vendor/NetBSD/tests/2026.02.14_2vendor/NetBSD/tests

1 files changed, 88 insertions, 0 deletions

diff --git a/lib/libexecinfo/t_backtrace_sandbox.c b/lib/libexecinfo/t_backtrace_sandbox.c
new file mode 100644
index 000000000000..51d650c3424a
--- /dev/null
+++ b/lib/libexecinfo/t_backtrace_sandbox.c
@@ -0,0 +1,88 @@
+/*	$NetBSD: t_backtrace_sandbox.c,v 1.3 2025/01/30 16:13:51 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2025 Kyle Evans <kevans@FreeBSD.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_backtrace_sandbox.c,v 1.3 2025/01/30 16:13:51 christos Exp $");
+
+#include <sys/param.h>
+#include <sys/wait.h>
+#ifdef __FreeBSD__
+#include <sys/capsicum.h>
+#define __arraycount(a) nitems(a)
+#endif
+
+#include <execinfo.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <atf-c.h>
+
+#define	BT_FUNCTIONS		10
+
+ATF_TC(backtrace_sandbox);
+ATF_TC_HEAD(backtrace_sandbox, tc)
+{
+        atf_tc_set_md_var(tc, "descr",
+	    "Test backtrace_sandbox_init(3) in sandbox");
+#ifndef __FreeBSD__
+	atf_tc_set_md_var(tc, "require.user", "root");
+#endif
+}
+
+ATF_TC_BODY(backtrace_sandbox, tc)
+{
+	void *addr[BT_FUNCTIONS];
+	char **syms;
+	size_t frames;
+	pid_t pid;
+	int status;
+
+	frames = backtrace(addr, __arraycount(addr));
+	ATF_REQUIRE(frames > 0);
+
+	syms = backtrace_symbols_fmt(addr, frames, "%n");
+	ATF_REQUIRE(strcmp(syms[0], "atfu_backtrace_sandbox_body") == 0);
+
+	pid = fork();
+	ATF_REQUIRE(pid >= 0);
+
+	if (pid == 0) {
+
+		backtrace_sandbox_init();
+#ifdef __FreeBSD__
+		cap_enter();
+#else
+		if (chroot("/tmp") != 0)
+			_exit(EXIT_FAILURE);
+#endif
+
+		syms = backtrace_symbols_fmt(addr, frames, "%n");
+		if (strcmp(syms[0], "atfu_backtrace_sandbox_body") != 0)
+			_exit(EXIT_FAILURE);
+
+		backtrace_sandbox_fini();
+
+		_exit(EXIT_SUCCESS);
+	}
+
+	(void)wait(&status);
+
+	if (!WIFEXITED(status) || WEXITSTATUS(status) != EXIT_SUCCESS)
+		atf_tc_fail("resolving symbols in chroot failed");
+
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, backtrace_sandbox);
+
+	return atf_no_error();
+}