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 <err.h>
31 #include <fcntl.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36
37 #include "stress.h"
38
39 static unsigned long size;
40
41 int
setup(int nb)42 setup(int nb)
43 {
44 int64_t in;
45 int64_t bl;
46 int64_t reserve_in;
47 int64_t reserve_bl;
48
49 umask(0);
50
51 if (nb == 0) {
52 getdf(&bl, &in);
53 size = in / op->incarnations;
54
55 if (size > 1000)
56 size = 1000; /* arbitrary limit number of files pr. dir */
57
58 /* Resource requirements: */
59 while (size > 0) {
60 reserve_in = 2 * size * op->incarnations + 2 * op->incarnations;
61 reserve_bl = 30 * size * op->incarnations;
62 if (reserve_bl <= bl && reserve_in <= in)
63 break;
64 size = size / 2;
65 }
66 if (size == 0)
67 reserve_bl = reserve_in = 0;
68
69 if (op->verbose > 1)
70 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n",
71 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in);
72 reservedf(reserve_bl, reserve_in);
73 putval(size);
74 } else {
75 size = getval();
76 }
77 if (size == 0)
78 exit(0);
79
80 return (0);
81 }
82
83 void
cleanup(void)84 cleanup(void)
85 {
86 }
87
88 static void
test_rename(void)89 test_rename(void)
90 {
91 int i, j;
92 pid_t pid;
93 char file1[128];
94 char file2[128];
95 int tfd;
96
97 pid = getpid();
98 for (i = 0; i < (int)size; i++) {
99 sprintf(file1,"p%05d.%05d", pid, i);
100 if ((tfd = open(file1, O_RDONLY|O_CREAT, 0660)) == -1)
101 err(1, "openat(%s), %s:%d", file1, __FILE__, __LINE__);
102 close(tfd);
103 }
104 for (j = 0; j < 100 && done_testing == 0; j++) {
105 for (i = 0; i < (int)size; i++) {
106 sprintf(file1,"p%05d.%05d", pid, i);
107 sprintf(file2,"p%05d.%05d.togo", pid, i);
108 if (rename(file1, file2) == -1)
109 err(1, "rename(%s, %s). %s:%d", file1, file2,
110 __FILE__, __LINE__);
111 }
112 for (i = 0; i < (int)size; i++) {
113 sprintf(file1,"p%05d.%05d", pid, i);
114 sprintf(file2,"p%05d.%05d.togo", pid, i);
115 if (rename(file2, file1) == -1)
116 err(1, "rename(%s, %s). %s:%d", file2, file1,
117 __FILE__, __LINE__);
118 }
119 }
120
121 for (i = 0; i < (int)size; i++) {
122 sprintf(file1,"p%05d.%05d", pid, i);
123 if (unlink(file1) == -1)
124 err(1, "unlink(%s), %s:%d", file1, __FILE__, __LINE__);
125 }
126 }
127
128 int
test(void)129 test(void)
130 {
131 test_rename();
132
133 return (0);
134 }
135