util-linux/0002-Revert-libblkid-improve-handling-of-ISO-files-with-p.patch

From f0e3bafa74b36f63e30ceb533b0f4e0844238f5b Mon Sep 17 00:00:00 2001
From: Adam Williamson <awilliam@redhat.com>
Date: Thu, 12 Dec 2019 17:20:04 -0800
Subject: [PATCH 2/2] Revert "libblkid: improve handling of ISO files with
 partition tables"

This reverts commit 7ef86a08914427d6486734614d7d3bbed1f108fe.
---
 libblkid/src/superblocks/iso9660.c            |  37 ---------
 .../blkid/iso-partitions-no_partitions        |   9 ---
 .../expected/blkid/iso-partitions-partitions  |  25 ------
 tests/ts/blkid/iso-partitions                 |  71 ------------------
 tests/ts/blkid/iso-partitions.img.xz          | Bin 1188 -> 0 bytes
 5 files changed, 142 deletions(-)
 delete mode 100644 tests/expected/blkid/iso-partitions-no_partitions
 delete mode 100644 tests/expected/blkid/iso-partitions-partitions
 delete mode 100755 tests/ts/blkid/iso-partitions
 delete mode 100644 tests/ts/blkid/iso-partitions.img.xz

diff --git a/libblkid/src/superblocks/iso9660.c b/libblkid/src/superblocks/iso9660.c
index 730939f70..8dc2e5394 100644
--- a/libblkid/src/superblocks/iso9660.c
+++ b/libblkid/src/superblocks/iso9660.c
@@ -13,7 +13,6 @@
  */
 #include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <unistd.h>
 #include <string.h>
 #include <stdint.h>
@@ -166,37 +165,6 @@ static int is_str_empty(const unsigned char *str, size_t len)
 	return 1;
 }
 
-/*
- * The ISO format specifically avoids the first 32kb to allow for a
- * partition table to be added, if desired.
- * When an ISO contains a partition table, the usual thing to do is to
- * have a partition that points at the iso filesystem. In such case,
- * we want to only probe the iso metadata for the corresponding partition
- * device, avoiding returning the metadata for the parent block device.
- */
-static bool isofs_belongs_to_device(blkid_probe pr)
-{
-	dev_t devno;
-	blkid_partlist ls;
-
-	/* Get device number, but if that fails, assume we aren't dealing
-	 * with partitions, and continue probing. */
-	devno = blkid_probe_get_devno(pr);
-	if (!devno)
-		return true;
-
-	/* Get partition table, but if that fails, assume we aren't dealing
-	 * with partitions, and continue probing. */
-	ls = blkid_probe_get_partitions(pr);
-	if (!ls)
-		return true;
-
-	/* Check that the device we're working with corresponds to an
-	 * entry in the partition table. If so, this is the correct
-	 * device to return the iso metadata on. */
-	return blkid_partlist_devno_to_partition(ls, devno) != NULL;
-}
-
 /* iso9660 [+ Microsoft Joliet Extension] */
 static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag)
 {
@@ -212,11 +180,6 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag)
 	if (!iso)
 		return errno ? -errno : 1;
 
-	/* Check if the iso metadata should be returned on a different device
-	 * instead of this one. */
-	if (!isofs_belongs_to_device(pr))
-		return 1;
-
 	memcpy(label, iso->volume_id, sizeof(label));
 
 	blkid_probe_set_block_size(pr, 2048);
diff --git a/tests/expected/blkid/iso-partitions-no_partitions b/tests/expected/blkid/iso-partitions-no_partitions
deleted file mode 100644
index dbfd57a34..000000000
--- a/tests/expected/blkid/iso-partitions-no_partitions
+++ /dev/null
@@ -1,9 +0,0 @@
-ID_FS_BLOCK_SIZE=2048
-ID_FS_PUBLISHER_ID=UTIL-LINUX
-ID_FS_UUID=2019-09-24-09-31-05-00
-ID_FS_UUID_ENC=2019-09-24-09-31-05-00
-ID_FS_VERSION=Joliet\x20Extension
-ID_FS_LABEL=ISOIMAGE
-ID_FS_LABEL_ENC=ISOIMAGE
-ID_FS_TYPE=iso9660
-ID_FS_USAGE=filesystem
diff --git a/tests/expected/blkid/iso-partitions-partitions b/tests/expected/blkid/iso-partitions-partitions
deleted file mode 100644
index e34ca39fc..000000000
--- a/tests/expected/blkid/iso-partitions-partitions
+++ /dev/null
@@ -1,25 +0,0 @@
-ID_PART_TABLE_TYPE=dos
---
-ID_FS_BLOCK_SIZE=2048
-ID_FS_PUBLISHER_ID=UTIL-LINUX
-ID_FS_UUID=2019-09-24-09-31-05-00
-ID_FS_UUID_ENC=2019-09-24-09-31-05-00
-ID_FS_VERSION=Joliet\x20Extension
-ID_FS_LABEL=ISOIMAGE
-ID_FS_LABEL_ENC=ISOIMAGE
-ID_FS_TYPE=iso9660
-ID_FS_USAGE=filesystem
-ID_PART_TABLE_TYPE=dos
-ID_PART_ENTRY_SCHEME=dos
-ID_PART_ENTRY_TYPE=0x83
-ID_PART_ENTRY_NUMBER=1
-ID_PART_ENTRY_OFFSET=0
-ID_PART_ENTRY_SIZE=136
-ID_PART_ENTRY_DISK=__ts_majorminor__
---
-ID_PART_ENTRY_SCHEME=dos
-ID_PART_ENTRY_TYPE=0xef
-ID_PART_ENTRY_NUMBER=2
-ID_PART_ENTRY_OFFSET=136
-ID_PART_ENTRY_SIZE=4096
-ID_PART_ENTRY_DISK=__ts_majorminor__
diff --git a/tests/ts/blkid/iso-partitions b/tests/ts/blkid/iso-partitions
deleted file mode 100755
index 02fdd4e50..000000000
--- a/tests/ts/blkid/iso-partitions
+++ /dev/null
@@ -1,71 +0,0 @@
-#!/bin/bash
-
-#
-# Copyright (C) 2019 Endless Mobile, Inc.
-#
-# This file is part of util-linux.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This file is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-
-TS_TOPDIR="${0%/*}/../.."
-TS_DESC="iso-partitions"
-
-. $TS_TOPDIR/functions.sh
-
-ts_init "$*"
-
-ts_check_test_command "$TS_CMD_BLKID"
-ts_check_test_command "$TS_CMD_PARTX"
-
-ts_skip_nonroot
-
-# set global variable TS_DEVICE
-ts_scsi_debug_init dev_size_mb=50
-
-# This image (created by xorriso) has partition 1 pointing to the ISO
-# area, followed by an unformatted second partition.
-xz -dc ${TS_SELF}/iso-partitions.img.xz > ${TS_DEVICE}
-udevadm settle
-
-ts_init_subtest "partitions"
-$TS_CMD_PARTX -a ${TS_DEVICE} &>/dev/null
-udevadm settle
-
-# Check that the ISO metadata is not shown on the main disk device
-$TS_CMD_BLKID -p -o udev ${TS_DEVICE} >> $TS_OUTPUT
-echo -- >> $TS_OUTPUT
-
-# Check that the ISO metadata is shown on the "ISO partition"
-$TS_CMD_BLKID -p -o udev ${TS_DEVICE}1 >> $TS_OUTPUT
-echo -- >> $TS_OUTPUT
-
-# Check that the ISO metadata is not shown on the other partition
-$TS_CMD_BLKID -p -o udev ${TS_DEVICE}2 >> $TS_OUTPUT
-
-# substitute major/minor number before comparison
-sed -i \
-  -e 's/^\(ID_PART_ENTRY_DISK\)=.*/\1=__ts_majorminor__/' \
-  $TS_OUTPUT
-
-ts_finalize_subtest
-
-# Remove the partition table and check that the ISO metadata is shown on the
-# main disk device.
-ts_init_subtest "no_partitions"
-dd if=/dev/zero of=${TS_DEVICE} bs=512 count=1 &>/dev/null
-udevadm settle
-$TS_CMD_PARTX -d ${TS_DEVICE} &>/dev/null
-udevadm settle
-$TS_CMD_BLKID -p -o udev ${TS_DEVICE} >> $TS_OUTPUT
-ts_finalize_subtest
-
-ts_finalize

-- 
2.24.0