minix/tests/rump/rumpkern/t_lwproc.c

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/* $NetBSD: t_lwproc.c,v 1.5 2011/01/02 12:58:17 pooka Exp $ */
/*
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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/types.h>
#include <sys/wait.h>
#include <rump/rump.h>
#include <rump/rump_syscalls.h>
#include <atf-c.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "../../h_macros.h"
ATF_TC(makelwp);
ATF_TC_HEAD(makelwp, tc)
{
atf_tc_set_md_var(tc, "descr", "tests that lwps can be attached to "
"processes");
}
ATF_TC_BODY(makelwp, tc)
{
struct lwp *l;
pid_t pid;
rump_init();
RZ(rump_pub_lwproc_newlwp(0));
ATF_REQUIRE_EQ(rump_pub_lwproc_newlwp(37), ESRCH);
l = rump_pub_lwproc_curlwp();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
ATF_REQUIRE(rump_pub_lwproc_curlwp() != l);
l = rump_pub_lwproc_curlwp();
RZ(rump_pub_lwproc_newlwp(rump_sys_getpid()));
ATF_REQUIRE(rump_pub_lwproc_curlwp() != l);
pid = rump_sys_getpid();
ATF_REQUIRE(pid != -1 && pid != 0);
}
ATF_TC(proccreds);
ATF_TC_HEAD(proccreds, tc)
{
atf_tc_set_md_var(tc, "descr", "check that procs have different creds");
}
ATF_TC_BODY(proccreds, tc)
{
struct lwp *l1, *l2;
rump_init();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
l1 = rump_pub_lwproc_curlwp();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
l2 = rump_pub_lwproc_curlwp();
RL(rump_sys_setuid(22));
ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
rump_pub_lwproc_switch(l1);
ATF_REQUIRE_EQ(rump_sys_getuid(), 0); /* from parent, proc0 */
RL(rump_sys_setuid(11));
ATF_REQUIRE_EQ(rump_sys_getuid(), 11);
rump_pub_lwproc_switch(l2);
ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
rump_pub_lwproc_newlwp(rump_sys_getpid());
ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
}
ATF_TC(inherit);
ATF_TC_HEAD(inherit, tc)
{
atf_tc_set_md_var(tc, "descr", "new processes inherit creds from "
"parents");
}
ATF_TC_BODY(inherit, tc)
{
rump_init();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
RL(rump_sys_setuid(66));
ATF_REQUIRE_EQ(rump_sys_getuid(), 66);
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
ATF_REQUIRE_EQ(rump_sys_getuid(), 66);
/* release lwp and proc */
rump_pub_lwproc_releaselwp();
ATF_REQUIRE_EQ(rump_sys_getuid(), 0);
}
ATF_TC(lwps);
ATF_TC_HEAD(lwps, tc)
{
atf_tc_set_md_var(tc, "descr", "proc can hold many lwps and is "
"automatically g/c'd when the last one exits");
}
#define LOOPS 128
ATF_TC_BODY(lwps, tc)
{
struct lwp *l[LOOPS];
pid_t mypid;
struct lwp *l_orig;
int i;
rump_init();
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
mypid = rump_sys_getpid();
RL(rump_sys_setuid(375));
l_orig = rump_pub_lwproc_curlwp();
for (i = 0; i < LOOPS; i++) {
mypid = rump_sys_getpid();
ATF_REQUIRE(mypid != -1 && mypid != 0);
RZ(rump_pub_lwproc_newlwp(mypid));
l[i] = rump_pub_lwproc_curlwp();
ATF_REQUIRE_EQ(rump_sys_getuid(), 375);
}
rump_pub_lwproc_switch(l_orig);
rump_pub_lwproc_releaselwp();
for (i = 0; i < LOOPS; i++) {
rump_pub_lwproc_switch(l[i]);
ATF_REQUIRE_EQ(rump_sys_getpid(), mypid);
ATF_REQUIRE_EQ(rump_sys_getuid(), 375);
rump_pub_lwproc_releaselwp();
ATF_REQUIRE_EQ(rump_sys_getpid(), 1);
ATF_REQUIRE_EQ(rump_sys_getuid(), 0);
}
ATF_REQUIRE_EQ(rump_pub_lwproc_newlwp(mypid), ESRCH);
}
ATF_TC(nolwprelease);
ATF_TC_HEAD(nolwprelease, tc)
{
atf_tc_set_md_var(tc, "descr", "check that lwp context is required "
"for lwproc_releaselwp()");
}
ATF_TC_BODY(nolwprelease, tc)
{
int status;
switch (fork()) {
case 0:
rump_init();
rump_pub_lwproc_releaselwp();
atf_tc_fail("survived");
break;
case -1:
atf_tc_fail_errno("fork");
break;
default:
wait(&status);
ATF_REQUIRE(WIFSIGNALED(status));
ATF_REQUIRE_EQ(WTERMSIG(status), SIGABRT);
}
}
ATF_TC(nolwp);
ATF_TC_HEAD(nolwp, tc)
{
atf_tc_set_md_var(tc, "descr", "check that curlwp for an implicit "
"context is NULL");
}
ATF_TC_BODY(nolwp, tc)
{
rump_init();
ATF_REQUIRE_EQ(rump_pub_lwproc_curlwp(), NULL);
}
ATF_TC(nullswitch);
ATF_TC_HEAD(nullswitch, tc)
{
atf_tc_set_md_var(tc, "descr", "check that switching to NULL marks "
"current lwp as not running");
}
ATF_TC_BODY(nullswitch, tc)
{
struct lwp *l;
rump_init();
RZ(rump_pub_lwproc_newlwp(0));
l = rump_pub_lwproc_curlwp();
rump_pub_lwproc_switch(NULL);
/* if remains LP_RUNNING, next call will panic */
rump_pub_lwproc_switch(l);
}
ATF_TC(rfork);
ATF_TC_HEAD(rfork, tc)
{
atf_tc_set_md_var(tc, "descr", "check that fork shares fd's");
}
ATF_TC_BODY(rfork, tc)
{
struct stat sb;
struct lwp *l, *l2;
int fd;
RZ(rump_init());
ATF_REQUIRE_EQ(rump_pub_lwproc_rfork(RUMP_RFFDG|RUMP_RFCFDG), EINVAL);
RZ(rump_pub_lwproc_rfork(0));
l = rump_pub_lwproc_curlwp();
RL(fd = rump_sys_open("/file", O_RDWR | O_CREAT, 0777));
/* ok, first check rfork(RUMP_RFCFDG) does *not* preserve fd's */
RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
ATF_REQUIRE_ERRNO(EBADF, rump_sys_write(fd, &fd, sizeof(fd)) == -1);
/* then check that rfork(0) does */
rump_pub_lwproc_switch(l);
RZ(rump_pub_lwproc_rfork(0));
ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd));
RL(rump_sys_fstat(fd, &sb));
l2 = rump_pub_lwproc_curlwp();
/*
* check that the shared fd table is really shared by
* closing fd in parent
*/
rump_pub_lwproc_switch(l);
RL(rump_sys_close(fd));
rump_pub_lwproc_switch(l2);
ATF_REQUIRE_ERRNO(EBADF, rump_sys_fstat(fd, &sb) == -1);
/* redo, this time copying the fd table instead of sharing it */
rump_pub_lwproc_releaselwp();
rump_pub_lwproc_switch(l);
RL(fd = rump_sys_open("/file", O_RDWR, 0777));
RZ(rump_pub_lwproc_rfork(RUMP_RFFDG));
ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd));
RL(rump_sys_fstat(fd, &sb));
l2 = rump_pub_lwproc_curlwp();
/* check that the fd table is copied */
rump_pub_lwproc_switch(l);
RL(rump_sys_close(fd));
rump_pub_lwproc_switch(l2);
RL(rump_sys_fstat(fd, &sb));
ATF_REQUIRE_EQ(sb.st_size, sizeof(fd));
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, makelwp);
ATF_TP_ADD_TC(tp, proccreds);
ATF_TP_ADD_TC(tp, inherit);
ATF_TP_ADD_TC(tp, lwps);
ATF_TP_ADD_TC(tp, nolwprelease);
ATF_TP_ADD_TC(tp, nolwp);
ATF_TP_ADD_TC(tp, nullswitch);
ATF_TP_ADD_TC(tp, rfork);
return atf_no_error();
}