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ArmPlatformPkg/BootMonFs: Fix error codes returned by Open() and Read()

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



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16510 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ronald Cron
2014-12-12 19:03:30 +00:00
committed by oliviermartin
parent a40ff4578d
commit fb08c45511
5 changed files with 221 additions and 59 deletions
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26
ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c
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@@ -20,6 +20,23 @@
#include "BootMonFsInternal.h"
/**
Read data from an open file.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
is the file handle to read data from.
@param[in out] BufferSize On input, the size of the Buffer. On output, the
amount of data returned in Buffer. In both cases,
the size is measured in bytes.
@param[out] Buffer The buffer into which the data is read.
@retval EFI_SUCCESS The data was read.
@retval EFI_DEVICE_ERROR On entry, the current file position is
beyond the end of the file, or the device
reported an error while performing the read
operation.
@retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
**/
EFIAPI
EFI_STATUS
BootMonFsReadFile (
@@ -51,9 +68,14 @@ BootMonFsReadFile (
FileStart = (Media->LowestAlignedLba + File->HwDescription.BlockStart) * Media->BlockSize;
if (File->Position >= File->HwDescription.Region[0].Size) {
// The entire file has been read
// The entire file has been read or the position has been
// set past the end of the file.
*BufferSize = 0;
return EFI_DEVICE_ERROR;
if (File->Position > File->HwDescription.Region[0].Size) {
return EFI_DEVICE_ERROR;
} else {
return EFI_SUCCESS;
}
}
// This driver assumes that the entire file is in region 0.