From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794060996; b=0d9CRpfdI6Q6O6rPSimH7YFIQ14sWlZPM9OyTj+qbbbk0oieJeH2wW46PHOLQAPq70ul VvNcn695u1AvKIwe/Q5TyIX1bZIHZeaNzdchsNFPjURNTMoCKhH4XilEOryjYf8ZrTue2 JV0Op8aNuvVPppz0u4iNMiGtz7H8+H9WKo+gGVdYJQC803cw3UTXvsPtEGGsaaiYzzDPo 48wXWQ9KJpnOd7RobSzeZPzAjBYel1mMdDKIyXVp8q8WjreiEql6zPaD6ctp++tS4XKID wR6LL5FTRabpinDLvpZr5TfSvTigeKK4yWU6PXTtxEduP1YGu/8x9WFA7+h4oeNKMWA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060996; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=J2J640MM/jPM+DCgkkXADKcGe2U/R+ydhkLkIs7dbHU=; b=21JA8ILQcdjhstOCfZrrHc8WT0UN3qd91QE+4GLg/jT6+HTV9TjlOTYqvJHrRsmZi96c VRAc7czj75CIA8mLarFF2u/gJd+p1LIWAU/qmx2mYISRNfFPnGlM40dj3YAv00zdRllLI uP8rWi3vnyOct2Oo8VWdtMLNROKPWyK5CujGNrvRdhPD2mBk+kIovtnaOExK5tb3Uc1pE 8c8vIxxP5sMmJWtOIdA7EjjCE7yYWILwKQwG40YC9XpE8W8DoFrSrCrYsXysTMe8ZtCcZ +tVvxoZSUNiOPaUT9ae2Mnnc3LE9U/TT+kpdJXE+wP3o82AohjQ1DcQQU2X6u1KEbkg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="Yzq8S/7M"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6FE1606EE86; Sat, 7 Nov 2026 14:16:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Yzq8S/7M Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E2A41F008A4; Sat, 7 Nov 2026 14:16:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060990; bh=J2J640MM/jPM+DCgkkXADKcGe2U/R+ydhkLkIs7dbHU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Yzq8S/7MEOwG8D7YkpCPypf2hMZoTzkXf4x81b1V4ujTqQ8BcKaq/578a/fVWh3Wv qdzxj645nzrUqweVXLHq3Z0LGEtV6tT4QWt4CskrllunSnGltA24+MYPfRb2yKoA9V qzGtdDiRqHCRzCnbGasq/kEGHNaW6XG/JtFJ1yL8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Namjae Jeon , Sasha Levin Subject: [PATCH 6.12 0339/1536] ksmbd: allow I/O on directory named streams Date: Sat, 7 Nov 2026 08:39:15 -0500 Message-ID: <20261107135007.208831536@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Namjae Jeon [ Upstream commit 8184c425a19d44f138d42b44cc363917c08e5f1c ] Named streams are stored as extended attributes on the base inode. The VFS read and write helpers reject directory inodes before or together with checking whether the handle represents a stream. Permit read and write operations when a directory-backed handle is a named stream. Continue rejecting direct I/O on ordinary directory handles. This fixes creation of the directory stream in smb2.getinfo.complex. Signed-off-by: Namjae Jeon Signed-off-by: Sasha Levin --- fs/smb/server/vfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c index 967f669974861..9b973d7064988 100644 --- a/fs/smb/server/vfs.c +++ b/fs/smb/server/vfs.c @@ -374,7 +374,7 @@ int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, ssize_t nbytes = 0; struct inode *inode = file_inode(filp); - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode) && !ksmbd_stream_fd(fp)) return -EISDIR; if (unlikely(count == 0)) @@ -502,7 +502,8 @@ int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, if (work->conn->connection_type) { if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE)) || - S_ISDIR(file_inode(fp->filp)->i_mode)) { + (S_ISDIR(file_inode(fp->filp)->i_mode) && + !ksmbd_stream_fd(fp))) { pr_err("no right to write(%pD)\n", fp->filp); err = -EACCES; goto out; -- 2.53.0