Differential D20901 Diff 59787 head/tests/sys/kern/ptrace_test.c

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head/tests/sys/kern/ptrace_test.c

Show First 20 Lines • Show All 3,899 Lines • ▼ Show 20 Lines	ATF_TC_BODY(ptrace__PT_LWPINFO_stale_siginfo, tc)
ATF_REQUIRE(WEXITSTATUS(status) == 1);		ATF_REQUIRE(WEXITSTATUS(status) == 1);

wpid = wait(&status);		wpid = wait(&status);
ATF_REQUIRE(wpid == -1);		ATF_REQUIRE(wpid == -1);
ATF_REQUIRE(errno == ECHILD);		ATF_REQUIRE(errno == ECHILD);
}		}

/*		/*
* A simple test of PT_GET_SC_ARGS.		* A simple test of PT_GET_SC_ARGS and PT_GET_SC_RET.
*/		*/
ATF_TC_WITHOUT_HEAD(ptrace__syscall_args);		ATF_TC_WITHOUT_HEAD(ptrace__syscall_args);
ATF_TC_BODY(ptrace__syscall_args, tc)		ATF_TC_BODY(ptrace__syscall_args, tc)
{		{
struct ptrace_lwpinfo pl;		struct ptrace_lwpinfo pl;
		struct ptrace_sc_ret psr;
pid_t fpid, wpid;		pid_t fpid, wpid;
register_t args[2];		register_t args[2];
int events, status;		int events, status;

ATF_REQUIRE((fpid = fork()) != -1);		ATF_REQUIRE((fpid = fork()) != -1);
if (fpid == 0) {		if (fpid == 0) {
trace_me();		trace_me();
kill(getpid(), 0);		kill(getpid(), 0);
		close(3);
exit(1);		exit(1);
}		}

/* The first wait() should report the stop from SIGSTOP. */		/* The first wait() should report the stop from SIGSTOP. */
wpid = waitpid(fpid, &status, 0);		wpid = waitpid(fpid, &status, 0);
ATF_REQUIRE(wpid == fpid);		ATF_REQUIRE(wpid == fpid);
ATF_REQUIRE(WIFSTOPPED(status));		ATF_REQUIRE(WIFSTOPPED(status));
ATF_REQUIRE(WSTOPSIG(status) == SIGSTOP);		ATF_REQUIRE(WSTOPSIG(status) == SIGSTOP);

/*		/*
* Continue the process ignoring the signal, but enabling		* Continue the process ignoring the signal, but enabling
* syscall entry traps.		* syscall traps.
*/		*/
ATF_REQUIRE(ptrace(PT_TO_SCE, fpid, (caddr_t)1, 0) == 0);		ATF_REQUIRE(ptrace(PT_SYSCALL, fpid, (caddr_t)1, 0) == 0);

/*		/*
* The next stop should be the syscall entry from getpid().		* The next stop should be the syscall entry from getpid().
*/		*/
wpid = waitpid(fpid, &status, 0);		wpid = waitpid(fpid, &status, 0);
ATF_REQUIRE(wpid == fpid);		ATF_REQUIRE(wpid == fpid);
ATF_REQUIRE(WIFSTOPPED(status));		ATF_REQUIRE(WIFSTOPPED(status));
ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE);		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE);
ATF_REQUIRE(pl.pl_syscall_code == SYS_getpid);		ATF_REQUIRE(pl.pl_syscall_code == SYS_getpid);

ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);

/*		/*
		* The next stop should be the syscall exit from getpid().
		*/
		wpid = waitpid(fpid, &status, 0);
		ATF_REQUIRE(wpid == fpid);
		ATF_REQUIRE(WIFSTOPPED(status));
		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCX);
		ATF_REQUIRE(pl.pl_syscall_code == SYS_getpid);

		ATF_REQUIRE(ptrace(PT_GET_SC_RET, wpid, (caddr_t)&psr,
		sizeof(psr)) != -1);
		ATF_REQUIRE(psr.sr_error == 0);
		ATF_REQUIRE(psr.sr_retval[0] == wpid);

		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);

		/*
* The next stop should be the syscall entry from kill().		* The next stop should be the syscall entry from kill().
*/		*/
wpid = waitpid(fpid, &status, 0);		wpid = waitpid(fpid, &status, 0);
ATF_REQUIRE(wpid == fpid);		ATF_REQUIRE(wpid == fpid);
ATF_REQUIRE(WIFSTOPPED(status));		ATF_REQUIRE(WIFSTOPPED(status));
ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE);		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE);
ATF_REQUIRE(pl.pl_syscall_code == SYS_kill);		ATF_REQUIRE(pl.pl_syscall_code == SYS_kill);
ATF_REQUIRE(pl.pl_syscall_narg == 2);		ATF_REQUIRE(pl.pl_syscall_narg == 2);

ATF_REQUIRE(ptrace(PT_GET_SC_ARGS, wpid, (caddr_t)args,		ATF_REQUIRE(ptrace(PT_GET_SC_ARGS, wpid, (caddr_t)args,
sizeof(args)) != -1);		sizeof(args)) != -1);
ATF_REQUIRE(args[0] == wpid);		ATF_REQUIRE(args[0] == wpid);
ATF_REQUIRE(args[1] == 0);		ATF_REQUIRE(args[1] == 0);

		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);

		/*
		* The next stop should be the syscall exit from kill().
		*/
		wpid = waitpid(fpid, &status, 0);
		ATF_REQUIRE(wpid == fpid);
		ATF_REQUIRE(WIFSTOPPED(status));
		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCX);
		ATF_REQUIRE(pl.pl_syscall_code == SYS_kill);

		ATF_REQUIRE(ptrace(PT_GET_SC_RET, wpid, (caddr_t)&psr,
		sizeof(psr)) != -1);
		ATF_REQUIRE(psr.sr_error == 0);

		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);

		/*
		* The next stop should be the syscall entry from close().
		*/
		wpid = waitpid(fpid, &status, 0);
		ATF_REQUIRE(wpid == fpid);
		ATF_REQUIRE(WIFSTOPPED(status));
		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE);
		ATF_REQUIRE(pl.pl_syscall_code == SYS_close);
		ATF_REQUIRE(pl.pl_syscall_narg == 1);

		ATF_REQUIRE(ptrace(PT_GET_SC_ARGS, wpid, (caddr_t)args,
		sizeof(args)) != -1);
		ATF_REQUIRE(args[0] == 3);

		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);

		/*
		* The next stop should be the syscall exit from close().
		*/
		wpid = waitpid(fpid, &status, 0);
		ATF_REQUIRE(wpid == fpid);
		ATF_REQUIRE(WIFSTOPPED(status));
		ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);

		ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
		ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCX);
		ATF_REQUIRE(pl.pl_syscall_code == SYS_close);

		ATF_REQUIRE(ptrace(PT_GET_SC_RET, wpid, (caddr_t)&psr,
		sizeof(psr)) != -1);
		ATF_REQUIRE(psr.sr_error == EBADF);

/* Disable syscall tracing and continue the child to let it exit. */		/* Disable syscall tracing and continue the child to let it exit. */
ATF_REQUIRE(ptrace(PT_GET_EVENT_MASK, fpid, (caddr_t)&events,		ATF_REQUIRE(ptrace(PT_GET_EVENT_MASK, fpid, (caddr_t)&events,
sizeof(events)) == 0);		sizeof(events)) == 0);
events &= ~PTRACE_SYSCALL;		events &= ~PTRACE_SYSCALL;
ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, fpid, (caddr_t)&events,		ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, fpid, (caddr_t)&events,
sizeof(events)) == 0);		sizeof(events)) == 0);
ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);		ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);
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