[unix-history] / usr / src / bin / df / df.c

/*
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)df.c	5.16 (Berkeley) %G%";
#endif /* not lint */

/*
 * df
 */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/file.h>
#include <stdio.h>
#include <strings.h>
#include <unistd.h>

char	*getmntpt();
int	iflag, kflag, nflag;
#ifdef COMPAT_43
int	oflag;
#endif /* COMPAT_43 */

main(argc, argv)
	int argc;
	char **argv;
{
	extern int errno, optind;
	int err, ch, i;
	long width, maxwidth, mntsize, getmntinfo();
	char *mntpt, *mktemp();
	struct stat stbuf;
	struct statfs statfsbuf, *mntbuf;
	struct ufs_args mdev;

	while ((ch = getopt(argc, argv, "ikon")) != EOF)
		switch(ch) {
		case 'i':
			iflag = 1;
			break;
		case 'k':
			kflag = 1;
			break;
		case 'n':
			nflag = 1;
			break;
#ifdef COMPAT_43
		case 'o':
			oflag = 1;
			break;
#endif /* COMPAT_43 */
		case '?':
		default:
			fprintf(stderr,
			    "usage: df [-ikn] [file | file_system ...]\n");
			exit(1);
		}
	argc -= optind;
	argv += optind;

	mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
	maxwidth = 0;
	for (i = 0; i < mntsize; i++) {
		width = strlen(mntbuf[i].f_mntfromname);
		if (width > maxwidth)
			maxwidth = width;
	}
#ifdef COMPAT_43
	if (oflag) {
		olddf(argv, maxwidth);
		exit(0);
	}
#endif /* COMPAT_43 */
	if (!*argv) {
		mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT));
		for (i = 0; i < mntsize; i++)
			prtstat(&mntbuf[i], maxwidth);
		exit(0);
	}
	for (; *argv; argv++) {
		if (stat(*argv, &stbuf) < 0) {
			err = errno;
			if ((mntpt = getmntpt(*argv)) == 0) {
				fprintf(stderr, "df: %s: %s\n", *argv,
				    strerror(err));
				continue;
			}
		} else if ((stbuf.st_mode & S_IFMT) == S_IFBLK) {
			if ((mntpt = getmntpt(*argv)) == 0)
				mntpt = mktemp("/tmp/df.XXXXXX");
				mdev.fspec = *argv;
				if (!mkdir(mntpt) &&
				    !mount(MOUNT_UFS, mntpt, M_RDONLY, &mdev) &&
				    !statfs(mntpt, &statfsbuf)) {
					statfsbuf.f_mntonname[0] = '\0';
					prtstat(&statfsbuf, maxwidth);
				} else
					fprintf(stderr, "df: %s: %s\n",
					    *argv, strerror(errno));
				(void)unmount(mntpt, MNT_NOFORCE);
				(void)rmdir(mntpt);
				continue;
		} else
			mntpt = *argv;
		/*
		 * Statfs does not take a `wait' flag, so we cannot
		 * implement nflag here.
		 */
		if (statfs(mntpt, &statfsbuf) < 0) {
			fprintf(stderr,
			    "df: %s: %s\n", mntpt, strerror(errno));
			continue;
		}
		if (argc == 1)
			maxwidth = strlen(statfsbuf.f_mntfromname) + 1;
		prtstat(&statfsbuf, maxwidth);
	}
	exit(0);
}

char *
getmntpt(name)
	char *name;
{
	long mntsize, i;
	struct statfs *mntbuf;

	mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT));
	for (i = 0; i < mntsize; i++) {
		if (!strcmp(mntbuf[i].f_mntfromname, name))
			return (mntbuf[i].f_mntonname);
	}
	return (0);
}

/*
 * Print out status about a filesystem.
 */
prtstat(sfsp, maxwidth)
	register struct statfs *sfsp;
	long maxwidth;
{
	long used, availblks, inodes;
	static int timesthrough;

	if (maxwidth < 11)
		maxwidth = 11;
	if (++timesthrough == 1) {
		printf("%-*.*s%s    used   avail capacity",
		    maxwidth, maxwidth, "Filesystem",
		    kflag ? "  kbytes" : "512-blks");
		if (iflag)
			printf(" iused   ifree  %%iused");
		printf("  Mounted on\n");
	}
	printf("%-*.*s", maxwidth, maxwidth, sfsp->f_mntfromname);
	used = sfsp->f_blocks - sfsp->f_bfree;
	availblks = sfsp->f_bavail + used;
	printf("%8ld%8ld%8ld",
	    sfsp->f_blocks * sfsp->f_fsize / (kflag ? 1024 : 512),
	    used * sfsp->f_fsize / (kflag ? 1024 : 512),
	    sfsp->f_bavail * sfsp->f_fsize / (kflag ? 1024 : 512));
	printf("%6.0f%%",
	    availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
	if (iflag) {
		inodes = sfsp->f_files;
		used = inodes - sfsp->f_ffree;
		printf("%8ld%8ld%6.0f%% ", used, sfsp->f_ffree,
		   inodes == 0 ? 100.0 : (double)used / (double)inodes * 100.0);
	} else 
		printf("  ");
	printf("  %s\n", sfsp->f_mntonname);
}

#ifdef COMPAT_43
/*
 * This code constitutes the old df code for extracting
 * information from filesystem superblocks.
 */
#include <ufs/fs.h>
#include <errno.h>
#include <fstab.h>

char	root[MAXPATHLEN];

union {
	struct fs iu_fs;
	char dummy[SBSIZE];
} sb;
#define sblock sb.iu_fs

int	fi;
char	*strcpy();

olddf(argv, maxwidth)
	char *argv[];
	long maxwidth;
{
	struct fstab *fsp;

	sync();
	if (!*argv) {
		if (setfsent() == 0)
			perror(_PATH_FSTAB), exit(1);
		while (fsp = getfsent()) {
			if (strcmp(fsp->fs_type, FSTAB_RW) &&
			    strcmp(fsp->fs_type, FSTAB_RO) &&
			    strcmp(fsp->fs_type, FSTAB_RQ))
				continue;
			if (root[0] == 0)
				(void) strcpy(root, fsp->fs_spec);
			dfree(fsp->fs_spec, 1, maxwidth);
		}
		(void)endfsent();
		exit(0);
	}
	while (*argv)
		dfree(*argv++, 0, maxwidth);
	exit(0);
}

dfree(file, infsent, maxwidth)
	char *file;
	int infsent;
	long maxwidth;
{
	extern int errno;
	struct stat stbuf;
	struct statfs statfsbuf;
	register struct statfs *sfsp;
	struct fstab *fsp;
	char *mntpt;

	if (stat(file, &stbuf) == 0 &&
	    (stbuf.st_mode&S_IFMT) != S_IFCHR &&
	    (stbuf.st_mode&S_IFMT) != S_IFBLK) {
		if (infsent) {
			fprintf(stderr, "df: %s: screwy fstab entry\n", file);
			return;
		}
		(void)setfsent();
		while (fsp = getfsent()) {
			struct stat stb;

			if (stat(fsp->fs_spec, &stb) == 0 &&
			    stb.st_rdev == stbuf.st_dev) {
				file = fsp->fs_spec;
				(void)endfsent();
				goto found;
			}
		}
		(void)endfsent();
		fprintf(stderr, "df: %s: mounted on unknown device\n", file);
		return;
	}
found:
	if ((fi = open(file, O_RDONLY)) < 0) {
		fprintf(stderr, "df: %s: %s\n", file, strerror(errno));
		return;
	}
	if (bread((long)SBOFF, (char *)&sblock, SBSIZE) == 0) {
		(void) close(fi);
		return;
	}
	sfsp = &statfsbuf;
	sfsp->f_type = MOUNT_UFS;
	sfsp->f_flags = 0;
	sfsp->f_fsize = sblock.fs_fsize;
	sfsp->f_bsize = sblock.fs_bsize;
	sfsp->f_blocks = sblock.fs_dsize;
	sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag +
		sblock.fs_cstotal.cs_nffree;
	sfsp->f_bavail = (sblock.fs_dsize * (100 - sblock.fs_minfree) / 100) -
		(sblock.fs_dsize - sfsp->f_bfree);
	if (sfsp->f_bavail < 0)
		sfsp->f_bavail = 0;
	sfsp->f_files =  sblock.fs_ncg * sblock.fs_ipg;
	sfsp->f_ffree = sblock.fs_cstotal.cs_nifree;
	sfsp->f_fsid.val[0] = 0;
	sfsp->f_fsid.val[1] = 0;
	if ((mntpt = getmntpt(file)) == 0)
		mntpt = "";
	bcopy((caddr_t)mntpt, (caddr_t)&sfsp->f_mntonname[0], MNAMELEN);
	bcopy((caddr_t)file, (caddr_t)&sfsp->f_mntfromname[0], MNAMELEN);
	prtstat(sfsp, maxwidth);
	(void) close(fi);
}

long lseek();

bread(off, buf, cnt)
	long off;
	char *buf;
{
	int n;
	extern errno;

	(void) lseek(fi, off, SEEK_SET);
	if ((n=read(fi, buf, cnt)) != cnt) {
		/* probably a dismounted disk if errno == EIO */
		if (errno != EIO) {
			printf("\nread error off = %ld\n", off);
			printf("count = %d; errno = %d\n", n, errno);
		}
		return (0);
	}
	return (1);
}
#endif /* COMPAT_43 */
Commit	Line	Data
bcf1365c	1	/*
704aadd2 KM	2	* Copyright (c) 1980 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
bcf1365c DF	16	*/
	17
	18	#ifndef lint
	19	char copyright[] =
704aadd2	20	"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
bcf1365c	21	All rights reserved.\n";
7e8aa4e0	22	#endif /* not lint */
bcf1365c	23
97dd7000	24	#ifndef lint
b6f929c6	25	static char sccsid[] = "@(#)df.c 5.16 (Berkeley) %G%";
7e8aa4e0	26	#endif /* not lint */
a98f5f82	27
8d335f7d BJ	28	/*
	29	* df
	30	*/
fc2797e7	31	#include <sys/param.h>
1e568652	32	#include <sys/stat.h>
704aadd2	33	#include <sys/mount.h>
fc2797e7 KB	34	#include <sys/file.h>
	35	#include <stdio.h>
	36	#include <strings.h>
	37	#include <unistd.h>
c7b72342	38
1e568652	39	char *getmntpt();
93e6cf82	40	int iflag, kflag, nflag;
704aadd2 KM	41	#ifdef COMPAT_43
	42	int oflag;
	43	#endif /* COMPAT_43 */
c7b72342 BJ	44
c7b72342 BJ	45	main(argc, argv)
a98f5f82 BJ	46	int argc;
a98f5f82 BJ	47	char **argv;
c7b72342	48	{
dbdc06d4	49	extern int errno, optind;
cf537218	50	int err, ch, i;
b6f929c6	51	long width, maxwidth, mntsize, getmntinfo();
fc2797e7	52	char mntpt, mktemp();
1e568652	53	struct stat stbuf;
704aadd2	54	struct statfs statfsbuf, *mntbuf;
439847aa	55	struct ufs_args mdev;
c7b72342	56
93e6cf82	57	while ((ch = getopt(argc, argv, "ikon")) != EOF)
dbdc06d4	58	switch(ch) {
8a7d0cad	59	case 'i':
fc2797e7 KB	60	iflag = 1;
	61	break;
	62	case 'k':
	63	kflag = 1;
8a7d0cad	64	break;
93e6cf82 KM	65	case 'n':
	66	nflag = 1;
	67	break;
704aadd2 KM	68	#ifdef COMPAT_43
704aadd2 KM	69	case 'o':
fc2797e7	70	oflag = 1;
704aadd2 KM	71	break;
704aadd2 KM	72	#endif /* COMPAT_43 */
dbdc06d4	73	case '?':
8a7d0cad	74	default:
fc2797e7	75	fprintf(stderr,
93e6cf82	76	"usage: df [-ikn] [file \| file_system ...]\n");
dbdc06d4	77	exit(1);
8a7d0cad	78	}
dbdc06d4 KB	79	argc -= optind;
	80	argv += optind;
	81
b6f929c6 KM	82	mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
	83	maxwidth = 0;
	84	for (i = 0; i < mntsize; i++) {
	85	width = strlen(mntbuf[i].f_mntfromname);
	86	if (width > maxwidth)
	87	maxwidth = width;
	88	}
704aadd2 KM	89	#ifdef COMPAT_43
704aadd2 KM	90	if (oflag) {
b6f929c6	91	olddf(argv, maxwidth);
704aadd2 KM	92	exit(0);
	93	}
	94	#endif /* COMPAT_43 */
	95	if (!*argv) {
93e6cf82	96	mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT));
704aadd2	97	for (i = 0; i < mntsize; i++)
b6f929c6	98	prtstat(&mntbuf[i], maxwidth);
704aadd2 KM	99	exit(0);
	100	}
	101	for (; *argv; argv++) {
1e568652	102	if (stat(*argv, &stbuf) < 0) {
cf537218 KM	103	err = errno;
cf537218 KM	104	if ((mntpt = getmntpt(*argv)) == 0) {
fc2797e7 KB	105	fprintf(stderr, "df: %s: %s\n", *argv,
fc2797e7 KB	106	strerror(err));
1e568652	107	continue;
cf537218	108	}
1e568652 KM	109	} else if ((stbuf.st_mode & S_IFMT) == S_IFBLK) {
1e568652 KM	110	if ((mntpt = getmntpt(*argv)) == 0)
93e6cf82	111	mntpt = mktemp("/tmp/df.XXXXXX");
439847aa KM	112	mdev.fspec = *argv;
	113	if (!mkdir(mntpt) &&
	114	!mount(MOUNT_UFS, mntpt, M_RDONLY, &mdev) &&
	115	!statfs(mntpt, &statfsbuf)) {
	116	statfsbuf.f_mntonname[0] = '\0';
b6f929c6	117	prtstat(&statfsbuf, maxwidth);
fc2797e7 KB	118	} else
	119	fprintf(stderr, "df: %s: %s\n",
	120	*argv, strerror(errno));
adc92dc2	121	(void)unmount(mntpt, MNT_NOFORCE);
fc2797e7	122	(void)rmdir(mntpt);
1e568652 KM	123	continue;
	124	} else
	125	mntpt = *argv;
93e6cf82 KM	126	/*
	127	* Statfs does not take a `wait' flag, so we cannot
	128	* implement nflag here.
	129	*/
1e568652	130	if (statfs(mntpt, &statfsbuf) < 0) {
fc2797e7 KB	131	fprintf(stderr,
fc2797e7 KB	132	"df: %s: %s\n", mntpt, strerror(errno));
704aadd2 KM	133	continue;
704aadd2 KM	134	}
b6f929c6 KM	135	if (argc == 1)
	136	maxwidth = strlen(statfsbuf.f_mntfromname) + 1;
	137	prtstat(&statfsbuf, maxwidth);
704aadd2 KM	138	}
	139	exit(0);
	140	}
	141
1e568652 KM	142	char *
	143	getmntpt(name)
	144	char *name;
	145	{
	146	long mntsize, i;
	147	struct statfs *mntbuf;
	148
93e6cf82	149	mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT));
1e568652 KM	150	for (i = 0; i < mntsize; i++) {
	151	if (!strcmp(mntbuf[i].f_mntfromname, name))
	152	return (mntbuf[i].f_mntonname);
	153	}
	154	return (0);
	155	}
	156
704aadd2 KM	157	/*
	158	* Print out status about a filesystem.
	159	*/
b6f929c6	160	prtstat(sfsp, maxwidth)
704aadd2	161	register struct statfs *sfsp;
b6f929c6	162	long maxwidth;
704aadd2 KM	163	{
704aadd2 KM	164	long used, availblks, inodes;
b6f929c6	165	static int timesthrough;
704aadd2	166
b6f929c6 KM	167	if (maxwidth < 11)
	168	maxwidth = 11;
	169	if (++timesthrough == 1) {
	170	printf("%-.s%s used avail capacity",
	171	maxwidth, maxwidth, "Filesystem",
	172	kflag ? " kbytes" : "512-blks");
	173	if (iflag)
	174	printf(" iused ifree %%iused");
	175	printf(" Mounted on\n");
	176	}
	177	printf("%-.s", maxwidth, maxwidth, sfsp->f_mntfromname);
704aadd2 KM	178	used = sfsp->f_blocks - sfsp->f_bfree;
704aadd2 KM	179	availblks = sfsp->f_bavail + used;
fc2797e7 KB	180	printf("%8ld%8ld%8ld",
	181	sfsp->f_blocks * sfsp->f_fsize / (kflag ? 1024 : 512),
	182	used * sfsp->f_fsize / (kflag ? 1024 : 512),
	183	sfsp->f_bavail * sfsp->f_fsize / (kflag ? 1024 : 512));
704aadd2 KM	184	printf("%6.0f%%",
	185	availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
	186	if (iflag) {
	187	inodes = sfsp->f_files;
	188	used = inodes - sfsp->f_ffree;
	189	printf("%8ld%8ld%6.0f%% ", used, sfsp->f_ffree,
	190	inodes == 0 ? 100.0 : (double)used / (double)inodes * 100.0);
	191	} else
	192	printf(" ");
	193	printf(" %s\n", sfsp->f_mntonname);
	194	}
	195
	196	#ifdef COMPAT_43
	197	/*
	198	* This code constitutes the old df code for extracting
	199	* information from filesystem superblocks.
	200	*/
704aadd2	201	#include <ufs/fs.h>
704aadd2 KM	202	#include <errno.h>
704aadd2 KM	203	#include <fstab.h>
704aadd2	204
fc2797e7	205	char root[MAXPATHLEN];
704aadd2 KM	206
	207	union {
	208	struct fs iu_fs;
	209	char dummy[SBSIZE];
	210	} sb;
	211	#define sblock sb.iu_fs
	212
	213	int fi;
	214	char *strcpy();
	215
b6f929c6	216	olddf(argv, maxwidth)
704aadd2	217	char *argv[];
b6f929c6	218	long maxwidth;
704aadd2 KM	219	{
704aadd2 KM	220	struct fstab *fsp;
704aadd2	221
dda19894	222	sync();
dbdc06d4	223	if (!*argv) {
8d335f7d	224	if (setfsent() == 0)
3b72df1c	225	perror(_PATH_FSTAB), exit(1);
a98f5f82	226	while (fsp = getfsent()) {
1f65a82f	227	if (strcmp(fsp->fs_type, FSTAB_RW) &&
351ef297 SL	228	strcmp(fsp->fs_type, FSTAB_RO) &&
351ef297 SL	229	strcmp(fsp->fs_type, FSTAB_RQ))
f0861f40	230	continue;
c7b72342	231	if (root[0] == 0)
f4d092e2	232	(void) strcpy(root, fsp->fs_spec);
b6f929c6	233	dfree(fsp->fs_spec, 1, maxwidth);
c7b72342	234	}
6c5c8ac3	235	(void)endfsent();
c7b72342 BJ	236	exit(0);
c7b72342 BJ	237	}
dbdc06d4	238	while (*argv)
b6f929c6	239	dfree(*argv++, 0, maxwidth);
704aadd2	240	exit(0);
c7b72342 BJ	241	}
c7b72342 BJ	242
b6f929c6	243	dfree(file, infsent, maxwidth)
a98f5f82 BJ	244	char *file;
a98f5f82 BJ	245	int infsent;
b6f929c6	246	long maxwidth;
c7b72342	247	{
dbdc06d4	248	extern int errno;
a98f5f82	249	struct stat stbuf;
704aadd2 KM	250	struct statfs statfsbuf;
704aadd2 KM	251	register struct statfs *sfsp;
a98f5f82	252	struct fstab *fsp;
fc2797e7	253	char *mntpt;
a98f5f82 BJ	254
	255	if (stat(file, &stbuf) == 0 &&
	256	(stbuf.st_mode&S_IFMT) != S_IFCHR &&
	257	(stbuf.st_mode&S_IFMT) != S_IFBLK) {
	258	if (infsent) {
fc2797e7	259	fprintf(stderr, "df: %s: screwy fstab entry\n", file);
8d335f7d BJ	260	return;
8d335f7d BJ	261	}
6c5c8ac3	262	(void)setfsent();
a98f5f82 BJ	263	while (fsp = getfsent()) {
	264	struct stat stb;
	265
	266	if (stat(fsp->fs_spec, &stb) == 0 &&
	267	stb.st_rdev == stbuf.st_dev) {
	268	file = fsp->fs_spec;
6c5c8ac3	269	(void)endfsent();
a98f5f82 BJ	270	goto found;
	271	}
	272	}
6c5c8ac3	273	(void)endfsent();
fc2797e7	274	fprintf(stderr, "df: %s: mounted on unknown device\n", file);
a98f5f82	275	return;
8d335f7d	276	}
a98f5f82	277	found:
fc2797e7	278	if ((fi = open(file, O_RDONLY)) < 0) {
dbdc06d4	279	fprintf(stderr, "df: %s: %s\n", file, strerror(errno));
c7b72342 BJ	280	return;
c7b72342 BJ	281	}
6c5c8ac3	282	if (bread((long)SBOFF, (char *)&sblock, SBSIZE) == 0) {
f5064bf4 RC	283	(void) close(fi);
	284	return;
	285	}
704aadd2 KM	286	sfsp = &statfsbuf;
	287	sfsp->f_type = MOUNT_UFS;
	288	sfsp->f_flags = 0;
	289	sfsp->f_fsize = sblock.fs_fsize;
	290	sfsp->f_bsize = sblock.fs_bsize;
	291	sfsp->f_blocks = sblock.fs_dsize;
	292	sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag +
	293	sblock.fs_cstotal.cs_nffree;
	294	sfsp->f_bavail = (sblock.fs_dsize * (100 - sblock.fs_minfree) / 100) -
	295	(sblock.fs_dsize - sfsp->f_bfree);
	296	if (sfsp->f_bavail < 0)
	297	sfsp->f_bavail = 0;
	298	sfsp->f_files = sblock.fs_ncg * sblock.fs_ipg;
	299	sfsp->f_ffree = sblock.fs_cstotal.cs_nifree;
	300	sfsp->f_fsid.val[0] = 0;
	301	sfsp->f_fsid.val[1] = 0;
1e568652 KM	302	if ((mntpt = getmntpt(file)) == 0)
	303	mntpt = "";
	304	bcopy((caddr_t)mntpt, (caddr_t)&sfsp->f_mntonname[0], MNAMELEN);
704aadd2	305	bcopy((caddr_t)file, (caddr_t)&sfsp->f_mntfromname[0], MNAMELEN);
b6f929c6	306	prtstat(sfsp, maxwidth);
f4d092e2	307	(void) close(fi);
c7b72342 BJ	308	}
c7b72342 BJ	309
f4d092e2 KM	310	long lseek();
f4d092e2 KM	311
6c5c8ac3 KM	312	bread(off, buf, cnt)
6c5c8ac3 KM	313	long off;
a98f5f82	314	char *buf;
c7b72342 BJ	315	{
	316	int n;
	317	extern errno;
	318
fc2797e7	319	(void) lseek(fi, off, SEEK_SET);
a98f5f82	320	if ((n=read(fi, buf, cnt)) != cnt) {
f5064bf4 RC	321	/* probably a dismounted disk if errno == EIO */
f5064bf4 RC	322	if (errno != EIO) {
6c5c8ac3	323	printf("\nread error off = %ld\n", off);
f5064bf4 RC	324	printf("count = %d; errno = %d\n", n, errno);
	325	}
	326	return (0);
c7b72342	327	}
f5064bf4	328	return (1);
c7b72342	329	}
704aadd2	330	#endif /* COMPAT_43 */