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1/** @file\r
2 This file declares Section Extraction Protocol.\r
3\r
4 This interface provides a means of decoding a set of sections into a linked list of\r
5 leaf sections. This provides for an extensible and flexible file format.\r
6\r
7Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
8This program and the accompanying materials are licensed and made available under\r
9the terms and conditions of the BSD License that accompanies this distribution.\r
10The full text of the license may be found at\r
11http://opensource.org/licenses/bsd-license.php.\r
12\r
13THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
14WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
15\r
16 @par Revision Reference:\r
17 This protocol is defined in Firmware Volume Specification.\r
18 Version 0.9.\r
19\r
20**/\r
21\r
22#ifndef _SECTION_EXTRACTION_PROTOCOL_H_\r
23#define _SECTION_EXTRACTION_PROTOCOL_H_\r
24\r
25//\r
26// Protocol GUID definition\r
27//\r
28#define EFI_SECTION_EXTRACTION_PROTOCOL_GUID \\r
29 { \\r
30 0x448F5DA4, 0x6DD7, 0x4FE1, {0x93, 0x07, 0x69, 0x22, 0x41, 0x92, 0x21, 0x5D } \\r
31 }\r
32\r
33typedef struct _EFI_SECTION_EXTRACTION_PROTOCOL EFI_SECTION_EXTRACTION_PROTOCOL;\r
34\r
35//\r
36// Protocol member functions\r
37//\r
38/**\r
39 Creates and returns a new section stream handle to represent the new section stream.\r
40\r
41 @param This Indicates the EFI_SECTION_EXTRACTION_PROTOCOL instance.\r
42 @param SectionStreamLength The size in bytes of the section stream.\r
43 @param SectionStream A buffer containing the new section stream.\r
44 @param SectionStreamHandle A pointer to a caller-allocated UINTN that,\r
45 on output, contains the new section stream handle.\r
46\r
47 @retval EFI_SUCCESS The SectionStream was successfully processed, and\r
48 the section stream handle was returned.\r
49 @retval EFI_OUT_OF_RESOURCES The system has insufficient resources to\r
50 process the request.\r
51 @retval EFI_INVALID_PARAMETER The section stream may be corrupt or the value\r
52 of SectionStreamLength may be incorrect.\r
53\r
54**/\r
55typedef\r
56EFI_STATUS\r
57(EFIAPI *EFI_OPEN_SECTION_STREAM)(\r
58 IN EFI_SECTION_EXTRACTION_PROTOCOL *This,\r
59 IN UINTN SectionStreamLength,\r
60 IN VOID *SectionStream,\r
61 OUT UINTN *SectionStreamHandle\r
62 );\r
63\r
64/**\r
65 Reads and returns a single section from a section stream.\r
66\r
67 @param This Indicates the EFI_SECTION_EXTRACTION_PROTOCOL instance.\r
68 @param SectionStreamHandle Indicates from which section stream to read.\r
69 @param SectionType The pointer to an EFI_SECTION_TYPE. If SectionType == NULL,\r
70 the contents of the entire section stream are returned\r
71 in Buffer. If SectionType is not NULL, only the\r
72 requested section is returned. EFI_SECTION_ALL\r
73 matches all section types and can be used as a\r
74 wild card to extract all sections in order.\r
75 @param SectionDefinitionGuid The pointer to an EFI_GUID. If SectionType ==\r
76 EFI_SECTION_GUID_DEFINED, SectionDefinitionGuid\r
77 indicates what section GUID to search for. If\r
78 SectionType !=EFI_SECTION_GUID_DEFINED, then\r
79 SectionDefinitionGuid is unused and is ignored.\r
80 @param SectionInstance Indicates which instance of the requested section\r
81 type to return when SectionType is not NULL.\r
82 @param SectionStreamHandle A pointer to a caller-allocated UINTN that, on output,\r
83 contains the new section stream handle.\r
84 @param Buffer Pointer to a pointer to a buffer in which the section\r
85 contents are returned.\r
86 @param BufferSize A pointer to a caller-allocated UINTN.\r
87 @param AuthenticationStatus A pointer to a caller-allocated UINT32 in\r
88 which any meta-data from encapsulation GUID-defined\r
89 sections is returned.\r
90\r
91 @retval EFI_SUCCESS The SectionStream was successfully processed and\r
92 the section contents were returned in Buffer.\r
93 @retval EFI_PROTOCOL_ERROR A GUID-defined section was encountered inthe section\r
94 stream with its EFI_GUIDED_SECTION_PROCESSING_REQUIRED\r
95 bit set, but there was no corresponding GUIDed\r
96 Section Extraction Protocol in the handle database.\r
97 @retval EFI_NOT_FOUND An error was encountered when parsing the SectionStream,\r
98 which indicates that the SectionStream is not\r
99 correctly formatted. Or, the requested section does not exist.\r
100 @retval EFI_OUT_OF_RESOURCES The system has insufficient resources to process\r
101 the request.\r
102 @retval EFI_INVALID_PARAMETER The SectionStreamHandle does not exist.\r
103 @retval EFI_WARN_BUFFER_TOO_SMALL The size of the input buffer is insufficient\r
104 to contain the requested section. The input\r
105 buffer is filled and section contents are truncated.\r
106\r
107**/\r
108typedef\r
109EFI_STATUS\r
110(EFIAPI *EFI_GET_SECTION)(\r
111 IN EFI_SECTION_EXTRACTION_PROTOCOL *This,\r
112 IN UINTN SectionStreamHandle,\r
113 IN EFI_SECTION_TYPE *SectionType,\r
114 IN EFI_GUID *SectionDefinitionGuid,\r
115 IN UINTN SectionInstance,\r
116 IN VOID **Buffer,\r
117 IN OUT UINTN *BufferSize,\r
118 OUT UINT32 *AuthenticationStatus\r
119 );\r
120\r
121/**\r
122 Deletes a section stream handle and returns all associated resources to the system.\r
123\r
124 @param This Indicates the EFI_SECTION_EXTRACTION_PROTOCOL instance.\r
125 @param SectionStreamHandle Indicates the section stream to close.\r
126 @retval EFI_SUCCESS The SectionStream was successfully processed and\r
127 the section stream handle was returned.\r
128 @retval EFI_INVALID_PARAMETER The SectionStreamHandle does not exist.\r
129\r
130**/\r
131typedef\r
132EFI_STATUS\r
133(EFIAPI *EFI_CLOSE_SECTION_STREAM)(\r
134 IN EFI_SECTION_EXTRACTION_PROTOCOL *This,\r
135 IN UINTN SectionStreamHandle\r
136 );\r
137\r
138//\r
139// Protocol definition\r
140//\r
141struct _EFI_SECTION_EXTRACTION_PROTOCOL {\r
142 ///\r
143 /// Takes a bounded stream of sections and returns a section stream handle.\r
144 ///\r
145 EFI_OPEN_SECTION_STREAM OpenSectionStream;\r
146\r
147 ///\r
148 /// Given a section stream handle, retrieves the requested section and\r
149 /// meta-data from the section stream.\r
150 ///\r
151 EFI_GET_SECTION GetSection;\r
152\r
153 ///\r
154 /// Given a section stream handle, closes the section stream.\r
155 ///\r
156 EFI_CLOSE_SECTION_STREAM CloseSectionStream;\r
157};\r
158\r
159extern EFI_GUID gEfiSectionExtractionProtocolGuid;\r
160\r
161#endif\r