summaryrefslogtreecommitdiffstats
path: root/ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c
blob: 1e7168364d5f2369df859c161dbae09e288a7162 (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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
/** @file
  Main file for map shell level 2 command.

  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
  (C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR>
  (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellLevel2CommandsLib.h"
#include <Protocol/SimpleFileSystem.h>
#include <Protocol/BlockIo.h>
#include <Library/DevicePathLib.h>
#include <Library/HandleParsingLib.h>
#include <Library/SortLib.h>

/**
  Determine if a string has only numbers and letters.

  This is useful for such things as Map names which can only be letters and numbers.

  @param[in] String       pointer to the string to analyze,
  @param[in] Len          Number of characters to analyze.

  @retval TRUE            String has only numbers and letters
  @retval FALSE           String has at least one other character.
**/
BOOLEAN
IsNumberLetterOnly (
  IN CONST CHAR16  *String,
  IN CONST UINTN   Len
  )
{
  UINTN  Count;

  for (Count = 0; Count < Len && String != NULL && *String != CHAR_NULL; String++, Count++) {
    if (!(((*String >= L'a') && (*String <= L'z')) ||
          ((*String >= L'A') && (*String <= L'Z')) ||
          ((*String >= L'0') && (*String <= L'9')))
        )
    {
      return (FALSE);
    }
  }

  return (TRUE);
}

/**
  Do a search in the Target delimited list.

  @param[in] List         The list to seatch in.
  @param[in] MetaTarget   The item to search for. MetaMatching supported.
  @param[out] FullName    Optional pointer to an allocated buffer containing
                          the match.
  @param[in] Meta         TRUE to use MetaMatching.
  @param[in] SkipTrailingNumbers  TRUE to allow for numbers after the MetaTarget.
  @param[in] Target       The single character that delimits list
                          items (";" normally).
**/
BOOLEAN
SearchList (
  IN CONST CHAR16   *List,
  IN CONST CHAR16   *MetaTarget,
  OUT CHAR16        **FullName OPTIONAL,
  IN CONST BOOLEAN  Meta,
  IN CONST BOOLEAN  SkipTrailingNumbers,
  IN CONST CHAR16   *Target

  )
{
  CHAR16        *TempList;
  CONST CHAR16  *ListWalker;
  BOOLEAN       Result;
  CHAR16        *TempSpot;

  for (ListWalker = List, TempList = NULL
       ; ListWalker != NULL && *ListWalker != CHAR_NULL
       ;
       )
  {
    TempList = StrnCatGrow (&TempList, NULL, ListWalker, 0);
    ASSERT (TempList != NULL);
    TempSpot = StrStr (TempList, Target);
    if (TempSpot != NULL) {
      *TempSpot = CHAR_NULL;
    }

    while (SkipTrailingNumbers && (ShellIsDecimalDigitCharacter (TempList[StrLen (TempList)-1]) || TempList[StrLen (TempList)-1] == L':')) {
      TempList[StrLen (TempList)-1] = CHAR_NULL;
    }

    ListWalker = StrStr (ListWalker, Target);
    while (ListWalker != NULL && *ListWalker == *Target) {
      ListWalker++;
    }

    if (Meta) {
      Result = gUnicodeCollation->MetaiMatch (gUnicodeCollation, (CHAR16 *)TempList, (CHAR16 *)MetaTarget);
    } else {
      Result = (BOOLEAN)(StrCmp (TempList, MetaTarget) == 0);
    }

    if (Result) {
      if (FullName != NULL) {
        *FullName = TempList;
      } else {
        FreePool (TempList);
      }

      return (TRUE);
    }

    FreePool (TempList);
    TempList = NULL;
  }

  return (FALSE);
}

/**
  Determine what type of device is represented and return it's string.  The
  string is in allocated memory and must be callee freed.  The HII is is listed below.
  The actual string cannot be determined.

  @param[in] DevicePath     The device to analyze.

  @retval STR_MAP_MEDIA_UNKNOWN   The media type is unknown.
  @retval STR_MAP_MEDIA_HARDDISK  The media is a hard drive.
  @retval STR_MAP_MEDIA_CDROM     The media is a CD ROM.
  @retval STR_MAP_MEDIA_FLOPPY    The media is a floppy drive.
**/
CHAR16 *
GetDeviceMediaType (
  IN  EFI_DEVICE_PATH_PROTOCOL  *DevicePath
  )
{
  ACPI_HID_DEVICE_PATH  *Acpi;

  //
  //  Parse the device path:
  //  Devicepath sub type                 mediatype
  //    MEDIA_HANRDDRIVE_DP      ->       Hard Disk
  //    MEDIA_CDROM_DP           ->       CD Rom
  //    Acpi.HID = 0X0604        ->       Floppy
  //
  if (NULL == DevicePath) {
    return HiiGetString (gShellLevel2HiiHandle, STRING_TOKEN (STR_MAP_MEDIA_UNKNOWN), NULL);
  }

  for ( ; !IsDevicePathEndType (DevicePath); DevicePath = NextDevicePathNode (DevicePath)) {
    if (DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) {
      switch (DevicePathSubType (DevicePath)) {
        case MEDIA_HARDDRIVE_DP:
          return HiiGetString (gShellLevel2HiiHandle, STRING_TOKEN (STR_MAP_MEDIA_HARDDISK), NULL);
        case MEDIA_CDROM_DP:
          return HiiGetString (gShellLevel2HiiHandle, STRING_TOKEN (STR_MAP_MEDIA_CDROM), NULL);
      }
    } else if (DevicePathType (DevicePath) == ACPI_DEVICE_PATH) {
      Acpi = (ACPI_HID_DEVICE_PATH *)DevicePath;
      if (EISA_ID_TO_NUM (Acpi->HID) == 0x0604) {
        return HiiGetString (gShellLevel2HiiHandle, STRING_TOKEN (STR_MAP_MEDIA_FLOPPY), NULL);
      }
    }
  }

  return HiiGetString (gShellLevel2HiiHandle, STRING_TOKEN (STR_MAP_MEDIA_UNKNOWN), NULL);
}

/**
  Function to detemine if a handle has removable storage.

  @param[in] DevicePath             DevicePath to test.

  @retval TRUE                      The handle has removable storage.
  @retval FALSE                     The handle does not have removable storage.
**/
BOOLEAN
IsRemoveableDevice (
  IN EFI_DEVICE_PATH_PROTOCOL  *DevicePath
  )
{
  if (NULL == DevicePath) {
    return FALSE;
  }

  while (!IsDevicePathEndType (DevicePath)) {
    if (DevicePathType (DevicePath) == MESSAGING_DEVICE_PATH) {
      switch (DevicePathSubType (DevicePath)) {
        case MSG_USB_DP:
        case MSG_SCSI_DP:
          return TRUE;
        default:
          return FALSE;
      }
    }

    DevicePath = NextDevicePathNode (DevicePath);
  }

  return FALSE;
}

/**
  Function to detemine if a something on the map list matches.

  @param[in] MapList          The pointer to the list to test.
  @param[in] Specific         The pointer to a specific name to test for.
  @param[in] TypeString       The pointer to the list of types.
  @param[in] Normal           Always show normal mappings.
  @param[in] Consist          Always show consistent mappings.

  @retval TRUE                The map should be displayed.
  @retval FALSE               The map should not be displayed.
**/
BOOLEAN
MappingListHasType (
  IN CONST CHAR16   *MapList,
  IN CONST CHAR16   *Specific,
  IN CONST CHAR16   *TypeString,
  IN CONST BOOLEAN  Normal,
  IN CONST BOOLEAN  Consist
  )
{
  CHAR16         *NewSpecific;
  RETURN_STATUS  Status;
  UINTN          Length;

  //
  // specific has priority
  //
  if (Specific != NULL) {
    Length = StrLen (Specific);
    //
    // Allocate enough buffer for Specific and potential ":"
    //
    NewSpecific = AllocatePool ((Length + 2) * sizeof (CHAR16));
    if (NewSpecific == NULL) {
      return FALSE;
    }

    StrCpyS (NewSpecific, Length + 2, Specific);
    if (Specific[Length - 1] != L':') {
      Status = StrnCatS (NewSpecific, Length + 2, L":", StrLen (L":"));
      if (EFI_ERROR (Status)) {
        FreePool (NewSpecific);
        return FALSE;
      }
    }

    if (SearchList (MapList, NewSpecific, NULL, TRUE, FALSE, L";")) {
      FreePool (NewSpecific);
      return (TRUE);
    }

    FreePool (NewSpecific);
  }

  if (  Consist
     && (Specific == NULL)
     && (  SearchList (MapList, L"HD*", NULL, TRUE, TRUE, L";")
        || SearchList (MapList, L"CD*", NULL, TRUE, TRUE, L";")
        || SearchList (MapList, L"F*", NULL, TRUE, TRUE, L";")
        || SearchList (MapList, L"FP*", NULL, TRUE, TRUE, L";")))
  {
    return (TRUE);
  }

  if (  Normal
     && (Specific == NULL)
     && (  SearchList (MapList, L"FS", NULL, FALSE, TRUE, L";")
        || SearchList (MapList, L"BLK", NULL, FALSE, TRUE, L";")))
  {
    return (TRUE);
  }

  if ((TypeString != NULL) && SearchList (MapList, TypeString, NULL, TRUE, TRUE, L";")) {
    return (TRUE);
  }

  return (FALSE);
}

/**
  Display a single map line for device Handle if conditions are met.

  @param[in] Verbose                TRUE to display (extra) verbose information.
  @param[in] Consist                TRUE to display consistent mappings.
  @param[in] Normal                 TRUE to display normal (not consist) mappings.
  @param[in] TypeString             pointer to string of filter types.
  @param[in] SFO                    TRUE to display output in Standard Output Format.
  @param[in] Specific               pointer to string for specific map to display.
  @param[in] Handle                 The handle to display from.

  @retval EFI_SUCCESS               The mapping was displayed.
**/
EFI_STATUS
PerformSingleMappingDisplay (
  IN CONST BOOLEAN     Verbose,
  IN CONST BOOLEAN     Consist,
  IN CONST BOOLEAN     Normal,
  IN CONST CHAR16      *TypeString,
  IN CONST BOOLEAN     SFO,
  IN CONST CHAR16      *Specific OPTIONAL,
  IN CONST EFI_HANDLE  Handle
  )
{
  EFI_DEVICE_PATH_PROTOCOL  *DevPath;
  EFI_DEVICE_PATH_PROTOCOL  *DevPathCopy;
  CONST CHAR16              *MapList;
  CHAR16                    *CurrentName;
  CHAR16                    *MediaType;
  CHAR16                    *DevPathString;
  CHAR16                    *TempSpot;
  CHAR16                    *Alias;
  UINTN                     TempLen;
  BOOLEAN                   Removable;
  CONST CHAR16              *TempSpot2;

  Alias       = NULL;
  TempSpot2   = NULL;
  CurrentName = NULL;
  DevPath     = DevicePathFromHandle (Handle);
  DevPathCopy = DevPath;
  MapList     = gEfiShellProtocol->GetMapFromDevicePath (&DevPathCopy);
  if (MapList == NULL) {
    return EFI_NOT_FOUND;
  }

  if (!MappingListHasType (MapList, Specific, TypeString, Normal, Consist)) {
    return EFI_NOT_FOUND;
  }

  if (Normal || !Consist) {
    //
    // need the Normal here since people can use both on command line.  otherwise unused.
    //

    //
    // Allocate a name
    //
    CurrentName = NULL;
    CurrentName = StrnCatGrow (&CurrentName, 0, MapList, 0);
    if (CurrentName == NULL) {
      return (EFI_OUT_OF_RESOURCES);
    }

    //
    // Chop off the other names that become "Alias(s)"
    // leaving just the normal name
    //
    TempSpot = StrStr (CurrentName, L";");
    if (TempSpot != NULL) {
      *TempSpot = CHAR_NULL;
    }
  } else {
    CurrentName = NULL;

    //
    // Skip the first name.  This is the standard name.
    //
    TempSpot = StrStr (MapList, L";");
    if (TempSpot != NULL) {
      TempSpot++;
    }

    SearchList (TempSpot, L"HD*", &CurrentName, TRUE, FALSE, L";");
    if (CurrentName == NULL) {
      SearchList (TempSpot, L"CD*", &CurrentName, TRUE, FALSE, L";");
    }

    if (CurrentName == NULL) {
      SearchList (TempSpot, L"FP*", &CurrentName, TRUE, FALSE, L";");
    }

    if (CurrentName == NULL) {
      SearchList (TempSpot, L"F*", &CurrentName, TRUE, FALSE, L";");
    }

    if (CurrentName == NULL) {
      //
      // We didnt find anything, so just the first one in the list...
      //
      CurrentName = StrnCatGrow (&CurrentName, 0, MapList, 0);
      if (CurrentName == NULL) {
        return (EFI_OUT_OF_RESOURCES);
      }

      TempSpot = StrStr (CurrentName, L";");
      if (TempSpot != NULL) {
        *TempSpot = CHAR_NULL;
      }
    } else {
      Alias = StrnCatGrow (&Alias, 0, MapList, 0);
      if (Alias == NULL) {
        return EFI_OUT_OF_RESOURCES;
      }

      TempSpot = StrStr (Alias, CurrentName);
      if (TempSpot != NULL) {
        TempSpot2 = StrStr (TempSpot, L";");
        if (TempSpot2 != NULL) {
          TempSpot2++; // Move past ";" from CurrentName
          CopyMem (TempSpot, TempSpot2, StrSize (TempSpot2));
        } else {
          *TempSpot = CHAR_NULL;
        }
      }

      if (Alias[StrLen (Alias)-1] == L';') {
        Alias[StrLen (Alias)-1] = CHAR_NULL;
      }
    }
  }

  DevPathString = ConvertDevicePathToText (DevPath, TRUE, FALSE);
  TempLen       = StrLen (CurrentName);
  if (!SFO) {
    ShellPrintHiiEx (
      -1,
      -1,
      NULL,
      STRING_TOKEN (STR_MAP_ENTRY),
      gShellLevel2HiiHandle,
      CurrentName,
      Alias != NULL ? Alias : (TempLen < StrLen (MapList) ? MapList + TempLen+1 : L""),
      DevPathString
      );
    if (Verbose) {
      //
      // also print handle, media type, removable (y/n), and current directory
      //
      MediaType = GetDeviceMediaType (DevPath);
      if (((TypeString != NULL) && (MediaType != NULL) && (StrStr (TypeString, MediaType) != NULL)) || (TypeString == NULL)) {
        Removable = IsRemoveableDevice (DevPath);
        TempSpot2 = ShellGetCurrentDir (CurrentName);
        ShellPrintHiiEx (
          -1,
          -1,
          NULL,
          STRING_TOKEN (STR_MAP_ENTRY_VERBOSE),
          gShellLevel2HiiHandle,
          ConvertHandleToHandleIndex (Handle),
          MediaType,
          Removable ? L"Yes" : L"No",
          TempSpot2
          );
      }

      SHELL_FREE_NON_NULL (MediaType);
    }
  } else {
    ShellPrintHiiEx (
      -1,
      -1,
      NULL,
      STRING_TOKEN (STR_MAP_SFO_MAPPINGS),
      gShellLevel2HiiHandle,
      CurrentName,
      DevPathString,
      Consist ? L"" : (TempLen < StrLen (MapList) ? MapList + TempLen+1 : L"")
      );
  }

  SHELL_FREE_NON_NULL (DevPathString);
  SHELL_FREE_NON_NULL (CurrentName);
  SHELL_FREE_NON_NULL (Alias);
  return EFI_SUCCESS;
}

/**
  Delete Specific from the list of maps for device Handle.

  @param[in] Specific   The name to delete.
  @param[in] Handle     The device to look on.

  @retval EFI_SUCCESS     The delete was successful.
  @retval EFI_NOT_FOUND   Name was not a map on Handle.
**/
EFI_STATUS
PerformSingleMappingDelete (
  IN CONST CHAR16      *Specific,
  IN CONST EFI_HANDLE  Handle
  )
{
  EFI_DEVICE_PATH_PROTOCOL  *DevPath;
  EFI_DEVICE_PATH_PROTOCOL  *DevPathCopy;
  CONST CHAR16              *MapList;
  CHAR16                    *CurrentName;

  DevPath     = DevicePathFromHandle (Handle);
  DevPathCopy = DevPath;
  MapList     = gEfiShellProtocol->GetMapFromDevicePath (&DevPathCopy);
  CurrentName = NULL;

  if (MapList == NULL) {
    return (EFI_NOT_FOUND);
  }

  //
  // if there is a specific and its not on the list...
  //
  if (!SearchList (MapList, Specific, &CurrentName, TRUE, FALSE, L";")) {
    return (EFI_NOT_FOUND);
  }

  return (gEfiShellProtocol->SetMap (NULL, CurrentName));
}

CONST CHAR16  Cd[]   = L"cd*";
CONST CHAR16  Hd[]   = L"hd*";
CONST CHAR16  Fp[]   = L"fp*";
CONST CHAR16  AnyF[] = L"F*";

/**
  Function to display mapping information to the user.

  If Specific is specified then Consist and Normal will be ignored since information will
  be printed for the specific item only.

  @param[in] Verbose                TRUE to display (extra) verbose information.
  @param[in] Consist                TRUE to display consistent mappings.
  @param[in] Normal                 TRUE to display normal (not consist) mappings.
  @param[in] TypeString             Pointer to string of filter types.
  @param[in] SFO                    TRUE to display output in Standard Output Format.
  @param[in] Specific               Pointer to string for specific map to display.
  @param[in] Header                 TRUE to print the header block.

  @retval SHELL_SUCCESS               The display was printed.
  @retval SHELL_INVALID_PARAMETER     One of Consist or Normal must be TRUE if no Specific.

**/
SHELL_STATUS
PerformMappingDisplay (
  IN CONST BOOLEAN  Verbose,
  IN CONST BOOLEAN  Consist,
  IN CONST BOOLEAN  Normal,
  IN CONST CHAR16   *TypeString,
  IN CONST BOOLEAN  SFO,
  IN CONST CHAR16   *Specific OPTIONAL,
  IN CONST BOOLEAN  Header
  )
{
  EFI_STATUS  Status;
  EFI_HANDLE  *HandleBuffer;
  UINTN       BufferSize;
  UINTN       LoopVar;
  CHAR16      *Test;
  BOOLEAN     Found;

  if (!Consist && !Normal && (Specific == NULL) && (TypeString == NULL)) {
    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel2HiiHandle, L"map");
    return (SHELL_INVALID_PARAMETER);
  }

  if (TypeString != NULL) {
    Test = (CHAR16 *)Cd;
    if (StrnCmp (TypeString, Test, StrLen (Test)-1) != 0) {
      Test = (CHAR16 *)Hd;
      if (StrnCmp (TypeString, Test, StrLen (Test)-1) != 0) {
        Test = (CHAR16 *)Fp;
        if (StrnCmp (TypeString, Test, StrLen (Test)-1) != 0) {
          ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel2HiiHandle, L"map", TypeString);
          return (SHELL_INVALID_PARAMETER);
        }
      } else if (Test == NULL) {
        Test = (CHAR16 *)AnyF;
      }
    }
  } else {
    Test = NULL;
  }

  if (Header) {
    //
    // Print the header
    //
    if (!SFO) {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MAP_HEADER), gShellLevel2HiiHandle);
    } else {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_SFO_HEADER), gShellLevel2HiiHandle, L"map");
    }
  }

  BufferSize   = 0;
  HandleBuffer = NULL;

  //
  // Look up all SimpleFileSystems in the platform
  //
  Status = gBS->LocateHandle (
                  ByProtocol,
                  &gEfiSimpleFileSystemProtocolGuid,
                  NULL,
                  &BufferSize,
                  HandleBuffer
                  );
  if (Status == EFI_BUFFER_TOO_SMALL) {
    HandleBuffer = AllocateZeroPool (BufferSize);
    if (HandleBuffer == NULL) {
      return (SHELL_OUT_OF_RESOURCES);
    }

    Status = gBS->LocateHandle (
                    ByProtocol,
                    &gEfiSimpleFileSystemProtocolGuid,
                    NULL,
                    &BufferSize,
                    HandleBuffer
                    );
  }

  //
  // Get the map name(s) for each one.
  //
  for ( LoopVar = 0, Found = FALSE
        ; LoopVar < (BufferSize / sizeof (EFI_HANDLE)) && HandleBuffer != NULL
        ; LoopVar++
        )
  {
    Status = PerformSingleMappingDisplay (
               Verbose,
               Consist,
               Normal,
               Test,
               SFO,
               Specific,
               HandleBuffer[LoopVar]
               );
    if (!EFI_ERROR (Status)) {
      Found = TRUE;
    }
  }

  //
  // Look up all BlockIo in the platform
  //
  Status = gBS->LocateHandle (
                  ByProtocol,
                  &gEfiBlockIoProtocolGuid,
                  NULL,
                  &BufferSize,
                  HandleBuffer
                  );
  if (Status == EFI_BUFFER_TOO_SMALL) {
    SHELL_FREE_NON_NULL (HandleBuffer);
    HandleBuffer = AllocateZeroPool (BufferSize);
    if (HandleBuffer == NULL) {
      return (SHELL_OUT_OF_RESOURCES);
    }

    Status = gBS->LocateHandle (
                    ByProtocol,
                    &gEfiBlockIoProtocolGuid,
                    NULL,
                    &BufferSize,
                    HandleBuffer
                    );
  }

  if (!EFI_ERROR (Status) && (HandleBuffer != NULL)) {
    //
    // Get the map name(s) for each one.
    //
    for ( LoopVar = 0
          ; LoopVar < BufferSize / sizeof (EFI_HANDLE)
          ; LoopVar++
          )
    {
      //
      // Skip any that were already done...
      //
      if (gBS->OpenProtocol (
                 HandleBuffer[LoopVar],
                 &gEfiSimpleFileSystemProtocolGuid,
                 NULL,
                 gImageHandle,
                 NULL,
                 EFI_OPEN_PROTOCOL_TEST_PROTOCOL
                 ) == EFI_SUCCESS)
      {
        continue;
      }

      Status = PerformSingleMappingDisplay (
                 Verbose,
                 Consist,
                 Normal,
                 Test,
                 SFO,
                 Specific,
                 HandleBuffer[LoopVar]
                 );
      if (!EFI_ERROR (Status)) {
        Found = TRUE;
      }
    }

    FreePool (HandleBuffer);
  }

  if (!Found) {
    if (Specific != NULL) {
      ShellPrintHiiEx (gST->ConOut->Mode->CursorColumn, gST->ConOut->Mode->CursorRow-1, NULL, STRING_TOKEN (STR_MAP_NF), gShellLevel2HiiHandle, L"map", Specific);
    } else {
      ShellPrintHiiEx (gST->ConOut->Mode->CursorColumn, gST->ConOut->Mode->CursorRow-1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"map");
    }
  }

  return (SHELL_SUCCESS);
}

/**
  Perform a mapping display and parse for multiple types in the TypeString.

  @param[in] Verbose      TRUE to use verbose output.
  @param[in] Consist      TRUE to display consistent names.
  @param[in] Normal       TRUE to display normal names.
  @param[in] TypeString   An optional comma-delimited list of types.
  @param[in] SFO          TRUE to display in SFO format.  See Spec.
  @param[in] Specific     An optional specific map name to display alone.

  @retval SHELL_INVALID_PARAMETER   A parameter was invalid.
  @retval SHELL_SUCCESS             The display was successful.
  @sa PerformMappingDisplay
**/
SHELL_STATUS
PerformMappingDisplay2 (
  IN CONST BOOLEAN  Verbose,
  IN CONST BOOLEAN  Consist,
  IN CONST BOOLEAN  Normal,
  IN CONST CHAR16   *TypeString,
  IN CONST BOOLEAN  SFO,
  IN CONST CHAR16   *Specific OPTIONAL
  )
{
  CONST CHAR16  *TypeWalker;
  SHELL_STATUS  ShellStatus;
  CHAR16        *Comma;

  if (TypeString == NULL) {
    return (PerformMappingDisplay (Verbose, Consist, Normal, NULL, SFO, Specific, TRUE));
  }

  ShellStatus = SHELL_SUCCESS;
  for (TypeWalker = TypeString; TypeWalker != NULL && *TypeWalker != CHAR_NULL;) {
    Comma = StrStr (TypeWalker, L",");
    if (Comma == NULL) {
      if (ShellStatus == SHELL_SUCCESS) {
        ShellStatus = PerformMappingDisplay (Verbose, Consist, Normal, TypeWalker, SFO, Specific, (BOOLEAN)(TypeWalker == TypeString));
      } else {
        PerformMappingDisplay (Verbose, Consist, Normal, TypeWalker, SFO, Specific, (BOOLEAN)(TypeWalker == TypeString));
      }

      break;
    } else {
      *Comma = CHAR_NULL;
      if (ShellStatus == SHELL_SUCCESS) {
        ShellStatus = PerformMappingDisplay (Verbose, Consist, Normal, TypeWalker, SFO, Specific, (BOOLEAN)(TypeWalker == TypeString));
      } else {
        PerformMappingDisplay (Verbose, Consist, Normal, TypeWalker, SFO, Specific, (BOOLEAN)(TypeWalker == TypeString));
      }

      *Comma     = L',';
      TypeWalker = Comma + 1;
    }
  }

  return (ShellStatus);
}

/**
  Delete a specific map.

  @param[in] Specific  The pointer to the name of the map to delete.

  @retval EFI_INVALID_PARAMETER     Specific was NULL.
  @retval EFI_SUCCESS               The operation was successful.
  @retval EFI_NOT_FOUND             Specific could not be found.
**/
EFI_STATUS
PerformMappingDelete (
  IN CONST CHAR16  *Specific
  )
{
  EFI_STATUS  Status;
  EFI_HANDLE  *HandleBuffer;
  UINTN       BufferSize;
  UINTN       LoopVar;
  BOOLEAN     Deleted;

  if (Specific == NULL) {
    return (EFI_INVALID_PARAMETER);
  }

  BufferSize   = 0;
  HandleBuffer = NULL;
  Deleted      = FALSE;

  //
  // Look up all SimpleFileSystems in the platform
  //
  Status = gBS->LocateHandle (
                  ByProtocol,
                  &gEfiDevicePathProtocolGuid,
                  NULL,
                  &BufferSize,
                  HandleBuffer
                  );
  if (Status == EFI_BUFFER_TOO_SMALL) {
    HandleBuffer = AllocateZeroPool (BufferSize);
    if (HandleBuffer == NULL) {
      return (EFI_OUT_OF_RESOURCES);
    }

    Status = gBS->LocateHandle (
                    ByProtocol,
                    &gEfiDevicePathProtocolGuid,
                    NULL,
                    &BufferSize,
                    HandleBuffer
                    );
  }

  if (EFI_ERROR (Status)) {
    SHELL_FREE_NON_NULL (HandleBuffer);
    return (Status);
  }

  if (HandleBuffer != NULL) {
    //
    // Get the map name(s) for each one.
    //
    for ( LoopVar = 0
          ; LoopVar < BufferSize / sizeof (EFI_HANDLE)
          ; LoopVar++
          )
    {
      if (PerformSingleMappingDelete (Specific, HandleBuffer[LoopVar]) == SHELL_SUCCESS) {
        Deleted = TRUE;
      }
    }
  }

  //
  // Look up all BlockIo in the platform
  //
  Status = gBS->LocateHandle (
                  ByProtocol,
                  &gEfiBlockIoProtocolGuid,
                  NULL,
                  &BufferSize,
                  HandleBuffer
                  );
  if (Status == EFI_BUFFER_TOO_SMALL) {
    FreePool (HandleBuffer);
    HandleBuffer = AllocateZeroPool (BufferSize);
    if (HandleBuffer == NULL) {
      return (EFI_OUT_OF_RESOURCES);
    }

    Status = gBS->LocateHandle (
                    ByProtocol,
                    &gEfiBlockIoProtocolGuid,
                    NULL,
                    &BufferSize,
                    HandleBuffer
                    );
  }

  if (EFI_ERROR (Status)) {
    SHELL_FREE_NON_NULL (HandleBuffer);
    return (Status);
  }

  if (HandleBuffer != NULL) {
    //
    // Get the map name(s) for each one.
    //
    for ( LoopVar = 0
          ; LoopVar < BufferSize / sizeof (EFI_HANDLE)
          ; LoopVar++
          )
    {
      //
      // Skip any that were already done...
      //
      if (gBS->OpenProtocol (
                 HandleBuffer[LoopVar],
                 &gEfiDevicePathProtocolGuid,
                 NULL,
                 gImageHandle,
                 NULL,
                 EFI_OPEN_PROTOCOL_TEST_PROTOCOL
                 ) == EFI_SUCCESS)
      {
        continue;
      }

      if (PerformSingleMappingDelete (Specific, HandleBuffer[LoopVar]) == SHELL_SUCCESS) {
        Deleted = TRUE;
      }
    }
  }

  SHELL_FREE_NON_NULL (HandleBuffer);
  if (!Deleted) {
    return (EFI_NOT_FOUND);
  }

  return (EFI_SUCCESS);
}

/**
  function to add a mapping from mapping.

  This function will get the device path associated with the mapping and call SetMap.

  @param[in] Map         The Map to add a mapping for
  @param[in] SName       The name of the new mapping

  @retval SHELL_SUCCESS             the mapping was added
  @retval SHELL_INVALID_PARAMETER   the device path for Map could not be retrieved.
  @return                           Shell version of a return value from EfiShellProtocol->SetMap

**/
SHELL_STATUS
AddMappingFromMapping (
  IN CONST CHAR16  *Map,
  IN CONST CHAR16  *SName
  )
{
  CONST EFI_DEVICE_PATH_PROTOCOL  *DevPath;
  EFI_STATUS                      Status;
  CHAR16                          *NewSName;
  RETURN_STATUS                   StrRetStatus;

  NewSName = AllocateCopyPool (StrSize (SName) + sizeof (CHAR16), SName);
  if (NewSName == NULL) {
    return (SHELL_OUT_OF_RESOURCES);
  }

  if (NewSName[StrLen (NewSName)-1] != L':') {
    StrRetStatus = StrnCatS (NewSName, (StrSize (SName) + sizeof (CHAR16))/sizeof (CHAR16), L":", StrLen (L":"));
    if (EFI_ERROR (StrRetStatus)) {
      FreePool (NewSName);
      return ((SHELL_STATUS)(StrRetStatus & (~MAX_BIT)));
    }
  }

  if (!IsNumberLetterOnly (NewSName, StrLen (NewSName)-1)) {
    FreePool (NewSName);
    return (SHELL_INVALID_PARAMETER);
  }

  DevPath = gEfiShellProtocol->GetDevicePathFromMap (Map);
  if (DevPath == NULL) {
    FreePool (NewSName);
    return (SHELL_INVALID_PARAMETER);
  }

  Status = gEfiShellProtocol->SetMap (DevPath, NewSName);
  FreePool (NewSName);
  if (EFI_ERROR (Status)) {
    return (SHELL_DEVICE_ERROR);
  }

  return (SHELL_SUCCESS);
}

/**
  function to add a mapping from an EFI_HANDLE.

  This function will get the device path associated with the Handle and call SetMap.

  @param[in] Handle       The handle to add a mapping for
  @param[in] SName        The name of the new mapping

  @retval SHELL_SUCCESS           the mapping was added
  @retval SHELL_INVALID_PARAMETER SName was not valid for a map name.
  @return                         Shell version of a return value from either
                                  gBS->OpenProtocol or EfiShellProtocol->SetMap

**/
SHELL_STATUS
AddMappingFromHandle (
  IN CONST EFI_HANDLE  Handle,
  IN CONST CHAR16      *SName
  )
{
  EFI_DEVICE_PATH_PROTOCOL  *DevPath;
  EFI_STATUS                Status;
  CHAR16                    *NewSName;
  RETURN_STATUS             StrRetStatus;

  NewSName = AllocateCopyPool (StrSize (SName) + sizeof (CHAR16), SName);
  if (NewSName == NULL) {
    return (SHELL_OUT_OF_RESOURCES);
  }

  if (NewSName[StrLen (NewSName)-1] != L':') {
    StrRetStatus = StrnCatS (NewSName, (StrSize (SName) + sizeof (CHAR16))/sizeof (CHAR16), L":", StrLen (L":"));
    if (EFI_ERROR (StrRetStatus)) {
      FreePool (NewSName);
      return ((SHELL_STATUS)(StrRetStatus & (~MAX_BIT)));
    }
  }

  if (!IsNumberLetterOnly (NewSName, StrLen (NewSName)-1)) {
    FreePool (NewSName);
    return (SHELL_INVALID_PARAMETER);
  }

  Status = gBS->OpenProtocol (
                  Handle,
                  &gEfiDevicePathProtocolGuid,
                  (VOID **)&DevPath,
                  gImageHandle,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    FreePool (NewSName);
    return (SHELL_DEVICE_ERROR);
  }

  Status = gEfiShellProtocol->SetMap (DevPath, NewSName);
  FreePool (NewSName);
  if (EFI_ERROR (Status)) {
    return (SHELL_DEVICE_ERROR);
  }

  return (SHELL_SUCCESS);
}

STATIC CONST SHELL_PARAM_ITEM  MapParamList[] = {
  { L"-d",   TypeValue },
  { L"-r",   TypeFlag  },
  { L"-v",   TypeFlag  },
  { L"-c",   TypeFlag  },
  { L"-f",   TypeFlag  },
  { L"-u",   TypeFlag  },
  { L"-t",   TypeValue },
  { L"-sfo", TypeValue },
  { NULL,    TypeMax   }
};

/**
  The routine issues dummy read for every physical block device to cause
  the BlockIo re-installed if media change happened.
**/
VOID
ProbeForMediaChange (
  VOID
  )
{
  EFI_STATUS             Status;
  UINTN                  HandleCount;
  EFI_HANDLE             *Handles;
  EFI_BLOCK_IO_PROTOCOL  *BlockIo;
  UINTN                  Index;

  gBS->LocateHandleBuffer (
         ByProtocol,
         &gEfiBlockIoProtocolGuid,
         NULL,
         &HandleCount,
         &Handles
         );
  //
  // Probe for media change for every physical block io
  //
  for (Index = 0; Index < HandleCount; Index++) {
    Status = gBS->HandleProtocol (
                    Handles[Index],
                    &gEfiBlockIoProtocolGuid,
                    (VOID **)&BlockIo
                    );
    if (!EFI_ERROR (Status)) {
      if (!BlockIo->Media->LogicalPartition) {
        //
        // Per spec:
        //   The function (ReadBlocks) must return EFI_NO_MEDIA or
        //   EFI_MEDIA_CHANGED even if LBA, BufferSize, or Buffer are invalid so the caller can probe
        //   for changes in media state.
        //
        BlockIo->ReadBlocks (
                   BlockIo,
                   BlockIo->Media->MediaId,
                   0,
                   0,
                   NULL
                   );
      }
    }
  }
}

/**
  Function for 'map' 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
ShellCommandRunMap (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS    Status;
  LIST_ENTRY    *Package;
  CHAR16        *ProblemParam;
  CONST CHAR16  *SName;
  CONST CHAR16  *Mapping;
  EFI_HANDLE    MapAsHandle;
  SHELL_STATUS  ShellStatus;
  BOOLEAN       SfoMode;
  BOOLEAN       ConstMode;
  BOOLEAN       NormlMode;
  CONST CHAR16  *Param1;
  CONST CHAR16  *TypeString;
  UINTN         TempStringLength;

  ProblemParam = NULL;
  Mapping      = NULL;
  SName        = NULL;
  ShellStatus  = SHELL_SUCCESS;
  MapAsHandle  = NULL;

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

  Status = CommandInit ();
  ASSERT_EFI_ERROR (Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (MapParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR (Status)) {
    if ((Status == EFI_VOLUME_CORRUPTED) && (ProblemParam != NULL)) {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, L"map", ProblemParam);
      FreePool (ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT (FALSE);
    }
  } else {
    //
    // check for "-?"
    //
    SfoMode   = ShellCommandLineGetFlag (Package, L"-sfo");
    ConstMode = ShellCommandLineGetFlag (Package, L"-c");
    NormlMode = ShellCommandLineGetFlag (Package, L"-f");
    if (ShellCommandLineGetFlag (Package, L"-?")) {
      ASSERT (FALSE);
    } else if (ShellCommandLineGetRawValue (Package, 3) != NULL) {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel2HiiHandle, L"map");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      //
      // Deleting a map name...
      //
      if (ShellCommandLineGetFlag (Package, L"-d")) {
        if (  ShellCommandLineGetFlag (Package, L"-r")
           || ShellCommandLineGetFlag (Package, L"-v")
           || ConstMode
           || NormlMode
           || ShellCommandLineGetFlag (Package, L"-u")
           || ShellCommandLineGetFlag (Package, L"-t")
              )
        {
          ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_CON), gShellLevel2HiiHandle, L"map");
          ShellStatus = SHELL_INVALID_PARAMETER;
        } else {
          SName = ShellCommandLineGetValue (Package, L"-d");
          if (SName != NULL) {
            Status = PerformMappingDelete (SName);
            if (EFI_ERROR (Status)) {
              if (Status == EFI_ACCESS_DENIED) {
                ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_AD), gShellLevel2HiiHandle, L"map");
                ShellStatus = SHELL_ACCESS_DENIED;
              } else if (Status == EFI_NOT_FOUND) {
                ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MAP_NF), gShellLevel2HiiHandle, L"map", SName);
                ShellStatus = SHELL_INVALID_PARAMETER;
              } else {
                ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_UK), gShellLevel2HiiHandle, L"map", Status);
                ShellStatus = SHELL_UNSUPPORTED;
              }
            }
          } else {
            ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel2HiiHandle, L"map");
            ShellStatus = SHELL_INVALID_PARAMETER;
          }
        }
      } else if (  ShellCommandLineGetFlag (Package, L"-r")
                   //               || ShellCommandLineGetFlag(Package, L"-v")
                || ConstMode
                || NormlMode
                || ShellCommandLineGetFlag (Package, L"-u")
                || ShellCommandLineGetFlag (Package, L"-t")
                   )
      {
        ProbeForMediaChange ();
        if ( ShellCommandLineGetFlag (Package, L"-r")) {
          //
          // Do the reset
          //
          Status = ShellCommandCreateInitialMappingsAndPaths ();
          if (EFI_ERROR (Status)) {
            ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_UK), gShellLevel2HiiHandle, L"map", Status);
            ShellStatus = SHELL_UNSUPPORTED;
          }
        }

        if ((ShellStatus == SHELL_SUCCESS) && ShellCommandLineGetFlag (Package, L"-u")) {
          //
          // Do the Update
          //
          Status = ShellCommandUpdateMapping ();
          if (EFI_ERROR (Status)) {
            ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_UK), gShellLevel2HiiHandle, L"map", Status);
            ShellStatus = SHELL_UNSUPPORTED;
          }
        }

        if (ShellStatus == SHELL_SUCCESS) {
          Param1     = ShellCommandLineGetRawValue (Package, 1);
          TypeString = ShellCommandLineGetValue (Package, L"-t");
          if (  !ConstMode
             && !NormlMode
             && (TypeString  == NULL)
                )
          {
            //
            // now do the display...
            //
            ShellStatus = PerformMappingDisplay (
                            ShellCommandLineGetFlag (Package, L"-v"),
                            TRUE,
                            TRUE,
                            NULL,
                            SfoMode,
                            Param1,
                            TRUE
                            );
          } else {
            //
            // now do the display...
            //
            ShellStatus = PerformMappingDisplay2 (
                            ShellCommandLineGetFlag (Package, L"-v"),
                            ConstMode,
                            NormlMode,
                            TypeString,
                            SfoMode,
                            Param1
                            );
          }
        }
      } else {
        //
        // adding or displaying (there were no flags)
        //
        SName   = ShellCommandLineGetRawValue (Package, 1);
        Mapping = ShellCommandLineGetRawValue (Package, 2);
        if (  (SName == NULL)
           && (Mapping == NULL)
              )
        {
          //
          // display only since no flags
          //
          ShellStatus = PerformMappingDisplay (
                          ShellCommandLineGetFlag (Package, L"-v"),
                          TRUE,
                          TRUE,
                          NULL,
                          SfoMode,
                          NULL,
                          TRUE
                          );
        } else if (  (SName == NULL)
                  || (Mapping == NULL)
                     )
        {
          //
          // Display only the one specified
          //
          ShellStatus = PerformMappingDisplay (
                          FALSE,
                          FALSE,
                          FALSE,
                          NULL,
                          SfoMode,
                          SName, // note the variable here...
                          TRUE
                          );
        } else {
          if (ShellIsHexOrDecimalNumber (Mapping, TRUE, FALSE)) {
            MapAsHandle = ConvertHandleIndexToHandle (ShellStrToUintn (Mapping));
          } else {
            MapAsHandle = NULL;
          }

          if ((MapAsHandle == NULL) && (Mapping[StrLen (Mapping)-1] != L':')) {
            ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel2HiiHandle, L"map", Mapping);
            ShellStatus = SHELL_INVALID_PARAMETER;
          } else {
            TempStringLength = StrLen (SName);
            if (!IsNumberLetterOnly (SName, TempStringLength-((SName[TempStringLength-1] == L':') ? 1 : 0))) {
              ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel2HiiHandle, L"map", SName);
              ShellStatus = SHELL_INVALID_PARAMETER;
            }

            if (ShellStatus == SHELL_SUCCESS) {
              if (MapAsHandle != NULL) {
                ShellStatus = AddMappingFromHandle (MapAsHandle, SName);
              } else {
                ShellStatus = AddMappingFromMapping (Mapping, SName);
              }

              if (ShellStatus != SHELL_SUCCESS) {
                switch (ShellStatus) {
                  case SHELL_ACCESS_DENIED:
                    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_AD), gShellLevel2HiiHandle, L"map");
                    break;
                  case SHELL_INVALID_PARAMETER:
                    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel2HiiHandle, L"map", Mapping);
                    break;
                  case SHELL_DEVICE_ERROR:
                    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MAP_NOF), gShellLevel2HiiHandle, L"map", Mapping);
                    break;
                  default:
                    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_UK), gShellLevel2HiiHandle, L"map", ShellStatus|MAX_BIT);
                }
              } else {
                //
                // now do the display...
                //
                ShellStatus = PerformMappingDisplay (
                                FALSE,
                                FALSE,
                                FALSE,
                                NULL,
                                SfoMode,
                                SName,
                                TRUE
                                );
              } // we were successful so do an output
            }
          } // got a valid map target
        } // got 2 variables
      } // we are adding a mapping
    } // got valid parameters
  }

  //
  // free the command line package
  //
  ShellCommandLineFreeVarList (Package);

  return (ShellStatus);
}