1/*	$NetBSD: t_mountd.c,v 1.6 2017/01/13 21:30:40 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/types.h>
29#include <sys/mount.h>
30
31#include <atf-c.h>
32#include <errno.h>
33#include <fcntl.h>
34#include <pthread.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <unistd.h>
38#include <string.h>
39#include <signal.h>
40
41#include <rump/rump.h>
42#include <rump/rump_syscalls.h>
43
44#include "h_macros.h"
45#include "../common/h_fsmacros.h"
46
47ATF_TC(mountdhup);
48ATF_TC_HEAD(mountdhup, tc)
49{
50
51	atf_tc_set_md_var(tc, "descr", "test for service interrupt while "
52	    "mountd handles SIGHUP");
53}
54
55static volatile int quit;
56
57static void *
58wrkwrkwrk(void *unused)
59{
60	int fd, fail;
61
62	fail = 0;
63
64	rump_sys_chdir(FSTEST_MNTNAME);
65	while (!quit) {
66		fd = rump_sys_open("file", O_RDWR | O_CREAT);
67		if (fd == -1) {
68			if (errno == EACCES) {
69				fail++;
70				break;
71			}
72		}
73		rump_sys_close(fd);
74		if (rump_sys_unlink("file") == -1) {
75			if (errno == EACCES) {
76				fail++;
77				break;
78			}
79		}
80	}
81	rump_sys_chdir("/");
82	quit = 1;
83
84	return fail ? wrkwrkwrk : NULL;
85}
86
87ATF_TC_BODY(mountdhup, tc)
88{
89	pthread_t pt;
90	struct nfstestargs *nfsargs;
91	void *voidargs;
92	int attempts;
93	void *fail;
94
95	FSTEST_CONSTRUCTOR(tc, nfs, voidargs);
96	nfsargs = voidargs;
97
98	pthread_create(&pt, NULL, wrkwrkwrk, NULL);
99	for (attempts = 100; attempts && !quit; attempts--) {
100		usleep(100000);
101		kill(nfsargs->ta_childpid, SIGHUP);
102	}
103	quit = 1;
104	pthread_join(pt, &fail);
105
106	FSTEST_DESTRUCTOR(tc, nfs, voidargs);
107
108	atf_tc_expect_fail("PR kern/5844");
109	if (fail)
110		atf_tc_fail("op failed with EACCES");
111	else
112		atf_tc_fail("race did not trigger this time");
113}
114
115ATF_TP_ADD_TCS(tp)
116{
117
118	ATF_TP_ADD_TC(tp, mountdhup);
119
120	return atf_no_error();
121}
122