Date: Mon, 27 Apr 2020 05:24:41 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r360365 - user/pho/stress2/misc Message-ID: <202004270524.03R5OfnT085084@repo.freebsd.org>
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Author: pho Date: Mon Apr 27 05:24:40 2020 New Revision: 360365 URL: https://svnweb.freebsd.org/changeset/base/360365 Log: Added a socketpair(2) test scenario. Added: user/pho/stress2/misc/socketpair4.sh (contents, props changed) Added: user/pho/stress2/misc/socketpair4.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/socketpair4.sh Mon Apr 27 05:24:40 2020 (r360365) @@ -0,0 +1,208 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2020 Peter Holm <pho@FreeBSD.org> +# +# 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. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. +# +# $FreeBSD$ +# + +# A socketpair() test scenario illustrating issues with a missing EOF + +. ../default.cfg +[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/socketpair4.c +mycc -o socketpair4 -Wall -Wextra -O0 -g socketpair4.c || exit 1 +rm -f socketpair4.c +cd $odir + +set -e +mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint +[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart +mdconfig -a -t swap -s 1g -u $mdstart +bsdlabel -w md$mdstart auto +newfs_flags="" +newfs $newfs_flags -n md$mdstart > /dev/null +mount /dev/md$mdstart $mntpoint +set +e + +cd $mntpoint +dd if=/dev/random of=input bs=4k count=100 status=none + +n=1 +start=` date +%s` +while [ $((` date +%s` - start)) -lt 180 ]; do + rm -f output + umount $mntpoint 2>/dev/null # busy umount + $dir/socketpair4 + s=$? + [ $s -ne 0 ] && { echo "Loop #$n"; ls -l; s=1; break; } + cmp -s input output || break + [ `stat -f '%z' input` -ne ` stat -f '%z' output` ] && break + n=$((n + 1)) +done +while pgrep -q swap; do + pkill swap +done +cmp -s input output || { echo "Loop #$n"; ls -l; s=1; } +[ -f socketpair4.core -a $s -eq 0 ] && + { ls -l socketpair4.core; mv socketpair4.core $dir; s=1; } +cd $odir + +for i in `jot 6`; do + mount | grep -q "on $mntpoint " || break + umount $mntpoint && break || sleep 10 + [ $i -eq 6 ] && + { echo FATAL; fstat -mf $mntpoint; exit 1; } +done +mdconfig -d -u $mdstart +rm -rf $dir/socketpair4 +exit $s + +EOF +#include <sys/param.h> +#include <sys/fcntl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/uio.h> +#include <sys/wait.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +static void +test(void) +{ + struct stat st; + off_t rd, written; + pid_t pid; + int error, from, n, status, sv[2], to; + char buf[4086]; + const char *from_name, *to_name; + + from_name = "input"; + to_name = "output"; + + if ((error = socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) == -1) + err(1, "socketpair"); + + if ((from = open(from_name, O_RDONLY)) == -1) + err(1, "open read %s", from_name); + + if ((error = fstat(from, &st)) == -1) + err(1, "stat %s", from_name); + + pid = fork(); + if (pid == -1) + err(1, "fork"); + else if (pid != 0) { + setproctitle("parent"); + close(sv[1]); + + written = 0; + for (;;) { + n = read(from, buf, sizeof(buf)); + if (n == -1) + err(1, "read(from)"); + else if (n == 0) + break; + written += n; + if (write(sv[0], buf, n) != n) + err(1, "write()"); + if (error == -1) + err(1, "write"); + } + if (written != st.st_size) + fprintf(stderr, "%d written, expected %d\n", + (int)written, (int)st.st_size); + close(from); + close(sv[0]); + if (waitpid(pid, &status, 0) != pid) + err(1, "waitpid(%d)", pid); + _exit(WEXITSTATUS(status)); + } else { + setproctitle("child"); + sleep(1); + close(from); + close(sv[0]); + + if ((to = open(to_name, O_RDWR | O_CREAT, DEFFILEMODE)) == -1) + err(1, "open write %s", to_name); + + rd = 0; + for (;;) { + n = read(sv[1], buf, sizeof(buf)); + if (n == -1) { + if (rd == st.st_size) { + err(1, "Expected EOF on read(socket)"); + break; + } + err(1, "read(socket), n=%d, rd=%d", n, + (int)rd); + } + if (n == 0) + break; + rd += n; + if (write(to, buf, n) != n) + err(1, "write()"); + } + close(to); + close(sv[1]); + if (rd != st.st_size) + fprintf(stderr, "Short read %d, expected %d\n", + (int)rd, (int)st.st_size); + _exit(0); + } +} + +int +main(void) +{ + pid_t pid; + int status; + + if ((pid = fork()) == 0) + test(); + if (pid == -1) + err(1, "fork()"); + if (waitpid(pid, &status, 0) == -1) + err(1, "waitpid(%d)", pid); + if (status != 0) { + if (WIFSIGNALED(status)) + fprintf(stderr, + "pid %d exit signal %d\n", + pid, WTERMSIG(status)); + } + + return (WEXITSTATUS(status)); +}
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