Contents of /tags/mkinitrd-6_2_1/busybox/util-linux/fdisk_sgi.c
Parent Directory | Revision Log
Revision 999 -
(show annotations)
(download)
Sun May 30 12:16:23 2010 UTC (14 years, 4 months ago) by niro
File MIME type: text/plain
File size: 25079 byte(s)
Sun May 30 12:16:23 2010 UTC (14 years, 4 months ago) by niro
File MIME type: text/plain
File size: 25079 byte(s)
tagged 'mkinitrd-6_2_1'
1 | /* |
2 | * Copyright (C) Andreas Neuper, Sep 1998. |
3 | * |
4 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
5 | */ |
6 | |
7 | #if ENABLE_FEATURE_SGI_LABEL |
8 | |
9 | #define SGI_DEBUG 0 |
10 | |
11 | #define SGI_VOLHDR 0x00 |
12 | /* 1 and 2 were used for drive types no longer supported by SGI */ |
13 | #define SGI_SWAP 0x03 |
14 | /* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */ |
15 | #define SGI_VOLUME 0x06 |
16 | #define SGI_EFS 0x07 |
17 | #define SGI_LVOL 0x08 |
18 | #define SGI_RLVOL 0x09 |
19 | #define SGI_XFS 0x0a |
20 | #define SGI_XFSLOG 0x0b |
21 | #define SGI_XLV 0x0c |
22 | #define SGI_XVM 0x0d |
23 | #define SGI_ENTIRE_DISK SGI_VOLUME |
24 | |
25 | struct device_parameter { /* 48 bytes */ |
26 | unsigned char skew; |
27 | unsigned char gap1; |
28 | unsigned char gap2; |
29 | unsigned char sparecyl; |
30 | unsigned short pcylcount; |
31 | unsigned short head_vol0; |
32 | unsigned short ntrks; /* tracks in cyl 0 or vol 0 */ |
33 | unsigned char cmd_tag_queue_depth; |
34 | unsigned char unused0; |
35 | unsigned short unused1; |
36 | unsigned short nsect; /* sectors/tracks in cyl 0 or vol 0 */ |
37 | unsigned short bytes; |
38 | unsigned short ilfact; |
39 | unsigned int flags; /* controller flags */ |
40 | unsigned int datarate; |
41 | unsigned int retries_on_error; |
42 | unsigned int ms_per_word; |
43 | unsigned short xylogics_gap1; |
44 | unsigned short xylogics_syncdelay; |
45 | unsigned short xylogics_readdelay; |
46 | unsigned short xylogics_gap2; |
47 | unsigned short xylogics_readgate; |
48 | unsigned short xylogics_writecont; |
49 | }; |
50 | |
51 | /* |
52 | * controller flags |
53 | */ |
54 | #define SECTOR_SLIP 0x01 |
55 | #define SECTOR_FWD 0x02 |
56 | #define TRACK_FWD 0x04 |
57 | #define TRACK_MULTIVOL 0x08 |
58 | #define IGNORE_ERRORS 0x10 |
59 | #define RESEEK 0x20 |
60 | #define ENABLE_CMDTAGQ 0x40 |
61 | |
62 | typedef struct { |
63 | unsigned int magic; /* expect SGI_LABEL_MAGIC */ |
64 | unsigned short boot_part; /* active boot partition */ |
65 | unsigned short swap_part; /* active swap partition */ |
66 | unsigned char boot_file[16]; /* name of the bootfile */ |
67 | struct device_parameter devparam; /* 1 * 48 bytes */ |
68 | struct volume_directory { /* 15 * 16 bytes */ |
69 | unsigned char vol_file_name[8]; /* a character array */ |
70 | unsigned int vol_file_start; /* number of logical block */ |
71 | unsigned int vol_file_size; /* number of bytes */ |
72 | } directory[15]; |
73 | struct sgi_partinfo { /* 16 * 12 bytes */ |
74 | unsigned int num_sectors; /* number of blocks */ |
75 | unsigned int start_sector; /* must be cylinder aligned */ |
76 | unsigned int id; |
77 | } partitions[16]; |
78 | unsigned int csum; |
79 | unsigned int fillbytes; |
80 | } sgi_partition; |
81 | |
82 | typedef struct { |
83 | unsigned int magic; /* looks like a magic number */ |
84 | unsigned int a2; |
85 | unsigned int a3; |
86 | unsigned int a4; |
87 | unsigned int b1; |
88 | unsigned short b2; |
89 | unsigned short b3; |
90 | unsigned int c[16]; |
91 | unsigned short d[3]; |
92 | unsigned char scsi_string[50]; |
93 | unsigned char serial[137]; |
94 | unsigned short check1816; |
95 | unsigned char installer[225]; |
96 | } sgiinfo; |
97 | |
98 | #define SGI_LABEL_MAGIC 0x0be5a941 |
99 | #define SGI_LABEL_MAGIC_SWAPPED 0x41a9e50b |
100 | #define SGI_INFO_MAGIC 0x00072959 |
101 | #define SGI_INFO_MAGIC_SWAPPED 0x59290700 |
102 | |
103 | #define SGI_SSWAP16(x) (sgi_other_endian ? fdisk_swap16(x) : (uint16_t)(x)) |
104 | #define SGI_SSWAP32(x) (sgi_other_endian ? fdisk_swap32(x) : (uint32_t)(x)) |
105 | |
106 | #define sgilabel ((sgi_partition *)MBRbuffer) |
107 | #define sgiparam (sgilabel->devparam) |
108 | |
109 | /* |
110 | * |
111 | * fdisksgilabel.c |
112 | * |
113 | * Copyright (C) Andreas Neuper, Sep 1998. |
114 | * This file may be modified and redistributed under |
115 | * the terms of the GNU Public License. |
116 | * |
117 | * Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
118 | * Internationalization |
119 | */ |
120 | |
121 | |
122 | static smallint sgi_other_endian; /* bool */ |
123 | static smallint sgi_volumes = 1; /* max 15 */ |
124 | |
125 | /* |
126 | * only dealing with free blocks here |
127 | */ |
128 | |
129 | typedef struct { |
130 | unsigned int first; |
131 | unsigned int last; |
132 | } freeblocks; |
133 | static freeblocks freelist[17]; /* 16 partitions can produce 17 vacant slots */ |
134 | |
135 | static void |
136 | setfreelist(int i, unsigned int f, unsigned int l) |
137 | { |
138 | freelist[i].first = f; |
139 | freelist[i].last = l; |
140 | } |
141 | |
142 | static void |
143 | add2freelist(unsigned int f, unsigned int l) |
144 | { |
145 | int i; |
146 | for (i = 0; i < 17; i++) |
147 | if (freelist[i].last == 0) |
148 | break; |
149 | setfreelist(i, f, l); |
150 | } |
151 | |
152 | static void |
153 | clearfreelist(void) |
154 | { |
155 | int i; |
156 | |
157 | for (i = 0; i < 17; i++) |
158 | setfreelist(i, 0, 0); |
159 | } |
160 | |
161 | static unsigned int |
162 | isinfreelist(unsigned int b) |
163 | { |
164 | int i; |
165 | |
166 | for (i = 0; i < 17; i++) |
167 | if (freelist[i].first <= b && freelist[i].last >= b) |
168 | return freelist[i].last; |
169 | return 0; |
170 | } |
171 | /* return last vacant block of this stride (never 0). */ |
172 | /* the '>=' is not quite correct, but simplifies the code */ |
173 | /* |
174 | * end of free blocks section |
175 | */ |
176 | |
177 | static const char *const sgi_sys_types[] = { |
178 | /* SGI_VOLHDR */ "\x00" "SGI volhdr" , |
179 | /* 0x01 */ "\x01" "SGI trkrepl" , |
180 | /* 0x02 */ "\x02" "SGI secrepl" , |
181 | /* SGI_SWAP */ "\x03" "SGI raw" , |
182 | /* 0x04 */ "\x04" "SGI bsd" , |
183 | /* 0x05 */ "\x05" "SGI sysv" , |
184 | /* SGI_ENTIRE_DISK */ "\x06" "SGI volume" , |
185 | /* SGI_EFS */ "\x07" "SGI efs" , |
186 | /* 0x08 */ "\x08" "SGI lvol" , |
187 | /* 0x09 */ "\x09" "SGI rlvol" , |
188 | /* SGI_XFS */ "\x0a" "SGI xfs" , |
189 | /* SGI_XFSLOG */ "\x0b" "SGI xfslog" , |
190 | /* SGI_XLV */ "\x0c" "SGI xlv" , |
191 | /* SGI_XVM */ "\x0d" "SGI xvm" , |
192 | /* LINUX_SWAP */ "\x82" "Linux swap" , |
193 | /* LINUX_NATIVE */ "\x83" "Linux native", |
194 | /* LINUX_LVM */ "\x8d" "Linux LVM" , |
195 | /* LINUX_RAID */ "\xfd" "Linux RAID" , |
196 | NULL |
197 | }; |
198 | |
199 | |
200 | static int |
201 | sgi_get_nsect(void) |
202 | { |
203 | return SGI_SSWAP16(sgilabel->devparam.nsect); |
204 | } |
205 | |
206 | static int |
207 | sgi_get_ntrks(void) |
208 | { |
209 | return SGI_SSWAP16(sgilabel->devparam.ntrks); |
210 | } |
211 | |
212 | static unsigned int |
213 | two_s_complement_32bit_sum(unsigned int* base, int size /* in bytes */) |
214 | { |
215 | int i = 0; |
216 | unsigned int sum = 0; |
217 | |
218 | size /= sizeof(unsigned int); |
219 | for (i = 0; i < size; i++) |
220 | sum -= SGI_SSWAP32(base[i]); |
221 | return sum; |
222 | } |
223 | |
224 | void BUG_bad_sgi_partition_size(void); |
225 | |
226 | static int |
227 | check_sgi_label(void) |
228 | { |
229 | if (sizeof(sgi_partition) > 512) { |
230 | /* According to MIPS Computer Systems, Inc the label |
231 | * must not contain more than 512 bytes */ |
232 | BUG_bad_sgi_partition_size(); |
233 | } |
234 | |
235 | if (sgilabel->magic != SGI_LABEL_MAGIC |
236 | && sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED |
237 | ) { |
238 | current_label_type = LABEL_DOS; |
239 | return 0; |
240 | } |
241 | |
242 | sgi_other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED); |
243 | /* |
244 | * test for correct checksum |
245 | */ |
246 | if (two_s_complement_32bit_sum((unsigned int*)sgilabel, |
247 | sizeof(*sgilabel))) { |
248 | printf("Detected sgi disklabel with wrong checksum\n"); |
249 | } |
250 | update_units(); |
251 | current_label_type = LABEL_SGI; |
252 | g_partitions = 16; |
253 | sgi_volumes = 15; |
254 | return 1; |
255 | } |
256 | |
257 | static unsigned int |
258 | sgi_get_start_sector(int i) |
259 | { |
260 | return SGI_SSWAP32(sgilabel->partitions[i].start_sector); |
261 | } |
262 | |
263 | static unsigned int |
264 | sgi_get_num_sectors(int i) |
265 | { |
266 | return SGI_SSWAP32(sgilabel->partitions[i].num_sectors); |
267 | } |
268 | |
269 | static int |
270 | sgi_get_sysid(int i) |
271 | { |
272 | return SGI_SSWAP32(sgilabel->partitions[i].id); |
273 | } |
274 | |
275 | static int |
276 | sgi_get_bootpartition(void) |
277 | { |
278 | return SGI_SSWAP16(sgilabel->boot_part); |
279 | } |
280 | |
281 | static int |
282 | sgi_get_swappartition(void) |
283 | { |
284 | return SGI_SSWAP16(sgilabel->swap_part); |
285 | } |
286 | |
287 | static void |
288 | sgi_list_table(int xtra) |
289 | { |
290 | int i, w, wd; |
291 | int kpi = 0; /* kernel partition ID */ |
292 | |
293 | if (xtra) { |
294 | printf("\nDisk %s (SGI disk label): %u heads, %u sectors\n" |
295 | "%u cylinders, %u physical cylinders\n" |
296 | "%u extra sects/cyl, interleave %u:1\n" |
297 | "%s\n" |
298 | "Units = %s of %u * 512 bytes\n\n", |
299 | disk_device, g_heads, g_sectors, g_cylinders, |
300 | SGI_SSWAP16(sgiparam.pcylcount), |
301 | SGI_SSWAP16(sgiparam.sparecyl), |
302 | SGI_SSWAP16(sgiparam.ilfact), |
303 | (char *)sgilabel, |
304 | str_units(PLURAL), units_per_sector); |
305 | } else { |
306 | printf("\nDisk %s (SGI disk label): " |
307 | "%u heads, %u sectors, %u cylinders\n" |
308 | "Units = %s of %u * 512 bytes\n\n", |
309 | disk_device, g_heads, g_sectors, g_cylinders, |
310 | str_units(PLURAL), units_per_sector ); |
311 | } |
312 | |
313 | w = strlen(disk_device); |
314 | wd = sizeof("Device") - 1; |
315 | if (w < wd) |
316 | w = wd; |
317 | |
318 | printf("----- partitions -----\n" |
319 | "Pt# %*s Info Start End Sectors Id System\n", |
320 | w + 2, "Device"); |
321 | for (i = 0; i < g_partitions; i++) { |
322 | if (sgi_get_num_sectors(i) || SGI_DEBUG) { |
323 | uint32_t start = sgi_get_start_sector(i); |
324 | uint32_t len = sgi_get_num_sectors(i); |
325 | kpi++; /* only count nonempty partitions */ |
326 | printf( |
327 | "%2u: %s %4s %9lu %9lu %9lu %2x %s\n", |
328 | /* fdisk part number */ i+1, |
329 | /* device */ partname(disk_device, kpi, w+3), |
330 | /* flags */ (sgi_get_swappartition() == i) ? "swap" : |
331 | /* flags */ (sgi_get_bootpartition() == i) ? "boot" : " ", |
332 | /* start */ (long) scround(start), |
333 | /* end */ (long) scround(start+len)-1, |
334 | /* no odd flag on end */(long) len, |
335 | /* type id */ sgi_get_sysid(i), |
336 | /* type name */ partition_type(sgi_get_sysid(i))); |
337 | } |
338 | } |
339 | printf("----- Bootinfo -----\nBootfile: %s\n" |
340 | "----- Directory Entries -----\n", |
341 | sgilabel->boot_file); |
342 | for (i = 0; i < sgi_volumes; i++) { |
343 | if (sgilabel->directory[i].vol_file_size) { |
344 | uint32_t start = SGI_SSWAP32(sgilabel->directory[i].vol_file_start); |
345 | uint32_t len = SGI_SSWAP32(sgilabel->directory[i].vol_file_size); |
346 | unsigned char *name = sgilabel->directory[i].vol_file_name; |
347 | |
348 | printf("%2u: %-10s sector%5u size%8u\n", |
349 | i, (char*)name, (unsigned int) start, (unsigned int) len); |
350 | } |
351 | } |
352 | } |
353 | |
354 | static void |
355 | sgi_set_bootpartition(int i) |
356 | { |
357 | sgilabel->boot_part = SGI_SSWAP16(((short)i)); |
358 | } |
359 | |
360 | static unsigned int |
361 | sgi_get_lastblock(void) |
362 | { |
363 | return g_heads * g_sectors * g_cylinders; |
364 | } |
365 | |
366 | static void |
367 | sgi_set_swappartition(int i) |
368 | { |
369 | sgilabel->swap_part = SGI_SSWAP16(((short)i)); |
370 | } |
371 | |
372 | static int |
373 | sgi_check_bootfile(const char* aFile) |
374 | { |
375 | if (strlen(aFile) < 3) /* "/a\n" is minimum */ { |
376 | printf("\nInvalid Bootfile!\n" |
377 | "\tThe bootfile must be an absolute non-zero pathname,\n" |
378 | "\te.g. \"/unix\" or \"/unix.save\".\n"); |
379 | return 0; |
380 | } |
381 | if (strlen(aFile) > 16) { |
382 | printf("\nName of Bootfile too long (>16 bytes)\n"); |
383 | return 0; |
384 | } |
385 | if (aFile[0] != '/') { |
386 | printf("\nBootfile must have a fully qualified pathname\n"); |
387 | return 0; |
388 | } |
389 | if (strncmp(aFile, (char*)sgilabel->boot_file, 16)) { |
390 | printf("\nBe aware, that the bootfile is not checked for existence.\n" |
391 | "\tSGI's default is \"/unix\" and for backup \"/unix.save\".\n"); |
392 | /* filename is correct and did change */ |
393 | return 1; |
394 | } |
395 | return 0; /* filename did not change */ |
396 | } |
397 | |
398 | static const char * |
399 | sgi_get_bootfile(void) |
400 | { |
401 | return (char*)sgilabel->boot_file; |
402 | } |
403 | |
404 | static void |
405 | sgi_set_bootfile(const char* aFile) |
406 | { |
407 | int i = 0; |
408 | |
409 | if (sgi_check_bootfile(aFile)) { |
410 | while (i < 16) { |
411 | if ((aFile[i] != '\n') /* in principle caught again by next line */ |
412 | && (strlen(aFile) > i)) |
413 | sgilabel->boot_file[i] = aFile[i]; |
414 | else |
415 | sgilabel->boot_file[i] = 0; |
416 | i++; |
417 | } |
418 | printf("\n\tBootfile is changed to \"%s\"\n", sgilabel->boot_file); |
419 | } |
420 | } |
421 | |
422 | static void |
423 | create_sgiinfo(void) |
424 | { |
425 | /* I keep SGI's habit to write the sgilabel to the second block */ |
426 | sgilabel->directory[0].vol_file_start = SGI_SSWAP32(2); |
427 | sgilabel->directory[0].vol_file_size = SGI_SSWAP32(sizeof(sgiinfo)); |
428 | strncpy((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8); |
429 | } |
430 | |
431 | static sgiinfo *fill_sgiinfo(void); |
432 | |
433 | static void |
434 | sgi_write_table(void) |
435 | { |
436 | sgilabel->csum = 0; |
437 | sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum( |
438 | (unsigned int*)sgilabel, sizeof(*sgilabel))); |
439 | assert(two_s_complement_32bit_sum( |
440 | (unsigned int*)sgilabel, sizeof(*sgilabel)) == 0); |
441 | |
442 | write_sector(0, sgilabel); |
443 | if (!strncmp((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8)) { |
444 | /* |
445 | * keep this habit of first writing the "sgilabel". |
446 | * I never tested whether it works without (AN 981002). |
447 | */ |
448 | sgiinfo *info = fill_sgiinfo(); |
449 | int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start); |
450 | write_sector(infostartblock, info); |
451 | free(info); |
452 | } |
453 | } |
454 | |
455 | static int |
456 | compare_start(int *x, int *y) |
457 | { |
458 | /* |
459 | * sort according to start sectors |
460 | * and prefers largest partition: |
461 | * entry zero is entire disk entry |
462 | */ |
463 | unsigned int i = *x; |
464 | unsigned int j = *y; |
465 | unsigned int a = sgi_get_start_sector(i); |
466 | unsigned int b = sgi_get_start_sector(j); |
467 | unsigned int c = sgi_get_num_sectors(i); |
468 | unsigned int d = sgi_get_num_sectors(j); |
469 | |
470 | if (a == b) |
471 | return (d > c) ? 1 : (d == c) ? 0 : -1; |
472 | return (a > b) ? 1 : -1; |
473 | } |
474 | |
475 | |
476 | static int |
477 | verify_sgi(int verbose) |
478 | { |
479 | int Index[16]; /* list of valid partitions */ |
480 | int sortcount = 0; /* number of used partitions, i.e. non-zero lengths */ |
481 | int entire = 0, i = 0; |
482 | unsigned int start = 0; |
483 | long long gap = 0; /* count unused blocks */ |
484 | unsigned int lastblock = sgi_get_lastblock(); |
485 | |
486 | clearfreelist(); |
487 | for (i = 0; i < 16; i++) { |
488 | if (sgi_get_num_sectors(i) != 0) { |
489 | Index[sortcount++] = i; |
490 | if (sgi_get_sysid(i) == SGI_ENTIRE_DISK) { |
491 | if (entire++ == 1) { |
492 | if (verbose) |
493 | printf("More than one entire disk entry present\n"); |
494 | } |
495 | } |
496 | } |
497 | } |
498 | if (sortcount == 0) { |
499 | if (verbose) |
500 | printf("No partitions defined\n"); |
501 | return (lastblock > 0) ? 1 : (lastblock == 0) ? 0 : -1; |
502 | } |
503 | qsort(Index, sortcount, sizeof(Index[0]), (void*)compare_start); |
504 | if (sgi_get_sysid(Index[0]) == SGI_ENTIRE_DISK) { |
505 | if ((Index[0] != 10) && verbose) |
506 | printf("IRIX likes when Partition 11 covers the entire disk\n"); |
507 | if ((sgi_get_start_sector(Index[0]) != 0) && verbose) |
508 | printf("The entire disk partition should start " |
509 | "at block 0,\n" |
510 | "not at diskblock %u\n", |
511 | sgi_get_start_sector(Index[0])); |
512 | if (SGI_DEBUG) /* I do not understand how some disks fulfil it */ |
513 | if ((sgi_get_num_sectors(Index[0]) != lastblock) && verbose) |
514 | printf("The entire disk partition is only %u diskblock large,\n" |
515 | "but the disk is %u diskblocks long\n", |
516 | sgi_get_num_sectors(Index[0]), lastblock); |
517 | lastblock = sgi_get_num_sectors(Index[0]); |
518 | } else { |
519 | if (verbose) |
520 | printf("One Partition (#11) should cover the entire disk\n"); |
521 | if (SGI_DEBUG > 2) |
522 | printf("sysid=%u\tpartition=%u\n", |
523 | sgi_get_sysid(Index[0]), Index[0]+1); |
524 | } |
525 | for (i = 1, start = 0; i < sortcount; i++) { |
526 | int cylsize = sgi_get_nsect() * sgi_get_ntrks(); |
527 | |
528 | if ((sgi_get_start_sector(Index[i]) % cylsize) != 0) { |
529 | if (SGI_DEBUG) /* I do not understand how some disks fulfil it */ |
530 | if (verbose) |
531 | printf("Partition %u does not start on cylinder boundary\n", |
532 | Index[i]+1); |
533 | } |
534 | if (sgi_get_num_sectors(Index[i]) % cylsize != 0) { |
535 | if (SGI_DEBUG) /* I do not understand how some disks fulfil it */ |
536 | if (verbose) |
537 | printf("Partition %u does not end on cylinder boundary\n", |
538 | Index[i]+1); |
539 | } |
540 | /* We cannot handle several "entire disk" entries. */ |
541 | if (sgi_get_sysid(Index[i]) == SGI_ENTIRE_DISK) continue; |
542 | if (start > sgi_get_start_sector(Index[i])) { |
543 | if (verbose) |
544 | printf("Partitions %u and %u overlap by %u sectors\n", |
545 | Index[i-1]+1, Index[i]+1, |
546 | start - sgi_get_start_sector(Index[i])); |
547 | if (gap > 0) gap = -gap; |
548 | if (gap == 0) gap = -1; |
549 | } |
550 | if (start < sgi_get_start_sector(Index[i])) { |
551 | if (verbose) |
552 | printf("Unused gap of %u sectors - sectors %u-%u\n", |
553 | sgi_get_start_sector(Index[i]) - start, |
554 | start, sgi_get_start_sector(Index[i])-1); |
555 | gap += sgi_get_start_sector(Index[i]) - start; |
556 | add2freelist(start, sgi_get_start_sector(Index[i])); |
557 | } |
558 | start = sgi_get_start_sector(Index[i]) |
559 | + sgi_get_num_sectors(Index[i]); |
560 | if (SGI_DEBUG > 1) { |
561 | if (verbose) |
562 | printf("%2u:%12u\t%12u\t%12u\n", Index[i], |
563 | sgi_get_start_sector(Index[i]), |
564 | sgi_get_num_sectors(Index[i]), |
565 | sgi_get_sysid(Index[i])); |
566 | } |
567 | } |
568 | if (start < lastblock) { |
569 | if (verbose) |
570 | printf("Unused gap of %u sectors - sectors %u-%u\n", |
571 | lastblock - start, start, lastblock-1); |
572 | gap += lastblock - start; |
573 | add2freelist(start, lastblock); |
574 | } |
575 | /* |
576 | * Done with arithmetics |
577 | * Go for details now |
578 | */ |
579 | if (verbose) { |
580 | if (!sgi_get_num_sectors(sgi_get_bootpartition())) { |
581 | printf("\nThe boot partition does not exist\n"); |
582 | } |
583 | if (!sgi_get_num_sectors(sgi_get_swappartition())) { |
584 | printf("\nThe swap partition does not exist\n"); |
585 | } else { |
586 | if ((sgi_get_sysid(sgi_get_swappartition()) != SGI_SWAP) |
587 | && (sgi_get_sysid(sgi_get_swappartition()) != LINUX_SWAP)) |
588 | printf("\nThe swap partition has no swap type\n"); |
589 | } |
590 | if (sgi_check_bootfile("/unix")) |
591 | printf("\tYou have chosen an unusual boot file name\n"); |
592 | } |
593 | return (gap > 0) ? 1 : (gap == 0) ? 0 : -1; |
594 | } |
595 | |
596 | static int |
597 | sgi_gaps(void) |
598 | { |
599 | /* |
600 | * returned value is: |
601 | * = 0 : disk is properly filled to the rim |
602 | * < 0 : there is an overlap |
603 | * > 0 : there is still some vacant space |
604 | */ |
605 | return verify_sgi(0); |
606 | } |
607 | |
608 | static void |
609 | sgi_change_sysid(int i, int sys) |
610 | { |
611 | if (sgi_get_num_sectors(i) == 0) { /* caught already before, ... */ |
612 | printf("Sorry you may change the Tag of non-empty partitions\n"); |
613 | return; |
614 | } |
615 | if ((sys != SGI_ENTIRE_DISK) && (sys != SGI_VOLHDR) |
616 | && (sgi_get_start_sector(i) < 1) |
617 | ) { |
618 | read_maybe_empty( |
619 | "It is highly recommended that the partition at offset 0\n" |
620 | "is of type \"SGI volhdr\", the IRIX system will rely on it to\n" |
621 | "retrieve from its directory standalone tools like sash and fx.\n" |
622 | "Only the \"SGI volume\" entire disk section may violate this.\n" |
623 | "Type YES if you are sure about tagging this partition differently.\n"); |
624 | if (strcmp(line_ptr, "YES\n") != 0) |
625 | return; |
626 | } |
627 | sgilabel->partitions[i].id = SGI_SSWAP32(sys); |
628 | } |
629 | |
630 | /* returns partition index of first entry marked as entire disk */ |
631 | static int |
632 | sgi_entire(void) |
633 | { |
634 | int i; |
635 | |
636 | for (i = 0; i < 16; i++) |
637 | if (sgi_get_sysid(i) == SGI_VOLUME) |
638 | return i; |
639 | return -1; |
640 | } |
641 | |
642 | static void |
643 | sgi_set_partition(int i, unsigned int start, unsigned int length, int sys) |
644 | { |
645 | sgilabel->partitions[i].id = SGI_SSWAP32(sys); |
646 | sgilabel->partitions[i].num_sectors = SGI_SSWAP32(length); |
647 | sgilabel->partitions[i].start_sector = SGI_SSWAP32(start); |
648 | set_changed(i); |
649 | if (sgi_gaps() < 0) /* rebuild freelist */ |
650 | printf("Partition overlap detected\n"); |
651 | } |
652 | |
653 | static void |
654 | sgi_set_entire(void) |
655 | { |
656 | int n; |
657 | |
658 | for (n = 10; n < g_partitions; n++) { |
659 | if (!sgi_get_num_sectors(n) ) { |
660 | sgi_set_partition(n, 0, sgi_get_lastblock(), SGI_VOLUME); |
661 | break; |
662 | } |
663 | } |
664 | } |
665 | |
666 | static void |
667 | sgi_set_volhdr(void) |
668 | { |
669 | int n; |
670 | |
671 | for (n = 8; n < g_partitions; n++) { |
672 | if (!sgi_get_num_sectors(n)) { |
673 | /* |
674 | * 5 cylinders is an arbitrary value I like |
675 | * IRIX 5.3 stored files in the volume header |
676 | * (like sash, symmon, fx, ide) with ca. 3200 |
677 | * sectors. |
678 | */ |
679 | if (g_heads * g_sectors * 5 < sgi_get_lastblock()) |
680 | sgi_set_partition(n, 0, g_heads * g_sectors * 5, SGI_VOLHDR); |
681 | break; |
682 | } |
683 | } |
684 | } |
685 | |
686 | static void |
687 | sgi_delete_partition(int i) |
688 | { |
689 | sgi_set_partition(i, 0, 0, 0); |
690 | } |
691 | |
692 | static void |
693 | sgi_add_partition(int n, int sys) |
694 | { |
695 | char mesg[256]; |
696 | unsigned int first = 0, last = 0; |
697 | |
698 | if (n == 10) { |
699 | sys = SGI_VOLUME; |
700 | } else if (n == 8) { |
701 | sys = 0; |
702 | } |
703 | if (sgi_get_num_sectors(n)) { |
704 | printf(msg_part_already_defined, n + 1); |
705 | return; |
706 | } |
707 | if ((sgi_entire() == -1) && (sys != SGI_VOLUME)) { |
708 | printf("Attempting to generate entire disk entry automatically\n"); |
709 | sgi_set_entire(); |
710 | sgi_set_volhdr(); |
711 | } |
712 | if ((sgi_gaps() == 0) && (sys != SGI_VOLUME)) { |
713 | printf("The entire disk is already covered with partitions\n"); |
714 | return; |
715 | } |
716 | if (sgi_gaps() < 0) { |
717 | printf("You got a partition overlap on the disk. Fix it first!\n"); |
718 | return; |
719 | } |
720 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR)); |
721 | while (1) { |
722 | if (sys == SGI_VOLUME) { |
723 | last = sgi_get_lastblock(); |
724 | first = read_int(0, 0, last-1, 0, mesg); |
725 | if (first != 0) { |
726 | printf("It is highly recommended that eleventh partition\n" |
727 | "covers the entire disk and is of type 'SGI volume'\n"); |
728 | } |
729 | } else { |
730 | first = freelist[0].first; |
731 | last = freelist[0].last; |
732 | first = read_int(scround(first), scround(first), scround(last)-1, |
733 | 0, mesg); |
734 | } |
735 | if (display_in_cyl_units) |
736 | first *= units_per_sector; |
737 | else |
738 | first = first; /* align to cylinder if you know how ... */ |
739 | if (!last ) |
740 | last = isinfreelist(first); |
741 | if (last != 0) |
742 | break; |
743 | printf("You will get a partition overlap on the disk. " |
744 | "Fix it first!\n"); |
745 | } |
746 | snprintf(mesg, sizeof(mesg), " Last %s", str_units(SINGULAR)); |
747 | last = read_int(scround(first), scround(last)-1, scround(last)-1, |
748 | scround(first), mesg)+1; |
749 | if (display_in_cyl_units) |
750 | last *= units_per_sector; |
751 | else |
752 | last = last; /* align to cylinder if You know how ... */ |
753 | if ( (sys == SGI_VOLUME) && (first != 0 || last != sgi_get_lastblock() ) ) |
754 | printf("It is highly recommended that eleventh partition\n" |
755 | "covers the entire disk and is of type 'SGI volume'\n"); |
756 | sgi_set_partition(n, first, last-first, sys); |
757 | } |
758 | |
759 | #if ENABLE_FEATURE_FDISK_ADVANCED |
760 | static void |
761 | create_sgilabel(void) |
762 | { |
763 | struct hd_geometry geometry; |
764 | struct { |
765 | unsigned int start; |
766 | unsigned int nsect; |
767 | int sysid; |
768 | } old[4]; |
769 | int i = 0; |
770 | long longsectors; /* the number of sectors on the device */ |
771 | int res; /* the result from the ioctl */ |
772 | int sec_fac; /* the sector factor */ |
773 | |
774 | sec_fac = sector_size / 512; /* determine the sector factor */ |
775 | |
776 | printf(msg_building_new_label, "SGI disklabel"); |
777 | |
778 | sgi_other_endian = BB_LITTLE_ENDIAN; |
779 | res = ioctl(dev_fd, BLKGETSIZE, &longsectors); |
780 | if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) { |
781 | g_heads = geometry.heads; |
782 | g_sectors = geometry.sectors; |
783 | if (res == 0) { |
784 | /* the get device size ioctl was successful */ |
785 | g_cylinders = longsectors / (g_heads * g_sectors); |
786 | g_cylinders /= sec_fac; |
787 | } else { |
788 | /* otherwise print error and use truncated version */ |
789 | g_cylinders = geometry.cylinders; |
790 | printf( |
791 | "Warning: BLKGETSIZE ioctl failed on %s. Using geometry cylinder value of %u.\n" |
792 | "This value may be truncated for devices > 33.8 GB.\n", disk_device, g_cylinders); |
793 | } |
794 | } |
795 | for (i = 0; i < 4; i++) { |
796 | old[i].sysid = 0; |
797 | if (valid_part_table_flag(MBRbuffer)) { |
798 | if (get_part_table(i)->sys_ind) { |
799 | old[i].sysid = get_part_table(i)->sys_ind; |
800 | old[i].start = get_start_sect(get_part_table(i)); |
801 | old[i].nsect = get_nr_sects(get_part_table(i)); |
802 | printf("Trying to keep parameters of partition %u\n", i); |
803 | if (SGI_DEBUG) |
804 | printf("ID=%02x\tSTART=%u\tLENGTH=%u\n", |
805 | old[i].sysid, old[i].start, old[i].nsect); |
806 | } |
807 | } |
808 | } |
809 | |
810 | memset(MBRbuffer, 0, sizeof(MBRbuffer)); |
811 | /* fields with '//' are already zeroed out by memset above */ |
812 | |
813 | sgilabel->magic = SGI_SSWAP32(SGI_LABEL_MAGIC); |
814 | //sgilabel->boot_part = SGI_SSWAP16(0); |
815 | sgilabel->swap_part = SGI_SSWAP16(1); |
816 | |
817 | //memset(sgilabel->boot_file, 0, 16); |
818 | strcpy((char*)sgilabel->boot_file, "/unix"); /* sizeof(sgilabel->boot_file) == 16 > 6 */ |
819 | |
820 | //sgilabel->devparam.skew = (0); |
821 | //sgilabel->devparam.gap1 = (0); |
822 | //sgilabel->devparam.gap2 = (0); |
823 | //sgilabel->devparam.sparecyl = (0); |
824 | sgilabel->devparam.pcylcount = SGI_SSWAP16(geometry.cylinders); |
825 | //sgilabel->devparam.head_vol0 = SGI_SSWAP16(0); |
826 | /* tracks/cylinder (heads) */ |
827 | sgilabel->devparam.ntrks = SGI_SSWAP16(geometry.heads); |
828 | //sgilabel->devparam.cmd_tag_queue_depth = (0); |
829 | //sgilabel->devparam.unused0 = (0); |
830 | //sgilabel->devparam.unused1 = SGI_SSWAP16(0); |
831 | /* sectors/track */ |
832 | sgilabel->devparam.nsect = SGI_SSWAP16(geometry.sectors); |
833 | sgilabel->devparam.bytes = SGI_SSWAP16(512); |
834 | sgilabel->devparam.ilfact = SGI_SSWAP16(1); |
835 | sgilabel->devparam.flags = SGI_SSWAP32(TRACK_FWD| |
836 | IGNORE_ERRORS|RESEEK); |
837 | //sgilabel->devparam.datarate = SGI_SSWAP32(0); |
838 | sgilabel->devparam.retries_on_error = SGI_SSWAP32(1); |
839 | //sgilabel->devparam.ms_per_word = SGI_SSWAP32(0); |
840 | //sgilabel->devparam.xylogics_gap1 = SGI_SSWAP16(0); |
841 | //sgilabel->devparam.xylogics_syncdelay = SGI_SSWAP16(0); |
842 | //sgilabel->devparam.xylogics_readdelay = SGI_SSWAP16(0); |
843 | //sgilabel->devparam.xylogics_gap2 = SGI_SSWAP16(0); |
844 | //sgilabel->devparam.xylogics_readgate = SGI_SSWAP16(0); |
845 | //sgilabel->devparam.xylogics_writecont = SGI_SSWAP16(0); |
846 | //memset( &(sgilabel->directory), 0, sizeof(struct volume_directory)*15 ); |
847 | //memset( &(sgilabel->partitions), 0, sizeof(struct sgi_partinfo)*16 ); |
848 | current_label_type = LABEL_SGI; |
849 | g_partitions = 16; |
850 | sgi_volumes = 15; |
851 | sgi_set_entire(); |
852 | sgi_set_volhdr(); |
853 | for (i = 0; i < 4; i++) { |
854 | if (old[i].sysid) { |
855 | sgi_set_partition(i, old[i].start, old[i].nsect, old[i].sysid); |
856 | } |
857 | } |
858 | } |
859 | |
860 | static void |
861 | sgi_set_xcyl(void) |
862 | { |
863 | /* do nothing in the beginning */ |
864 | } |
865 | #endif /* FEATURE_FDISK_ADVANCED */ |
866 | |
867 | /* _____________________________________________________________ |
868 | */ |
869 | |
870 | static sgiinfo * |
871 | fill_sgiinfo(void) |
872 | { |
873 | sgiinfo *info = xzalloc(sizeof(sgiinfo)); |
874 | |
875 | info->magic = SGI_SSWAP32(SGI_INFO_MAGIC); |
876 | info->b1 = SGI_SSWAP32(-1); |
877 | info->b2 = SGI_SSWAP16(-1); |
878 | info->b3 = SGI_SSWAP16(1); |
879 | /* You may want to replace this string !!!!!!! */ |
880 | strcpy( (char*)info->scsi_string, "IBM OEM 0662S12 3 30" ); |
881 | strcpy( (char*)info->serial, "0000" ); |
882 | info->check1816 = SGI_SSWAP16(18*256 +16 ); |
883 | strcpy( (char*)info->installer, "Sfx version 5.3, Oct 18, 1994" ); |
884 | return info; |
885 | } |
886 | #endif /* SGI_LABEL */ |