diff options
Diffstat (limited to 'src/mscorlib/src/System/IO/Directory.cs')
| -rw-r--r-- | src/mscorlib/src/System/IO/Directory.cs | 806 |
1 files changed, 14 insertions, 792 deletions
diff --git a/src/mscorlib/src/System/IO/Directory.cs b/src/mscorlib/src/System/IO/Directory.cs index d6b68222cd..88a669a971 100644 --- a/src/mscorlib/src/System/IO/Directory.cs +++ b/src/mscorlib/src/System/IO/Directory.cs @@ -17,7 +17,6 @@ using System.Collections.Generic; using System.Security; -using System.Security.Permissions; using Microsoft.Win32; using Microsoft.Win32.SafeHandles; using System.Runtime.InteropServices; @@ -26,404 +25,7 @@ using System.Diagnostics.Contracts; namespace System.IO { - [ComVisible(true)] - public static class Directory { - public static DirectoryInfo GetParent(String path) - { - if (path==null) - throw new ArgumentNullException(nameof(path)); - - if (path.Length==0) - throw new ArgumentException(Environment.GetResourceString("Argument_PathEmpty"), nameof(path)); - Contract.EndContractBlock(); - - string fullPath = Path.GetFullPath(path); - - string s = Path.GetDirectoryName(fullPath); - if (s==null) - return null; - return new DirectoryInfo(s); - } - - public static DirectoryInfo CreateDirectory(String path) { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (path.Length == 0) - throw new ArgumentException(Environment.GetResourceString("Argument_PathEmpty")); - Contract.EndContractBlock(); - - return InternalCreateDirectoryHelper(path); - } - - internal static DirectoryInfo InternalCreateDirectoryHelper(String path) - { - Contract.Requires(path != null); - Contract.Requires(path.Length != 0); - - String fullPath = Path.GetFullPath(path); - - InternalCreateDirectory(fullPath, path, null); - - return new DirectoryInfo(fullPath, false); - } - - internal unsafe static void InternalCreateDirectory(String fullPath, String path, Object dirSecurityObj) - { - int length = fullPath.Length; - - // We need to trim the trailing slash or the code will try to create 2 directories of the same name. - if (length >= 2 && PathInternal.IsDirectorySeparator(fullPath[length - 1])) - length--; - - int lengthRoot = PathInternal.GetRootLength(fullPath); - - // For UNC paths that are only // or /// - if (length == 2 && PathInternal.IsDirectorySeparator(fullPath[1])) - throw new IOException(Environment.GetResourceString("IO.IO_CannotCreateDirectory", path)); - - // We can save a bunch of work if the directory we want to create already exists. This also - // saves us in the case where sub paths are inaccessible (due to ERROR_ACCESS_DENIED) but the - // final path is accessable and the directory already exists. For example, consider trying - // to create c:\Foo\Bar\Baz, where everything already exists but ACLS prevent access to c:\Foo - // and c:\Foo\Bar. In that case, this code will think it needs to create c:\Foo, and c:\Foo\Bar - // and fail to due so, causing an exception to be thrown. This is not what we want. - if (InternalExists(fullPath)) { - return; - } - - List<string> stackDir = new List<string>(); - - // Attempt to figure out which directories don't exist, and only - // create the ones we need. Note that InternalExists may fail due - // to Win32 ACL's preventing us from seeing a directory, and this - // isn't threadsafe. - - bool somepathexists = false; - - if (length > lengthRoot) { // Special case root (fullpath = X:\\) - int i = length-1; - while (i >= lengthRoot && !somepathexists) { - String dir = fullPath.Substring(0, i+1); - - if (!InternalExists(dir)) // Create only the ones missing - stackDir.Add(dir); - else - somepathexists = true; - - while (i > lengthRoot && fullPath[i] != Path.DirectorySeparatorChar && fullPath[i] != Path.AltDirectorySeparatorChar) i--; - i--; - } - } - - int count = stackDir.Count; - - // If we were passed a DirectorySecurity, convert it to a security - // descriptor and set it in he call to CreateDirectory. - Win32Native.SECURITY_ATTRIBUTES secAttrs = null; - - bool r = true; - int firstError = 0; - String errorString = path; - // If all the security checks succeeded create all the directories - while (stackDir.Count > 0) { - String name = stackDir[stackDir.Count - 1]; - stackDir.RemoveAt(stackDir.Count - 1); - if (PathInternal.IsDirectoryTooLong(name)) - throw new PathTooLongException(Environment.GetResourceString("IO.PathTooLong")); - r = Win32Native.CreateDirectory(name, secAttrs); - if (!r && (firstError == 0)) { - int currentError = Marshal.GetLastWin32Error(); - // While we tried to avoid creating directories that don't - // exist above, there are at least two cases that will - // cause us to see ERROR_ALREADY_EXISTS here. InternalExists - // can fail because we didn't have permission to the - // directory. Secondly, another thread or process could - // create the directory between the time we check and the - // time we try using the directory. Thirdly, it could - // fail because the target does exist, but is a file. - if (currentError != Win32Native.ERROR_ALREADY_EXISTS) - firstError = currentError; - else { - // If there's a file in this directory's place, or if we have ERROR_ACCESS_DENIED when checking if the directory already exists throw. - if (File.InternalExists(name) || (!InternalExists(name, out currentError) && currentError == Win32Native.ERROR_ACCESS_DENIED)) - { - firstError = currentError; - errorString = name; - } - } - } - } - - // We need this check to mask OS differences - // Handle CreateDirectory("X:\\foo") when X: doesn't exist. Similarly for n/w paths. - if ((count == 0) && !somepathexists) { - String root = InternalGetDirectoryRoot(fullPath); - if (!InternalExists(root)) { - // Extract the root from the passed in path again for security. - __Error.WinIOError(Win32Native.ERROR_PATH_NOT_FOUND, InternalGetDirectoryRoot(path)); - } - return; - } - - // Only throw an exception if creating the exact directory we - // wanted failed to work correctly. - if (!r && (firstError != 0)) { - __Error.WinIOError(firstError, errorString); - } - } - - - // Tests if the given path refers to an existing DirectoryInfo on disk. - // - // Your application must have Read permission to the directory's - // contents. - // - public static bool Exists(String path) - { - return InternalExistsHelper(path); - } - - internal static bool InternalExistsHelper(String path) { - try - { - if (path == null) - return false; - if (path.Length == 0) - return false; - - return InternalExists(Path.GetFullPath(path)); - } - catch (ArgumentException) { } - catch (NotSupportedException) { } // Security can throw this on ":" - catch (SecurityException) { } - catch (IOException) { } - catch (UnauthorizedAccessException) - { - Debug.Assert(false, "Ignore this assert and send a repro to Microsoft. This assert was tracking purposes only."); - } - return false; - } - - // Determine whether path describes an existing directory - // on disk, avoiding security checks. - internal static bool InternalExists(String path) { - int lastError = Win32Native.ERROR_SUCCESS; - return InternalExists(path, out lastError); - } - - // Determine whether path describes an existing directory - // on disk, avoiding security checks. - internal static bool InternalExists(String path, out int lastError) { - Win32Native.WIN32_FILE_ATTRIBUTE_DATA data = new Win32Native.WIN32_FILE_ATTRIBUTE_DATA(); - lastError = File.FillAttributeInfo(path, ref data, false, true); - - return (lastError == 0) && (data.fileAttributes != -1) - && ((data.fileAttributes & Win32Native.FILE_ATTRIBUTE_DIRECTORY) != 0); - } - - public static DateTime GetCreationTime(String path) - { - return File.GetCreationTime(path); - } - - public static DateTime GetCreationTimeUtc(String path) - { - return File.GetCreationTimeUtc(path); - } - - public static DateTime GetLastWriteTime(String path) - { - return File.GetLastWriteTime(path); - } - - public static DateTime GetLastWriteTimeUtc(String path) - { - return File.GetLastWriteTimeUtc(path); - } - - public static DateTime GetLastAccessTime(String path) - { - return File.GetLastAccessTime(path); - } - - public static DateTime GetLastAccessTimeUtc(String path) - { - return File.GetLastAccessTimeUtc(path); - } - - // Returns an array of filenames in the DirectoryInfo specified by path - public static String[] GetFiles(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFiles(path, "*", SearchOption.TopDirectoryOnly); - } - - // Returns an array of Files in the current DirectoryInfo matching the - // given search pattern (ie, "*.txt"). - public static String[] GetFiles(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFiles(path, searchPattern, SearchOption.TopDirectoryOnly); - } - - // Returns an array of Files in the current DirectoryInfo matching the - // given search pattern (ie, "*.txt") and search option - public static String[] GetFiles(String path, String searchPattern, SearchOption searchOption) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories)) - throw new ArgumentOutOfRangeException(nameof(searchOption), Environment.GetResourceString("ArgumentOutOfRange_Enum")); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFiles(path, searchPattern, searchOption); - } - - // Returns an array of Files in the current DirectoryInfo matching the - // given search pattern (ie, "*.txt") and search option - private static String[] InternalGetFiles(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - - return InternalGetFileDirectoryNames(path, path, searchPattern, true, false, searchOption, true); - } - - internal static String[] UnsafeGetFiles(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - - return InternalGetFileDirectoryNames(path, path, searchPattern, true, false, searchOption, false); - } - - // Returns an array of Directories in the current directory. - public static String[] GetDirectories(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetDirectories(path, "*", SearchOption.TopDirectoryOnly); - } - - // Returns an array of Directories in the current DirectoryInfo matching the - // given search criteria (ie, "*.txt"). - public static String[] GetDirectories(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetDirectories(path, searchPattern, SearchOption.TopDirectoryOnly); - } - - // Returns an array of Directories in the current DirectoryInfo matching the - // given search criteria (ie, "*.txt"). - public static String[] GetDirectories(String path, String searchPattern, SearchOption searchOption) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories)) - throw new ArgumentOutOfRangeException(nameof(searchOption), Environment.GetResourceString("ArgumentOutOfRange_Enum")); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetDirectories(path, searchPattern, searchOption); - } - - // Returns an array of Directories in the current DirectoryInfo matching the - // given search criteria (ie, "*.txt"). - private static String[] InternalGetDirectories(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - Contract.Ensures(Contract.Result<String[]>() != null); - - return InternalGetFileDirectoryNames(path, path, searchPattern, false, true, searchOption, true); - } - - internal static String[] UnsafeGetDirectories(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - Contract.Ensures(Contract.Result<String[]>() != null); - - return InternalGetFileDirectoryNames(path, path, searchPattern, false, true, searchOption, false); - } - - // Returns an array of strongly typed FileSystemInfo entries in the path - public static String[] GetFileSystemEntries(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFileSystemEntries(path, "*", SearchOption.TopDirectoryOnly); - } - - // Returns an array of strongly typed FileSystemInfo entries in the path with the - // given search criteria (ie, "*.txt"). We disallow .. as a part of the search criteria - public static String[] GetFileSystemEntries(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFileSystemEntries(path, searchPattern, SearchOption.TopDirectoryOnly); - } - - // Returns an array of strongly typed FileSystemInfo entries in the path with the - // given search criteria (ie, "*.txt"). We disallow .. as a part of the search criteria - public static String[] GetFileSystemEntries(String path, String searchPattern, SearchOption searchOption) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories)) - throw new ArgumentOutOfRangeException(nameof(searchOption), Environment.GetResourceString("ArgumentOutOfRange_Enum")); - Contract.Ensures(Contract.Result<String[]>() != null); - Contract.EndContractBlock(); - - return InternalGetFileSystemEntries(path, searchPattern, searchOption); - } - - private static String[] InternalGetFileSystemEntries(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - - return InternalGetFileDirectoryNames(path, path, searchPattern, true, true, searchOption, true); - } + internal static class Directory { // Private class that holds search data that is passed around // in the heap based stack recursion @@ -445,90 +47,7 @@ namespace System.IO public readonly SearchOption searchOption; } - - // Returns fully qualified user path of dirs/files that matches the search parameters. - // For recursive search this method will search through all the sub dirs and execute - // the given search criteria against every dir. - // For all the dirs/files returned, it will then demand path discovery permission for - // their parent folders (it will avoid duplicate permission checks) - internal static String[] InternalGetFileDirectoryNames(String path, String userPathOriginal, String searchPattern, bool includeFiles, bool includeDirs, SearchOption searchOption, bool checkHost) - { - Contract.Requires(path != null); - Contract.Requires(userPathOriginal != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - - IEnumerable<String> enble = FileSystemEnumerableFactory.CreateFileNameIterator( - path, userPathOriginal, searchPattern, - includeFiles, includeDirs, searchOption, checkHost); - List<String> fileList = new List<String>(enble); - return fileList.ToArray(); - } - - public static IEnumerable<String> EnumerateDirectories(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.EndContractBlock(); - - return InternalEnumerateDirectories(path, "*", SearchOption.TopDirectoryOnly); - } - - public static IEnumerable<String> EnumerateDirectories(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.EndContractBlock(); - - return InternalEnumerateDirectories(path, searchPattern, SearchOption.TopDirectoryOnly); - } - - public static IEnumerable<String> EnumerateDirectories(String path, String searchPattern, SearchOption searchOption) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories)) - throw new ArgumentOutOfRangeException(nameof(searchOption), Environment.GetResourceString("ArgumentOutOfRange_Enum")); - Contract.EndContractBlock(); - - return InternalEnumerateDirectories(path, searchPattern, searchOption); - } - - private static IEnumerable<String> InternalEnumerateDirectories(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - - return EnumerateFileSystemNames(path, searchPattern, searchOption, false, true); - } - - public static IEnumerable<String> EnumerateFiles(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - Contract.EndContractBlock(); - - return InternalEnumerateFiles(path, "*", SearchOption.TopDirectoryOnly); - } - - public static IEnumerable<String> EnumerateFiles(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - Contract.EndContractBlock(); - - return InternalEnumerateFiles(path, searchPattern, SearchOption.TopDirectoryOnly); - } - +#if PLATFORM_UNIX public static IEnumerable<String> EnumerateFiles(String path, String searchPattern, SearchOption searchOption) { if (path == null) @@ -553,52 +72,6 @@ namespace System.IO return EnumerateFileSystemNames(path, searchPattern, searchOption, true, false); } - public static IEnumerable<String> EnumerateFileSystemEntries(String path) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - Contract.EndContractBlock(); - - return InternalEnumerateFileSystemEntries(path, "*", SearchOption.TopDirectoryOnly); - } - - public static IEnumerable<String> EnumerateFileSystemEntries(String path, String searchPattern) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - Contract.EndContractBlock(); - - return InternalEnumerateFileSystemEntries(path, searchPattern, SearchOption.TopDirectoryOnly); - } - - public static IEnumerable<String> EnumerateFileSystemEntries(String path, String searchPattern, SearchOption searchOption) - { - if (path == null) - throw new ArgumentNullException(nameof(path)); - if (searchPattern == null) - throw new ArgumentNullException(nameof(searchPattern)); - if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories)) - throw new ArgumentOutOfRangeException(nameof(searchOption), Environment.GetResourceString("ArgumentOutOfRange_Enum")); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - Contract.EndContractBlock(); - - return InternalEnumerateFileSystemEntries(path, searchPattern, searchOption); - } - - private static IEnumerable<String> InternalEnumerateFileSystemEntries(String path, String searchPattern, SearchOption searchOption) - { - Contract.Requires(path != null); - Contract.Requires(searchPattern != null); - Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly); - Contract.Ensures(Contract.Result<IEnumerable<String>>() != null); - - return EnumerateFileSystemNames(path, searchPattern, searchOption, true, true); - } - private static IEnumerable<String> EnumerateFileSystemNames(String path, String searchPattern, SearchOption searchOption, bool includeFiles, bool includeDirs) { @@ -610,60 +83,14 @@ namespace System.IO return FileSystemEnumerableFactory.CreateFileNameIterator(path, path, searchPattern, includeFiles, includeDirs, searchOption, true); } - - // Retrieves the names of the logical drives on this machine in the - // form "C:\". - // - // Your application must have System Info permission. - // - public static String[] GetLogicalDrives() - { - Contract.Ensures(Contract.Result<String[]>() != null); - -#pragma warning disable 618 - new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Demand(); -#pragma warning restore 618 - - int drives = Win32Native.GetLogicalDrives(); - if (drives==0) - __Error.WinIOError(); - uint d = (uint)drives; - int count = 0; - while (d != 0) { - if (((int)d & 1) != 0) count++; - d >>= 1; - } - String[] result = new String[count]; - char[] root = new char[] {'A', ':', '\\'}; - d = (uint)drives; - count = 0; - while (d != 0) { - if (((int)d & 1) != 0) { - result[count++] = new String(root); - } - d >>= 1; - root[0]++; - } - return result; - } - - public static String GetDirectoryRoot(String path) { - if (path==null) - throw new ArgumentNullException(nameof(path)); - Contract.EndContractBlock(); - - string fullPath = Path.GetFullPath(path); - string root = fullPath.Substring(0, PathInternal.GetRootLength(fullPath)); - - return root; - } +#endif // PLATFORM_UNIX internal static String InternalGetDirectoryRoot(String path) { if (path == null) return null; return path.Substring(0, PathInternal.GetRootLength(path)); } - /*===============================CurrentDirectory=============================== + /*===============================CurrentDirectory=============================== **Action: Provides a getter and setter for the current directory. The original ** current DirectoryInfo is the one from which the process was started. **Returns: The current DirectoryInfo (from the getter). Void from the setter. @@ -673,20 +100,21 @@ namespace System.IO public static String GetCurrentDirectory() { // Start with a buffer the size of MAX_PATH - using (StringBuffer buffer = new StringBuffer(260)) + StringBuffer buffer = new StringBuffer(260); + try { uint result = 0; - while ((result = Win32Native.GetCurrentDirectoryW(buffer.CharCapacity, buffer.GetHandle())) > buffer.CharCapacity) + while ((result = Win32Native.GetCurrentDirectoryW((uint)buffer.Capacity, buffer.UnderlyingArray)) > buffer.Capacity) { // Reported size is greater than the buffer size. Increase the capacity. // The size returned includes the null only if more space is needed (this case). - buffer.EnsureCharCapacity(result); + buffer.EnsureCapacity(checked((int)result)); } if (result == 0) __Error.WinIOError(); - buffer.Length = result; + buffer.Length = (int)result; #if !PLATFORM_UNIX if (buffer.Contains('~')) @@ -695,12 +123,16 @@ namespace System.IO return buffer.ToString(); } + finally + { + buffer.Free(); + } } public static void SetCurrentDirectory(String path) { if (path==null) - throw new ArgumentNullException("value"); + throw new ArgumentNullException(nameof(path)); if (path.Length==0) throw new ArgumentException(Environment.GetResourceString("Argument_PathEmpty")); if (path.Length >= Path.MaxPath) @@ -718,216 +150,6 @@ namespace System.IO __Error.WinIOError(errorCode, fulldestDirName); } } - - public static void Move(String sourceDirName,String destDirName) - { - if (sourceDirName==null) - throw new ArgumentNullException(nameof(sourceDirName)); - if (sourceDirName.Length==0) - throw new ArgumentException(Environment.GetResourceString("Argument_EmptyFileName"), nameof(sourceDirName)); - if (destDirName==null) - throw new ArgumentNullException(nameof(destDirName)); - if (destDirName.Length==0) - throw new ArgumentException(Environment.GetResourceString("Argument_EmptyFileName"), nameof(destDirName)); - - String sourcePath = Path.GetFullPath(sourceDirName); - String destPath = Path.GetFullPath(destDirName); - - if (String.Compare(sourcePath, destPath, StringComparison.OrdinalIgnoreCase) == 0) - throw new IOException(Environment.GetResourceString("IO.IO_SourceDestMustBeDifferent")); - - String sourceRoot = Path.GetPathRoot(sourcePath); - String destinationRoot = Path.GetPathRoot(destPath); - if (String.Compare(sourceRoot, destinationRoot, StringComparison.OrdinalIgnoreCase) != 0) - throw new IOException(Environment.GetResourceString("IO.IO_SourceDestMustHaveSameRoot")); - - if (!Win32Native.MoveFile(sourceDirName, destDirName)) - { - int hr = Marshal.GetLastWin32Error(); - if (hr == Win32Native.ERROR_FILE_NOT_FOUND) // Source dir not found - { - hr = Win32Native.ERROR_PATH_NOT_FOUND; - __Error.WinIOError(hr, sourcePath); - } - // This check was originally put in for Win9x (unfortunately without special casing it to be for Win9x only). We can't change the NT codepath now for backcomp reasons. - if (hr == Win32Native.ERROR_ACCESS_DENIED) // WinNT throws IOException. This check is for Win9x. We can't change it for backcomp. - throw new IOException(Environment.GetResourceString("UnauthorizedAccess_IODenied_Path", sourceDirName), Win32Native.MakeHRFromErrorCode(hr)); - __Error.WinIOError(hr, String.Empty); - } - } - - public static void Delete(String path) - { - String fullPath = Path.GetFullPath(path); - Delete(fullPath, path, false); - } - - public static void Delete(String path, bool recursive) - { - String fullPath = Path.GetFullPath(path); - Delete(fullPath, path, recursive); - } - - // Called from DirectoryInfo as well. FullPath is fully qualified, - // while the user path is used for feedback in exceptions. - internal static void Delete(String fullPath, String userPath, bool recursive) - { - // Do not recursively delete through reparse points. Perhaps in a - // future version we will add a new flag to control this behavior, - // but for now we're much safer if we err on the conservative side. - // This applies to symbolic links and mount points. - Win32Native.WIN32_FILE_ATTRIBUTE_DATA data = new Win32Native.WIN32_FILE_ATTRIBUTE_DATA(); - int dataInitialised = File.FillAttributeInfo(fullPath, ref data, false, true); - if (dataInitialised != 0) { - // Ensure we throw a DirectoryNotFoundException. - if (dataInitialised == Win32Native.ERROR_FILE_NOT_FOUND) - dataInitialised = Win32Native.ERROR_PATH_NOT_FOUND; - __Error.WinIOError(dataInitialised, fullPath); - } - - if (((FileAttributes)data.fileAttributes & FileAttributes.ReparsePoint) != 0) - recursive = false; - - DeleteHelper(fullPath, userPath, recursive, true); - } - - // Note that fullPath is fully qualified, while userPath may be relative. - private static void DeleteHelper(String fullPath, String userPath, bool recursive, bool throwOnTopLevelDirectoryNotFound) - { - bool r; - int hr; - Exception ex = null; - - // Do not recursively delete through reparse points. Perhaps in a - // future version we will add a new flag to control this behavior, - // but for now we're much safer if we err on the conservative side. - // This applies to symbolic links and mount points. - // Note the logic to check whether fullPath is a reparse point is - // in Delete(String, String, bool), and will set "recursive" to false. - // Note that Win32's DeleteFile and RemoveDirectory will just delete - // the reparse point itself. - - if (recursive) { - Win32Native.WIN32_FIND_DATA data = new Win32Native.WIN32_FIND_DATA(); - - // Open a Find handle - using (SafeFindHandle hnd = Win32Native.FindFirstFile(fullPath + Path.DirectorySeparatorChar + "*", data)) { - if (hnd.IsInvalid) { - hr = Marshal.GetLastWin32Error(); - __Error.WinIOError(hr, fullPath); - } - - do { - bool isDir = (0!=(data.dwFileAttributes & Win32Native.FILE_ATTRIBUTE_DIRECTORY)); - if (isDir) { - // Skip ".", "..". - if (data.cFileName.Equals(".") || data.cFileName.Equals("..")) - continue; - - // Recurse for all directories, unless they are - // reparse points. Do not follow mount points nor - // symbolic links, but do delete the reparse point - // itself. - bool shouldRecurse = (0 == (data.dwFileAttributes & (int) FileAttributes.ReparsePoint)); - if (shouldRecurse) { - String newFullPath = Path.Combine(fullPath, data.cFileName); - String newUserPath = Path.Combine(userPath, data.cFileName); - try { - DeleteHelper(newFullPath, newUserPath, recursive, false); - } - catch(Exception e) { - if (ex == null) { - ex = e; - } - } - } - else { - // Check to see if this is a mount point, and - // unmount it. - if (data.dwReserved0 == Win32Native.IO_REPARSE_TAG_MOUNT_POINT) { - // Use full path plus a trailing '\' - String mountPoint = Path.Combine(fullPath, data.cFileName + Path.DirectorySeparatorChar); - r = Win32Native.DeleteVolumeMountPoint(mountPoint); - if (!r) { - hr = Marshal.GetLastWin32Error(); - if (hr != Win32Native.ERROR_PATH_NOT_FOUND) { - try { - __Error.WinIOError(hr, data.cFileName); - } - catch(Exception e) { - if (ex == null) { - ex = e; - } - } - } - } - } - - // RemoveDirectory on a symbolic link will - // remove the link itself. - String reparsePoint = Path.Combine(fullPath, data.cFileName); - r = Win32Native.RemoveDirectory(reparsePoint); - if (!r) { - hr = Marshal.GetLastWin32Error(); - if (hr != Win32Native.ERROR_PATH_NOT_FOUND) { - try { - __Error.WinIOError(hr, data.cFileName); - } - catch(Exception e) { - if (ex == null) { - ex = e; - } - } - } - } - } - } - else { - String fileName = Path.Combine(fullPath, data.cFileName); - r = Win32Native.DeleteFile(fileName); - if (!r) { - hr = Marshal.GetLastWin32Error(); - if (hr != Win32Native.ERROR_FILE_NOT_FOUND) { - try { - __Error.WinIOError(hr, data.cFileName); - } - catch (Exception e) { - if (ex == null) { - ex = e; - } - } - } - } - } - } while (Win32Native.FindNextFile(hnd, data)); - // Make sure we quit with a sensible error. - hr = Marshal.GetLastWin32Error(); - } - - if (ex != null) - throw ex; - if (hr!=0 && hr!=Win32Native.ERROR_NO_MORE_FILES) - __Error.WinIOError(hr, userPath); - } - - r = Win32Native.RemoveDirectory(fullPath); - - if (!r) { - hr = Marshal.GetLastWin32Error(); - if (hr == Win32Native.ERROR_FILE_NOT_FOUND) // A dubious error code. - hr = Win32Native.ERROR_PATH_NOT_FOUND; - // This check was originally put in for Win9x (unfortunately without special casing it to be for Win9x only). We can't change the NT codepath now for backcomp reasons. - if (hr == Win32Native.ERROR_ACCESS_DENIED) - throw new IOException(Environment.GetResourceString("UnauthorizedAccess_IODenied_Path", userPath)); - - // don't throw the DirectoryNotFoundException since this is a subdir and there could be a race condition - // between two Directory.Delete callers - if (hr == Win32Native.ERROR_PATH_NOT_FOUND && !throwOnTopLevelDirectoryNotFound) - return; - - __Error.WinIOError(hr, fullPath); - } - } } } |