Page MenuHomeFreeBSD
Differential D36328 Diff 109768 tests/sys/kern/socket_rcvbufforce.c

Changeset View

Standalone View

View Options

tests/sys/kern/socket_rcvbufforce.c

  • This file was added.
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2022 Alexander V. Chernikov
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <poll.h>
#include <atf-c.h>
#define TEST_PORT 35471
static unsigned long
get_maxsockbuf(void)
{
unsigned long maxsockbuf;
size_t llen = sizeof(maxsockbuf);
ATF_REQUIRE(sysctlbyname("kern.ipc.maxsockbuf", &maxsockbuf, &llen, NULL, 0) == 0);
return (maxsockbuf);
}
ATF_TC(socket_rcvbufforce_noroot);
ATF_TC_HEAD(socket_rcvbufforce_noroot, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks that unpriviledged used can't use SO_RCVBUFFORCE");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(socket_rcvbufforce_noroot, tc)
{
unsigned long maxsockbuf = get_maxsockbuf();
int families[] = { AF_INET, AF_INET6, 0 };
int protocols[] = { SOCK_STREAM, SOCK_DGRAM, 0 };
for (int *pfam = families; *pfam != 0; pfam++) {
for (int *pproto = protocols; *pproto != 0; pproto++) {
int ss = socket(*pfam, *pproto, 0);
ATF_REQUIRE(ss >= 0);
size_t buf = maxsockbuf * 2;
ATF_REQUIRE_ERRNO(EPERM, setsockopt(ss, SOL_SOCKET,
SO_RCVBUFFORCE, &buf, sizeof(buf)) != 0);
close(ss);
}
}
}
static void
check_buffer_nostream(const char *test_name)
{
int ss, cs, rc;
struct sockaddr *sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
int one = 1;
unsigned long maxsockbuf;
size_t llen = sizeof(maxsockbuf);
ATF_REQUIRE(sysctlbyname("kern.ipc.maxsockbuf", &maxsockbuf, &llen, NULL, 0) == 0);
if (!strcmp(test_name, "udp")) {
ss = socket(PF_INET, SOCK_DGRAM, 0);
ATF_CHECK(ss >= 0);
rc = setsockopt(ss, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one));
ATF_CHECK_EQ(0, rc);
bzero(&sin, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_len = sizeof(sin);
sin.sin_port = htons(TEST_PORT);
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sa = (struct sockaddr *)&sin;
rc = bind(ss, sa, sa->sa_len);
ATF_CHECK_EQ(0, rc);
cs = socket(PF_INET, SOCK_DGRAM, 0);
ATF_CHECK(cs >= 0);
} else if (!strcmp(test_name, "udp6")) {
ss = socket(PF_INET6, SOCK_DGRAM, 0);
ATF_CHECK(ss >= 0);
rc = setsockopt(ss, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one));
ATF_CHECK_EQ(0, rc);
bzero(&sin6, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(sin6);
sin6.sin6_port = htons(TEST_PORT);
const struct in6_addr in6loopback = IN6ADDR_LOOPBACK_INIT;
sin6.sin6_addr = in6loopback;
sa = (struct sockaddr *)&sin6;
rc = bind(ss, sa, sa->sa_len);
ATF_CHECK_EQ(0, rc);
cs = socket(PF_INET6, SOCK_DGRAM, 0);
ATF_CHECK(cs >= 0);
} else
return;
/* Set large buffer on the server socket */
unsigned long sz = get_maxsockbuf() * 2;
ATF_REQUIRE_ERRNO(0, setsockopt(ss, SOL_SOCKET,
SO_RCVBUFFORCE, &sz, sizeof(sz)) == 0);
int chunk_size = 1024;
char *buf = malloc(chunk_size);
memset(buf, 0xFE, chunk_size);
for (unsigned long i = chunk_size; i < sz; i += chunk_size) {
rc = sendto(cs, buf, chunk_size, 0, sa, sa->sa_len);
ATF_REQUIRE_EQ(rc, chunk_size);
}
close(ss);
close(cs);
}
static void
check_buffer_stream(const char *test_name)
{
int ss, cs, rc;
struct sockaddr *sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
struct sockaddr_in6 sa_from;
int one = 1;
unsigned long maxsockbuf;
size_t llen = sizeof(maxsockbuf);
ATF_REQUIRE(sysctlbyname("kern.ipc.maxsockbuf", &maxsockbuf, &llen, NULL, 0) == 0);
if (!strcmp(test_name, "udp")) {
ss = socket(PF_INET, SOCK_STREAM, 0);
ATF_CHECK(ss >= 0);
rc = setsockopt(ss, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one));
ATF_CHECK_EQ(0, rc);
bzero(&sin, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_len = sizeof(sin);
sin.sin_port = htons(TEST_PORT);
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sa = (struct sockaddr *)&sin;
rc = bind(ss, sa, sa->sa_len);
ATF_CHECK_EQ(0, rc);
cs = socket(PF_INET, SOCK_STREAM, 0);
ATF_CHECK(cs >= 0);
} else if (!strcmp(test_name, "udp6")) {
ss = socket(PF_INET6, SOCK_STREAM, 0);
ATF_CHECK(ss >= 0);
rc = setsockopt(ss, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one));
ATF_CHECK_EQ(0, rc);
bzero(&sin6, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(sin6);
sin6.sin6_port = htons(TEST_PORT);
const struct in6_addr in6loopback = IN6ADDR_LOOPBACK_INIT;
sin6.sin6_addr = in6loopback;
sa = (struct sockaddr *)&sin6;
rc = bind(ss, sa, sa->sa_len);
ATF_CHECK_EQ(0, rc);
cs = socket(PF_INET6, SOCK_STREAM, 0);
ATF_CHECK(cs >= 0);
} else
return;
/* Connect first */
ATF_REQUIRE_ERRNO(0, connect(cs, sa, sa->sa_len) == 0);
socklen_t sa_size = sizeof(sa_from);
int as = accept(ss, (struct sockaddr *)&sa_from, &sa_size);
ATF_REQUIRE(as >= 0);
ssize_t sz = get_maxsockbuf() * 2;
ATF_REQUIRE_ERRNO(0, setsockopt(as, SOL_SOCKET,
SO_RCVBUFFORCE, &sz, sizeof(sz)) == 0);
char *buf = malloc(sz);
memset(buf, 0xFE, sz);
ATF_REQUIRE_EQ(send(cs, buf, sz, 0), sz);
close(ss);
close(cs);
close(as);
}
ATF_TC(socket_afinet_udp_rcvbufforce);
ATF_TC_HEAD(socket_afinet_udp_rcvbufforce, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks SO_RCVBUFFORCE with inet/udp");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(socket_afinet_udp_rcvbufforce, tc)
{
check_buffer_nostream("udp");
}
ATF_TC(socket_afinet6_udp_rcvbufforce);
ATF_TC_HEAD(socket_afinet6_udp_rcvbufforce, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks SO_RCVBUFFORCE with inet6/udp");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(socket_afinet6_udp_rcvbufforce, tc)
{
check_buffer_nostream("udp6");
}
ATF_TC(socket_afinet_tcp_rcvbufforce);
ATF_TC_HEAD(socket_afinet_tcp_rcvbufforce, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks SO_RCVBUFFORCE with inet/tcp");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(socket_afinet_tcp_rcvbufforce, tc)
{
check_buffer_stream("tcp");
}
ATF_TC(socket_afinet6_tcp_rcvbufforce);
ATF_TC_HEAD(socket_afinet6_tcp_rcvbufforce, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks SO_RCVBUFFORCE with inet6/tcp");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(socket_afinet6_tcp_rcvbufforce, tc)
{
check_buffer_stream("tcp6");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, socket_afinet_udp_rcvbufforce);
ATF_TP_ADD_TC(tp, socket_afinet6_udp_rcvbufforce);
ATF_TP_ADD_TC(tp, socket_afinet_tcp_rcvbufforce);
ATF_TP_ADD_TC(tp, socket_afinet6_tcp_rcvbufforce);
ATF_TP_ADD_TC(tp, socket_rcvbufforce_noroot);
return atf_no_error();
}