[src/trunk]: src/tests/kernel Add a testprogram for PR 47598.

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fb69add2eb01
branches:  trunk
changeset: 785169:fb69add2eb01
user:      martin <martin%NetBSD.org@localhost>
date:      Thu Feb 28 15:31:22 2013 +0000

description:
Add a testprogram for PR 47598.

diffstat:

 tests/kernel/Makefile           |    3 +-
 tests/kernel/t_kauth_pr_47598.c |  127 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+), 1 deletions(-)

diffs (148 lines):

diff -r 70231391c3bd -r fb69add2eb01 tests/kernel/Makefile
--- a/tests/kernel/Makefile     Thu Feb 28 15:23:24 2013 +0000
+++ b/tests/kernel/Makefile     Thu Feb 28 15:31:22 2013 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.31 2012/11/07 16:36:49 pgoyette Exp $
+# $NetBSD: Makefile,v 1.32 2013/02/28 15:31:22 martin Exp $
 
 NOMAN=         # defined
 
@@ -13,6 +13,7 @@
 TESTS_C+=      t_mqueue
 TESTS_C+=      t_sysv
 TESTS_C+=      t_subr_prf
+TESTS_C+=      t_kauth_pr_47598
 
 TESTS_SH=      t_umount
 TESTS_SH+=     t_ps_strings
diff -r 70231391c3bd -r fb69add2eb01 tests/kernel/t_kauth_pr_47598.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/kernel/t_kauth_pr_47598.c   Thu Feb 28 15:31:22 2013 +0000
@@ -0,0 +1,127 @@
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * 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>
+__COPYRIGHT("@(#) Copyright (c) 2013\
+ The NetBSD Foundation, inc. All rights reserved.");
+__RCSID("$NetBSD: t_kauth_pr_47598.c,v 1.1 2013/02/28 15:31:22 martin Exp $");
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/sysctl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <atf-c.h>
+
+/*
+ * PR kern/47598: if security.models.extensions.curtain = 1 we crash when
+ * doing a netstat while an embryonic (not yet fully accepted) connection
+ * exists.
+ * This has been fixed with rev. 1.5 of
+ *   src/sys/secmodel/extensions/secmodel_extensions.c.
+ */
+
+
+ATF_TC(kauth_curtain);
+ATF_TC_HEAD(kauth_curtain, tc)
+{
+       atf_tc_set_md_var(tc, "require.user", "root");
+       atf_tc_set_md_var(tc, "require.progs", "netstat");
+       atf_tc_set_md_var(tc, "descr",
+           "Checks for kernel crash with curtain active (PR kern/47598)");
+}
+
+ATF_TC_BODY(kauth_curtain, tc)
+{
+       static const char curtain_name[] = "security.models.bsd44.curtain";
+
+       int old_curtain, new_curtain = 1, s, s2, err;
+       size_t old_curtain_len = sizeof(old_curtain), slen;
+       struct sockaddr_in sa;
+
+       /*
+        * save old value of "curtain" and enable it
+        */
+       if (sysctlbyname(curtain_name, &old_curtain, &old_curtain_len,
+           &new_curtain, sizeof(new_curtain)) != 0)
+               atf_tc_fail("failed to enable %s", curtain_name);
+
+       /*
+        * create a socket and bind it to some arbitray free port
+        */
+       s = socket(PF_INET, SOCK_STREAM|SOCK_NONBLOCK, 0);
+       ATF_REQUIRE(s != -1);
+       memset(&sa, 0, sizeof(sa));
+       sa.sin_family = AF_INET;
+       sa.sin_len = sizeof(sa);
+       sa.sin_addr.s_addr = inet_addr("127.0.0.1");
+       ATF_REQUIRE(bind(s, (struct sockaddr *)&sa, sizeof(sa))==0);
+       ATF_REQUIRE(listen(s, 16)==0);
+
+       /*
+        * extract address and open a connection to the port
+        */
+       slen = sizeof(sa);
+       ATF_REQUIRE(getsockname(s, (struct sockaddr *)&sa, &slen)==0);
+       s2 = socket(PF_INET, SOCK_STREAM|SOCK_NONBLOCK, 0);
+       ATF_REQUIRE(s2 != -1);
+       printf("port is %d\n", ntohs(sa.sin_port));
+       err = connect(s2, (struct sockaddr *)&sa, sizeof(sa));
+       ATF_REQUIRE_MSG(err == -1 && errno == EINPROGRESS,
+           "conect returned %d with errno %d", err, errno);
+       fflush(stdout);
+       fflush(stderr);
+
+       /*
+        * we now have a pending, not yet accepted connection - run netstat
+        */
+       system("netstat -aA");
+
+       /*
+        * cleanup
+        */
+       close(s2);
+       close(s);
+
+       /*
+        * restore old value of curtain
+        */
+       if (sysctlbyname(curtain_name, NULL, 0,
+           &old_curtain, sizeof(old_curtain)) != 0)
+               atf_tc_fail("failed to restore %s", curtain_name);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+       ATF_TP_ADD_TC(tp, kauth_curtain);
+
+       return atf_no_error();
+}
+
+