newfs.c revision 1.2 
1/*	$NetBSD: newfs.c,v 1.2 1999/07/15 19:09:40 perseant Exp $	*/
2
3/*-
4 * Copyright (c) 1989, 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37#ifndef lint
38__COPYRIGHT("@(#) Copyright (c) 1989, 1992, 1993\n\
39	The Regents of the University of California.  All rights reserved.\n");
40#endif /* not lint */
41
42#ifndef lint
43#if 0
44static char sccsid[] = "@(#)newfs.c	8.5 (Berkeley) 5/24/95";
45#else
46__RCSID("$NetBSD: newfs.c,v 1.2 1999/07/15 19:09:40 perseant Exp $");
47#endif
48#endif /* not lint */
49
50/*
51 * newfs: friendly front end to mkfs
52 */
53#include <sys/param.h>
54#include <sys/ucred.h>
55#include <sys/stat.h>
56#include <sys/ioctl.h>
57#include <sys/disklabel.h>
58#include <sys/file.h>
59#include <sys/mount.h>
60#include <sys/sysctl.h>
61
62#include <ufs/ufs/dir.h>
63#include <ufs/ufs/dinode.h>
64
65#include <disktab.h>
66#include <errno.h>
67#include <unistd.h>
68#include <stdio.h>
69#include <stdlib.h>
70#include <ctype.h>
71#include <string.h>
72#include <paths.h>
73#include <util.h>
74#include "config.h"
75#include "extern.h"
76
77#define	COMPAT			/* allow non-labeled disks */
78
79int	Nflag;			/* run without writing file system */
80int	fssize;			/* file system size */
81int	sectorsize;		/* bytes/sector */
82int	fsize = 0;		/* fragment size */
83int	bsize = 0;		/* block size */
84int	minfree = MINFREE;	/* free space threshold */
85int	bbsize = BBSIZE;	/* boot block size */
86int	sbsize = SBSIZE;	/* superblock size */
87u_long	memleft;		/* virtual memory available */
88caddr_t	membase;		/* start address of memory based filesystem */
89#ifdef COMPAT
90char	*disktype;
91int	unlabeled;
92#endif
93
94char	device[MAXPATHLEN];
95char	*progname, *special;
96
97int main __P((int, char **));
98static struct disklabel *getdisklabel __P((char *, int));
99static struct disklabel *debug_readlabel __P((int));
100#ifdef notdef
101static void rewritelabel __P((char *, int, struct disklabel *));
102#endif
103static void usage __P((void));
104
105int
106main(argc, argv)
107	int argc;
108	char *argv[];
109{
110	int ch;
111	struct partition *pp;
112	struct disklabel *lp;
113	struct stat st;
114	int debug, lfs, fsi, fso, segsize, maxpartitions;
115	char *cp, *opstring;
116
117	if ((progname = strrchr(*argv, '/')) != NULL)
118		++progname;
119	else
120		progname = *argv;
121
122	maxpartitions = getmaxpartitions();
123	if (maxpartitions > 26)
124		fatal("insane maxpartitions value %d", maxpartitions);
125
126	opstring = "B:DLNb:f:m:s:";
127
128	debug = lfs = segsize = 0;
129	while ((ch = getopt(argc, argv, opstring)) != -1)
130		switch(ch) {
131		case 'B':	/* LFS segment size */
132			if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE)
133				fatal("%s: bad segment size", optarg);
134			break;
135		case 'D':
136			debug = 1;
137			break;
138		case 'L':	/* Create lfs */
139			lfs = 1;
140			break;
141		case 'N':
142			Nflag++;
143			break;
144#ifdef COMPAT
145		case 'T':
146			disktype = optarg;
147			break;
148#endif
149		case 'b':	/* used for LFS */
150			if ((bsize = atoi(optarg)) < LFS_MINBLOCKSIZE)
151				fatal("%s: bad block size", optarg);
152			break;
153		case 'f':
154			if ((fsize = atoi(optarg)) <= 0)
155				fatal("%s: bad frag size", optarg);
156			break;
157		case 'm':
158			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
159				fatal("%s: bad free space %%\n", optarg);
160			break;
161		case 's':
162			if ((fssize = atoi(optarg)) <= 0)
163				fatal("%s: bad file system size", optarg);
164			break;
165		case '?':
166		default:
167			usage();
168		}
169	argc -= optind;
170	argv += optind;
171
172	if (argc != 2 && argc != 1)
173		usage();
174
175	/*
176	 * If the -N flag isn't specified, open the output file.  If no path
177	 * prefix, try /dev/r%s and then /dev/%s.
178	 */
179	special = argv[0];
180	if (strchr(special, '/') == NULL) {
181		(void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV,
182		    special);
183		if (stat(device, &st) == -1)
184			(void)snprintf(device, sizeof(device), "%s%s",
185			    _PATH_DEV, special);
186		special = device;
187	}
188	if (!Nflag) {
189		fso = open(special,
190		    (debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE);
191		if (fso < 0)
192			fatal("%s: %s", special, strerror(errno));
193	} else
194		fso = -1;
195
196	/* Open the input file. */
197	fsi = open(special, O_RDONLY);
198	if (fsi < 0)
199		fatal("%s: %s", special, strerror(errno));
200	if (fstat(fsi, &st) < 0)
201		fatal("%s: %s", special, strerror(errno));
202
203	if (!debug && !S_ISCHR(st.st_mode))
204		(void)printf("%s: %s: not a character-special device\n",
205		    progname, special);
206	cp = strchr(argv[0], '\0') - 1;
207	if (!debug
208	    && (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1))
209	    && !isdigit(*cp))))
210		fatal("%s: can't figure out file system partition", argv[0]);
211
212#ifdef COMPAT
213	if (disktype == NULL)
214		disktype = argv[1];
215#endif
216	if (debug)
217		lp = debug_readlabel(fsi);
218	else
219		lp = getdisklabel(special, fsi);
220
221	if (isdigit(*cp))
222		pp = &lp->d_partitions[0];
223	else
224		pp = &lp->d_partitions[*cp - 'a'];
225	if (pp->p_size == 0)
226		fatal("%s: `%c' partition is unavailable", argv[0], *cp);
227
228	/* If we're making a LFS, we break out here */
229	exit(make_lfs(fso, lp, pp, minfree, bsize, fsize, segsize));
230}
231
232#ifdef COMPAT
233char lmsg[] = "%s: can't read disk label; disk type must be specified";
234#else
235char lmsg[] = "%s: can't read disk label";
236#endif
237
238static struct disklabel *
239getdisklabel(s, fd)
240	char *s;
241	int fd;
242{
243	static struct disklabel lab;
244
245	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
246#ifdef COMPAT
247		if (disktype) {
248			struct disklabel *lp;
249
250			unlabeled++;
251			lp = getdiskbyname(disktype);
252			if (lp == NULL)
253				fatal("%s: unknown disk type", disktype);
254			return (lp);
255		}
256#endif
257		(void)fprintf(stderr,
258		    "%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
259		fatal(lmsg, s);
260	}
261	return (&lab);
262}
263
264
265static struct disklabel *
266debug_readlabel(fd)
267	int fd;
268{
269	static struct disklabel lab;
270	int n;
271
272	if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
273		fatal("unable to read disk label: %s", strerror(errno));
274	else if (n < sizeof(struct disklabel))
275		fatal("short read of disklabel: %d of %d bytes", n,
276			sizeof(struct disklabel));
277	return(&lab);
278}
279
280#ifdef notdef
281static void
282rewritelabel(s, fd, lp)
283	char *s;
284	int fd;
285	struct disklabel *lp;
286{
287#ifdef COMPAT
288	if (unlabeled)
289		return;
290#endif
291	lp->d_checksum = 0;
292	lp->d_checksum = dkcksum(lp);
293	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
294		(void)fprintf(stderr,
295		    "%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
296		fatal("%s: can't rewrite disk label", s);
297	}
298#if __vax__
299	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
300		int i;
301		int cfd;
302		daddr_t alt;
303		char specname[64];
304		char blk[1024];
305		char *cp;
306
307		/*
308		 * Make name for 'c' partition.
309		 */
310		strcpy(specname, s);
311		cp = specname + strlen(specname) - 1;
312		if (!isdigit(*cp))
313			*cp = 'c';
314		cfd = open(specname, O_WRONLY);
315		if (cfd < 0)
316			fatal("%s: %s", specname, strerror(errno));
317		memset(blk, 0, sizeof(blk));
318		*(struct disklabel *)(blk + LABELOFFSET) = *lp;
319		alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
320		for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
321			if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize),
322			    SEEK_SET) == -1)
323				fatal("lseek to badsector area: %s",
324				    strerror(errno));
325			if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
326				fprintf(stderr,
327				    "%s: alternate label %d write: %s\n",
328				    progname, i/2, strerror(errno));
329		}
330		close(cfd);
331	}
332#endif /* vax */
333}
334#endif /* notdef */
335
336void
337usage()
338{
339	fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n");
340	fprintf(stderr, "where fsoptions are:\n");
341	fprintf(stderr, "\t-B LFS segment size\n");
342	fprintf(stderr, "\t-D debug\n");
343	/* fprintf(stderr, "\t-L create LFS file system\n"); */
344	fprintf(stderr,
345	    "\t-N do not create file system, just print out parameters\n");
346	fprintf(stderr, "\t-b block size\n");
347	fprintf(stderr, "\t-f frag size\n");
348	fprintf(stderr, "\t-m minimum free space %%\n");
349	fprintf(stderr, "\t-s file system size (sectors)\n");
350	exit(1);
351}
352