Tianocore/edk2.git/MdePkg/Library/UefiDevicePathLib, branch dependabot/github_actions/actions/setup-python-7

MdePkg/UefiDevicePathLib: Check allocated buffer before use

2026-07-17T09:45:38+00:00

The allocated buffer NewStr should be checked if it's NULL to avoid null pointer dereference. Signed-off-by: Qihang Gao

MdePkg/UefiDevicePathLib: Fix the potential memory leak issue

2026-07-17T09:45:38+00:00

The function DevPathToTextUsbWWID() allocates NewStr when the input SerialNumber lacks a null terminator. However, this allocated memory is never freed after use, resulting in a memory leak. This patch adds the missing FreePool() for NewStr before the function returns, ensuring that the allocated buffer is properly freed and eliminating the potential leak. Signed-off-by: Qihang Gao

MdePkg: Fix Spelling Errors in Comments

2026-05-08T02:15:34+00:00

This fixes all non-breaking spelling errors in MdePkg. Signed-off-by: Oliver Smith-Denny

MdePkg: Replace include guards with #pragma once

2026-02-23T21:01:28+00:00

Replace traditional `#ifndef`/`#define`/`#endif` include guards with `#pragma` once. `#pragma once` is a widely supported preprocessor directive that prevents header files from being included multiple times. It is supported by all toolchains used to build edk2: GCC, Clang/LLVM, and MSVC. Compared to macro-based include guards, `#pragma once`: - Eliminates the risk of macro name collisions or copy/paste errors where two headers inadvertently use the same guard macro. - Eliminate inconsistency in the way include guard macros are named (e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.). - Reduces boilerplate (three lines replaced by one). - Avoids polluting the macro namespace with guard symbols. - Can improve build times as the preprocessor can skip re-opening the file entirely, rather than re-reading it to find the matching `#endif` ("multiple-include optimization"). - Note that some compilers may already optimize traditional include guards, by recognzining the idiomatic pattern. This change is made acknowledging that overall portability of the code will technically be reduced, as `#pragma once` is not part of the C/C++ standards. However, this is considered acceptable given: 1. edk2 already defines a subset of supported compilers in BaseTools/Conf/tools_def.template, all of which have supported `#pragma once` for over two decades. 2. There have been concerns raised to the project about inconsistent include guard naming and potential macro collisions. Approximate compiler support dates: - MSVC: Supported since Visual C++ 4.2 (1996) - GCC: Supported since 3.4 (2004) (http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html) - Clang (LLVM based): Since initial release in 2007 Signed-off-by: Michael Kubacki

MdePkg: Remove DXE_SAL_DRIVER

2025-10-30T10:00:32+00:00

The DXE_SAL_DRIVER module type was introduced to support Itanium (IPF) platforms. Since support for Itanium processors has been dropped, the instances of DXE_SAL_DRIVER have been removed. Ref: [3cb0a311cb7e747d7be5c5076d0fff76ad256d2b] Cc: Sachin Ganesh Signed-off-by: Sathya Ravichandran

MdePkg/Library: Remove MM_STANDALONE LibraryClass in UefiDevicePathLib.inf

2025-08-06T17:43:56+00:00

UefiDevicePathLib.inf consumes Boot Services in MdePkg/Library/UefiDevicePathLib/DevicePathUtilitiesDxeSmm.c - DevicePathFromHandle(). And so cannot be used by MM_STANDALONE drivers. Instead, MM_STANDALONE drivers can use UefiDevicePathLibBase.inf as the DevicePathLib of choice. Cc: Sachin Ganesh Signed-off-by: Gowtham M

MdePkg/Library: Remove UefiDevicePathLibStandaloneMm.inf

2025-08-06T17:43:56+00:00

The file UefiDevicePathLibStandaloneMm.inf was reintroduced in [#3187] to give downstream platforms time to transition to UefiDevicePathLibBase.inf As nearly three years have passed since that change, and downstream consumers have had sufficient time to migrate, this library can now be safely removed. Cc: Sachin Ganesh Signed-off-by: Gowtham M

MdePkg/Library: Remove unused gEfiDevicePathProtocolGuid

2025-04-22T15:42:33+00:00

Remove unused gEfiDevicePathProtocolGuid in Base UefiDevicePathLib since it's not used. Signed-off-by: Jiaxin Wu

MdePkg: UefiDevicePathLib: Add Display Only format for Hard Drive.

2024-12-25T07:11:33+00:00

Ref: UEFI Specification Version 2.1 (Errata D) (released October 2008) Signed-off-by: Huang Yuqi

MdePkg: CodeQL Fixes.

2024-11-01T04:30:39+00:00

Includes changes across the repo for the following CodeQL rules: - cpp/comparison-with-wider-type - cpp/overflow-buffer - cpp/redundant-null-check-param - cpp/uselesstest Co-authored-by: Taylor Beebe Co-authored-by: kenlautner <85201046+kenlautner@users.noreply.github.com> Signed-off-by: Aaron Pop