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1 | /** @file\r | |
2 | A shell application that triggers capsule update process.\r | |
3 | \r | |
4 | Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <Uefi.h>\r | |
16 | #include <Library/BaseLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/MemoryAllocationLib.h>\r | |
20 | #include <Library/UefiBootServicesTableLib.h>\r | |
21 | #include <Protocol/SimpleFileSystem.h>\r | |
22 | #include <Protocol/ShellParameters.h>\r | |
23 | #include <Protocol/Shell.h>\r | |
24 | #include <Guid/FileInfo.h>\r | |
25 | \r | |
26 | UINTN Argc;\r | |
27 | CHAR16 **Argv;\r | |
28 | EFI_SHELL_PROTOCOL *mShellProtocol = NULL;\r | |
29 | \r | |
30 | /**\r | |
31 | \r | |
32 | This function parse application ARG.\r | |
33 | \r | |
34 | @return Status\r | |
35 | **/\r | |
36 | EFI_STATUS\r | |
37 | GetArg (\r | |
38 | VOID\r | |
39 | )\r | |
40 | {\r | |
41 | EFI_STATUS Status;\r | |
42 | EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters;\r | |
43 | \r | |
44 | Status = gBS->HandleProtocol (\r | |
45 | gImageHandle,\r | |
46 | &gEfiShellParametersProtocolGuid,\r | |
47 | (VOID**)&ShellParameters\r | |
48 | );\r | |
49 | if (EFI_ERROR(Status)) {\r | |
50 | return Status;\r | |
51 | }\r | |
52 | \r | |
53 | Argc = ShellParameters->Argc;\r | |
54 | Argv = ShellParameters->Argv;\r | |
55 | return EFI_SUCCESS;\r | |
56 | }\r | |
57 | \r | |
58 | /**\r | |
59 | Get shell protocol.\r | |
60 | \r | |
61 | @return Pointer to shell protocol.\r | |
62 | **/\r | |
63 | EFI_SHELL_PROTOCOL *\r | |
64 | GetShellProtocol (\r | |
65 | VOID\r | |
66 | )\r | |
67 | {\r | |
68 | EFI_STATUS Status;\r | |
69 | \r | |
70 | if (mShellProtocol == NULL) {\r | |
71 | Status = gBS->LocateProtocol (\r | |
72 | &gEfiShellProtocolGuid,\r | |
73 | NULL,\r | |
74 | (VOID **) &mShellProtocol\r | |
75 | );\r | |
76 | if (EFI_ERROR (Status)) {\r | |
77 | mShellProtocol = NULL;\r | |
78 | }\r | |
79 | }\r | |
80 | \r | |
81 | return mShellProtocol;\r | |
82 | }\r | |
83 | \r | |
84 | /**\r | |
85 | Read a file.\r | |
86 | \r | |
87 | @param[in] FileName The file to be read.\r | |
88 | @param[out] BufferSize The file buffer size\r | |
89 | @param[out] Buffer The file buffer\r | |
90 | \r | |
91 | @retval EFI_SUCCESS Read file successfully\r | |
92 | @retval EFI_NOT_FOUND Shell protocol or file not found\r | |
93 | @retval others Read file failed\r | |
94 | **/\r | |
95 | EFI_STATUS\r | |
96 | ReadFileToBuffer (\r | |
97 | IN CHAR16 *FileName,\r | |
98 | OUT UINTN *BufferSize,\r | |
99 | OUT VOID **Buffer\r | |
100 | )\r | |
101 | {\r | |
102 | EFI_STATUS Status;\r | |
103 | EFI_SHELL_PROTOCOL *ShellProtocol;\r | |
104 | SHELL_FILE_HANDLE Handle;\r | |
105 | UINT64 FileSize;\r | |
106 | UINTN TempBufferSize;\r | |
107 | VOID *TempBuffer;\r | |
108 | \r | |
109 | ShellProtocol = GetShellProtocol();\r | |
110 | if (ShellProtocol == NULL) {\r | |
111 | return EFI_NOT_FOUND;\r | |
112 | }\r | |
113 | \r | |
114 | //\r | |
115 | // Open file by FileName.\r | |
116 | //\r | |
117 | Status = ShellProtocol->OpenFileByName (\r | |
118 | FileName,\r | |
119 | &Handle,\r | |
120 | EFI_FILE_MODE_READ\r | |
121 | );\r | |
122 | if (EFI_ERROR (Status)) {\r | |
123 | return Status;\r | |
124 | }\r | |
125 | \r | |
126 | //\r | |
127 | // Get the file size.\r | |
128 | //\r | |
129 | Status = ShellProtocol->GetFileSize (Handle, &FileSize);\r | |
130 | if (EFI_ERROR (Status)) {\r | |
131 | ShellProtocol->CloseFile (Handle);\r | |
132 | return Status;\r | |
133 | }\r | |
134 | \r | |
135 | TempBufferSize = (UINTN) FileSize;\r | |
136 | TempBuffer = AllocateZeroPool (TempBufferSize);\r | |
137 | if (TempBuffer == NULL) {\r | |
138 | ShellProtocol->CloseFile (Handle);\r | |
139 | return EFI_OUT_OF_RESOURCES;\r | |
140 | }\r | |
141 | \r | |
142 | //\r | |
143 | // Read the file data to the buffer\r | |
144 | //\r | |
145 | Status = ShellProtocol->ReadFile (\r | |
146 | Handle,\r | |
147 | &TempBufferSize,\r | |
148 | TempBuffer\r | |
149 | );\r | |
150 | if (EFI_ERROR (Status)) {\r | |
151 | ShellProtocol->CloseFile (Handle);\r | |
152 | return Status;\r | |
153 | }\r | |
154 | \r | |
155 | ShellProtocol->CloseFile (Handle);\r | |
156 | \r | |
157 | *BufferSize = TempBufferSize;\r | |
158 | *Buffer = TempBuffer;\r | |
159 | return EFI_SUCCESS;\r | |
160 | }\r | |
161 | \r | |
162 | /**\r | |
163 | Write a file.\r | |
164 | \r | |
165 | @param[in] FileName The file to be written.\r | |
166 | @param[in] BufferSize The file buffer size\r | |
167 | @param[in] Buffer The file buffer\r | |
168 | \r | |
169 | @retval EFI_SUCCESS Write file successfully\r | |
170 | @retval EFI_NOT_FOUND Shell protocol not found\r | |
171 | @retval others Write file failed\r | |
172 | **/\r | |
173 | EFI_STATUS\r | |
174 | WriteFileFromBuffer (\r | |
175 | IN CHAR16 *FileName,\r | |
176 | IN UINTN BufferSize,\r | |
177 | IN VOID *Buffer\r | |
178 | )\r | |
179 | {\r | |
180 | EFI_STATUS Status;\r | |
181 | EFI_SHELL_PROTOCOL *ShellProtocol;\r | |
182 | SHELL_FILE_HANDLE Handle;\r | |
183 | EFI_FILE_INFO *FileInfo;\r | |
184 | UINTN TempBufferSize;\r | |
185 | \r | |
186 | ShellProtocol = GetShellProtocol();\r | |
187 | if (ShellProtocol == NULL) {\r | |
188 | return EFI_NOT_FOUND;\r | |
189 | }\r | |
190 | \r | |
191 | //\r | |
192 | // Open file by FileName.\r | |
193 | //\r | |
194 | Status = ShellProtocol->OpenFileByName (\r | |
195 | FileName,\r | |
196 | &Handle,\r | |
197 | EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE\r | |
198 | );\r | |
199 | if (EFI_ERROR (Status)) {\r | |
200 | return Status;\r | |
201 | }\r | |
202 | \r | |
203 | //\r | |
204 | // Empty the file contents.\r | |
205 | //\r | |
206 | FileInfo = ShellProtocol->GetFileInfo (Handle);\r | |
207 | if (FileInfo == NULL) {\r | |
208 | ShellProtocol->CloseFile (Handle);\r | |
209 | return EFI_DEVICE_ERROR;\r | |
210 | }\r | |
211 | \r | |
212 | //\r | |
213 | // If the file size is already 0, then it has been empty.\r | |
214 | //\r | |
215 | if (FileInfo->FileSize != 0) {\r | |
216 | //\r | |
217 | // Set the file size to 0.\r | |
218 | //\r | |
219 | FileInfo->FileSize = 0;\r | |
220 | Status = ShellProtocol->SetFileInfo (Handle, FileInfo);\r | |
221 | if (EFI_ERROR (Status)) {\r | |
222 | FreePool (FileInfo);\r | |
223 | ShellProtocol->CloseFile (Handle);\r | |
224 | return Status;\r | |
225 | }\r | |
226 | }\r | |
227 | FreePool (FileInfo);\r | |
228 | \r | |
229 | //\r | |
230 | // Write the file data from the buffer\r | |
231 | //\r | |
232 | TempBufferSize = BufferSize;\r | |
233 | Status = ShellProtocol->WriteFile (\r | |
234 | Handle,\r | |
235 | &TempBufferSize,\r | |
236 | Buffer\r | |
237 | );\r | |
238 | if (EFI_ERROR (Status)) {\r | |
239 | ShellProtocol->CloseFile (Handle);\r | |
240 | return Status;\r | |
241 | }\r | |
242 | \r | |
243 | ShellProtocol->CloseFile (Handle);\r | |
244 | \r | |
245 | return EFI_SUCCESS;\r | |
246 | }\r | |
247 | \r |