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efi_loader: disk: install file system protocol to a whole disk

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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>
This commit is contained in:
AKASHI Takahiro 2019-10-07 14:59:39 +09:00 committed by Heinrich Schuchardt
parent cab6f06c14
commit 89cb6a5dd6
1 changed files with 3 additions and 1 deletions
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4
lib/efi_loader/efi_disk.c
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@ -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,