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cmd-inet/usr.sbin: remove -Wno-implicit-function-declaration
[unleashed.git] / usr / src / cmd / format / menu_fdisk.c
bloba491c0d0d705dc85b363bbc04ff65385b6f1aa7d
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2016 Toomas Soome <tsoome@me.com>
24 */
25
26 /*
27 * This file contains functions that implement the fdisk menu commands.
28 */
29 #include "global.h"
30 #include <errno.h>
31 #include <sys/time.h>
32 #include <sys/resource.h>
33 #include <sys/wait.h>
34 #include <signal.h>
35 #include <string.h>
36 #include <fcntl.h>
37 #include <stdlib.h>
38 #include <sys/dktp/fdisk.h>
39 #include <sys/stat.h>
40 #include <sys/dklabel.h>
41 #ifdef i386
42 #include <libfdisk.h>
43 #endif
44
45 #include "main.h"
46 #include "analyze.h"
47 #include "menu.h"
48 #include "menu_command.h"
49 #include "menu_defect.h"
50 #include "menu_partition.h"
51 #include "menu_fdisk.h"
52 #include "param.h"
53 #include "misc.h"
54 #include "label.h"
55 #include "startup.h"
56 #include "partition.h"
57 #include "prompts.h"
58 #include "checkdev.h"
59 #include "io.h"
60 #include "ctlr_scsi.h"
61 #include "auto_sense.h"
62
63 extern struct menu_item menu_fdisk[];
64
65 /*
66 * Byte swapping macros for accessing struct ipart
67 * to resolve little endian on Sparc.
68 */
69 #if defined(sparc)
70 #define les(val) ((((val)&0xFF)<<8)|(((val)>>8)&0xFF))
71 #define lel(val) (((unsigned)(les((val)&0x0000FFFF))<<16) | \
72 (les((unsigned)((val)&0xffff0000)>>16)))
73
74 #elif defined(i386)
75
76 #define les(val) (val)
77 #define lel(val) (val)
78
79 #else /* defined(sparc) */
80
81 #error No Platform defined
82
83 #endif /* defined(sparc) */
84
85
86 /* Function prototypes */
87 #ifdef __STDC__
88
89 #if defined(sparc)
90
91 static int getbyte(uchar_t **);
92 static int getlong(uchar_t **);
93
94 #endif /* defined(sparc) */
95
96 static int get_solaris_part(int fd, struct ipart *ipart);
97
98 #else /* __STDC__ */
99
100 #if defined(sparc)
101
102 static int getbyte();
103 static int getlong();
104
105 #endif /* defined(sparc) */
106
107 static int get_solaris_part();
108
109 #endif /* __STDC__ */
110
111 #ifdef i386
112 int extpart_init(ext_part_t **epp);
113 #endif
114 /*
115 * Handling the alignment problem of struct ipart.
116 */
117 static void
118 fill_ipart(char *bootptr, struct ipart *partp)
119 {
120 #if defined(sparc)
121 /*
122 * Sparc platform:
123 *
124 * Packing short/word for struct ipart to resolve
125 * little endian on Sparc since it is not
126 * properly aligned on Sparc.
127 */
128 partp->bootid = getbyte((uchar_t **)&bootptr);
129 partp->beghead = getbyte((uchar_t **)&bootptr);
130 partp->begsect = getbyte((uchar_t **)&bootptr);
131 partp->begcyl = getbyte((uchar_t **)&bootptr);
132 partp->systid = getbyte((uchar_t **)&bootptr);
133 partp->endhead = getbyte((uchar_t **)&bootptr);
134 partp->endsect = getbyte((uchar_t **)&bootptr);
135 partp->endcyl = getbyte((uchar_t **)&bootptr);
136 partp->relsect = getlong((uchar_t **)&bootptr);
137 partp->numsect = getlong((uchar_t **)&bootptr);
138 #elif defined(i386)
139 /*
140 * i386 platform:
141 *
142 * The fdisk table does not begin on a 4-byte boundary within
143 * the master boot record; so, we need to recopy its contents
144 * to another data structure to avoid an alignment exception.
145 */
146 (void) bcopy(bootptr, partp, sizeof (struct ipart));
147 #else
148 #error No Platform defined
149 #endif /* defined(sparc) */
150 }
151
152 /*
153 * Get a correct byte/short/word routines for Sparc platform.
154 */
155 #if defined(sparc)
156 static int
157 getbyte(uchar_t **bp)
158 {
159 int b;
160
161 b = **bp;
162 *bp = *bp + 1;
163 return (b);
164 }
165
166 #ifdef DEADCODE
167 static int
168 getshort(uchar_t **bp)
169 {
170 int b;
171
172 b = ((**bp) << 8) | *(*bp + 1);
173 *bp += 2;
174 return (b);
175 }
176 #endif /* DEADCODE */
177
178 static int
179 getlong(uchar_t **bp)
180 {
181 int b, bh, bl;
182
183 bh = ((**bp) << 8) | *(*bp + 1);
184 *bp += 2;
185 bl = ((**bp) << 8) | *(*bp + 1);
186 *bp += 2;
187
188 b = (bh << 16) | bl;
189 return (b);
190 }
191 #endif /* defined(sparc) */
192
193 #ifdef i386
194 /*
195 * Convert emcpowerN[a-p,p0,p1,p2,p3,p4] to emcpowerNp0 path,
196 * this is specific for emc powerpath driver.
197 */
198 static void
199 get_emcpower_pname(char *name, char *devname)
200 {
201 char *emcp = "emcpower";
202 char *npt = NULL;
203 char np[MAXNAMELEN];
204 int i = strlen(emcp);
205
206 (void) strcpy(np, devname);
207 npt = strstr(np, emcp);
208 while ((i < strlen(npt)) && (isdigit(npt[i])))
209 i++;
210 npt[i] = '\0';
211 (void) snprintf(name, MAXNAMELEN, "/dev/rdsk/%sp0", npt);
212 }
213 #endif
214
215 /*
216 * Convert cn[tn]dn to cn[tn]dns2 path
217 */
218 static void
219 get_sname(char *name)
220 {
221 char buf[MAXPATHLEN];
222 char *devp = "/dev/dsk";
223 char *rdevp = "/dev/rdsk";
224 char np[MAXNAMELEN];
225 char *npt;
226
227 #ifdef i386
228 if (emcpower_name(cur_disk->disk_name)) {
229 get_emcpower_pname(name, cur_disk->disk_name);
230 return;
231 }
232 #endif
233
234 /*
235 * If it is a full path /dev/[r]dsk/cn[tn]dn, use this path
236 */
237 (void) strcpy(np, cur_disk->disk_name);
238 if (strncmp(rdevp, cur_disk->disk_name, strlen(rdevp)) == 0 ||
239 strncmp(devp, cur_disk->disk_name, strlen(devp)) == 0) {
240 /*
241 * Skip if the path is already included with sN
242 */
243 if (strchr(np, 's') == strrchr(np, 's')) {
244 npt = strrchr(np, 'p');
245 /* If pN is found, do not include it */
246 if (npt != NULL) {
247 *npt = '\0';
248 }
249 (void) snprintf(buf, sizeof (buf), "%ss2", np);
250 } else {
251 (void) snprintf(buf, sizeof (buf), "%s", np);
252 }
253 } else {
254 (void) snprintf(buf, sizeof (buf), "/dev/rdsk/%ss2", np);
255 }
256 (void) strcpy(name, buf);
257 }
258
259 /*
260 * Convert cn[tn]dnsn to cn[tn]dnp0 path
261 */
262 static void
263 get_pname(char *name)
264 {
265 char buf[MAXPATHLEN];
266 char *devp = "/dev/dsk";
267 char *rdevp = "/dev/rdsk";
268 char np[MAXNAMELEN];
269 char *npt;
270
271 /*
272 * If it is a full path /dev/[r]dsk/cn[tn]dnsn, use this path
273 */
274 if (cur_disk == NULL) {
275 (void) strcpy(np, x86_devname);
276 } else {
277 (void) strcpy(np, cur_disk->disk_name);
278 }
279
280 #ifdef i386
281 if (emcpower_name(np)) {
282 get_emcpower_pname(name, np);
283 return;
284 }
285 #endif
286
287 if (strncmp(rdevp, np, strlen(rdevp)) == 0 ||
288 strncmp(devp, np, strlen(devp)) == 0) {
289 /*
290 * Skip if the path is already included with pN
291 */
292 if (strchr(np, 'p') == NULL) {
293 npt = strrchr(np, 's');
294 /* If sN is found, do not include it */
295 if (isdigit(*++npt)) {
296 *--npt = '\0';
297 }
298 (void) snprintf(buf, sizeof (buf), "%sp0", np);
299 } else {
300 (void) snprintf(buf, sizeof (buf), "%s", np);
301 }
302 } else {
303 (void) snprintf(buf, sizeof (buf), "/dev/rdsk/%sp0", np);
304 }
305 (void) strcpy(name, buf);
306 }
307
308 /*
309 * Open file descriptor for current disk (cur_file)
310 * with "p0" path or cur_disk->disk_path
311 */
312 void
313 open_cur_file(int mode)
314 {
315 char *dkpath;
316 char pbuf[MAXPATHLEN];
317
318 switch (mode) {
319 case FD_USE_P0_PATH:
320 (void) get_pname(&pbuf[0]);
321 dkpath = pbuf;
322 break;
323 case FD_USE_CUR_DISK_PATH:
324 if (cur_disk->fdisk_part.systid == SUNIXOS ||
325 cur_disk->fdisk_part.systid == SUNIXOS2) {
326 (void) get_sname(&pbuf[0]);
327 dkpath = pbuf;
328 } else {
329 dkpath = cur_disk->disk_path;
330 }
331 break;
332 default:
333 err_print("Error: Invalid mode option for opening "
334 "cur_file\n");
335 fullabort();
336 }
337
338 /* Close previous cur_file */
339 (void) close(cur_file);
340 /* Open cur_file with the required path dkpath */
341 if ((cur_file = open_disk(dkpath, O_RDWR | O_NDELAY)) < 0) {
342 err_print(
343 "Error: can't open selected disk '%s'.\n", dkpath);
344 fullabort();
345 }
346 }
347
348
349 /*
350 * This routine implements the 'fdisk' command. It simply runs
351 * the fdisk command on the current disk.
352 * Use of this is restricted to interactive mode only.
353 */
354 int
355 c_fdisk()
356 {
357
358 char buf[MAXPATHLEN];
359 char pbuf[MAXPATHLEN];
360 struct stat statbuf;
361
362 /*
363 * We must be in interactive mode to use the fdisk command
364 */
365 if (option_f != NULL || isatty(0) != 1 || isatty(1) != 1) {
366 err_print("Fdisk command is for interactive use only!\n");
367 return (-1);
368 }
369
370 /*
371 * There must be a current disk type and a current disk
372 */
373 if (cur_dtype == NULL) {
374 err_print("Current Disk Type is not set.\n");
375 return (-1);
376 }
377
378 /*
379 * Before running the fdisk command, get file status of
380 * /dev/rdsk/cn[tn]dnp0 path to see if this disk
381 * supports fixed disk partition table.
382 */
383 (void) get_pname(&pbuf[0]);
384 if (stat(pbuf, (struct stat *)&statbuf) == -1 ||
385 !S_ISCHR(statbuf.st_mode)) {
386 err_print(
387 "Disk does not support fixed disk partition table\n");
388 return (0);
389 }
390
391 /*
392 * Run the fdisk program.
393 */
394 (void) snprintf(buf, sizeof (buf), "fdisk %s\n", pbuf);
395 (void) system(buf);
396
397 /*
398 * Open cur_file with "p0" path for accessing the fdisk table
399 */
400 (void) open_cur_file(FD_USE_P0_PATH);
401
402 /*
403 * Get solaris partition information in the fdisk partition table
404 */
405 if (get_solaris_part(cur_file, &cur_disk->fdisk_part) == -1) {
406 err_print("No fdisk solaris partition found\n");
407 cur_disk->fdisk_part.numsect = 0; /* No Solaris */
408 }
409
410 /*
411 * Restore cur_file with cur_disk->disk_path
412 */
413 (void) open_cur_file(FD_USE_CUR_DISK_PATH);
414
415 return (0);
416 }
417
418 /*
419 * Read MBR on the disk
420 * if the Solaris partition has changed,
421 * reread the vtoc
422 */
423 #ifdef DEADCODE
424 static void
425 update_cur_parts()
426 {
427
428 int i;
429 register struct partition_info *parts;
430
431 for (i = 0; i < NDKMAP; i++) {
432 #if defined(_SUNOS_VTOC_16)
433 if (cur_parts->vtoc.v_part[i].p_tag &&
434 cur_parts->vtoc.v_part[i].p_tag != V_ALTSCTR) {
435 cur_parts->vtoc.v_part[i].p_start = 0;
436 cur_parts->vtoc.v_part[i].p_size = 0;
437
438 #endif
439 cur_parts->pinfo_map[i].dkl_nblk = 0;
440 cur_parts->pinfo_map[i].dkl_cylno = 0;
441 cur_parts->vtoc.v_part[i].p_tag =
442 default_vtoc_map[i].p_tag;
443 cur_parts->vtoc.v_part[i].p_flag =
444 default_vtoc_map[i].p_flag;
445 #if defined(_SUNOS_VTOC_16)
446 }
447 #endif
448 }
449 cur_parts->pinfo_map[C_PARTITION].dkl_nblk = ncyl * spc();
450
451 #if defined(_SUNOS_VTOC_16)
452 /*
453 * Adjust for the boot partitions
454 */
455 cur_parts->pinfo_map[I_PARTITION].dkl_nblk = spc();
456 cur_parts->pinfo_map[I_PARTITION].dkl_cylno = 0;
457 cur_parts->vtoc.v_part[C_PARTITION].p_start =
458 cur_parts->pinfo_map[C_PARTITION].dkl_cylno * nhead * nsect;
459 cur_parts->vtoc.v_part[C_PARTITION].p_size =
460 cur_parts->pinfo_map[C_PARTITION].dkl_nblk;
461
462 cur_parts->vtoc.v_part[I_PARTITION].p_start =
463 cur_parts->pinfo_map[I_PARTITION].dkl_cylno;
464 cur_parts->vtoc.v_part[I_PARTITION].p_size =
465 cur_parts->pinfo_map[I_PARTITION].dkl_nblk;
466
467 #endif /* defined(_SUNOS_VTOC_16) */
468 parts = cur_dtype->dtype_plist;
469 cur_dtype->dtype_ncyl = ncyl;
470 cur_dtype->dtype_plist = cur_parts;
471 parts->pinfo_name = cur_parts->pinfo_name;
472 cur_disk->disk_parts = cur_parts;
473 cur_ctype->ctype_dlist = cur_dtype;
474
475 }
476 #endif /* DEADCODE */
477
478 static int
479 get_solaris_part(int fd, struct ipart *ipart)
480 {
481 int i;
482 struct ipart ip;
483 int status;
484 char *mbr;
485 char *bootptr;
486 struct dk_label update_label;
487 ushort_t found = 0;
488 #ifdef i386
489 uint32_t relsec, numsec;
490 int pno, rval, ext_part_found = 0;
491 ext_part_t *epp;
492 #endif
493
494 (void) lseek(fd, 0, 0);
495
496 /*
497 * We may get mbr of different size, but the first 512 bytes
498 * are valid information.
499 */
500 mbr = malloc(cur_blksz);
501 if (mbr == NULL) {
502 err_print("No memory available.\n");
503 return (-1);
504 }
505 status = read(fd, mbr, cur_blksz);
506
507 if (status != cur_blksz) {
508 err_print("Bad read of fdisk partition. Status = %x\n", status);
509 err_print("Cannot read fdisk partition information.\n");
510 free(mbr);
511 return (-1);
512 }
513
514 (void) memcpy(&boot_sec, mbr, sizeof (struct mboot));
515 free(mbr);
516
517 #ifdef i386
518 (void) extpart_init(&epp);
519 #endif
520 for (i = 0; i < FD_NUMPART; i++) {
521 int ipc;
522
523 ipc = i * sizeof (struct ipart);
524
525 /* Handling the alignment problem of struct ipart */
526 bootptr = &boot_sec.parts[ipc];
527 (void) fill_ipart(bootptr, &ip);
528
529 #ifdef i386
530 if (fdisk_is_dos_extended(ip.systid) && (ext_part_found == 0)) {
531 /* We support only one extended partition per disk */
532 ext_part_found = 1;
533 rval = fdisk_get_solaris_part(epp, &pno, &relsec,
534 &numsec);
535 if (rval == FDISK_SUCCESS) {
536 /*
537 * Found a solaris partition inside the
538 * extended partition. Update the statistics.
539 */
540 if (nhead != 0 && nsect != 0) {
541 pcyl = numsec / (nhead * nsect);
542 xstart = relsec / (nhead * nsect);
543 ncyl = pcyl - acyl;
544 }
545 solaris_offset = relsec;
546 found = 2;
547 ip.bootid = 0;
548 ip.beghead = ip.begsect = ip.begcyl = 0xff;
549 ip.endhead = ip.endsect = ip.endcyl = 0xff;
550 ip.systid = SUNIXOS2;
551 ip.relsect = relsec;
552 ip.numsect = numsec;
553 ipart->bootid = ip.bootid;
554 status = bcmp(&ip, ipart,
555 sizeof (struct ipart));
556 bcopy(&ip, ipart, sizeof (struct ipart));
557 }
558 continue;
559 }
560 #endif
561
562 /*
563 * we are interested in Solaris and EFI partition types
564 */
565 #ifdef i386
566 if ((ip.systid == SUNIXOS &&
567 (fdisk_is_linux_swap(epp, lel(ip.relsect), NULL) != 0)) ||
568 ip.systid == SUNIXOS2 ||
569 ip.systid == EFI_PMBR) {
570 #else
571 if (ip.systid == SUNIXOS ||
572 ip.systid == SUNIXOS2 ||
573 ip.systid == EFI_PMBR) {
574 #endif
575 /*
576 * if the disk has an EFI label, nhead and nsect may
577 * be zero. This test protects us from FPE's, and
578 * format still seems to work fine
579 */
580 if (nhead != 0 && nsect != 0) {
581 pcyl = lel(ip.numsect) / (nhead * nsect);
582 xstart = lel(ip.relsect) / (nhead * nsect);
583 ncyl = pcyl - acyl;
584 }
585 #ifdef DEBUG
586 else {
587 err_print("Critical geometry values are zero:\n"
588 "\tnhead = %d; nsect = %d\n", nhead, nsect);
589 }
590 #endif /* DEBUG */
591
592 solaris_offset = (uint_t)lel(ip.relsect);
593 found = 1;
594 break;
595 }
596 }
597
598 #ifdef i386
599 libfdisk_fini(&epp);
600 #endif
601
602 if (!found) {
603 err_print("Solaris fdisk partition not found\n");
604 return (-1);
605 } else if (found == 1) {
606 /*
607 * Found a primary solaris partition.
608 * compare the previous and current Solaris partition
609 * but don't use bootid in determination of Solaris partition
610 * changes
611 */
612 ipart->bootid = ip.bootid;
613 status = bcmp(&ip, ipart, sizeof (struct ipart));
614
615 bcopy(&ip, ipart, sizeof (struct ipart));
616 }
617
618 /* if the disk partitioning has changed - get the VTOC */
619 if (status) {
620 struct extvtoc exvtoc;
621 struct vtoc vtoc;
622
623 status = ioctl(fd, DKIOCGEXTVTOC, &exvtoc);
624 if (status == -1) {
625 i = errno;
626 /* Try the old ioctl DKIOCGVTOC */
627 status = ioctl(fd, DKIOCGVTOC, &vtoc);
628 if (status == -1) {
629 err_print("Bad ioctl DKIOCGEXTVTOC.\n");
630 err_print("errno=%d %s\n", i, strerror(i));
631 err_print("Cannot read vtoc information.\n");
632 return (-1);
633 }
634 }
635
636 status = read_label(fd, &update_label);
637 if (status == -1) {
638 err_print("Cannot read label information.\n");
639 return (-1);
640 }
641
642 /* copy vtoc information */
643 cur_parts->vtoc = update_label.dkl_vtoc;
644
645 #if defined(_SUNOS_VTOC_16)
646 /*
647 * this is to update the slice table on x86
648 * we don't care about VTOC8 here
649 */
650 for (i = 0; i < NDKMAP; i ++) {
651 cur_parts->pinfo_map[i].dkl_cylno =
652 update_label.dkl_vtoc.v_part[i].p_start /
653 ((int)(update_label.dkl_nhead *
654 update_label.dkl_nsect));
655 cur_parts->pinfo_map[i].dkl_nblk =
656 update_label.dkl_vtoc.v_part[i].p_size;
657 }
658 #endif /* defined(_SUNOS_VTOC_16) */
659
660 cur_dtype->dtype_ncyl = update_label.dkl_ncyl;
661 cur_dtype->dtype_pcyl = update_label.dkl_pcyl;
662 cur_dtype->dtype_acyl = update_label.dkl_acyl;
663 cur_dtype->dtype_nhead = update_label.dkl_nhead;
664 cur_dtype->dtype_nsect = update_label.dkl_nsect;
665 ncyl = cur_dtype->dtype_ncyl;
666 acyl = cur_dtype->dtype_acyl;
667 pcyl = cur_dtype->dtype_pcyl;
668 nsect = cur_dtype->dtype_nsect;
669 nhead = cur_dtype->dtype_nhead;
670 }
671 return (0);
672 }
673
674
675 int
676 copy_solaris_part(struct ipart *ipart)
677 {
678
679 int status, i, fd;
680 struct mboot mboot;
681 char *mbr;
682 struct ipart ip;
683 char buf[MAXPATHLEN];
684 char *bootptr;
685 struct stat statbuf;
686 #ifdef i386
687 uint32_t relsec, numsec;
688 int pno, rval, ext_part_found = 0;
689 ext_part_t *epp;
690 #endif
691
692 (void) get_pname(&buf[0]);
693 if (stat(buf, &statbuf) == -1 ||
694 !S_ISCHR(statbuf.st_mode) ||
695 ((cur_label == L_TYPE_EFI) &&
696 (cur_disk->disk_flags & DSK_LABEL_DIRTY))) {
697 /*
698 * Make sure to reset solaris_offset to zero if it is
699 * previously set by a selected disk that
700 * supports the fdisk table.
701 */
702 solaris_offset = 0;
703 /*
704 * Return if this disk does not support fdisk table or
705 * if it uses an EFI label but has not yet been labelled.
706 * If the EFI label has not been written then the open
707 * on the partition will fail.
708 */
709 return (0);
710 }
711
712 if ((fd = open(buf, O_RDONLY)) < 0) {
713 /*
714 * Labeled device support in lofi provides p0 partition on
715 * both x86 and sparc. However, sparc does not implement fdisk
716 * partitioning. This workaround will allow format
717 * to ignore fdisk errors in case of lofi devices.
718 */
719 if (strcmp(cur_disk->disk_dkinfo.dki_cname, "lofi") == 0) {
720 solaris_offset = 0;
721 return (0);
722 }
723 err_print("Error: can't open disk '%s'.\n", buf);
724 return (-1);
725 }
726
727 /*
728 * We may get mbr of different size, but the first 512 bytes
729 * are valid information.
730 */
731 mbr = malloc(cur_blksz);
732 if (mbr == NULL) {
733 err_print("No memory available.\n");
734 return (-1);
735 }
736 status = read(fd, mbr, cur_blksz);
737
738 if (status != cur_blksz) {
739 err_print("Bad read of fdisk partition.\n");
740 (void) close(fd);
741 free(mbr);
742 return (-1);
743 }
744
745 (void) memcpy(&mboot, mbr, sizeof (struct mboot));
746
747 #ifdef i386
748 (void) extpart_init(&epp);
749 #endif
750 for (i = 0; i < FD_NUMPART; i++) {
751 int ipc;
752
753 ipc = i * sizeof (struct ipart);
754
755 /* Handling the alignment problem of struct ipart */
756 bootptr = &mboot.parts[ipc];
757 (void) fill_ipart(bootptr, &ip);
758
759 #ifdef i386
760 if (fdisk_is_dos_extended(ip.systid) && (ext_part_found == 0)) {
761 /* We support only one extended partition per disk */
762 ext_part_found = 1;
763 rval = fdisk_get_solaris_part(epp, &pno, &relsec,
764 &numsec);
765 if (rval == FDISK_SUCCESS) {
766 /*
767 * Found a solaris partition inside the
768 * extended partition. Update the statistics.
769 */
770 if (nhead != 0 && nsect != 0) {
771 pcyl = numsec / (nhead * nsect);
772 ncyl = pcyl - acyl;
773 }
774 solaris_offset = relsec;
775 ip.bootid = 0;
776 ip.beghead = ip.begsect = ip.begcyl = 0xff;
777 ip.endhead = ip.endsect = ip.endcyl = 0xff;
778 ip.systid = SUNIXOS2;
779 ip.relsect = relsec;
780 ip.numsect = numsec;
781 bcopy(&ip, ipart, sizeof (struct ipart));
782 }
783 continue;
784 }
785 #endif
786
787
788 #ifdef i386
789 if ((ip.systid == SUNIXOS &&
790 (fdisk_is_linux_swap(epp, lel(ip.relsect), NULL) != 0)) ||
791 ip.systid == SUNIXOS2 ||
792 ip.systid == EFI_PMBR) {
793 #else
794 if (ip.systid == SUNIXOS ||
795 ip.systid == SUNIXOS2 ||
796 ip.systid == EFI_PMBR) {
797 #endif
798 solaris_offset = lel(ip.relsect);
799 bcopy(&ip, ipart, sizeof (struct ipart));
800
801 /*
802 * if the disk has an EFI label, we typically won't
803 * have values for nhead and nsect. format seems to
804 * work without them, and we need to protect ourselves
805 * from FPE's
806 */
807 if (nhead != 0 && nsect != 0) {
808 pcyl = lel(ip.numsect) / (nhead * nsect);
809 ncyl = pcyl - acyl;
810 }
811 #ifdef DEBUG
812 else {
813 err_print("Critical geometry values are zero:\n"
814 "\tnhead = %d; nsect = %d\n", nhead, nsect);
815 }
816 #endif /* DEBUG */
817
818 break;
819 }
820 }
821 #ifdef i386
822 libfdisk_fini(&epp);
823 #endif
824
825 (void) close(fd);
826 free(mbr);
827 return (0);
828 }
829
830 #if defined(_FIRMWARE_NEEDS_FDISK)
831 int
832 auto_solaris_part(struct dk_label *label)
833 {
834
835 int status, i, fd;
836 struct mboot mboot;
837 char *mbr;
838 struct ipart ip;
839 char *bootptr;
840 char pbuf[MAXPATHLEN];
841 #ifdef i386
842 uint32_t relsec, numsec;
843 int pno, rval, ext_part_found = 0;
844 ext_part_t *epp;
845 #endif
846
847 (void) get_pname(&pbuf[0]);
848 if ((fd = open_disk(pbuf, O_RDONLY)) < 0) {
849 err_print("Error: can't open selected disk '%s'.\n", pbuf);
850 return (-1);
851 }
852
853 /*
854 * We may get mbr of different size, but the first 512 bytes
855 * are valid information.
856 */
857 mbr = malloc(cur_blksz);
858 if (mbr == NULL) {
859 err_print("No memory available.\n");
860 return (-1);
861 }
862 status = read(fd, mbr, cur_blksz);
863
864 if (status != cur_blksz) {
865 err_print("Bad read of fdisk partition.\n");
866 free(mbr);
867 return (-1);
868 }
869
870 (void) memcpy(&mboot, mbr, sizeof (struct mboot));
871
872 #ifdef i386
873 (void) extpart_init(&epp);
874 #endif
875 for (i = 0; i < FD_NUMPART; i++) {
876 int ipc;
877
878 ipc = i * sizeof (struct ipart);
879
880 /* Handling the alignment problem of struct ipart */
881 bootptr = &mboot.parts[ipc];
882 (void) fill_ipart(bootptr, &ip);
883
884 #ifdef i386
885 if (fdisk_is_dos_extended(ip.systid) && (ext_part_found == 0)) {
886 /* We support only one extended partition per disk */
887 ext_part_found = 1;
888 rval = fdisk_get_solaris_part(epp, &pno, &relsec,
889 &numsec);
890 if (rval == FDISK_SUCCESS) {
891 /*
892 * Found a solaris partition inside the
893 * extended partition. Update the statistics.
894 */
895 if ((label->dkl_nhead != 0) &&
896 (label->dkl_nsect != 0)) {
897 label->dkl_pcyl =
898 numsec / (label->dkl_nhead *
899 label->dkl_nsect);
900 label->dkl_ncyl = label->dkl_pcyl -
901 label->dkl_acyl;
902 }
903 solaris_offset = relsec;
904 }
905 continue;
906 }
907 #endif
908
909 /*
910 * if the disk has an EFI label, the nhead and nsect fields
911 * the label may be zero. This protects us from FPE's, and
912 * format still seems to work happily
913 */
914
915
916 #ifdef i386
917 if ((ip.systid == SUNIXOS &&
918 (fdisk_is_linux_swap(epp, lel(ip.relsect), NULL) != 0)) ||
919 ip.systid == SUNIXOS2 ||
920 ip.systid == EFI_PMBR) {
921 #else
922 if (ip.systid == SUNIXOS ||
923 ip.systid == SUNIXOS2 ||
924 ip.systid == EFI_PMBR) {
925 #endif
926 if ((label->dkl_nhead != 0) &&
927 (label->dkl_nsect != 0)) {
928 label->dkl_pcyl = lel(ip.numsect) /
929 (label->dkl_nhead * label->dkl_nsect);
930 label->dkl_ncyl = label->dkl_pcyl -
931 label->dkl_acyl;
932 }
933 #ifdef DEBUG
934 else {
935 err_print("Critical label fields aren't "
936 "non-zero:\n"
937 "\tlabel->dkl_nhead = %d; "
938 "label->dkl_nsect = "
939 "%d\n", label->dkl_nhead,
940 label->dkl_nsect);
941 }
942 #endif /* DEBUG */
943
944 solaris_offset = lel(ip.relsect);
945 break;
946 }
947 }
948
949 #ifdef i386
950 libfdisk_fini(&epp);
951 #endif
952 (void) close(fd);
953 free(mbr);
954 return (0);
955 }
956 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
957
958
959 int
960 good_fdisk()
961 {
962 char buf[MAXPATHLEN];
963 struct stat statbuf;
964
965 (void) get_pname(&buf[0]);
966 if (stat(buf, &statbuf) == -1 ||
967 !S_ISCHR(statbuf.st_mode) ||
968 cur_label == L_TYPE_EFI) {
969 /*
970 * Return if this disk does not support fdisk table or
971 * if the disk is labeled with EFI.
972 */
973 return (1);
974 }
975
976 if (lel(cur_disk->fdisk_part.numsect) > 0) {
977 return (1);
978 } else {
979 /*
980 * Labeled device support in lofi provides p0 partition on
981 * both x86 and sparc. However, sparc does not implement fdisk
982 * partitioning. This workaround will allow format
983 * to ignore fdisk errors in case of lofi devices.
984 */
985 if (strcmp(cur_disk->disk_dkinfo.dki_cname, "lofi") == 0) {
986 return (1);
987 }
988 err_print("WARNING - ");
989 err_print("This disk may be in use by an application "
990 "that has\n\t modified the fdisk table. Ensure "
991 "that this disk is\n\t not currently in use "
992 "before proceeding to use fdisk.\n");
993 return (0);
994 }
995 }
996
997 #ifdef i386
998 int
999 extpart_init(ext_part_t **epp)
1000 {
1001 int rval, lf_op_flag = 0;
1002 char p0_path[MAXPATHLEN];
1003
1004 get_pname(&p0_path[0]);
1005 lf_op_flag |= FDISK_READ_DISK;
1006 if ((rval = libfdisk_init(epp, p0_path, NULL, lf_op_flag)) !=
1007 FDISK_SUCCESS) {
1008 switch (rval) {
1009 /*
1010 * FDISK_EBADLOGDRIVE, FDISK_ENOLOGDRIVE
1011 * and FDISK_EBADMAGIC can be considered
1012 * as soft errors and hence we do not exit.
1013 */
1014 case FDISK_EBADLOGDRIVE:
1015 break;
1016 case FDISK_ENOLOGDRIVE:
1017 break;
1018 case FDISK_EBADMAGIC:
1019 break;
1020 case FDISK_ENOVGEOM:
1021 err_print("Could not get virtual geometry for"
1022 " this device\n");
1023 fullabort();
1024 break;
1025 case FDISK_ENOPGEOM:
1026 err_print("Could not get physical geometry for"
1027 " this device\n");
1028 fullabort();
1029 break;
1030 case FDISK_ENOLGEOM:
1031 err_print("Could not get label geometry for "
1032 " this device\n");
1033 fullabort();
1034 break;
1035 default:
1036 err_print("Failed to initialise libfdisk.\n");
1037 fullabort();
1038 break;
1039 }
1040 }
1041 return (0);
1042 }
1043 #endif
Unleashed OS