diff options
| author | ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-25 02:00:22 +0000 |
|---|---|---|
| committer | ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-25 02:00:22 +0000 |
| commit | 0b6cb335fa82b399cfa92350a631d0c242926994 (patch) | |
| tree | 7712d4b9052ef7d64449f9824b49bc2b8de15db0 /ShellPkg/Library/UefiShellLib | |
| parent | cc7f6cf32f614d647bde259d959d29abdc4e4e04 (diff) | |
| download | edk2-platforms-0b6cb335fa82b399cfa92350a631d0c242926994.tar.xz | |
Fixed some alignment faults in IPF platform
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Carsey Jaben <jaben.carsey@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14081 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ShellPkg/Library/UefiShellLib')
| -rw-r--r-- | ShellPkg/Library/UefiShellLib/UefiShellLib.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c b/ShellPkg/Library/UefiShellLib/UefiShellLib.c index 222bd98acd..103ddfbd5d 100644 --- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c +++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c @@ -486,6 +486,8 @@ ShellOpenFileByDevicePath( EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *EfiSimpleFileSystemProtocol;
EFI_FILE_PROTOCOL *Handle1;
EFI_FILE_PROTOCOL *Handle2;
+ CHAR16 *FnafPathName;
+ UINTN PathLen;
if (FilePath == NULL || FileHandle == NULL || DeviceHandle == NULL) {
return (EFI_INVALID_PARAMETER);
@@ -552,12 +554,35 @@ ShellOpenFileByDevicePath( Handle1 = NULL;
//
+ // File Name Alignment Fix (FNAF)
+ // Handle2->Open may be incapable of handling a unaligned CHAR16 data.
+ // The structure pointed to by FilePath may be not CHAR16 aligned.
+ // This code copies the potentially unaligned PathName data from the
+ // FilePath structure to the aligned FnafPathName for use in the
+ // calls to Handl2->Open.
+ //
+
+ //
+ // Determine length of PathName, in bytes.
+ //
+ PathLen = DevicePathNodeLength (*FilePath) - SIZE_OF_FILEPATH_DEVICE_PATH;
+
+ //
+ // Allocate memory for the aligned copy of the string Extra allocation is to allow for forced alignment
+ // Copy bytes from possibly unaligned location to aligned location
+ //
+ FnafPathName = AllocateCopyPool(PathLen, (UINT8 *)((FILEPATH_DEVICE_PATH*)*FilePath)->PathName);
+ if (FnafPathName == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
// Try to test opening an existing file
//
Status = Handle2->Open (
Handle2,
&Handle1,
- ((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,
+ FnafPathName,
OpenMode &~EFI_FILE_MODE_CREATE,
0
);
@@ -569,11 +594,17 @@ ShellOpenFileByDevicePath( Status = Handle2->Open (
Handle2,
&Handle1,
- ((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,
+ FnafPathName,
OpenMode,
Attributes
);
}
+
+ //
+ // Free the alignment buffer
+ //
+ FreePool(FnafPathName);
+
//
// Close the last node
//
|