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 54CAE197A6A; Sat, 12 Oct 2024 11:26:34 +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=1728732394; cv=none; b=s1OE0AelsI42xI/G3HxgxxC/RDANoOCDcBILCOKLvlL4xHrpdL1T3uc3UlzZwCPAHdx8h6o5f7ksQfGBVDupm5Ccs74npDPNlWbbTXaBnj+/N0zHnz0DiSuCwKsR/9Qz9WBxXnHO9vdTCjiW/3Cq6n6NHuSeLbLoXXts7Q1nfjQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728732394; c=relaxed/simple; bh=zxAKMMdIqxL9YefAm6u+AhtgLghb/GgZUPvtgFgmYsg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WEPbLqYx2DF4tS1HQjxjAcYSf6GPPunUPmH63tZsDtRev2vWGG+UpNW5Y4d1VQRN6M3y8xgZePVuzzmX+no8gjH4V/MWqvD+VpEpdbf3yqgWvfzgDkNdiKpb8AqIJOthpQpD6LwkN8QoGiX4dVx4YysHKVF7WxIrpzQoFVvPz6I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uQPj3HUy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uQPj3HUy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73B4FC4CEC6; Sat, 12 Oct 2024 11:26:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728732394; bh=zxAKMMdIqxL9YefAm6u+AhtgLghb/GgZUPvtgFgmYsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uQPj3HUyJFyj+Xe67FB1CETT2UWQTk4xcyXiHrpozkEV0x1opvfWLHRfBGG/ETwKQ wNj4DaGSTgHRMq9vvr7lq2WEy4l+vHI8PuawiWQ16o1SxnnKqQqTsNigOhkeC56eSR tUAvtx9cEtOaevldtK2WB2GupkKUIt7MiguIFgeq7vD35mUDmwv3h2zqtWnw7BzFm9 kWSdVgsvmPrg/DO5durUZB6I31fhPFwhB2XNyICDo/B2UZLi8BjpCpEC/LxbBUyjNn UNI9u+VRr+9Jl4EMpEyenUO1Z7NIyCXlwuh2BjgJWODpySINvygAfOBM2QTlvIf1kA G8OXwbpkQRplg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhao Mengmeng , Jan Kara , Sasha Levin , jack@suse.com Subject: [PATCH AUTOSEL 6.11 07/16] udf: refactor udf_current_aext() to handle error Date: Sat, 12 Oct 2024 07:26:03 -0400 Message-ID: <20241012112619.1762860-7-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241012112619.1762860-1-sashal@kernel.org> References: <20241012112619.1762860-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.11.3 Content-Transfer-Encoding: 8bit From: Zhao Mengmeng [ Upstream commit ee703a7068f95764cfb62b57db1d36e465cb9b26 ] As Jan suggested in links below, refactor udf_current_aext() to differentiate between error, hit EOF and success, it now takes pointer to etype to store the extent type, return 1 when getting etype success, return 0 when hitting EOF and return -errno when err. Link: https://lore.kernel.org/all/20240912111235.6nr3wuqvktecy3vh@quack3/ Signed-off-by: Zhao Mengmeng Suggested-by: Jan Kara Signed-off-by: Jan Kara Link: https://patch.msgid.link/20241001115425.266556-2-zhaomzhao@126.com Signed-off-by: Sasha Levin --- fs/udf/inode.c | 40 ++++++++++++++++++++++++++-------------- fs/udf/truncate.c | 10 ++++++++-- fs/udf/udfdecl.h | 5 +++-- 3 files changed, 37 insertions(+), 18 deletions(-) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 4726a4d014b60..c64c2eff3399a 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1955,6 +1955,7 @@ int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, struct extent_position nepos; struct kernel_lb_addr neloc; int ver, adsize; + int err = 0; if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT) adsize = sizeof(struct short_ad); @@ -1999,10 +2000,12 @@ int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, if (epos->offset + adsize > sb->s_blocksize) { struct kernel_lb_addr cp_loc; uint32_t cp_len; - int cp_type; + int8_t cp_type; epos->offset -= adsize; - cp_type = udf_current_aext(inode, epos, &cp_loc, &cp_len, 0); + err = udf_current_aext(inode, epos, &cp_loc, &cp_len, &cp_type, 0); + if (err <= 0) + goto err_out; cp_len |= ((uint32_t)cp_type) << 30; __udf_add_aext(inode, &nepos, &cp_loc, cp_len, 1); @@ -2017,6 +2020,9 @@ int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, *epos = nepos; return 0; +err_out: + brelse(bh); + return err; } /* @@ -2167,9 +2173,12 @@ int8_t udf_next_aext(struct inode *inode, struct extent_position *epos, { int8_t etype; unsigned int indirections = 0; + int ret = 0; - while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) == - (EXT_NEXT_EXTENT_ALLOCDESCS >> 30)) { + while ((ret = udf_current_aext(inode, epos, eloc, elen, + &etype, inc)) > 0) { + if (etype != (EXT_NEXT_EXTENT_ALLOCDESCS >> 30)) + break; udf_pblk_t block; if (++indirections > UDF_MAX_INDIR_EXTS) { @@ -2190,14 +2199,17 @@ int8_t udf_next_aext(struct inode *inode, struct extent_position *epos, } } - return etype; + return ret > 0 ? etype : -1; } -int8_t udf_current_aext(struct inode *inode, struct extent_position *epos, - struct kernel_lb_addr *eloc, uint32_t *elen, int inc) +/* + * Returns 1 on success, -errno on error, 0 on hit EOF. + */ +int udf_current_aext(struct inode *inode, struct extent_position *epos, + struct kernel_lb_addr *eloc, uint32_t *elen, int8_t *etype, + int inc) { int alen; - int8_t etype; uint8_t *ptr; struct short_ad *sad; struct long_ad *lad; @@ -2224,8 +2236,8 @@ int8_t udf_current_aext(struct inode *inode, struct extent_position *epos, case ICBTAG_FLAG_AD_SHORT: sad = udf_get_fileshortad(ptr, alen, &epos->offset, inc); if (!sad) - return -1; - etype = le32_to_cpu(sad->extLength) >> 30; + return 0; + *etype = le32_to_cpu(sad->extLength) >> 30; eloc->logicalBlockNum = le32_to_cpu(sad->extPosition); eloc->partitionReferenceNum = iinfo->i_location.partitionReferenceNum; @@ -2234,17 +2246,17 @@ int8_t udf_current_aext(struct inode *inode, struct extent_position *epos, case ICBTAG_FLAG_AD_LONG: lad = udf_get_filelongad(ptr, alen, &epos->offset, inc); if (!lad) - return -1; - etype = le32_to_cpu(lad->extLength) >> 30; + return 0; + *etype = le32_to_cpu(lad->extLength) >> 30; *eloc = lelb_to_cpu(lad->extLocation); *elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK; break; default: udf_debug("alloc_type = %u unsupported\n", iinfo->i_alloc_type); - return -1; + return -EINVAL; } - return etype; + return 1; } static int udf_insert_aext(struct inode *inode, struct extent_position epos, diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c index a686c10fd709d..4758ba7b5f51c 100644 --- a/fs/udf/truncate.c +++ b/fs/udf/truncate.c @@ -188,6 +188,7 @@ int udf_truncate_extents(struct inode *inode) loff_t byte_offset; int adsize; struct udf_inode_info *iinfo = UDF_I(inode); + int ret = 0; if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) adsize = sizeof(struct short_ad); @@ -217,8 +218,8 @@ int udf_truncate_extents(struct inode *inode) else lenalloc -= sizeof(struct allocExtDesc); - while ((etype = udf_current_aext(inode, &epos, &eloc, - &elen, 0)) != -1) { + while ((ret = udf_current_aext(inode, &epos, &eloc, + &elen, &etype, 0)) > 0) { if (etype == (EXT_NEXT_EXTENT_ALLOCDESCS >> 30)) { udf_write_aext(inode, &epos, &neloc, nelen, 0); if (indirect_ext_len) { @@ -253,6 +254,11 @@ int udf_truncate_extents(struct inode *inode) } } + if (ret < 0) { + brelse(epos.bh); + return ret; + } + if (indirect_ext_len) { BUG_ON(!epos.bh); udf_free_blocks(sb, NULL, &epos.block, 0, indirect_ext_len); diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h index 88692512a4668..d893db95ac70e 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -171,8 +171,9 @@ extern void udf_write_aext(struct inode *, struct extent_position *, extern int8_t udf_delete_aext(struct inode *, struct extent_position); extern int8_t udf_next_aext(struct inode *, struct extent_position *, struct kernel_lb_addr *, uint32_t *, int); -extern int8_t udf_current_aext(struct inode *, struct extent_position *, - struct kernel_lb_addr *, uint32_t *, int); +extern int udf_current_aext(struct inode *inode, struct extent_position *epos, + struct kernel_lb_addr *eloc, uint32_t *elen, + int8_t *etype, int inc); extern void udf_update_extra_perms(struct inode *inode, umode_t mode); /* misc.c */ -- 2.43.0