UEFI boot service LocateHandleBuffer is implemented by calling efi_allocate_handle and efi_locate_handle.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 888207681c..3060c25a2a 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -753,9 +753,32 @@ static efi_status_t EFIAPI efi_locate_handle_buffer( efi_guid_t *protocol, void *search_key, unsigned long *no_handles, efi_handle_t **buffer) { + efi_status_t r; + unsigned long buffer_size = 0; + EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, no_handles, buffer); - return EFI_EXIT(EFI_NOT_FOUND); + + if (!no_handles || !buffer) { + r = EFI_INVALID_PARAMETER; + goto out; + } + *no_handles = 0; + *buffer = NULL; + r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, + *buffer); + if (r != EFI_BUFFER_TOO_SMALL) + goto out; + r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size, + (void **)buffer); + if (r != EFI_SUCCESS) + goto out; + r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, + *buffer); + if (r == EFI_SUCCESS) + *no_handles = buffer_size / sizeof(void *); +out: + return EFI_EXIT(r); }
static struct efi_class_map efi_class_maps[] = {