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/types.h>
29 #include <sys/errno.h>
30 #include <sys/param.h>
31 #include <sys/stat.h>
32 #include <sys/sysctl.h>
33
34 #include <err.h>
35 #include <fcntl.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40
41 extern char *optarg;
42 static pid_t pid;
43 static int edirs, dirs, files, fs;
44 static int max, rnd;
45 static char *buffer;
46 static char here[MAXPATHLEN + 1];
47
48 static void
mkDir2(char * path)49 mkDir2(char *path) {
50 int fd, i, j, len;
51 char newPath[MAXPATHLEN + 1];
52 char file[128];
53
54 if (mkdir(path, 0700) == -1)
55 err(1, "mkdir(%s)", path);
56 if (chdir(path) == -1)
57 err(1, "chdir(%s) @ %d", path, __LINE__);
58
59 for (i = 0; i < max; i++) {
60 sprintf(newPath,"d%d", i);
61 if (mkdir(newPath, 0700) == -1)
62 err(1, "mkdir(%s) @ %d", newPath, __LINE__);
63 if (chdir(newPath) == -1)
64 err(1, "chdir(%s) @ %d", newPath, __LINE__);
65
66 len = fs;
67 for (j = 0; j < files; j++) {
68 if (rnd)
69 len = arc4random() % fs + 1;
70 sprintf(file,"f%05d", j);
71 if ((fd = creat(file, 0660)) == -1) {
72 if (errno != EINTR) {
73 err(1, "%d: creat(%s)", j, file);
74 break;
75 }
76 }
77 if (write(fd, buffer, len) != len)
78 err(1, "%d: write(%s), %s:%d", j, file, __FILE__, __LINE__);
79
80 if (fd != -1 && close(fd) == -1)
81 err(2, "%d: close(%d)", j, j);
82
83 }
84 for (j = 0; j < edirs; j++) {
85 sprintf(newPath,"e%d", j);
86 if (mkdir(newPath, 0700) == -1)
87 err(1, "mkdir(%s) @ %d", newPath, __LINE__);
88 }
89 }
90 chdir(here);
91 }
92
93 static void
mkDir(void)94 mkDir(void) {
95 int i;
96 char path[MAXPATHLEN + 1];
97
98 for (i = 0; i < dirs; i++) {
99 sprintf(path,"fstool.%06d.%d", pid, i);
100 mkDir2(path);
101 }
102 }
103
104 static void
rmFile(void)105 rmFile(void)
106 {
107 int j;
108 char file[128], newPath[128];
109
110 for (j = 0; j < files; j++) {
111 sprintf(file,"f%05d", j);
112 (void) unlink(file);
113 }
114 for (j = 0; j < edirs; j++) {
115 sprintf(newPath,"e%d", j);
116 if (rmdir(newPath) == -1)
117 err(1, "rmdir(%s) @ %d", newPath, __LINE__);
118 }
119 }
120
121 static void
rmDir2(char * path)122 rmDir2(char *path) {
123 int i, j;
124 char newPath[10];
125
126 if (chdir(path) == -1)
127 err(1, "chdir(%s)", path);
128
129 for (i = 0; i < max; i++) {
130 sprintf(newPath,"d%d", i);
131 if (chdir(newPath) == -1)
132 err(1, "chdir(%s)", newPath);
133 }
134 for (j = 0; j < max; j++) {
135 rmFile();
136 if (chdir ("..") == -1)
137 err(1, "chdir(\"..\")");
138 sprintf(newPath,"d%d", max - j - 1);
139 if (rmdir(newPath) == -1)
140 err(1, "rmdir(%s) @ %d", newPath, __LINE__);
141 }
142 if (chdir ("..") == -1)
143 err(1, "chdir(\"..\")");
144 if (rmdir(path) == -1)
145 err(1, "rmdir(%s) @ %d", path, __LINE__);
146 }
147
148 static void
rmDir(void)149 rmDir(void) {
150 int i;
151 char path[MAXPATHLEN + 1];
152
153 for (i = 0; i < dirs; i++) {
154 sprintf(path,"fstool.%06d.%d", pid, i);
155 rmDir2(path);
156 }
157 }
158
159 int
main(int argc,char ** argv)160 main(int argc, char **argv)
161 {
162 int c, i, levels, leave, times;
163 char ch = 0;
164
165 edirs = 0;
166 dirs = 1;
167 files = 5;
168 fs = 1024;
169 leave = 0;
170 levels = 1;
171 times = 1;
172
173 while ((c = getopt(argc, argv, "ad:e:ln:r:f:s:t:")) != -1)
174 switch (c) {
175 case 'a':
176 rnd = 1;
177 break;
178 case 'd':
179 dirs = atoi(optarg);
180 break;
181 case 'e':
182 edirs = atoi(optarg);
183 break;
184 case 'f':
185 files = atoi(optarg);
186 break;
187 case 'l':
188 leave = 1;
189 break;
190 case 'n':
191 levels = atoi(optarg);
192 break;
193 case 's':
194 sscanf(optarg, "%d%c", &fs, &ch);
195 if (ch == 'k' || ch == 'K')
196 fs = fs * 1024;
197 if (ch == 'm' || ch == 'M')
198 fs = fs * 1024 * 1024;
199 break;
200 case 't':
201 times = atoi(optarg);
202 break;
203 default:
204 fprintf(stderr,
205 "Usage: %s [ -a ] "
206 "[ -d <parallel dirs> ] [ -e <dirs> ] "
207 "[ -f <num> ][ -l] [ -n <depth> ] "
208 " [ -s <file size> ]\n", argv[0]);
209 printf(" -a: random file size 1-s.\n");
210 printf(" -d: Tree width (defaults to 1).\n");
211 printf(" -e: Directories at each level.\n");
212 printf(" -f: Number of files.\n");
213 printf(" -l: Leave the files and dirs.\n");
214 printf(" -n: Tree depth.\n");
215 printf(" -s: Size of each file.\n");
216 printf(" -t: Number of times to repeat\n");
217 exit(1);
218 }
219
220 if (times != 1)
221 leave = 0;
222 max = levels;
223 pid = getpid();
224 if ((buffer = calloc(1, fs)) == NULL)
225 err(1, "calloc(%d)", fs);
226 if (getcwd(here, sizeof(here)) == NULL)
227 err(1, "getcwd()");
228
229 for (i = 0; i < times; i++) {
230 mkDir();
231 if (leave == 0)
232 rmDir();
233 }
234
235 return (0);
236 }
237