Add a list of open protocol infos to each protocol of a handle.
Provide helper functions to access the list items.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- v3 no change v2 no change --- include/efi_loader.h | 15 ++++++++++++++- lib/efi_loader/efi_boottime.c | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+), 1 deletion(-)
diff --git a/include/efi_loader.h b/include/efi_loader.h index 6185055e78..637e6e166d 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -96,15 +96,28 @@ extern const efi_guid_t efi_file_info_guid; extern unsigned int __efi_runtime_start, __efi_runtime_stop; extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
+/* + * When a protocol is opened a open protocol info entry is created. + * These are maintained in a list. + */ +struct efi_open_protocol_info_item { + /* Link to the list of open protocol info entries of a protocol */ + struct list_head link; + struct efi_open_protocol_info_entry info; +}; + /* * When the UEFI payload wants to open a protocol on an object to get its * interface (usually a struct with callback functions), this struct maps the - * protocol GUID to the respective protocol interface */ + * protocol GUID to the respective protocol interface + */ struct efi_handler { /* Link to the list of protocols of a handle */ struct list_head link; const efi_guid_t *guid; void *protocol_interface; + /* Link to the list of open protocol info items */ + struct list_head open_infos; };
/* diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 99eb36c306..f5ec2a8866 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -814,6 +814,40 @@ struct efi_object *efi_search_obj(const void *handle) return NULL; }
+/* + * Create open protocol info entry and add it to a protocol. + * + * @handler handler of a protocol + * @return open protocol info entry + */ +static struct efi_open_protocol_info_entry *efi_create_open_info( + struct efi_handler *handler) +{ + struct efi_open_protocol_info_item *item; + + item = calloc(1, sizeof(struct efi_open_protocol_info_item)); + if (!item) + return NULL; + /* Append the item to the open protocol info list. */ + list_add_tail(&item->link, &handler->open_infos); + + return &item->info; +} + +/* + * Remove an open protocol info entry from a protocol. + * + * @handler handler of a protocol + * @return status code + */ +static efi_status_t efi_delete_open_info( + struct efi_open_protocol_info_item *item) +{ + list_del(&item->link); + free(item); + return EFI_SUCCESS; +} + /* * Install new protocol on a handle. * @@ -840,6 +874,7 @@ efi_status_t efi_add_protocol(const void *handle, const efi_guid_t *protocol, return EFI_OUT_OF_RESOURCES; handler->guid = protocol; handler->protocol_interface = protocol_interface; + INIT_LIST_HEAD(&handler->open_infos); list_add_tail(&handler->link, &efiobj->protocols); return EFI_SUCCESS; }