tests/rump/rumpkern/t_modcmd.c

   1 /*      $NetBSD: t_modcmd.c,v 1.3 2009/11/06 15:25:52 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
  55 ATF_TC(cmsg_modcmd);
  56 ATF_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"
  63 ATF_TC_BODY(cmsg_modcmd, tc)
  64 {
  65         struct tmpfs_args args;
  66         struct modinfo **mi;
  67         void *handle;
  68         int rv;
  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         mi = dlsym(handle, "__start_link_set_modules");
  86         if (mi == NULL)
  87                 atf_tc_fail("cannot find module info");
  88         if ((rv = rump_pub_module_init(*mi, NULL)) != 0)
  89                 atf_tc_fail("module init failed: %d (%s)", rv, strerror(rv));
  90
  91         if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) == -1)
  92                 atf_tc_fail_errno("still cannot mount");
  93         if (rump_sys_unmount("/mp", 0) == -1)
  94                 atf_tc_fail("cannot unmount");
  95         if ((rv = rump_pub_module_fini(*mi)) != 0)
  96                 atf_tc_fail("module fini failed: %d (%s)", rv, strerror(rv));
  97         if (dlclose(handle)) {
  98                 const char *dlmsg = dlerror();
  99                 atf_tc_fail("cannot close %s: %s", TMPFSMODULE, dlmsg);
 100         }
 101
 102         if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1)
 103                 atf_tc_fail("mount unexpectedly succeeded");
 104 }
 105
 106 ATF_TP_ADD_TCS(tp)
 107 {
 108         ATF_TP_ADD_TC(tp, cmsg_modcmd);
 109
 110         return atf_no_error();
 111 }