diff options
Diffstat (limited to 'lib/libc/sys/t_ptrace_kill.c')
| -rw-r--r-- | lib/libc/sys/t_ptrace_kill.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/lib/libc/sys/t_ptrace_kill.c b/lib/libc/sys/t_ptrace_kill.c new file mode 100644 index 000000000000..fdd6298c2a8a --- /dev/null +++ b/lib/libc/sys/t_ptrace_kill.c @@ -0,0 +1,131 @@ +/* $NetBSD: t_ptrace_kill.c,v 1.2 2025/05/02 02:24:32 riastradh Exp $ */ + +/*- + * Copyright (c) 2024 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_ptrace_kill.c,v 1.2 2025/05/02 02:24:32 riastradh Exp $"); + +#include <sys/types.h> +#include <sys/ptrace.h> +#include <sys/wait.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <signal.h> +#include <unistd.h> +#include <errno.h> +#include <err.h> +#include <atf-c.h> + +#define SYSCALL(a, b) ATF_REQUIRE_EQ_MSG(a, b, "%s got %s", #a, strerror(errno)) + +ATF_TC(pt_kill); +ATF_TC_HEAD(pt_kill, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test PT_KILL of a PT_STOP'ed process"); +} + +static void +child(int *fdto, int *fdfrom) +{ + char p = '2', q; + printf("%d: born\n", getpid()); + write(fdfrom[1], &p, 1); + read(fdto[0], &q, 1); + printf("%d: seppuku %c\n", getpid(), q); + write(fdfrom[1], &p, 1); + read(fdto[0], &q, 1); +// *(int *)1 = 0; +// kill(getpid(), SIGSEGV); +// kill(getpid(), SIGSTOP); + for (;;) + sleep(1); + +} + +static void * +waitthread(void *pidp) +{ + int status = 0; + pid_t rpid, pid; + + pid = *(pid_t *)pidp; + printf("waiting for %d\n", pid); + while ((rpid = waitpid(pid, &status, 0)) != pid) { + printf("waitpid %d = %d status = %#x", pid, rpid, status); + } + printf("done waitpid %d = %d status = %#x", pid, rpid, status); + return NULL; +} + +ATF_TC_BODY(pt_kill, tc) +{ + pid_t pid; + int fdto[2], fdfrom[2]; + char p = '1', q; + int status; + pthread_t thread; + + SYSCALL(pipe(fdto), 0); + SYSCALL(pipe(fdfrom), 0); + switch (pid = fork()) { + case 0: + child(fdto, fdfrom); + break; + case -1: + err(EXIT_FAILURE, "fork failed"); + default: + SYSCALL(pthread_create(&thread, NULL, waitthread, &pid), 0); + sleep(1); // XXX: too lazy to sync properly + SYSCALL(read(fdfrom[0], &q, 1), 1); + printf("%d: read %c\n", pid, q); + SYSCALL(ptrace(PT_ATTACH, pid, NULL, 0), 0); + printf("%d: attached\n", pid); + SYSCALL(write(fdto[1], &p, 1), 1); + waitpid(pid, NULL, WNOHANG); + printf("%d: sent\n", pid); + SYSCALL(ptrace(PT_CONTINUE, pid, (void *)1, 0), 0); + SYSCALL(read(fdfrom[0], &p, 1), 1); + printf("%d: received\n", pid); + SYSCALL(ptrace(PT_STOP, pid, NULL, 0), 0); + SYSCALL(ptrace(PT_KILL, pid, NULL, 0), 0); + SYSCALL(waitpid(pid, &status, 0), pid); + ATF_REQUIRE(status == 9); + break; + } +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, pt_kill); + + return atf_no_error(); +} |