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-rw-r--r--src/systemctl/systemctl-util.c929
1 files changed, 929 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-util.c b/src/systemctl/systemctl-util.c
new file mode 100644
index 0000000..b333850
--- /dev/null
+++ b/src/systemctl/systemctl-util.c
@@ -0,0 +1,929 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <sys/reboot.h>
+#include <unistd.h>
+
+#include "sd-bus.h"
+#include "sd-daemon.h"
+
+#include "bus-common-errors.h"
+#include "bus-locator.h"
+#include "bus-map-properties.h"
+#include "bus-unit-util.h"
+#include "chase-symlinks.h"
+#include "dropin.h"
+#include "env-util.h"
+#include "exit-status.h"
+#include "fs-util.h"
+#include "glob-util.h"
+#include "macro.h"
+#include "path-util.h"
+#include "reboot-util.h"
+#include "set.h"
+#include "spawn-ask-password-agent.h"
+#include "spawn-polkit-agent.h"
+#include "stat-util.h"
+#include "systemctl-util.h"
+#include "systemctl.h"
+#include "terminal-util.h"
+#include "verbs.h"
+
+static sd_bus *buses[_BUS_FOCUS_MAX] = {};
+
+int acquire_bus(BusFocus focus, sd_bus **ret) {
+ int r;
+
+ assert(focus < _BUS_FOCUS_MAX);
+ assert(ret);
+
+ /* We only go directly to the manager, if we are using a local transport */
+ if (arg_transport != BUS_TRANSPORT_LOCAL)
+ focus = BUS_FULL;
+
+ if (getenv_bool("SYSTEMCTL_FORCE_BUS") > 0)
+ focus = BUS_FULL;
+
+ if (!buses[focus]) {
+ bool user;
+
+ user = arg_scope != LOOKUP_SCOPE_SYSTEM;
+
+ if (focus == BUS_MANAGER)
+ r = bus_connect_transport_systemd(arg_transport, arg_host, user, &buses[focus]);
+ else
+ r = bus_connect_transport(arg_transport, arg_host, user, &buses[focus]);
+ if (r < 0)
+ return bus_log_connect_error(r, arg_transport);
+
+ (void) sd_bus_set_allow_interactive_authorization(buses[focus], arg_ask_password);
+ }
+
+ *ret = buses[focus];
+ return 0;
+}
+
+void release_busses(void) {
+ for (BusFocus w = 0; w < _BUS_FOCUS_MAX; w++)
+ buses[w] = sd_bus_flush_close_unref(buses[w]);
+}
+
+void ask_password_agent_open_maybe(void) {
+ /* Open the password agent as a child process if necessary */
+
+ if (arg_dry_run)
+ return;
+
+ if (arg_scope != LOOKUP_SCOPE_SYSTEM)
+ return;
+
+ ask_password_agent_open_if_enabled(arg_transport, arg_ask_password);
+}
+
+void polkit_agent_open_maybe(void) {
+ /* Open the polkit agent as a child process if necessary */
+
+ if (arg_scope != LOOKUP_SCOPE_SYSTEM)
+ return;
+
+ polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
+}
+
+int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
+ assert(error);
+
+ if (!sd_bus_error_is_set(error))
+ return r;
+
+ if (sd_bus_error_has_names(error, SD_BUS_ERROR_ACCESS_DENIED,
+ BUS_ERROR_ONLY_BY_DEPENDENCY,
+ BUS_ERROR_NO_ISOLATION,
+ BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
+ return EXIT_NOPERMISSION;
+
+ if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
+ return EXIT_NOTINSTALLED;
+
+ if (sd_bus_error_has_names(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE,
+ SD_BUS_ERROR_NOT_SUPPORTED))
+ return EXIT_NOTIMPLEMENTED;
+
+ if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
+ return EXIT_NOTCONFIGURED;
+
+ if (r != 0)
+ return r;
+
+ return EXIT_FAILURE;
+}
+
+int get_state_one_unit(sd_bus *bus, const char *unit, UnitActiveState *ret_active_state) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *buf = NULL, *dbus_path = NULL;
+ UnitActiveState state;
+ int r;
+
+ assert(unit);
+ assert(ret_active_state);
+
+ dbus_path = unit_dbus_path_from_name(unit);
+ if (!dbus_path)
+ return log_oom();
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ "org.freedesktop.systemd1.Unit",
+ "ActiveState",
+ &error,
+ &buf);
+ if (r < 0)
+ return log_error_errno(r, "Failed to retrieve unit state: %s", bus_error_message(&error, r));
+
+ state = unit_active_state_from_string(buf);
+ if (state < 0)
+ return log_error_errno(state, "Invalid unit state '%s' for: %s", buf, unit);
+
+ *ret_active_state = state;
+ return 0;
+}
+
+int get_unit_list(
+ sd_bus *bus,
+ const char *machine,
+ char **patterns,
+ UnitInfo **unit_infos,
+ int c,
+ sd_bus_message **ret_reply) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+ bool fallback = false;
+
+ assert(bus);
+ assert(unit_infos);
+ assert(ret_reply);
+
+ r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitsByPatterns");
+ if (r < 0)
+ return bus_log_create_error(r);
+
+ r = sd_bus_message_append_strv(m, arg_states);
+ if (r < 0)
+ return bus_log_create_error(r);
+
+ r = sd_bus_message_append_strv(m, patterns);
+ if (r < 0)
+ return bus_log_create_error(r);
+
+ r = sd_bus_call(bus, m, 0, &error, &reply);
+ if (r < 0 && (sd_bus_error_has_names(&error, SD_BUS_ERROR_UNKNOWN_METHOD,
+ SD_BUS_ERROR_ACCESS_DENIED))) {
+ /* Fallback to legacy ListUnitsFiltered method */
+ fallback = true;
+ log_debug_errno(r, "Failed to list units: %s Falling back to ListUnitsFiltered method.", bus_error_message(&error, r));
+ m = sd_bus_message_unref(m);
+ sd_bus_error_free(&error);
+
+ r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitsFiltered");
+ if (r < 0)
+ return bus_log_create_error(r);
+
+ r = sd_bus_message_append_strv(m, arg_states);
+ 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 list units: %s", bus_error_message(&error, r));
+
+ r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ for (;;) {
+ UnitInfo u;
+
+ r = bus_parse_unit_info(reply, &u);
+ if (r < 0)
+ return bus_log_parse_error(r);
+ if (r == 0)
+ break;
+
+ u.machine = machine;
+
+ if (!output_show_unit(&u, fallback ? patterns : NULL))
+ continue;
+
+ if (!GREEDY_REALLOC(*unit_infos, c+1))
+ return log_oom();
+
+ (*unit_infos)[c++] = u;
+ }
+
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ *ret_reply = TAKE_PTR(reply);
+ return c;
+}
+
+int expand_unit_names(sd_bus *bus, char **names, const char* suffix, char ***ret, bool *ret_expanded) {
+ _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
+ int r;
+
+ assert(bus);
+ assert(ret);
+
+ STRV_FOREACH(name, names) {
+ UnitNameMangle options = UNIT_NAME_MANGLE_GLOB | (arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN);
+ char *t;
+
+ r = unit_name_mangle_with_suffix(*name, NULL, options, suffix ?: ".service", &t);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mangle name: %m");
+
+ if (string_is_glob(t))
+ r = strv_consume(&globs, t);
+ else
+ r = strv_consume(&mangled, t);
+ if (r < 0)
+ return log_oom();
+ }
+
+ /* Query the manager only if any of the names are a glob, since this is fairly expensive */
+ bool expanded = !strv_isempty(globs);
+ if (expanded) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_free_ UnitInfo *unit_infos = NULL;
+ size_t n;
+
+ r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
+ if (r < 0)
+ return r;
+
+ n = strv_length(mangled);
+
+ for (int i = 0; i < r; i++) {
+ if (!GREEDY_REALLOC(mangled, n+2))
+ return log_oom();
+
+ mangled[n] = strdup(unit_infos[i].id);
+ if (!mangled[n])
+ return log_oom();
+
+ mangled[++n] = NULL;
+ }
+ }
+
+ if (ret_expanded)
+ *ret_expanded = expanded;
+
+ *ret = TAKE_PTR(mangled);
+ return 0;
+}
+
+int check_triggering_units(sd_bus *bus, const char *unit) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *n = NULL, *dbus_path = NULL, *load_state = NULL;
+ _cleanup_strv_free_ char **triggered_by = NULL;
+ int r;
+
+ r = unit_name_mangle(unit, 0, &n);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mangle unit name: %m");
+
+ r = unit_load_state(bus, n, &load_state);
+ if (r < 0)
+ return r;
+
+ if (streq(load_state, "masked"))
+ return 0;
+
+ dbus_path = unit_dbus_path_from_name(n);
+ if (!dbus_path)
+ return log_oom();
+
+ r = sd_bus_get_property_strv(
+ bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ "org.freedesktop.systemd1.Unit",
+ "TriggeredBy",
+ &error,
+ &triggered_by);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
+
+ bool first = true;
+ STRV_FOREACH(i, triggered_by) {
+ UnitActiveState active_state;
+
+ r = get_state_one_unit(bus, *i, &active_state);
+ if (r < 0)
+ return r;
+
+ if (!IN_SET(active_state, UNIT_ACTIVE, UNIT_RELOADING))
+ continue;
+
+ if (first) {
+ log_warning("Warning: Stopping %s, but it can still be activated by:", n);
+ first = false;
+ }
+
+ log_warning(" %s", *i);
+ }
+
+ return 0;
+}
+
+int need_daemon_reload(sd_bus *bus, const char *unit) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ const char *path;
+ int b, r;
+
+ /* We ignore all errors here, since this is used to show a
+ * warning only */
+
+ /* We don't use unit_dbus_path_from_name() directly since we
+ * don't want to load the unit if it isn't loaded. */
+
+ r = bus_call_method(bus, bus_systemd_mgr, "GetUnit", NULL, &reply, "s", unit);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "o", &path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_get_property_trivial(
+ bus,
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.systemd1.Unit",
+ "NeedDaemonReload",
+ NULL,
+ 'b', &b);
+ if (r < 0)
+ return r;
+
+ return b;
+}
+
+void warn_unit_file_changed(const char *unit) {
+ assert(unit);
+
+ log_warning("Warning: The unit file, source configuration file or drop-ins of %s changed on disk. Run 'systemctl%s daemon-reload' to reload units.",
+ unit,
+ arg_scope == LOOKUP_SCOPE_SYSTEM ? "" : " --user");
+}
+
+int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **ret_unit_path) {
+ assert(lp);
+ assert(unit_name);
+
+ STRV_FOREACH(p, lp->search_path) {
+ _cleanup_free_ char *path = NULL, *lpath = NULL;
+ int r;
+
+ path = path_join(*p, unit_name);
+ if (!path)
+ return log_oom();
+
+ r = chase_symlinks(path, arg_root, 0, &lpath, NULL);
+ if (r == -ENOENT)
+ continue;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0)
+ return log_error_errno(r, "Failed to access path \"%s\": %m", path);
+
+ if (ret_unit_path)
+ *ret_unit_path = TAKE_PTR(lpath);
+
+ return 1;
+ }
+
+ if (ret_unit_path)
+ *ret_unit_path = NULL;
+
+ return 0;
+}
+
+int unit_find_paths(
+ sd_bus *bus,
+ const char *unit_name,
+ LookupPaths *lp,
+ bool force_client_side,
+ Hashmap **cached_name_map,
+ Hashmap **cached_id_map,
+ char **ret_fragment_path,
+ char ***ret_dropin_paths) {
+
+ _cleanup_strv_free_ char **dropins = NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ /**
+ * Finds where the unit is defined on disk. Returns 0 if the unit is not found. Returns 1 if it is
+ * found, and sets:
+ *
+ * - the path to the unit in *ret_frament_path, if it exists on disk,
+ *
+ * - and a strv of existing drop-ins in *ret_dropin_paths, if the arg is not NULL and any dropins
+ * were found.
+ *
+ * Returns -ERFKILL if the unit is masked, and -EKEYREJECTED if the unit file could not be loaded for
+ * some reason (the latter only applies if we are going through the service manager). As special
+ * exception it won't log for these two error cases.
+ */
+
+ assert(unit_name);
+ assert(ret_fragment_path);
+ assert(lp);
+
+ /* Go via the bus to acquire the path, unless we are explicitly told not to, or when the unit name is a template */
+ if (!force_client_side &&
+ !install_client_side() &&
+ !unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *load_state = NULL, *dbus_path = NULL;
+
+ dbus_path = unit_dbus_path_from_name(unit_name);
+ if (!dbus_path)
+ return log_oom();
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ "org.freedesktop.systemd1.Unit",
+ "LoadState",
+ &error,
+ &load_state);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get LoadState: %s", bus_error_message(&error, r));
+
+ if (streq(load_state, "masked"))
+ return -ERFKILL; /* special case: no logging */
+ if (streq(load_state, "not-found")) {
+ r = 0;
+ goto finish;
+ }
+ if (!STR_IN_SET(load_state, "loaded", "bad-setting"))
+ return -EKEYREJECTED; /* special case: no logging */
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ "org.freedesktop.systemd1.Unit",
+ "FragmentPath",
+ &error,
+ &path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get FragmentPath: %s", bus_error_message(&error, r));
+
+ if (ret_dropin_paths) {
+ r = sd_bus_get_property_strv(
+ bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ "org.freedesktop.systemd1.Unit",
+ "DropInPaths",
+ &error,
+ &dropins);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get DropInPaths: %s", bus_error_message(&error, r));
+ }
+ } else {
+ const char *_path;
+ _cleanup_set_free_free_ Set *names = NULL;
+
+ if (!*cached_name_map) {
+ r = unit_file_build_name_map(lp, NULL, cached_id_map, cached_name_map, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ r = unit_file_find_fragment(*cached_id_map, *cached_name_map, unit_name, &_path, &names);
+ if (r < 0)
+ return log_error_errno(r, "Failed to find fragment for '%s': %m", unit_name);
+
+ if (_path) {
+ path = strdup(_path);
+ if (!path)
+ return log_oom();
+ }
+
+ if (ret_dropin_paths) {
+ r = unit_file_find_dropin_paths(arg_root, lp->search_path, NULL,
+ ".d", ".conf",
+ NULL, names, &dropins);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ finish:
+ if (isempty(path)) {
+ *ret_fragment_path = NULL;
+ r = 0;
+ } else {
+ *ret_fragment_path = TAKE_PTR(path);
+ r = 1;
+ }
+
+ if (ret_dropin_paths) {
+ if (!strv_isempty(dropins)) {
+ *ret_dropin_paths = TAKE_PTR(dropins);
+ r = 1;
+ } else
+ *ret_dropin_paths = NULL;
+ }
+
+ if (r == 0 && !arg_force)
+ log_error("No files found for %s.", unit_name);
+
+ return r;
+}
+
+static int unit_find_template_path(
+ const char *unit_name,
+ LookupPaths *lp,
+ char **ret_fragment_path,
+ char **ret_template) {
+
+ _cleanup_free_ char *t = NULL, *f = NULL;
+ int r;
+
+ /* Returns 1 if a fragment was found, 0 if not found, negative on error. */
+
+ r = unit_file_find_path(lp, unit_name, &f);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ if (ret_fragment_path)
+ *ret_fragment_path = TAKE_PTR(f);
+ if (ret_template)
+ *ret_template = NULL;
+ return r; /* found a real unit */
+ }
+
+ r = unit_name_template(unit_name, &t);
+ if (r == -EINVAL) {
+ if (ret_fragment_path)
+ *ret_fragment_path = NULL;
+ if (ret_template)
+ *ret_template = NULL;
+
+ return 0; /* not a template, does not exist */
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine template name: %m");
+
+ r = unit_file_find_path(lp, t, ret_fragment_path);
+ if (r < 0)
+ return r;
+
+ if (ret_template)
+ *ret_template = r > 0 ? TAKE_PTR(t) : NULL;
+
+ return r;
+}
+
+int unit_is_masked(sd_bus *bus, LookupPaths *lp, const char *name) {
+ _cleanup_free_ char *load_state = NULL;
+ int r;
+
+ if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
+ _cleanup_free_ char *path = NULL;
+
+ /* A template cannot be loaded, but it can be still masked, so
+ * we need to use a different method. */
+
+ r = unit_file_find_path(lp, name, &path);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return false;
+ return null_or_empty_path(path);
+ }
+
+ r = unit_load_state(bus, name, &load_state);
+ if (r < 0)
+ return r;
+
+ return streq(load_state, "masked");
+}
+
+int unit_exists(LookupPaths *lp, const char *unit) {
+ typedef struct UnitStateInfo {
+ const char *load_state;
+ const char *active_state;
+ } UnitStateInfo;
+
+ static const struct bus_properties_map property_map[] = {
+ { "LoadState", "s", NULL, offsetof(UnitStateInfo, load_state) },
+ { "ActiveState", "s", NULL, offsetof(UnitStateInfo, active_state) },
+ {},
+ };
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_free_ char *path = NULL;
+ UnitStateInfo info = {};
+ sd_bus *bus;
+ int r;
+
+ if (unit_name_is_valid(unit, UNIT_NAME_TEMPLATE))
+ return unit_find_template_path(unit, lp, NULL, NULL);
+
+ path = unit_dbus_path_from_name(unit);
+ if (!path)
+ return log_oom();
+
+ r = acquire_bus(BUS_MANAGER, &bus);
+ if (r < 0)
+ return r;
+
+ r = bus_map_all_properties(bus, "org.freedesktop.systemd1", path, property_map, 0, &error, &m, &info);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r));
+
+ return !streq_ptr(info.load_state, "not-found") || !streq_ptr(info.active_state, "inactive");
+}
+
+
+int append_unit_dependencies(sd_bus *bus, char **names, char ***ret) {
+ _cleanup_strv_free_ char **with_deps = NULL;
+
+ assert(bus);
+ assert(ret);
+
+ STRV_FOREACH(name, names) {
+ _cleanup_strv_free_ char **deps = NULL;
+
+ if (strv_extend(&with_deps, *name) < 0)
+ return log_oom();
+
+ (void) unit_get_dependencies(bus, *name, &deps);
+
+ if (strv_extend_strv(&with_deps, deps, true) < 0)
+ return log_oom();
+ }
+
+ *ret = TAKE_PTR(with_deps);
+
+ return 0;
+}
+
+int maybe_extend_with_unit_dependencies(sd_bus *bus, char ***list) {
+ _cleanup_strv_free_ char **list_with_deps = NULL;
+ int r;
+
+ assert(bus);
+ assert(list);
+
+ if (!arg_with_dependencies)
+ return 0;
+
+ r = append_unit_dependencies(bus, *list, &list_with_deps);
+ if (r < 0)
+ return log_error_errno(r, "Failed to append unit dependencies: %m");
+
+ strv_free(*list);
+ *list = TAKE_PTR(list_with_deps);
+ return 0;
+}
+
+int unit_get_dependencies(sd_bus *bus, const char *name, char ***ret) {
+ _cleanup_strv_free_ char **deps = NULL;
+
+ static const struct bus_properties_map map[_DEPENDENCY_MAX][7] = {
+ [DEPENDENCY_FORWARD] = {
+ { "Requires", "as", NULL, 0 },
+ { "Requisite", "as", NULL, 0 },
+ { "Wants", "as", NULL, 0 },
+ { "ConsistsOf", "as", NULL, 0 },
+ { "BindsTo", "as", NULL, 0 },
+ { "Upholds", "as", NULL, 0 },
+ {}
+ },
+ [DEPENDENCY_REVERSE] = {
+ { "RequiredBy", "as", NULL, 0 },
+ { "RequisiteOf", "as", NULL, 0 },
+ { "WantedBy", "as", NULL, 0 },
+ { "PartOf", "as", NULL, 0 },
+ { "BoundBy", "as", NULL, 0 },
+ { "UpheldBy", "as", NULL, 0 },
+ {}
+ },
+ [DEPENDENCY_AFTER] = {
+ { "After", "as", NULL, 0 },
+ {}
+ },
+ [DEPENDENCY_BEFORE] = {
+ { "Before", "as", NULL, 0 },
+ {}
+ },
+ };
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *dbus_path = NULL;
+ int r;
+
+ assert(bus);
+ assert(name);
+ assert(ret);
+
+ dbus_path = unit_dbus_path_from_name(name);
+ if (!dbus_path)
+ return log_oom();
+
+ r = bus_map_all_properties(bus,
+ "org.freedesktop.systemd1",
+ dbus_path,
+ map[arg_dependency],
+ BUS_MAP_STRDUP,
+ &error,
+ NULL,
+ &deps);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get properties of %s: %s", name, bus_error_message(&error, r));
+
+ strv_uniq(deps); /* Sometimes a unit might have multiple deps on the other unit,
+ * but we still want to show it just once. */
+ *ret = TAKE_PTR(deps);
+
+ return 0;
+}
+
+const char* unit_type_suffix(const char *unit) {
+ const char *dot;
+
+ dot = strrchr(unit, '.');
+ if (!dot)
+ return "";
+
+ return dot + 1;
+}
+
+bool output_show_unit(const UnitInfo *u, char **patterns) {
+ assert(u);
+
+ if (!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
+ return false;
+
+ if (arg_types && !strv_contains(arg_types, unit_type_suffix(u->id)))
+ return false;
+
+ if (arg_all)
+ return true;
+
+ /* Note that '--all' is not purely a state filter, but also a filter that hides units that "follow"
+ * other units (which is used for device units that appear under different names). */
+ if (!isempty(u->following))
+ return false;
+
+ if (!strv_isempty(arg_states))
+ return true;
+
+ /* By default show all units except the ones in inactive state and with no pending job */
+ if (u->job_id > 0)
+ return true;
+
+ if (streq(u->active_state, "inactive"))
+ return false;
+
+ return true;
+}
+
+bool install_client_side(void) {
+ /* Decides when to execute enable/disable/... operations client-side rather than server-side. */
+
+ if (running_in_chroot_or_offline())
+ return true;
+
+ if (sd_booted() <= 0)
+ return true;
+
+ if (!isempty(arg_root))
+ return true;
+
+ if (arg_scope == LOOKUP_SCOPE_GLOBAL)
+ return true;
+
+ /* Unsupported environment variable, mostly for debugging purposes */
+ if (getenv_bool("SYSTEMCTL_INSTALL_CLIENT_SIDE") > 0)
+ return true;
+
+ return false;
+}
+
+int output_table(Table *table) {
+ int r;
+
+ assert(table);
+
+ 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);
+
+ return 0;
+}
+
+bool show_preset_for_state(UnitFileState state) {
+ /* Don't show preset state in those unit file states, it'll only confuse users. */
+ return !IN_SET(state,
+ UNIT_FILE_ALIAS,
+ UNIT_FILE_STATIC,
+ UNIT_FILE_GENERATED,
+ UNIT_FILE_TRANSIENT);
+}
+
+UnitFileFlags unit_file_flags_from_args(void) {
+ return (arg_runtime ? UNIT_FILE_RUNTIME : 0) |
+ (arg_force ? UNIT_FILE_FORCE : 0);
+}
+
+int mangle_names(const char *operation, char **original_names, char ***ret_mangled_names) {
+ _cleanup_strv_free_ char **l = NULL;
+ char **i;
+ int r;
+
+ assert(ret_mangled_names);
+
+ l = i = new(char*, strv_length(original_names) + 1);
+ if (!l)
+ return log_oom();
+
+ STRV_FOREACH(name, original_names) {
+
+ /* When enabling units qualified path names are OK, too, hence allow them explicitly. */
+
+ if (is_path(*name))
+ r = path_make_absolute_cwd(*name, i);
+ else
+ r = unit_name_mangle_with_suffix(*name, operation,
+ arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
+ ".service", i);
+ if (r < 0) {
+ *i = NULL;
+ return log_error_errno(r, "Failed to mangle unit name or path '%s': %m", *name);
+ }
+
+ i++;
+ }
+
+ *i = NULL;
+ *ret_mangled_names = TAKE_PTR(l);
+
+ return 0;
+}
+
+int halt_now(enum action a) {
+ /* The kernel will automatically flush ATA disks and suchlike on reboot(), but the file systems need
+ * to be synced explicitly in advance. */
+ if (!arg_no_sync && !arg_dry_run)
+ (void) sync();
+
+ /* Make sure C-A-D is handled by the kernel from this point on... */
+ if (!arg_dry_run)
+ (void) reboot(RB_ENABLE_CAD);
+
+ switch (a) {
+
+ case ACTION_HALT:
+ if (!arg_quiet)
+ log_info("Halting.");
+ if (arg_dry_run)
+ return 0;
+ (void) reboot(RB_HALT_SYSTEM);
+ return -errno;
+
+ case ACTION_POWEROFF:
+ if (!arg_quiet)
+ log_info("Powering off.");
+ if (arg_dry_run)
+ return 0;
+ (void) reboot(RB_POWER_OFF);
+ return -errno;
+
+ case ACTION_KEXEC:
+ case ACTION_REBOOT:
+ return reboot_with_parameter(REBOOT_FALLBACK |
+ (arg_quiet ? 0 : REBOOT_LOG) |
+ (arg_dry_run ? REBOOT_DRY_RUN : 0));
+
+ default:
+ assert_not_reached();
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 17:46:28 +0000