newfs.c revision 1.3 
1/*	$NetBSD: newfs.c,v 1.3 2000/02/12 23:58:09 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 1.3 2000/02/12 23:58:09 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, force, 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:DFLNb:f:m:s:";
127
128	debug = force = 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 'F':
139			force = 1;
140			break;
141		case 'L':	/* Create lfs */
142			lfs = 1;
143			break;
144		case 'N':
145			Nflag++;
146			break;
147#ifdef COMPAT
148		case 'T':
149			disktype = optarg;
150			break;
151#endif
152		case 'b':	/* used for LFS */
153			if ((bsize = atoi(optarg)) < LFS_MINBLOCKSIZE)
154				fatal("%s: bad block size", optarg);
155			break;
156		case 'f':
157			if ((fsize = atoi(optarg)) <= 0)
158				fatal("%s: bad frag size", optarg);
159			break;
160		case 'm':
161			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
162				fatal("%s: bad free space %%\n", optarg);
163			break;
164		case 's':
165			if ((fssize = atoi(optarg)) <= 0)
166				fatal("%s: bad file system size", optarg);
167			break;
168		case '?':
169		default:
170			usage();
171		}
172	argc -= optind;
173	argv += optind;
174
175	if (argc != 2 && argc != 1)
176		usage();
177
178	/*
179	 * If the -N flag isn't specified, open the output file.  If no path
180	 * prefix, try /dev/r%s and then /dev/%s.
181	 */
182	special = argv[0];
183	if (strchr(special, '/') == NULL) {
184		(void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV,
185		    special);
186		if (stat(device, &st) == -1)
187			(void)snprintf(device, sizeof(device), "%s%s",
188			    _PATH_DEV, special);
189		special = device;
190	}
191	if (!Nflag) {
192		fso = open(special,
193		    (debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE);
194		if (fso < 0)
195			fatal("%s: %s", special, strerror(errno));
196	} else
197		fso = -1;
198
199	/* Open the input file. */
200	fsi = open(special, O_RDONLY);
201	if (fsi < 0)
202		fatal("%s: %s", special, strerror(errno));
203	if (fstat(fsi, &st) < 0)
204		fatal("%s: %s", special, strerror(errno));
205
206	if (!debug && !S_ISCHR(st.st_mode))
207		(void)printf("%s: %s: not a character-special device\n",
208		    progname, special);
209	cp = strchr(argv[0], '\0') - 1;
210	if (!debug
211	    && (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1))
212	    && !isdigit(*cp))))
213		fatal("%s: can't figure out file system partition", argv[0]);
214
215#ifdef COMPAT
216	if (disktype == NULL)
217		disktype = argv[1];
218#endif
219	if (debug)
220		lp = debug_readlabel(fsi);
221	else
222		lp = getdisklabel(special, fsi);
223
224	if (isdigit(*cp))
225		pp = &lp->d_partitions[0];
226	else
227		pp = &lp->d_partitions[*cp - 'a'];
228	if (pp->p_size == 0)
229		fatal("%s: `%c' partition is unavailable", argv[0], *cp);
230
231	/* If force, make the partition look like an LFS */
232	if(force) {
233		pp->p_fstype = FS_BSDLFS;
234		/* 0 means to use defaults */
235		pp->p_fsize  = 0;
236		pp->p_frag   = 0;
237		pp->p_sgs    = 0;
238	}
239
240	/* If we're making a LFS, we break out here */
241	exit(make_lfs(fso, lp, pp, minfree, bsize, fsize, segsize));
242}
243
244#ifdef COMPAT
245char lmsg[] = "%s: can't read disk label; disk type must be specified";
246#else
247char lmsg[] = "%s: can't read disk label";
248#endif
249
250static struct disklabel *
251getdisklabel(s, fd)
252	char *s;
253	int fd;
254{
255	static struct disklabel lab;
256
257	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
258#ifdef COMPAT
259		if (disktype) {
260			struct disklabel *lp;
261
262			unlabeled++;
263			lp = getdiskbyname(disktype);
264			if (lp == NULL)
265				fatal("%s: unknown disk type", disktype);
266			return (lp);
267		}
268#endif
269		(void)fprintf(stderr,
270		    "%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
271		fatal(lmsg, s);
272	}
273	return (&lab);
274}
275
276
277static struct disklabel *
278debug_readlabel(fd)
279	int fd;
280{
281	static struct disklabel lab;
282	int n;
283
284	if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
285		fatal("unable to read disk label: %s", strerror(errno));
286	else if (n < sizeof(struct disklabel))
287		fatal("short read of disklabel: %d of %d bytes", n,
288			sizeof(struct disklabel));
289	return(&lab);
290}
291
292#ifdef notdef
293static void
294rewritelabel(s, fd, lp)
295	char *s;
296	int fd;
297	struct disklabel *lp;
298{
299#ifdef COMPAT
300	if (unlabeled)
301		return;
302#endif
303	lp->d_checksum = 0;
304	lp->d_checksum = dkcksum(lp);
305	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
306		(void)fprintf(stderr,
307		    "%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
308		fatal("%s: can't rewrite disk label", s);
309	}
310#if __vax__
311	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
312		int i;
313		int cfd;
314		daddr_t alt;
315		char specname[64];
316		char blk[1024];
317		char *cp;
318
319		/*
320		 * Make name for 'c' partition.
321		 */
322		strcpy(specname, s);
323		cp = specname + strlen(specname) - 1;
324		if (!isdigit(*cp))
325			*cp = 'c';
326		cfd = open(specname, O_WRONLY);
327		if (cfd < 0)
328			fatal("%s: %s", specname, strerror(errno));
329		memset(blk, 0, sizeof(blk));
330		*(struct disklabel *)(blk + LABELOFFSET) = *lp;
331		alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
332		for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
333			if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize),
334			    SEEK_SET) == -1)
335				fatal("lseek to badsector area: %s",
336				    strerror(errno));
337			if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
338				fprintf(stderr,
339				    "%s: alternate label %d write: %s\n",
340				    progname, i/2, strerror(errno));
341		}
342		close(cfd);
343	}
344#endif /* vax */
345}
346#endif /* notdef */
347
348void
349usage()
350{
351	fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n");
352	fprintf(stderr, "where fsoptions are:\n");
353	fprintf(stderr, "\t-B LFS segment size\n");
354	fprintf(stderr, "\t-D debug\n");
355	/* fprintf(stderr, "\t-L create LFS file system\n"); */
356	fprintf(stderr,
357	    "\t-N do not create file system, just print out parameters\n");
358	fprintf(stderr, "\t-b block size\n");
359	fprintf(stderr, "\t-f frag size\n");
360	fprintf(stderr, "\t-m minimum free space %%\n");
361	fprintf(stderr, "\t-s file system size (sectors)\n");
362	exit(1);
363}
364