t_modcmd.c revision 1.8
1 /* $NetBSD: t_modcmd.c,v 1.8 2010/05/31 23:44:54 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 #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 #else 62 #define atf_tc_fail_errno(...) err(1, __VA_ARGS__) 63 #endif 64 65 static int 66 disable_autoload(void) 67 { 68 struct sysctlnode q, ans[256]; 69 int mib[3]; 70 size_t alen; 71 unsigned i; 72 bool no; 73 74 mib[0] = CTL_KERN; 75 mib[1] = CTL_QUERY; 76 alen = sizeof(ans); 77 78 memset(&q, 0, sizeof(q)); 79 q.sysctl_flags = SYSCTL_VERSION; 80 81 if (rump_sys___sysctl(mib, 2, ans, &alen, &q, sizeof(q)) == -1) 82 return -1; 83 84 for (i = 0; i < __arraycount(ans); i++) 85 if (strcmp("module", ans[i].sysctl_name) == 0) 86 break; 87 if (i == __arraycount(ans)) { 88 errno = ENOENT; 89 return -1; 90 } 91 92 mib[1] = ans[i].sysctl_num; 93 mib[2] = CTL_QUERY; 94 95 if (rump_sys___sysctl(mib, 3, ans, &alen, &q, sizeof(q)) == -1) 96 return errno; 97 98 for (i = 0; i < __arraycount(ans); i++) 99 if (strcmp("autoload", ans[i].sysctl_name) == 0) 100 break; 101 if (i == __arraycount(ans)) { 102 errno = ENOENT; 103 return -1; 104 } 105 106 mib[2] = ans[i].sysctl_num; 107 108 no = false; 109 alen = 0; 110 if (rump_sys___sysctl(mib, 3, NULL, &alen, &no, sizeof(no)) == -1) 111 return errno; 112 113 return 0; 114 115 } 116 117 #define TMPFSMODULE "librumpfs_tmpfs.so" 118 ATF_TC_BODY(cmsg_modcmd, tc) 119 { 120 struct tmpfs_args args; 121 const struct modinfo *const *mi_start, *const *mi_end; 122 void *handle; 123 int i, rv, loop = 0; 124 125 rump_init(); 126 127 if (disable_autoload() == -1) 128 atf_tc_fail_errno("count not disable module autoload"); 129 130 memset(&args, 0, sizeof(args)); 131 args.ta_version = TMPFS_ARGS_VERSION; 132 args.ta_root_mode = 0777; 133 134 if (rump_sys_mkdir("/mp", 0777) == -1) 135 atf_tc_fail_errno("mkdir mountpoint"); 136 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1) 137 atf_tc_fail("mount unexpectedly succeeded"); 138 139 handle = dlopen(TMPFSMODULE, RTLD_GLOBAL); 140 if (handle == NULL) { 141 const char *dlmsg = dlerror(); 142 atf_tc_fail("cannot open %s: %s", TMPFSMODULE, dlmsg); 143 } 144 145 again: 146 mi_start = dlsym(handle, "__start_link_set_modules"); 147 mi_end = dlsym(handle, "__stop_link_set_modules"); 148 if (mi_start == NULL || mi_end == NULL) 149 atf_tc_fail("cannot find module info"); 150 if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))!=0) 151 atf_tc_fail("module init failed: %d (%s)", rv, strerror(rv)); 152 if ((rv = rump_pub_module_init(mi_start, (size_t)(mi_end-mi_start)))==0) 153 atf_tc_fail("module double init succeeded"); 154 155 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) == -1) 156 atf_tc_fail_errno("still cannot mount"); 157 if (rump_sys_unmount("/mp", 0) == -1) 158 atf_tc_fail("cannot unmount"); 159 for (i = 0; i < (int)(mi_end-mi_start); i++) { 160 if ((rv = rump_pub_module_fini(mi_start[i])) != 0) 161 atf_tc_fail("module fini failed: %d (%s)", 162 rv, strerror(rv)); 163 } 164 for (i = 0; i < (int)(mi_end-mi_start); i++) { 165 if ((rv = rump_pub_module_fini(mi_start[i])) == 0) 166 atf_tc_fail("module double fini succeeded"); 167 } 168 if (loop++ == 0) 169 goto again; 170 171 if (dlclose(handle)) { 172 const char *dlmsg = dlerror(); 173 atf_tc_fail("cannot close %s: %s", TMPFSMODULE, dlmsg); 174 } 175 176 if (rump_sys_mount(MOUNT_TMPFS, "/mp", 0, &args, sizeof(args)) != -1) 177 atf_tc_fail("mount unexpectedly succeeded"); 178 } 179 180 ATF_TP_ADD_TCS(tp) 181 { 182 ATF_TP_ADD_TC(tp, cmsg_modcmd); 183 184 return atf_no_error(); 185 } 186
Indexes created Tue Sep 30 11:09:46 GMT 2025