[PATCH] ShellPkg/Ls: Handle path specified from root

[Jeff Westfahl <jeff.westfahl@ni.com>]

This fixes 'ls' when specifying a path from the root, like "ls \" from
within a subfolder. Currently, 'ls' will append the specified path to the
current working directory. The correct behavior is to start from the root
of the currently selected filesystem.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com>
---
 ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c b/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
index 52ae18f..b14bbcd 100644
--- a/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
+++ b/ShellPkg/Library/UefiShellLevel2CommandsLib/Ls.c
@@ -679,7 +679,7 @@ ShellCommandRunLs (
             // We got a valid fully qualified path or we have a CWD
             //
             ASSERT((FullPath == NULL && Size == 0) || (FullPath != NULL));
-            if (StrStr(PathName, L":") == NULL) {
+            if (PathName [0] != L'\\' && StrStr(PathName, L":") == NULL) {
               StrnCatGrow(&FullPath, &Size, gEfiShellProtocol->GetCurDir(NULL), 0);
               if (FullPath == NULL) {
                 ShellCommandLineFreeVarList (Package);
-- 
2.7.4