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ArmPkg/SemihostFs: Various fixes for the file system 

- Fix file deletion from the shell.
- Fix file creation using the shell editor.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <Harry.Liebel@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15390 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Harry Liebel 2014-03-25 11:04:41 +00:00 committed by oliviermartin
parent 228fdff4be
commit d276ac10f1
2 changed files with 22 additions and 9 deletions
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6
ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.c
View File

@ -2,7 +2,7 @@
Support a Semi Host file system over a debuggers JTAG
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -544,7 +544,9 @@ FileSetInfo (
if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid) != 0) {
//Status = SetFilesystemInfo (Fcb, BufferSize, Buffer);
} else if (CompareGuid (InformationType, &gEfiFileInfoGuid) != 0) {
//Status = SetFileInfo (Fcb, BufferSize, Buffer);
// Semihosting does not give us access to setting file info, but
// if we fail here we cannot create new files.
Status = EFI_SUCCESS;
} else if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid) != 0) {
if (StrSize (Buffer) > 0) {
FreePool (mSemihostFsLabel);

25
ArmPkg/Library/SemihostLib/SemihostLib.c
View File

@ -1,7 +1,8 @@
/** @file
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Copyright (c) 2013 - 2014, ARM Ltd. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -73,10 +74,12 @@ SemihostFileSeek (
Result = Semihost_SYS_SEEK(&SeekBlock);
if (Result == 0) {
return RETURN_SUCCESS;
} else {
// Semihosting does not behave as documented. It returns the offset on
// success.
if (Result < 0) {
return RETURN_ABORTED;
} else {
return RETURN_SUCCESS;
}
}
@ -100,7 +103,7 @@ SemihostFileRead (
Result = Semihost_SYS_READ(&ReadBlock);
if (Result == *Length) {
if ((*Length != 0) && (Result == *Length)) {
return RETURN_ABORTED;
} else {
*Length -= Result;
@ -126,8 +129,11 @@ SemihostFileWrite (
WriteBlock.Length = *Length;
*Length = Semihost_SYS_WRITE(&WriteBlock);
return RETURN_SUCCESS;
if (*Length != 0)
return RETURN_ABORTED;
else
return RETURN_SUCCESS;
}
RETURN_STATUS
@ -174,6 +180,11 @@ SemihostFileRemove (
SEMIHOST_FILE_REMOVE_BLOCK RemoveBlock;
UINT32 Result;
// Remove any leading separator (e.g.: '\'). EFI Shell adds one.
if (*FileName == '\\') {
FileName++;
}
RemoveBlock.FileName = FileName;
RemoveBlock.NameLength = AsciiStrLen(FileName);