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 A1FFC1E47C9; Mon, 21 Oct 2024 10:40:58 +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=1729507258; cv=none; b=t8MmRlw7Uyl1MksoYaPrx4SSX7cSkgoxYooKe6azPb+iQbVVaM8Abu6N1olN0aVqCiOiAuC0GZg9xpZDl/n1OPdI3WqgYydl4xjVfRbN28zJYP7R1Knwsq4ZlJ+204Fa4zdR+j3dbyg4rCF/sQpLvdwVUAhcF2j4PFf2sfKQS58= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729507258; c=relaxed/simple; bh=jsi1UiDf6PqzxyOYMy6TI6u140pgoC0P2gnNIRyQLU8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fF6Y1xUIP64+FH3w/Rv/FtvXtdVer5pQHJoVMyppo/+6uD33a/Cpen58RTE+C1z8oUJRy5WGSqOOwaYuGQZQUN1NS+crkqzyDY0c/EZHROF1ummqO6XeBJ2DbMq5YTg1+PxxB5U4fGU7dN8EvkeAHQqJHUm/m2eRwHpyNvS7WTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Apq579h/; 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="Apq579h/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17222C4CEE5; Mon, 21 Oct 2024 10:40:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1729507258; bh=jsi1UiDf6PqzxyOYMy6TI6u140pgoC0P2gnNIRyQLU8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Apq579h/j30Z97Ml+QrS7eVchKRCrRqydxKV9qksl+klUuIiArA/74pdB1k+mfyXp BcHaLen7oxG9ty99Xoo4tdNnxC7Pr9OHasNyMjzqnP58xhGxp3XO3X7ZQi6dUKn+zA AXAad5rbU3T1sIBnoRPTI6lW8UeA3rJJ9xSgV0DA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jan Kara , Thadeu Lima de Souza Cascardo Subject: [PATCH 6.1 18/91] udf: Implement adding of dir entries using new iteration code Date: Mon, 21 Oct 2024 12:24:32 +0200 Message-ID: <20241021102250.525671494@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241021102249.791942892@linuxfoundation.org> References: <20241021102249.791942892@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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Kara [ Upstream commit f2844803404d9729f893e279ddea12678710e7fb ] Implement function udf_fiiter_add_entry() adding new directory entries using new directory iteration code. Signed-off-by: Jan Kara Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: Greg Kroah-Hartman --- fs/udf/directory.c | 57 +++++++++++++++++++++++++++ fs/udf/namei.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/udf/udfdecl.h | 2 3 files changed, 169 insertions(+) --- a/fs/udf/directory.c +++ b/fs/udf/directory.c @@ -413,6 +413,63 @@ void udf_fiiter_write_fi(struct udf_file inode_inc_iversion(iter->dir); } +void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen) +{ + struct udf_inode_info *iinfo = UDF_I(iter->dir); + int diff = new_elen - iter->elen; + + /* Skip update when we already went past the last extent */ + if (!iter->elen) + return; + iter->elen = new_elen; + if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) + iter->epos.offset -= sizeof(struct short_ad); + else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) + iter->epos.offset -= sizeof(struct long_ad); + udf_write_aext(iter->dir, &iter->epos, &iter->eloc, iter->elen, 1); + iinfo->i_lenExtents += diff; + mark_inode_dirty(iter->dir); +} + +/* Append new block to directory. @iter is expected to point at EOF */ +int udf_fiiter_append_blk(struct udf_fileident_iter *iter) +{ + struct udf_inode_info *iinfo = UDF_I(iter->dir); + int blksize = 1 << iter->dir->i_blkbits; + struct buffer_head *bh; + sector_t block; + uint32_t old_elen = iter->elen; + int err; + + if (WARN_ON_ONCE(iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)) + return -EINVAL; + + /* Round up last extent in the file */ + udf_fiiter_update_elen(iter, ALIGN(iter->elen, blksize)); + + /* Allocate new block and refresh mapping information */ + block = iinfo->i_lenExtents >> iter->dir->i_blkbits; + bh = udf_bread(iter->dir, block, 1, &err); + if (!bh) { + udf_fiiter_update_elen(iter, old_elen); + return err; + } + if (inode_bmap(iter->dir, block, &iter->epos, &iter->eloc, &iter->elen, + &iter->loffset) != (EXT_RECORDED_ALLOCATED >> 30)) { + udf_err(iter->dir->i_sb, + "block %llu not allocated in directory (ino %lu)\n", + (unsigned long long)block, iter->dir->i_ino); + return -EFSCORRUPTED; + } + if (!(iter->pos & (blksize - 1))) { + brelse(iter->bh[0]); + iter->bh[0] = bh; + } else { + iter->bh[1] = bh; + } + return 0; +} + struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos, struct udf_fileident_bh *fibh, struct fileIdentDesc *cfi, --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -472,6 +472,116 @@ static struct buffer_head *udf_expand_di return dbh; } +static int udf_fiiter_add_entry(struct inode *dir, struct dentry *dentry, + struct udf_fileident_iter *iter) +{ + struct udf_inode_info *dinfo = UDF_I(dir); + int nfidlen, namelen = 0; + int ret; + int off, blksize = 1 << dir->i_blkbits; + udf_pblk_t block; + char name[UDF_NAME_LEN_CS0]; + + if (dentry) { + if (!dentry->d_name.len) + return -EINVAL; + namelen = udf_put_filename(dir->i_sb, dentry->d_name.name, + dentry->d_name.len, + name, UDF_NAME_LEN_CS0); + if (!namelen) + return -ENAMETOOLONG; + } + nfidlen = ALIGN(sizeof(struct fileIdentDesc) + namelen, UDF_NAME_PAD); + + for (ret = udf_fiiter_init(iter, dir, 0); + !ret && iter->pos < dir->i_size; + ret = udf_fiiter_advance(iter)) { + if (iter->fi.fileCharacteristics & FID_FILE_CHAR_DELETED) { + if (udf_dir_entry_len(&iter->fi) == nfidlen) { + iter->fi.descTag.tagSerialNum = cpu_to_le16(1); + iter->fi.fileVersionNum = cpu_to_le16(1); + iter->fi.fileCharacteristics = 0; + iter->fi.lengthFileIdent = namelen; + iter->fi.lengthOfImpUse = cpu_to_le16(0); + memcpy(iter->namebuf, name, namelen); + iter->name = iter->namebuf; + return 0; + } + } + } + if (ret) { + udf_fiiter_release(iter); + return ret; + } + if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB && + blksize - udf_ext0_offset(dir) - iter->pos < nfidlen) { + struct buffer_head *retbh; + + udf_fiiter_release(iter); + /* + * FIXME: udf_expand_dir_adinicb does not need to return bh + * once other users are gone + */ + retbh = udf_expand_dir_adinicb(dir, &block, &ret); + if (!retbh) + return ret; + brelse(retbh); + ret = udf_fiiter_init(iter, dir, dir->i_size); + if (ret < 0) + return ret; + } + + /* Get blocknumber to use for entry tag */ + if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { + block = dinfo->i_location.logicalBlockNum; + } else { + block = iter->eloc.logicalBlockNum + + ((iter->elen - 1) >> dir->i_blkbits); + } + off = iter->pos & (blksize - 1); + if (!off) + off = blksize; + /* Entry fits into current block? */ + if (blksize - udf_ext0_offset(dir) - off >= nfidlen) + goto store_fi; + + ret = udf_fiiter_append_blk(iter); + if (ret) { + udf_fiiter_release(iter); + return ret; + } + + /* Entry will be completely in the new block? Update tag location... */ + if (!(iter->pos & (blksize - 1))) + block = iter->eloc.logicalBlockNum + + ((iter->elen - 1) >> dir->i_blkbits); +store_fi: + memset(&iter->fi, 0, sizeof(struct fileIdentDesc)); + if (UDF_SB(dir->i_sb)->s_udfrev >= 0x0200) + udf_new_tag((char *)(&iter->fi), TAG_IDENT_FID, 3, 1, block, + sizeof(struct tag)); + else + udf_new_tag((char *)(&iter->fi), TAG_IDENT_FID, 2, 1, block, + sizeof(struct tag)); + iter->fi.fileVersionNum = cpu_to_le16(1); + iter->fi.lengthFileIdent = namelen; + iter->fi.lengthOfImpUse = cpu_to_le16(0); + memcpy(iter->namebuf, name, namelen); + iter->name = iter->namebuf; + + dir->i_size += nfidlen; + if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { + dinfo->i_lenAlloc += nfidlen; + } else { + /* Truncate last extent to proper size */ + udf_fiiter_update_elen(iter, iter->elen - + (dinfo->i_lenExtents - dir->i_size)); + } + mark_inode_dirty(dir); + + return 0; +} + static struct fileIdentDesc *udf_add_entry(struct inode *dir, struct dentry *dentry, struct udf_fileident_bh *fibh, --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -264,6 +264,8 @@ int udf_fiiter_init(struct udf_fileident int udf_fiiter_advance(struct udf_fileident_iter *iter); void udf_fiiter_release(struct udf_fileident_iter *iter); void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse); +void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen); +int udf_fiiter_append_blk(struct udf_fileident_iter *iter); extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *, struct udf_fileident_bh *, struct fileIdentDesc *,