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ShellPkg:?cd \? command fails to go back to the root directory of a file system 

Allows cd command to go back to the root directory when 'cd \' executed in system.

This change prevents last PathRemoveLastItem() call which truncates '\' from 'fs0:\'
in desired root path which is required to set CWD to the root directory.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah <tapandshah@hpe.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
This commit is contained in:
Tapan Shah 2016-10-07 13:59:34 -07:00 committed by Jaben Carsey
parent a12b214ef9
commit a7ea752e59
1 changed files with 11 additions and 1 deletions
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12
ShellPkg/Library/UefiShellLevel2CommandsLib/Cd.c
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@ -1,6 +1,7 @@
/** @file
Main file for attrib shell level 2 function.
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
@ -164,7 +165,16 @@ ShellCommandRunCd (
StrCpyS (Cwd, StrSize (Directory) / sizeof (CHAR16) + 1, Directory);
StrCatS (Cwd, StrSize (Directory) / sizeof (CHAR16) + 1, L"\\");
Drive = GetFullyQualifiedPath (Cwd);
while (PathRemoveLastItem (Drive));
while (PathRemoveLastItem (Drive)) {
//
// Check if Drive contains 'fsx:\' only or still points to a sub-directory.
// Don't remove trailing '\' from Drive if it points to the root directory.
//
Path = StrStr (Drive, L":\\");
if ((Path != NULL) && (*(Path + 2) == CHAR_NULL)) {
break;
}
}
FreePool (Cwd);
}
}