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 C7DFB18EFF9; Mon, 28 Oct 2024 06:35:16 +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=1730097316; cv=none; b=VIWR9I6ToQLlgKhJPqBkcY+RnlNBx6wqSTmrWlcZaYktw4WyW17V93bkeNRRmhbxLndsQqD7+CecVCDU73Dg/6vTuapPlBjlRCUT+gdmZBftWKJlS1O99pzZQZv5xNgLi+KSywu7s9+SRnDWMrsruKDbfFsUCM2Ni6SqvRpmxJY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730097316; c=relaxed/simple; bh=94bVQFD41BAwdb4KSkYZq4SDExo+n1UmHdcYZUZujhA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HmMwiS2+qJ/6kru1DVLa7GkOgxuEP88wFOQqUpMLiEAPDtzrlfzgRZ0qS70gy2uqZOUtQQVGV0FZAfMuDNnfN73KbZAdxqJtRU0vD0vaDy3j8CjANz/vBZDyJb+SOp16ifs0R/wDIjrJC5kMlYZ79XyPBZ60Lh/wx2xSIhCkihM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GT3wysFQ; 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="GT3wysFQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66AA7C4CEC3; Mon, 28 Oct 2024 06:35:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1730097316; bh=94bVQFD41BAwdb4KSkYZq4SDExo+n1UmHdcYZUZujhA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GT3wysFQutZ+DDz6/TE/gY22LO3FyIgynLph+TjUHvVOYLNoil46O14R5O6w2QM5x 2t+G4daXYF8EPlTR73vnnY2OzCFMPID9OjuEQaBgO3kNNO6Fwf65tbSDJ4W5cCwUh/ +2El8pnxcFabvZB4j12/1UuDGRNHqvxZcQUwDSeM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhao Mengmeng , Jan Kara , Sasha Levin Subject: [PATCH 6.1 078/137] udf: refactor udf_current_aext() to handle error Date: Mon, 28 Oct 2024 07:25:15 +0100 Message-ID: <20241028062300.915856329@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241028062258.708872330@linuxfoundation.org> References: <20241028062258.708872330@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ 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 77471e33ccf75..fac28caca356a 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1838,6 +1838,7 @@ 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); @@ -1882,10 +1883,12 @@ 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); @@ -1900,6 +1903,9 @@ int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, *epos = nepos; return 0; +err_out: + brelse(bh); + return err; } /* @@ -2050,9 +2056,12 @@ 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) { @@ -2073,14 +2082,17 @@ 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; @@ -2107,8 +2119,8 @@ 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; @@ -2117,17 +2129,17 @@ 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 036ebd892b852..f0de6e106ce65 100644 --- a/fs/udf/truncate.c +++ b/fs/udf/truncate.c @@ -192,6 +192,7 @@ 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); @@ -221,8 +222,8 @@ 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) { @@ -257,6 +258,11 @@ 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 d35aa42bb5777..1d19434d4a47c 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -174,8 +174,9 @@ 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