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<title>Tianocore/edk2.git/ShellPkg/Application/Shell/ShellProtocol.h, branch master</title>
<subtitle>EDK II (mirror)</subtitle>
<id>https://git.radix-linux.su/Tianocore/edk2.git/atom?h=master</id>
<link rel='self' href='https://git.radix-linux.su/Tianocore/edk2.git/atom?h=master'/>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/'/>
<updated>2026-02-23T21:01:28+00:00</updated>
<entry>
<title>ShellPkg: Replace include guards with #pragma once</title>
<updated>2026-02-23T21:01:28+00:00</updated>
<author>
<name>Michael Kubacki</name>
<email>michael.kubacki@microsoft.com</email>
</author>
<published>2026-02-03T19:26:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=8472271daeed6ebb23b6992155b65c029aa42984'/>
<id>urn:sha1:8472271daeed6ebb23b6992155b65c029aa42984</id>
<content type='text'>
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 &lt;michael.kubacki@microsoft.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg: Apply uncrustify changes</title>
<updated>2021-12-07T17:24:28+00:00</updated>
<author>
<name>Michael Kubacki</name>
<email>michael.kubacki@microsoft.com</email>
</author>
<published>2021-12-05T22:54:13+00:00</published>
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<id>urn:sha1:47d20b54f9a65b08aa602a1866c1b59a69088dfc</id>
<content type='text'>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the ShellPkg package

Cc: Andrew Fish &lt;afish@apple.com&gt;
Cc: Leif Lindholm &lt;leif@nuviainc.com&gt;
Cc: Michael D Kinney &lt;michael.d.kinney@intel.com&gt;
Signed-off-by: Michael Kubacki &lt;michael.kubacki@microsoft.com&gt;
Reviewed-by: Ray Ni &lt;ray.ni@intel.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg/Application: Fix various typos</title>
<updated>2020-02-10T22:30:07+00:00</updated>
<author>
<name>Antoine Coeur</name>
<email>coeur@gmx.fr</email>
</author>
<published>2020-02-07T01:08:20+00:00</published>
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<id>urn:sha1:6a5033ca3e8868a176a9671d55ad297bac385b1b</id>
<content type='text'>
Fix various typos in comments and documentation.

Cc: Ray Ni &lt;ray.ni@intel.com&gt;
Cc: Zhichao Gao &lt;zhichao.gao@intel.com&gt;
Signed-off-by: Antoine Coeur &lt;coeur@gmx.fr&gt;
Reviewed-by: Philippe Mathieu-Daude &lt;philmd@redhat.com&gt;
Reviewed-by: Zhichao Gao &lt;zhichao.gao@intel.com&gt;
Signed-off-by: Philippe Mathieu-Daude &lt;philmd@redhat.com&gt;
Message-Id: &lt;20200207010831.9046-68-philmd@redhat.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg: Replace BSD License with BSD+Patent License</title>
<updated>2019-04-09T17:58:25+00:00</updated>
<author>
<name>Michael D Kinney</name>
<email>michael.d.kinney@intel.com</email>
</author>
<published>2019-04-03T23:07:06+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=56ba37463a5ffa44df1c5741184ba0594fadbeba'/>
<id>urn:sha1:56ba37463a5ffa44df1c5741184ba0594fadbeba</id>
<content type='text'>
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 &lt;michael.d.kinney@intel.com&gt;
Reviewed-by: Ray Ni &lt;ray.ni@intel.com&gt;
Reviewed-by: Jaben Carsey &lt;jaben.carsey@intel.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg: Clean up source files</title>
<updated>2018-06-28T03:19:51+00:00</updated>
<author>
<name>Liming Gao</name>
<email>liming.gao@intel.com</email>
</author>
<published>2018-06-27T13:13:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=ba0014b9f8ae1a593f03e744f26008214c2b06a8'/>
<id>urn:sha1:ba0014b9f8ae1a593f03e744f26008214c2b06a8</id>
<content type='text'>
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 &lt;liming.gao@intel.com&gt;
Reviewed-by: Ruiyu Ni &lt;ruiyu.ni@intel.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg/Application: Remove unnecessary EFIAPI</title>
<updated>2016-10-09T02:27:45+00:00</updated>
<author>
<name>Chen A Chen</name>
<email>chen.a.chen@intel.com</email>
</author>
<published>2016-09-29T07:15:15+00:00</published>
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<id>urn:sha1:c20bd8e1e21772bff28a96d428db769e46033e6a</id>
<content type='text'>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen A Chen &lt;chen.a.chen@intel.com&gt;
Reviewed-by: Jaben Carsey &lt;jaben.carsey@intel.com&gt;
Reviewed-by: Ruiyu Ni &lt;Ruiyu.ni@intel.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg/ShellProtocol.c: Handle memory allocation failure</title>
<updated>2016-07-18T02:55:05+00:00</updated>
<author>
<name>Ruiyu Ni</name>
<email>ruiyu.ni@intel.com</email>
</author>
<published>2016-07-14T07:04:38+00:00</published>
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<id>urn:sha1:9168df3dea65f707d1e9c32eba5e18ef6b84e5cd</id>
<content type='text'>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni &lt;ruiyu.ni@intel.com&gt;
Reviewed-by: Jaben Carsey &lt;jaben.carsey@intel.com&gt;
</content>
</entry>
<entry>
<title>ShellPkg: Standardized HP Copyright Message String</title>
<updated>2015-02-04T22:25:01+00:00</updated>
<author>
<name>Tapan Shah</name>
<email>tapandshah@hp.com</email>
</author>
<published>2015-02-04T22:25:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=c011b6c9e2baf57fc0557117e9875ceb3dca55a3'/>
<id>urn:sha1:c011b6c9e2baf57fc0557117e9875ceb3dca55a3</id>
<content type='text'>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah &lt;tapandshah@hp.com&gt;
Reviewed-by: Jaben Carsey &lt;jaben.carsey@intel.com&gt;

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16759 6f19259b-4bc3-4df7-8a09-765794883524
</content>
</entry>
<entry>
<title>Roll back check in r15180 which caused the shell always returns EFI_ABORTED no matter what exit-code is specified for "exit" command.</title>
<updated>2014-09-18T01:58:03+00:00</updated>
<author>
<name>Ruiyu Ni</name>
<email>ruiyu.ni@intel.com</email>
</author>
<published>2014-09-18T01:58:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=a308e0588b3ad87b94611391e9e7a04a8eb05ebf'/>
<id>urn:sha1:a308e0588b3ad87b94611391e9e7a04a8eb05ebf</id>
<content type='text'>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni &lt;ruiyu.ni@intel.com&gt;
Reviewed-by: Carsey Jaben &lt;jaben.carsey@intel.com&gt;

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16127 6f19259b-4bc3-4df7-8a09-765794883524
</content>
</entry>
<entry>
<title>ShellPkg: Fix EFI_SHELL_PROTOCOL to contain new members from UEFI Shell 2.1 spec</title>
<updated>2014-08-18T20:00:08+00:00</updated>
<author>
<name>Chris Phillips</name>
<email>chrisp@hp.com</email>
</author>
<published>2014-08-18T20:00:08+00:00</published>
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<id>urn:sha1:838b31a68cba781fb64ae4deb97fa69b2ed6d4b8</id>
<content type='text'>
- Removes EFI_SHELL_PROTOCOL21
- Adds RegisterGuidName, GetGuidName, GetGuidFromName, and GetEnvEx to EFI_SHELL_PROTOCOL

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chris Phillips &lt;chrisp@hp.com&gt;
Reviewed-by: Jaben Carsey &lt;jaben.carsey@intel.com&gt;

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15818 6f19259b-4bc3-4df7-8a09-765794883524
</content>
</entry>
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