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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/** @file
Utility routines used by boot maintenance modules.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "BootMaintenanceManager.h"
/**
Function deletes the variable specified by VarName and VarGuid.
@param VarName A Null-terminated Unicode string that is
the name of the vendor's variable.
@param VarGuid A unique identifier for the vendor.
@retval EFI_SUCCESS The variable was found and removed
@retval EFI_UNSUPPORTED The variable store was inaccessible
@retval EFI_NOT_FOUND The variable was not found
**/
EFI_STATUS
EfiLibDeleteVariable (
IN CHAR16 *VarName,
IN EFI_GUID *VarGuid
)
{
return gRT->SetVariable (
VarName,
VarGuid,
0,
0,
NULL
);
}
/**
Function is used to determine the number of device path instances
that exist in a device path.
@param DevicePath A pointer to a device path data structure.
@return This function counts and returns the number of device path instances
in DevicePath.
**/
UINTN
EfiDevicePathInstanceCount (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
UINTN Count;
UINTN Size;
Count = 0;
while (GetNextDevicePathInstance (&DevicePath, &Size) != NULL) {
Count += 1;
}
return Count;
}
/**
Get a string from the Data Hub record based on
a device path.
@param DevPath The device Path.
@return A string located from the Data Hub records based on
the device path.
@retval NULL If failed to get the String from Data Hub.
**/
UINT16 *
EfiLibStrFromDatahub (
IN EFI_DEVICE_PATH_PROTOCOL *DevPath
)
{
return NULL;
}
|
