+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 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 <http://www.gnu.org/licenses/>.
-***/
-
-#include "strv.h"
-#include "set.h"
-#include "bus-internal.h"
-#include "bus-message.h"
-#include "bus-type.h"
-#include "bus-signature.h"
-#include "bus-introspect.h"
-#include "bus-util.h"
-#include "bus-slot.h"
-#include "bus-objects.h"
-
-static int node_vtable_get_userdata(
- sd_bus *bus,
- const char *path,
- struct node_vtable *c,
- void **userdata,
- sd_bus_error *error) {
-
- sd_bus_slot *s;
- void *u;
- int r;
-
- assert(bus);
- assert(path);
- assert(c);
-
- s = container_of(c, sd_bus_slot, node_vtable);
- u = s->userdata;
- if (c->find) {
- bus->current_slot = sd_bus_slot_ref(s);
- bus->current_userdata = u;
- r = c->find(bus, path, c->interface, u, &u, error);
- bus->current_userdata = NULL;
- bus->current_slot = sd_bus_slot_unref(s);
-
- if (r < 0)
- return r;
- if (sd_bus_error_is_set(error))
- return -sd_bus_error_get_errno(error);
- if (r == 0)
- return r;
- }
-
- if (userdata)
- *userdata = u;
-
- return 1;
-}
-
-static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) {
- assert(p);
-
- return (uint8_t*) u + p->x.property.offset;
-}
-
-static int vtable_property_get_userdata(
- sd_bus *bus,
- const char *path,
- struct vtable_member *p,
- void **userdata,
- sd_bus_error *error) {
-
- void *u;
- int r;
-
- assert(bus);
- assert(path);
- assert(p);
- assert(userdata);
-
- r = node_vtable_get_userdata(bus, path, p->parent, &u, error);
- if (r <= 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- *userdata = vtable_property_convert_userdata(p->vtable, u);
- return 1;
-}
-
-static int add_enumerated_to_set(
- sd_bus *bus,
- const char *prefix,
- struct node_enumerator *first,
- Set *s,
- sd_bus_error *error) {
-
- struct node_enumerator *c;
- int r;
-
- assert(bus);
- assert(prefix);
- assert(s);
-
- LIST_FOREACH(enumerators, c, first) {
- char **children = NULL, **k;
- sd_bus_slot *slot;
-
- if (bus->nodes_modified)
- return 0;
-
- slot = container_of(c, sd_bus_slot, node_enumerator);
-
- bus->current_slot = sd_bus_slot_ref(slot);
- bus->current_userdata = slot->userdata;
- r = c->callback(bus, prefix, slot->userdata, &children, error);
- bus->current_userdata = NULL;
- bus->current_slot = sd_bus_slot_unref(slot);
-
- if (r < 0)
- return r;
- if (sd_bus_error_is_set(error))
- return -sd_bus_error_get_errno(error);
-
- STRV_FOREACH(k, children) {
- if (r < 0) {
- free(*k);
- continue;
- }
-
- if (!object_path_is_valid(*k)){
- free(*k);
- r = -EINVAL;
- continue;
- }
-
- if (!object_path_startswith(*k, prefix)) {
- free(*k);
- continue;
- }
-
- r = set_consume(s, *k);
- if (r == -EEXIST)
- r = 0;
- }
-
- free(children);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int add_subtree_to_set(
- sd_bus *bus,
- const char *prefix,
- struct node *n,
- Set *s,
- sd_bus_error *error) {
-
- struct node *i;
- int r;
-
- assert(bus);
- assert(prefix);
- assert(n);
- assert(s);
-
- r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- LIST_FOREACH(siblings, i, n->child) {
- char *t;
-
- if (!object_path_startswith(i->path, prefix))
- continue;
-
- t = strdup(i->path);
- if (!t)
- return -ENOMEM;
-
- r = set_consume(s, t);
- if (r < 0 && r != -EEXIST)
- return r;
-
- r = add_subtree_to_set(bus, prefix, i, s, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 0;
-}
-
-static int get_child_nodes(
- sd_bus *bus,
- const char *prefix,
- struct node *n,
- Set **_s,
- sd_bus_error *error) {
-
- Set *s = NULL;
- int r;
-
- assert(bus);
- assert(prefix);
- assert(n);
- assert(_s);
-
- s = set_new(&string_hash_ops);
- if (!s)
- return -ENOMEM;
-
- r = add_subtree_to_set(bus, prefix, n, s, error);
- if (r < 0) {
- set_free_free(s);
- return r;
- }
-
- *_s = s;
- return 0;
-}
-
-static int node_callbacks_run(
- sd_bus *bus,
- sd_bus_message *m,
- struct node_callback *first,
- bool require_fallback,
- bool *found_object) {
-
- struct node_callback *c;
- int r;
-
- assert(bus);
- assert(m);
- assert(found_object);
-
- LIST_FOREACH(callbacks, c, first) {
- _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
- sd_bus_slot *slot;
-
- if (bus->nodes_modified)
- return 0;
-
- if (require_fallback && !c->is_fallback)
- continue;
-
- *found_object = true;
-
- if (c->last_iteration == bus->iteration_counter)
- continue;
-
- c->last_iteration = bus->iteration_counter;
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
-
- slot = container_of(c, sd_bus_slot, node_callback);
-
- bus->current_slot = sd_bus_slot_ref(slot);
- bus->current_handler = c->callback;
- bus->current_userdata = slot->userdata;
- r = c->callback(bus, m, slot->userdata, &error_buffer);
- bus->current_userdata = NULL;
- bus->current_handler = NULL;
- bus->current_slot = sd_bus_slot_unref(slot);
-
- r = bus_maybe_reply_error(m, r, &error_buffer);
- if (r != 0)
- return r;
- }
-
- return 0;
-}
-
-#define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF)
-
-static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) {
- uint64_t cap;
- int r;
-
- assert(bus);
- assert(m);
- assert(c);
-
- /* If the entire bus is trusted let's grant access */
- if (bus->trusted)
- return 0;
-
- /* If the member is marked UNPRIVILEGED let's grant access */
- if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED)
- return 0;
-
- /* Check have the caller has the requested capability
- * set. Note that the flags value contains the capability
- * number plus one, which we need to subtract here. We do this
- * so that we have 0 as special value for "default
- * capability". */
- cap = CAPABILITY_SHIFT(c->vtable->flags);
- if (cap == 0)
- cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags);
- if (cap == 0)
- cap = CAP_SYS_ADMIN;
- else
- cap --;
-
- r = sd_bus_query_sender_privilege(m, cap);
- if (r < 0)
- return r;
- if (r > 0)
- return 0;
-
- return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member);
-}
-
-static int method_callbacks_run(
- sd_bus *bus,
- sd_bus_message *m,
- struct vtable_member *c,
- bool require_fallback,
- bool *found_object) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- const char *signature;
- void *u;
- int r;
-
- assert(bus);
- assert(m);
- assert(c);
- assert(found_object);
-
- if (require_fallback && !c->parent->is_fallback)
- return 0;
-
- r = check_access(bus, m, c, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
-
- r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error);
- if (r <= 0)
- return bus_maybe_reply_error(m, r, &error);
- if (bus->nodes_modified)
- return 0;
-
- *found_object = true;
-
- if (c->last_iteration == bus->iteration_counter)
- return 0;
-
- c->last_iteration = bus->iteration_counter;
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
-
- signature = sd_bus_message_get_signature(m, true);
- if (!signature)
- return -EINVAL;
-
- if (!streq(strempty(c->vtable->x.method.signature), signature))
- return sd_bus_reply_method_errorf(
- m,
- SD_BUS_ERROR_INVALID_ARGS,
- "Invalid arguments '%s' to call %s.%s(), expecting '%s'.",
- signature, c->interface, c->member, strempty(c->vtable->x.method.signature));
-
- /* Keep track what the signature of the reply to this message
- * should be, so that this can be enforced when sealing the
- * reply. */
- m->enforced_reply_signature = strempty(c->vtable->x.method.result);
-
- if (c->vtable->x.method.handler) {
- sd_bus_slot *slot;
-
- slot = container_of(c->parent, sd_bus_slot, node_vtable);
-
- bus->current_slot = sd_bus_slot_ref(slot);
- bus->current_handler = c->vtable->x.method.handler;
- bus->current_userdata = u;
- r = c->vtable->x.method.handler(bus, m, u, &error);
- bus->current_userdata = NULL;
- bus->current_handler = NULL;
- bus->current_slot = sd_bus_slot_unref(slot);
-
- return bus_maybe_reply_error(m, r, &error);
- }
-
- /* If the method callback is NULL, make this a successful NOP */
- r = sd_bus_reply_method_return(m, NULL);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int invoke_property_get(
- sd_bus *bus,
- sd_bus_slot *slot,
- const sd_bus_vtable *v,
- const char *path,
- const char *interface,
- const char *property,
- sd_bus_message *reply,
- void *userdata,
- sd_bus_error *error) {
-
- const void *p;
- int r;
-
- assert(bus);
- assert(slot);
- assert(v);
- assert(path);
- assert(interface);
- assert(property);
- assert(reply);
-
- if (v->x.property.get) {
-
- bus->current_slot = sd_bus_slot_ref(slot);
- bus->current_userdata = userdata;
- r = v->x.property.get(bus, path, interface, property, reply, userdata, error);
- bus->current_userdata = NULL;
- bus->current_slot = sd_bus_slot_unref(slot);
-
- if (r < 0)
- return r;
- if (sd_bus_error_is_set(error))
- return -sd_bus_error_get_errno(error);
- return r;
- }
-
- /* Automatic handling if no callback is defined. */
-
- if (streq(v->x.property.signature, "as"))
- return sd_bus_message_append_strv(reply, *(char***) userdata);
-
- assert(signature_is_single(v->x.property.signature, false));
- assert(bus_type_is_basic(v->x.property.signature[0]));
-
- switch (v->x.property.signature[0]) {
-
- case SD_BUS_TYPE_STRING:
- case SD_BUS_TYPE_SIGNATURE:
- p = strempty(*(char**) userdata);
- break;
-
- case SD_BUS_TYPE_OBJECT_PATH:
- p = *(char**) userdata;
- assert(p);
- break;
-
- default:
- p = userdata;
- break;
- }
-
- return sd_bus_message_append_basic(reply, v->x.property.signature[0], p);
-}
-
-static int invoke_property_set(
- sd_bus *bus,
- sd_bus_slot *slot,
- const sd_bus_vtable *v,
- const char *path,
- const char *interface,
- const char *property,
- sd_bus_message *value,
- void *userdata,
- sd_bus_error *error) {
-
- int r;
-
- assert(bus);
- assert(slot);
- assert(v);
- assert(path);
- assert(interface);
- assert(property);
- assert(value);
-
- if (v->x.property.set) {
-
- bus->current_slot = sd_bus_slot_ref(slot);
- bus->current_userdata = userdata;
- r = v->x.property.set(bus, path, interface, property, value, userdata, error);
- bus->current_userdata = NULL;
- bus->current_slot = sd_bus_slot_unref(slot);
-
- if (r < 0)
- return r;
- if (sd_bus_error_is_set(error))
- return -sd_bus_error_get_errno(error);
- return r;
- }
-
- /* Automatic handling if no callback is defined. */
-
- assert(signature_is_single(v->x.property.signature, false));
- assert(bus_type_is_basic(v->x.property.signature[0]));
-
- switch (v->x.property.signature[0]) {
-
- case SD_BUS_TYPE_STRING:
- case SD_BUS_TYPE_OBJECT_PATH:
- case SD_BUS_TYPE_SIGNATURE: {
- const char *p;
- char *n;
-
- r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p);
- if (r < 0)
- return r;
-
- n = strdup(p);
- if (!n)
- return -ENOMEM;
-
- free(*(char**) userdata);
- *(char**) userdata = n;
-
- break;
- }
-
- default:
- r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata);
- if (r < 0)
- return r;
-
- break;
- }
-
- return 1;
-}
-
-static int property_get_set_callbacks_run(
- sd_bus *bus,
- sd_bus_message *m,
- struct vtable_member *c,
- bool require_fallback,
- bool is_get,
- bool *found_object) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- sd_bus_slot *slot;
- void *u = NULL;
- int r;
-
- assert(bus);
- assert(m);
- assert(c);
- assert(found_object);
-
- if (require_fallback && !c->parent->is_fallback)
- return 0;
-
- r = vtable_property_get_userdata(bus, m->path, c, &u, &error);
- if (r <= 0)
- return bus_maybe_reply_error(m, r, &error);
- if (bus->nodes_modified)
- return 0;
-
- slot = container_of(c->parent, sd_bus_slot, node_vtable);
-
- *found_object = true;
-
- r = sd_bus_message_new_method_return(m, &reply);
- if (r < 0)
- return r;
-
- if (is_get) {
- /* Note that we do not protect against reexecution
- * here (using the last_iteration check, see below),
- * should the node tree have changed and we got called
- * again. We assume that property Get() calls are
- * ultimately without side-effects or if they aren't
- * then at least idempotent. */
-
- r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature);
- if (r < 0)
- return r;
-
- /* Note that we do not do an access check here. Read
- * access to properties is always unrestricted, since
- * PropertiesChanged signals broadcast contents
- * anyway. */
-
- r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
-
- if (bus->nodes_modified)
- return 0;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- } else {
- const char *signature = NULL;
- char type = 0;
-
- if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member);
-
- /* Avoid that we call the set routine more than once
- * if the processing of this message got restarted
- * because the node tree changed. */
- if (c->last_iteration == bus->iteration_counter)
- return 0;
-
- c->last_iteration = bus->iteration_counter;
-
- r = sd_bus_message_peek_type(m, &type, &signature);
- if (r < 0)
- return r;
-
- if (type != 'v' || !streq(strempty(signature), strempty(c->vtable->x.property.signature)))
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Incorrect parameters for property '%s', expected '%s', got '%s'.", c->member, strempty(c->vtable->x.property.signature), strempty(signature));
-
- r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature);
- if (r < 0)
- return r;
-
- r = check_access(bus, m, c, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
-
- r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
-
- if (bus->nodes_modified)
- return 0;
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- return r;
- }
-
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int vtable_append_one_property(
- sd_bus *bus,
- sd_bus_message *reply,
- const char *path,
- struct node_vtable *c,
- const sd_bus_vtable *v,
- void *userdata,
- sd_bus_error *error) {
-
- sd_bus_slot *slot;
- int r;
-
- assert(bus);
- assert(reply);
- assert(path);
- assert(c);
- assert(v);
-
- r = sd_bus_message_open_container(reply, 'e', "sv");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(reply, "s", v->x.property.member);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'v', v->x.property.signature);
- if (r < 0)
- return r;
-
- slot = container_of(c, sd_bus_slot, node_vtable);
-
- r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-static int vtable_append_all_properties(
- sd_bus *bus,
- sd_bus_message *reply,
- const char *path,
- struct node_vtable *c,
- void *userdata,
- sd_bus_error *error) {
-
- const sd_bus_vtable *v;
- int r;
-
- assert(bus);
- assert(reply);
- assert(path);
- assert(c);
-
- if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
- return 1;
-
- for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
- if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
- continue;
-
- if (v->flags & SD_BUS_VTABLE_HIDDEN)
- continue;
-
- r = vtable_append_one_property(bus, reply, path, c, v, userdata, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 1;
-}
-
-static int property_get_all_callbacks_run(
- sd_bus *bus,
- sd_bus_message *m,
- struct node_vtable *first,
- bool require_fallback,
- const char *iface,
- bool *found_object) {
-
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- struct node_vtable *c;
- bool found_interface;
- int r;
-
- assert(bus);
- assert(m);
- assert(found_object);
-
- r = sd_bus_message_new_method_return(m, &reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'a', "{sv}");
- if (r < 0)
- return r;
-
- found_interface = !iface ||
- streq(iface, "org.freedesktop.DBus.Properties") ||
- streq(iface, "org.freedesktop.DBus.Peer") ||
- streq(iface, "org.freedesktop.DBus.Introspectable");
-
- LIST_FOREACH(vtables, c, first) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- void *u;
-
- if (require_fallback && !c->is_fallback)
- continue;
-
- r = node_vtable_get_userdata(bus, m->path, c, &u, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- *found_object = true;
-
- if (iface && !streq(c->interface, iface))
- continue;
- found_interface = true;
-
- r = vtable_append_all_properties(bus, reply, m->path, c, u, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
- if (bus->nodes_modified)
- return 0;
- }
-
- if (!found_interface) {
- r = sd_bus_reply_method_errorf(
- m,
- SD_BUS_ERROR_UNKNOWN_INTERFACE,
- "Unknown interface '%s'.", iface);
- if (r < 0)
- return r;
-
- return 1;
- }
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int bus_node_exists(
- sd_bus *bus,
- struct node *n,
- const char *path,
- bool require_fallback) {
-
- struct node_vtable *c;
- struct node_callback *k;
- int r;
-
- assert(bus);
- assert(n);
- assert(path);
-
- /* Tests if there's anything attached directly to this node
- * for the specified path */
-
- if (!require_fallback && (n->enumerators || n->object_managers))
- return true;
-
- LIST_FOREACH(callbacks, k, n->callbacks) {
- if (require_fallback && !k->is_fallback)
- continue;
-
- return 1;
- }
-
- LIST_FOREACH(vtables, c, n->vtables) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- if (require_fallback && !c->is_fallback)
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, NULL, &error);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 0;
-}
-
-static int process_introspect(
- sd_bus *bus,
- sd_bus_message *m,
- struct node *n,
- bool require_fallback,
- bool *found_object) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_set_free_free_ Set *s = NULL;
- const char *previous_interface = NULL;
- struct introspect intro;
- struct node_vtable *c;
- bool empty;
- int r;
-
- assert(bus);
- assert(m);
- assert(n);
- assert(found_object);
-
- r = get_child_nodes(bus, m->path, n, &s, &error);
- if (r < 0)
- return bus_maybe_reply_error(m, r, &error);
- if (bus->nodes_modified)
- return 0;
-
- r = introspect_begin(&intro, bus->trusted);
- if (r < 0)
- return r;
-
- r = introspect_write_default_interfaces(&intro, !require_fallback && n->object_managers);
- if (r < 0)
- return r;
-
- empty = set_isempty(s);
-
- LIST_FOREACH(vtables, c, n->vtables) {
- if (require_fallback && !c->is_fallback)
- continue;
-
- r = node_vtable_get_userdata(bus, m->path, c, NULL, &error);
- if (r < 0) {
- r = bus_maybe_reply_error(m, r, &error);
- goto finish;
- }
- if (bus->nodes_modified) {
- r = 0;
- goto finish;
- }
- if (r == 0)
- continue;
-
- empty = false;
-
- if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
- continue;
-
- if (!streq_ptr(previous_interface, c->interface)) {
-
- if (previous_interface)
- fputs(" </interface>\n", intro.f);
-
- fprintf(intro.f, " <interface name=\"%s\">\n", c->interface);
- }
-
- r = introspect_write_interface(&intro, c->vtable);
- if (r < 0)
- goto finish;
-
- previous_interface = c->interface;
- }
-
- if (previous_interface)
- fputs(" </interface>\n", intro.f);
-
- if (empty) {
- /* Nothing?, let's see if we exist at all, and if not
- * refuse to do anything */
- r = bus_node_exists(bus, n, m->path, require_fallback);
- if (r <= 0)
- goto finish;
- if (bus->nodes_modified) {
- r = 0;
- goto finish;
- }
- }
-
- *found_object = true;
-
- r = introspect_write_child_nodes(&intro, s, m->path);
- if (r < 0)
- goto finish;
-
- r = introspect_finish(&intro, bus, m, &reply);
- if (r < 0)
- goto finish;
-
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- goto finish;
-
- r = 1;
-
-finish:
- introspect_free(&intro);
- return r;
-}
-
-static int object_manager_serialize_path(
- sd_bus *bus,
- sd_bus_message *reply,
- const char *prefix,
- const char *path,
- bool require_fallback,
- sd_bus_error *error) {
-
- const char *previous_interface = NULL;
- bool found_something = false;
- struct node_vtable *i;
- struct node *n;
- int r;
-
- assert(bus);
- assert(reply);
- assert(prefix);
- assert(path);
- assert(error);
-
- n = hashmap_get(bus->nodes, prefix);
- if (!n)
- return 0;
-
- LIST_FOREACH(vtables, i, n->vtables) {
- void *u;
-
- if (require_fallback && !i->is_fallback)
- continue;
-
- r = node_vtable_get_userdata(bus, path, i, &u, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- if (!found_something) {
-
- /* Open the object part */
-
- r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(reply, "o", path);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}");
- if (r < 0)
- return r;
-
- found_something = true;
- }
-
- if (!streq_ptr(previous_interface, i->interface)) {
-
- /* Maybe close the previous interface part */
-
- if (previous_interface) {
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
- }
-
- /* Open the new interface part */
-
- r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(reply, "s", i->interface);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'a', "{sv}");
- if (r < 0)
- return r;
- }
-
- r = vtable_append_all_properties(bus, reply, path, i, u, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- previous_interface = i->interface;
- }
-
- if (previous_interface) {
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
- }
-
- if (found_something) {
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
- }
-
- return 1;
-}
-
-static int object_manager_serialize_path_and_fallbacks(
- sd_bus *bus,
- sd_bus_message *reply,
- const char *path,
- sd_bus_error *error) {
-
- char *prefix;
- int r;
-
- assert(bus);
- assert(reply);
- assert(path);
- assert(error);
-
- /* First, add all vtables registered for this path */
- r = object_manager_serialize_path(bus, reply, path, path, false, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- /* Second, add fallback vtables registered for any of the prefixes */
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = object_manager_serialize_path(bus, reply, prefix, path, true, error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 0;
-}
-
-static int process_get_managed_objects(
- sd_bus *bus,
- sd_bus_message *m,
- struct node *n,
- bool require_fallback,
- bool *found_object) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_set_free_free_ Set *s = NULL;
- Iterator i;
- char *path;
- int r;
-
- assert(bus);
- assert(m);
- assert(n);
- assert(found_object);
-
- /* Spec says, GetManagedObjects() is only implemented on the root of a
- * sub-tree. Therefore, we require a registered object-manager on
- * exactly the queried path, otherwise, we refuse to respond. */
-
- if (require_fallback || !n->object_managers)
- return 0;
-
- r = get_child_nodes(bus, m->path, n, &s, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- r = sd_bus_message_new_method_return(m, &reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}");
- if (r < 0)
- return r;
-
- SET_FOREACH(path, s, i) {
- r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error);
- if (r < 0)
- return r;
-
- if (bus->nodes_modified)
- return 0;
- }
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int object_find_and_run(
- sd_bus *bus,
- sd_bus_message *m,
- const char *p,
- bool require_fallback,
- bool *found_object) {
-
- struct node *n;
- struct vtable_member vtable_key, *v;
- int r;
-
- assert(bus);
- assert(m);
- assert(p);
- assert(found_object);
-
- n = hashmap_get(bus->nodes, p);
- if (!n)
- return 0;
-
- /* First, try object callbacks */
- r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- if (!m->interface || !m->member)
- return 0;
-
- /* Then, look for a known method */
- vtable_key.path = (char*) p;
- vtable_key.interface = m->interface;
- vtable_key.member = m->member;
-
- v = hashmap_get(bus->vtable_methods, &vtable_key);
- if (v) {
- r = method_callbacks_run(bus, m, v, require_fallback, found_object);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- /* Then, look for a known property */
- if (streq(m->interface, "org.freedesktop.DBus.Properties")) {
- bool get = false;
-
- get = streq(m->member, "Get");
-
- if (get || streq(m->member, "Set")) {
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
-
- vtable_key.path = (char*) p;
-
- r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member);
- if (r < 0)
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters");
-
- v = hashmap_get(bus->vtable_properties, &vtable_key);
- if (v) {
- r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object);
- if (r != 0)
- return r;
- }
-
- } else if (streq(m->member, "GetAll")) {
- const char *iface;
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
-
- r = sd_bus_message_read(m, "s", &iface);
- if (r < 0)
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter");
-
- if (iface[0] == 0)
- iface = NULL;
-
- r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object);
- if (r != 0)
- return r;
- }
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
-
- if (!isempty(sd_bus_message_get_signature(m, true)))
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
-
- r = process_introspect(bus, m, n, require_fallback, found_object);
- if (r != 0)
- return r;
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) {
-
- if (!isempty(sd_bus_message_get_signature(m, true)))
- return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
-
- r = process_get_managed_objects(bus, m, n, require_fallback, found_object);
- if (r != 0)
- return r;
- }
-
- if (bus->nodes_modified)
- return 0;
-
- if (!*found_object) {
- r = bus_node_exists(bus, n, m->path, require_fallback);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r > 0)
- *found_object = true;
- }
-
- return 0;
-}
-
-int bus_process_object(sd_bus *bus, sd_bus_message *m) {
- int r;
- size_t pl;
- bool found_object = false;
-
- assert(bus);
- assert(m);
-
- if (bus->hello_flags & KDBUS_HELLO_MONITOR)
- return 0;
-
- if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
- return 0;
-
- if (hashmap_isempty(bus->nodes))
- return 0;
-
- /* Never respond to broadcast messages */
- if (bus->bus_client && !m->destination)
- return 0;
-
- assert(m->path);
- assert(m->member);
-
- pl = strlen(m->path);
- do {
- char prefix[pl+1];
-
- bus->nodes_modified = false;
-
- r = object_find_and_run(bus, m, m->path, false, &found_object);
- if (r != 0)
- return r;
-
- /* Look for fallback prefixes */
- OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) {
-
- if (bus->nodes_modified)
- break;
-
- r = object_find_and_run(bus, m, prefix, true, &found_object);
- if (r != 0)
- return r;
- }
-
- } while (bus->nodes_modified);
-
- if (!found_object)
- return 0;
-
- if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") ||
- sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set"))
- r = sd_bus_reply_method_errorf(
- m,
- SD_BUS_ERROR_UNKNOWN_PROPERTY,
- "Unknown property or interface.");
- else
- r = sd_bus_reply_method_errorf(
- m,
- SD_BUS_ERROR_UNKNOWN_METHOD,
- "Unknown method '%s' or interface '%s'.", m->member, m->interface);
-
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static struct node *bus_node_allocate(sd_bus *bus, const char *path) {
- struct node *n, *parent;
- const char *e;
- _cleanup_free_ char *s = NULL;
- char *p;
- int r;
-
- assert(bus);
- assert(path);
- assert(path[0] == '/');
-
- n = hashmap_get(bus->nodes, path);
- if (n)
- return n;
-
- r = hashmap_ensure_allocated(&bus->nodes, &string_hash_ops);
- if (r < 0)
- return NULL;
-
- s = strdup(path);
- if (!s)
- return NULL;
-
- if (streq(path, "/"))
- parent = NULL;
- else {
- e = strrchr(path, '/');
- assert(e);
-
- p = strndupa(path, MAX(1, path - e));
-
- parent = bus_node_allocate(bus, p);
- if (!parent)
- return NULL;
- }
-
- n = new0(struct node, 1);
- if (!n)
- return NULL;
-
- n->parent = parent;
- n->path = s;
- s = NULL; /* do not free */
-
- r = hashmap_put(bus->nodes, n->path, n);
- if (r < 0) {
- free(n->path);
- free(n);
- return NULL;
- }
-
- if (parent)
- LIST_PREPEND(siblings, parent->child, n);
-
- return n;
-}
-
-void bus_node_gc(sd_bus *b, struct node *n) {
- assert(b);
-
- if (!n)
- return;
-
- if (n->child ||
- n->callbacks ||
- n->vtables ||
- n->enumerators ||
- n->object_managers)
- return;
-
- assert(hashmap_remove(b->nodes, n->path) == n);
-
- if (n->parent)
- LIST_REMOVE(siblings, n->parent->child, n);
-
- free(n->path);
- bus_node_gc(b, n->parent);
- free(n);
-}
-
-static int bus_add_object(
- sd_bus *bus,
- sd_bus_slot **slot,
- bool fallback,
- const char *path,
- sd_bus_message_handler_t callback,
- void *userdata) {
-
- sd_bus_slot *s;
- struct node *n;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(callback, -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- n = bus_node_allocate(bus, path);
- if (!n)
- return -ENOMEM;
-
- s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata);
- if (!s) {
- r = -ENOMEM;
- goto fail;
- }
-
- s->node_callback.callback = callback;
- s->node_callback.is_fallback = fallback;
-
- s->node_callback.node = n;
- LIST_PREPEND(callbacks, n->callbacks, &s->node_callback);
- bus->nodes_modified = true;
-
- if (slot)
- *slot = s;
-
- return 0;
-
-fail:
- sd_bus_slot_unref(s);
- bus_node_gc(bus, n);
-
- return r;
-}
-
-_public_ int sd_bus_add_object(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *path,
- sd_bus_message_handler_t callback,
- void *userdata) {
-
- return bus_add_object(bus, slot, false, path, callback, userdata);
-}
-
-_public_ int sd_bus_add_fallback(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *prefix,
- sd_bus_message_handler_t callback,
- void *userdata) {
-
- return bus_add_object(bus, slot, true, prefix, callback, userdata);
-}
-
-static unsigned long vtable_member_hash_func(const void *a, const uint8_t hash_key[HASH_KEY_SIZE]) {
- const struct vtable_member *m = a;
- uint8_t hash_key2[HASH_KEY_SIZE];
- unsigned long ret;
-
- assert(m);
-
- ret = string_hash_func(m->path, hash_key);
-
- /* Use a slightly different hash key for the interface */
- memcpy(hash_key2, hash_key, HASH_KEY_SIZE);
- hash_key2[0]++;
- ret ^= string_hash_func(m->interface, hash_key2);
-
- /* And an even different one for the member */
- hash_key2[0]++;
- ret ^= string_hash_func(m->member, hash_key2);
-
- return ret;
-}
-
-static int vtable_member_compare_func(const void *a, const void *b) {
- const struct vtable_member *x = a, *y = b;
- int r;
-
- assert(x);
- assert(y);
-
- r = strcmp(x->path, y->path);
- if (r != 0)
- return r;
-
- r = strcmp(x->interface, y->interface);
- if (r != 0)
- return r;
-
- return strcmp(x->member, y->member);
-}
-
-static const struct hash_ops vtable_member_hash_ops = {
- .hash = vtable_member_hash_func,
- .compare = vtable_member_compare_func
-};
-
-static int add_object_vtable_internal(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *path,
- const char *interface,
- const sd_bus_vtable *vtable,
- bool fallback,
- sd_bus_object_find_t find,
- void *userdata) {
-
- sd_bus_slot *s = NULL;
- struct node_vtable *i, *existing = NULL;
- const sd_bus_vtable *v;
- struct node *n;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(interface_name_is_valid(interface), -EINVAL);
- assert_return(vtable, -EINVAL);
- assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL);
- assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
- assert_return(!streq(interface, "org.freedesktop.DBus.Properties") &&
- !streq(interface, "org.freedesktop.DBus.Introspectable") &&
- !streq(interface, "org.freedesktop.DBus.Peer") &&
- !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL);
-
- r = hashmap_ensure_allocated(&bus->vtable_methods, &vtable_member_hash_ops);
- if (r < 0)
- return r;
-
- r = hashmap_ensure_allocated(&bus->vtable_properties, &vtable_member_hash_ops);
- if (r < 0)
- return r;
-
- n = bus_node_allocate(bus, path);
- if (!n)
- return -ENOMEM;
-
- LIST_FOREACH(vtables, i, n->vtables) {
- if (i->is_fallback != fallback) {
- r = -EPROTOTYPE;
- goto fail;
- }
-
- if (streq(i->interface, interface)) {
-
- if (i->vtable == vtable) {
- r = -EEXIST;
- goto fail;
- }
-
- existing = i;
- }
- }
-
- s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata);
- if (!s) {
- r = -ENOMEM;
- goto fail;
- }
-
- s->node_vtable.is_fallback = fallback;
- s->node_vtable.vtable = vtable;
- s->node_vtable.find = find;
-
- s->node_vtable.interface = strdup(interface);
- if (!s->node_vtable.interface) {
- r = -ENOMEM;
- goto fail;
- }
-
- for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
-
- switch (v->type) {
-
- case _SD_BUS_VTABLE_METHOD: {
- struct vtable_member *m;
-
- if (!member_name_is_valid(v->x.method.member) ||
- !signature_is_valid(strempty(v->x.method.signature), false) ||
- !signature_is_valid(strempty(v->x.method.result), false) ||
- !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) ||
- v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) {
- r = -EINVAL;
- goto fail;
- }
-
- m = new0(struct vtable_member, 1);
- if (!m) {
- r = -ENOMEM;
- goto fail;
- }
-
- m->parent = &s->node_vtable;
- m->path = n->path;
- m->interface = s->node_vtable.interface;
- m->member = v->x.method.member;
- m->vtable = v;
-
- r = hashmap_put(bus->vtable_methods, m, m);
- if (r < 0) {
- free(m);
- goto fail;
- }
-
- break;
- }
-
- case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
-
- if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) {
- r = -EINVAL;
- goto fail;
- }
-
- if (v->flags & SD_BUS_VTABLE_PROPERTY_CONST) {
- r = -EINVAL;
- goto fail;
- }
-
- /* Fall through */
-
- case _SD_BUS_VTABLE_PROPERTY: {
- struct vtable_member *m;
-
- if (!member_name_is_valid(v->x.property.member) ||
- !signature_is_single(v->x.property.signature, false) ||
- !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) ||
- v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY ||
- (!!(v->flags & SD_BUS_VTABLE_PROPERTY_CONST) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) > 1 ||
- (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) {
- r = -EINVAL;
- goto fail;
- }
-
- m = new0(struct vtable_member, 1);
- if (!m) {
- r = -ENOMEM;
- goto fail;
- }
-
- m->parent = &s->node_vtable;
- m->path = n->path;
- m->interface = s->node_vtable.interface;
- m->member = v->x.property.member;
- m->vtable = v;
-
- r = hashmap_put(bus->vtable_properties, m, m);
- if (r < 0) {
- free(m);
- goto fail;
- }
-
- break;
- }
-
- case _SD_BUS_VTABLE_SIGNAL:
-
- if (!member_name_is_valid(v->x.signal.member) ||
- !signature_is_valid(strempty(v->x.signal.signature), false) ||
- v->flags & SD_BUS_VTABLE_UNPRIVILEGED) {
- r = -EINVAL;
- goto fail;
- }
-
- break;
-
- default:
- r = -EINVAL;
- goto fail;
- }
- }
-
- s->node_vtable.node = n;
- LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable);
- bus->nodes_modified = true;
-
- if (slot)
- *slot = s;
-
- return 0;
-
-fail:
- sd_bus_slot_unref(s);
- bus_node_gc(bus, n);
-
- return r;
-}
-
-_public_ int sd_bus_add_object_vtable(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *path,
- const char *interface,
- const sd_bus_vtable *vtable,
- void *userdata) {
-
- return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata);
-}
-
-_public_ int sd_bus_add_fallback_vtable(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *prefix,
- const char *interface,
- const sd_bus_vtable *vtable,
- sd_bus_object_find_t find,
- void *userdata) {
-
- return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata);
-}
-
-_public_ int sd_bus_add_node_enumerator(
- sd_bus *bus,
- sd_bus_slot **slot,
- const char *path,
- sd_bus_node_enumerator_t callback,
- void *userdata) {
-
- sd_bus_slot *s;
- struct node *n;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(callback, -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- n = bus_node_allocate(bus, path);
- if (!n)
- return -ENOMEM;
-
- s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata);
- if (!s) {
- r = -ENOMEM;
- goto fail;
- }
-
- s->node_enumerator.callback = callback;
-
- s->node_enumerator.node = n;
- LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator);
- bus->nodes_modified = true;
-
- if (slot)
- *slot = s;
-
- return 0;
-
-fail:
- sd_bus_slot_unref(s);
- bus_node_gc(bus, n);
-
- return r;
-}
-
-static int emit_properties_changed_on_interface(
- sd_bus *bus,
- const char *prefix,
- const char *path,
- const char *interface,
- bool require_fallback,
- bool *found_interface,
- char **names) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- bool has_invalidating = false, has_changing = false;
- struct vtable_member key = {};
- struct node_vtable *c;
- struct node *n;
- char **property;
- void *u = NULL;
- int r;
-
- assert(bus);
- assert(prefix);
- assert(path);
- assert(interface);
- assert(found_interface);
-
- n = hashmap_get(bus->nodes, prefix);
- if (!n)
- return 0;
-
- r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(m, "s", interface);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "{sv}");
- if (r < 0)
- return r;
-
- key.path = prefix;
- key.interface = interface;
-
- LIST_FOREACH(vtables, c, n->vtables) {
- if (require_fallback && !c->is_fallback)
- continue;
-
- if (!streq(c->interface, interface))
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, &u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- *found_interface = true;
-
- if (names) {
- /* If the caller specified a list of
- * properties we include exactly those in the
- * PropertiesChanged message */
-
- STRV_FOREACH(property, names) {
- struct vtable_member *v;
-
- assert_return(member_name_is_valid(*property), -EINVAL);
-
- key.member = *property;
- v = hashmap_get(bus->vtable_properties, &key);
- if (!v)
- return -ENOENT;
-
- /* If there are two vtables for the same
- * interface, let's handle this property when
- * we come to that vtable. */
- if (c != v->parent)
- continue;
-
- assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ||
- v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM);
-
- assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM);
-
- if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) {
- has_invalidating = true;
- continue;
- }
-
- has_changing = true;
-
- r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
- } else {
- const sd_bus_vtable *v;
-
- /* If the caller specified no properties list
- * we include all properties that are marked
- * as changing in the message. */
-
- for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
- if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
- continue;
-
- if (v->flags & SD_BUS_VTABLE_HIDDEN)
- continue;
-
- if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) {
- has_invalidating = true;
- continue;
- }
-
- if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
- continue;
-
- has_changing = true;
-
- r = vtable_append_one_property(bus, m, m->path, c, v, u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
- }
- }
-
- if (!has_invalidating && !has_changing)
- return 0;
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "s");
- if (r < 0)
- return r;
-
- if (has_invalidating) {
- LIST_FOREACH(vtables, c, n->vtables) {
- if (require_fallback && !c->is_fallback)
- continue;
-
- if (!streq(c->interface, interface))
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, &u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- if (names) {
- STRV_FOREACH(property, names) {
- struct vtable_member *v;
-
- key.member = *property;
- assert_se(v = hashmap_get(bus->vtable_properties, &key));
- assert(c == v->parent);
-
- if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION))
- continue;
-
- r = sd_bus_message_append(m, "s", *property);
- if (r < 0)
- return r;
- }
- } else {
- const sd_bus_vtable *v;
-
- for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
- if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
- continue;
-
- if (v->flags & SD_BUS_VTABLE_HIDDEN)
- continue;
-
- if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION))
- continue;
-
- r = sd_bus_message_append(m, "s", v->x.property.member);
- if (r < 0)
- return r;
- }
- }
- }
- }
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
-
- r = sd_bus_send(bus, m, NULL);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-_public_ int sd_bus_emit_properties_changed_strv(
- sd_bus *bus,
- const char *path,
- const char *interface,
- char **names) {
-
- BUS_DONT_DESTROY(bus);
- bool found_interface = false;
- char *prefix;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(interface_name_is_valid(interface), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- /* A non-NULL but empty names list means nothing needs to be
- generated. A NULL list OTOH indicates that all properties
- that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be
- included in the PropertiesChanged message. */
- if (names && names[0] == NULL)
- return 0;
-
- do {
- bus->nodes_modified = false;
-
- r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- continue;
-
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- break;
- }
-
- } while (bus->nodes_modified);
-
- return found_interface ? 0 : -ENOENT;
-}
-
-_public_ int sd_bus_emit_properties_changed(
- sd_bus *bus,
- const char *path,
- const char *interface,
- const char *name, ...) {
-
- char **names;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(interface_name_is_valid(interface), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- if (!name)
- return 0;
-
- names = strv_from_stdarg_alloca(name);
-
- return sd_bus_emit_properties_changed_strv(bus, path, interface, names);
-}
-
-static int object_added_append_all_prefix(
- sd_bus *bus,
- sd_bus_message *m,
- Set *s,
- const char *prefix,
- const char *path,
- bool require_fallback) {
-
- const char *previous_interface = NULL;
- struct node_vtable *c;
- struct node *n;
- int r;
-
- assert(bus);
- assert(m);
- assert(s);
- assert(prefix);
- assert(path);
-
- n = hashmap_get(bus->nodes, prefix);
- if (!n)
- return 0;
-
- LIST_FOREACH(vtables, c, n->vtables) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- void *u = NULL;
-
- if (require_fallback && !c->is_fallback)
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, &u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- if (!streq_ptr(c->interface, previous_interface)) {
- /* If a child-node already handled this interface, we
- * skip it on any of its parents. The child vtables
- * always fully override any conflicting vtables of
- * any parent node. */
- if (set_get(s, c->interface))
- continue;
-
- r = set_put(s, c->interface);
- if (r < 0)
- return r;
-
- if (previous_interface) {
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- }
-
- r = sd_bus_message_open_container(m, 'e', "sa{sv}");
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "s", c->interface);
- if (r < 0)
- return r;
- r = sd_bus_message_open_container(m, 'a', "{sv}");
- if (r < 0)
- return r;
-
- previous_interface = c->interface;
- }
-
- r = vtable_append_all_properties(bus, m, path, c, u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- if (previous_interface) {
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int object_added_append_all(sd_bus *bus, sd_bus_message *m, const char *path) {
- _cleanup_set_free_ Set *s = NULL;
- char *prefix;
- int r;
-
- assert(bus);
- assert(m);
- assert(path);
-
- /*
- * This appends all interfaces registered on path @path. We first add
- * the builtin interfaces, which are always available and handled by
- * sd-bus. Then, we add all interfaces registered on the exact node,
- * followed by all fallback interfaces registered on any parent prefix.
- *
- * If an interface is registered multiple times on the same node with
- * different vtables, we merge all the properties across all vtables.
- * However, if a child node has the same interface registered as one of
- * its parent nodes has as fallback, we make the child overwrite the
- * parent instead of extending it. Therefore, we keep a "Set" of all
- * handled interfaces during parent traversal, so we skip interfaces on
- * a parent that were overwritten by a child.
- */
-
- s = set_new(&string_hash_ops);
- if (!s)
- return -ENOMEM;
-
- r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Peer", 0);
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Introspectable", 0);
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Properties", 0);
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.ObjectManager", 0);
- if (r < 0)
- return r;
-
- r = object_added_append_all_prefix(bus, m, s, path, path, false);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = object_added_append_all_prefix(bus, m, s, prefix, path, true);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 0;
-}
-
-int sd_bus_emit_object_added(sd_bus *bus, const char *path) {
- BUS_DONT_DESTROY(bus);
-
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- /*
- * This emits an InterfacesAdded signal on the given path, by iterating
- * all registered vtables and fallback vtables on the path. All
- * properties are queried and included in the signal.
- * This call is equivalent to sd_bus_emit_interfaces_added() with an
- * explicit list of registered interfaces. However, unlike
- * interfaces_added(), this call can figure out the list of supported
- * interfaces itself. Furthermore, it properly adds the builtin
- * org.freedesktop.DBus.* interfaces.
- */
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- do {
- bus->nodes_modified = false;
- m = sd_bus_message_unref(m);
-
- r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_basic(m, 'o', path);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
- if (r < 0)
- return r;
-
- r = object_added_append_all(bus, m, path);
- if (r < 0)
- return r;
-
- if (bus->nodes_modified)
- continue;
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
-
- } while (bus->nodes_modified);
-
- return sd_bus_send(bus, m, NULL);
-}
-
-static int object_removed_append_all_prefix(
- sd_bus *bus,
- sd_bus_message *m,
- Set *s,
- const char *prefix,
- const char *path,
- bool require_fallback) {
-
- const char *previous_interface = NULL;
- struct node_vtable *c;
- struct node *n;
- int r;
-
- assert(bus);
- assert(m);
- assert(s);
- assert(prefix);
- assert(path);
-
- n = hashmap_get(bus->nodes, prefix);
- if (!n)
- return 0;
-
- LIST_FOREACH(vtables, c, n->vtables) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- void *u = NULL;
-
- if (require_fallback && !c->is_fallback)
- continue;
- if (streq_ptr(c->interface, previous_interface))
- continue;
-
- /* If a child-node already handled this interface, we
- * skip it on any of its parents. The child vtables
- * always fully override any conflicting vtables of
- * any parent node. */
- if (set_get(s, c->interface))
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, &u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- r = set_put(s, c->interface);
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(m, "s", c->interface);
- if (r < 0)
- return r;
-
- previous_interface = c->interface;
- }
-
- return 0;
-}
-
-static int object_removed_append_all(sd_bus *bus, sd_bus_message *m, const char *path) {
- _cleanup_set_free_ Set *s = NULL;
- char *prefix;
- int r;
-
- assert(bus);
- assert(m);
- assert(path);
-
- /* see sd_bus_emit_object_added() for details */
-
- s = set_new(&string_hash_ops);
- if (!s)
- return -ENOMEM;
-
- r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Peer");
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Introspectable");
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Properties");
- if (r < 0)
- return r;
- r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.ObjectManager");
- if (r < 0)
- return r;
-
- r = object_removed_append_all_prefix(bus, m, s, path, path, false);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = object_removed_append_all_prefix(bus, m, s, prefix, path, true);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return 0;
-}
-
-int sd_bus_emit_object_removed(sd_bus *bus, const char *path) {
- BUS_DONT_DESTROY(bus);
-
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- /*
- * This is like sd_bus_emit_object_added(), but emits an
- * InterfacesRemoved signal on the given path. This only includes any
- * registered interfaces but skips the properties. Note that this will
- * call into the find() callbacks of any registered vtable. Therefore,
- * you must call this function before destroying/unlinking your object.
- * Otherwise, the list of interfaces will be incomplete. However, note
- * that this will *NOT* call into any property callback. Therefore, the
- * object might be in an "destructed" state, as long as we can find it.
- */
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- do {
- bus->nodes_modified = false;
- m = sd_bus_message_unref(m);
-
- r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_basic(m, 'o', path);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "s");
- if (r < 0)
- return r;
-
- r = object_removed_append_all(bus, m, path);
- if (r < 0)
- return r;
-
- if (bus->nodes_modified)
- continue;
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
-
- } while (bus->nodes_modified);
-
- return sd_bus_send(bus, m, NULL);
-}
-
-static int interfaces_added_append_one_prefix(
- sd_bus *bus,
- sd_bus_message *m,
- const char *prefix,
- const char *path,
- const char *interface,
- bool require_fallback) {
-
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- bool found_interface = false;
- struct node_vtable *c;
- struct node *n;
- void *u = NULL;
- int r;
-
- assert(bus);
- assert(m);
- assert(prefix);
- assert(path);
- assert(interface);
-
- n = hashmap_get(bus->nodes, prefix);
- if (!n)
- return 0;
-
- LIST_FOREACH(vtables, c, n->vtables) {
- if (require_fallback && !c->is_fallback)
- continue;
-
- if (!streq(c->interface, interface))
- continue;
-
- r = node_vtable_get_userdata(bus, path, c, &u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- if (r == 0)
- continue;
-
- if (!found_interface) {
- r = sd_bus_message_append_basic(m, 's', interface);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "{sv}");
- if (r < 0)
- return r;
-
- found_interface = true;
- }
-
- r = vtable_append_all_properties(bus, m, path, c, u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- if (found_interface) {
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- }
-
- return found_interface;
-}
-
-static int interfaces_added_append_one(
- sd_bus *bus,
- sd_bus_message *m,
- const char *path,
- const char *interface) {
-
- char *prefix;
- int r;
-
- assert(bus);
- assert(m);
- assert(path);
- assert(interface);
-
- r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- return 0;
-
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true);
- if (r != 0)
- return r;
- if (bus->nodes_modified)
- return 0;
- }
-
- return -ENOENT;
-}
-
-_public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) {
- BUS_DONT_DESTROY(bus);
-
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- char **i;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- if (strv_isempty(interfaces))
- return 0;
-
- do {
- bus->nodes_modified = false;
- m = sd_bus_message_unref(m);
-
- r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_basic(m, 'o', path);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
- if (r < 0)
- return r;
-
- STRV_FOREACH(i, interfaces) {
- assert_return(interface_name_is_valid(*i), -EINVAL);
-
- r = sd_bus_message_open_container(m, 'e', "sa{sv}");
- if (r < 0)
- return r;
-
- r = interfaces_added_append_one(bus, m, path, *i);
- if (r < 0)
- return r;
-
- if (bus->nodes_modified)
- break;
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
- }
-
- if (bus->nodes_modified)
- continue;
-
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
-
- } while (bus->nodes_modified);
-
- return sd_bus_send(bus, m, NULL);
-}
-
-_public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) {
- char **interfaces;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- interfaces = strv_from_stdarg_alloca(interface);
-
- return sd_bus_emit_interfaces_added_strv(bus, path, interfaces);
-}
-
-_public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- if (strv_isempty(interfaces))
- return 0;
-
- r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_basic(m, 'o', path);
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_strv(m, interfaces);
- if (r < 0)
- return r;
-
- return sd_bus_send(bus, m, NULL);
-}
-
-_public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) {
- char **interfaces;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
-
- interfaces = strv_from_stdarg_alloca(interface);
-
- return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces);
-}
-
-_public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) {
- sd_bus_slot *s;
- struct node *n;
- int r;
-
- assert_return(bus, -EINVAL);
- assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(!bus_pid_changed(bus), -ECHILD);
-
- n = bus_node_allocate(bus, path);
- if (!n)
- return -ENOMEM;
-
- s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL);
- if (!s) {
- r = -ENOMEM;
- goto fail;
- }
-
- s->node_object_manager.node = n;
- LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager);
- bus->nodes_modified = true;
-
- if (slot)
- *slot = s;
-
- return 0;
-
-fail:
- sd_bus_slot_unref(s);
- bus_node_gc(bus, n);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff