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/* $NetBSD: t_socket.c,v 1.3 2013/10/19 17:45:00 christos Exp $ */
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <rump/rump.h>
#include <rump/rump_syscalls.h>
#include <atf-c.h>
#include <fcntl.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "../../h_macros.h"
ATF_TC(cmsg_sendfd_bounds);
ATF_TC_HEAD(cmsg_sendfd_bounds, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks that attempting to pass an "
"invalid fd returns an error");
}
ATF_TC_BODY(cmsg_sendfd_bounds, tc)
{
struct cmsghdr *cmp;
struct msghdr msg;
struct iovec iov;
int s[2];
int fd;
rump_init();
if (rump_sys_socketpair(AF_LOCAL, SOCK_STREAM, 0, s) == -1)
atf_tc_fail("rump_sys_socket");
cmp = malloc(CMSG_SPACE(sizeof(int)));
iov.iov_base = &fd;
iov.iov_len = sizeof(int);
cmp->cmsg_level = SOL_SOCKET;
cmp->cmsg_type = SCM_RIGHTS;
cmp->cmsg_len = CMSG_LEN(sizeof(int));
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = cmp;
msg.msg_controllen = CMSG_SPACE(sizeof(int));
/*
* ERROR HERE: trying to pass invalid fd
* (This value was previously directly used to index the fd
* array and therefore we are passing a hyperspace index)
*/
*(int *)CMSG_DATA(cmp) = 0x12345678;
rump_sys_sendmsg(s[0], &msg, 0);
if (errno != EBADF)
atf_tc_fail("descriptor passing failed: expected EBADF (9), "
"got %d\n(%s)", errno, strerror(errno));
}
ATF_TC(cmsg_sendfd);
ATF_TC_HEAD(cmsg_sendfd, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks that fd passing works");
atf_tc_set_md_var(tc, "timeout", "2");
}
ATF_TC_BODY(cmsg_sendfd, tc)
{
char buf[128];
struct cmsghdr *cmp;
struct msghdr msg;
struct sockaddr_un sun;
struct lwp *l1;
struct iovec iov;
socklen_t sl;
int s1, s2, sgot;
int rfd, fd[2], storage;
rump_init();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
l1 = rump_pub_lwproc_curlwp();
/* create unix socket and bind it to a path */
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
#define SOCKPATH "/com"
strncpy(sun.sun_path, SOCKPATH, sizeof(SOCKPATH));
s1 = rump_sys_socket(AF_LOCAL, SOCK_STREAM, 0);
if (s1 == -1)
atf_tc_fail_errno("socket 1");
if (rump_sys_bind(s1, (struct sockaddr *)&sun, SUN_LEN(&sun)) == -1)
atf_tc_fail_errno("socket 1 bind");
if (rump_sys_listen(s1, 1) == -1)
atf_tc_fail_errno("socket 1 listen");
/* create second process for test */
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
(void)rump_pub_lwproc_curlwp();
/* connect to unix domain socket */
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
strncpy(sun.sun_path, SOCKPATH, sizeof(SOCKPATH));
s2 = rump_sys_socket(AF_LOCAL, SOCK_STREAM, 0);
if (s2 == -1)
atf_tc_fail_errno("socket 2");
if (rump_sys_connect(s2, (struct sockaddr *)&sun, SUN_LEN(&sun)) == -1)
atf_tc_fail_errno("socket 2 connect");
/* open a pipe and write stuff to it */
if (rump_sys_pipe(fd) == -1)
atf_tc_fail_errno("can't open pipe");
#define MAGICSTRING "duam xnaht"
if (rump_sys_write(fd[1], MAGICSTRING, sizeof(MAGICSTRING)) !=
sizeof(MAGICSTRING))
atf_tc_fail_errno("pipe write"); /* XXX: errno */
cmp = malloc(CMSG_SPACE(sizeof(int)));
iov.iov_base = &storage;
iov.iov_len = sizeof(int);
cmp->cmsg_level = SOL_SOCKET;
cmp->cmsg_type = SCM_RIGHTS;
cmp->cmsg_len = CMSG_LEN(sizeof(int));
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = cmp;
msg.msg_controllen = CMSG_SPACE(sizeof(int));
*(int *)CMSG_DATA(cmp) = fd[0];
/* pass the fd */
if (rump_sys_sendmsg(s2, &msg, 0) == -1)
atf_tc_fail_errno("sendmsg failed");
/*
* We will read to the same cmsg space. Overwrite the space
* with an invalid fd to make sure we get an explicit error
* if we don't manage to read the fd.
*/
*(int *)CMSG_DATA(cmp) = -1;
/* switch back to original proc */
rump_pub_lwproc_switch(l1);
/* accept connection and read fd */
sl = sizeof(sun);
sgot = rump_sys_accept(s1, (struct sockaddr *)&sun, &sl);
if (sgot == -1)
atf_tc_fail_errno("accept");
if (rump_sys_recvmsg(sgot, &msg, 0) == -1)
atf_tc_fail_errno("recvmsg failed");
rfd = *(int *)CMSG_DATA(cmp);
/* read from the fd */
memset(buf, 0, sizeof(buf));
if (rump_sys_read(rfd, buf, sizeof(buf)) == -1)
atf_tc_fail_errno("read rfd");
/* check that we got the right stuff */
if (strcmp(buf, MAGICSTRING) != 0)
atf_tc_fail("expected \"%s\", got \"%s\"", MAGICSTRING, buf);
}
ATF_TC(sock_cloexec);
ATF_TC_HEAD(sock_cloexec, tc)
{
atf_tc_set_md_var(tc, "descr", "SOCK_CLOEXEC kernel invariant failure");
}
ATF_TC_BODY(sock_cloexec, tc)
{
rump_init();
rump_pub_lwproc_rfork(RUMP_RFFDG);
if (rump_sys_socket(-1, SOCK_CLOEXEC, 0) != -1)
atf_tc_fail("invalid socket parameters unexpectedly worked");
rump_pub_lwproc_releaselwp();
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, cmsg_sendfd);
ATF_TP_ADD_TC(tp, cmsg_sendfd_bounds);
ATF_TP_ADD_TC(tp, sock_cloexec);
return atf_no_error();
}
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