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[PATCH] tests: write all pairs of partition table types

From: Jim Meyering
Subject: [PATCH] tests: write all pairs of partition table types
Date: Wed, 11 May 2011 08:19:12 +0200

I wrote this a long time ago, back when I noticed
that writing some time of partition table would segfault
but only if the table being overwritten was of some other type.
Since then, I've changed how "clobbering" works, so there is
far less risk of such a problem, but I'm adding the test regardless.

>From e585d1279131c468f271f1a602ba72af66dfc98b Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Sat, 19 Sep 2009 08:23:40 +0200
Subject: [PATCH] tests: write all pairs of partition table types

* tests/t9050-partition-table-types.sh: New file.
* tests/Makefile.am (TESTS): Add it.
 tests/Makefile.am                    |    3 +-
 tests/t9050-partition-table-types.sh |   51 ++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 1 deletions(-)
 create mode 100755 tests/t9050-partition-table-types.sh

diff --git a/tests/Makefile.am b/tests/Makefile.am
index df9711c..f5a1562 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -48,7 +48,8 @@ TESTS = \
   t9021-maxima.sh \
   t9030-align-check.sh \
   t9040-many-partitions.sh \
-  t9041-undetected-in-use-16th-partition.sh
+  t9041-undetected-in-use-16th-partition.sh \
+  t9050-partition-table-types.sh

   $(TESTS) lvm-utils.sh t-local.sh t-lvm.sh \
diff --git a/tests/t9050-partition-table-types.sh 
new file mode 100755
index 0000000..98acc63
--- /dev/null
+++ b/tests/t9050-partition-table-types.sh
@@ -0,0 +1,51 @@
+# Ensure that any combination of partition table types works.
+# I.e., write a partition table of type T, and then overwrite it
+# with one of type V, for every permutation of T and V.
+# Copyright (C) 2011 Free Software Foundation, Inc.
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# GNU General Public License for more details.
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+. "${srcdir=.}/init.sh"; path_prepend_ ../parted
+dd if=/dev/null of=f bs=1 seek=3M || framework_failure_
+for i in $types; do
+  for j in $types; do
+    echo $i:$j
+    case $i in mkswap) mkswap f >/dev/null 2>&1 || fail=1;;
+      *) parted -s f mklabel $i || fail=1;; esac
+    case $j in mkswap) continue;; esac
+    parted -s f mklabel $j || fail=1
+  done
+Exit $fail

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