1 /*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <sys/param.h>
29 #include <sys/stat.h>
30 #include <unistd.h>
31 #include <err.h>
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37
38 #include "stress.h"
39
40 static char path[128];
41 static unsigned long size;
42
43 int
setup(int nb)44 setup(int nb)
45 {
46 char file1[512];
47 int64_t in;
48 int64_t bl;
49 int64_t reserve_in;
50 int64_t reserve_bl;
51 int i;
52
53 umask(0);
54
55 if (nb == 0) {
56 getdf(&bl, &in);
57 size = in / op->incarnations;
58
59 if (size > 1000)
60 size = 1000; /* arbitrary limit number of files pr. dir */
61
62 /* Resource requirements: */
63 while (size > 0) {
64 reserve_in = 2 * size * op->incarnations + 2 * op->incarnations;
65 reserve_bl = 30 * size * op->incarnations;
66 if (reserve_bl <= bl && reserve_in <= in)
67 break;
68 size = size / 2;
69 }
70 if (size == 0)
71 reserve_bl = reserve_in = 0;
72
73 if (op->verbose > 1)
74 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n",
75 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in);
76 reservedf(reserve_bl, reserve_in);
77 putval(size);
78 } else {
79 size = getval();
80 }
81 if (size == 0)
82 exit(0);
83
84 sprintf(path, "%s.%05d", getprogname(), getpid());
85 if (mkdir(path, 0770) == -1)
86 err(1, "mkdir(%s), %s:%d", path, __FILE__, __LINE__);
87
88 /*
89 * The value 97 was determined by figuring out how many 255 length
90 * names would cause us to overflow into indirect blocks w/ the
91 * default UFS parameters.
92 */
93 for (i = 0; i < 97; i++) {
94 sprintf(file1, "%s/%0255d", path, i);
95 if (mkdir(file1, 0770) == -1)
96 err(1, "mkdir(%s), %s:%d", file1, __FILE__, __LINE__);
97 }
98 return (0);
99 }
100
101 void
cleanup(void)102 cleanup(void)
103 {
104 char file1[512];
105 int i;
106
107 /* see comment above */
108 for (i = 0; i < 97; i++) {
109 sprintf(file1, "%s/%0255d", path, i);
110 if (rmdir(file1) == -1)
111 warn("rmdir(%s), %s:%d", file1, __FILE__, __LINE__);
112 }
113 if (rmdir(path) == -1)
114 warn("rmdir(%s), %s:%d", path, __FILE__, __LINE__);
115 }
116
117 static void
test_rename(void)118 test_rename(void)
119 {
120 int i, j;
121 int errnotmp;
122 pid_t pid;
123 char file1[128];
124 char file2[128];
125
126 pid = getpid();
127 for (i = 0; i < (int)size; i++) {
128 sprintf(file1,"p%05d.%05d", pid, i);
129 if (mkdir(file1, 0660) == -1) {
130 j = i;
131 errnotmp = errno;
132 while (j > 0) {
133 j--;
134 sprintf(file1,"p%05d.%05d", pid, j);
135 rmdir(file1);
136 }
137 errno = errnotmp;
138 sprintf(file1,"p%05d.%05d", pid, i);
139 err(1, "mkdir(%s), %s:%d", file1, __FILE__, __LINE__);
140 }
141 }
142 for (j = 0; j < 100 && done_testing == 0; j++) {
143 for (i = 0; i < (int)size; i++) {
144 sprintf(file1,"p%05d.%05d", pid, i);
145 sprintf(file2,"%s/p%05d.%05d.togo", path, pid, i);
146 if (rename(file1, file2) == -1)
147 err(1, "rename(%s, %s). %s:%d", file1, file2,
148 __FILE__, __LINE__);
149 }
150 for (i = 0; i < (int)size; i++) {
151 sprintf(file1,"p%05d.%05d", pid, i);
152 sprintf(file2,"%s/p%05d.%05d.togo", path, pid, i);
153 if (rename(file2, file1) == -1)
154 err(1, "rename(%s, %s). %s:%d", file2, file1,
155 __FILE__, __LINE__);
156 }
157 }
158
159 for (i = 0; i < (int)size; i++) {
160 sprintf(file1,"p%05d.%05d", pid, i);
161 if (rmdir(file1) == -1)
162 err(1, "rmdir(%s), %s:%d", file1, __FILE__, __LINE__);
163 }
164 }
165
166 int
test(void)167 test(void)
168 {
169 test_rename();
170
171 return (0);
172 }
173