From patchwork Tue Jul 26 05:22:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 1660559 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256 header.s=susede1 header.b=r67x0JW4; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LsQLY2x31z9sB4 for ; Tue, 26 Jul 2022 15:23:49 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 84FFA84131; Tue, 26 Jul 2022 07:22:59 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=suse.com header.i=@suse.com header.b="r67x0JW4"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 1228E84106; Tue, 26 Jul 2022 07:22:55 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 0F8BF8416E for ; Tue, 26 Jul 2022 07:22:52 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=wqu@suse.com Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id D48C434BB2; Tue, 26 Jul 2022 05:22:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1658812971; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2nhzVVuKofriwbmEVC76SfMev9B/InrAWOCi8ssri1I=; b=r67x0JW4GMwUUN9tLcG1aYFZZQmNDBKjGgeWO7jv2KniUuAdKq/ELP9HmznQprT9d+tjPu 3LS4XWVAIBYIr3cZjuFHje1cQzpYngDmUNqhuAZ5svAqNz51suPvQdUvIuboP+PgCZZn2q Q0MFzaY7Wg2GdCrMfOTQvPrV+PCxpn0= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 7724213A12; Tue, 26 Jul 2022 05:22:49 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 0KpeEil632IFOwAAMHmgww (envelope-from ); Tue, 26 Jul 2022 05:22:49 +0000 From: Qu Wenruo To: u-boot@lists.denx.de Cc: marek.behun@nic.cz, linux-btrfs@vger.kernel.org, jnhuang95@gmail.com, linux-erofs@lists.ozlabs.org, trini@konsulko.com, joaomarcos.costa@bootlin.com, thomas.petazzoni@bootlin.com, miquel.raynal@bootlin.com Subject: [PATCH v2 5/8] fs: ext4: rely on _fs_read() to handle leading unaligned block read Date: Tue, 26 Jul 2022 13:22:13 +0800 Message-Id: X-Mailer: git-send-email 2.37.0 In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean Just add ext4_get_blocksize() and a new assert() in ext4fs_read_file(). Signed-off-by: Qu Wenruo --- fs/ext4/ext4fs.c | 22 ++++++++++++++++++++++ fs/fs.c | 2 +- include/ext4fs.h | 1 + 3 files changed, 24 insertions(+), 1 deletion(-) diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c index 4c89152ce4ad..b0568e77a895 100644 --- a/fs/ext4/ext4fs.c +++ b/fs/ext4/ext4fs.c @@ -69,6 +69,8 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, short status; struct ext_block_cache cache; + assert(IS_ALIGNED(pos, blocksize)); + ext_cache_init(&cache); /* Adjust len so it we can't read past the end of the file. */ @@ -259,6 +261,26 @@ int ext4_read_file(const char *filename, void *buf, loff_t offset, loff_t len, return ext4fs_read(buf, offset, len, len_read); } +int ext4_get_blocksize(const char *filename) +{ + struct ext_filesystem *fs; + int log2blksz; + int log2_fs_blocksize; + loff_t file_len; + int ret; + + ret = ext4fs_open(filename, &file_len); + if (ret < 0) { + printf("** File not found %s **\n", filename); + return -1; + } + fs = get_fs(); + log2blksz = fs->dev_desc->log2blksz; + log2_fs_blocksize = LOG2_BLOCK_SIZE(ext4fs_file->data) - log2blksz; + + return (1 << (log2_fs_blocksize + log2blksz)); +} + int ext4fs_uuid(char *uuid_str) { if (ext4fs_root == NULL) diff --git a/fs/fs.c b/fs/fs.c index 1e9f778e1f11..3d6cc6b38b26 100644 --- a/fs/fs.c +++ b/fs/fs.c @@ -236,7 +236,7 @@ static struct fstype_info fstypes[] = { .exists = ext4fs_exists, .size = ext4fs_size, .read = ext4_read_file, - .get_blocksize = fs_get_blocksize_unsupported, + .get_blocksize = ext4_get_blocksize, #ifdef CONFIG_CMD_EXT4_WRITE .write = ext4_write_file, .ln = ext4fs_create_link, diff --git a/include/ext4fs.h b/include/ext4fs.h index cb5d9cc0a5c0..0f4cf32dcc2a 100644 --- a/include/ext4fs.h +++ b/include/ext4fs.h @@ -161,6 +161,7 @@ int ext4fs_probe(struct blk_desc *fs_dev_desc, struct disk_partition *fs_partition); int ext4_read_file(const char *filename, void *buf, loff_t offset, loff_t len, loff_t *actread); +int ext4_get_blocksize(const char *filename); int ext4_read_superblock(char *buffer); int ext4fs_uuid(char *uuid_str); void ext_cache_init(struct ext_block_cache *cache);