public override Int32 Open(
String fileName,
UInt32 createOptions,
UInt32 grantedAccess,
out Object fileNode,
out Object fileDesc0,
out FileInfo fileInfo,
out String normalizedName)
{
fileNode = default(Object);
normalizedName = default(String);
FileDescriptor fileDesc = null;
try
{
string path = GetWritePath(fileName);
if (Directory.Exists(path))
{
fileDesc = new FileDescriptor(fileName, new DirectoryInfo(path), true);
path = GetReadOnlyPath(fileName);
if (Directory.Exists(path))
{
fileDesc.ReadOnlyDirInfo = new DirectoryInfo(path);
}
}
else if (File.Exists(path))
{
fileDesc = new FileDescriptor(fileName,
new FileStream(
path,
FileMode.Open,
(FileSystemRights)grantedAccess,
FileShare.Read | FileShare.Write | FileShare.Delete,
4096,
0), true);
}
else
{
path = GetReadOnlyPath(fileName);
if (Directory.Exists(path))
{
fileDesc = new FileDescriptor(fileName, new DirectoryInfo(path), false);
}
else if (File.Exists(path))
{
fileDesc = new FileDescriptor(fileName,
new FileStream(
path,
FileMode.Open,
(FileSystemRights)grantedAccess,
FileShare.Read | FileShare.Write | FileShare.Delete,
4096,
0), false);
}
else
{
throw new FileNotFoundException();
}
}
fileDesc0 = fileDesc;
return(fileDesc.GetFileInfo(out fileInfo));
}
catch
{
if (fileDesc != null)
{
fileDesc.Dispose();
}
throw;
}
}
public override Boolean ReadDirectoryEntry(
Object fileNode,
Object fileDesc0,
String pattern,
String marker,
ref Object context,
out String fileName,
out FileInfo fileInfo)
{
FileDescriptor fileDesc = (FileDescriptor)fileDesc0;
if (null == fileDesc.FileSystemInfos)
{
if (null != pattern)
{
pattern = pattern.Replace('<', '*').Replace('>', '?').Replace('"', '.');
}
else
{
pattern = "*";
}
SortedList list = new SortedList();
if (fileDesc.IsWriteable())
{
if (null != fileDesc.WriteDirInfo && null != fileDesc.WriteDirInfo.Parent)
{
list.Add(".", fileDesc.WriteDirInfo);
list.Add("..", fileDesc.WriteDirInfo.Parent);
}
}
else
{
if (null != fileDesc.ReadOnlyDirInfo && null != fileDesc.ReadOnlyDirInfo.Parent)
{
list.Add(".", fileDesc.ReadOnlyDirInfo);
list.Add("..", fileDesc.ReadOnlyDirInfo.Parent);
}
}
if (fileDesc.WriteDirInfo != null)
{
IEnumerable e = fileDesc.WriteDirInfo.EnumerateFileSystemInfos(pattern);
foreach (FileSystemInfo info in e)
{
list.Add(info.Name, info);
}
}
if (fileDesc.ReadOnlyDirInfo != null)
{
IEnumerable e = fileDesc.ReadOnlyDirInfo.EnumerateFileSystemInfos(pattern);
foreach (FileSystemInfo info in e)
{
if (!list.ContainsKey(info.Name))
{
list.Add(info.Name, info);
}
}
}
fileDesc.FileSystemInfos = new DictionaryEntry[list.Count];
list.CopyTo(fileDesc.FileSystemInfos, 0);
}
int index;
if (null == context)
{
index = 0;
if (null != marker)
{
index = Array.BinarySearch(fileDesc.FileSystemInfos,
new DictionaryEntry(marker, null),
Utils._DirectoryEntryComparer);
if (0 <= index)
{
index++;
}
else
{
index = ~index;
}
}
}
else
{
index = (int)context;
}
if (fileDesc.FileSystemInfos.Length > index)
{
context = index + 1;
fileName = (String)fileDesc.FileSystemInfos[index].Key;
Utils.GetFileInfoFromFileSystemInfo(
(FileSystemInfo)fileDesc.FileSystemInfos[index].Value,
out fileInfo);
return(true);
}
else
{
fileName = default(String);
fileInfo = default(FileInfo);
return(false);
}
}
public override Int32 Create(
String fileName,
UInt32 createOptions,
UInt32 grantedAccess,
UInt32 fileAttributes,
Byte[] securityDescriptor,
UInt64 allocationSize,
out Object fileNode,
out Object fileDesc0,
out FileInfo fileInfo,
out String normalizedName)
{
fileNode = default(Object);
normalizedName = default(String);
FileDescriptor fileDesc = null;
try
{
var path = GetWritePath(fileName);
// directory or file?
if (0 == (createOptions & FILE_DIRECTORY_FILE))
{
// file
FileSecurity Security = null;
if (null != securityDescriptor)
{
Security = new FileSecurity();
Security.SetSecurityDescriptorBinaryForm(securityDescriptor);
}
fileDesc = new FileDescriptor(fileName,
new FileStream(
path,
FileMode.CreateNew,
(FileSystemRights)grantedAccess | FileSystemRights.WriteAttributes,
FileShare.Read | FileShare.Write | FileShare.Delete,
4096,
0,
Security), true);
fileDesc.SetFileAttributes(fileAttributes | (UInt32)System.IO.FileAttributes.Archive);
}
else
{
// directory
if (Directory.Exists(path))
{
Utils.ThrowIoExceptionWithNtStatus(STATUS_OBJECT_NAME_COLLISION);
}
DirectorySecurity Security = null;
if (null != securityDescriptor)
{
Security = new DirectorySecurity();
Security.SetSecurityDescriptorBinaryForm(securityDescriptor);
}
fileDesc = new FileDescriptor(fileName, Directory.CreateDirectory(path, Security), true);
fileDesc.SetFileAttributes(fileAttributes);
}
// assign the file descriptor
fileDesc0 = fileDesc;
return(fileDesc.GetFileInfo(out fileInfo));
}
catch
{
if (null != fileDesc)
{
fileDesc.Dispose();
}
throw;
}
}
