From 89cb6a5dd6d44dc7293845d63ee29fe6b7cd1d09 Mon Sep 17 00:00:00 2001
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Mon, 7 Oct 2019 14:59:39 +0900
Subject: [PATCH] efi_loader: disk: install file system protocol to a whole
disk
Currently, a whole disk without any partitions is not associated
with EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. So even if it houses some
file system, there is a chance that we may not be able to access
it, particularly, when accesses are to be attempted after searching
that protocol against a device handle.
With this patch, EFI_SIMPLE_FILE_SYSTEM_PROTOCOL is installed
to such a disk if part_get_info() shows there is no partition
table installed on it.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Only if no partition table exists, check for a file system on disk level.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
lib/efi_loader/efi_disk.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 861fcaf374..ed7fb3f7d3 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -337,7 +337,9 @@ static efi_status_t efi_disk_add_dev(
diskobj->dp);
if (ret != EFI_SUCCESS)
return ret;
- if (part >= 1 && efi_fs_exists(desc, part)) {
+ /* partitions or whole disk without partitions */
+ if ((part || desc->part_type == PART_TYPE_UNKNOWN) &&
+ efi_fs_exists(desc, part)) {
diskobj->volume = efi_simple_file_system(desc, part,
diskobj->dp);
ret = efi_add_protocol(&diskobj->header,
--
2.39.5