summaryrefslogtreecommitdiffstats
path: root/sbin/newfs/newfs.c
blob: 6c43a375d84b2263ded4c9f9521003378fe87752 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/*
 * Copyright (c) 2002 Networks Associates Technology, Inc.
 * All rights reserved.
 *
 * This software was developed for the FreeBSD Project by Marshall
 * Kirk McKusick and Network Associates Laboratories, the Security
 * Research Division of Network Associates, Inc. under DARPA/SPAWAR
 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
 * research program
 *
 * Copyright (c) 1982, 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * Copyright (c) 1983, 1989, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1983, 1989, 1993, 1994\n\
	The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)newfs.c	8.13 (Berkeley) 5/1/95";
#endif
static const char rcsid[] =
  "$FreeBSD$";
#endif /* not lint */

/*
 * newfs: friendly front end to mkfs
 */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/disk.h>
#include <sys/disklabel.h>
#include <sys/file.h>
#include <sys/mount.h>

#include <ufs/ufs/dir.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <ufs/ufs/ufsmount.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <paths.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>

#include "newfs.h"

/*
 * The following two constants set the default block and fragment sizes.
 * Both constants must be a power of 2 and meet the following constraints:
 *	MINBSIZE <= DESBLKSIZE <= MAXBSIZE
 *	sectorsize <= DESFRAGSIZE <= DESBLKSIZE
 *	DESBLKSIZE / DESFRAGSIZE <= 8
 */
#define	DFL_FRAGSIZE	2048
#define	DFL_BLKSIZE	16384

/*
 * Cylinder groups may have up to MAXBLKSPERCG blocks. The actual
 * number used depends upon how much information can be stored
 * in a cylinder group map which must fit in a single filesystem
 * block. The default is to use as many as possible blocks per group.
 */
#define	MAXBLKSPERCG	0x7fffffff	/* desired fs_fpg ("infinity") */

/*
 * MAXBLKPG determines the maximum number of data blocks which are
 * placed in a single cylinder group. The default is one indirect
 * block worth of data blocks.
 */
#define MAXBLKPG(bsize)	((bsize) / sizeof(ufs2_daddr_t))

/*
 * Each filesystem has a number of inodes statically allocated.
 * We allocate one inode slot per NFPI fragments, expecting this
 * to be far more than we will ever need.
 */
#define	NFPI		4

int	Nflag;			/* run without writing filesystem */
int	Oflag = 1;		/* filesystem format (1 => UFS1, 2 => UFS2) */
int	Rflag;			/* regression test */
int	Uflag;			/* enable soft updates for filesystem */
quad_t	fssize;			/* file system size */
int	sectorsize;		/* bytes/sector */
int	realsectorsize;		/* bytes/sector in hardware */
int	fsize = 0;		/* fragment size */
int	bsize = 0;		/* block size */
int	maxbsize = 0;		/* maximum clustering */
int	maxblkspercg = MAXBLKSPERCG; /* maximum blocks per cylinder group */
int	minfree = MINFREE;	/* free space threshold */
int	opt = DEFAULTOPT;	/* optimization preference (space or time) */
int	density;		/* number of bytes per inode */
int	maxcontig = 0;		/* max contiguous blocks to allocate */
int	maxbpg;			/* maximum blocks per file in a cyl group */
int	avgfilesize = AVFILESIZ;/* expected average file size */
int	avgfilesperdir = AFPDIR;/* expected number of files per directory */
int	fso;			/* filedescriptor to device */

static char	device[MAXPATHLEN];
static char	*disktype;
static int	unlabeled;

static struct disklabel *getdisklabel(char *s);
static void rewritelabel(char *s, struct disklabel *lp);
static void usage(void);

int
main(int argc, char *argv[])
{
	struct partition *pp;
	struct disklabel *lp;
	struct partition oldpartition;
	struct stat st;
	char *cp, *special;
	int ch;
	off_t mediasize;

	while ((ch = getopt(argc, argv,
	    "NO:RS:T:Ua:b:c:d:e:f:g:h:i:m:o:s:")) != -1)
		switch (ch) {
		case 'N':
			Nflag = 1;
			break;
		case 'O':
			if ((Oflag = atoi(optarg)) < 1 || Oflag > 2)
				errx(1, "%s: bad filesystem format value",
				    optarg);
			break;
		case 'R':
			Rflag = 1;
			break;
		case 'S':
			if ((sectorsize = atoi(optarg)) <= 0)
				errx(1, "%s: bad sector size", optarg);
			break;
		case 'T':
			disktype = optarg;
			break;
		case 'U':
			Uflag = 1;
			break;
		case 'a':
			if ((maxcontig = atoi(optarg)) <= 0)
				errx(1, "%s: bad maximum contiguous blocks",
				    optarg);
			break;
		case 'b':
			if ((bsize = atoi(optarg)) < MINBSIZE)
				errx(1, "%s: bad block size", optarg);
			break;
		case 'c':
			if ((maxblkspercg = atoi(optarg)) <= 0)
				errx(1, "%s: bad blocks per cylinder group",
				    optarg);
			break;
		case 'd':
			if ((maxbsize = atoi(optarg)) < MINBSIZE)
				errx(1, "%s: bad extent block size", optarg);
			break;
		case 'e':
			if ((maxbpg = atoi(optarg)) <= 0)
			  errx(1, "%s: bad blocks per file in a cylinder group",
				    optarg);
			break;
		case 'f':
			if ((fsize = atoi(optarg)) <= 0)
				errx(1, "%s: bad fragment size", optarg);
			break;
		case 'g':
			if ((avgfilesize = atoi(optarg)) <= 0)
				errx(1, "%s: bad average file size", optarg);
			break;
		case 'h':
			if ((avgfilesperdir = atoi(optarg)) <= 0)
			       errx(1, "%s: bad average files per dir", optarg);
			break;
		case 'i':
			if ((density = atoi(optarg)) <= 0)
				errx(1, "%s: bad bytes per inode", optarg);
			break;
		case 'm':
			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
				errx(1, "%s: bad free space %%", optarg);
			break;
		case 'o':
			if (strcmp(optarg, "space") == 0)
				opt = FS_OPTSPACE;
			else if (strcmp(optarg, "time") == 0)
				opt = FS_OPTTIME;
			else
				errx(1, 
		"%s: unknown optimization preference: use `space' or `time'",
				    optarg);
			break;
		case 's':
			if ((fssize = atoi(optarg)) <= 0)
				errx(1, "%s: bad filesystem size", optarg);
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc != 1)
		usage();

	special = argv[0];
	cp = strrchr(special, '/');
	if (cp == 0) {
		/*
		 * No path prefix; try prefixing _PATH_DEV.
		 */
		snprintf(device, sizeof(device), "%s%s", _PATH_DEV, special);
		special = device;
	}

	fso = open(special, Nflag ? O_RDONLY : O_RDWR);
	if (fso < 0)
		err(1, "%s", special);
	if (fstat(fso, &st) < 0)
		err(1, "%s", special);
	if ((st.st_mode & S_IFMT) != S_IFCHR)
		errx(1, "%s: not a character-special device", special);

	if (sectorsize == 0) 
		ioctl(fso, DIOCGSECTORSIZE, &sectorsize);
	if (sectorsize && !ioctl(fso, DIOCGMEDIASIZE, &mediasize)) {
		if (fssize == 0)
			fssize = mediasize / sectorsize;
		else if (fssize > mediasize / sectorsize)
			errx(1, "%s: maximum filesystem size is %u",
			    special, (u_int)(mediasize / sectorsize));
	}
	pp = NULL;
	lp = getdisklabel(special);
	if (lp != NULL) {
		cp = strchr(special, '\0');
		cp--;
		if ((*cp < 'a' || *cp > 'h') && !isdigit(*cp))
			errx(1, "%s: can't figure out filesystem partition",
			    special);
		if (isdigit(*cp))
			pp = &lp->d_partitions[RAW_PART];
		else
			pp = &lp->d_partitions[*cp - 'a'];
		oldpartition = *pp;
		if (pp->p_size == 0)
			errx(1, "%s: `%c' partition is unavailable",
			    special, *cp);
		if (pp->p_fstype == FS_BOOT)
			errx(1, "%s: `%c' partition overlaps boot program",
			    special, *cp);
		if (fssize == 0)
			fssize = pp->p_size;
		if (fssize > pp->p_size)
			errx(1, 
		    "%s: maximum filesystem size %d", special, pp->p_size);
		if (sectorsize == 0)
			sectorsize = lp->d_secsize;
		if (fsize == 0)
			fsize = pp->p_fsize;
		if (bsize == 0)
			bsize = pp->p_frag * pp->p_fsize;
	}
	if (sectorsize <= 0)
		errx(1, "%s: no default sector size", special);
	if (fsize <= 0)
		fsize = MAX(DFL_FRAGSIZE, sectorsize);
	if (bsize <= 0)
		bsize = MIN(DFL_BLKSIZE, 8 * fsize);
	if (maxbsize == 0)
		maxbsize = bsize;
	/*
	 * Maxcontig sets the default for the maximum number of blocks
	 * that may be allocated sequentially. With filesystem clustering
	 * it is possible to allocate contiguous blocks up to the maximum
	 * transfer size permitted by the controller or buffering.
	 */
	if (maxcontig == 0)
		maxcontig = MAX(1, MAXPHYS / bsize);
	if (density == 0)
		density = NFPI * fsize;
	if (minfree < MINFREE && opt != FS_OPTSPACE) {
		fprintf(stderr, "Warning: changing optimization to space ");
		fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
		opt = FS_OPTSPACE;
	}
	if (maxbpg == 0)
		maxbpg = MAXBLKPG(bsize);
	realsectorsize = sectorsize;
	if (sectorsize != DEV_BSIZE) {		/* XXX */
		int secperblk = sectorsize / DEV_BSIZE;

		sectorsize = DEV_BSIZE;
		fssize *= secperblk;
		if (pp != NULL);
			pp->p_size *= secperblk;
	}
	mkfs(pp, special);
	if (!unlabeled) {
		if (realsectorsize != DEV_BSIZE)
			pp->p_size /= realsectorsize / DEV_BSIZE;
		if (!Nflag && bcmp(pp, &oldpartition, sizeof(oldpartition)))
			rewritelabel(special, lp);
	}
	close(fso);
	exit(0);
}

struct disklabel *
getdisklabel(char *s)
{
	static struct disklabel lab;
	struct disklabel *lp;

	if (!ioctl(fso, DIOCGDINFO, (char *)&lab))
		return (&lab);
	unlabeled++;
	if (disktype) {
		lp = getdiskbyname(disktype);
		if (lp != NULL)
			return (lp);
	}
	return (NULL);
}

void
rewritelabel(char *s, struct disklabel *lp)
{
	if (unlabeled)
		return;
	lp->d_checksum = 0;
	lp->d_checksum = dkcksum(lp);
	if (ioctl(fso, DIOCWDINFO, (char *)lp) < 0) {
		warn("ioctl (WDINFO)");
		errx(1, "%s: can't rewrite disk label", s);
	}
}

static void
usage()
{
	fprintf(stderr,
	    "usage: %s [ -fsoptions ] special-device%s\n",
	    getprogname(),
	    " [device-type]");
	fprintf(stderr, "where fsoptions are:\n");
	fprintf(stderr,
	    "\t-N do not create filesystem, just print out parameters\n");
	fprintf(stderr, "\t-O filesystem format: 1 => UFS1, 2 => UFS2\n");
	fprintf(stderr, "\t-R regression test, supress random factors\n");
	fprintf(stderr, "\t-S sector size\n");
	fprintf(stderr, "\t-T disktype\n");
	fprintf(stderr, "\t-U enable soft updates\n");
	fprintf(stderr, "\t-a maximum contiguous blocks\n");
	fprintf(stderr, "\t-b block size\n");
	fprintf(stderr, "\t-c blocks per cylinders group\n");
	fprintf(stderr, "\t-d maximum extent size\n");
	fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
	fprintf(stderr, "\t-f frag size\n");
	fprintf(stderr, "\t-g average file size\n");
	fprintf(stderr, "\t-h average files per directory\n");
	fprintf(stderr, "\t-i number of bytes per inode\n");
	fprintf(stderr, "\t-m minimum free space %%\n");
	fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
	fprintf(stderr, "\t-s file systemsize (sectors)\n");
	exit(1);
}
OpenPOWER on IntegriCloud