freebsd-dev/tools/regression/sockets/sendfile/sendfile.c
Robert Watson 0fb57f87a3 Add a basic regression test for sendfile() over TCP, which sends varying
lengths of headers and data and makes sure it receives about the right
number of bytes.
2006-05-25 09:50:14 +00:00

327 lines
7.1 KiB
C

/*-
* Copyright (c) 2006 Robert N. M. Watson
* 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <err.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/*
* Simple regression test for sendfile. Creates a file sized at three pages
* and then proceeds to send it over a series of sockets, exercising a number
* of cases and performing limited validation.
*/
#define TEST_PORT 5678
#define TEST_MAGIC 0x4440f7bb
#define TEST_PAGES 3
#define TEST_SECONDS 30
struct test_header {
u_int32_t th_magic;
u_int32_t th_header_length;
u_int32_t th_offset;
u_int32_t th_length;
};
pid_t child_pid, parent_pid;
int listen_socket;
int file_fd;
static int
test_th(struct test_header *th, u_int32_t *header_length, u_int32_t *offset,
u_int32_t *length)
{
if (th->th_magic != htonl(TEST_MAGIC))
return (0);
*header_length = ntohl(th->th_header_length);
*offset = ntohl(th->th_offset);
*length = ntohl(th->th_length);
return (1);
}
static void
signal_alarm(int signum)
{
}
static void
setup_alarm(int seconds)
{
signal(SIGALRM, signal_alarm);
alarm(seconds);
}
static void
cancel_alarm(void)
{
alarm(0);
signal(SIGALRM, SIG_DFL);
}
static void
receive_test(int accept_socket)
{
u_int32_t header_length, offset, length, counter;
struct test_header th;
ssize_t len;
char ch;
len = read(accept_socket, &th, sizeof(th));
if (len < 0)
err(-1, "read");
if (len < sizeof(th))
errx(-1, "read: %d", len);
if (test_th(&th, &header_length, &offset, &length) == 0)
errx(-1, "test_th: bad");
counter = 0;
while (1) {
len = read(accept_socket, &ch, sizeof(ch));
if (len < 0)
err(-1, "read");
if (len == 0)
break;
counter++;
/* XXXRW: Validate byte here. */
}
if (counter != header_length + length)
errx(-1, "receive_test: expected (%d, %d) received %d",
header_length, length, counter);
}
static void
run_child(void)
{
int accept_socket;
while (1) {
accept_socket = accept(listen_socket, NULL, NULL);
setup_alarm(TEST_SECONDS);
receive_test(accept_socket);
cancel_alarm();
close(accept_socket);
}
}
static int
new_test_socket(void)
{
struct sockaddr_in sin;
int connect_socket;
connect_socket = socket(PF_INET, SOCK_STREAM, 0);
if (connect_socket < 0)
err(-1, "socket");
bzero(&sin, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sin.sin_port = htons(TEST_PORT);
if (connect(connect_socket, (struct sockaddr *)&sin, sizeof(sin)) < 0)
err(-1, "connect");
return (connect_socket);
}
static void
init_th(struct test_header *th, u_int32_t header_length, u_int32_t offset,
u_int32_t length)
{
bzero(th, sizeof(*th));
th->th_magic = htonl(TEST_MAGIC);
th->th_header_length = htonl(header_length);
th->th_offset = htonl(offset);
th->th_length = htonl(length);
}
static void
send_test(int connect_socket, u_int32_t header_length, u_int32_t offset,
u_int32_t length)
{
struct test_header th;
struct sf_hdtr hdtr, *hdtrp;
struct iovec headers;
char *header;
ssize_t len;
off_t off;
len = lseek(file_fd, 0, SEEK_SET);
if (len < 0)
err(-1, "lseek");
if (len != 0)
errx(-1, "lseek: %d", len);
init_th(&th, header_length, offset, length);
len = write(connect_socket, &th, sizeof(th));
if (len < 0)
err(-1, "send");
if (len != sizeof(th))
err(-1, "send: %d", len);
if (header_length != 0) {
header = malloc(header_length);
if (header == NULL)
err(-1, "malloc");
hdtrp = &hdtr;
bzero(&headers, sizeof(headers));
headers.iov_base = header;
headers.iov_len = header_length;
bzero(&hdtr, sizeof(hdtr));
hdtr.headers = &headers;
hdtr.hdr_cnt = 1;
hdtr.trailers = NULL;
hdtr.trl_cnt = 0;
} else {
hdtrp = NULL;
header = NULL;
}
if (sendfile(file_fd, connect_socket, offset, length, hdtrp, &off,
0) < 0)
err(-1, "sendfile");
if (off != length)
errx(-1, "sendfile: off %llu", off);
if (header != NULL)
free(header);
}
static void
run_parent(void)
{
int connect_socket;
connect_socket = new_test_socket();
send_test(connect_socket, 0, 0, 1);
close(connect_socket);
sleep(1);
connect_socket = new_test_socket();
send_test(connect_socket, 0, 0, getpagesize());
close(connect_socket);
sleep(1);
connect_socket = new_test_socket();
send_test(connect_socket, 0, 1, 1);
close(connect_socket);
sleep(1);
connect_socket = new_test_socket();
send_test(connect_socket, 0, 1, getpagesize());
close(connect_socket);
sleep(1);
connect_socket = new_test_socket();
send_test(connect_socket, 0, getpagesize(), getpagesize());
close(connect_socket);
sleep(1);
(void)kill(child_pid, SIGKILL);
}
int
main(int argc, char *argv[])
{
char path[PATH_MAX], *page_buffer;
struct sockaddr_in sin;
int pagesize;
ssize_t len;
pagesize = getpagesize();
page_buffer = malloc(TEST_PAGES * pagesize);
if (page_buffer == NULL)
err(-1, "malloc");
bzero(page_buffer, TEST_PAGES * pagesize);
listen_socket = socket(PF_INET, SOCK_STREAM, 0);
if (listen_socket < 0)
err(-1, "socket");
bzero(&sin, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sin.sin_port = htons(TEST_PORT);
snprintf(path, PATH_MAX, "/tmp/sendfile.XXXXXXXXXXXX");
file_fd = mkstemp(path);
(void)unlink(path);
len = write(file_fd, page_buffer, TEST_PAGES * pagesize);
if (len < 0)
err(-1, "write");
len = lseek(file_fd, 0, SEEK_SET);
if (len < 0)
err(-1, "lseek");
if (len != 0)
errx(-1, "lseek: %d", len);
if (bind(listen_socket, (struct sockaddr *)&sin, sizeof(sin)) < 0)
err(-1, "bind");
if (listen(listen_socket, -1) < 0)
err(-1, "listen");
parent_pid = getpid();
child_pid = fork();
if (child_pid < 0)
err(-1, "fork");
if (child_pid == 0) {
child_pid = getpid();
run_child();
} else
run_parent();
return (0);
}