t_modcmd.c revision 1.5 
1/*	$NetBSD: t_modcmd.c,v 1.5 2010/03/05 18:49:30 pooka Exp $	*/
2
3/*
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
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 NETBSD FOUNDATION, INC. AND
17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/types.h>
31#include <sys/mount.h>
32
33#include <rump/rump.h>
34#include <rump/rump_syscalls.h>
35
36#include <fs/tmpfs/tmpfs_args.h>
37
38#include <atf-c.h>
39#include <dlfcn.h>
40#include <err.h>
41#include <errno.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45#include <unistd.h>
46#include <util.h>
47
48#include "../../h_macros.h"
49
50/*
51 * We verify that modules can be loaded and unloaded.
52 * tmpfs was chosen because it does not depend on an image.
53 */
54
55ATF_TC(cmsg_modcmd);
56ATF_TC_HEAD(cmsg_modcmd, tc)
57{
58	atf_tc_set_md_var(tc, "descr", "Checks that loading and unloading "
59	    "a module (vfs/tmpfs) is possible");
60}
61
62#define TMPFSMODULE "librumpfs_tmpfs.so"
63ATF_TC_BODY(cmsg_modcmd, tc)
64{
65	struct tmpfs_args args;
66	const struct modinfo *const *mi_start, *const *mi_end;
67	void *handle;
68	int i, rv, loop = 0;
69
70	rump_init();
71	memset(&args, 0, sizeof(args));
72	args.ta_version = TMPFS_ARGS_VERSION;
73	args.ta_root_mode = 0777;
74
75	if (rump_sys_mkdir("/mp", 0777) == -1)
76		atf_tc_fail_errno("mkdir mountpoint");
77	if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1)
78		atf_tc_fail("mount unexpectedly succeeded");
79
80	handle = dlopen(TMPFSMODULE, RTLD_GLOBAL);
81	if (handle == NULL) {
82		const char *dlmsg = dlerror();
83		atf_tc_fail("cannot open %s: %s", TMPFSMODULE, dlmsg);
84	}
85
86 again:
87	mi_start = dlsym(handle, "__start_link_set_modules");
88	mi_end = dlsym(handle, "__stop_link_set_modules");
89	if (mi_start == NULL || mi_end == NULL)
90		atf_tc_fail("cannot find module info");
91	if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))!=0)
92		atf_tc_fail("module init failed: %d (%s)", rv, strerror(rv));
93	if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))==0)
94		atf_tc_fail("module double init succeeded");
95
96	if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) == -1)
97		atf_tc_fail_errno("still cannot mount");
98	if (rump_sys_unmount("/mp", 0) == -1)
99		atf_tc_fail("cannot unmount");
100	for (i = 0; i < (int)(mi_end-mi_start); i++) {
101		if ((rv = rump_pub_module_fini(mi_start[i])) != 0)
102			atf_tc_fail("module fini failed: %d (%s)",
103			    rv, strerror(rv));
104	}
105	for (i = 0; i < (int)(mi_end-mi_start); i++) {
106		if ((rv = rump_pub_module_fini(mi_start[i])) == 0)
107			atf_tc_fail("module double fini succeeded");
108	}
109	if (loop++ == 0)
110		goto again;
111
112	if (dlclose(handle)) {
113		const char *dlmsg = dlerror();
114		atf_tc_fail("cannot close %s: %s", TMPFSMODULE, dlmsg);
115	}
116
117	if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1)
118		atf_tc_fail("mount unexpectedly succeeded");
119}
120
121ATF_TP_ADD_TCS(tp)
122{
123	ATF_TP_ADD_TC(tp, cmsg_modcmd);
124
125	return atf_no_error();
126}
127