Date: Tue, 10 Nov 2009 16:47:48 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r199142 - projects/stress2/misc Message-ID: <200911101647.nAAGlm6p065651@svn.freebsd.org>
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Author: pho Date: Tue Nov 10 16:47:48 2009 New Revision: 199142 URL: http://svn.freebsd.org/changeset/base/199142 Log: Regression test scenario for sendfile livelock. Added: projects/stress2/misc/sendfile.sh (contents, props changed) Added: projects/stress2/misc/sendfile.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/stress2/misc/sendfile.sh Tue Nov 10 16:47:48 2009 (r199142) @@ -0,0 +1,215 @@ +#!/bin/sh + +# +# Copyright (c) 2009 Peter Holm <pho@FreeBSD.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. +# +# 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. +# +# $FreeBSD$ +# + +# Test scenario for sendfile livelock seen on 7.2-STABLE for non SMP + +# Scenario by kib@ + +. ../default.cfg + +odir=`pwd` + +cd /tmp +sed '1,/^EOF/d' < $odir/$0 > sendfile.c +cc -o sendfile -Wall sendfile.c -pthread +rm -f sendfile.c +[ -d "$RUNDIR" ] || mkdir -p $RUNDIR +cd $RUNDIR + +in=/tmp/inputFile +out=/tmp/outputFile + +for i in 1 2 3 4 8 16 1k 2k 3k 4k 5k 1m 2m 3m 4m 5m ; do + rm -f $in $out + dd if=/dev/random of=$in bs=$i count=1 2>&1 | \ + egrep -v "records|transferred" + /tmp/sendfile $in $out 12345 + cmp $in $out || ls -l $in $out + rm -f $in $out +done +rm -f /tmp/sendfile +exit +EOF +#include <err.h> +#include <fcntl.h> +#include <netdb.h> +#include <netinet/in.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <unistd.h> + +int port; +char *inputFile; +char *outputFile; +int bufsize = 4096; + +static void +reader(void) { + int tcpsock, msgsock; + int on; + socklen_t len; + struct sockaddr_in inetaddr, inetpeer; + int n, t, *buf, fd; + + on = 1; + if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) + err(1, "socket(), %s:%d", __FILE__, __LINE__); + + if (setsockopt(tcpsock, + SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) + err(1, "setsockopt(), %s:%d", __FILE__, __LINE__); + + inetaddr.sin_family = AF_INET; + inetaddr.sin_addr.s_addr = INADDR_ANY; + inetaddr.sin_port = htons(port); + inetaddr.sin_len = sizeof(inetaddr); + + if (bind(tcpsock, + (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) + err(1, "bind(), %s:%d", __FILE__, __LINE__); + + if (listen(tcpsock, 5) < 0) + err(1, "listen(), %s:%d", __FILE__, __LINE__); + + len = sizeof(inetpeer); + if ((msgsock = accept(tcpsock, + (struct sockaddr *)&inetpeer, &len)) < 0) + err(1, "accept(), %s:%d", __FILE__, __LINE__); + + t = 0; + if ((buf = malloc(bufsize)) == NULL) + err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__); + + if ((fd = open(outputFile, O_RDWR | O_CREAT | O_TRUNC, 0640)) == -1) + err(1, "open(%s)", outputFile); + + for (;;) { + if ((n = read(msgsock, buf, bufsize)) < 0) + err(1, "read(), %s:%d", __FILE__, __LINE__); + t += n; + if (n == 0) break; + + if ((write(fd, buf, n)) != n) + err(1, "write"); + } + close(msgsock); + close(fd); + return; +} + +static void +writer(void) { + int tcpsock, on; + struct sockaddr_in inetaddr; + struct hostent *hostent; + struct stat statb; + int i, r, fd; + off_t off = 0; +#if 1 + size_t size; +#endif + + on = 1; + for (i = 1; i < 5; i++) { + if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) + err(1, "socket(), %s:%d", __FILE__, __LINE__); + + if (setsockopt(tcpsock, + SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) + err(1, "setsockopt(), %s:%d", __FILE__, __LINE__); + +#if 1 /* livelock trigger */ + size = getpagesize() -4; + if (setsockopt(tcpsock, + SOL_SOCKET, SO_SNDBUF, (void *)&size, sizeof(size)) < 0) + err(1, "setsockopt(SO_SNDBUF), %s:%d", __FILE__, __LINE__); +#endif + + hostent = gethostbyname ("localhost"); + memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr, + sizeof (struct in_addr)); + + inetaddr.sin_family = AF_INET; + inetaddr.sin_addr.s_addr = INADDR_ANY; + inetaddr.sin_port = htons(port); + inetaddr.sin_len = sizeof(inetaddr); + + r = connect(tcpsock, (struct sockaddr *) &inetaddr, + sizeof(inetaddr)); + if (r == 0) + break; + sleep(1); + close(tcpsock); + } + if (r < 0) + err(1, "connect(), %s:%d", __FILE__, __LINE__); + + if (stat(inputFile, &statb) != 0) + err(1, "stat(%s)", inputFile); + + if ((fd = open(inputFile, O_RDONLY)) == -1) + err(1, "open(%s)", inputFile); + + if (sendfile(fd, tcpsock, 0, statb.st_size, NULL, &off, 0) == -1) + err(1, "sendfile"); + + return; +} + +int +main(int argc, char **argv) +{ + pid_t pid; + + if (argc != 4) { + fprintf(stderr, "Usage: %s <inputFile outputFile portNumber\n", argv[0]); + return (1); + } + inputFile = argv[1]; + outputFile = argv[2]; + port = atoi(argv[3]); + + if ((pid = fork()) == 0) { + writer(); + exit(EXIT_SUCCESS); + + } else if (pid > 0) { + reader(); + kill(pid, SIGINT); + } else + err(1, "fork(), %s:%d", __FILE__, __LINE__); + + return (0); +}
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