X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-util.h;h=38d468edada426e53a020281539a6af76ba6c9c8;hp=9b270c82128c13d632f1e0640644e96f1fe34f56;hb=5fd38859b30b95008e483109578c7fef2b5072f3;hpb=0c842e0ac0293ca395724fa3aefcc2e65390c8b7 diff --git a/src/libsystemd-bus/bus-util.h b/src/libsystemd-bus/bus-util.h index 9b270c821..38d468eda 100644 --- a/src/libsystemd-bus/bus-util.h +++ b/src/libsystemd-bus/bus-util.h @@ -27,21 +27,150 @@ #include "time-util.h" #include "util.h" +typedef enum BusTransport { + BUS_TRANSPORT_LOCAL, + BUS_TRANSPORT_REMOTE, + BUS_TRANSPORT_CONTAINER, + _BUS_TRANSPORT_MAX, + _BUS_TRANSPORT_INVALID = -1 +} BusTransport; + +typedef int (*bus_property_set_t) (sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata); + +struct bus_properties_map { + const char *member; + const char *signature; + bus_property_set_t set; + size_t offset; +}; + +int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata); + +int bus_map_all_properties(sd_bus *bus, + const char *destination, + const char *path, + const struct bus_properties_map *map, + void *userdata); + int bus_async_unregister_and_quit(sd_event *e, sd_bus *bus, const char *name); int bus_event_loop_with_idle(sd_event *e, sd_bus *bus, const char *name, usec_t timeout); -int bus_property_get_tristate(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata); + +int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error); + +int bus_check_peercred(sd_bus *c); int bus_verify_polkit(sd_bus *bus, sd_bus_message *m, const char *action, bool interactive, bool *_challenge, sd_bus_error *e); int bus_verify_polkit_async(sd_bus *bus, Hashmap **registry, sd_bus_message *m, const char *action, bool interactive, sd_bus_error *error, sd_bus_message_handler_t callback, void *userdata); void bus_verify_polkit_async_registry_free(sd_bus *bus, Hashmap *registry); -int bus_connect_system(sd_bus **_bus); +int bus_open_system_systemd(sd_bus **_bus); +int bus_open_user_systemd(sd_bus **_bus); + +int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus); +int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus); + +int bus_print_property(const char *name, sd_bus_message *property, bool all); +int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all); + +int bus_property_get_tristate(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error); +int bus_property_get_bool(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error); + +#define bus_property_get_usec ((sd_bus_property_get_t) NULL) +#define bus_property_set_usec ((sd_bus_property_set_t) NULL) + +assert_cc(sizeof(int) == sizeof(int32_t)); +#define bus_property_get_int ((sd_bus_property_get_t) NULL) + +assert_cc(sizeof(unsigned) == sizeof(unsigned)); +#define bus_property_get_unsigned ((sd_bus_property_get_t) NULL) + +/* On 64bit machines we can use the default serializer for size_t and + * friends, otherwise we need to cast this manually */ +#if __SIZEOF_SIZE_T__ == 8 +#define bus_property_get_size ((sd_bus_property_get_t) NULL) +#else +int bus_property_get_size(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error); +#endif + +#if __SIZEOF_LONG__ == 8 +#define bus_property_get_long ((sd_bus_property_get_t) NULL) +#define bus_property_get_ulong ((sd_bus_property_get_t) NULL) +#else +int bus_property_get_long(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error); +int bus_property_get_ulong(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error); +#endif + +/* uid_t and friends on Linux 32 bit. This means we can just use the + * default serializer for 32bit unsigned, for serializing it, and map + * it to NULL here */ +assert_cc(sizeof(uid_t) == sizeof(uint32_t)); +#define bus_property_get_uid ((sd_bus_property_get_t) NULL) + +assert_cc(sizeof(gid_t) == sizeof(uint32_t)); +#define bus_property_get_gid ((sd_bus_property_get_t) NULL) + +assert_cc(sizeof(pid_t) == sizeof(uint32_t)); +#define bus_property_get_pid ((sd_bus_property_get_t) NULL) + +assert_cc(sizeof(mode_t) == sizeof(uint32_t)); +#define bus_property_get_mode ((sd_bus_property_get_t) NULL) + +int bus_log_parse_error(int r); +int bus_log_create_error(int r); + +typedef struct UnitInfo { + const char *id; + const char *description; + const char *load_state; + const char *active_state; + const char *sub_state; + const char *following; + const char *unit_path; + uint32_t job_id; + const char *job_type; + const char *job_path; +} UnitInfo; + +int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u); DEFINE_TRIVIAL_CLEANUP_FUNC(sd_bus*, sd_bus_unref); DEFINE_TRIVIAL_CLEANUP_FUNC(sd_bus_message*, sd_bus_message_unref); #define _cleanup_bus_unref_ _cleanup_(sd_bus_unrefp) -#define _cleanup_bus_error_free_ _cleanup_(sd_bus_error_free) #define _cleanup_bus_message_unref_ _cleanup_(sd_bus_message_unrefp) +#define _cleanup_bus_error_free_ _cleanup_(sd_bus_error_free) + +#define BUS_DEFINE_PROPERTY_GET_ENUM(function, name, type) \ + int function(sd_bus *bus, \ + const char *path, \ + const char *interface, \ + const char *property, \ + sd_bus_message *reply, \ + void *userdata, \ + sd_bus_error *error) { \ + \ + const char *value; \ + type *field = userdata; \ + int r; \ + \ + assert(bus); \ + assert(reply); \ + assert(field); \ + \ + value = strempty(name##_to_string(*field)); \ + \ + r = sd_bus_message_append_basic(reply, 's', value); \ + if (r < 0) \ + return r; \ + \ + return 1; \ + } \ + struct __useless_struct_to_allow_trailing_semicolon__ + +#define BUS_PROPERTY_DUAL_TIMESTAMP(name, offset, flags) \ + SD_BUS_PROPERTY(name, "t", bus_property_get_usec, (offset) + offsetof(struct dual_timestamp, realtime), (flags)), \ + SD_BUS_PROPERTY(name "Monotonic", "t", bus_property_get_usec, (offset) + offsetof(struct dual_timestamp, monotonic), (flags)) + +int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error);