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1.1 root 1: /* @(#)holey.c 1.2 90/01/03 NFS Rev 2 Testsuite
2: * 1.3 Lachman ONC Test Suite source
3: *
4: * test read/write of holey files
5: */
6: #include <sys/param.h>
7: #ifndef major
8: #include <sys/types.h>
9: #endif
10: #include <sys/stat.h>
11: #include <stdio.h>
12: #ifdef SVR3
13: #include <fcntl.h>
14: #else
15: #include <sys/file.h>
16: #endif
17:
18: #ifndef L_INCR
19: #define L_INCR 1
20: #define L_SET 0
21: #endif
22:
23: #ifndef MIN
24: #define MIN(a, b) ((a) < (b) ? (a) : (b))
25: #endif
26:
27: #define BUFSZ 8192
28: #define FILESZ 70000
29: #define DATASZ 4321
30: #define HOLESZ 9012
31: #define FILENM "holeyfile"
32: int Debug = 0;
33: char *Prog;
34:
35: main(argc, argv)
36: int argc;
37: char *argv[];
38: {
39: int fd, i, tot, ct, sz, bytes, ret;
40: char *filenm = FILENM;
41: char buf[BUFSZ];
42: extern int errno;
43: int filesz = FILESZ;
44: int datasz = DATASZ;
45: int holesz = HOLESZ;
46: extern long lseek();
47:
48: Prog = argv[0];
49: if (argc > 1 && !strcmp(argv[1], "-d")) {
50: Debug = 1;
51: argc--;
52: argv++;
53: }
54: if (argc > 5 || (argc > 1 && !strcmp(argv[1], "-h"))) {
55: fprintf(stderr, "\
56: usage: %s [filename filesize datasize holesize]\n", Prog);
57: exit(1);
58: }
59: if (argc > 1 && strcmp(argv[1], "-"))
60: filenm = argv[1];
61: if (argc > 2 && strcmp(argv[2], "-"))
62: filesz = atoi(argv[2]);
63: if (argc > 3 && strcmp(argv[3], "-"))
64: datasz = atoi(argv[3]);
65: if (argc > 4 && strcmp(argv[4], "-"))
66: holesz = atoi(argv[4]);
67:
68: umask(0);
69: if (datasz > BUFSZ) {
70: fprintf(stderr, "%s: datasize (%d) greater than maximum (%d)\n",
71: Prog, datasz, BUFSZ);
72: exit(1);
73: }
74: if ((fd = creat(filenm, 0666)) < 0) {
75: sprintf(buf, "%s: creat of %s", Prog, filenm);
76: perror(buf);
77: exit(1);
78: }
79: if (close(fd)) {
80: sprintf(buf, "%s: close of %s after creat", Prog, filenm);
81: perror(buf);
82: exit(1);
83: }
84: if ((fd = open(filenm, 2)) < 0) {
85: sprintf(buf, "%s: open of %s", Prog, filenm);
86: perror(buf);
87: exit(1);
88: }
89: for (i=0; i < BUFSZ / sizeof(int); i++)
90: ((int *)buf)[i] = i;
91:
92: for (sz = filesz; sz > 0; ) {
93: if (datasz || sz == 1) {
94: bytes = MIN(sz, datasz);
95: if (bytes == 0)
96: bytes = 1;
97: if ((ret = write(fd, buf, bytes)) != bytes) {
98: fprintf(stderr, "write ret %d (expect %d)\n",
99: ret, bytes);
100: if (errno) perror("write");
101: exit(1);
102: }
103: sz -= bytes;
104: }
105: if (sz && holesz) {
106: bytes = MIN(sz - 1, holesz);
107: if (lseek(fd, bytes, L_INCR) == -1L) {
108: perror("lseek (write)");
109: exit(1);
110: }
111: sz -= bytes;
112: }
113: }
114: if (lseek(fd, 0, L_SET) == -1L) {
115: perror("lseek (rewind)");
116: exit(1);
117: }
118:
119: for (sz = filesz; sz > 0; ) {
120: if (datasz || sz == 1) {
121: bytes = MIN(sz, datasz);
122: if (bytes == 0)
123: bytes = 1;
124: sz -= bytes;
125: for ( ; bytes > 0; bytes -= ret) {
126: if (Debug)
127: fprintf(stderr, "\
128: --data read: offset %d, sz = %d, bytes = %d\n", filesz - sz - bytes, sz, bytes);
129: if ((ret = read(fd, buf, bytes)) <= 0) {
130: fprintf(stderr, "\
131: read (data) offset %d, sz = %d, bytes = %d (ret = %d), datasz = %d\n",
132: filesz - sz - bytes, sz, bytes, ret, datasz);
133: if (ret < 0)
134: perror("read");
135: exit(1);
136: }
137: ct = bytes - (bytes % sizeof(int));
138: if (Debug)
139: fprintf(stderr, "\
140: ret = %d, ct = %d\n", ret, ct);
141: for (i=0; i < ct / sizeof(int); i++) {
142: if (((int *)buf)[i] != i) {
143: fprintf(stderr, "\
144: bad data in %s\n", filenm);
145: exit(1);
146: }
147: }
148: }
149: }
150: if (sz && holesz) {
151: tot = MIN(holesz, sz - 1);
152: sz -= tot;
153: for (ct = 0; tot > 0; tot -= ret, ct += ret) {
154: bytes = MIN(tot, BUFSZ);
155: if (Debug)
156: fprintf(stderr, "\
157: ++hole read: offset %d, sz = %d, tot = %d, bytes = %d\n",
158: filesz - sz - tot, sz, tot, bytes);
159: if ((ret = read(fd, buf, bytes)) <= 0) {
160: fprintf(stderr, "\
161: read (hole) offset %d, sz = %d, bytes = %d (ret %d), holesz = %d\n",
162: filesz - sz - tot, sz, bytes, ret, holesz);
163: if (ret < 0)
164: perror("read");
165: exit(1);
166: }
167: if (Debug)
168: fprintf(stderr, " ret = %d\n", ret);
169: for (i = 0; i < ret; i++) {
170: if (buf[i] != '\0') {
171: fprintf(stderr, "\
172: non-zero data read back from hole (offset %d)\n", filesz - sz + ct + i);
173: exit(1);
174: }
175: }
176: }
177: }
178: }
179: printf("\nHoley file test ok\n");
180: exit(0);
181: }
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