12 #include <sys/ioctl.h>
15 #include <linux/types.h>
16 #include <linux/hdreg.h>
17 #include <linux/version.h>
22 #define LINE_LENGTH 80
23 #define VTOC_START_CC 0x0
24 #define VTOC_START_HH 0x1
25 #define FIRST_USABLE_CYL 1
26 #define FIRST_USABLE_TRK 2
28 #define DASD_3380_TYPE 13148
29 #define DASD_3390_TYPE 13200
30 #define DASD_9345_TYPE 37701
32 #define DASD_3380_VALUE 0xbb60
33 #define DASD_3390_VALUE 0xe5a2
34 #define DASD_9345_VALUE 0xbc98
36 #define VOLSER_LENGTH 6
37 #define BIG_DISK_SIZE 0x10000
39 #define VTOC_ERROR "VTOC error:"
46 } __attribute__ ((packed)) ttr_t;
53 } __attribute__ ((packed)) cchhb_t;
59 } __attribute__ ((packed)) cchh_t;
61 typedef struct labeldate
65 } __attribute__ ((packed)) labeldate_t;
68 typedef struct volume_label
70 char volkey[4]; /* volume key = volume label */
71 char vollbl[4]; /* volume label */
72 char volid[6]; /* volume identifier */
73 __u8 security; /* security byte */
74 cchhb_t vtoc; /* VTOC address */
75 char res1[5]; /* reserved */
76 char cisize[4]; /* CI-size for FBA,... */
77 /* ...blanks for CKD */
78 char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */
79 char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */
80 char res2[4]; /* reserved */
81 char lvtoc[14]; /* owner code for LVTOC */
82 char res3[29]; /* reserved */
83 } __attribute__ ((packed)) volume_label_t;
88 __u8 typeind; /* extent type indicator */
89 __u8 seqno; /* extent sequence number */
90 cchh_t llimit; /* starting point of this extent */
91 cchh_t ulimit; /* ending point of this extent */
92 } __attribute__ ((packed)) extent_t;
95 typedef struct dev_const
97 __u16 DS4DSCYL; /* number of logical cyls */
98 __u16 DS4DSTRK; /* number of tracks in a logical cylinder */
99 __u16 DS4DEVTK; /* device track length */
100 __u8 DS4DEVI; /* non-last keyed record overhead */
101 __u8 DS4DEVL; /* last keyed record overhead */
102 __u8 DS4DEVK; /* non-keyed record overhead differential */
103 __u8 DS4DEVFG; /* flag byte */
104 __u16 DS4DEVTL; /* device tolerance */
105 __u8 DS4DEVDT; /* number of DSCB's per track */
106 __u8 DS4DEVDB; /* number of directory blocks per track */
107 } __attribute__ ((packed)) dev_const_t;
110 typedef struct format1_label
112 char DS1DSNAM[44]; /* data set name */
113 __u8 DS1FMTID; /* format identifier */
114 char DS1DSSN[6]; /* data set serial number */
115 __u16 DS1VOLSQ; /* volume sequence number */
116 labeldate_t DS1CREDT; /* creation date: ydd */
117 labeldate_t DS1EXPDT; /* expiration date */
118 __u8 DS1NOEPV; /* number of extents on volume */
119 __u8 DS1NOBDB; /* no. of bytes used in last direction blk */
120 __u8 DS1FLAG1; /* flag 1 */
121 char DS1SYSCD[13]; /* system code */
122 labeldate_t DS1REFD; /* date last referenced */
123 __u8 DS1SMSFG; /* system managed storage indicators */
124 __u8 DS1SCXTF; /* sec. space extension flag byte */
125 __u16 DS1SCXTV; /* secondary space extension value */
126 __u8 DS1DSRG1; /* data set organisation byte 1 */
127 __u8 DS1DSRG2; /* data set organisation byte 2 */
128 __u8 DS1RECFM; /* record format */
129 __u8 DS1OPTCD; /* option code */
130 __u16 DS1BLKL; /* block length */
131 __u16 DS1LRECL; /* record length */
132 __u8 DS1KEYL; /* key length */
133 __u16 DS1RKP; /* relative key position */
134 __u8 DS1DSIND; /* data set indicators */
135 __u8 DS1SCAL1; /* secondary allocation flag byte */
136 char DS1SCAL3[3]; /* secondary allocation quantity */
137 ttr_t DS1LSTAR; /* last used track and block on track */
138 __u16 DS1TRBAL; /* space remaining on last used track */
139 __u16 res1; /* reserved */
140 extent_t DS1EXT1; /* first extent description */
141 extent_t DS1EXT2; /* second extent description */
142 extent_t DS1EXT3; /* third extent description */
143 cchhb_t DS1PTRDS; /* possible pointer to f2 or f3 DSCB */
144 } __attribute__ ((packed)) format1_label_t;
147 typedef struct format4_label
149 char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */
150 __u8 DS4IDFMT; /* format identifier */
151 cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */
152 __u16 DS4DSREC; /* number of available DSCB's */
153 cchh_t DS4HCCHH; /* CCHH of next available alternate track */
154 __u16 DS4NOATK; /* number of remaining alternate tracks */
155 __u8 DS4VTOCI; /* VTOC indicators */
156 __u8 DS4NOEXT; /* number of extents in VTOC */
157 __u8 DS4SMSFG; /* system managed storage indicators */
158 __u8 DS4DEVAC; /* number of alternate cylinders.
159 Subtract from first two bytes of
160 DS4DEVSZ to get number of usable
161 cylinders. can be zero. valid
162 only if DS4DEVAV on. */
163 dev_const_t DS4DEVCT; /* device constants */
164 char DS4AMTIM[8]; /* VSAM time stamp */
165 char DS4AMCAT[3]; /* VSAM catalog indicator */
166 char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */
167 char res1[5]; /* reserved */
168 char DS4F6PTR[5]; /* pointer to first format 6 DSCB */
169 extent_t DS4VTOCE; /* VTOC extent description */
170 char res2[10]; /* reserved */
171 __u8 DS4EFLVL; /* extended free-space management level */
172 cchhb_t DS4EFPTR; /* pointer to extended free-space info */
173 char res3[9]; /* reserved */
174 } __attribute__ ((packed)) format4_label_t;
177 typedef struct ds5ext
179 __u16 t; /* RTA of the first track of free extent */
180 __u16 fc; /* number of whole cylinders in free ext. */
181 __u8 ft; /* number of remaining free tracks */
182 } __attribute__ ((packed)) ds5ext_t;
185 typedef struct format5_label
187 char DS5KEYID[4]; /* key identifier */
188 ds5ext_t DS5AVEXT; /* first available (free-space) extent. */
189 ds5ext_t DS5EXTAV[7]; /* seven available extents */
190 __u8 DS5FMTID; /* format identifier */
191 ds5ext_t DS5MAVET[18]; /* eighteen available extents */
192 cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */
193 } __attribute__ ((packed)) format5_label_t;
196 typedef struct ds7ext
198 __u32 a; /* starting RTA value */
199 __u32 b; /* ending RTA value + 1 */
200 } __attribute__ ((packed)) ds7ext_t;
203 typedef struct format7_label
205 char DS7KEYID[4]; /* key identifier */
206 ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */
207 __u8 DS7FMTID; /* format identifier */
208 ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */
209 char res1[2]; /* reserved */
210 cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */
211 } __attribute__ ((packed)) format7_label_t;
214 char * vtoc_ebcdic_enc (
215 unsigned char source[LINE_LENGTH],
216 unsigned char target[LINE_LENGTH],
218 char * vtoc_ebcdic_dec (
219 unsigned char source[LINE_LENGTH],
220 unsigned char target[LINE_LENGTH],
222 void vtoc_set_extent (
232 void vtoc_set_cchhb (
242 void vtoc_volume_label_init (
243 volume_label_t *vlabel);
245 int vtoc_read_volume_label (
247 unsigned long vlabel_start,
248 volume_label_t * vlabel);
250 int vtoc_write_volume_label (
252 unsigned long vlabel_start,
253 volume_label_t *vlabel);
255 void vtoc_volume_label_set_volser (
256 volume_label_t *vlabel,
259 char *vtoc_volume_label_get_volser (
260 volume_label_t *vlabel,
263 void vtoc_volume_label_set_key (
264 volume_label_t *vlabel,
267 void vtoc_volume_label_set_label (
268 volume_label_t *vlabel,
271 char *vtoc_volume_label_get_label (
272 volume_label_t *vlabel,
275 void vtoc_read_label (
277 unsigned long position,
281 format7_label_t *f7);
283 void vtoc_write_label (
285 unsigned long position,
289 format7_label_t *f7);
292 void vtoc_init_format1_label (
294 unsigned int blksize,
295 extent_t *part_extent,
296 format1_label_t *f1);
299 void vtoc_init_format4_label (
300 format4_label_t *f4lbl,
301 unsigned int usable_partitions,
302 unsigned int cylinders,
305 unsigned int blksize,
308 void vtoc_update_format4_label (
311 __u16 unused_update);
314 void vtoc_init_format5_label (
315 format5_label_t *f5);
317 void vtoc_update_format5_label_add (
326 void vtoc_update_format5_label_del (
336 void vtoc_init_format7_label (
337 format7_label_t *f7);
339 void vtoc_update_format7_label_add (
345 void vtoc_update_format7_label_del (
352 void vtoc_set_freespace(