blob: eaffd5b104adb22c031409aff5ee7012d1e73d7d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/** @file
Variable Lock Protocol is related to EDK II-specific implementation of variables
and intended for use as a means to mark a variable read-only after the event
EFI_END_OF_DXE_EVENT_GUID is signaled.
Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __VARIABLE_LOCK_H__
#define __VARIABLE_LOCK_H__
#define EDKII_VARIABLE_LOCK_PROTOCOL_GUID \
{ \
0xcd3d0a05, 0x9e24, 0x437c, { 0xa8, 0x91, 0x1e, 0xe0, 0x53, 0xdb, 0x76, 0x38 } \
}
typedef struct _EDKII_VARIABLE_LOCK_PROTOCOL EDKII_VARIABLE_LOCK_PROTOCOL;
/**
Mark a variable that will become read-only after leaving the DXE phase of execution.
Write request coming from SMM environment through EFI_SMM_VARIABLE_PROTOCOL is allowed.
@param[in] This The EDKII_VARIABLE_LOCK_PROTOCOL instance.
@param[in] VariableName A pointer to the variable name that will be made read-only subsequently.
@param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.
@retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked
as pending to be read-only.
@retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.
Or VariableName is an empty string.
@retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has
already been signaled.
@retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.
**/
typedef
EFI_STATUS
(EFIAPI * EDKII_VARIABLE_LOCK_PROTOCOL_REQUEST_TO_LOCK) (
IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid
);
///
/// Variable Lock Protocol is related to EDK II-specific implementation of variables
/// and intended for use as a means to mark a variable read-only after the event
/// EFI_END_OF_DXE_EVENT_GUID is signaled.
///
struct _EDKII_VARIABLE_LOCK_PROTOCOL {
EDKII_VARIABLE_LOCK_PROTOCOL_REQUEST_TO_LOCK RequestToLock;
};
extern EFI_GUID gEdkiiVariableLockProtocolGuid;
#endif
|
