Commit dd0d7edb authored by Pali Rohár's avatar Pali Rohár Committed by Steve French
Browse files

smb: Update comments about some reparse point tags 

NFS-style reparse points are recognized only by the Windows NFS server 2012
and new. Windows 8 does not contain Windows NFS server, so these reparse
points are not used on Windows 8.

Reparse points with IO_REPARSE_TAG_AF_UNIX tag were primarily introduced for
native Win32 AF_UNIX sockets and later were re-used by also by WSL:
https://devblogs.microsoft.com/commandline/af_unix-comes-to-windows/
https://devblogs.microsoft.com/commandline/windowswsl-interop-with-af_unix/



Signed-off-by: default avatarPali Rohár <pali@kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent a9023656

fs/smb/common/smbfsctl.h

+4 −3
Original line number Diff line number Diff line
@@ -140,20 +140,21 @@ 
/* Used by the DFS filter See MS-DFSC */

#define IO_REPARSE_TAG_DFSR          0x80000012

#define IO_REPARSE_TAG_FILTER_MANAGER 0x8000000B

/* See section MS-FSCC 2.1.2.4 */

/* Native SMB symlinks since Windows Vista, see MS-FSCC 2.1.2.4 */

#define IO_REPARSE_TAG_SYMLINK       0xA000000C

#define IO_REPARSE_TAG_DEDUP         0x80000013

#define IO_REPARSE_APPXSTREAM	     0xC0000014

/* NFS symlinks, Win 8/SMB3 and later */

/* NFS special files used by Windows NFS server since Windows Server 2012, see MS-FSCC 2.1.2.6 */

#define IO_REPARSE_TAG_NFS           0x80000014

/*

 * AzureFileSync - see

 * https://docs.microsoft.com/en-us/azure/storage/files/storage-sync-cloud-tiering

 */

#define IO_REPARSE_TAG_AZ_FILE_SYNC  0x8000001e

/* Native Win32 AF_UNIX sockets since Windows 10 April 2018 Update, used also by WSL */

#define IO_REPARSE_TAG_AF_UNIX       0x80000023

/* WSL reparse tags */

#define IO_REPARSE_TAG_LX_SYMLINK    0xA000001D

#define IO_REPARSE_TAG_AF_UNIX	     0x80000023

#define IO_REPARSE_TAG_LX_FIFO	     0x80000024

#define IO_REPARSE_TAG_LX_CHR	     0x80000025

#define IO_REPARSE_TAG_LX_BLK	     0x80000026