/// <summary>
/// Get the access rights applied to the given file handle.
/// </summary>
public unsafe static FileAccessRights GetRights(SafeFileHandle fileHandle)
{
FILE_ACCESS_INFORMATION access = new FILE_ACCESS_INFORMATION();
NTSTATUS result = Imports.NtQueryInformationFile(fileHandle, out _,
&access, (uint)sizeof(FILE_ACCESS_INFORMATION), FileInformationClass.FileAccessInformation);
if (result != NTSTATUS.STATUS_SUCCESS)
{
throw ErrorMethods.GetIoExceptionForNTStatus(result);
}
return(access.AccessFlags);
}
public void FileInfo_Query_FileAccessInformation_DataSuffix()
{
if (this.fsaAdapter.FileSystem == FileSystem.FAT32)
{
this.TestSite.Assume.Inconclusive("File name with stream type or stream data as suffix is not supported by FAT32.");
}
// Create a new file
string fileName = this.fsaAdapter.ComposeRandomFileName(8, ".txt", CreateOptions.NON_DIRECTORY_FILE);
fileName = $"{fileName}::$DATA";
BaseTestSite.Log.Add(LogEntryKind.TestStep, $"Create a file {fileName}");
FILEID fileId;
uint treeId = 0;
ulong sessionId = 0;
MessageStatus status = this.fsaAdapter.CreateFile(
fileName,
(FileAttribute)0,
CreateOptions.NON_DIRECTORY_FILE,
(FileAccess.GENERIC_READ | FileAccess.GENERIC_WRITE),
(ShareAccess.FILE_SHARE_READ | ShareAccess.FILE_SHARE_WRITE | ShareAccess.FILE_SHARE_DELETE),
CreateDisposition.OPEN_IF,
out fileId,
out treeId,
out sessionId);
this.fsaAdapter.AssertAreEqual(this.Manager,
MessageStatus.SUCCESS,
status,
$"Create file with name {fileName} is expected to succeed.");
long byteCount;
byte[] outputBuffer;
FILE_ACCESS_INFORMATION fileAccessInfo = new FILE_ACCESS_INFORMATION();
uint outputBufferSize = (uint)TypeMarshal.ToBytes <FILE_ACCESS_INFORMATION>(fileAccessInfo).Length;
status = this.fsaAdapter.QueryFileInformation(
FileInfoClass.FILE_ACCESS_INFORMATION,
outputBufferSize,
out byteCount,
out outputBuffer);
this.fsaAdapter.AssertAreEqual(this.Manager,
MessageStatus.SUCCESS,
status,
$"Query access information of file {fileName} is expected to succeed.");
}
private void AlternateDataStream_Query_FileAccessInformation(FileType fileType)
{
//Prerequisites: Create streams on a newly created file
//Step 1: Query FILE_ACCESS_INFORMATION
long byteCount;
byte[] outputBuffer;
FILE_ACCESS_INFORMATION fileAccessInfo = new FILE_ACCESS_INFORMATION();
uint outputBufferSize = (uint)TypeMarshal.ToBytes <FILE_ACCESS_INFORMATION>(fileAccessInfo).Length;
BaseTestSite.Log.Add(LogEntryKind.TestStep, "{0}. QueryFileInformation with FileInfoClass.FILE_ACCESS_INFORMATION", ++testStep);
status = this.fsaAdapter.QueryFileInformation(FileInfoClass.FILE_ACCESS_INFORMATION, outputBufferSize, out byteCount, out outputBuffer);
this.fsaAdapter.AssertIfNotSuccess(status, "QueryFileInformation with FileInfoClass.FILE_ACCESS_INFORMATION operation failed.");
// Step 2: Verify FILE_ACCESS_INFORMATION
fileAccessInfo = TypeMarshal.ToStruct <FILE_ACCESS_INFORMATION>(outputBuffer);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "{0}. Verify outputBuffer.AccessFlags", ++testStep);
BaseTestSite.Assert.IsNotNull(fileAccessInfo, "The outputBuffer.AccessFlags MUST be set to Open.GrantedAccess.");
}
