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https://github.com/tianocore/edk2
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9326c0eb0a
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>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/** @file
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Provides a Secure Boot related data structure definitions.
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Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#pragma once
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#pragma pack (push, 1)
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/*
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Data structure to provide certificates to setup authenticated secure
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boot variables ('db', 'dbx', 'dbt', 'pk', etc.).
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*/
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typedef struct {
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//
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// The size, in number of bytes, of supplied certificate in 'Data' field.
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//
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UINTN DataSize;
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//
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// The pointer to the certificates in DER-encoded format.
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// Note: This certificate data should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *Data;
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} SECURE_BOOT_CERTIFICATE_INFO;
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/*
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Data structure to provide all Secure Boot related certificates.
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*/
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typedef struct {
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//
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// The human readable name for this set of Secure Boot key sets.
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//
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CONST CHAR16 *SecureBootKeyName;
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//
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// The size, in number of bytes, of supplied certificate in 'DbPtr' field.
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//
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UINTN DbSize;
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//
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// The pointer to the DB certificates in signature list format.
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// Note: This DB certificates should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *DbPtr;
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//
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// The size, in number of bytes, of supplied certificate in 'DbxPtr' field.
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//
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UINTN DbxSize;
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//
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// The pointer to the DBX certificates in signature list format.
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// Note: This DBX certificates should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *DbxPtr;
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//
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// The size, in number of bytes, of supplied certificate in 'DbtPtr' field.
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//
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UINTN DbtSize;
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//
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// The pointer to the DBT certificates in signature list format.
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// Note: This DBT certificates should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *DbtPtr;
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//
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// The size, in number of bytes, of supplied certificate in 'KekPtr' field.
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//
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UINTN KekSize;
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//
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// The pointer to the KEK certificates in signature list format.
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// Note: This KEK certificates should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *KekPtr;
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//
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// The size, in number of bytes, of supplied certificate in 'PkPtr' field.
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//
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UINTN PkSize;
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//
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// The pointer to the PK certificates in signature list format.
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// Note: This PK certificates should not contain the EFI_VARIABLE_AUTHENTICATION_2
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// for authenticated variables.
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//
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CONST VOID *PkPtr;
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} SECURE_BOOT_PAYLOAD_INFO;
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#pragma pack (pop)
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