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efi_loader: close protocols in UnloadImage() 

When UnloadImage() is called all protocols opened by the image have to be
closed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-06-02 20:02:32 +02:00
parent 25e6fb5e93
commit 120ff7ba68
1 changed files with 36 additions and 2 deletions
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38
lib/efi_loader/efi_boottime.c
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@ -2791,12 +2791,46 @@ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
* @image_obj: handle of the loaded image
* @loaded_image_protocol: loaded image protocol
*/
static void efi_delete_image(struct efi_loaded_image_obj *image_obj,
struct efi_loaded_image *loaded_image_protocol)
static efi_status_t efi_delete_image
(struct efi_loaded_image_obj *image_obj,
struct efi_loaded_image *loaded_image_protocol)
{
struct efi_object *efiobj;
efi_status_t r, ret = EFI_SUCCESS;
close_next:
list_for_each_entry(efiobj, &efi_obj_list, link) {
struct efi_handler *protocol;
list_for_each_entry(protocol, &efiobj->protocols, link) {
struct efi_open_protocol_info_item *info;
list_for_each_entry(info, &protocol->open_infos, link) {
if (info->info.agent_handle !=
(efi_handle_t)image_obj)
continue;
r = EFI_CALL(efi_close_protocol
(efiobj, protocol->guid,
info->info.agent_handle,
info->info.controller_handle
));
if (r != EFI_SUCCESS)
ret = r;
/*
* Closing protocols may results in further
* items being deleted. To play it safe loop
* over all elements again.
*/
goto close_next;
}
}
}
efi_free_pages((uintptr_t)loaded_image_protocol->image_base,
efi_size_in_pages(loaded_image_protocol->image_size));
efi_delete_handle(&image_obj->header);
return ret;
}
/**