From mboxrd@z Thu Jan 1 00:00:00 1970 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 DF93114AD2E; Thu, 11 Apr 2024 10:30:44 +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=1712831445; cv=none; b=orS0e7PZkGzUER6H1O8RQMgvvLYV8l1lI6o+XAH+7MUevQVoBYOPFZbjCVtPj7CxybnaF/FbvWmNq4Uv42jOSAjs6lci1Wq137QMut44rIm2S5oUJgOHfx0us/ZOVUPGYInYTqvVY3dtNNzVM1kfTFYdPVZ4HrRo7MtNFUaI0Ws= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712831445; c=relaxed/simple; bh=XAPZ2s5IlXHU9PFUrUUc8M/4Ir45YsErKDqWN3XuDx4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QPs68Hel5WB2twHv74gDJBKCtKjcQcn9lGjwmbyXvTwIpfwN5J3wzeQ8pPpbBbqV0Rpjh8VN/slUl89NEqU+P3Jp+HEU3ttnfakM/9bA2lvyS0ku/OXBLZ5tvJhFzNp/OvDDYaygkuYgPd5vTIcgRJI4+TNsP5GWkPhoGoMC98w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=V7yZPJUU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="V7yZPJUU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6311EC433F1; Thu, 11 Apr 2024 10:30:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712831444; bh=XAPZ2s5IlXHU9PFUrUUc8M/4Ir45YsErKDqWN3XuDx4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V7yZPJUUCDeF6jX7DBxDc2RB+m/U+vDAz9T3rt7RSlTq7h/0WqPC5NyYCr+X2Z435 qbuIof3npvcpEhqPRWMkwA2vExYdIaRcpqMSWCJjy7ExZU1hKF/0fV7iFbF8wu/WtJ 9VSO/3zxctfa9acBRyXWQ5PXlSfImr/NAQ3StLaw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Roberto Sassu , Casey Schaufler , Sasha Levin Subject: [PATCH 5.10 011/294] smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity() Date: Thu, 11 Apr 2024 11:52:54 +0200 Message-ID: <20240411095435.977113083@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240411095435.633465671@linuxfoundation.org> References: <20240411095435.633465671@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Roberto Sassu [ Upstream commit ac02f007d64eb2769d0bde742aac4d7a5fc6e8a5 ] If the SMACK64TRANSMUTE xattr is provided, and the inode is a directory, update the in-memory inode flags by setting SMK_INODE_TRANSMUTE. Cc: stable@vger.kernel.org Fixes: 5c6d1125f8db ("Smack: Transmute labels on specified directories") # v2.6.38.x Signed-off-by: Roberto Sassu Signed-off-by: Casey Schaufler Signed-off-by: Sasha Levin --- security/smack/smack_lsm.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 0be25e05c1a03..750f6007bbbb0 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2722,6 +2722,15 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name, if (value == NULL || size > SMK_LONGLABEL || size == 0) return -EINVAL; + if (strcmp(name, XATTR_SMACK_TRANSMUTE) == 0) { + if (!S_ISDIR(inode->i_mode) || size != TRANS_TRUE_SIZE || + strncmp(value, TRANS_TRUE, TRANS_TRUE_SIZE) != 0) + return -EINVAL; + + nsp->smk_flags |= SMK_INODE_TRANSMUTE; + return 0; + } + skp = smk_import_entry(value, size); if (IS_ERR(skp)) return PTR_ERR(skp); -- 2.43.0