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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) Linux Test Project, 2002-2023
# Copyright (c) 2016-2018 Oracle and/or its affiliates. All Rights Reserved.
# Copyright (c) International Business Machines Corp., 2001
#
# PURPOSE:
# Two processes open FLOCK_IDATA file simultaneously
# each one locks odd and even lines of the file simultaneously
# and fill them with '0's and '1's. After they find eof, the
# datafiles are compared.
TST_SETUP="do_setup"
TST_TESTFUNC="do_test"
NCHARS=${NCHARS:-64}
NLINES=${NLINES:-16384}
generate_file()
{
local file="$1"
local nchars="$2"
local nlines="$3"
local val="$4"
local exp_size="$((nchars*nlines))"
local size
ROD nfs_flock_dgen $file $nchars $nlines $val
size="$(wc -c $file | awk '{print $1}')"
if [ $size -ne $exp_size ]; then
tst_brk TBROK "could not create '$file' (size: $size, expected: $exp_size)"
fi
}
do_setup()
{
if ! tst_is_int $NCHARS || [ $NCHARS -lt 1 ]; then
tst_res TBROK "NCHARS must be > 0"
fi
if ! tst_is_int $NLINES || [ $NLINES -lt 1 ]; then
tst_res TBROK "NLINES must be > 0"
fi
nfs_setup
tst_res TINFO "creating test files (chars: $NCHARS, lines: $NLINES)"
generate_file flock_data $NCHARS $NLINES 0
generate_file flock_odata $NCHARS $NLINES 1
}
do_test()
{
tst_res TINFO "Testing locking"
ROD cp flock_data flock_idata
tst_res TINFO "locking 'flock_idata' file and writing data"
nfs_flock 0 flock_idata $NCHARS $NLINES &
local pids=$!
nfs_flock 1 flock_idata $NCHARS $NLINES &
pids="$pids $!"
tst_res TINFO "waiting for pids: $pids"
for p in $pids; do
wait $p
if [ $? -ne 0 ]; then
tst_brk TFAIL "nfs_lock process failed"
else
tst_res TINFO "$p completed"
fi
done
diff flock_odata flock_idata
if [ $? -ne 0 ]; then
tst_res TFAIL "content is different"
else
tst_res TPASS "content is the same"
fi
}
. nfs_lib.sh
tst_run
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