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efi_loader: correctly split device path of loaded image 

When the LoadImage() service is called for an image that is already loaded
to memory the file path may be NULL or it will contain both a device path
as well as a media path. We should not assume that there is no media path.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-04-20 19:24:43 +00:00
parent e2e4098e1b
commit 1e15a9cb7f
1 changed files with 2 additions and 10 deletions
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12
lib/efi_loader/efi_boottime.c
View File

@ -1699,19 +1699,11 @@ efi_status_t EFIAPI efi_load_image(bool boot_policy,
&source_size);
if (ret != EFI_SUCCESS)
goto error;
/*
* split file_path which contains both the device and
* file parts:
*/
efi_dp_split_file_path(file_path, &dp, &fp);
} else {
/* In this case, file_path is the "device" path, i.e.
* something like a HARDWARE_DEVICE:MEMORY_MAPPED
*/
dest_buffer = source_buffer;
dp = file_path;
fp = NULL;
}
/* split file_path which contains both the device and file parts */
efi_dp_split_file_path(file_path, &dp, &fp);
ret = efi_setup_loaded_image(dp, fp, image_obj, &info);
if (ret == EFI_SUCCESS)
ret = efi_load_pe(*image_obj, dest_buffer, info);