#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
+#include <pthread.h>
#include "hashmap.h"
#include "prioq.h"
#include "list.h"
#include "util.h"
+#include "refcnt.h"
#include "sd-bus.h"
#include "bus-error.h"
+#include "bus-match.h"
+#include "bus-kernel.h"
struct reply_callback {
- sd_message_handler_t callback;
+ sd_bus_message_handler_t callback;
void *userdata;
usec_t timeout;
uint64_t serial;
};
struct filter_callback {
- sd_message_handler_t callback;
+ sd_bus_message_handler_t callback;
void *userdata;
+ unsigned last_iteration;
+
LIST_FIELDS(struct filter_callback, callbacks);
};
+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);
+
+ bool object_manager;
+};
+
+struct node_callback {
+ struct node *node;
+
+ bool is_fallback;
+ sd_bus_message_handler_t callback;
+ void *userdata;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_callback, callbacks);
+};
+
+struct node_enumerator {
+ struct node *node;
+
+ sd_bus_node_enumerator_t callback;
+ void *userdata;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_enumerator, enumerators);
+};
+
+struct node_vtable {
+ struct node *node;
+
+ char *interface;
+ bool is_fallback;
+ const sd_bus_vtable *vtable;
+ void *userdata;
+ 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;
+};
+
enum bus_state {
+ BUS_UNSET,
BUS_OPENING,
BUS_AUTHENTICATING,
BUS_HELLO,
- BUS_RUNNING
+ BUS_RUNNING,
+ BUS_CLOSED
+};
+
+static inline bool BUS_IS_OPEN(enum bus_state state) {
+ return state > BUS_UNSET && state < BUS_CLOSED;
+}
+
+enum bus_auth {
+ _BUS_AUTH_INVALID,
+ BUS_AUTH_EXTERNAL,
+ BUS_AUTH_ANONYMOUS
};
struct sd_bus {
- unsigned n_ref;
+ /* 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 fd;
+ int input_fd, output_fd;
int message_version;
+
+ bool is_kernel:1;
bool can_fds:1;
- bool sent_hello: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 processing:1;
+ bool match_callbacks_modified:1;
+ bool filter_callbacks_modified:1;
+ bool nodes_modified:1;
+
+ int use_memfd;
void *rbuffer;
size_t rbuffer_size;
char *unique_name;
+ struct bus_match_node match_callbacks;
Prioq *reply_callbacks_prioq;
Hashmap *reply_callbacks;
LIST_HEAD(struct filter_callback, filter_callbacks);
+ Hashmap *nodes;
+
+
+ Hashmap *vtable_methods;
+ Hashmap *vtable_properties;
+
union {
struct sockaddr sa;
struct sockaddr_un un;
} sockaddr;
socklen_t sockaddr_size;
- sd_id128_t peer;
+ char *kernel;
+
+ 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;
- size_t auth_size;
- char *auth_uid;
+ char *auth_buffer;
usec_t auth_timeout;
-};
-static inline void bus_unrefp(sd_bus **b) {
- sd_bus_unref(*b);
-}
+ struct ucred ucred;
+ char label[NAME_MAX];
+
+ int *fds;
+ unsigned n_fds;
-#define _cleanup_bus_unref_ __attribute__((cleanup(bus_unrefp)))
+ char *exec_path;
+ char **exec_argv;
+
+ uint64_t hello_serial;
+ 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 match_cookie;
+
+ sd_event_source *input_io_event_source;
+ sd_event_source *output_io_event_source;
+ sd_event_source *time_event_source;
+ sd_event *event;
+};
#define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
+
+#define BUS_WQUEUE_MAX 128
+#define BUS_RQUEUE_MAX 128
+
+#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);
+bool service_name_is_valid(const char *p);
+bool member_name_is_valid(const char *p);
+bool object_path_is_valid(const char *p);
+char *object_path_startswith(const char *a, const char *b);
+
+bool namespace_complex_pattern(const char *pattern, const char *value);
+bool path_complex_pattern(const char *pattern, const char *value);
+
+bool namespace_simple_pattern(const char *pattern, const char *value);
+bool path_simple_pattern(const char *pattern, const char *value);
+
+int bus_message_type_from_string(const char *s, uint8_t *u);
+const char *bus_message_type_to_string(uint8_t u);
+
+#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);
+
+bool bus_pid_changed(sd_bus *bus);
+
+#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_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus)
~ianmdlvl / elogind.git / blobdiff