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
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
|
#ifndef __KERNEL__
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/fs.h>
#include <linux/types.h>
#include <linux/hdreg.h>
#include <asm/dasd.h>
#endif
#define LINE_LENGTH 80
#define VTOC_START_CC 0x0
#define VTOC_START_HH 0x1
#define FIRST_USABLE_CYL 1
#define FIRST_USABLE_TRK 2
#define DASD_3380_TYPE 13148
#define DASD_3390_TYPE 13200
#define DASD_9345_TYPE 37701
#define DASD_3380_VALUE 0xbb60
#define DASD_3390_VALUE 0xe5a2
#define DASD_9345_VALUE 0xbc98
#define VOLSER_LENGTH 6
#define BIG_DISK_SIZE 0x10000
#define VTOC_ERROR "VTOC error:"
typedef struct ttr
{
__u16 tt;
__u8 r;
} __attribute__ ((packed)) ttr_t;
typedef struct cchhb
{
__u16 cc;
__u16 hh;
__u8 b;
} __attribute__ ((packed)) cchhb_t;
typedef struct cchh
{
__u16 cc;
__u16 hh;
} __attribute__ ((packed)) cchh_t;
typedef struct labeldate
{
__u8 year;
__u16 day;
} __attribute__ ((packed)) labeldate_t;
typedef struct volume_label
{
char volkey[4]; /* volume key = volume label */
char vollbl[4]; /* volume label */
char volid[6]; /* volume identifier */
__u8 security; /* security byte */
cchhb_t vtoc; /* VTOC address */
char res1[5]; /* reserved */
char cisize[4]; /* CI-size for FBA,... */
/* ...blanks for CKD */
char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */
char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */
char res2[4]; /* reserved */
char lvtoc[14]; /* owner code for LVTOC */
char res3[29]; /* reserved */
} __attribute__ ((packed)) volume_label_t;
typedef struct extent
{
__u8 typeind; /* extent type indicator */
__u8 seqno; /* extent sequence number */
cchh_t llimit; /* starting point of this extent */
cchh_t ulimit; /* ending point of this extent */
} __attribute__ ((packed)) extent_t;
typedef struct dev_const
{
__u16 DS4DSCYL; /* number of logical cyls */
__u16 DS4DSTRK; /* number of tracks in a logical cylinder */
__u16 DS4DEVTK; /* device track length */
__u8 DS4DEVI; /* non-last keyed record overhead */
__u8 DS4DEVL; /* last keyed record overhead */
__u8 DS4DEVK; /* non-keyed record overhead differential */
__u8 DS4DEVFG; /* flag byte */
__u16 DS4DEVTL; /* device tolerance */
__u8 DS4DEVDT; /* number of DSCB's per track */
__u8 DS4DEVDB; /* number of directory blocks per track */
} __attribute__ ((packed)) dev_const_t;
typedef struct format1_label
{
char DS1DSNAM[44]; /* data set name */
__u8 DS1FMTID; /* format identifier */
char DS1DSSN[6]; /* data set serial number */
__u16 DS1VOLSQ; /* volume sequence number */
labeldate_t DS1CREDT; /* creation date: ydd */
labeldate_t DS1EXPDT; /* expiration date */
__u8 DS1NOEPV; /* number of extents on volume */
__u8 DS1NOBDB; /* no. of bytes used in last direction blk */
__u8 DS1FLAG1; /* flag 1 */
char DS1SYSCD[13]; /* system code */
labeldate_t DS1REFD; /* date last referenced */
__u8 DS1SMSFG; /* system managed storage indicators */
__u8 DS1SCXTF; /* sec. space extension flag byte */
__u16 DS1SCXTV; /* secondary space extension value */
__u8 DS1DSRG1; /* data set organisation byte 1 */
__u8 DS1DSRG2; /* data set organisation byte 2 */
__u8 DS1RECFM; /* record format */
__u8 DS1OPTCD; /* option code */
__u16 DS1BLKL; /* block length */
__u16 DS1LRECL; /* record length */
__u8 DS1KEYL; /* key length */
__u16 DS1RKP; /* relative key position */
__u8 DS1DSIND; /* data set indicators */
__u8 DS1SCAL1; /* secondary allocation flag byte */
char DS1SCAL3[3]; /* secondary allocation quantity */
ttr_t DS1LSTAR; /* last used track and block on track */
__u16 DS1TRBAL; /* space remaining on last used track */
__u16 res1; /* reserved */
extent_t DS1EXT1; /* first extent description */
extent_t DS1EXT2; /* second extent description */
extent_t DS1EXT3; /* third extent description */
cchhb_t DS1PTRDS; /* possible pointer to f2 or f3 DSCB */
} __attribute__ ((packed)) format1_label_t;
typedef struct format4_label
{
char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */
__u8 DS4IDFMT; /* format identifier */
cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */
__u16 DS4DSREC; /* number of available DSCB's */
cchh_t DS4HCCHH; /* CCHH of next available alternate track */
__u16 DS4NOATK; /* number of remaining alternate tracks */
__u8 DS4VTOCI; /* VTOC indicators */
__u8 DS4NOEXT; /* number of extents in VTOC */
__u8 DS4SMSFG; /* system managed storage indicators */
__u8 DS4DEVAC; /* number of alternate cylinders.
Subtract from first two bytes of
DS4DEVSZ to get number of usable
cylinders. can be zero. valid
only if DS4DEVAV on. */
dev_const_t DS4DEVCT; /* device constants */
char DS4AMTIM[8]; /* VSAM time stamp */
char DS4AMCAT[3]; /* VSAM catalog indicator */
char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */
char res1[5]; /* reserved */
char DS4F6PTR[5]; /* pointer to first format 6 DSCB */
extent_t DS4VTOCE; /* VTOC extent description */
char res2[10]; /* reserved */
__u8 DS4EFLVL; /* extended free-space management level */
cchhb_t DS4EFPTR; /* pointer to extended free-space info */
char res3[9]; /* reserved */
} __attribute__ ((packed)) format4_label_t;
typedef struct ds5ext
{
__u16 t; /* RTA of the first track of free extent */
__u16 fc; /* number of whole cylinders in free ext. */
__u8 ft; /* number of remaining free tracks */
} __attribute__ ((packed)) ds5ext_t;
typedef struct format5_label
{
char DS5KEYID[4]; /* key identifier */
ds5ext_t DS5AVEXT; /* first available (free-space) extent. */
ds5ext_t DS5EXTAV[7]; /* seven available extents */
__u8 DS5FMTID; /* format identifier */
ds5ext_t DS5MAVET[18]; /* eighteen available extents */
cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */
} __attribute__ ((packed)) format5_label_t;
typedef struct ds7ext
{
__u32 a; /* starting RTA value */
__u32 b; /* ending RTA value + 1 */
} __attribute__ ((packed)) ds7ext_t;
typedef struct format7_label
{
char DS7KEYID[4]; /* key identifier */
ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */
__u8 DS7FMTID; /* format identifier */
ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */
char res1[2]; /* reserved */
cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */
} __attribute__ ((packed)) format7_label_t;
char * vtoc_ebcdic_enc (
unsigned char source[LINE_LENGTH],
unsigned char target[LINE_LENGTH],
int l);
char * vtoc_ebcdic_dec (
unsigned char source[LINE_LENGTH],
unsigned char target[LINE_LENGTH],
int l);
void vtoc_set_extent (
extent_t * ext,
__u8 typeind,
__u8 seqno,
cchh_t * lower,
cchh_t * upper);
void vtoc_set_cchh (
cchh_t * addr,
__u16 cc,
__u16 hh);
void vtoc_set_cchhb (
cchhb_t * addr,
__u16 cc,
__u16 hh,
__u8 b);
void vtoc_set_date (
labeldate_t * d,
__u8 year,
__u16 day);
void vtoc_volume_label_init (
volume_label_t *vlabel);
int vtoc_read_volume_label (
char * device,
unsigned long vlabel_start,
volume_label_t * vlabel);
int vtoc_write_volume_label (
char *device,
unsigned long vlabel_start,
volume_label_t *vlabel);
void vtoc_volume_label_set_volser (
volume_label_t *vlabel,
char *volser);
char *vtoc_volume_label_get_volser (
volume_label_t *vlabel,
char *volser);
void vtoc_volume_label_set_key (
volume_label_t *vlabel,
char *key);
void vtoc_volume_label_set_label (
volume_label_t *vlabel,
char *lbl);
char *vtoc_volume_label_get_label (
volume_label_t *vlabel,
char *lbl);
void vtoc_read_label (
char *device,
unsigned long position,
format1_label_t *f1,
format4_label_t *f4,
format5_label_t *f5,
format7_label_t *f7);
void vtoc_write_label (
char *device,
unsigned long position,
format1_label_t *f1,
format4_label_t *f4,
format5_label_t *f5,
format7_label_t *f7);
void vtoc_init_format1_label (
char *volid,
unsigned int blksize,
extent_t *part_extent,
format1_label_t *f1);
void vtoc_init_format4_label (
format4_label_t *f4lbl,
unsigned int usable_partitions,
unsigned int cylinders,
unsigned int tracks,
unsigned int blocks,
unsigned int blksize,
__u16 dev_type);
void vtoc_update_format4_label (
format4_label_t *f4,
cchhb_t *highest_f1,
__u16 unused_update);
void vtoc_init_format5_label (
format5_label_t *f5);
void vtoc_update_format5_label_add (
format5_label_t *f5,
int verbose,
int cyl,
int trk,
__u16 a,
__u16 b,
__u8 c);
void vtoc_update_format5_label_del (
format5_label_t *f5,
int verbose,
int cyl,
int trk,
__u16 a,
__u16 b,
__u8 c);
void vtoc_init_format7_label (
format7_label_t *f7);
void vtoc_update_format7_label_add (
format7_label_t *f7,
int verbose,
__u32 a,
__u32 b);
void vtoc_update_format7_label_del (
format7_label_t *f7,
int verbose,
__u32 a,
__u32 b);
void vtoc_set_freespace(
format4_label_t *f4,
format5_label_t *f5,
format7_label_t *f7,
char ch,
int verbose,
__u32 start,
__u32 stop,
int cyl,
int trk);
|
