#!/bin/sh
#
# Check mmap/mmap2, madvise, mlockall, mprotect, mremap, msync, and munmap
# syscalls decoding.
#
# Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
#    derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

. "${srcdir=.}/init.sh"

check_prog grep
check_prog sed
run_prog > /dev/null

syscall=
for n in mmap mmap2; do
	$STRACE -e$n -h > /dev/null && syscall=$syscall,$n
done
run_strace -e$syscall $args > /dev/null

if grep '^mmap(NULL, 0, PROT_NONE,' < "$LOG" > /dev/null; then
	mmap=mmap
elif grep '^mmap2(NULL, 0, PROT_NONE,' < "$LOG" > /dev/null; then
	mmap=mmap2
else
	dump_log_and_fail_with "mmap/mmap2 not found in $STRACE $args output"
fi

syscall=$mmap,madvise,mlockall,mprotect,mremap,msync,munmap

run_prog "./$NAME" $mmap > /dev/null
run_strace -a20 -e$syscall $args > "$EXP"
sed -n "/^$mmap(NULL, 0, PROT_NONE,/,\$p" < "$LOG" > "$OUT"
match_diff "$OUT" "$EXP"

rm -f "$EXP" "$OUT"