tail: add another test to exercise abort-inducing flaw in tail -F

* tests/tail-2/inotify-hash-abuse2: New test, based on a reproducer
by Rob Wortman.
* tests/Makefile.am (TESTS): Add it.

1 files changed, 50 insertions, 0 deletions

diff --git a/tests/tail-2/inotify-hash-abuse2 b/tests/tail-2/inotify-hash-abuse2
new file mode 100755
index 000000000..2f59eb4d5
--- /dev/null
+++ b/tests/tail-2/inotify-hash-abuse2
@@ -0,0 +1,50 @@
+#!/bin/sh
+# Exercise an abort-inducing flaw in inotify-enabled tail -F.
+# Like inotify-hash-abuse, but without a hard-coded "9".
+
+# Copyright (C) 2009 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/>.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  tail --version
+fi
+
+. $srcdir/test-lib.sh
+
+touch f || framework_failure
+
+debug='---disable-inotify -s .001'
+debug=
+timeout 10 tail $debug -F f & pid=$!
+
+for i in $(seq 200); do
+  kill -0 $pid || break;
+  mv f g
+  touch f
+done
+
+# Fixed tail will not have aborted.  Kill it.
+kill -HUP $pid
+
+wait $pid
+st=$?
+
+case $st in
+  129) ;;
+  *) echo tail died via unexpected signal: $st; fail=1;;
+esac
+
+Exit $fail