strace/tests/mmap.test

#!/bin/sh
#
# Check mmap/mmap2, madvise, mlockall, mprotect, mremap, msync, and munmap
# syscalls decoding.
#
# Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
# Copyright (c) 2015-2018 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later

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

check_prog grep
check_prog sed
run_prog > /dev/null

xlat_opt=""
[ "$#" -gt 0 ] && xlat_opt="-X$1"
align=20
[ "$#" -gt 1 ] && align="$2"

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, \(0 /* PROT_NONE */\|0\|PROT_NONE\),' < "$LOG" > /dev/null; then
	mmap=mmap
elif grep '^mmap2(NULL, 0, \(0 \/\* PROT_NONE \*\/\|0\|PROT_NONE\),' < "$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" $mmap > /dev/null
run_strace -a$align -e$syscall $xlat_opt $args > "$EXP"
sed -n "/^$mmap(NULL, 0, \(0 \/\* PROT_NONE \*\/\|0\|PROT_NONE\),/,\$p" < "$LOG" > "$OUT"
match_diff "$OUT" "$EXP"