From patchwork Mon May 27 07:58:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongbo Li X-Patchwork-Id: 13674763 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 6DAE23BB59; Mon, 27 May 2024 07:58:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716796705; cv=none; b=DnEMGgaodBCbtCUytUv47QNkTxxJkDP3lnxCZXAO751KqQDbx15LXhCVu2DqycKRrAFKyARic2FZRkV9guv4ndsLiyClKYkvbqJ8Da5K6KQuxFIZ0ZTzP05Txxt0HkDOXfZZ37uJWZntawbSZUI2EF/3mEVjFbtAEz11uH85Fwo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716796705; c=relaxed/simple; bh=2pQ8OpyCvyPiThTNccORsiIJoUK+PlaXD5ACjqKjx/4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rUFBaoDbgGS8WEkb+S/NrsaOxxoKTZkXewyKxqiTGCqz45CypkaTIjdowE/EUbUHzV/HkP6f7SWqzaCukmDy+kbPhrzGvcP0rRVzeeHfEdjvTs8nCa9FyU1GSLsBLnpFN9geYi9jRQBElevbrfklN7FoG4fD3wPHW5UqXMBZL/Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4VnnxT3wyVz1ysVv; Mon, 27 May 2024 15:55:09 +0800 (CST) Received: from dggpeml500022.china.huawei.com (unknown [7.185.36.66]) by mail.maildlp.com (Postfix) with ESMTPS id 894C81A0188; Mon, 27 May 2024 15:58:16 +0800 (CST) Received: from huawei.com (10.90.53.73) by dggpeml500022.china.huawei.com (7.185.36.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Mon, 27 May 2024 15:58:16 +0800 From: Hongbo Li To: , , , , CC: , , , , , Subject: [PATCH v2 4/4] fs: remove fs_lookup_param and its description. Date: Mon, 27 May 2024 15:58:54 +0800 Message-ID: <20240527075854.1260981-5-lihongbo22@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527075854.1260981-1-lihongbo22@huawei.com> References: <20240527075854.1260981-1-lihongbo22@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpeml500022.china.huawei.com (7.185.36.66) After `fs_param_is_blockdev` and `fs_param_is_path` are implemented, there are no need to lookup the path with `fs_lookup_param`, and `fs_parse` is sufficient. Signed-off-by: Hongbo Li --- Documentation/filesystems/mount_api.rst | 17 +------- fs/fs_parser.c | 56 ------------------------- include/linux/fs_parser.h | 6 --- 3 files changed, 1 insertion(+), 78 deletions(-) diff --git a/Documentation/filesystems/mount_api.rst b/Documentation/filesystems/mount_api.rst index 9aaf6ef75eb5..f92d96758e57 100644 --- a/Documentation/filesystems/mount_api.rst +++ b/Documentation/filesystems/mount_api.rst @@ -253,7 +253,7 @@ manage the filesystem context. They are as follows: will have been weeded out and fc->sb_flags updated in the context. Security options will also have been weeded out and fc->security updated. - The parameter can be parsed with fs_parse() and fs_lookup_param(). Note + The parameter can be parsed with fs_parse(). Note that the source(s) are presented as parameters named "source". If successful, 0 should be returned or a negative error code otherwise. @@ -796,18 +796,3 @@ process the parameters it is given. If the parameter isn't matched, -ENOPARAM will be returned; if the parameter is matched, but the value is erroneous, -EINVAL will be returned; otherwise the parameter's option number will be returned. - - * :: - - int fs_lookup_param(struct fs_context *fc, - struct fs_parameter *value, - bool want_bdev, - unsigned int flags, - struct path *_path); - - This takes a parameter that carries a string or filename type and attempts - to do a path lookup on it. If the parameter expects a blockdev, a check - is made that the inode actually represents one. - - Returns 0 if successful and ``*_path`` will be set; returns a negative - error code if not. diff --git a/fs/fs_parser.c b/fs/fs_parser.c index 5d0adcc514d8..962adb1fec80 100644 --- a/fs/fs_parser.c +++ b/fs/fs_parser.c @@ -133,62 +133,6 @@ int __fs_parse(struct p_log *log, } EXPORT_SYMBOL(__fs_parse); -/** - * fs_lookup_param - Look up a path referred to by a parameter - * @fc: The filesystem context to log errors through. - * @param: The parameter. - * @want_bdev: T if want a blockdev - * @flags: Pathwalk flags passed to filename_lookup() - * @_path: The result of the lookup - */ -int fs_lookup_param(struct fs_context *fc, - struct fs_parameter *param, - bool want_bdev, - unsigned int flags, - struct path *_path) -{ - struct filename *f; - bool put_f; - int ret; - - switch (param->type) { - case fs_value_is_string: - f = getname_kernel(param->string); - if (IS_ERR(f)) - return PTR_ERR(f); - put_f = true; - break; - case fs_value_is_filename: - f = param->name; - put_f = false; - break; - default: - return invalf(fc, "%s: not usable as path", param->key); - } - - ret = filename_lookup(param->dirfd, f, flags, _path, NULL); - if (ret < 0) { - errorf(fc, "%s: Lookup failure for '%s'", param->key, f->name); - goto out; - } - - if (want_bdev && - !S_ISBLK(d_backing_inode(_path->dentry)->i_mode)) { - path_put(_path); - _path->dentry = NULL; - _path->mnt = NULL; - errorf(fc, "%s: Non-blockdev passed as '%s'", - param->key, f->name); - ret = -ENOTBLK; - } - -out: - if (put_f) - putname(f); - return ret; -} -EXPORT_SYMBOL(fs_lookup_param); - static int fs_param_bad_value(struct p_log *log, struct fs_parameter *param) { return inval_plog(log, "Bad value for '%s'", param->key); diff --git a/include/linux/fs_parser.h b/include/linux/fs_parser.h index 489c71d06a5f..fa2745254818 100644 --- a/include/linux/fs_parser.h +++ b/include/linux/fs_parser.h @@ -74,12 +74,6 @@ static inline int fs_parse(struct fs_context *fc, return __fs_parse(&fc->log, desc, param, result); } -extern int fs_lookup_param(struct fs_context *fc, - struct fs_parameter *param, - bool want_bdev, - unsigned int flags, - struct path *_path); - extern int lookup_constant(const struct constant_table tbl[], const char *name, int not_found); #ifdef CONFIG_VALIDATE_FS_PARSER