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source: vbox/trunk/src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellLevel2CommandsLib/Rm.c@ 80924

Last change on this file since 80924 was 80721, checked in by vboxsync, 6 years ago

Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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1/** @file
2 Main file for attrib shell level 2 function.
3
4 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
5 Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
6 SPDX-License-Identifier: BSD-2-Clause-Patent
7
8**/
9
10#include "UefiShellLevel2CommandsLib.h"
11
12STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
13 {L"-q", TypeFlag},
14 {NULL, TypeMax}
15 };
16
17/**
18 Determine if a directory has no files in it.
19
20 @param[in] FileHandle The EFI_HANDLE to the directory.
21
22 @retval TRUE The directory has no files (or directories).
23 @retval FALSE The directory has at least 1 file or directory in it.
24**/
25BOOLEAN
26IsDirectoryEmpty (
27 IN EFI_HANDLE FileHandle
28 )
29{
30 EFI_STATUS Status;
31 EFI_FILE_INFO *FileInfo;
32 BOOLEAN NoFile;
33 BOOLEAN RetVal;
34
35 RetVal = TRUE;
36 NoFile = FALSE;
37 FileInfo = NULL;
38
39 for (Status = FileHandleFindFirstFile(FileHandle, &FileInfo)
40 ; !NoFile && !EFI_ERROR (Status)
41 ; FileHandleFindNextFile(FileHandle, FileInfo, &NoFile)
42 ){
43 if (StrStr(FileInfo->FileName, L".") != FileInfo->FileName
44 &&StrStr(FileInfo->FileName, L"..") != FileInfo->FileName) {
45 RetVal = FALSE;
46 }
47 }
48 return (RetVal);
49}
50
51/**
52 Delete a node and all nodes under it (including sub directories).
53
54 @param[in] Node The node to start deleting with.
55 @param[in] Quiet TRUE to print no messages.
56
57 @retval SHELL_SUCCESS The operation was successful.
58 @retval SHELL_ACCESS_DENIED A file was read only.
59 @retval SHELL_ABORTED The abort message was received.
60 @retval SHELL_DEVICE_ERROR A device error occured reading this Node.
61**/
62SHELL_STATUS
63CascadeDelete(
64 IN EFI_SHELL_FILE_INFO *Node,
65 IN CONST BOOLEAN Quiet
66 )
67{
68 SHELL_STATUS ShellStatus;
69 EFI_SHELL_FILE_INFO *List;
70 EFI_SHELL_FILE_INFO *Node2;
71 EFI_STATUS Status;
72 SHELL_PROMPT_RESPONSE *Resp;
73 CHAR16 *TempName;
74 UINTN NewSize;
75
76 Resp = NULL;
77 ShellStatus = SHELL_SUCCESS;
78 List = NULL;
79 Status = EFI_SUCCESS;
80
81 if ((Node->Info->Attribute & EFI_FILE_READ_ONLY) == EFI_FILE_READ_ONLY) {
82 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DETELE_RO), gShellLevel2HiiHandle, L"rm", Node->FullName);
83 return (SHELL_ACCESS_DENIED);
84 }
85
86 if ((Node->Info->Attribute & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY) {
87 if (!IsDirectoryEmpty(Node->Handle)) {
88 if (!Quiet) {
89 Status = ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_RM_LOG_DELETE_CONF), gShellLevel2HiiHandle, Node->FullName);
90 Status = ShellPromptForResponse(ShellPromptResponseTypeYesNo, NULL, (VOID**)&Resp);
91 ASSERT(Resp != NULL);
92 if (EFI_ERROR(Status) || *Resp != ShellPromptResponseYes) {
93 SHELL_FREE_NON_NULL(Resp);
94 return (SHELL_ABORTED);
95 }
96 SHELL_FREE_NON_NULL(Resp);
97 }
98 //
99 // empty out the directory
100 //
101 Status = gEfiShellProtocol->FindFilesInDir(Node->Handle, &List);
102 if (EFI_ERROR(Status)) {
103 if (List!=NULL) {
104 gEfiShellProtocol->FreeFileList(&List);
105 }
106 return (SHELL_DEVICE_ERROR);
107 }
108 for (Node2 = (EFI_SHELL_FILE_INFO *)GetFirstNode(&List->Link)
109 ; !IsNull(&List->Link, &Node2->Link)
110 ; Node2 = (EFI_SHELL_FILE_INFO *)GetNextNode(&List->Link, &Node2->Link)
111 ){
112 //
113 // skip the directory traversing stuff...
114 //
115 if (StrCmp(Node2->FileName, L".") == 0 || StrCmp(Node2->FileName, L"..") == 0) {
116 continue;
117 }
118 Node2->Status = gEfiShellProtocol->OpenFileByName (Node2->FullName, &Node2->Handle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE);
119 if (EFI_ERROR(Node2->Status) && StrStr(Node2->FileName, L":") == NULL) {
120 //
121 // Update the node filename to have full path with file system identifier
122 //
123 NewSize = StrSize(Node->FullName) + StrSize(Node2->FullName);
124 TempName = AllocateZeroPool(NewSize);
125 if (TempName == NULL) {
126 ShellStatus = SHELL_OUT_OF_RESOURCES;
127 } else {
128 StrCpyS(TempName, NewSize/sizeof(CHAR16), Node->FullName);
129 TempName[StrStr(TempName, L":")+1-TempName] = CHAR_NULL;
130 StrCatS(TempName, NewSize/sizeof(CHAR16), Node2->FullName);
131 FreePool((VOID*)Node2->FullName);
132 Node2->FullName = TempName;
133
134 //
135 // Now try again to open the file
136 //
137 Node2->Status = gEfiShellProtocol->OpenFileByName (Node2->FullName, &Node2->Handle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE);
138 }
139 }
140 if (!EFI_ERROR(Node2->Status)) {
141 ShellStatus = CascadeDelete(Node2, Quiet);
142 } else if (ShellStatus == SHELL_SUCCESS) {
143 ShellStatus = (SHELL_STATUS)(Node2->Status&(~0x80000000));
144 }
145 if (ShellStatus != SHELL_SUCCESS) {
146 if (List!=NULL) {
147 gEfiShellProtocol->FreeFileList(&List);
148 }
149 return (ShellStatus);
150 }
151 }
152 if (List!=NULL) {
153 gEfiShellProtocol->FreeFileList(&List);
154 }
155 }
156 }
157
158 if (!(StrCmp(Node->FileName, L".") == 0 || StrCmp(Node->FileName, L"..") == 0)) {
159 //
160 // now delete the current node...
161 //
162 if (!Quiet) {
163 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE), gShellLevel2HiiHandle, Node->FullName);
164 }
165 Status = gEfiShellProtocol->DeleteFile(Node->Handle);
166 Node->Handle = NULL;
167 }
168
169 //
170 // We cant allow for the warning here! (Dont use EFI_ERROR Macro).
171 //
172 if (Status != EFI_SUCCESS){
173 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR), gShellLevel2HiiHandle, Status);
174 return (SHELL_ACCESS_DENIED);
175 } else {
176 if (!Quiet) {
177 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_COMP), gShellLevel2HiiHandle);
178 }
179 return (SHELL_SUCCESS);
180 }
181}
182
183/**
184 Determines if a Node is a valid delete target. Will prevent deleting the root directory.
185
186 @param[in] List RESERVED. Not used.
187 @param[in] Node The node to analyze.
188 @param[in] Package RESERVED. Not used.
189**/
190BOOLEAN
191IsValidDeleteTarget(
192 IN CONST EFI_SHELL_FILE_INFO *List,
193 IN CONST EFI_SHELL_FILE_INFO *Node,
194 IN CONST LIST_ENTRY *Package
195 )
196{
197 CONST CHAR16 *TempLocation;
198 BOOLEAN RetVal;
199 CHAR16 *SearchString;
200 CHAR16 *Pattern;
201 UINTN Size;
202
203 if (Node == NULL || Node->FullName == NULL) {
204 return (FALSE);
205 }
206
207 TempLocation = StrStr(Node->FullName, L":");
208 if (StrLen(TempLocation) <= 2) {
209 //
210 // Deleting the root directory is invalid.
211 //
212 return (FALSE);
213 }
214
215 TempLocation = ShellGetCurrentDir(NULL);
216 if (TempLocation == NULL) {
217 //
218 // No working directory is specified so whatever is left is ok.
219 //
220 return (TRUE);
221 }
222
223 Pattern = NULL;
224 SearchString = NULL;
225 Size = 0;
226 Pattern = StrnCatGrow(&Pattern, &Size, TempLocation , 0);
227 Pattern = StrnCatGrow(&Pattern, &Size, L"\\" , 0);
228 Size = 0;
229 SearchString = StrnCatGrow(&SearchString, &Size, Node->FullName, 0);
230 if (!EFI_ERROR(ShellIsDirectory(SearchString))) {
231 SearchString = StrnCatGrow(&SearchString, &Size, L"\\", 0);
232 SearchString = StrnCatGrow(&SearchString, &Size, L"*", 0);
233 }
234
235 if (Pattern == NULL || SearchString == NULL) {
236 RetVal = FALSE;
237 } else {
238 RetVal = TRUE;
239 if (gUnicodeCollation->MetaiMatch(gUnicodeCollation, Pattern, SearchString)) {
240 RetVal = FALSE;
241 }
242 }
243
244 SHELL_FREE_NON_NULL(Pattern );
245 SHELL_FREE_NON_NULL(SearchString);
246
247 return (RetVal);
248}
249
250/**
251 Function for 'rm' command.
252
253 @param[in] ImageHandle Handle to the Image (NULL if Internal).
254 @param[in] SystemTable Pointer to the System Table (NULL if Internal).
255**/
256SHELL_STATUS
257EFIAPI
258ShellCommandRunRm (
259 IN EFI_HANDLE ImageHandle,
260 IN EFI_SYSTEM_TABLE *SystemTable
261 )
262{
263 EFI_STATUS Status;
264 LIST_ENTRY *Package;
265 CHAR16 *ProblemParam;
266 CONST CHAR16 *Param;
267 SHELL_STATUS ShellStatus;
268 UINTN ParamCount;
269 EFI_SHELL_FILE_INFO *FileList;
270 EFI_SHELL_FILE_INFO *Node;
271
272 ProblemParam = NULL;
273 ShellStatus = SHELL_SUCCESS;
274 ParamCount = 0;
275 FileList = NULL;
276
277 //
278 // initialize the shell lib (we must be in non-auto-init...)
279 //
280 Status = ShellInitialize();
281 ASSERT_EFI_ERROR(Status);
282
283 //
284 // parse the command line
285 //
286 Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
287 if (EFI_ERROR(Status)) {
288 if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
289 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, L"rm", ProblemParam);
290 FreePool(ProblemParam);
291 ShellStatus = SHELL_INVALID_PARAMETER;
292 } else {
293 ASSERT(FALSE);
294 }
295 } else {
296 //
297 // check for "-?"
298 //
299 if (ShellCommandLineGetFlag(Package, L"-?")) {
300 ASSERT(FALSE);
301 }
302 if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
303 //
304 // we insufficient parameters
305 //
306 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel2HiiHandle, L"rm");
307 ShellStatus = SHELL_INVALID_PARAMETER;
308 } else {
309 //
310 // get a list with each file specified by parameters
311 // if parameter is a directory then add all the files below it to the list
312 //
313 for ( ParamCount = 1, Param = ShellCommandLineGetRawValue(Package, ParamCount)
314 ; Param != NULL
315 ; ParamCount++, Param = ShellCommandLineGetRawValue(Package, ParamCount)
316 ){
317 Status = ShellOpenFileMetaArg((CHAR16*)Param, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ, &FileList);
318 if (EFI_ERROR(Status) || FileList == NULL || IsListEmpty(&FileList->Link)) {
319 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_NF), gShellLevel2HiiHandle, L"rm", (CHAR16*)Param);
320 ShellStatus = SHELL_NOT_FOUND;
321 break;
322 }
323 }
324
325 if (ShellStatus == SHELL_SUCCESS){
326 //
327 // loop through the list and make sure we are not aborting...
328 //
329 for ( Node = (EFI_SHELL_FILE_INFO*)GetFirstNode(&FileList->Link)
330 ; !IsNull(&FileList->Link, &Node->Link) && !ShellGetExecutionBreakFlag()
331 ; Node = (EFI_SHELL_FILE_INFO*)GetNextNode(&FileList->Link, &Node->Link)
332 ){
333 //
334 // skip the directory traversing stuff...
335 //
336 if (StrCmp(Node->FileName, L".") == 0 || StrCmp(Node->FileName, L"..") == 0) {
337 continue;
338 }
339
340 //
341 // do the deleting of nodes
342 //
343 if (EFI_ERROR(Node->Status)){
344 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR2), gShellLevel2HiiHandle, Node->Status);
345 ShellStatus = SHELL_ACCESS_DENIED;
346 break;
347 }
348 if (!IsValidDeleteTarget(FileList, Node, Package)) {
349 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR3), gShellLevel2HiiHandle, Node->FullName);
350 ShellStatus = SHELL_INVALID_PARAMETER;
351 break;
352 }
353
354 ShellStatus = CascadeDelete(Node, ShellCommandLineGetFlag(Package, L"-q"));
355 }
356 }
357 //
358 // Free the fileList
359 //
360 if (FileList != NULL) {
361 Status = ShellCloseFileMetaArg(&FileList);
362 }
363 FileList = NULL;
364 }
365
366 //
367 // free the command line package
368 //
369 ShellCommandLineFreeVarList (Package);
370 }
371
372 return (ShellStatus);
373}
374
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