1/* $NetBSD: t_ptrace_misc_wait.h,v 1.1 2020/05/05 02:06:08 kamil Exp $ */ 2 3/*- 4 * Copyright (c) 2016, 2017, 2018, 2019, 2020 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 CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29static void 30user_va0_disable(int operation) 31{ 32 pid_t child, wpid; 33#if defined(TWAIT_HAVE_STATUS) 34 int status; 35#endif 36 const int sigval = SIGSTOP; 37 int rv; 38 39 struct ptrace_siginfo info; 40 41 if (get_user_va0_disable() == 0) 42 atf_tc_skip("vm.user_va0_disable is set to 0"); 43 44 memset(&info, 0, sizeof(info)); 45 46 DPRINTF("Before forking process PID=%d\n", getpid()); 47 SYSCALL_REQUIRE((child = fork()) != -1); 48 if (child == 0) { 49 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 50 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 51 52 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 53 FORKEE_ASSERT(raise(sigval) == 0); 54 55 /* NOTREACHED */ 56 FORKEE_ASSERTX(0 && "This shall not be reached"); 57 __unreachable(); 58 } 59 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 60 61 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 62 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 63 64 validate_status_stopped(status, sigval); 65 66 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for " 67 "child\n"); 68 SYSCALL_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, 69 sizeof(info)) != -1); 70 71 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 72 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 73 "si_errno=%#x\n", 74 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 75 info.psi_siginfo.si_errno); 76 77 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 78 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 79 80 DPRINTF("Before resuming the child process in PC=0x0 " 81 "and without signal to be sent\n"); 82 errno = 0; 83 rv = ptrace(operation, child, (void *)0, 0); 84 ATF_REQUIRE_EQ(errno, EINVAL); 85 ATF_REQUIRE_EQ(rv, -1); 86 87 SYSCALL_REQUIRE(ptrace(PT_KILL, child, NULL, 0) != -1); 88 89 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 90 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 91 validate_status_signaled(status, SIGKILL, 0); 92 93 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 94 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 95} 96 97#define USER_VA0_DISABLE(test, operation) \ 98ATF_TC(test); \ 99ATF_TC_HEAD(test, tc) \ 100{ \ 101 atf_tc_set_md_var(tc, "descr", \ 102 "Verify behavior of " #operation " with PC set to 0x0"); \ 103} \ 104 \ 105ATF_TC_BODY(test, tc) \ 106{ \ 107 \ 108 user_va0_disable(operation); \ 109} 110 111USER_VA0_DISABLE(user_va0_disable_pt_continue, PT_CONTINUE) 112USER_VA0_DISABLE(user_va0_disable_pt_syscall, PT_SYSCALL) 113USER_VA0_DISABLE(user_va0_disable_pt_detach, PT_DETACH) 114 115#define ATF_TP_ADD_TCS_PTRACE_WAIT_MISC() \ 116 ATF_TP_ADD_TC(tp, user_va0_disable_pt_continue); \ 117 ATF_TP_ADD_TC(tp, user_va0_disable_pt_syscall); \ 118 ATF_TP_ADD_TC(tp, user_va0_disable_pt_detach); 119