1*d583b39bSJohn Wren Kennedy /*
2*d583b39bSJohn Wren Kennedy * CDDL HEADER START
3*d583b39bSJohn Wren Kennedy *
4*d583b39bSJohn Wren Kennedy * The contents of this file are subject to the terms of the
5*d583b39bSJohn Wren Kennedy * Common Development and Distribution License (the "License").
6*d583b39bSJohn Wren Kennedy * You may not use this file except in compliance with the License.
7*d583b39bSJohn Wren Kennedy *
8*d583b39bSJohn Wren Kennedy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*d583b39bSJohn Wren Kennedy * or http://www.opensolaris.org/os/licensing.
10*d583b39bSJohn Wren Kennedy * See the License for the specific language governing permissions
11*d583b39bSJohn Wren Kennedy * and limitations under the License.
12*d583b39bSJohn Wren Kennedy *
13*d583b39bSJohn Wren Kennedy * When distributing Covered Code, include this CDDL HEADER in each
14*d583b39bSJohn Wren Kennedy * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*d583b39bSJohn Wren Kennedy * If applicable, add the following below this CDDL HEADER, with the
16*d583b39bSJohn Wren Kennedy * fields enclosed by brackets "[]" replaced with your own identifying
17*d583b39bSJohn Wren Kennedy * information: Portions Copyright [yyyy] [name of copyright owner]
18*d583b39bSJohn Wren Kennedy *
19*d583b39bSJohn Wren Kennedy * CDDL HEADER END
20*d583b39bSJohn Wren Kennedy */
21*d583b39bSJohn Wren Kennedy
22*d583b39bSJohn Wren Kennedy /*
23*d583b39bSJohn Wren Kennedy * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24*d583b39bSJohn Wren Kennedy * Use is subject to license terms.
25*d583b39bSJohn Wren Kennedy */
26*d583b39bSJohn Wren Kennedy
27*d583b39bSJohn Wren Kennedy /*
28*d583b39bSJohn Wren Kennedy * Copyright (c) 2012 by Delphix. All rights reserved.
29*d583b39bSJohn Wren Kennedy */
30*d583b39bSJohn Wren Kennedy
31*d583b39bSJohn Wren Kennedy /*
32*d583b39bSJohn Wren Kennedy * --------------------------------------------------------------------
33*d583b39bSJohn Wren Kennedy * The purpose of this test is to see if the bug reported (#4723351) for
34*d583b39bSJohn Wren Kennedy * UFS exists when using a ZFS file system.
35*d583b39bSJohn Wren Kennedy * --------------------------------------------------------------------
36*d583b39bSJohn Wren Kennedy *
37*d583b39bSJohn Wren Kennedy */
38*d583b39bSJohn Wren Kennedy #define _REENTRANT 1
39*d583b39bSJohn Wren Kennedy #include <stdio.h>
40*d583b39bSJohn Wren Kennedy #include <fcntl.h>
41*d583b39bSJohn Wren Kennedy #include <pthread.h>
42*d583b39bSJohn Wren Kennedy #include <thread.h>
43*d583b39bSJohn Wren Kennedy #include <errno.h>
44*d583b39bSJohn Wren Kennedy #include <sys/types.h>
45*d583b39bSJohn Wren Kennedy #include <sys/stat.h>
46*d583b39bSJohn Wren Kennedy #include <stdlib.h>
47*d583b39bSJohn Wren Kennedy #include <unistd.h>
48*d583b39bSJohn Wren Kennedy #include <strings.h>
49*d583b39bSJohn Wren Kennedy
50*d583b39bSJohn Wren Kennedy static const int TRUE = 1;
51*d583b39bSJohn Wren Kennedy static char *filebase;
52*d583b39bSJohn Wren Kennedy
53*d583b39bSJohn Wren Kennedy static int
pickidx()54*d583b39bSJohn Wren Kennedy pickidx()
55*d583b39bSJohn Wren Kennedy {
56*d583b39bSJohn Wren Kennedy return (random() % 1000);
57*d583b39bSJohn Wren Kennedy }
58*d583b39bSJohn Wren Kennedy
59*d583b39bSJohn Wren Kennedy /* ARGSUSED */
60*d583b39bSJohn Wren Kennedy static void *
mover(void * a)61*d583b39bSJohn Wren Kennedy mover(void *a)
62*d583b39bSJohn Wren Kennedy {
63*d583b39bSJohn Wren Kennedy char buf[256];
64*d583b39bSJohn Wren Kennedy int idx, len, ret;
65*d583b39bSJohn Wren Kennedy
66*d583b39bSJohn Wren Kennedy len = strlen(filebase) + 5;
67*d583b39bSJohn Wren Kennedy
68*d583b39bSJohn Wren Kennedy while (TRUE) {
69*d583b39bSJohn Wren Kennedy idx = pickidx();
70*d583b39bSJohn Wren Kennedy (void) snprintf(buf, len, "%s.%03d", filebase, idx);
71*d583b39bSJohn Wren Kennedy ret = rename(filebase, buf);
72*d583b39bSJohn Wren Kennedy if (ret < 0 && errno != ENOENT)
73*d583b39bSJohn Wren Kennedy (void) perror("renaming file");
74*d583b39bSJohn Wren Kennedy }
75*d583b39bSJohn Wren Kennedy
76*d583b39bSJohn Wren Kennedy return (NULL);
77*d583b39bSJohn Wren Kennedy }
78*d583b39bSJohn Wren Kennedy
79*d583b39bSJohn Wren Kennedy /* ARGSUSED */
80*d583b39bSJohn Wren Kennedy static void *
cleaner(void * a)81*d583b39bSJohn Wren Kennedy cleaner(void *a)
82*d583b39bSJohn Wren Kennedy {
83*d583b39bSJohn Wren Kennedy char buf[256];
84*d583b39bSJohn Wren Kennedy int idx, len, ret;
85*d583b39bSJohn Wren Kennedy
86*d583b39bSJohn Wren Kennedy len = strlen(filebase) + 5;
87*d583b39bSJohn Wren Kennedy
88*d583b39bSJohn Wren Kennedy while (TRUE) {
89*d583b39bSJohn Wren Kennedy idx = pickidx();
90*d583b39bSJohn Wren Kennedy (void) snprintf(buf, len, "%s.%03d", filebase, idx);
91*d583b39bSJohn Wren Kennedy ret = remove(buf);
92*d583b39bSJohn Wren Kennedy if (ret < 0 && errno != ENOENT)
93*d583b39bSJohn Wren Kennedy (void) perror("removing file");
94*d583b39bSJohn Wren Kennedy }
95*d583b39bSJohn Wren Kennedy
96*d583b39bSJohn Wren Kennedy return (NULL);
97*d583b39bSJohn Wren Kennedy }
98*d583b39bSJohn Wren Kennedy
99*d583b39bSJohn Wren Kennedy static void *
writer(void * a)100*d583b39bSJohn Wren Kennedy writer(void *a)
101*d583b39bSJohn Wren Kennedy {
102*d583b39bSJohn Wren Kennedy int *fd = (int *)a;
103*d583b39bSJohn Wren Kennedy
104*d583b39bSJohn Wren Kennedy while (TRUE) {
105*d583b39bSJohn Wren Kennedy (void) close (*fd);
106*d583b39bSJohn Wren Kennedy *fd = open(filebase, O_APPEND | O_RDWR | O_CREAT, 0644);
107*d583b39bSJohn Wren Kennedy if (*fd < 0)
108*d583b39bSJohn Wren Kennedy perror("refreshing file");
109*d583b39bSJohn Wren Kennedy (void) write(*fd, "test\n", 5);
110*d583b39bSJohn Wren Kennedy }
111*d583b39bSJohn Wren Kennedy
112*d583b39bSJohn Wren Kennedy return (NULL);
113*d583b39bSJohn Wren Kennedy }
114*d583b39bSJohn Wren Kennedy
115*d583b39bSJohn Wren Kennedy int
main(int argc,char ** argv)116*d583b39bSJohn Wren Kennedy main(int argc, char **argv)
117*d583b39bSJohn Wren Kennedy {
118*d583b39bSJohn Wren Kennedy int fd;
119*d583b39bSJohn Wren Kennedy pthread_t tid;
120*d583b39bSJohn Wren Kennedy
121*d583b39bSJohn Wren Kennedy if (argc == 1) {
122*d583b39bSJohn Wren Kennedy (void) printf("Usage: %s <filebase>\n", argv[0]);
123*d583b39bSJohn Wren Kennedy exit(-1);
124*d583b39bSJohn Wren Kennedy }
125*d583b39bSJohn Wren Kennedy
126*d583b39bSJohn Wren Kennedy filebase = argv[1];
127*d583b39bSJohn Wren Kennedy fd = open(filebase, O_APPEND | O_RDWR | O_CREAT, 0644);
128*d583b39bSJohn Wren Kennedy if (fd < 0) {
129*d583b39bSJohn Wren Kennedy perror("creating test file");
130*d583b39bSJohn Wren Kennedy exit(-1);
131*d583b39bSJohn Wren Kennedy }
132*d583b39bSJohn Wren Kennedy
133*d583b39bSJohn Wren Kennedy (void) thr_setconcurrency(4); /* 3 threads + main */
134*d583b39bSJohn Wren Kennedy (void) pthread_create(&tid, NULL, mover, NULL);
135*d583b39bSJohn Wren Kennedy (void) pthread_create(&tid, NULL, cleaner, NULL);
136*d583b39bSJohn Wren Kennedy (void) pthread_create(&tid, NULL, writer, (void *) &fd);
137*d583b39bSJohn Wren Kennedy
138*d583b39bSJohn Wren Kennedy while (TRUE) {
139*d583b39bSJohn Wren Kennedy int ret;
140*d583b39bSJohn Wren Kennedy struct stat st;
141*d583b39bSJohn Wren Kennedy
142*d583b39bSJohn Wren Kennedy ret = stat(filebase, &st);
143*d583b39bSJohn Wren Kennedy if (ret == 0 && (st.st_nlink > 2 || st.st_nlink < 1)) {
144*d583b39bSJohn Wren Kennedy (void) printf("st.st_nlink = %d, exiting\n", \
145*d583b39bSJohn Wren Kennedy (int)st.st_nlink);
146*d583b39bSJohn Wren Kennedy exit(0);
147*d583b39bSJohn Wren Kennedy }
148*d583b39bSJohn Wren Kennedy (void) sleep(1);
149*d583b39bSJohn Wren Kennedy }
150*d583b39bSJohn Wren Kennedy
151*d583b39bSJohn Wren Kennedy return (0);
152*d583b39bSJohn Wren Kennedy }
153