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 9EF5B13DDDD; Thu, 11 Apr 2024 09:58:30 +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=1712829511; cv=none; b=In0juru71AdUgjdZhKLcPEW2GqEUfoUuNbl/Z2d6YFgPrDCqtheU4aS9Sd1pMhoA5TWmT5VJcr0D9OIqLqbnmBYpcyEWpbahZ8IfbNjh9qcxrvCRGjKgeHX0MYxMzB6ajDrLMZ+IpTE0Q3N9UwK78bCFDpZLFJZaOcENYCgX8Xs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712829511; c=relaxed/simple; bh=tSM6KvUdogG9SEdJA3o3LWBs4JkWb3q2Fhtw1eRxRIA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BICDhnfdRUxR04S4sgd9M2QTri5wp8NWTAPYTCT6P6VkmijmJeDjc7MRIe7HJ8DS88DNMDiuNKyDuxpiyMKnBJxThYyaDG2QJzTiDXWb7pUxcyTxTJytwUtoBc0xXzl9TFZP5htpGygJd+54KYDVF4+DhJivq86AH7QpFXxxfBY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=CRDi7JQW; 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="CRDi7JQW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 350D2C433F1; Thu, 11 Apr 2024 09:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712829510; bh=tSM6KvUdogG9SEdJA3o3LWBs4JkWb3q2Fhtw1eRxRIA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CRDi7JQWYzxuGrN4obfX5AzdEIhBObrwWC0uvLMQ8XeNG9H252nl5h8W9340Mk/pp 1qsQ+m9wQSi0cBtXwfGB+HN3dpX0QdpLw1T5mQSSQ39hOfSa+mcPfUqCngr5R4IuTj 05B0j78WeH0GQXwXgogQgOOlFGSCnS29/wO9ujRc= 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 4.19 012/175] smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity() Date: Thu, 11 Apr 2024 11:53:55 +0200 Message-ID: <20240411095419.913953001@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240411095419.532012976@linuxfoundation.org> References: <20240411095419.532012976@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 4.19-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 2f2dc49f53dff..d9bff4ba7f2e8 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2802,6 +2802,15 @@ 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