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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
#
# FS QA Test No. 005
#
# Test symlinks & ELOOP
#
#
# Note: On Linux, ELOOP limit used to be 32 but changed to 8, and lately
# its become 5. Who knows what it might be next.
#
# What we are looking for here is: no panic due to blowing the stack;
# and that the ELOOP error code is returned at some point (the actual
# limit point is unimportant, just checking that we do hit it).
#
. ./common/preamble
_begin_fstest dir udf auto quick
status=0 # success is the default!
# Override the default cleanup function.
_cleanup()
{
cd $TEST_DIR
rm -f symlink_{0,1,2,3,4}{0,1,2,3,4,5,6,7,8,9} symlink_self empty_file
cd /
}
_touch()
{
touch $@ 2>&1 | grep -q 'Too many levels of symbolic links'
if [ $? -eq 0 ]; then
echo "ELOOP returned. Good."
else
echo "No ELOOP? Unexpected!"
fi
}
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs generic
_require_test
_require_symlinks
cd $TEST_DIR
o=empty_file
touch $o
for f in symlink_{0,1,2,3,4}{0,1,2,3,4,5,6,7,8,9}
do
ln -s $o $f
o=$f
done
ln -s symlink_self symlink_self
echo "*** touch deep symlinks"
echo ""
_touch symlink_{0,1,2,3,4}{0,1,2,3,4,5,6,7,8,9}
echo ""
echo "*** touch recusive symlinks"
echo ""
_touch symlink_self
exit
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