1 /*- 2 * Copyright (c) 2006 Bruce M. Simpson 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 /* 28 * Regression test for uiomove in kernel; specifically for PR kern/38495. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <sys/un.h> 34 35 #include <stdlib.h> 36 #include <signal.h> 37 #include <setjmp.h> 38 #include <string.h> 39 #include <err.h> 40 #include <errno.h> 41 #include <unistd.h> 42 43 static char socket_path[] = "tmp.XXXXXX"; 44 45 static jmp_buf myjmpbuf; 46 47 static void handle_sigalrm(int signo __unused) 48 { 49 longjmp(myjmpbuf, 1); 50 } 51 52 int 53 main(void) 54 { 55 struct sockaddr_un un; 56 pid_t pid; 57 int s; 58 59 if (mkstemp(socket_path) == -1) 60 err(1, "mkstemp"); 61 s = socket(PF_LOCAL, SOCK_DGRAM, 0); 62 if (s == -1) 63 errx(-1, "socket"); 64 memset(&un, 0, sizeof(un)); 65 un.sun_family = AF_LOCAL; 66 unlink(socket_path); 67 strcpy(un.sun_path, socket_path); 68 if (bind(s, (struct sockaddr *)&un, sizeof(un)) == -1) 69 errx(-1, "bind"); 70 pid = fork(); 71 if (pid == -1) 72 errx(-1, "fork"); 73 if (pid == 0) { 74 int conn; 75 char buf[] = "AAAAAAAAA"; 76 77 close(s); 78 conn = socket(AF_LOCAL, SOCK_DGRAM, 0); 79 if (conn == -1) 80 errx(-1,"socket"); 81 if (sendto(conn, buf, sizeof(buf), 0, (struct sockaddr *)&un, 82 sizeof(un)) != sizeof(buf)) 83 errx(-1,"sendto"); 84 close(conn); 85 _exit(0); 86 } 87 88 sleep(5); 89 90 /* Make sure the data is there when we try to receive it. */ 91 if (recvfrom(s, (void *)-1, 1, 0, NULL, NULL) != -1) 92 errx(-1,"recvfrom succeeded when failure expected"); 93 94 (void)signal(SIGALRM, handle_sigalrm); 95 if (setjmp(myjmpbuf) == 0) { 96 /* 97 * This recvfrom will panic an unpatched system, and block 98 * a patched one. 99 */ 100 alarm(5); 101 (void)recvfrom(s, (void *)-1, 1, 0, NULL, NULL); 102 } 103 104 /* We should reach here via longjmp() and all should be well. */ 105 106 return (0); 107 } 108