| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include "bus-error.h" |
| #include "bus-locator.h" |
| #include "locale-util.h" |
| #include "path-util.h" |
| #include "systemctl-daemon-reload.h" |
| #include "systemctl-enable.h" |
| #include "systemctl-start-unit.h" |
| #include "systemctl-sysv-compat.h" |
| #include "systemctl-util.h" |
| #include "systemctl.h" |
| |
| static int normalize_filenames(char **names) { |
| int r; |
| |
| STRV_FOREACH(u, names) |
| if (!path_is_absolute(*u)) { |
| char* normalized_path; |
| |
| if (!isempty(arg_root)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Non-absolute paths are not allowed when --root is used: %s", |
| *u); |
| |
| if (!strchr(*u, '/')) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Link argument must contain at least one directory separator.\n" |
| "If you intended to link a file in the current directory, try ./%s instead.", |
| *u); |
| |
| r = path_make_absolute_cwd(*u, &normalized_path); |
| if (r < 0) |
| return r; |
| |
| free_and_replace(*u, normalized_path); |
| } |
| |
| return 0; |
| } |
| |
| static int normalize_names(char **names) { |
| bool was_path = false; |
| |
| STRV_FOREACH(u, names) { |
| int r; |
| |
| if (!is_path(*u)) |
| continue; |
| |
| r = free_and_strdup(u, basename(*u)); |
| if (r < 0) |
| return log_error_errno(r, "Failed to normalize unit file path: %m"); |
| |
| was_path = true; |
| } |
| |
| if (was_path) |
| log_warning("Warning: Can't execute disable on the unit file path. Proceeding with the unit name."); |
| |
| return 0; |
| } |
| |
| int verb_enable(int argc, char *argv[], void *userdata) { |
| _cleanup_strv_free_ char **names = NULL; |
| const char *verb = argv[0]; |
| InstallChange *changes = NULL; |
| size_t n_changes = 0; |
| int carries_install_info = -1; |
| bool ignore_carries_install_info = arg_quiet || arg_no_warn; |
| int r; |
| |
| if (!argv[1]) |
| return 0; |
| |
| r = mangle_names("to enable", strv_skip(argv, 1), &names); |
| if (r < 0) |
| return r; |
| |
| r = enable_sysv_units(verb, names); |
| if (r < 0) |
| return r; |
| |
| /* If the operation was fully executed by the SysV compat, let's finish early */ |
| if (strv_isempty(names)) { |
| if (arg_no_reload || install_client_side()) |
| return 0; |
| |
| r = daemon_reload(ACTION_RELOAD, /* graceful= */ false); |
| return r > 0 ? 0 : r; |
| } |
| |
| if (streq(verb, "disable")) { |
| r = normalize_names(names); |
| if (r < 0) |
| return r; |
| } |
| |
| if (streq(verb, "link")) { |
| r = normalize_filenames(names); |
| if (r < 0) |
| return r; |
| } |
| |
| if (install_client_side()) { |
| UnitFileFlags flags; |
| |
| flags = unit_file_flags_from_args(); |
| if (streq(verb, "enable")) { |
| r = unit_file_enable(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| carries_install_info = r; |
| } else if (streq(verb, "disable")) { |
| r = unit_file_disable(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| carries_install_info = r; |
| } else if (streq(verb, "reenable")) { |
| r = unit_file_reenable(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| carries_install_info = r; |
| } else if (streq(verb, "link")) |
| r = unit_file_link(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| else if (streq(verb, "preset")) |
| r = unit_file_preset(arg_scope, flags, arg_root, names, arg_preset_mode, &changes, &n_changes); |
| else if (streq(verb, "mask")) |
| r = unit_file_mask(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| else if (streq(verb, "unmask")) |
| r = unit_file_unmask(arg_scope, flags, arg_root, names, &changes, &n_changes); |
| else if (streq(verb, "revert")) |
| r = unit_file_revert(arg_scope, arg_root, names, &changes, &n_changes); |
| else |
| assert_not_reached(); |
| |
| install_changes_dump(r, verb, changes, n_changes, arg_quiet); |
| if (r < 0) |
| goto finish; |
| r = 0; |
| } else { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| bool expect_carries_install_info = false; |
| bool send_runtime = true, send_force = true, send_preset_mode = false; |
| const char *method; |
| sd_bus *bus; |
| |
| if (STR_IN_SET(verb, "mask", "unmask")) { |
| _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
| |
| r = lookup_paths_init_or_warn(&lp, arg_scope, 0, arg_root); |
| if (r < 0) |
| return r; |
| |
| STRV_FOREACH(name, names) { |
| r = unit_exists(&lp, *name); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| log_notice("Unit %s does not exist, proceeding anyway.", *name); |
| } |
| } |
| |
| r = acquire_bus(BUS_MANAGER, &bus); |
| if (r < 0) |
| return r; |
| |
| polkit_agent_open_maybe(); |
| |
| if (streq(verb, "enable")) { |
| method = "EnableUnitFiles"; |
| expect_carries_install_info = true; |
| } else if (streq(verb, "disable")) { |
| method = "DisableUnitFilesWithFlagsAndInstallInfo"; |
| expect_carries_install_info = true; |
| 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")) { |
| |
| if (arg_preset_mode != UNIT_FILE_PRESET_FULL) { |
| method = "PresetUnitFilesWithMode"; |
| send_preset_mode = true; |
| } else |
| method = "PresetUnitFiles"; |
| |
| expect_carries_install_info = true; |
| ignore_carries_install_info = true; |
| } else if (streq(verb, "mask")) |
| method = "MaskUnitFiles"; |
| else if (streq(verb, "unmask")) { |
| method = "UnmaskUnitFiles"; |
| send_force = false; |
| } else if (streq(verb, "revert")) { |
| method = "RevertUnitFiles"; |
| send_runtime = send_force = false; |
| } else |
| assert_not_reached(); |
| |
| r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_append_strv(m, names); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| if (send_preset_mode) { |
| r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode)); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| if (send_runtime) { |
| if (streq(method, "DisableUnitFilesWithFlagsAndInstallInfo")) |
| r = sd_bus_message_append(m, "t", arg_runtime ? (uint64_t) UNIT_FILE_RUNTIME : UINT64_C(0)); |
| else |
| r = sd_bus_message_append(m, "b", arg_runtime); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| if (send_force) { |
| r = sd_bus_message_append(m, "b", arg_force); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = sd_bus_call(bus, m, 0, &error, &reply); |
| if (r < 0) |
| return log_error_errno(r, "Failed to %s unit: %s", verb, bus_error_message(&error, r)); |
| |
| if (expect_carries_install_info) { |
| r = sd_bus_message_read(reply, "b", &carries_install_info); |
| if (r < 0) |
| return bus_log_parse_error(r); |
| } |
| |
| r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); |
| if (r < 0) |
| goto finish; |
| |
| /* Try to reload if enabled */ |
| if (!arg_no_reload) { |
| r = daemon_reload(ACTION_RELOAD, /* graceful= */ false); |
| if (r > 0) |
| r = 0; |
| } else |
| r = 0; |
| } |
| |
| if (carries_install_info == 0 && !ignore_carries_install_info) |
| log_notice("The unit files have no installation config (WantedBy=, RequiredBy=, Also=,\n" |
| "Alias= settings in the [Install] section, and DefaultInstance= for template\n" |
| "units). This means they are not meant to be enabled or disabled using systemctl.\n" |
| " \n" /* trick: the space is needed so that the line does not get stripped from output */ |
| "Possible reasons for having this kind of units are:\n" |
| "%1$s A unit may be statically enabled by being symlinked from another unit's\n" |
| " .wants/ or .requires/ directory.\n" |
| "%1$s A unit's purpose may be to act as a helper for some other unit which has\n" |
| " a requirement dependency on it.\n" |
| "%1$s A unit may be started when needed via activation (socket, path, timer,\n" |
| " D-Bus, udev, scripted systemctl call, ...).\n" |
| "%1$s In case of template units, the unit is meant to be enabled with some\n" |
| " instance name specified.", |
| special_glyph(SPECIAL_GLYPH_BULLET)); |
| |
| if (arg_now && STR_IN_SET(argv[0], "enable", "disable", "mask")) { |
| sd_bus *bus; |
| size_t len, i; |
| |
| r = acquire_bus(BUS_MANAGER, &bus); |
| if (r < 0) |
| goto finish; |
| |
| len = strv_length(names); |
| { |
| char *new_args[len + 2]; |
| |
| new_args[0] = (char*) (streq(argv[0], "enable") ? "start" : "stop"); |
| for (i = 0; i < len; i++) |
| new_args[i + 1] = basename(names[i]); |
| new_args[i + 1] = NULL; |
| |
| r = verb_start(len + 1, new_args, userdata); |
| } |
| } |
| |
| finish: |
| install_changes_free(changes, n_changes); |
| |
| return r; |
| } |
