android13/external/ltp/testcases/kernel/fs/linktest/linktest.sh

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) International Business Machines Corp., 2000
# Copyright (c) Linux Test Project, 2012-2019
# Regression test for max links per file
# Author: Ngie Cooper <yaneurabeya@gmail.com>
TST_NEEDS_TMPDIR=1
TST_TESTFUNC=do_test
TST_OPTS="a:s:"
TST_PARSE_ARGS=parse_args
TST_USAGE=usage
. tst_test.sh
hard_links=1000
soft_links=1000
usage()
{
echo "Usage: linktest.sh {-a n} {-s n}"
echo "-a n Hard link count"
echo "-s n Soft link count"
}
parse_args()
{
tst_is_int "$2" || tst_brk TBROK "-$1 must be integer ($2)"
[ "$2" -ge 0 ] || tst_brk TBROK "-$1 must be >= 0 ($2)"
case $1 in
a) hard_links=$2;;
s) soft_links=$2;;
esac
}
do_link()
{
local prefix="$1"
local ln_opts="$2"
local limit="$3"
local prefix_msg="$4"
local lerrors=0
local i=0
local rtype="TFAIL"
tst_res TINFO "test $prefix_msg link, limit: $limit"
cd "${prefix}link.$$"
while [ $i -lt $limit ]; do
if ! ln $ln_opts "$PWD/${prefix}file" ${prefix}file${i}; then
lerrors=$((lerrors + 1))
fi
i=$((i + 1))
done
cd ..
[ $lerrors -eq 0 ] && rtype="TPASS"
tst_res $rtype "errors: $lerrors"
}
do_test()
{
mkdir hlink.$$ slink.$$
touch hlink.$$/hfile slink.$$/sfile
do_link "s" "-s" $soft_links "symbolic"
do_link "h" "" $hard_links "hard"
rm -rf hlink.$$ slink.$$
}
tst_run