mirror of
https://github.com/acidanthera/OpenCorePkg.git
synced 2025-12-08 19:25:01 +00:00
66 lines
1.9 KiB
Diff
66 lines
1.9 KiB
Diff
From 6cf9c38ca1065797cd7b608f96a918cf703490bb Mon Sep 17 00:00:00 2001
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From: ocbuild <ocbuild@acidanthera.local>
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Date: Tue, 30 Mar 2021 23:27:57 +0100
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Subject: [PATCH] ShellPkg: Devices shell command support misaligned device
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names found in some Apple firmware
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---
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ShellPkg/Application/Shell/ShellProtocol.c | 26 ++++++++++++++++++++++
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1 file changed, 26 insertions(+)
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diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c
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index 4e639fe..9f5dc80 100644
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--- a/ShellPkg/Application/Shell/ShellProtocol.c
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+++ b/ShellPkg/Application/Shell/ShellProtocol.c
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@@ -573,6 +573,24 @@ EfiShellGetDevicePathFromFilePath(
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return (DevicePathForReturn);
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}
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+STATIC
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+CHAR16 *RealignString16 (
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+ CHAR16 *Source
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+ )
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+{
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+ CHAR16 NextChar;
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+ UINT8 *Walker;
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+
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+ Walker = (UINT8 *) Source;
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+
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+ do {
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+ NextChar = ReadUnaligned16 ((VOID *) Walker);
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+ Walker += sizeof (CHAR16);
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+ } while (NextChar != CHAR_NULL);
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+
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+ return AllocateCopyPool (Walker - (UINT8 *) Source, Source);
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+}
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+
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/**
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Gets the name of the device specified by the device handle.
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@@ -630,6 +648,7 @@ EfiShellGetDeviceName(
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EFI_HANDLE *ParentControllerBuffer;
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UINTN ParentDriverCount;
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EFI_HANDLE *ParentDriverBuffer;
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+ BOOLEAN NeedsRealign;
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if (BestDeviceName == NULL ||
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DeviceHandle == NULL
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@@ -748,7 +767,14 @@ EfiShellGetDeviceName(
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//
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if (DeviceNameToReturn != NULL){
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ASSERT(BestDeviceName != NULL);
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+ NeedsRealign = ((UINTN) DeviceNameToReturn & BIT0) != 0;
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+ if (NeedsRealign) {
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+ DeviceNameToReturn = RealignString16 (DeviceNameToReturn);
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+ }
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StrnCatGrow(BestDeviceName, NULL, DeviceNameToReturn, 0);
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+ if (NeedsRealign) {
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+ FreePool (DeviceNameToReturn);
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+ }
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return (EFI_SUCCESS);
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}
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}
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--
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2.27.0
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