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DEFINITIONS
This source file includes following definitions.
- main
1 /*
2 * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
3 * The President and Fellows of Harvard College.
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 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * filetest.c
32 *
33 * Tests the filesystem by opening, writing to and reading from a
34 * user specified file.
35 *
36 * This should run (on SFS) even before the file system assignment is started.
37 * It should also continue to work once said assignment is complete.
38 * It will not run fully on emufs, because emufs does not support remove().
39 */
40
41 #include <stdio.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <err.h>
45
46 int
47 main(int argc, char *argv[])
48 {
49 static char writebuf[40] = "Twiddle dee dee, Twiddle dum dum.......\n";
50 static char readbuf[41];
51
52 int fd, rv;
53
54 if (argc!=2) {
55 errx(1, "Usage: filetest <filename>");
56 }
57
58 fd = open(argv[1], O_WRONLY|O_CREAT|O_TRUNC, 0664);
59 if (fd<0) {
60 err(1, "%s: open for write", argv[1]);
61 }
62
63
64 rv = write(fd, writebuf, 40);
65 if (rv<0) {
66 err(1, "%s: write", argv[1]);
67 }
68
69 rv = close(fd);
70 if (rv<0) {
71 err(1, "%s: close (1st time)", argv[1]);
72 }
73
74 fd = open(argv[1], O_RDONLY);
75 if (fd<0) {
76 err(1, "%s: open for read", argv[1]);
77 }
78
79 rv = read(fd, readbuf, 40);
80 if (rv<0) {
81 err(1, "%s: read", argv[1]);
82 }
83 rv = close(fd);
84 if (rv<0) {
85 err(1, "%s: close (2nd time)", argv[1]);
86 }
87 /* ensure null termination */
88 readbuf[40] = 0;
89
90 if (strcmp(readbuf, writebuf)) {
91 errx(1, "Buffer data mismatch!");
92 }
93
94 rv = remove(argv[1]);
95 if (rv<0) {
96 err(1, "%s: remove", argv[1]);
97 }
98 printf("Passed filetest.\n");
99 return 0;
100 }