[parted-devel] [PATCH 1/2] tests: Make sure the extended partition length is correct (#1135493)

[Brian C. Lane]

parted tells the kernel the wrong length when reporting a resize of an
extended partition. Make sure the length is 2 for 512b sectors and 1
sector for larger.
---
 tests/Makefile.am                     |  1 +
 tests/t2320-dos-extended-noclobber.sh | 48 +++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 tests/t2320-dos-extended-noclobber.sh

diff --git a/tests/Makefile.am b/tests/Makefile.am
index ce8391d..001b9de 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -47,6 +47,7 @@ TESTS = \
   t2201-pc98-label-recog.sh \
   t2300-dos-label-extended-bootcode.sh \
   t2310-dos-extended-2-sector-min-offset.sh \
+  t2320-dos-extended-noclobber.sh \
   t2400-dos-hfs-partition-type.sh \
   t2500-probe-corrupt-hfs.sh \
   t3000-resize-fs.sh \
diff --git a/tests/t2320-dos-extended-noclobber.sh b/tests/t2320-dos-extended-noclobber.sh
new file mode 100644
index 0000000..6f3dfff
--- /dev/null
+++ b/tests/t2320-dos-extended-noclobber.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+# Ensure that the extended partition reports the correct length
+# after adding another partition.
+
+# Copyright (C) 2015 Free Software Foundation, Inc.
+
+# This program 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 3 of the License, or
+# (at your option) any later version.
+
+# This program 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.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../parted
+
+require_root_
+require_scsi_debug_module_
+
+# create memory-backed device
+ss=$sector_size_
+scsi_debug_setup_ sector_size=$ss dev_size_mb=10 > dev-name ||
+  skip_ 'failed to create scsi_debug device'
+scsi_dev=$(cat dev-name)
+
+# Create a DOS label with an extended partition and a primary partition
+parted -s $scsi_dev mklabel msdos || fail=1
+parted -s $scsi_dev mkpart extended 1 5 > out 2>&1 || fail=1
+parted -s $scsi_dev mkpart primary 5 10 > out 2>&1 || fail=1
+
+# Make sure the size of the extended partition is correct.
+# 2 sectors for 512b and 1 sector for larger. /sys/.../size is in
+# 512b blocks so convert accordingly.
+dev=${scsi_dev#/dev/}
+ext_len=$(cat /sys/block/$dev/${dev}1/size)
+if [ $ss -eq 512 ]; then
+    expected_len=2
+else
+    expected_len=$((ss / 512))
+fi
+[ $ext_len -eq $expected_len ] || fail=1
+
+Exit $fail
-- 
2.4.3