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2026-02-24MdePkg: Replace include guards with #pragma onceMichael Kubacki1-4/+1
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 <michael.kubacki@microsoft.com>
2021-12-07MdePkg: Apply uncrustify changesMichael Kubacki1-50/+50
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdePkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2019-04-09MdePkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney1-7/+1
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2018-06-28MdePkg: Clean up source filesLiming Gao1-9/+9
1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com>
2017-01-10MdePkg/Include: Add include file to FileHandleLib.hMichael Kinney1-1/+2
FileHandleLib.h uses the data type EFI_FILE_INFO, so this library class should include <Guid/FileInfo.h>. Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-10-08MdePkg: Fix some typing errors in the header filesThomas Huth1-4/+4
Correct the typos in some header files of MdePkg. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
2015-08-26MdePkg: Make the FileHandleGetFileName return the file name in right format.Qiu Shumin1-1/+3
1. If the file is not a directory remove the redundant '\' char in file name string returned from UefiFileHandleLib.FileHandleGetFileName. 2. Update function comments. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18314 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-24MdePkg/Library/UefiFileHandleLib: Make FileHandleReadLine return the right ↵Qiu Shumin1-0/+2
buffer size. 1. '\r' char will not return in buffer so buffer size should exclude the number of '\r' char. 2. When 'Truncate' is TRUE return the truncated string with 'EFI_SUCCESS' status. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18276 6f19259b-4bc3-4df7-8a09-765794883524
2015-06-24MdePkg\Library\UefiFileHandleLib: Make FileHandleWriteLine support both ↵Qiu Shumin1-1/+9
ASCII and UNICODE file. When the file is a UNICODE file (with UNICODE file tag) write UNICODE text. When the file is an ASCII file write ASCII text. If the file size is zero (without the file tag at the beginning) write ASCII text as default. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17701 6f19259b-4bc3-4df7-8a09-765794883524
2015-06-17MdePkg: Refine the comments for FileHandleLib.Qiu Shumin1-10/+7
Make the function comments of FileHandleLib consistent with instance implementation. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17650 6f19259b-4bc3-4df7-8a09-765794883524
2015-06-15MdePkg: Refine the comments for FileHandleIsDirectory.Qiu Shumin1-6/+5
Make the function comments of FileHandleIsDirectory in FileHandleLib consistent with instance implementation. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17630 6f19259b-4bc3-4df7-8a09-765794883524
2015-01-13MdeModulePkg, MdePkg, NetworkPkg, OvmfPkg, PerformancePkg, ShellPkg: Library ↵Daryl McDaniel1-0/+498
Migration. Move libraries from ShellPkg into MdeModulePkg and MdePkg. The following libraries are being migrated out of ShellPkg in order to make their functionality more widely available. • PathLib: Incorporate into MdePkg/Library/BaseLib • FileHandleLib: MdePkg/Library/UefiFileHandleLib • BaseSortLib: MdeModulePkg/Library/BaseSortLib • UefiSortLib: MdeModulePkg/Library/UefiSortLib Diffs showing file changes are in the attached file, LibMigration.patch. A description of the changes follows: • Move ShellPkg/Include/Library/FileHandleLib.h to MdePkg/Include/Library/FileHandleLib.h • Move ShellPkg/Include/Library/SortLib.h to MdeModulePkg/Include/Library/SortLib.h • Move ShellPkg/Library/BaseSortLib to MdeModulePkg/Library/BaseSortLib • Move ShellPkg/Library/UefiSortLib to MdeModulePkg/Library/UefiSortLib • Move ShellPkg/Library/BasePathLib/BasePathLib.c to MdePkg/Library/BaseLib/FilePaths.c • Merge ShellPkg/Include/Library/PathLib.h into MdePkg/Include/Library/BaseLib.h • Delete ShellPkg/Library/BasePathLib; Includes BasePathLib.c and BasePathLib.inf • NetworkPkg/NetworkPkg.dsc • PerformancePkg.dsc • OvmfPkg/OvmfPkgX64.dsc • OvmfPkg/OvmfPkgIa32X64.dsc • OvmfPkg/OvmfPkgIa32.dsc o Update SortLib and FileHandleLib library classes to point to the new library locations. o Remove PathLib library class and make sure that BaseLib is described. • MdeModulePkg/MdeModulePkg.dec o Add SortLib library class • MdePkg/MdePkg.dec o Add FileHandleLib library class o Add PcdUefiFileHandleLibPrintBufferSize PCD • MdePkg/Library/BaseLib/BaseLib.inf o Add FilePaths.c to [Sources] • MdePkg/Include/Library/BaseLib.h o Update file description to include "file path functions" • ShellPkg/ShellPkg.dsc o Change PACKAGE_GUID to { C1014BB7-4092-43D4-984F-0738EB424DBF } o Update PACKAGE_VERSION to 1.0 o Update SortLib and FileHandleLib library classes to point to the new library locations. o Remove PathLib library class and make sure that BaseLib is described. o Remove ShellPkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf from [Components] • ShellPkg/ShellPkg.dec o Update PLATFORM_VERSION to 1.0 o Remove declarations of the FileHandleLib, SortLib, and PathLib Library Classes o Update comment for the PcdShellPrintBufferSize PCD. • ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.inf • ShellPkg/Application/Shell/Shell.inf o Remove PathLib from [LibraryClasses] • ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.h • ShellPkg/Application/Shell/Shell.h o Remove #include <Library/PathLib.h> • ShellPkg/Library/UefiShellLevel1CommandsLib/UefiShellLevel1CommandsLib.inf o Add PathLib to [LibraryClasses] • ShellPkg/Library/UefiShellLevel1CommandsLib/If.c o Remove #include <Library/PathLib.h> • ShellPkg/Application/ShellSortTestApp/ShellSortTestApp.inf o Add MdeModulePkg/MdeModulePkg.dec to [Packages] • MdeModulePkg/Library/BaseSortLib/BaseSortLib.inf • MdeModulePkg/Library/UefiSortLib/UefiSortLib.inf o Replace ShellPkg.dec with MdeModulePkg.dec in [Packages] • MdeModulePkg/Library/UefiSortLib/UefiSortLib.c o Remove #include <ShellBase.h> o Define USL_FREE_NON_NULL() to replace SHELL_FREE_NON_NULL() Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Daryl McDaniel <daryl.mcdaniel@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16601 6f19259b-4bc3-4df7-8a09-765794883524