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authorPali Rohár <pali@kernel.org>2024-09-28 23:59:41 +0200
committerSteve French <stfrench@microsoft.com>2024-09-29 17:28:40 -0500
commitdd0d7edb866db2b9d23dc50553cbdd3f6a159fba (patch)
tree20ca357b65addd232e943b7cbd20a77215b4b36f
parenta9023656bcd28aaf184974a121d3c2f2ec1ded46 (diff)
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: Pali Rohár <pali@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
-rw-r--r--fs/smb/common/smbfsctl.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/smb/common/smbfsctl.h b/fs/smb/common/smbfsctl.h
index a94d658b88e8..4b379e84c46b 100644
--- a/fs/smb/common/smbfsctl.h
+++ b/fs/smb/common/smbfsctl.h
@@ -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