Let the allocation of registers be done by compilers nowadays. The average
[dragonfly.git] / sbin / newfs / newfs.c
CommitLineData
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1/*
2 * Copyright (c) 1983, 1989, 1993, 1994
3 * The Regents of the University of California. 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 acknowledgement:
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.
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32 *
33 * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California. All rights reserved.
34 * @(#)newfs.c 8.13 (Berkeley) 5/1/95
35 * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $
70d0e24f 36 * $DragonFly: src/sbin/newfs/newfs.c,v 1.10 2004/06/26 22:54:01 dillon Exp $
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37 */
38
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39/*
40 * newfs: friendly front end to mkfs
41 */
42#include <sys/param.h>
43#include <sys/stat.h>
44#include <sys/disklabel.h>
45#include <sys/file.h>
46#include <sys/mount.h>
47
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48#include <vfs/ufs/dir.h>
49#include <vfs/ufs/dinode.h>
50#include <vfs/ufs/fs.h>
51#include <vfs/ufs/ufsmount.h>
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52
53#include <ctype.h>
54#include <err.h>
55#include <errno.h>
56#include <paths.h>
57#include <stdio.h>
58#include <stdlib.h>
59#include <string.h>
60#include <syslog.h>
61#include <unistd.h>
62
63#ifdef MFS
64#include <sys/types.h>
65#include <sys/mman.h>
66#endif
67
68#if __STDC__
69#include <stdarg.h>
70#else
71#include <varargs.h>
72#endif
73
74#include "mntopts.h"
76f3e8b3 75#include "defs.h"
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76
77struct mntopt mopts[] = {
78 MOPT_STDOPTS,
79 MOPT_ASYNC,
80 { NULL },
81};
82
984263bc 83void fatal(const char *fmt, ...);
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84
85#define COMPAT /* allow non-labeled disks */
86
87/*
88 * The following two constants set the default block and fragment sizes.
89 * Both constants must be a power of 2 and meet the following constraints:
90 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE
91 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE
92 * DESBLKSIZE / DESFRAGSIZE <= 8
93 */
94#define DFL_FRAGSIZE 2048
95#define DFL_BLKSIZE 16384
96
97/*
98 * Cylinder groups may have up to many cylinders. The actual
99 * number used depends upon how much information can be stored
100 * on a single cylinder. The default is to use as many as possible
101 * cylinders per group.
102 */
103#define DESCPG 65536 /* desired fs_cpg ("infinity") */
104
105/*
106 * Once upon a time...
107 * ROTDELAY gives the minimum number of milliseconds to initiate
108 * another disk transfer on the same cylinder. It is used in
109 * determining the rotationally optimal layout for disk blocks
110 * within a file; the default of fs_rotdelay is 4ms.
111 *
112 * ...but now we make this 0 to disable the rotdelay delay because
113 * modern drives with read/write-behind achieve higher performance
114 * without the delay.
115 */
116#define ROTDELAY 0
117
118/*
119 * MAXBLKPG determines the maximum number of data blocks which are
120 * placed in a single cylinder group. The default is one indirect
121 * block worth of data blocks.
122 */
123#define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
124
125/*
126 * Each file system has a number of inodes statically allocated.
127 * We allocate one inode slot per NFPI fragments, expecting this
128 * to be far more than we will ever need.
129 */
130#define NFPI 4
131
132/*
133 * Once upon a time...
134 * For each cylinder we keep track of the availability of blocks at different
135 * rotational positions, so that we can lay out the data to be picked
136 * up with minimum rotational latency. NRPOS is the default number of
137 * rotational positions that we distinguish. With NRPOS of 8 the resolution
138 * of our summary information is 2ms for a typical 3600 rpm drive.
139 *
140 * ...but now we make this 1 (which essentially disables the rotational
141 * position table because modern drives with read-ahead and write-behind do
142 * better without the rotational position table.
143 */
144#define NRPOS 1 /* number distinct rotational positions */
145
146/*
147 * About the same time as the above, we knew what went where on the disks.
148 * no longer so, so kill the code which finds the different platters too...
149 * We do this by saying one head, with a lot of sectors on it.
150 * The number of sectors are used to determine the size of a cyl-group.
151 * Kirk suggested one or two meg per "cylinder" so we say two.
152 */
153#define NTRACKS 1 /* number of heads */
154#define NSECTORS 4096 /* number of sectors */
155
156int mfs; /* run as the memory based filesystem */
157char *mfs_mtpt; /* mount point for mfs */
158struct stat mfs_mtstat; /* stat prior to mount */
159int Nflag; /* run without writing file system */
160int Oflag; /* format as an 4.3BSD file system */
76f3e8b3 161int Cflag; /* copy underlying filesystem (mfs only) */
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162int Uflag; /* enable soft updates for file system */
163int fssize; /* file system size */
164int ntracks = NTRACKS; /* # tracks/cylinder */
165int nsectors = NSECTORS; /* # sectors/track */
166int nphyssectors; /* # sectors/track including spares */
167int secpercyl; /* sectors per cylinder */
168int trackspares = -1; /* spare sectors per track */
169int cylspares = -1; /* spare sectors per cylinder */
170int sectorsize; /* bytes/sector */
171int realsectorsize; /* bytes/sector in hardware */
172int rpm; /* revolutions/minute of drive */
173int interleave; /* hardware sector interleave */
174int trackskew = -1; /* sector 0 skew, per track */
175int headswitch; /* head switch time, usec */
176int trackseek; /* track-to-track seek, usec */
177int fsize = 0; /* fragment size */
178int bsize = 0; /* block size */
179int cpg = DESCPG; /* cylinders/cylinder group */
180int cpgflg; /* cylinders/cylinder group flag was given */
181int minfree = MINFREE; /* free space threshold */
182int opt = DEFAULTOPT; /* optimization preference (space or time) */
183int density; /* number of bytes per inode */
184int maxcontig = 0; /* max contiguous blocks to allocate */
185int rotdelay = ROTDELAY; /* rotational delay between blocks */
186int maxbpg; /* maximum blocks per file in a cyl group */
187int nrpos = NRPOS; /* # of distinguished rotational positions */
188int avgfilesize = AVFILESIZ;/* expected average file size */
189int avgfilesperdir = AFPDIR;/* expected number of files per directory */
190int bbsize = BBSIZE; /* boot block size */
191int sbsize = SBSIZE; /* superblock size */
192int mntflags = MNT_ASYNC; /* flags to be passed to mount */
193int t_or_u_flag = 0; /* user has specified -t or -u */
194u_long memleft; /* virtual memory available */
195caddr_t membase; /* start address of memory based filesystem */
196char *filename;
197#ifdef COMPAT
198char *disktype;
199int unlabeled;
200#endif
201
202char device[MAXPATHLEN];
e4c9c0c8 203char mfsdevname[256];
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204char *progname;
205
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206struct disklabel *getdisklabel(char *, int);
207static void rewritelabel(char *, int, struct disklabel *);
9a76cd75 208static void usage(void);
e4c9c0c8 209static void mfsintr(int signo);
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210
211int
b5744197 212main(int argc, char **argv)
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213{
214 register int ch;
215 register struct partition *pp;
216 register struct disklabel *lp;
217 struct disklabel mfsfakelabel;
218 struct disklabel *getdisklabel();
219 struct partition oldpartition;
220 struct stat st;
221 struct statfs *mp;
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222 int fsi = 0, fso, len, n, vflag;
223 char *cp = NULL, *s1, *s2, *special, *opstring;
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224#ifdef MFS
225 struct vfsconf vfc;
226 int error;
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227#endif
228
229 vflag = 0;
230 if ((progname = strrchr(*argv, '/')))
231 ++progname;
232 else
233 progname = *argv;
234
235 if (strstr(progname, "mfs")) {
236 mfs = 1;
237 Nflag++;
238 }
239
240 opstring = mfs ?
76f3e8b3 241 "NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" :
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242 "NOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:";
243 while ((ch = getopt(argc, argv, opstring)) != -1)
244 switch (ch) {
245 case 'N':
246 Nflag = 1;
247 break;
248 case 'O':
249 Oflag = 1;
250 break;
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251 case 'C':
252 Cflag = 1; /* MFS only */
253 break;
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254 case 'S':
255 if ((sectorsize = atoi(optarg)) <= 0)
256 fatal("%s: bad sector size", optarg);
257 break;
258#ifdef COMPAT
259 case 'T':
260 disktype = optarg;
261 break;
262#endif
263 case 'F':
264 filename = optarg;
265 break;
266 case 'U':
267 Uflag = 1;
268 break;
269 case 'a':
270 if ((maxcontig = atoi(optarg)) <= 0)
271 fatal("%s: bad maximum contiguous blocks",
272 optarg);
273 break;
274 case 'b':
275 if ((bsize = atoi(optarg)) < MINBSIZE)
276 fatal("%s: bad block size", optarg);
277 break;
278 case 'c':
279 if ((cpg = atoi(optarg)) <= 0)
280 fatal("%s: bad cylinders/group", optarg);
281 cpgflg++;
282 break;
283 case 'd':
284 if ((rotdelay = atoi(optarg)) < 0)
285 fatal("%s: bad rotational delay", optarg);
286 break;
287 case 'e':
288 if ((maxbpg = atoi(optarg)) <= 0)
289 fatal("%s: bad blocks per file in a cylinder group",
290 optarg);
291 break;
292 case 'f':
293 if ((fsize = atoi(optarg)) <= 0)
294 fatal("%s: bad fragment size", optarg);
295 break;
296 case 'g':
297 if ((avgfilesize = atoi(optarg)) <= 0)
298 fatal("%s: bad average file size", optarg);
299 break;
300 case 'h':
301 if ((avgfilesperdir = atoi(optarg)) <= 0)
302 fatal("%s: bad average files per dir", optarg);
303 break;
304 case 'i':
305 if ((density = atoi(optarg)) <= 0)
306 fatal("%s: bad bytes per inode", optarg);
307 break;
308 case 'k':
309 if ((trackskew = atoi(optarg)) < 0)
310 fatal("%s: bad track skew", optarg);
311 break;
312 case 'l':
313 if ((interleave = atoi(optarg)) <= 0)
314 fatal("%s: bad interleave", optarg);
315 break;
316 case 'm':
317 if ((minfree = atoi(optarg)) < 0 || minfree > 99)
318 fatal("%s: bad free space %%", optarg);
319 break;
320 case 'n':
321 if ((nrpos = atoi(optarg)) < 0)
322 fatal("%s: bad rotational layout count",
323 optarg);
324 if (nrpos == 0)
325 nrpos = 1;
326 break;
327 case 'o':
328 if (mfs)
329 getmntopts(optarg, mopts, &mntflags, 0);
330 else {
331 if (strcmp(optarg, "space") == 0)
332 opt = FS_OPTSPACE;
333 else if (strcmp(optarg, "time") == 0)
334 opt = FS_OPTTIME;
335 else
336 fatal("%s: unknown optimization preference: use `space' or `time'", optarg);
337 }
338 break;
339 case 'p':
340 if ((trackspares = atoi(optarg)) < 0)
341 fatal("%s: bad spare sectors per track",
342 optarg);
343 break;
344 case 'r':
345 if ((rpm = atoi(optarg)) <= 0)
346 fatal("%s: bad revolutions/minute", optarg);
347 break;
348 case 's':
349 if ((fssize = atoi(optarg)) <= 0)
350 fatal("%s: bad file system size", optarg);
351 break;
352 case 't':
353 t_or_u_flag++;
354 if ((ntracks = atoi(optarg)) < 0)
355 fatal("%s: bad total tracks", optarg);
356 break;
357 case 'u':
358 t_or_u_flag++;
359 if ((nsectors = atoi(optarg)) < 0)
360 fatal("%s: bad sectors/track", optarg);
361 break;
362 case 'v':
363 vflag = 1;
364 break;
365 case 'x':
366 if ((cylspares = atoi(optarg)) < 0)
367 fatal("%s: bad spare sectors per cylinder",
368 optarg);
369 break;
370 case '?':
371 default:
372 usage();
373 }
374 argc -= optind;
375 argv += optind;
376
377 if (argc != 2 && (mfs || argc != 1))
378 usage();
379
380 special = argv[0];
381 /* Copy the NetBSD way of faking up a disk label */
382 if (mfs && !strcmp(special, "swap")) {
383 /*
384 * it's an MFS, mounted on "swap." fake up a label.
385 * XXX XXX XXX
386 */
387 fso = -1; /* XXX; normally done below. */
388
389 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel));
390 mfsfakelabel.d_secsize = 512;
391 mfsfakelabel.d_nsectors = 64;
392 mfsfakelabel.d_ntracks = 16;
393 mfsfakelabel.d_ncylinders = 16;
394 mfsfakelabel.d_secpercyl = 1024;
395 mfsfakelabel.d_secperunit = 16384;
396 mfsfakelabel.d_rpm = 3600;
397 mfsfakelabel.d_interleave = 1;
398 mfsfakelabel.d_npartitions = 1;
399 mfsfakelabel.d_partitions[0].p_size = 16384;
400 mfsfakelabel.d_partitions[0].p_fsize = 1024;
401 mfsfakelabel.d_partitions[0].p_frag = 8;
402 mfsfakelabel.d_partitions[0].p_cpg = 16;
403
404 lp = &mfsfakelabel;
405 pp = &mfsfakelabel.d_partitions[0];
406
407 goto havelabel;
408 }
409
410 cp = strrchr(special, '/');
411 if (cp == 0) {
412 /*
413 * No path prefix; try /dev/%s.
414 */
415 (void)snprintf(device, sizeof(device), "%s%s", _PATH_DEV, special);
416 special = device;
417 }
418 if (Nflag) {
419 fso = -1;
420 } else {
421 fso = open(special, O_WRONLY);
422 if (fso < 0)
423 fatal("%s: %s", special, strerror(errno));
424
425 /* Bail if target special is mounted */
426 n = getmntinfo(&mp, MNT_NOWAIT);
427 if (n == 0)
428 fatal("%s: getmntinfo: %s", special, strerror(errno));
429
430 len = sizeof(_PATH_DEV) - 1;
431 s1 = special;
432 if (strncmp(_PATH_DEV, s1, len) == 0)
433 s1 += len;
434
435 while (--n >= 0) {
436 s2 = mp->f_mntfromname;
437 if (strncmp(_PATH_DEV, s2, len) == 0) {
438 s2 += len - 1;
439 *s2 = 'r';
440 }
441 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
442 fatal("%s is mounted on %s",
443 special, mp->f_mntonname);
444 ++mp;
445 }
446 }
447 if (mfs && disktype != NULL) {
448 lp = (struct disklabel *)getdiskbyname(disktype);
449 if (lp == NULL)
450 fatal("%s: unknown disk type", disktype);
451 pp = &lp->d_partitions[1];
452 } else {
453 fsi = open(special, O_RDONLY);
454 if (fsi < 0)
455 fatal("%s: %s", special, strerror(errno));
456 if (fstat(fsi, &st) < 0)
457 fatal("%s: %s", special, strerror(errno));
458 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs)
459 printf("%s: %s: not a character-special device\n",
460 progname, special);
461 cp = strchr(argv[0], '\0');
462 if (cp == argv[0])
463 fatal("null special file name");
464 cp--;
b44495f7 465 if (!vflag && (*cp < 'a' || *cp >= 'a' + MAXPARTITIONS) && !isdigit(*cp)) {
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466 fatal("%s: can't figure out file system partition",
467 argv[0]);
b44495f7 468 }
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469#ifdef COMPAT
470 if (!mfs && disktype == NULL)
471 disktype = argv[1];
472#endif
473 lp = getdisklabel(special, fsi);
474 if (vflag || isdigit(*cp))
475 pp = &lp->d_partitions[0];
476 else
477 pp = &lp->d_partitions[*cp - 'a'];
478 if (pp->p_size == 0)
479 fatal("%s: `%c' partition is unavailable",
480 argv[0], *cp);
481 if (pp->p_fstype == FS_BOOT)
482 fatal("%s: `%c' partition overlaps boot program",
483 argv[0], *cp);
484 }
485havelabel:
486 if (fssize == 0)
487 fssize = pp->p_size;
488 if (fssize > pp->p_size && !mfs)
489 fatal("%s: maximum file system size on the `%c' partition is %d",
490 argv[0], *cp, pp->p_size);
491 if (rpm == 0) {
492 rpm = lp->d_rpm;
493 if (rpm <= 0)
494 rpm = 3600;
495 }
496 if (ntracks == 0) {
497 ntracks = lp->d_ntracks;
498 if (ntracks <= 0)
499 fatal("%s: no default #tracks", argv[0]);
500 }
501 if (nsectors == 0) {
502 nsectors = lp->d_nsectors;
503 if (nsectors <= 0)
504 fatal("%s: no default #sectors/track", argv[0]);
505 }
506 if (sectorsize == 0) {
507 sectorsize = lp->d_secsize;
508 if (sectorsize <= 0)
509 fatal("%s: no default sector size", argv[0]);
510 }
511 if (trackskew == -1) {
512 trackskew = lp->d_trackskew;
513 if (trackskew < 0)
514 trackskew = 0;
515 }
516 if (interleave == 0) {
517 interleave = lp->d_interleave;
518 if (interleave <= 0)
519 interleave = 1;
520 }
521 if (fsize == 0) {
522 fsize = pp->p_fsize;
523 if (fsize <= 0)
524 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize);
525 }
526 if (bsize == 0) {
527 bsize = pp->p_frag * pp->p_fsize;
528 if (bsize <= 0)
529 bsize = MIN(DFL_BLKSIZE, 8 * fsize);
530 }
531 /*
532 * Maxcontig sets the default for the maximum number of blocks
533 * that may be allocated sequentially. With filesystem clustering
534 * it is possible to allocate contiguous blocks up to the maximum
535 * transfer size permitted by the controller or buffering.
536 */
537 if (maxcontig == 0)
538 maxcontig = MAX(1, MAXPHYS / bsize - 1);
539 if (density == 0)
540 density = NFPI * fsize;
541 if (minfree < MINFREE && opt != FS_OPTSPACE) {
542 fprintf(stderr, "Warning: changing optimization to space ");
543 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
544 opt = FS_OPTSPACE;
545 }
546 if (trackspares == -1) {
547 trackspares = lp->d_sparespertrack;
548 if (trackspares < 0)
549 trackspares = 0;
550 }
551 nphyssectors = nsectors + trackspares;
552 if (cylspares == -1) {
553 cylspares = lp->d_sparespercyl;
554 if (cylspares < 0)
555 cylspares = 0;
556 }
557 secpercyl = nsectors * ntracks - cylspares;
558 /*
559 * Only complain if -t or -u have been specified; the default
560 * case (4096 sectors per cylinder) is intended to disagree
561 * with the disklabel.
562 */
563 if (t_or_u_flag && secpercyl != lp->d_secpercyl)
564 fprintf(stderr, "%s (%d) %s (%lu)\n",
565 "Warning: calculated sectors per cylinder", secpercyl,
566 "disagrees with disk label", (u_long)lp->d_secpercyl);
567 if (maxbpg == 0)
568 maxbpg = MAXBLKPG(bsize);
569 headswitch = lp->d_headswitch;
570 trackseek = lp->d_trkseek;
571#ifdef notdef /* label may be 0 if faked up by kernel */
572 bbsize = lp->d_bbsize;
573 sbsize = lp->d_sbsize;
574#endif
575 oldpartition = *pp;
576#ifdef tahoe
577 realsectorsize = sectorsize;
578 if (sectorsize != DEV_BSIZE) { /* XXX */
579 int secperblk = DEV_BSIZE / sectorsize;
580
581 sectorsize = DEV_BSIZE;
582 nsectors /= secperblk;
583 nphyssectors /= secperblk;
584 secpercyl /= secperblk;
585 fssize /= secperblk;
586 pp->p_size /= secperblk;
587 }
588#else
589 realsectorsize = sectorsize;
590 if (sectorsize != DEV_BSIZE) { /* XXX */
591 int secperblk = sectorsize / DEV_BSIZE;
592
593 sectorsize = DEV_BSIZE;
594 nsectors *= secperblk;
595 nphyssectors *= secperblk;
596 secpercyl *= secperblk;
597 fssize *= secperblk;
598 pp->p_size *= secperblk;
599 }
600#endif
601 if (mfs) {
602 mfs_mtpt = argv[1];
603 if (
604 stat(mfs_mtpt, &mfs_mtstat) < 0 ||
605 !S_ISDIR(mfs_mtstat.st_mode)
606 ) {
607 fatal("mount point not dir: %s", mfs_mtpt);
608 }
609 }
76f3e8b3 610 mkfs(pp, special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL);
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611#ifdef tahoe
612 if (realsectorsize != DEV_BSIZE)
613 pp->p_size *= DEV_BSIZE / realsectorsize;
614#else
615 if (realsectorsize != DEV_BSIZE)
616 pp->p_size /= realsectorsize /DEV_BSIZE;
617#endif
618 if (!Nflag && bcmp(pp, &oldpartition, sizeof(oldpartition)))
619 rewritelabel(special, fso, lp);
620 if (!Nflag)
621 close(fso);
622 close(fsi);
623#ifdef MFS
624 if (mfs) {
625 struct mfs_args args;
e4c9c0c8 626 int udev;
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628 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d",
629 getpid());
630 args.fspec = mfsdevname;
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631 args.export.ex_root = -2;
632 if (mntflags & MNT_RDONLY)
633 args.export.ex_flags = MNT_EXRDONLY;
634 else
635 args.export.ex_flags = 0;
636 args.base = membase;
637 args.size = fssize * sectorsize;
638
639 error = getvfsbyname("mfs", &vfc);
640 if (error && vfsisloadable("mfs")) {
641 if (vfsload("mfs"))
642 fatal("vfsload(mfs)");
643 endvfsent(); /* flush cache */
644 error = getvfsbyname("mfs", &vfc);
645 }
646 if (error)
647 fatal("mfs filesystem not available");
648
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649 udev = (253 << 8) | (getpid() & 255) |
650 ((getpid() & ~0xFF) << 8);
651 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0)
652 printf("Warning: unable to create %s\n", mfsdevname);
653 signal(SIGINT, mfsintr);
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654 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0)
655 fatal("%s: %s", argv[1], strerror(errno));
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656 signal(SIGINT, SIG_DFL);
657 mfsintr(SIGINT);
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658 }
659#endif
660 exit(0);
661}
662
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663#ifdef MFS
664
665static void
666mfsintr(int signo)
667{
668 if (filename)
669 munmap(membase, fssize * sectorsize);
670 remove(mfsdevname);
671}
672
673#endif
674
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675#ifdef COMPAT
676char lmsg[] = "%s: can't read disk label; disk type must be specified";
677#else
678char lmsg[] = "%s: can't read disk label";
679#endif
680
681struct disklabel *
b5744197 682getdisklabel(char *s, int fd)
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683{
684 static struct disklabel lab;
685
686 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
687#ifdef COMPAT
688 if (disktype) {
689 struct disklabel *lp, *getdiskbyname();
690
691 unlabeled++;
692 lp = getdiskbyname(disktype);
693 if (lp == NULL)
694 fatal("%s: unknown disk type", disktype);
695 return (lp);
696 }
697#endif
698 warn("ioctl (GDINFO)");
699 fatal(lmsg, s);
700 }
701 return (&lab);
702}
703
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704static void
705rewritelabel(char *s, int fd, struct disklabel *lp)
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706{
707#ifdef COMPAT
708 if (unlabeled)
709 return;
710#endif
711 lp->d_checksum = 0;
712 lp->d_checksum = dkcksum(lp);
713 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
714 warn("ioctl (WDINFO)");
715 fatal("%s: can't rewrite disk label", s);
716 }
717}
718
719/*VARARGS*/
720void
984263bc 721fatal(const char *fmt, ...)
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722{
723 va_list ap;
724
984263bc 725 va_start(ap, fmt);
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726 if (fcntl(STDERR_FILENO, F_GETFL) < 0) {
727 openlog(progname, LOG_CONS, LOG_DAEMON);
728 vsyslog(LOG_ERR, fmt, ap);
729 closelog();
730 } else {
731 vwarnx(fmt, ap);
732 }
733 va_end(ap);
734 exit(1);
735 /*NOTREACHED*/
736}
737
738static void
b5744197 739usage(void)
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740{
741 if (mfs) {
742 fprintf(stderr,
743 "usage: %s [ -fsoptions ] special-device mount-point\n",
744 progname);
745 } else
746 fprintf(stderr,
747 "usage: %s [ -fsoptions ] special-device%s\n",
748 progname,
749#ifdef COMPAT
750 " [device-type]");
751#else
752 "");
753#endif
754 fprintf(stderr, "where fsoptions are:\n");
70d0e24f 755 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n");
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756 fprintf(stderr,
757 "\t-N do not create file system, just print out parameters\n");
758 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n");
759 fprintf(stderr, "\t-S sector size\n");
760#ifdef COMPAT
761 fprintf(stderr, "\t-T disktype\n");
762#endif
763 fprintf(stderr, "\t-U enable soft updates\n");
764 fprintf(stderr, "\t-a maximum contiguous blocks\n");
765 fprintf(stderr, "\t-b block size\n");
766 fprintf(stderr, "\t-c cylinders/group\n");
767 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
768 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
769 fprintf(stderr, "\t-f frag size\n");
770 fprintf(stderr, "\t-g average file size\n");
771 fprintf(stderr, "\t-h average files per directory\n");
772 fprintf(stderr, "\t-i number of bytes per inode\n");
773 fprintf(stderr, "\t-k sector 0 skew, per track\n");
774 fprintf(stderr, "\t-l hardware sector interleave\n");
775 fprintf(stderr, "\t-m minimum free space %%\n");
776 fprintf(stderr, "\t-n number of distinguished rotational positions\n");
777 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
778 fprintf(stderr, "\t-p spare sectors per track\n");
779 fprintf(stderr, "\t-s file system size (sectors)\n");
780 fprintf(stderr, "\t-r revolutions/minute\n");
781 fprintf(stderr, "\t-t tracks/cylinder\n");
782 fprintf(stderr, "\t-u sectors/track\n");
783 fprintf(stderr,
784 "\t-v do not attempt to determine partition name from device name\n");
785 fprintf(stderr, "\t-x spare sectors per cylinder\n");
786 exit(1);
787}