From patchwork Sat Sep 28 21:59:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Pali_Roh=C3=A1r?= X-Patchwork-Id: 13814757 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C93482488; Sat, 28 Sep 2024 22:00:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727560847; cv=none; b=obcIcLVHrS/ffgvnRbni4vAPM8iPoW+h0E5y4WulSPv+DKi6Xt+5+7ccEhC+2XeiJbIlcE6z0qQK6RTk+0ppQ8u2tv0UDptky2QV6i/TEZDVgg18N7rWJoNzeu6I+w4X0J32wKrewJ/tq2AbRD4rmrbMwX0zY9qp7hV4mYwTFPg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727560847; c=relaxed/simple; bh=30vYceahhAZ6cpDf6/qon3ZtC2Ak+QBMUSkaa2C2LTQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=RC0U4l9/j3jERoOvk94yasQqap1GN/AmQJo1ynTzB8i/OZe7eMb+CxdN3WafgOh9y8oXlhRZpZFa89S5NsqbSmDdFJezK0aRyjtKPqNJvwteHs98pXoYwsTW6Hg0zkH27h1ZaWGpKxfJzBWKNslk2DTFariXQrWJNdbznadovGs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B/L1YbNQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B/L1YbNQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 103CDC4CEC5; Sat, 28 Sep 2024 22:00:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727560847; bh=30vYceahhAZ6cpDf6/qon3ZtC2Ak+QBMUSkaa2C2LTQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B/L1YbNQ4eAf5eSMc2BCNwNXBHBlz8kVTzMQ5Z3h0yyUuDPiJd49dzATnPAahPPZi RLz1Nk/NjcJyh2+8djh8+xRJJhwozlkEMBWGR4SuAN+H5YNzrasVDUU7TtFy4GhnoS i1sryzAo9BXMzdEpeHLj+NIZkpdavlnt3tiUVyWisP5zH16rxw94Ym5LnNTL96utAQ Gd1h0sdEL/1WQegu351IdPu1f6v5jlJSYzkET4yr7N5Z9s23yvptGcbD5kHxb5Mzkc 6QXM7mtUvGvdJdFW0zTbPPcCIXcWXw35S1S8eOqeu/2hBBSXpokU7BZ8V7VTQtdahq Q6gUOWaUrVPQg== Received: by pali.im (Postfix) id 5F9EF9F7; Sun, 29 Sep 2024 00:00:40 +0200 (CEST) From: =?utf-8?q?Pali_Roh=C3=A1r?= To: Steve French , Paulo Alcantara , Ronnie Sahlberg Cc: linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/8] smb: Update comments about some reparse point tags Date: Sat, 28 Sep 2024 23:59:41 +0200 Message-Id: <20240928215948.4494-2-pali@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20240928215948.4494-1-pali@kernel.org> References: <20240928215948.4494-1-pali@kernel.org> Precedence: bulk X-Mailing-List: linux-cifs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- fs/smb/common/smbfsctl.h | 7 ++++--- 1 file 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