summaryrefslogtreecommitdiff
path: root/ShellPkg/Library/UefiShellDriver1CommandsLib/Unload.c
blob: 0d48f9d5d7546e7d14b440b62afd1825b2673202 (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
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/** @file
  Main file for Unload shell Driver1 function.

  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
  This program and the accompanying materials
  are licensed and made available under the terms and conditions of the BSD License
  which accompanies this distribution.  The full text of the license may be found at
  http://opensource.org/licenses/bsd-license.php

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include "UefiShellDriver1CommandsLib.h"

/**
  Function to dump LoadedImage info from TheHandle.

  @param[in] TheHandle              The handle to dump info from.

  @retval EFI_SUCCESS               The info was dumped.
  @retval EFI_INVALID_PARAMETER     The handle did not have LoadedImage
**/
EFI_STATUS
EFIAPI
DumpLoadedImageProtocolInfo (
  IN EFI_HANDLE   TheHandle
  )
{
  CHAR16 *TheString;

  TheString = GetProtocolInformationDump(TheHandle, &gEfiLoadedImageProtocolGuid, TRUE);
  
  ShellPrintEx(-1, -1, L"%s", TheString);

  SHELL_FREE_NON_NULL(TheString);
  
  return (EFI_SUCCESS);
}

STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  {L"-n", TypeFlag},
  {L"-v", TypeFlag},
  {L"-verbose", TypeFlag},
  {NULL, TypeMax}
  };

/**
  Function for 'unload' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunUnload (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS            Status;
  LIST_ENTRY            *Package;
  CHAR16                *ProblemParam;
  SHELL_STATUS          ShellStatus;
  EFI_HANDLE            TheHandle;
  CONST CHAR16          *Param1;
  SHELL_PROMPT_RESPONSE *Resp;
  UINT64                Value;

  ShellStatus         = SHELL_SUCCESS;
  Package             = NULL;
  Resp                = NULL;
  Value               = 0;
  TheHandle           = NULL;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize();
  ASSERT_EFI_ERROR(Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDriver1HiiHandle,L"unload", ProblemParam);  
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT(FALSE);
    }
  } else {
    if (ShellCommandLineGetCount(Package) > 2){
      //
      // error for too many parameters
      //
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDriver1HiiHandle, L"unload");  
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (ShellCommandLineGetCount(Package) < 2) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellDriver1HiiHandle, L"unload");  
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      Param1    = ShellCommandLineGetRawValue(Package, 1);
      if (Param1 != NULL) {
        Status    = ShellConvertStringToUint64(Param1, &Value, TRUE, FALSE);
        TheHandle = ConvertHandleIndexToHandle((UINTN)Value);
      }

      if (EFI_ERROR(Status) || Param1 == NULL || TheHandle == NULL){
        ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_INV_HANDLE), gShellDriver1HiiHandle, L"unload", Param1);  
        ShellStatus = SHELL_INVALID_PARAMETER;
      } else {
        ASSERT(TheHandle != NULL);
        if (ShellCommandLineGetFlag(Package, L"-v") || ShellCommandLineGetFlag(Package, L"-verbose")) {
          DumpLoadedImageProtocolInfo(TheHandle);
        }
        
        if (!ShellCommandLineGetFlag(Package, L"-n")) {
          Status = ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_UNLOAD_CONF), gShellDriver1HiiHandle, (UINTN)TheHandle);
          Status = ShellPromptForResponse(ShellPromptResponseTypeYesNo, NULL, (VOID**)&Resp);
        }
        if (ShellCommandLineGetFlag(Package, L"-n") || (Resp != NULL && *Resp == ShellPromptResponseYes)) {
          Status = gBS->UnloadImage(TheHandle);
          ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_HANDLE_RESULT), gShellDriver1HiiHandle, L"Unload", (UINTN)TheHandle, Status);
        }
        SHELL_FREE_NON_NULL(Resp);
      }
    }
  }
  if (ShellStatus == SHELL_SUCCESS) {
    if (Status == EFI_SECURITY_VIOLATION) {
      ShellStatus = SHELL_SECURITY_VIOLATION;
    } else if (Status == EFI_INVALID_PARAMETER) {
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (EFI_ERROR(Status)) {
      ShellStatus = SHELL_NOT_FOUND;
    }
  }

  if (Package != NULL) {
    ShellCommandLineFreeVarList(Package);
  }

  return (ShellStatus);
}