efi_open_protocol and efi_close_protocol have to keep track of
opened protocols.
efi_close_protocol has to mark the appropriate entry as
empty.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
lib/efi_loader/efi_boottime.c | 33 ++++++++++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 294bc1f138..c9aec597a2 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -944,9 +944,40 @@ static efi_status_t EFIAPI efi_close_protocol(void *handle,
void *agent_handle,
void *controller_handle)
{
+ struct efi_handler *handler;
+ size_t i;
+ struct efi_open_protocol_info_entry *open_info;
+ efi_status_t r;
+
EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle,
controller_handle);
- return EFI_EXIT(EFI_NOT_FOUND);
+
+ if (!agent_handle) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ r = efi_search_protocol(handle, protocol, &handler);
+ if (r != EFI_SUCCESS)
+ goto out;
+
+ for (i = 0; i < ARRAY_SIZE(handler->open_info); ++i) {
+ open_info = &handler->open_info[i];
+
+ if (!open_info->open_count)
+ continue;
+
+ if (open_info->agent_handle == agent_handle &&
+ open_info->controller_handle ==
+ controller_handle) {
+ open_info->open_count--;
+ r = EFI_SUCCESS;
+ goto out;
+ }
+ }
+ r = EFI_NOT_FOUND;
+out:
+ return EFI_EXIT(r);
}
static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
--
2.14.1
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