1#!/bin/sh 2 3# 4# Copyright (c) 2011 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# sendfile(2) test by kib@ 30# Deadlock seen. 31 32[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 33 34. ../default.cfg 35 36here=`pwd` 37file=`basename $diskimage` 38dir=`dirname $diskimage` 39cd /tmp 40sed '1,/^EOF/d' < $here/$0 > sendfile5.c 41mycc -o sendfile5 -Wall -Wextra -O2 sendfile5.c 42rm -f sendfile5.c 43need=1024 44[ `df -k $(dirname $diskimage) | tail -1 | awk '{print int($4 / 1024)}'` \ 45 -lt $need ] && 46 printf "Need %d MB on %s.\n" $need `dirname $diskimage` && exit 0 47dd if=/dev/zero of=$diskimage bs=1m count=$need status=none 48cd $here 49 50mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 51mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 52 53kldstat | grep -q tmpfs.ko || loaded=1 54mount -t tmpfs tmpfs $mntpoint 55echo "Testing tmpfs(4)" 56cp $diskimage $mntpoint 57/tmp/sendfile5 $mntpoint/$file 58umount $mntpoint 59[ $loaded ] && kldunload tmpfs.ko 60 61mdconfig -a -t swap -s 2g -u $mdstart || exit 1 62newfs $newfs_flags md$mdstart > /dev/null 63mount /dev/md$mdstart $mntpoint 64echo "Testing FFS" 65cp $diskimage $mntpoint 66/tmp/sendfile5 $mntpoint/$file 67umount $mntpoint 68mdconfig -d -u $mdstart 69 70mount -t nullfs $dir $mntpoint 71echo "Testing nullfs(4)" 72/tmp/sendfile5 $mntpoint/$file 73umount $mntpoint 74 75rm -f /tmp/sendfile5 $diskimage 76exit 77EOF 78#include <sys/types.h> 79#include <sys/fcntl.h> 80#include <sys/socket.h> 81#include <sys/stat.h> 82#include <sys/uio.h> 83#include <sys/wait.h> 84#include <err.h> 85#include <errno.h> 86#include <stdlib.h> 87#include <unistd.h> 88 89int 90main(int argc, char *argv[]) 91{ 92 const char *from_name; 93 char *buf; 94 int sv[2]; 95 struct stat st; 96 off_t written, pos; 97 int child, error, from, status; 98 99 if (argc != 2) 100 errx(1, "Usage: %s from", argv[0]); 101 from_name = argv[1]; 102 103 from = open(from_name, O_RDONLY); 104 if (from == -1) 105 err(1, "open read %s", from_name); 106 107 error = fstat(from, &st); 108 if (error == -1) 109 err(1, "stat %s", from_name); 110 111 error = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 112 if (error == -1) 113 err(1, "socketpair"); 114 115 child = fork(); 116 if (child == -1) 117 err(1, "fork"); 118 else if (child != 0) { 119 close(sv[1]); 120 pos = 0; 121 for (;;) { 122 error = sendfile(from, sv[0], pos, st.st_size - pos, 123 NULL, &written, 0); 124 if (error == -1) { 125 if (errno != EAGAIN) 126 err(1, "sendfile"); 127 } 128 pos += written; 129 if (pos == st.st_size) 130 break; 131 } 132 close(sv[0]); 133 waitpid(child, &status, 0); 134 } else { 135 close(sv[0]); 136 buf = malloc(st.st_size); 137 if (buf == NULL) 138 err(1, "malloc %jd", st.st_size); 139 pos = 0; 140 for (;;) { 141 written = 413; 142 if (written > st.st_size - pos) 143 written = st.st_size - pos; 144#if 0 145 written = st.st_size - pos; 146 if (written > 1000) 147 written = 1000; 148 written = arc4random_uniform(written) + 1; 149#endif 150 error = read(sv[1], buf + pos, written); 151 if (error == -1) 152 err(1, "read"); 153 else if (error == 0) 154 errx(1, "short read"); 155 pos += error; 156 if (pos == st.st_size) 157 break; 158 } 159 close(sv[1]); 160 _exit(0); 161 } 162 163 return (0); 164} 165