1 /* $NetBSD: t_modcmd.c,v 1.10 2017/01/13 21:30:43 christos 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 #include <sys/sysctl.h> 33 34 #include <rump/rump.h> 35 #include <rump/rump_syscalls.h> 36 37 #include <fs/tmpfs/tmpfs_args.h> 38 39 #include <atf-c.h> 40 #include <dlfcn.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <util.h> 48 49 #include "h_macros.h" 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 static int 63 disable_autoload(void) 64 { 65 struct sysctlnode q, ans[256]; 66 int mib[3]; 67 size_t alen; 68 unsigned i; 69 bool no; 70 71 mib[0] = CTL_KERN; 72 mib[1] = CTL_QUERY; 73 alen = sizeof(ans); 74 75 memset(&q, 0, sizeof(q)); 76 q.sysctl_flags = SYSCTL_VERSION; 77 78 if (rump_sys___sysctl(mib, 2, ans, &alen, &q, sizeof(q)) == -1) 79 return -1; 80 81 for (i = 0; i < __arraycount(ans); i++) 82 if (strcmp("module", ans[i].sysctl_name) == 0) 83 break; 84 if (i == __arraycount(ans)) { 85 errno = ENOENT; 86 return -1; 87 } 88 89 mib[1] = ans[i].sysctl_num; 90 mib[2] = CTL_QUERY; 91 92 if (rump_sys___sysctl(mib, 3, ans, &alen, &q, sizeof(q)) == -1) 93 return errno; 94 95 for (i = 0; i < __arraycount(ans); i++) 96 if (strcmp("autoload", ans[i].sysctl_name) == 0) 97 break; 98 if (i == __arraycount(ans)) { 99 errno = ENOENT; 100 return -1; 101 } 102 103 mib[2] = ans[i].sysctl_num; 104 105 no = false; 106 alen = 0; 107 if (rump_sys___sysctl(mib, 3, NULL, &alen, &no, sizeof(no)) == -1) 108 return errno; 109 110 return 0; 111 112 } 113 114 #define TMPFSMODULE "librumpfs_tmpfs.so" 115 ATF_TC_BODY(cmsg_modcmd, tc) 116 { 117 struct tmpfs_args args; 118 const struct modinfo *const *mi_start, *const *mi_end; 119 void *handle; 120 int i, rv, loop = 0; 121 122 rump_init(); 123 124 if (disable_autoload() == -1) 125 atf_tc_fail_errno("count not disable module autoload"); 126 127 memset(&args, 0, sizeof(args)); 128 args.ta_version = TMPFS_ARGS_VERSION; 129 args.ta_root_mode = 0777; 130 131 if (rump_sys_mkdir("/mp", 0777) == -1) 132 atf_tc_fail_errno("mkdir mountpoint"); 133 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1) 134 atf_tc_fail("mount unexpectedly succeeded"); 135 136 handle = dlopen(TMPFSMODULE, RTLD_GLOBAL); 137 if (handle == NULL) { 138 const char *dlmsg = dlerror(); 139 atf_tc_fail("cannot open %s: %s", TMPFSMODULE, dlmsg); 140 } 141 142 again: 143 mi_start = dlsym(handle, "__start_link_set_modules"); 144 mi_end = dlsym(handle, "__stop_link_set_modules"); 145 if (mi_start == NULL || mi_end == NULL) 146 atf_tc_fail("cannot find module info"); 147 if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))!=0) 148 atf_tc_fail("module init failed: %d (%s)", rv, strerror(rv)); 149 if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))==0) 150 atf_tc_fail("module double init succeeded"); 151 152 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) == -1) 153 atf_tc_fail_errno("still cannot mount"); 154 if (rump_sys_unmount("/mp", 0) == -1) 155 atf_tc_fail("cannot unmount"); 156 for (i = 0; i < (int)(mi_end-mi_start); i++) { 157 if ((rv = rump_pub_module_fini(mi_start[i])) != 0) 158 atf_tc_fail("module fini failed: %d (%s)", 159 rv, strerror(rv)); 160 } 161 for (i = 0; i < (int)(mi_end-mi_start); i++) { 162 if ((rv = rump_pub_module_fini(mi_start[i])) == 0) 163 atf_tc_fail("module double fini succeeded"); 164 } 165 if (loop++ == 0) 166 goto again; 167 168 if (dlclose(handle)) { 169 const char *dlmsg = dlerror(); 170 atf_tc_fail("cannot close %s: %s", TMPFSMODULE, dlmsg); 171 } 172 173 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1) 174 atf_tc_fail("mount unexpectedly succeeded"); 175 } 176 177 ATF_TP_ADD_TCS(tp) 178 { 179 ATF_TP_ADD_TC(tp, cmsg_modcmd); 180 181 return atf_no_error(); 182 } 183
Indexes created Sun Sep 21 16:09:51 GMT 2025