+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#pragma once
-
-/***
- 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 <sys/socket.h>
-#include <pthread.h>
-
-#include "hashmap.h"
-#include "prioq.h"
-#include "list.h"
-#include "util.h"
-#include "refcnt.h"
-#include "socket-util.h"
-
-#include "sd-bus.h"
-#include "bus-error.h"
-#include "bus-match.h"
-#include "bus-kernel.h"
-#include "kdbus.h"
-
-struct reply_callback {
- sd_bus_message_handler_t callback;
- usec_t timeout;
- uint64_t cookie;
- unsigned prioq_idx;
-};
-
-struct filter_callback {
- sd_bus_message_handler_t callback;
-
- unsigned last_iteration;
-
- LIST_FIELDS(struct filter_callback, callbacks);
-};
-
-struct match_callback {
- sd_bus_message_handler_t callback;
-
- uint64_t cookie;
- unsigned last_iteration;
-
- char *match_string;
-
- struct bus_match_node *match_node;
-};
-
-struct node {
- char *path;
- struct node *parent;
- LIST_HEAD(struct node, child);
- LIST_FIELDS(struct node, siblings);
-
- LIST_HEAD(struct node_callback, callbacks);
- LIST_HEAD(struct node_vtable, vtables);
- LIST_HEAD(struct node_enumerator, enumerators);
- LIST_HEAD(struct node_object_manager, object_managers);
-};
-
-struct node_callback {
- struct node *node;
-
- bool is_fallback;
- sd_bus_message_handler_t callback;
-
- unsigned last_iteration;
-
- LIST_FIELDS(struct node_callback, callbacks);
-};
-
-struct node_enumerator {
- struct node *node;
-
- sd_bus_node_enumerator_t callback;
-
- unsigned last_iteration;
-
- LIST_FIELDS(struct node_enumerator, enumerators);
-};
-
-struct node_object_manager {
- struct node *node;
-
- LIST_FIELDS(struct node_object_manager, object_managers);
-};
-
-struct node_vtable {
- struct node *node;
-
- char *interface;
- bool is_fallback;
- const sd_bus_vtable *vtable;
- sd_bus_object_find_t find;
-
- unsigned last_iteration;
-
- LIST_FIELDS(struct node_vtable, vtables);
-};
-
-struct vtable_member {
- const char *path;
- const char *interface;
- const char *member;
- struct node_vtable *parent;
- unsigned last_iteration;
- const sd_bus_vtable *vtable;
-};
-
-typedef enum BusSlotType {
- BUS_REPLY_CALLBACK,
- BUS_FILTER_CALLBACK,
- BUS_MATCH_CALLBACK,
- BUS_NODE_CALLBACK,
- BUS_NODE_ENUMERATOR,
- BUS_NODE_VTABLE,
- BUS_NODE_OBJECT_MANAGER,
- _BUS_SLOT_INVALID = -1,
-} BusSlotType;
-
-struct sd_bus_slot {
- unsigned n_ref;
- sd_bus *bus;
- void *userdata;
- BusSlotType type:5;
- bool floating:1;
- char *description;
-
- LIST_FIELDS(sd_bus_slot, slots);
-
- union {
- struct reply_callback reply_callback;
- struct filter_callback filter_callback;
- struct match_callback match_callback;
- struct node_callback node_callback;
- struct node_enumerator node_enumerator;
- struct node_object_manager node_object_manager;
- struct node_vtable node_vtable;
- };
-};
-
-enum bus_state {
- BUS_UNSET,
- BUS_OPENING,
- BUS_AUTHENTICATING,
- BUS_HELLO,
- BUS_RUNNING,
- BUS_CLOSING,
- BUS_CLOSED
-};
-
-static inline bool BUS_IS_OPEN(enum bus_state state) {
- return state > BUS_UNSET && state < BUS_CLOSING;
-}
-
-enum bus_auth {
- _BUS_AUTH_INVALID,
- BUS_AUTH_EXTERNAL,
- BUS_AUTH_ANONYMOUS
-};
-
-struct sd_bus {
- /* We use atomic ref counting here since sd_bus_message
- objects retain references to their originating sd_bus but
- we want to allow them to be processed in a different
- thread. We won't provide full thread safety, but only the
- bare minimum that makes it possible to use sd_bus and
- sd_bus_message objects independently and on different
- threads as long as each object is used only once at the
- same time. */
- RefCount n_ref;
-
- enum bus_state state;
- int input_fd, output_fd;
- int message_version;
- int message_endian;
-
- bool is_kernel:1;
- bool can_fds:1;
- bool bus_client:1;
- bool ucred_valid:1;
- bool is_server:1;
- bool anonymous_auth:1;
- bool prefer_readv:1;
- bool prefer_writev:1;
- bool match_callbacks_modified:1;
- bool filter_callbacks_modified:1;
- bool nodes_modified:1;
- bool trusted:1;
- bool fake_creds_valid:1;
- bool fake_pids_valid:1;
- bool manual_peer_interface:1;
- bool is_system:1;
- bool is_user:1;
- bool allow_interactive_authorization:1;
-
- int use_memfd;
-
- void *rbuffer;
- size_t rbuffer_size;
-
- sd_bus_message **rqueue;
- unsigned rqueue_size;
- size_t rqueue_allocated;
-
- sd_bus_message **wqueue;
- unsigned wqueue_size;
- size_t windex;
- size_t wqueue_allocated;
-
- uint64_t cookie;
-
- char *unique_name;
- uint64_t unique_id;
-
- struct bus_match_node match_callbacks;
- Prioq *reply_callbacks_prioq;
- OrderedHashmap *reply_callbacks;
- LIST_HEAD(struct filter_callback, filter_callbacks);
-
- Hashmap *nodes;
- Hashmap *vtable_methods;
- Hashmap *vtable_properties;
-
- union sockaddr_union sockaddr;
- socklen_t sockaddr_size;
-
- char *kernel;
- char *machine;
- pid_t nspid;
-
- sd_id128_t server_id;
-
- char *address;
- unsigned address_index;
-
- int last_connect_error;
-
- enum bus_auth auth;
- size_t auth_rbegin;
- struct iovec auth_iovec[3];
- unsigned auth_index;
- char *auth_buffer;
- usec_t auth_timeout;
-
- struct ucred ucred;
- char label[NAME_MAX];
-
- uint64_t creds_mask;
-
- int *fds;
- unsigned n_fds;
-
- char *exec_path;
- char **exec_argv;
-
- unsigned iteration_counter;
-
- void *kdbus_buffer;
-
- /* We do locking around the memfd cache, since we want to
- * allow people to process a sd_bus_message in a different
- * thread then it was generated on and free it there. Since
- * adding something to the memfd cache might happen when a
- * message is released, we hence need to protect this bit with
- * a mutex. */
- pthread_mutex_t memfd_cache_mutex;
- struct memfd_cache memfd_cache[MEMFD_CACHE_MAX];
- unsigned n_memfd_cache;
-
- pid_t original_pid;
-
- uint64_t hello_flags;
- uint64_t attach_flags;
-
- uint64_t match_cookie;
-
- sd_event_source *input_io_event_source;
- sd_event_source *output_io_event_source;
- sd_event_source *time_event_source;
- sd_event_source *quit_event_source;
- sd_event *event;
- int event_priority;
-
- sd_bus_message *current_message;
- sd_bus_slot *current_slot;
- sd_bus_message_handler_t current_handler;
- void *current_userdata;
-
- sd_bus **default_bus_ptr;
- pid_t tid;
-
- struct kdbus_creds fake_creds;
- struct kdbus_pids fake_pids;
- char *fake_label;
-
- char *cgroup_root;
-
- char *description;
-
- size_t bloom_size;
- unsigned bloom_n_hash;
-
- sd_bus_track *track_queue;
-
- LIST_HEAD(sd_bus_slot, slots);
-};
-
-#define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
-
-#define BUS_WQUEUE_MAX 1024
-#define BUS_RQUEUE_MAX 64*1024
-
-#define BUS_MESSAGE_SIZE_MAX (64*1024*1024)
-#define BUS_AUTH_SIZE_MAX (64*1024)
-
-#define BUS_CONTAINER_DEPTH 128
-
-/* Defined by the specification as maximum size of an array in
- * bytes */
-#define BUS_ARRAY_MAX_SIZE 67108864
-
-#define BUS_FDS_MAX 1024
-
-#define BUS_EXEC_ARGV_MAX 256
-
-bool interface_name_is_valid(const char *p) _pure_;
-bool service_name_is_valid(const char *p) _pure_;
-char* service_name_startswith(const char *a, const char *b);
-bool member_name_is_valid(const char *p) _pure_;
-bool object_path_is_valid(const char *p) _pure_;
-char *object_path_startswith(const char *a, const char *b) _pure_;
-
-bool namespace_complex_pattern(const char *pattern, const char *value) _pure_;
-bool path_complex_pattern(const char *pattern, const char *value) _pure_;
-
-bool namespace_simple_pattern(const char *pattern, const char *value) _pure_;
-bool path_simple_pattern(const char *pattern, const char *value) _pure_;
-
-int bus_message_type_from_string(const char *s, uint8_t *u) _pure_;
-const char *bus_message_type_to_string(uint8_t u) _pure_;
-
-#define error_name_is_valid interface_name_is_valid
-
-int bus_ensure_running(sd_bus *bus);
-int bus_start_running(sd_bus *bus);
-int bus_next_address(sd_bus *bus);
-
-int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m);
-
-int bus_rqueue_make_room(sd_bus *bus);
-
-bool bus_pid_changed(sd_bus *bus);
-
-char *bus_address_escape(const char *v);
-
-#define OBJECT_PATH_FOREACH_PREFIX(prefix, path) \
- for (char *_slash = ({ strcpy((prefix), (path)); streq((prefix), "/") ? NULL : strrchr((prefix), '/'); }) ; \
- _slash && !(_slash[(_slash) == (prefix)] = 0); \
- _slash = streq((prefix), "/") ? NULL : strrchr((prefix), '/'))
-
-/* If we are invoking callbacks of a bus object, ensure unreffing the
- * bus from the callback doesn't destroy the object we are working
- * on */
-#define BUS_DONT_DESTROY(bus) \
- _cleanup_bus_unref_ _unused_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus)
-
-int bus_set_address_system(sd_bus *bus);
-int bus_set_address_user(sd_bus *bus);
-int bus_set_address_system_remote(sd_bus *b, const char *host);
-int bus_set_address_system_machine(sd_bus *b, const char *machine);
-
-int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
-
-int bus_get_root_path(sd_bus *bus);
~ianmdlvl / elogind.git / blobdiff