1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/*
* @(#)holey.c 1.3 2001/08/25 Connectathon Testsuite
* 1.3 Lachman ONC Test Suite source
*
* test read/write of holey files
*/
#if defined (DOS) || defined (WIN32)
#define DOSorWIN32
#include "../tests.h"
#endif
#ifndef DOSorWIN32
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#if defined(SVR3) || defined(SVR4)
#include <fcntl.h>
#else
#include <sys/file.h>
#endif
#endif /* DOSorWIN32 */
#ifndef L_INCR
#define L_INCR 1
#define L_SET 0
#endif
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
#define BUFSZ 8192
#define FILESZ 70000
#define DATASZ 4321
#ifndef DOSorWIN32
#define HOLESZ 9012
#define FILENM "holeyfile"
#else
#define HOLESZ 8814 /* XXX why different size? */
#define FILENM "holefile"
#endif
static int Debug = 0;
static char *Prog;
int
main(argc, argv)
int argc;
char *argv[];
{
int fd, i, tot, ct, sz, bytes, ret;
char *filenm = FILENM;
char buf[BUFSZ];
int filesz = FILESZ;
int datasz = DATASZ;
int holesz = HOLESZ;
int serrno;
int oflags; /* open flags */
Prog = argv[0];
if (argc > 1 && strcmp(argv[1], "-d") == 0) {
Debug = 1;
argc--;
argv++;
}
if (argc > 5 || (argc > 1 && strcmp(argv[1], "-h") == 0)) {
fprintf(stderr,
"usage: %s [filename filesize datasize holesize]\n",
Prog);
exit(1);
}
if (argc > 1 && strcmp(argv[1], "-") != 0)
filenm = argv[1];
if (argc > 2 && strcmp(argv[2], "-") != 0)
filesz = atoi(argv[2]);
if (argc > 3 && strcmp(argv[3], "-") != 0)
datasz = atoi(argv[3]);
if (argc > 4 && strcmp(argv[4], "-") != 0)
holesz = atoi(argv[4]);
umask(0);
if (datasz > BUFSZ) {
fprintf(stderr, "%s: datasize (%d) greater than maximum (%d)\n",
Prog, datasz, BUFSZ);
exit(1);
}
oflags = O_CREAT|O_TRUNC|O_RDWR;
#ifdef DOSorWIN32
oflags |= O_BINARY;
#endif
if ((fd = open(filenm, oflags, 0666)) < 0) {
sprintf(buf, "%s: create of %s", Prog, filenm);
perror(buf);
exit(1);
}
if (close(fd) < 0) {
sprintf(buf, "%s: close of %s after creat", Prog, filenm);
perror(buf);
exit(1);
}
if ((fd = open(filenm, O_RDWR)) < 0) {
sprintf(buf, "%s: open of %s", Prog, filenm);
perror(buf);
exit(1);
}
for (i = 0; i < BUFSZ / sizeof (int); i++)
((int *)buf)[i] = i;
for (sz = filesz; sz > 0; ) {
if (datasz || sz == 1) {
bytes = MIN(sz, datasz);
if (bytes == 0)
bytes = 1;
if ((ret = write(fd, buf, bytes)) != bytes) {
serrno = errno;
fprintf(stderr, "write ret %d (expect %d)\n",
ret, bytes);
if (serrno) {
errno = serrno;
perror("write");
}
exit(1);
}
sz -= bytes;
}
if (sz && holesz) {
bytes = MIN(sz - 1, holesz);
if (lseek(fd, bytes, L_INCR) == -1L) {
perror("lseek (write)");
exit(1);
}
sz -= bytes;
}
}
if (lseek(fd, 0, L_SET) == -1L) {
perror("lseek (rewind)");
exit(1);
}
#ifdef BSD
printf("BSD workaround: reopening file read-only.\n");
if (close(fd) < 0) {
sprintf(buf, "%s: close of %s after write", Prog, filenm);
perror(buf);
exit(1);
}
if ((fd = open(filenm, O_RDONLY)) < 0) {
sprintf(buf, "%s: open of %s after write", Prog, filenm);
perror(buf);
exit(1);
}
#endif
for (sz = filesz; sz > 0; ) {
if (datasz || sz == 1) {
bytes = MIN(sz, datasz);
if (bytes == 0)
bytes = 1;
sz -= bytes;
for (; bytes > 0; bytes -= ret) {
if (Debug) {
fprintf(stderr,
"--data read: offset %d, sz = %d, bytes = %d\n",
filesz - sz - bytes, sz, bytes);
}
if ((ret = read(fd, buf, bytes)) <= 0) {
serrno = errno;
fprintf(stderr,
"read (data) offset %d, sz = %d, bytes = %d (ret = %d), datasz = %d\n",
filesz - sz - bytes, sz, bytes,
ret, datasz);
if (ret < 0) {
errno = serrno;
perror("read");
}
exit(1);
}
ct = bytes - (bytes % sizeof (int));
if (Debug) {
fprintf(stderr, " ret = %d, ct = %d\n",
ret, ct);
}
for (i = 0; i < ct / sizeof (int); i++) {
if (((int *)buf)[i] != i) {
fprintf(stderr,
"bad data in %s\n",
filenm);
if (Debug) {
fprintf(stderr,
"address= %d, valueis= %d, shouldbe= %d\n",
i,
((int *)buf)[i], i);
}
exit(1);
}
}
}
}
if (sz && holesz) {
tot = MIN(holesz, sz - 1);
sz -= tot;
for (ct = 0; tot > 0; tot -= ret, ct += ret) {
bytes = MIN(tot, BUFSZ);
if (Debug) {
fprintf(stderr,
"++hole read: offset %d, sz = %d, tot = %d, bytes = %d\n",
filesz - sz - tot, sz, tot,
bytes);
}
if ((ret = read(fd, buf, bytes)) <= 0) {
serrno = errno;
fprintf(stderr,
"read (hole) offset %d, sz = %d, bytes = %d (ret %d), holesz = %d\n",
filesz - sz - tot, sz, bytes,
ret, holesz);
if (ret < 0) {
errno = serrno;
perror("read");
}
exit(1);
}
if (Debug)
fprintf(stderr, " ret = %d\n", ret);
for (i = 0; i < ret; i++) {
if (buf[i] != '\0') {
fprintf(stderr,
"non-zero data read back from hole (offset %d)\n",
filesz - sz + ct + i);
exit(1);
}
}
}
}
}
printf("Holey file test ok\n");
exit(0);
}
|
