[unix-history] / usr / src / sbin / newlfs / newfs.c

/*-
 * Copyright (c) 1989, 1992 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989, 1992 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)newfs.c	5.6 (Berkeley) %G%";
#endif /* not lint */

/*
 * newfs: friendly front end to mkfs
 */
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/stat.h>
#include <sys/ioctl.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 <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <paths.h>
#include "config.h"
#include "extern.h"

#define	COMPAT			/* allow non-labeled disks */

int	mfs;			/* run as the memory based filesystem */
int	Nflag;			/* run without writing file system */
int	fssize;			/* file system size */
int	ntracks;		/* # tracks/cylinder */
int	nsectors;		/* # sectors/track */
int	nphyssectors;		/* # sectors/track including spares */
int	secpercyl;		/* sectors per cylinder */
int	trackspares = -1;	/* spare sectors per track */
int	cylspares = -1;		/* spare sectors per cylinder */
int	sectorsize;		/* bytes/sector */
#ifdef tahoe
int	realsectorsize;		/* bytes/sector in hardware */
#endif
int	rpm;			/* revolutions/minute of drive */
int	interleave;		/* hardware sector interleave */
int	trackskew = -1;		/* sector 0 skew, per track */
int	headswitch;		/* head switch time, usec */
int	trackseek;		/* track-to-track seek, usec */
int	fsize = 0;		/* fragment size */
int	bsize = 0;		/* block size */
int	cpg = DESCPG;		/* cylinders/cylinder group */
int	cpgflg;			/* cylinders/cylinder group flag was given */
int	minfree = MINFREE;	/* free space threshold */
int	opt = DEFAULTOPT;	/* optimization preference (space or time) */
int	density;		/* number of bytes per inode */
int	maxcontig = MAXCONTIG;	/* max contiguous blocks to allocate */
int	rotdelay = ROTDELAY;	/* rotational delay between blocks */
int	maxbpg;			/* maximum blocks per file in a cyl group */
int	nrpos = NRPOS;		/* # of distinguished rotational positions */
int	bbsize = BBSIZE;	/* boot block size */
int	sbsize = SBSIZE;	/* superblock size */
int	mntflags;		/* flags to be passed to mount */
u_long	memleft;		/* virtual memory available */
caddr_t	membase;		/* start address of memory based filesystem */
#ifdef COMPAT
char	*disktype;
int	unlabeled;
#endif

char	device[MAXPATHLEN];
char	*progname, *special;

static struct disklabel *getdisklabel __P((char *, int));
static struct disklabel *debug_readlabel __P((int));
static void rewritelabel __P((char *, int, struct disklabel *));
static void usage __P((void));

int
main(argc, argv)
	int argc;
	char *argv[];
{
	register int ch;
	register struct partition *pp;
	register struct disklabel *lp;
	struct partition oldpartition;
	struct stat st;
	int debug, lfs, fsi, fso, segsize;
	char *cp, *opstring;

	if (progname = rindex(*argv, '/'))
		++progname;
	else
		progname = *argv;

	if (strstr(progname, "mfs")) {
		mfs = 1;
		Nflag++;
	}

	/* -F is mfs only and MUST come first! */
	opstring = "F:B:DLNS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
	if (!mfs)
		opstring += 2;

	debug = lfs = segsize = 0;
	while ((ch = getopt(argc, argv, opstring)) != EOF)
		switch(ch) {
		case 'B':	/* LFS segment size */
			if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE)
				fatal("%s: bad segment size", optarg);
			break;
		case 'D':
			debug = 1;
			break;
		case 'F':
			if ((mntflags = atoi(optarg)) == 0)
				fatal("%s: bad mount flags", optarg);
			break;
		case 'L':	/* Create lfs */
			lfs = 1;
			break;
		case 'N':
			Nflag++;
			break;
		case 'S':
			if ((sectorsize = atoi(optarg)) <= 0)
				fatal("%s: bad sector size", optarg);
			break;
#ifdef COMPAT
		case 'T':
			disktype = optarg;
			break;
#endif
		case 'a':
			if ((maxcontig = atoi(optarg)) <= 0)
				fatal("%s: bad max contiguous blocks\n",
				    optarg);
			break;
		case 'b':	/* used for LFS */
			if ((bsize = atoi(optarg)) < MINBSIZE)
				fatal("%s: bad block size", optarg);
			break;
		case 'c':
			if ((cpg = atoi(optarg)) <= 0)
				fatal("%s: bad cylinders/group", optarg);
			cpgflg++;
			break;
		case 'd':
			if ((rotdelay = atoi(optarg)) < 0)
				fatal("%s: bad rotational delay\n", optarg);
			break;
		case 'e':
			if ((maxbpg = atoi(optarg)) <= 0)
				fatal("%s: bad blocks per file in a cyl group\n",
				    optarg);
			break;
		case 'f':
			if ((fsize = atoi(optarg)) <= 0)
				fatal("%s: bad frag size", optarg);
			break;
		case 'i':
			if ((density = atoi(optarg)) <= 0)
				fatal("%s: bad bytes per inode\n", optarg);
			break;
		case 'k':
			if ((trackskew = atoi(optarg)) < 0)
				fatal("%s: bad track skew", optarg);
			break;
		case 'l':
			if ((interleave = atoi(optarg)) <= 0)
				fatal("%s: bad interleave", optarg);
			break;
		case 'm':		/* used for LFS */
			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
				fatal("%s: bad free space %%\n", optarg);
			break;
		case 'n':
			if ((nrpos = atoi(optarg)) <= 0)
				fatal("%s: bad rotational layout count\n",
				    optarg);
			break;
		case 'o':
			if (strcmp(optarg, "space") == 0)
				opt = FS_OPTSPACE;
			else if (strcmp(optarg, "time") == 0)
				opt = FS_OPTTIME;
			else
				fatal("%s: bad optimization preference %s",
				    optarg, "(options are `space' or `time')");
			break;
		case 'p':
			if ((trackspares = atoi(optarg)) < 0)
				fatal("%s: bad spare sectors per track",
				    optarg);
			break;
		case 'r':
			if ((rpm = atoi(optarg)) <= 0)
				fatal("%s: bad revs/minute\n", optarg);
			break;
		case 's':	/* used for LFS */
			if ((fssize = atoi(optarg)) <= 0)
				fatal("%s: bad file system size", optarg);
			break;
		case 't':
			if ((ntracks = atoi(optarg)) <= 0)
				fatal("%s: bad total tracks", optarg);
			break;
		case 'u':
			if ((nsectors = atoi(optarg)) <= 0)
				fatal("%s: bad sectors/track", optarg);
			break;
		case 'x':
			if ((cylspares = atoi(optarg)) < 0)
				fatal("%s: bad spare sectors per cylinder",
				    optarg);
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc != 2 && (mfs || argc != 1))
		usage();

	/*
	 * If the -N flag isn't specified, open the output file.  If no path
	 * prefix, try /dev/r%s and then /dev/%s.
	 */
	special = argv[0];
	if (index(special, '/') == NULL) {
		(void)sprintf(device, "%sr%s", _PATH_DEV, special);
		if (stat(device, &st) == -1)
			(void)sprintf(device, "%s%s", _PATH_DEV, special);
		special = device;
	}
	if (!Nflag) {
		fso = open(special,
		    (debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE);
		if (fso < 0)
			fatal("%s: %s", special, strerror(errno));
	} else
		fso = -1;

	/* Open the input file. */
	fsi = open(special, O_RDONLY);
	if (fsi < 0)
		fatal("%s: %s", special, strerror(errno));
	if (fstat(fsi, &st) < 0)
		fatal("%s: %s", special, strerror(errno));

	if (!debug && !mfs && !S_ISCHR(st.st_mode))
		(void)printf("%s: %s: not a character-special device\n",
		    progname, special);
	cp = index(argv[0], '\0') - 1;
	if (!debug && (cp == 0 || (*cp < 'a' || *cp > 'h') && !isdigit(*cp)))
		fatal("%s: can't figure out file system partition", argv[0]);

#ifdef COMPAT
	if (!mfs && disktype == NULL)
		disktype = argv[1];
#endif
	if (debug)
		lp = debug_readlabel(fsi);
	else
		lp = getdisklabel(special, fsi);

	if (isdigit(*cp))
		pp = &lp->d_partitions[0];
	else
		pp = &lp->d_partitions[*cp - 'a'];
	if (pp->p_size == 0)
		fatal("%s: `%c' partition is unavailable", argv[0], *cp);

	/* If we're making a LFS, we break out here */
	exit(make_lfs(fso, lp, pp, minfree, bsize, segsize));
}

#ifdef COMPAT
char lmsg[] = "%s: can't read disk label; disk type must be specified";
#else
char lmsg[] = "%s: can't read disk label";
#endif

static struct disklabel *
getdisklabel(s, fd)
	char *s;
	int fd;
{
	static struct disklabel lab;

	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
#ifdef COMPAT
		if (disktype) {
			struct disklabel *lp, *getdiskbyname();

			unlabeled++;
			lp = getdiskbyname(disktype);
			if (lp == NULL)
				fatal("%s: unknown disk type", disktype);
			return (lp);
		}
#endif
		(void)fprintf(stderr,
		    "%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
		fatal(lmsg, s);
	}
	return (&lab);
}


static struct disklabel *
debug_readlabel(fd)
	int fd;
{
	static struct disklabel lab;
	int n;

	if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
		fatal("unable to read disk label: %s", strerror(errno));
	else if (n < sizeof(struct disklabel))
		fatal("short read of disklabel: %d of %d bytes", n,
			sizeof(struct disklabel));
	return(&lab);
}

static void
rewritelabel(s, fd, lp)
	char *s;
	int fd;
	register struct disklabel *lp;
{
#ifdef COMPAT
	if (unlabeled)
		return;
#endif
	lp->d_checksum = 0;
	lp->d_checksum = dkcksum(lp);
	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
		(void)fprintf(stderr,
		    "%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
		fatal("%s: can't rewrite disk label", s);
	}
#if vax
	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
		register i;
		int cfd;
		daddr_t alt;
		char specname[64];
		char blk[1024];
		char *cp;

		/*
		 * Make name for 'c' partition.
		 */
		strcpy(specname, s);
		cp = specname + strlen(specname) - 1;
		if (!isdigit(*cp))
			*cp = 'c';
		cfd = open(specname, O_WRONLY);
		if (cfd < 0)
			fatal("%s: %s", specname, strerror(errno));
		bzero(blk, sizeof(blk));
		*(struct disklabel *)(blk + LABELOFFSET) = *lp;
		alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
		for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
			if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize,
			    L_SET) == -1)
				fatal("lseek to badsector area: %s",
				    strerror(errno));
			if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
				fprintf(stderr,
				    "%s: alternate label %d write: %s\n",
				    progname, i/2, strerror(errno));
		}
		close(cfd);
	}
#endif
}

void
usage()
{
	if (mfs) {
		fprintf(stderr,
		    "usage: mfs [ -fsoptions ] special-device mount-point\n");
	} else
		fprintf(stderr,
		    "usage: newfs [ -fsoptions ] special-device%s\n",
#ifdef COMPAT
		    " [device-type]");
#else
		    "");
#endif
	fprintf(stderr, "where fsoptions are:\n");
	fprintf(stderr, "\t-B LFS segment size\n");
	fprintf(stderr, "\t-D debug\n");
	fprintf(stderr, "\t-F mount flags\n");
	fprintf(stderr, "\t-L create LFS file system\n");
	fprintf(stderr,
	    "\t-N do not create file system, just print out parameters\n");
	fprintf(stderr, "\t-S sector size\n");
#ifdef COMPAT
	fprintf(stderr, "\t-T disktype\n");
#endif
	fprintf(stderr, "\t-a maximum contiguous blocks\n");
	fprintf(stderr, "\t-b block size\n");
	fprintf(stderr, "\t-c cylinders/group\n");
	fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
	fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
	fprintf(stderr, "\t-f frag size\n");
	fprintf(stderr, "\t-i number of bytes per inode\n");
	fprintf(stderr, "\t-k sector 0 skew, per track\n");
	fprintf(stderr, "\t-l hardware sector interleave\n");
	fprintf(stderr, "\t-m minimum free space %%\n");
	fprintf(stderr, "\t-n number of distinguished rotational positions\n");
	fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
	fprintf(stderr, "\t-p spare sectors per track\n");
	fprintf(stderr, "\t-r revolutions/minute\n");
	fprintf(stderr, "\t-s file system size (sectors)\n");
	fprintf(stderr, "\t-t tracks/cylinder\n");
	fprintf(stderr, "\t-u sectors/track\n");
	fprintf(stderr, "\t-x spare sectors per cylinder\n");
	exit(1);
}
Commit	Line	Data
3c62472a KB	1	/*-
3c62472a KB	2	* Copyright (c) 1989, 1992 The Regents of the University of California.
2a5c97d5 KB	3	* All rights reserved.
2a5c97d5 KB	4	*
3c62472a	5	* %sccs.include.redist.c%
2a5c97d5 KB	6	*/
	7
	8	#ifndef lint
3c62472a KB	9	char copyright[] =
	10	"@(#) Copyright (c) 1989, 1992 The Regents of the University of California.\n\
	11	All rights reserved.\n";
2a5c97d5 KB	12	#endif /* not lint */
	13
	14	#ifndef lint
3c62472a	15	static char sccsid[] = "@(#)newfs.c 5.6 (Berkeley) %G%";
2a5c97d5 KB	16	#endif /* not lint */
	17
	18	/*
	19	* newfs: friendly front end to mkfs
	20	*/
	21	#include <sys/param.h>
be25f164	22	#include <sys/ucred.h>
2a5c97d5	23	#include <sys/stat.h>
2a5c97d5 KB	24	#include <sys/ioctl.h>
	25	#include <sys/disklabel.h>
	26	#include <sys/file.h>
	27	#include <sys/mount.h>
	28
5f4034eb KB	29	#include <ufs/ufs/dir.h>
	30	#include <ufs/ufs/dinode.h>
	31	#include <ufs/ffs/fs.h>
	32
2a5c97d5 KB	33	#include <errno.h>
	34	#include <unistd.h>
	35	#include <stdio.h>
	36	#include <stdlib.h>
	37	#include <ctype.h>
	38	#include <string.h>
	39	#include <paths.h>
	40	#include "config.h"
	41	#include "extern.h"
	42
	43	#define COMPAT /* allow non-labeled disks */
	44
	45	int mfs; /* run as the memory based filesystem */
	46	int Nflag; /* run without writing file system */
	47	int fssize; /* file system size */
	48	int ntracks; /* # tracks/cylinder */
	49	int nsectors; /* # sectors/track */
	50	int nphyssectors; /* # sectors/track including spares */
	51	int secpercyl; /* sectors per cylinder */
	52	int trackspares = -1; /* spare sectors per track */
	53	int cylspares = -1; /* spare sectors per cylinder */
	54	int sectorsize; /* bytes/sector */
	55	#ifdef tahoe
	56	int realsectorsize; /* bytes/sector in hardware */
	57	#endif
	58	int rpm; /* revolutions/minute of drive */
	59	int interleave; /* hardware sector interleave */
	60	int trackskew = -1; /* sector 0 skew, per track */
	61	int headswitch; /* head switch time, usec */
	62	int trackseek; /* track-to-track seek, usec */
	63	int fsize = 0; /* fragment size */
	64	int bsize = 0; /* block size */
	65	int cpg = DESCPG; /* cylinders/cylinder group */
	66	int cpgflg; /* cylinders/cylinder group flag was given */
	67	int minfree = MINFREE; /* free space threshold */
	68	int opt = DEFAULTOPT; /* optimization preference (space or time) */
	69	int density; /* number of bytes per inode */
	70	int maxcontig = MAXCONTIG; /* max contiguous blocks to allocate */
	71	int rotdelay = ROTDELAY; /* rotational delay between blocks */
	72	int maxbpg; /* maximum blocks per file in a cyl group */
	73	int nrpos = NRPOS; /* # of distinguished rotational positions */
	74	int bbsize = BBSIZE; /* boot block size */
	75	int sbsize = SBSIZE; /* superblock size */
	76	int mntflags; /* flags to be passed to mount */
	77	u_long memleft; /* virtual memory available */
	78	caddr_t membase; /* start address of memory based filesystem */
	79	#ifdef COMPAT
	80	char *disktype;
	81	int unlabeled;
	82	#endif
	83
	84	char device[MAXPATHLEN];
	85	char progname, special;
	86
	87	static struct disklabel getdisklabel __P((char , int));
	88	static struct disklabel *debug_readlabel __P((int));
	89	static void rewritelabel __P((char , int, struct disklabel ));
	90	static void usage __P((void));
	91
	92	int
	93	main(argc, argv)
	94	int argc;
	95	char *argv[];
	96	{
97	register int ch;
98	register struct partition *pp;
99	register struct disklabel *lp;
100	struct partition oldpartition;
101	struct stat st;
102	int debug, lfs, fsi, fso, segsize;
103	char cp, opstring;
104
105	if (progname = rindex(*argv, '/'))
106	++progname;
107	else
108	progname = *argv;
109
110	if (strstr(progname, "mfs")) {
111	mfs = 1;
112	Nflag++;
113	}
114
115	/* -F is mfs only and MUST come first! */
116	opstring = "F:B:DLNS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
117	if (!mfs)
118	opstring += 2;
119
120	debug = lfs = segsize = 0;
121	while ((ch = getopt(argc, argv, opstring)) != EOF)
122	switch(ch) {
123	case 'B': /* LFS segment size */
124	if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE)
125	fatal("%s: bad segment size", optarg);
126	break;
127	case 'D':
128	debug = 1;
129	break;
130	case 'F':
131	if ((mntflags = atoi(optarg)) == 0)
132	fatal("%s: bad mount flags", optarg);
133	break;
134	case 'L': /* Create lfs */
135	lfs = 1;
136	break;
137	case 'N':
138	Nflag++;
139	break;
140	case 'S':
141	if ((sectorsize = atoi(optarg)) <= 0)
142	fatal("%s: bad sector size", optarg);
143	break;
144	#ifdef COMPAT
145	case 'T':
146	disktype = optarg;
147	break;
148	#endif
149	case 'a':
150	if ((maxcontig = atoi(optarg)) <= 0)
151	fatal("%s: bad max contiguous blocks\n",
152	optarg);
153	break;
154	case 'b': /* used for LFS */
155	if ((bsize = atoi(optarg)) < MINBSIZE)
156	fatal("%s: bad block size", optarg);
157	break;
158	case 'c':
159	if ((cpg = atoi(optarg)) <= 0)
160	fatal("%s: bad cylinders/group", optarg);
161	cpgflg++;
162	break;
163	case 'd':
164	if ((rotdelay = atoi(optarg)) < 0)
165	fatal("%s: bad rotational delay\n", optarg);
166	break;
167	case 'e':
168	if ((maxbpg = atoi(optarg)) <= 0)
169	fatal("%s: bad blocks per file in a cyl group\n",
170	optarg);
171	break;
172	case 'f':
173	if ((fsize = atoi(optarg)) <= 0)
174	fatal("%s: bad frag size", optarg);
175	break;
176	case 'i':
177	if ((density = atoi(optarg)) <= 0)
178	fatal("%s: bad bytes per inode\n", optarg);
179	break;
180	case 'k':
181	if ((trackskew = atoi(optarg)) < 0)
182	fatal("%s: bad track skew", optarg);
183	break;
184	case 'l':
185	if ((interleave = atoi(optarg)) <= 0)
186	fatal("%s: bad interleave", optarg);
187	break;
188	case 'm': /* used for LFS */
189	if ((minfree = atoi(optarg)) < 0 \|\| minfree > 99)
190	fatal("%s: bad free space %%\n", optarg);
191	break;
192	case 'n':
193	if ((nrpos = atoi(optarg)) <= 0)
194	fatal("%s: bad rotational layout count\n",
195	optarg);
196	break;
197	case 'o':
198	if (strcmp(optarg, "space") == 0)
199	opt = FS_OPTSPACE;
200	else if (strcmp(optarg, "time") == 0)
201	opt = FS_OPTTIME;
202	else
203	fatal("%s: bad optimization preference %s",
204	optarg, "(options are `space' or `time')");
205	break;
206	case 'p':
207	if ((trackspares = atoi(optarg)) < 0)
208	fatal("%s: bad spare sectors per track",
209	optarg);
210	break;
211	case 'r':
212	if ((rpm = atoi(optarg)) <= 0)
213	fatal("%s: bad revs/minute\n", optarg);
214	break;
215	case 's': /* used for LFS */
216	if ((fssize = atoi(optarg)) <= 0)
217	fatal("%s: bad file system size", optarg);
218	break;
219	case 't':
220	if ((ntracks = atoi(optarg)) <= 0)
221	fatal("%s: bad total tracks", optarg);
222	break;
223	case 'u':
224	if ((nsectors = atoi(optarg)) <= 0)
225	fatal("%s: bad sectors/track", optarg);
226	break;
227	case 'x':
228	if ((cylspares = atoi(optarg)) < 0)
229	fatal("%s: bad spare sectors per cylinder",
230	optarg);
231	break;
232	case '?':
233	default:
234	usage();
235	}
236	argc -= optind;
237	argv += optind;
238
239	if (argc != 2 && (mfs \|\| argc != 1))
240	usage();
241
242	/*
243	* If the -N flag isn't specified, open the output file. If no path
244	* prefix, try /dev/r%s and then /dev/%s.
245	*/
246	special = argv[0];
247	if (index(special, '/') == NULL) {
248	(void)sprintf(device, "%sr%s", _PATH_DEV, special);
249	if (stat(device, &st) == -1)
250	(void)sprintf(device, "%s%s", _PATH_DEV, special);
251	special = device;
252	}
253	if (!Nflag) {
254	fso = open(special,
255	(debug ? O_CREAT : 0) \| O_WRONLY, DEFFILEMODE);
256	if (fso < 0)
257	fatal("%s: %s", special, strerror(errno));
258	} else
259	fso = -1;
260
261	/* Open the input file. */
262	fsi = open(special, O_RDONLY);
263	if (fsi < 0)
264	fatal("%s: %s", special, strerror(errno));
265	if (fstat(fsi, &st) < 0)
266	fatal("%s: %s", special, strerror(errno));
267
9ef376b4	268	if (!debug && !mfs && !S_ISCHR(st.st_mode))
2a5c97d5 KB	269	(void)printf("%s: %s: not a character-special device\n",
	270	progname, special);
	271	cp = index(argv[0], '\0') - 1;
	272	if (!debug && (cp == 0 \|\| (cp < 'a' \|\| cp > 'h') && !isdigit(*cp)))
	273	fatal("%s: can't figure out file system partition", argv[0]);
	274
	275	#ifdef COMPAT
	276	if (!mfs && disktype == NULL)
	277	disktype = argv[1];
	278	#endif
	279	if (debug)
	280	lp = debug_readlabel(fsi);
	281	else
	282	lp = getdisklabel(special, fsi);
	283
	284	if (isdigit(*cp))
	285	pp = &lp->d_partitions[0];
	286	else
	287	pp = &lp->d_partitions[*cp - 'a'];
	288	if (pp->p_size == 0)
	289	fatal("%s: `%c' partition is unavailable", argv[0], *cp);
	290
	291	/* If we're making a LFS, we break out here */
0f68007b	292	exit(make_lfs(fso, lp, pp, minfree, bsize, segsize));
2a5c97d5 KB	293	}
	294
	295	#ifdef COMPAT
	296	char lmsg[] = "%s: can't read disk label; disk type must be specified";
	297	#else
	298	char lmsg[] = "%s: can't read disk label";
	299	#endif
	300
	301	static struct disklabel *
	302	getdisklabel(s, fd)
	303	char *s;
	304	int fd;
	305	{
	306	static struct disklabel lab;
	307
	308	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
	309	#ifdef COMPAT
	310	if (disktype) {
	311	struct disklabel lp, getdiskbyname();
	312
	313	unlabeled++;
	314	lp = getdiskbyname(disktype);
	315	if (lp == NULL)
	316	fatal("%s: unknown disk type", disktype);
	317	return (lp);
	318	}
	319	#endif
	320	(void)fprintf(stderr,
	321	"%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
	322	fatal(lmsg, s);
	323	}
	324	return (&lab);
	325	}
	326
	327
	328	static struct disklabel *
	329	debug_readlabel(fd)
	330	int fd;
	331	{
	332	static struct disklabel lab;
	333	int n;
	334
	335	if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
	336	fatal("unable to read disk label: %s", strerror(errno));
	337	else if (n < sizeof(struct disklabel))
	338	fatal("short read of disklabel: %d of %d bytes", n,
	339	sizeof(struct disklabel));
	340	return(&lab);
	341	}
	342
	343	static void
	344	rewritelabel(s, fd, lp)
	345	char *s;
	346	int fd;
	347	register struct disklabel *lp;
	348	{
	349	#ifdef COMPAT
	350	if (unlabeled)
	351	return;
	352	#endif
	353	lp->d_checksum = 0;
	354	lp->d_checksum = dkcksum(lp);
	355	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
	356	(void)fprintf(stderr,
357	"%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
358	fatal("%s: can't rewrite disk label", s);
359	}
360	#if vax
361	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
362	register i;
363	int cfd;
364	daddr_t alt;
365	char specname[64];
366	char blk[1024];
367	char *cp;
368
369	/*
370	* Make name for 'c' partition.
371	*/
372	strcpy(specname, s);
373	cp = specname + strlen(specname) - 1;
374	if (!isdigit(*cp))
375	*cp = 'c';
376	cfd = open(specname, O_WRONLY);
377	if (cfd < 0)
378	fatal("%s: %s", specname, strerror(errno));
379	bzero(blk, sizeof(blk));
380	(struct disklabel )(blk + LABELOFFSET) = *lp;
381	alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
382	for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
383	if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize,
384	L_SET) == -1)
385	fatal("lseek to badsector area: %s",
386	strerror(errno));
387	if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
388	fprintf(stderr,
389	"%s: alternate label %d write: %s\n",
390	progname, i/2, strerror(errno));
391	}
392	close(cfd);
393	}
394	#endif
395	}
396
397	void
398	usage()
399	{
400	if (mfs) {
401	fprintf(stderr,
402	"usage: mfs [ -fsoptions ] special-device mount-point\n");
403	} else
404	fprintf(stderr,
405	"usage: newfs [ -fsoptions ] special-device%s\n",
406	#ifdef COMPAT
407	" [device-type]");
408	#else
409	"");
410	#endif
411	fprintf(stderr, "where fsoptions are:\n");
412	fprintf(stderr, "\t-B LFS segment size\n");
413	fprintf(stderr, "\t-D debug\n");
414	fprintf(stderr, "\t-F mount flags\n");
415	fprintf(stderr, "\t-L create LFS file system\n");
416	fprintf(stderr,
417	"\t-N do not create file system, just print out parameters\n");
418	fprintf(stderr, "\t-S sector size\n");
419	#ifdef COMPAT
420	fprintf(stderr, "\t-T disktype\n");
421	#endif
422	fprintf(stderr, "\t-a maximum contiguous blocks\n");
423	fprintf(stderr, "\t-b block size\n");
424	fprintf(stderr, "\t-c cylinders/group\n");
425	fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
426	fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
427	fprintf(stderr, "\t-f frag size\n");
428	fprintf(stderr, "\t-i number of bytes per inode\n");
429	fprintf(stderr, "\t-k sector 0 skew, per track\n");
430	fprintf(stderr, "\t-l hardware sector interleave\n");
431	fprintf(stderr, "\t-m minimum free space %%\n");
432	fprintf(stderr, "\t-n number of distinguished rotational positions\n");
433	fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
434	fprintf(stderr, "\t-p spare sectors per track\n");
435	fprintf(stderr, "\t-r revolutions/minute\n");
436	fprintf(stderr, "\t-s file system size (sectors)\n");
437	fprintf(stderr, "\t-t tracks/cylinder\n");
438	fprintf(stderr, "\t-u sectors/track\n");
439	fprintf(stderr, "\t-x spare sectors per cylinder\n");
440	exit(1);
441	}