1 /* $NetBSD: t_mountd.c,v 1.6 2017/01/13 21:30:40 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/types.h> 29 #include <sys/mount.h> 30 31 #include <atf-c.h> 32 #include <errno.h> 33 #include <fcntl.h> 34 #include <pthread.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <unistd.h> 38 #include <string.h> 39 #include <signal.h> 40 41 #include <rump/rump.h> 42 #include <rump/rump_syscalls.h> 43 44 #include "h_macros.h" 45 #include "../common/h_fsmacros.h" 46 47 ATF_TC(mountdhup); 48 ATF_TC_HEAD(mountdhup, tc) 49 { 50 51 atf_tc_set_md_var(tc, "descr", "test for service interrupt while " 52 "mountd handles SIGHUP"); 53 } 54 55 static volatile int quit; 56 57 static void * 58 wrkwrkwrk(void *unused) 59 { 60 int fd, fail; 61 62 fail = 0; 63 64 rump_sys_chdir(FSTEST_MNTNAME); 65 while (!quit) { 66 fd = rump_sys_open("file", O_RDWR | O_CREAT); 67 if (fd == -1) { 68 if (errno == EACCES) { 69 fail++; 70 break; 71 } 72 } 73 rump_sys_close(fd); 74 if (rump_sys_unlink("file") == -1) { 75 if (errno == EACCES) { 76 fail++; 77 break; 78 } 79 } 80 } 81 rump_sys_chdir("/"); 82 quit = 1; 83 84 return fail ? wrkwrkwrk : NULL; 85 } 86 87 ATF_TC_BODY(mountdhup, tc) 88 { 89 pthread_t pt; 90 struct nfstestargs *nfsargs; 91 void *voidargs; 92 int attempts; 93 void *fail; 94 95 FSTEST_CONSTRUCTOR(tc, nfs, voidargs); 96 nfsargs = voidargs; 97 98 pthread_create(&pt, NULL, wrkwrkwrk, NULL); 99 for (attempts = 100; attempts && !quit; attempts--) { 100 usleep(100000); 101 kill(nfsargs->ta_childpid, SIGHUP); 102 } 103 quit = 1; 104 pthread_join(pt, &fail); 105 106 FSTEST_DESTRUCTOR(tc, nfs, voidargs); 107 108 atf_tc_expect_fail("PR kern/5844"); 109 if (fail) 110 atf_tc_fail("op failed with EACCES"); 111 else 112 atf_tc_fail("race did not trigger this time"); 113 } 114 115 ATF_TP_ADD_TCS(tp) 116 { 117 118 ATF_TP_ADD_TC(tp, mountdhup); 119 120 return atf_no_error(); 121 } 122