source: MondoRescue/branches/3.3/mindi-busybox/util-linux/fdisk_osf.c@ 3621

Last change on this file since 3621 was 3621, checked in by Bruno Cornec, 7 years ago

New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
  • Property svn:eol-style set to native
File size: 29.2 KB
Line 
1/*
2 * Copyright (c) 1987, 1988 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgment:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if ENABLE_FEATURE_OSF_LABEL
35
36#ifndef BSD_DISKMAGIC
37#define BSD_DISKMAGIC ((uint32_t) 0x82564557)
38#endif
39
40#ifndef BSD_MAXPARTITIONS
41#define BSD_MAXPARTITIONS 16
42#endif
43
44#define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
45
46#if defined(__alpha__) \
47 || defined(__powerpc__) \
48 || defined(__ia64__) \
49 || defined(__hppa__)
50# define BSD_LABELSECTOR 0
51# define BSD_LABELOFFSET 64
52#else
53# define BSD_LABELSECTOR 1
54# define BSD_LABELOFFSET 0
55#endif
56
57#define BSD_BBSIZE 8192 /* size of boot area, with label */
58#define BSD_SBSIZE 8192 /* max size of fs superblock */
59
60struct xbsd_disklabel {
61 uint32_t d_magic; /* the magic number */
62 int16_t d_type; /* drive type */
63 int16_t d_subtype; /* controller/d_type specific */
64 char d_typename[16]; /* type name, e.g. "eagle" */
65 char d_packname[16]; /* pack identifier */
66 /* disk geometry: */
67 uint32_t d_secsize; /* # of bytes per sector */
68 uint32_t d_nsectors; /* # of data sectors per track */
69 uint32_t d_ntracks; /* # of tracks per cylinder */
70 uint32_t d_ncylinders; /* # of data cylinders per unit */
71 uint32_t d_secpercyl; /* # of data sectors per cylinder */
72 uint32_t d_secperunit; /* # of data sectors per unit */
73 /*
74 * Spares (bad sector replacements) below
75 * are not counted in d_nsectors or d_secpercyl.
76 * Spare sectors are assumed to be physical sectors
77 * which occupy space at the end of each track and/or cylinder.
78 */
79 uint16_t d_sparespertrack; /* # of spare sectors per track */
80 uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
81 /*
82 * Alternate cylinders include maintenance, replacement,
83 * configuration description areas, etc.
84 */
85 uint32_t d_acylinders; /* # of alt. cylinders per unit */
86
87 /* hardware characteristics: */
88 /*
89 * d_interleave, d_trackskew and d_cylskew describe perturbations
90 * in the media format used to compensate for a slow controller.
91 * Interleave is physical sector interleave, set up by the formatter
92 * or controller when formatting. When interleaving is in use,
93 * logically adjacent sectors are not physically contiguous,
94 * but instead are separated by some number of sectors.
95 * It is specified as the ratio of physical sectors traversed
96 * per logical sector. Thus an interleave of 1:1 implies contiguous
97 * layout, while 2:1 implies that logical sector 0 is separated
98 * by one sector from logical sector 1.
99 * d_trackskew is the offset of sector 0 on track N
100 * relative to sector 0 on track N-1 on the same cylinder.
101 * Finally, d_cylskew is the offset of sector 0 on cylinder N
102 * relative to sector 0 on cylinder N-1.
103 */
104 uint16_t d_rpm; /* rotational speed */
105 uint16_t d_interleave; /* hardware sector interleave */
106 uint16_t d_trackskew; /* sector 0 skew, per track */
107 uint16_t d_cylskew; /* sector 0 skew, per cylinder */
108 uint32_t d_headswitch; /* head switch time, usec */
109 uint32_t d_trkseek; /* track-to-track seek, usec */
110 uint32_t d_flags; /* generic flags */
111#define NDDATA 5
112 uint32_t d_drivedata[NDDATA]; /* drive-type specific information */
113#define NSPARE 5
114 uint32_t d_spare[NSPARE]; /* reserved for future use */
115 uint32_t d_magic2; /* the magic number (again) */
116 uint16_t d_checksum; /* xor of data incl. partitions */
117 /* filesystem and partition information: */
118 uint16_t d_npartitions; /* number of partitions in following */
119 uint32_t d_bbsize; /* size of boot area at sn0, bytes */
120 uint32_t d_sbsize; /* max size of fs superblock, bytes */
121 struct xbsd_partition { /* the partition table */
122 uint32_t p_size; /* number of sectors in partition */
123 uint32_t p_offset; /* starting sector */
124 uint32_t p_fsize; /* filesystem basic fragment size */
125 uint8_t p_fstype; /* filesystem type, see below */
126 uint8_t p_frag; /* filesystem fragments per block */
127 uint16_t p_cpg; /* filesystem cylinders per group */
128 } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
129};
130
131/* d_type values: */
132#define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
133#define BSD_DTYPE_MSCP 2 /* MSCP */
134#define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */
135#define BSD_DTYPE_SCSI 4 /* SCSI */
136#define BSD_DTYPE_ESDI 5 /* ESDI interface */
137#define BSD_DTYPE_ST506 6 /* ST506 etc. */
138#define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */
139#define BSD_DTYPE_HPFL 8 /* HP Fiber-link */
140#define BSD_DTYPE_FLOPPY 10 /* floppy */
141
142/* d_subtype values: */
143#define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */
144#define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
145#define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
146
147static const char *const xbsd_dktypenames[] = {
148 "unknown",
149 "SMD",
150 "MSCP",
151 "old DEC",
152 "SCSI",
153 "ESDI",
154 "ST506",
155 "HP-IB",
156 "HP-FL",
157 "type 9",
158 "floppy",
159 0
160};
161
162
163/*
164 * Filesystem type and version.
165 * Used to interpret other filesystem-specific
166 * per-partition information.
167 */
168#define BSD_FS_UNUSED 0 /* unused */
169#define BSD_FS_SWAP 1 /* swap */
170#define BSD_FS_V6 2 /* Sixth Edition */
171#define BSD_FS_V7 3 /* Seventh Edition */
172#define BSD_FS_SYSV 4 /* System V */
173#define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
174#define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
175#define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
176#define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
177#define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
178#define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
179#define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */
180#define BSD_FS_ISOFS BSD_FS_ISO9660
181#define BSD_FS_BOOT 13 /* partition contains bootstrap */
182#define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
183#define BSD_FS_HFS 15 /* Macintosh HFS */
184#define BSD_FS_ADVFS 16 /* Digital Unix AdvFS */
185
186/* this is annoying, but it's also the way it is :-( */
187#ifdef __alpha__
188#define BSD_FS_EXT2 8 /* ext2 file system */
189#else
190#define BSD_FS_MSDOS 8 /* MS-DOS file system */
191#endif
192
193static const char *const xbsd_fstypes[] = {
194 "\x00" "unused", /* BSD_FS_UNUSED */
195 "\x01" "swap", /* BSD_FS_SWAP */
196 "\x02" "Version 6", /* BSD_FS_V6 */
197 "\x03" "Version 7", /* BSD_FS_V7 */
198 "\x04" "System V", /* BSD_FS_SYSV */
199 "\x05" "4.1BSD", /* BSD_FS_V71K */
200 "\x06" "Eighth Edition", /* BSD_FS_V8 */
201 "\x07" "4.2BSD", /* BSD_FS_BSDFFS */
202#ifdef __alpha__
203 "\x08" "ext2", /* BSD_FS_EXT2 */
204#else
205 "\x08" "MS-DOS", /* BSD_FS_MSDOS */
206#endif
207 "\x09" "4.4LFS", /* BSD_FS_BSDLFS */
208 "\x0a" "unknown", /* BSD_FS_OTHER */
209 "\x0b" "HPFS", /* BSD_FS_HPFS */
210 "\x0c" "ISO-9660", /* BSD_FS_ISO9660 */
211 "\x0d" "boot", /* BSD_FS_BOOT */
212 "\x0e" "ADOS", /* BSD_FS_ADOS */
213 "\x0f" "HFS", /* BSD_FS_HFS */
214 "\x10" "AdvFS", /* BSD_FS_ADVFS */
215 NULL
216};
217
218
219/*
220 * flags shared by various drives:
221 */
222#define BSD_D_REMOVABLE 0x01 /* removable media */
223#define BSD_D_ECC 0x02 /* supports ECC */
224#define BSD_D_BADSECT 0x04 /* supports bad sector forw. */
225#define BSD_D_RAMDISK 0x08 /* disk emulator */
226#define BSD_D_CHAIN 0x10 /* can do back-back transfers */
227#define BSD_D_DOSPART 0x20 /* within MSDOS partition */
228
229/*
230 Changes:
231 19990319 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - i18n/nls
232
233 20000101 - David Huggins-Daines <dhuggins@linuxcare.com> - Better
234 support for OSF/1 disklabels on Alpha.
235 Also fixed unaligned accesses in alpha_bootblock_checksum()
236*/
237
238#define FREEBSD_PARTITION 0xa5
239#define NETBSD_PARTITION 0xa9
240
241static void xbsd_delete_part(void);
242static void xbsd_new_part(void);
243static void xbsd_write_disklabel(void);
244static int xbsd_create_disklabel(void);
245static void xbsd_edit_disklabel(void);
246static void xbsd_write_bootstrap(void);
247static void xbsd_change_fstype(void);
248static int xbsd_get_part_index(int max);
249static int xbsd_check_new_partition(int *i);
250static void xbsd_list_types(void);
251static uint16_t xbsd_dkcksum(struct xbsd_disklabel *lp);
252static int xbsd_initlabel(struct partition *p);
253static int xbsd_readlabel(struct partition *p);
254static int xbsd_writelabel(struct partition *p);
255
256#if defined(__alpha__)
257static void alpha_bootblock_checksum(char *boot);
258#endif
259
260#if !defined(__alpha__)
261static int xbsd_translate_fstype(int linux_type);
262static void xbsd_link_part(void);
263static struct partition *xbsd_part;
264static int xbsd_part_index;
265#endif
266
267
268/* Group big globals data and allocate it in one go */
269struct bsd_globals {
270/* We access this through a uint64_t * when checksumming */
271/* hopefully xmalloc gives us required alignment */
272 char disklabelbuffer[BSD_BBSIZE];
273 struct xbsd_disklabel xbsd_dlabel;
274};
275
276static struct bsd_globals *bsd_globals_ptr;
277
278#define disklabelbuffer (bsd_globals_ptr->disklabelbuffer)
279#define xbsd_dlabel (bsd_globals_ptr->xbsd_dlabel)
280
281
282/* Code */
283
284#define bsd_cround(n) \
285 (display_in_cyl_units ? ((n)/xbsd_dlabel.d_secpercyl) + 1 : (n))
286
287/*
288 * Test whether the whole disk has BSD disk label magic.
289 *
290 * Note: often reformatting with DOS-type label leaves the BSD magic,
291 * so this does not mean that there is a BSD disk label.
292 */
293static int
294check_osf_label(void)
295{
296 if (xbsd_readlabel(NULL) == 0)
297 return 0;
298 return 1;
299}
300
301static int
302bsd_trydev(const char * dev)
303{
304 if (xbsd_readlabel(NULL) == 0)
305 return -1;
306 printf("\nBSD label for device: %s\n", dev);
307 xbsd_print_disklabel(0);
308 return 0;
309}
310
311static void
312bsd_menu(void)
313{
314 puts("Command Action");
315 puts("d\tdelete a BSD partition");
316 puts("e\tedit drive data");
317 puts("i\tinstall bootstrap");
318 puts("l\tlist known filesystem types");
319 puts("n\tadd a new BSD partition");
320 puts("p\tprint BSD partition table");
321 puts("q\tquit without saving changes");
322 puts("r\treturn to main menu");
323 puts("s\tshow complete disklabel");
324 puts("t\tchange a partition's filesystem id");
325 puts("u\tchange units (cylinders/sectors)");
326 puts("w\twrite disklabel to disk");
327#if !defined(__alpha__)
328 puts("x\tlink BSD partition to non-BSD partition");
329#endif
330}
331
332#if !defined(__alpha__)
333static int
334hidden(int type)
335{
336 return type ^ 0x10;
337}
338
339static int
340is_bsd_partition_type(int type)
341{
342 return (type == FREEBSD_PARTITION ||
343 type == hidden(FREEBSD_PARTITION) ||
344 type == NETBSD_PARTITION ||
345 type == hidden(NETBSD_PARTITION));
346}
347#endif
348
349static void
350bsd_select(void)
351{
352#if !defined(__alpha__)
353 int t, ss;
354 struct partition *p;
355
356 for (t = 0; t < 4; t++) {
357 p = get_part_table(t);
358 if (p && is_bsd_partition_type(p->sys_ind)) {
359 xbsd_part = p;
360 xbsd_part_index = t;
361 ss = get_start_sect(xbsd_part);
362 if (ss == 0) {
363 printf("Partition %s has invalid starting sector 0\n",
364 partname(disk_device, t+1, 0));
365 return;
366 }
367 printf("Reading disklabel of %s at sector %u\n",
368 partname(disk_device, t+1, 0), ss + BSD_LABELSECTOR);
369 if (xbsd_readlabel(xbsd_part) == 0) {
370 if (xbsd_create_disklabel() == 0)
371 return;
372 break;
373 }
374 }
375 }
376
377 if (t == 4) {
378 printf("There is no *BSD partition on %s\n", disk_device);
379 return;
380 }
381
382#elif defined(__alpha__)
383
384 if (xbsd_readlabel(NULL) == 0)
385 if (xbsd_create_disklabel() == 0)
386 exit(EXIT_SUCCESS);
387
388#endif
389
390 while (1) {
391 bb_putchar('\n');
392 switch (tolower(read_nonempty("BSD disklabel command (m for help): "))) {
393 case 'd':
394 xbsd_delete_part();
395 break;
396 case 'e':
397 xbsd_edit_disklabel();
398 break;
399 case 'i':
400 xbsd_write_bootstrap();
401 break;
402 case 'l':
403 xbsd_list_types();
404 break;
405 case 'n':
406 xbsd_new_part();
407 break;
408 case 'p':
409 xbsd_print_disklabel(0);
410 break;
411 case 'q':
412 if (ENABLE_FEATURE_CLEAN_UP)
413 close_dev_fd();
414 exit(EXIT_SUCCESS);
415 case 'r':
416 return;
417 case 's':
418 xbsd_print_disklabel(1);
419 break;
420 case 't':
421 xbsd_change_fstype();
422 break;
423 case 'u':
424 change_units();
425 break;
426 case 'w':
427 xbsd_write_disklabel();
428 break;
429#if !defined(__alpha__)
430 case 'x':
431 xbsd_link_part();
432 break;
433#endif
434 default:
435 bsd_menu();
436 break;
437 }
438 }
439}
440
441static void
442xbsd_delete_part(void)
443{
444 int i;
445
446 i = xbsd_get_part_index(xbsd_dlabel.d_npartitions);
447 xbsd_dlabel.d_partitions[i].p_size = 0;
448 xbsd_dlabel.d_partitions[i].p_offset = 0;
449 xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
450 if (xbsd_dlabel.d_npartitions == i + 1)
451 while (xbsd_dlabel.d_partitions[xbsd_dlabel.d_npartitions-1].p_size == 0)
452 xbsd_dlabel.d_npartitions--;
453}
454
455static void
456xbsd_new_part(void)
457{
458 off_t begin, end;
459 char mesg[256];
460 int i;
461
462 if (!xbsd_check_new_partition(&i))
463 return;
464
465#if !defined(__alpha__) && !defined(__powerpc__) && !defined(__hppa__)
466 begin = get_start_sect(xbsd_part);
467 end = begin + get_nr_sects(xbsd_part) - 1;
468#else
469 begin = 0;
470 end = xbsd_dlabel.d_secperunit - 1;
471#endif
472
473 snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
474 begin = read_int(bsd_cround(begin), bsd_cround(begin), bsd_cround(end),
475 0, mesg);
476
477 if (display_in_cyl_units)
478 begin = (begin - 1) * xbsd_dlabel.d_secpercyl;
479
480 snprintf(mesg, sizeof(mesg), "Last %s or +size or +sizeM or +sizeK",
481 str_units(SINGULAR));
482 end = read_int(bsd_cround(begin), bsd_cround(end), bsd_cround(end),
483 bsd_cround(begin), mesg);
484
485 if (display_in_cyl_units)
486 end = end * xbsd_dlabel.d_secpercyl - 1;
487
488 xbsd_dlabel.d_partitions[i].p_size = end - begin + 1;
489 xbsd_dlabel.d_partitions[i].p_offset = begin;
490 xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
491}
492
493static void
494xbsd_print_disklabel(int show_all)
495{
496 struct xbsd_disklabel *lp = &xbsd_dlabel;
497 struct xbsd_partition *pp;
498 int i, j;
499
500 if (show_all) {
501 static const int d_masks[] = { BSD_D_REMOVABLE, BSD_D_ECC, BSD_D_BADSECT };
502
503#if defined(__alpha__)
504 printf("# %s:\n", disk_device);
505#else
506 printf("# %s:\n", partname(disk_device, xbsd_part_index+1, 0));
507#endif
508 if ((unsigned) lp->d_type < ARRAY_SIZE(xbsd_dktypenames)-1)
509 printf("type: %s\n", xbsd_dktypenames[lp->d_type]);
510 else
511 printf("type: %u\n", lp->d_type);
512 printf("disk: %.*s\n", (int) sizeof(lp->d_typename), lp->d_typename);
513 printf("label: %.*s\n", (int) sizeof(lp->d_packname), lp->d_packname);
514 printf("flags: ");
515 print_flags_separated(d_masks, "removable\0""ecc\0""badsect\0", lp->d_flags, " ");
516 bb_putchar('\n');
517 /* On various machines the fields of *lp are short/int/long */
518 /* In order to avoid problems, we cast them all to long. */
519 printf("bytes/sector: %lu\n", (long) lp->d_secsize);
520 printf("sectors/track: %lu\n", (long) lp->d_nsectors);
521 printf("tracks/cylinder: %lu\n", (long) lp->d_ntracks);
522 printf("sectors/cylinder: %lu\n", (long) lp->d_secpercyl);
523 printf("cylinders: %lu\n", (long) lp->d_ncylinders);
524 printf("rpm: %u\n", lp->d_rpm);
525 printf("interleave: %u\n", lp->d_interleave);
526 printf("trackskew: %u\n", lp->d_trackskew);
527 printf("cylinderskew: %u\n", lp->d_cylskew);
528 printf("headswitch: %lu\t\t# milliseconds\n",
529 (long) lp->d_headswitch);
530 printf("track-to-track seek: %lu\t# milliseconds\n",
531 (long) lp->d_trkseek);
532 printf("drivedata: ");
533 for (i = NDDATA - 1; i >= 0; i--)
534 if (lp->d_drivedata[i])
535 break;
536 if (i < 0)
537 i = 0;
538 for (j = 0; j <= i; j++)
539 printf("%lu ", (long) lp->d_drivedata[j]);
540 }
541 printf("\n%u partitions:\n", lp->d_npartitions);
542 printf("# start end size fstype [fsize bsize cpg]\n");
543 pp = lp->d_partitions;
544 for (i = 0; i < lp->d_npartitions; i++, pp++) {
545 if (pp->p_size) {
546 if (display_in_cyl_units && lp->d_secpercyl) {
547 printf(" %c: %8lu%c %8lu%c %8lu%c ",
548 'a' + i,
549 (unsigned long) pp->p_offset / lp->d_secpercyl + 1,
550 (pp->p_offset % lp->d_secpercyl) ? '*' : ' ',
551 (unsigned long) (pp->p_offset + pp->p_size + lp->d_secpercyl - 1) / lp->d_secpercyl,
552 ((pp->p_offset + pp->p_size) % lp->d_secpercyl) ? '*' : ' ',
553 (long) pp->p_size / lp->d_secpercyl,
554 (pp->p_size % lp->d_secpercyl) ? '*' : ' '
555 );
556 } else {
557 printf(" %c: %8lu %8lu %8lu ",
558 'a' + i,
559 (long) pp->p_offset,
560 (long) pp->p_offset + pp->p_size - 1,
561 (long) pp->p_size
562 );
563 }
564
565 if ((unsigned) pp->p_fstype < ARRAY_SIZE(xbsd_fstypes)-1)
566 printf("%8.8s", xbsd_fstypes[pp->p_fstype]);
567 else
568 printf("%8x", pp->p_fstype);
569
570 switch (pp->p_fstype) {
571 case BSD_FS_UNUSED:
572 printf(" %5lu %5lu %5.5s ",
573 (long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, "");
574 break;
575 case BSD_FS_BSDFFS:
576 printf(" %5lu %5lu %5u ",
577 (long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, pp->p_cpg);
578 break;
579 default:
580 printf("%22.22s", "");
581 break;
582 }
583 bb_putchar('\n');
584 }
585 }
586}
587
588static void
589xbsd_write_disklabel(void)
590{
591#if defined(__alpha__)
592 printf("Writing disklabel to %s\n", disk_device);
593 xbsd_writelabel(NULL);
594#else
595 printf("Writing disklabel to %s\n",
596 partname(disk_device, xbsd_part_index + 1, 0));
597 xbsd_writelabel(xbsd_part);
598#endif
599 reread_partition_table(0); /* no exit yet */
600}
601
602static int
603xbsd_create_disklabel(void)
604{
605 char c;
606
607#if defined(__alpha__)
608 printf("%s contains no disklabel\n", disk_device);
609#else
610 printf("%s contains no disklabel\n",
611 partname(disk_device, xbsd_part_index + 1, 0));
612#endif
613
614 while (1) {
615 c = read_nonempty("Do you want to create a disklabel? (y/n) ");
616 if ((c|0x20) == 'y') {
617 if (xbsd_initlabel(
618#if defined(__alpha__) || defined(__powerpc__) || defined(__hppa__) || \
619 defined(__s390__) || defined(__s390x__)
620 NULL
621#else
622 xbsd_part
623#endif
624 ) == 1) {
625 xbsd_print_disklabel(1);
626 return 1;
627 }
628 return 0;
629 }
630 if ((c|0x20) == 'n')
631 return 0;
632 }
633}
634
635static int
636edit_int(int def, const char *mesg)
637{
638 mesg = xasprintf("%s (%u): ", mesg, def);
639 do {
640 if (!read_line(mesg))
641 goto ret;
642 } while (!isdigit(*line_ptr));
643 def = atoi(line_ptr);
644 ret:
645 free((char*)mesg);
646 return def;
647}
648
649static void
650xbsd_edit_disklabel(void)
651{
652 struct xbsd_disklabel *d;
653
654 d = &xbsd_dlabel;
655
656#if defined(__alpha__) || defined(__ia64__)
657 d->d_secsize = edit_int(d->d_secsize , "bytes/sector");
658 d->d_nsectors = edit_int(d->d_nsectors , "sectors/track");
659 d->d_ntracks = edit_int(d->d_ntracks , "tracks/cylinder");
660 d->d_ncylinders = edit_int(d->d_ncylinders , "cylinders");
661#endif
662
663 /* d->d_secpercyl can be != d->d_nsectors * d->d_ntracks */
664 while (1) {
665 d->d_secpercyl = edit_int(d->d_nsectors * d->d_ntracks,
666 "sectors/cylinder");
667 if (d->d_secpercyl <= d->d_nsectors * d->d_ntracks)
668 break;
669
670 printf("Must be <= sectors/track * tracks/cylinder (default)\n");
671 }
672 d->d_rpm = edit_int(d->d_rpm , "rpm");
673 d->d_interleave = edit_int(d->d_interleave, "interleave");
674 d->d_trackskew = edit_int(d->d_trackskew , "trackskew");
675 d->d_cylskew = edit_int(d->d_cylskew , "cylinderskew");
676 d->d_headswitch = edit_int(d->d_headswitch, "headswitch");
677 d->d_trkseek = edit_int(d->d_trkseek , "track-to-track seek");
678
679 d->d_secperunit = d->d_secpercyl * d->d_ncylinders;
680}
681
682static int
683xbsd_get_bootstrap(char *path, void *ptr, int size)
684{
685 int fdb;
686
687 fdb = open_or_warn(path, O_RDONLY);
688 if (fdb < 0) {
689 return 0;
690 }
691 if (full_read(fdb, ptr, size) < 0) {
692 bb_simple_perror_msg(path);
693 close(fdb);
694 return 0;
695 }
696 printf(" ... %s\n", path);
697 close(fdb);
698 return 1;
699}
700
701static void
702sync_disks(void)
703{
704 printf("Syncing disks\n");
705 sync();
706 /* sleep(4); What? */
707}
708
709static void
710xbsd_write_bootstrap(void)
711{
712 char path[MAXPATHLEN];
713 const char *bootdir = BSD_LINUX_BOOTDIR;
714 const char *dkbasename;
715 struct xbsd_disklabel dl;
716 char *d, *p, *e;
717 int sector;
718
719 if (xbsd_dlabel.d_type == BSD_DTYPE_SCSI)
720 dkbasename = "sd";
721 else
722 dkbasename = "wd";
723
724 snprintf(path, sizeof(path), "Bootstrap: %sboot -> boot%s (%s): ",
725 dkbasename, dkbasename, dkbasename);
726 if (read_line(path)) {
727 dkbasename = line_ptr;
728 }
729 snprintf(path, sizeof(path), "%s/%sboot", bootdir, dkbasename);
730 if (!xbsd_get_bootstrap(path, disklabelbuffer, (int) xbsd_dlabel.d_secsize))
731 return;
732
733/* We need a backup of the disklabel (xbsd_dlabel might have changed). */
734 d = &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE];
735 memmove(&dl, d, sizeof(struct xbsd_disklabel));
736
737/* The disklabel will be overwritten by 0's from bootxx anyway */
738 memset(d, 0, sizeof(struct xbsd_disklabel));
739
740 snprintf(path, sizeof(path), "%s/boot%s", bootdir, dkbasename);
741 if (!xbsd_get_bootstrap(path, &disklabelbuffer[xbsd_dlabel.d_secsize],
742 (int) xbsd_dlabel.d_bbsize - xbsd_dlabel.d_secsize))
743 return;
744
745 e = d + sizeof(struct xbsd_disklabel);
746 for (p = d; p < e; p++)
747 if (*p) {
748 printf("Bootstrap overlaps with disk label!\n");
749 exit(EXIT_FAILURE);
750 }
751
752 memmove(d, &dl, sizeof(struct xbsd_disklabel));
753
754#if defined(__powerpc__) || defined(__hppa__)
755 sector = 0;
756#elif defined(__alpha__)
757 sector = 0;
758 alpha_bootblock_checksum(disklabelbuffer);
759#else
760 sector = get_start_sect(xbsd_part);
761#endif
762
763 seek_sector(sector);
764 xwrite(dev_fd, disklabelbuffer, BSD_BBSIZE);
765
766#if defined(__alpha__)
767 printf("Bootstrap installed on %s\n", disk_device);
768#else
769 printf("Bootstrap installed on %s\n",
770 partname(disk_device, xbsd_part_index+1, 0));
771#endif
772
773 sync_disks();
774}
775
776static void
777xbsd_change_fstype(void)
778{
779 int i;
780
781 i = xbsd_get_part_index(xbsd_dlabel.d_npartitions);
782 xbsd_dlabel.d_partitions[i].p_fstype = read_hex(xbsd_fstypes);
783}
784
785static int
786xbsd_get_part_index(int max)
787{
788 char prompt[sizeof("Partition (a-%c): ") + 16];
789 char l;
790
791 snprintf(prompt, sizeof(prompt), "Partition (a-%c): ", 'a' + max - 1);
792 do
793 l = tolower(read_nonempty(prompt));
794 while (l < 'a' || l > 'a' + max - 1);
795 return l - 'a';
796}
797
798static int
799xbsd_check_new_partition(int *i)
800{
801 /* room for more? various BSD flavours have different maxima */
802 if (xbsd_dlabel.d_npartitions == BSD_MAXPARTITIONS) {
803 int t;
804
805 for (t = 0; t < BSD_MAXPARTITIONS; t++)
806 if (xbsd_dlabel.d_partitions[t].p_size == 0)
807 break;
808
809 if (t == BSD_MAXPARTITIONS) {
810 printf("The maximum number of partitions has been created\n");
811 return 0;
812 }
813 }
814
815 *i = xbsd_get_part_index(BSD_MAXPARTITIONS);
816
817 if (*i >= xbsd_dlabel.d_npartitions)
818 xbsd_dlabel.d_npartitions = (*i) + 1;
819
820 if (xbsd_dlabel.d_partitions[*i].p_size != 0) {
821 printf("This partition already exists\n");
822 return 0;
823 }
824
825 return 1;
826}
827
828static void
829xbsd_list_types(void)
830{
831 list_types(xbsd_fstypes);
832}
833
834static uint16_t
835xbsd_dkcksum(struct xbsd_disklabel *lp)
836{
837 uint16_t *start, *end;
838 uint16_t sum = 0;
839
840 start = (uint16_t *) lp;
841 end = (uint16_t *) &lp->d_partitions[lp->d_npartitions];
842 while (start < end)
843 sum ^= *start++;
844 return sum;
845}
846
847static int
848xbsd_initlabel(struct partition *p)
849{
850 struct xbsd_disklabel *d = &xbsd_dlabel;
851 struct xbsd_partition *pp;
852
853 get_geometry();
854 memset(d, 0, sizeof(struct xbsd_disklabel));
855
856 d->d_magic = BSD_DISKMAGIC;
857
858 if (is_prefixed_with(disk_device, "/dev/sd"))
859 d->d_type = BSD_DTYPE_SCSI;
860 else
861 d->d_type = BSD_DTYPE_ST506;
862
863#if !defined(__alpha__)
864 d->d_flags = BSD_D_DOSPART;
865#else
866 d->d_flags = 0;
867#endif
868 d->d_secsize = SECTOR_SIZE; /* bytes/sector */
869 d->d_nsectors = g_sectors; /* sectors/track */
870 d->d_ntracks = g_heads; /* tracks/cylinder (heads) */
871 d->d_ncylinders = g_cylinders;
872 d->d_secpercyl = g_sectors * g_heads;/* sectors/cylinder */
873 if (d->d_secpercyl == 0)
874 d->d_secpercyl = 1; /* avoid segfaults */
875 d->d_secperunit = d->d_secpercyl * d->d_ncylinders;
876
877 d->d_rpm = 3600;
878 d->d_interleave = 1;
879 d->d_trackskew = 0;
880 d->d_cylskew = 0;
881 d->d_headswitch = 0;
882 d->d_trkseek = 0;
883
884 d->d_magic2 = BSD_DISKMAGIC;
885 d->d_bbsize = BSD_BBSIZE;
886 d->d_sbsize = BSD_SBSIZE;
887
888#if !defined(__alpha__)
889 d->d_npartitions = 4;
890 pp = &d->d_partitions[2]; /* Partition C should be NetBSD partition */
891
892 pp->p_offset = get_start_sect(p);
893 pp->p_size = get_nr_sects(p);
894 pp->p_fstype = BSD_FS_UNUSED;
895 pp = &d->d_partitions[3]; /* Partition D should be whole disk */
896
897 pp->p_offset = 0;
898 pp->p_size = d->d_secperunit;
899 pp->p_fstype = BSD_FS_UNUSED;
900#else
901 d->d_npartitions = 3;
902 pp = &d->d_partitions[2]; /* Partition C should be the whole disk */
903 pp->p_offset = 0;
904 pp->p_size = d->d_secperunit;
905 pp->p_fstype = BSD_FS_UNUSED;
906#endif
907
908 return 1;
909}
910
911/*
912 * Read a xbsd_disklabel from sector 0 or from the starting sector of p.
913 * If it has the right magic, return 1.
914 */
915static int
916xbsd_readlabel(struct partition *p)
917{
918 struct xbsd_disklabel *d;
919 int t, sector;
920
921 if (!bsd_globals_ptr)
922 bsd_globals_ptr = xzalloc(sizeof(*bsd_globals_ptr));
923
924 d = &xbsd_dlabel;
925
926 /* p is used only to get the starting sector */
927#if !defined(__alpha__)
928 sector = (p ? get_start_sect(p) : 0);
929#else
930 sector = 0;
931#endif
932
933 seek_sector(sector);
934 if (BSD_BBSIZE != full_read(dev_fd, disklabelbuffer, BSD_BBSIZE))
935 fdisk_fatal(unable_to_read);
936
937 memmove(d, &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
938 sizeof(struct xbsd_disklabel));
939
940 if (d->d_magic != BSD_DISKMAGIC || d->d_magic2 != BSD_DISKMAGIC)
941 return 0;
942
943 for (t = d->d_npartitions; t < BSD_MAXPARTITIONS; t++) {
944 d->d_partitions[t].p_size = 0;
945 d->d_partitions[t].p_offset = 0;
946 d->d_partitions[t].p_fstype = BSD_FS_UNUSED;
947 }
948
949 if (d->d_npartitions > BSD_MAXPARTITIONS)
950 printf("Warning: too many partitions (%u, maximum is %u)\n",
951 d->d_npartitions, BSD_MAXPARTITIONS);
952 return 1;
953}
954
955static int
956xbsd_writelabel(struct partition *p)
957{
958 struct xbsd_disklabel *d = &xbsd_dlabel;
959 unsigned int sector;
960
961#if !defined(__alpha__) && !defined(__powerpc__) && !defined(__hppa__)
962 sector = get_start_sect(p) + BSD_LABELSECTOR;
963#else
964 (void)p; /* silence warning */
965 sector = BSD_LABELSECTOR;
966#endif
967
968 d->d_checksum = 0;
969 d->d_checksum = xbsd_dkcksum(d);
970
971 /* This is necessary if we want to write the bootstrap later,
972 otherwise we'd write the old disklabel with the bootstrap.
973 */
974 memmove(&disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
975 d, sizeof(struct xbsd_disklabel));
976
977#if defined(__alpha__) && BSD_LABELSECTOR == 0
978 alpha_bootblock_checksum(disklabelbuffer);
979 seek_sector(0);
980 xwrite(dev_fd, disklabelbuffer, BSD_BBSIZE);
981#else
982 seek_sector(sector);
983 lseek(dev_fd, BSD_LABELOFFSET, SEEK_CUR);
984 xwrite(dev_fd, d, sizeof(*d));
985#endif
986 sync_disks();
987 return 1;
988}
989
990
991#if !defined(__alpha__)
992static int
993xbsd_translate_fstype(int linux_type)
994{
995 switch (linux_type) {
996 case 0x01: /* DOS 12-bit FAT */
997 case 0x04: /* DOS 16-bit <32M */
998 case 0x06: /* DOS 16-bit >=32M */
999 case 0xe1: /* DOS access */
1000 case 0xe3: /* DOS R/O */
1001 case 0xf2: /* DOS secondary */
1002 return BSD_FS_MSDOS;
1003 case 0x07: /* OS/2 HPFS */
1004 return BSD_FS_HPFS;
1005 default:
1006 return BSD_FS_OTHER;
1007 }
1008}
1009
1010static void
1011xbsd_link_part(void)
1012{
1013 int k, i;
1014 struct partition *p;
1015
1016 k = get_partition(1, g_partitions);
1017
1018 if (!xbsd_check_new_partition(&i))
1019 return;
1020
1021 p = get_part_table(k);
1022
1023 xbsd_dlabel.d_partitions[i].p_size = get_nr_sects(p);
1024 xbsd_dlabel.d_partitions[i].p_offset = get_start_sect(p);
1025 xbsd_dlabel.d_partitions[i].p_fstype = xbsd_translate_fstype(p->sys_ind);
1026}
1027#endif
1028
1029#if defined(__alpha__)
1030static void
1031alpha_bootblock_checksum(char *boot)
1032{
1033 uint64_t *dp, sum;
1034 int i;
1035
1036 dp = (uint64_t *)boot;
1037 sum = 0;
1038 for (i = 0; i < 63; i++)
1039 sum += dp[i];
1040 dp[63] = sum;
1041}
1042#endif /* __alpha__ */
1043
1044/* Undefine 'global' tricks */
1045#undef disklabelbuffer
1046#undef xbsd_dlabel
1047
1048#endif /* OSF_LABEL */
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