public override void MoveDirectory(string sourceFullPath, string destFullPath)
{
// Windows doesn't care if you try and copy a file via "MoveDirectory"...
if (FileExists(sourceFullPath))
{
// ... but it doesn't like the source to have a trailing slash ...
// On Windows we end up with ERROR_INVALID_NAME, which is
// "The filename, directory name, or volume label syntax is incorrect."
//
// This surfaces as a IOException, if we let it go beyond here it would
// give DirectoryNotFound.
if (PathHelpers.EndsInDirectorySeparator(sourceFullPath))
{
throw new IOException(SR.Format(SR.IO_PathNotFound_Path, sourceFullPath));
}
// ... but it doesn't care if the destination has a trailing separator.
destFullPath = PathHelpers.TrimEndingDirectorySeparator(destFullPath);
}
if (Interop.Sys.Rename(sourceFullPath, destFullPath) < 0)
{
Interop.ErrorInfo errorInfo = Interop.Sys.GetLastErrorInfo();
switch (errorInfo.Error)
{
case Interop.Error.EACCES: // match Win32 exception
throw new IOException(SR.Format(SR.UnauthorizedAccess_IODenied_Path, sourceFullPath), errorInfo.RawErrno);
default:
throw Interop.GetExceptionForIoErrno(errorInfo, sourceFullPath, isDirectory: true);
}
}
}
public override bool FileExists(string fullPath)
{
Interop.ErrorInfo ignored;
// Windows doesn't care about the trailing separator
return(FileExists(PathHelpers.TrimEndingDirectorySeparator(fullPath), Interop.Sys.FileTypes.S_IFREG, out ignored));
}
private static String GetDirName(String fullPath)
{
Debug.Assert(fullPath != null);
return(PathHelpers.IsRoot(fullPath) ?
fullPath :
Path.GetFileName(PathHelpers.TrimEndingDirectorySeparator(fullPath)));
}
public override bool FileExists(string fullPath)
{
Interop.ErrorInfo ignored;
// Input allows trailing separators in order to match Windows behavior
// Unix does not accept trailing separators, so must be trimmed
return(FileExists(PathHelpers.TrimEndingDirectorySeparator(fullPath), Interop.Sys.FileTypes.S_IFREG, out ignored));
}
private void Init(string originalPath, string fullPath = null, string fileName = null, bool isNormalized = false)
{
// Want to throw the original argument name
OriginalPath = originalPath ?? throw new ArgumentNullException("path");
fullPath = fullPath ?? originalPath;
fullPath = isNormalized ? fullPath : Path.GetFullPath(fullPath);
_name = fileName ?? (PathHelpers.IsRoot(fullPath) ?
fullPath :
Path.GetFileName(PathHelpers.TrimEndingDirectorySeparator(fullPath)));
FullPath = fullPath;
}
private void Init(string originalPath, string fullPath = null, string fileName = null, bool isNormalized = false)
{
// Want to throw the original argument name
OriginalPath = originalPath ?? throw new ArgumentNullException("path");
fullPath = fullPath ?? originalPath;
Debug.Assert(!isNormalized || !PathInternal.IsPartiallyQualified(fullPath), $"'{fullPath}' should be fully qualified if normalized");
fullPath = isNormalized ? fullPath : Path.GetFullPath(fullPath);
_name = fileName ?? (PathHelpers.IsRoot(fullPath) ?
fullPath :
Path.GetFileName(PathHelpers.TrimEndingDirectorySeparator(fullPath)));
FullPath = fullPath;
}
public override void DeleteFile(string fullPath)
{
if (Interop.Sys.Unlink(fullPath) < 0)
{
Interop.ErrorInfo errorInfo = Interop.Sys.GetLastErrorInfo();
switch (errorInfo.Error)
{
case Interop.Error.ENOENT:
// ENOENT means it already doesn't exist; nop
return;
case Interop.Error.EROFS:
// EROFS means the file system is read-only
// Need to manually check file existence
// github.com/dotnet/corefx/issues/21273
Interop.ErrorInfo fileExistsError;
// Input allows trailing separators in order to match Windows behavior
// Unix does not accept trailing separators, so must be trimmed
if (!FileExists(PathHelpers.TrimEndingDirectorySeparator(fullPath),
Interop.Sys.FileTypes.S_IFREG, out fileExistsError) &&
fileExistsError.Error == Interop.Error.ENOENT)
{
return;
}
goto default;
case Interop.Error.EISDIR:
errorInfo = Interop.Error.EACCES.Info();
goto default;
default:
throw Interop.GetExceptionForIoErrno(errorInfo, fullPath);
}
}
}
private void EnsureStatInitialized()
{
if (_fileinfoInitialized == -1)
{
Refresh();
}
if (_fileinfoInitialized != 0)
{
int errno = _fileinfoInitialized;
_fileinfoInitialized = -1;
var errorInfo = new Interop.ErrorInfo(errno);
// Windows distinguishes between whether the directory or the file isn't found,
// and throws a different exception in these cases. We attempt to approximate that
// here; there is a race condition here, where something could change between
// when the error occurs and our checks, but it's the best we can do, and the
// worst case in such a race condition (which could occur if the file system is
// being manipulated concurrently with these checks) is that we throw a
// FileNotFoundException instead of DirectoryNotFoundexception.
// directoryError is true only if a FileNotExists error was provided and the parent
// directory of the file represented by _fullPath is nonexistent
bool directoryError = (errorInfo.Error == Interop.Error.ENOENT && !Directory.Exists(Path.GetDirectoryName(PathHelpers.TrimEndingDirectorySeparator(_fullPath)))); // The destFile's path is invalid
throw Interop.GetExceptionForIoErrno(errorInfo, _fullPath, directoryError);
}
}
