1 /*- 2 * Copyright (c) 2016 Maksym Sobolyev 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/stat.h> 28 #include <dlfcn.h> 29 #include <errno.h> 30 #include <fcntl.h> 31 #include <signal.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <unistd.h> 35 36 #include <atf-c.h> 37 38 static const char *funname; 39 static char *soname; 40 41 static void 42 sigsegv_handler(int sig __unused) 43 { 44 unlink(soname); 45 free(soname); 46 atf_tc_fail("got SIGSEGV in the %s(3)", funname); 47 } 48 49 ATF_TC(dlopen_empty_test); 50 ATF_TC_HEAD(dlopen_empty_test, tc) 51 { 52 atf_tc_set_md_var(tc, "descr", "Tests the dlopen() of an empty file " 53 "returns an error"); 54 } 55 ATF_TC_BODY(dlopen_empty_test, tc) 56 { 57 char tempname[] = "/tmp/temp.XXXXXX"; 58 char *fname; 59 int fd; 60 void *dlh; 61 struct sigaction act, oact; 62 63 fname = mktemp(tempname); 64 ATF_REQUIRE_MSG(fname != NULL, "mktemp failed; errno=%d", errno); 65 asprintf(&soname, "%s.so", fname); 66 ATF_REQUIRE_MSG(soname != NULL, "asprintf failed; errno=%d", ENOMEM); 67 fd = open(soname, O_WRONLY | O_CREAT | O_TRUNC, DEFFILEMODE); 68 ATF_REQUIRE_MSG(fd != -1, "open(\"%s\") failed; errno=%d", soname, errno); 69 close(fd); 70 71 act.sa_handler = sigsegv_handler; 72 act.sa_flags = 0; 73 sigemptyset(&act.sa_mask); 74 ATF_CHECK_MSG(sigaction(SIGSEGV, &act, &oact) != -1, 75 "sigaction() failed"); 76 77 funname = "dlopen"; 78 dlh = dlopen(soname, RTLD_LAZY); 79 if (dlh != NULL) { 80 funname = "dlclose"; 81 dlclose(dlh); 82 } 83 ATF_REQUIRE_MSG(dlh == NULL, "dlopen(\"%s\") did not fail", soname); 84 unlink(soname); 85 free(soname); 86 } 87 88 ATF_TP_ADD_TCS(tp) 89 { 90 91 ATF_TP_ADD_TC(tp, dlopen_empty_test); 92 93 return (atf_no_error()); 94 } 95