); return 0; } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_VALUE, ARG_NO_PAGER, ARG_NO_LEGEND, ARG_KILL_WHOM, ARG_NO_ASK_PASSWORD, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "property", required_argument, NULL, 'p' }, { "all", no_argument, NULL, 'a' }, { "value", no_argument, NULL, ARG_VALUE }, { "full", no_argument, NULL, 'l' }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, { "kill-whom", required_argument, NULL, ARG_KILL_WHOM }, { "signal", required_argument, NULL, 's' }, { "host", required_argument, NULL, 'H' }, { "machine", required_argument, NULL, 'M' }, { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, { "lines", required_argument, NULL, 'n' }, { "output", required_argument, NULL, 'o' }, {} }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "hp:P:als:H:M:n:o:", options, NULL)) >= 0) switch (c) { case 'h': return help(0, NULL, NULL); case ARG_VERSION: return version(); case 'P': SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_ONLY_VALUE, true); _fallthrough_; case 'p': { r = strv_extend(&arg_property, optarg); if (r < 0) return log_oom(); /* If the user asked for a particular * property, show it to them, even if it is * empty. */ SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY, true); break; } case 'a': SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY, true); break; case ARG_VALUE: SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_ONLY_VALUE, true); break; case 'l': arg_full = true; break; case 'n': if (safe_atou(optarg, &arg_lines) < 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse lines '%s'", optarg); break; case 'o': if (streq(optarg, "help")) { DUMP_STRING_TABLE(output_mode, OutputMode, _OUTPUT_MODE_MAX); return 0; } arg_output = output_mode_from_string(optarg); if (arg_output < 0) return log_error_errno(arg_output, "Unknown output '%s'.", optarg); if (OUTPUT_MODE_IS_JSON(arg_output)) arg_legend = false; break; case ARG_NO_PAGER: arg_pager_flags |= PAGER_DISABLE; break; case ARG_NO_LEGEND: arg_legend = false; break; case ARG_NO_ASK_PASSWORD: arg_ask_password = false; break; case ARG_KILL_WHOM: arg_kill_whom = optarg; break; case 's': r = parse_signal_argument(optarg, &arg_signal); if (r <= 0) return r; break; case 'H': arg_transport = BUS_TRANSPORT_REMOTE; arg_host = optarg; break; case 'M': arg_transport = BUS_TRANSPORT_MACHINE; arg_host = optarg; break; case '?': return -EINVAL; default: assert_not_reached(); } return 1; } static int loginctl_main(int argc, char *argv[], sd_bus *bus) { static const Verb verbs[] = { { "help", VERB_ANY, VERB_ANY, 0, help }, { "list-sessions", VERB_ANY, 1, VERB_DEFAULT, list_sessions }, { "session-status", VERB_ANY, VERB_ANY, 0, show_session }, { "show-session", VERB_ANY, VERB_ANY, 0, show_session }, { "activate", VERB_ANY, 2, 0, activate }, { "lock-session", VERB_ANY, VERB_ANY, 0, activate }, { "unlock-session", VERB_ANY, VERB_ANY, 0, activate }, { "lock-sessions", VERB_ANY, 1, 0, lock_sessions }, { "unlock-sessions", VERB_ANY, 1, 0, lock_sessions }, { "terminate-session", 2, VERB_ANY, 0, activate }, { "kill-session", 2, VERB_ANY, 0, kill_session }, { "list-users", VERB_ANY, 1, 0, list_users }, { "user-status", VERB_ANY, VERB_ANY, 0, show_user }, { "show-user", VERB_ANY, VERB_ANY, 0, show_user }, { "enable-linger", VERB_ANY, VERB_ANY, 0, enable_linger }, { "disable-linger", VERB_ANY, VERB_ANY, 0, enable_linger }, { "terminate-user", 2, VERB_ANY, 0, terminate_user }, { "kill-user", 2, VERB_ANY, 0, kill_user }, { "list-seats", VERB_ANY, 1, 0, list_seats }, { "seat-status", VERB_ANY, VERB_ANY, 0, show_seat }, { "show-seat", VERB_ANY, VERB_ANY, 0, show_seat }, { "attach", 3, VERB_ANY, 0, attach }, { "flush-devices", VERB_ANY, 1, 0, flush_devices }, { "terminate-seat", 2, VERB_ANY, 0, terminate_seat }, {} }; return dispatch_verb(argc, argv, verbs, bus); } static int run(int argc, char *argv[]) { _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; int r; setlocale(LC_ALL, ""); log_setup(); /* The journal merging logic potentially needs a lot of fds. */ (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); sigbus_install(); r = parse_argv(argc, argv); if (r <= 0) return r; r = bus_connect_transport(arg_transport, arg_host, RUNTIME_SCOPE_SYSTEM, &bus); if (r < 0) return bus_log_connect_error(r, arg_transport); (void) sd_bus_set_allow_interactive_authorization(bus, arg_ask_password); return loginctl_main(argc, argv, bus); } DEFINE_MAIN_FUNCTION(run);