#!/bin/sh
#
# Copyright (c) 2011 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.
#
# sendfile(2) test by kib@
# Deadlock seen.
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
here=`pwd`
file=`basename $diskimage`
dir=`dirname $diskimage`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > sendfile5.c
mycc -o sendfile5 -Wall -Wextra -O2 sendfile5.c
rm -f sendfile5.c
need=1024
[ `df -k $(dirname $diskimage) | tail -1 | awk '{print int($4 / 1024)}'` \
-lt $need ] &&
printf "Need %d MB on %s.\n" $need `dirname $diskimage` && exit 0
dd if=/dev/zero of=$diskimage bs=1m count=$need status=none
cd $here
mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
kldstat | grep -q tmpfs.ko || loaded=1
mount -t tmpfs tmpfs $mntpoint
echo "Testing tmpfs(5)"
cp $diskimage $mntpoint
/tmp/sendfile5 $mntpoint/$file
umount $mntpoint
[ $loaded ] && kldunload tmpfs.ko
mdconfig -a -t swap -s 2g -u $mdstart || exit 1
bsdlabel -w md$mdstart auto
newfs $newfs_flags md${mdstart}$part > /dev/null
mount /dev/md${mdstart}$part $mntpoint
echo "Testing FFS"
cp $diskimage $mntpoint
/tmp/sendfile5 $mntpoint/$file
umount $mntpoint
mdconfig -d -u $mdstart
mount -t nullfs $dir $mntpoint
echo "Testing nullfs(5)"
/tmp/sendfile5 $mntpoint/$file
umount $mntpoint
rm -f /tmp/sendfile5 $diskimage
exit
EOF
#include <sys/types.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 <stdlib.h>
#include <unistd.h>
int
main(int argc, char *argv[])
{
const char *from_name;
char *buf;
int sv[2];
struct stat st;
off_t written, pos;
int child, error, from, status;
if (argc != 2)
errx(1, "Usage: %s from", argv[0]);
from_name = argv[1];
from = open(from_name, O_RDONLY);
if (from == -1)
err(1, "open read %s", from_name);
error = fstat(from, &st);
if (error == -1)
err(1, "stat %s", from_name);
error = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (error == -1)
err(1, "socketpair");
child = fork();
if (child == -1)
err(1, "fork");
else if (child != 0) {
close(sv[1]);
pos = 0;
for (;;) {
error = sendfile(from, sv[0], pos, st.st_size - pos,
NULL, &written, 0);
if (error == -1) {
if (errno != EAGAIN)
err(1, "sendfile");
}
pos += written;
if (pos == st.st_size)
break;
}
close(sv[0]);
waitpid(child, &status, 0);
} else {
close(sv[0]);
buf = malloc(st.st_size);
if (buf == NULL)
err(1, "malloc %jd", st.st_size);
pos = 0;
for (;;) {
written = 413;
if (written > st.st_size - pos)
written = st.st_size - pos;
#if 0
written = st.st_size - pos;
if (written > 1000)
written = 1000;
written = arc4random_uniform(written) + 1;
#endif
error = read(sv[1], buf + pos, written);
if (error == -1)
err(1, "read");
else if (error == 0)
errx(1, "short read");
pos += error;
if (pos == st.st_size)
break;
}
close(sv[1]);
_exit(0);
}
return (0);
}
