main.c revision 347475 
1/*
2 * Copyright (c) 1980, 1986, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if 0
31#ifndef lint
32static const char copyright[] =
33"@(#) Copyright (c) 1980, 1986, 1993\n\
34	The Regents of the University of California.  All rights reserved.\n";
35#endif /* not lint */
36
37#ifndef lint
38static char sccsid[] = "@(#)main.c	8.6 (Berkeley) 5/14/95";
39#endif /* not lint */
40#endif
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD: stable/11/sbin/fsck_ffs/main.c 347475 2019-05-10 23:46:42Z mckusick $");
43
44#include <sys/param.h>
45#include <sys/file.h>
46#include <sys/mount.h>
47#include <sys/resource.h>
48#include <sys/stat.h>
49#include <sys/sysctl.h>
50#include <sys/uio.h>
51#include <sys/disklabel.h>
52
53#include <ufs/ufs/dinode.h>
54#include <ufs/ffs/fs.h>
55
56#include <err.h>
57#include <errno.h>
58#include <fstab.h>
59#include <grp.h>
60#include <inttypes.h>
61#include <mntopts.h>
62#include <paths.h>
63#include <stdint.h>
64#include <string.h>
65#include <time.h>
66
67#include "fsck.h"
68
69int	restarts;
70
71static void usage(void) __dead2;
72static intmax_t argtoimax(int flag, const char *req, const char *str, int base);
73static int checkfilesys(char *filesys);
74static int chkdoreload(struct statfs *mntp);
75static struct statfs *getmntpt(const char *);
76
77int
78main(int argc, char *argv[])
79{
80	int ch;
81	struct rlimit rlimit;
82	struct itimerval itimerval;
83	int fsret;
84	int ret = 0;
85
86	sync();
87	skipclean = 1;
88	inoopt = 0;
89	while ((ch = getopt(argc, argv, "b:Bc:CdEfFm:npRrSyZz")) != -1) {
90		switch (ch) {
91		case 'b':
92			skipclean = 0;
93			bflag = argtoimax('b', "number", optarg, 10);
94			printf("Alternate super block location: %jd\n", bflag);
95			break;
96
97		case 'B':
98			bkgrdflag = 1;
99			break;
100
101		case 'c':
102			skipclean = 0;
103			cvtlevel = argtoimax('c', "conversion level", optarg,
104			    10);
105			if (cvtlevel < 3)
106				errx(EEXIT, "cannot do level %d conversion",
107				    cvtlevel);
108			break;
109
110		case 'd':
111			debug++;
112			break;
113
114		case 'E':
115			Eflag++;
116			break;
117
118		case 'f':
119			skipclean = 0;
120			break;
121
122		case 'F':
123			bkgrdcheck = 1;
124			break;
125
126		case 'm':
127			lfmode = argtoimax('m', "mode", optarg, 8);
128			if (lfmode &~ 07777)
129				errx(EEXIT, "bad mode to -m: %o", lfmode);
130			printf("** lost+found creation mode %o\n", lfmode);
131			break;
132
133		case 'n':
134			nflag++;
135			yflag = 0;
136			break;
137
138		case 'p':
139			preen++;
140			/*FALLTHROUGH*/
141
142		case 'C':
143			ckclean++;
144			break;
145
146		case 'R':
147			wantrestart = 1;
148			break;
149		case 'r':
150			inoopt++;
151			break;
152
153		case 'S':
154			surrender = 1;
155			break;
156
157		case 'y':
158			yflag++;
159			nflag = 0;
160			break;
161
162		case 'Z':
163			Zflag++;
164			break;
165
166		case 'z':
167			zflag++;
168			break;
169
170		default:
171			usage();
172		}
173	}
174	argc -= optind;
175	argv += optind;
176
177	if (!argc)
178		usage();
179
180	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
181		(void)signal(SIGINT, catch);
182	if (ckclean)
183		(void)signal(SIGQUIT, catchquit);
184	signal(SIGINFO, infohandler);
185	if (bkgrdflag) {
186		signal(SIGALRM, alarmhandler);
187		itimerval.it_interval.tv_sec = 5;
188		itimerval.it_interval.tv_usec = 0;
189		itimerval.it_value.tv_sec = 5;
190		itimerval.it_value.tv_usec = 0;
191		setitimer(ITIMER_REAL, &itimerval, NULL);
192	}
193	/*
194	 * Push up our allowed memory limit so we can cope
195	 * with huge file systems.
196	 */
197	if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
198		rlimit.rlim_cur = rlimit.rlim_max;
199		(void)setrlimit(RLIMIT_DATA, &rlimit);
200	}
201	while (argc > 0) {
202		if ((fsret = checkfilesys(*argv)) == ERESTART)
203			continue;
204		ret |= fsret;
205		argc--;
206		argv++;
207	}
208
209	if (returntosingle)
210		ret = 2;
211	exit(ret);
212}
213
214static intmax_t
215argtoimax(int flag, const char *req, const char *str, int base)
216{
217	char *cp;
218	intmax_t ret;
219
220	ret = strtoimax(str, &cp, base);
221	if (cp == str || *cp)
222		errx(EEXIT, "-%c flag requires a %s", flag, req);
223	return (ret);
224}
225
226/*
227 * Check the specified file system.
228 */
229/* ARGSUSED */
230static int
231checkfilesys(char *filesys)
232{
233	ufs2_daddr_t n_ffree, n_bfree;
234	struct dups *dp;
235	struct statfs *mntp;
236	struct stat snapdir;
237	struct group *grp;
238	struct iovec *iov;
239	char errmsg[255];
240	int ofsmodified;
241	int iovlen;
242	int cylno;
243	intmax_t blks, files;
244	size_t size;
245
246	iov = NULL;
247	iovlen = 0;
248	errmsg[0] = '\0';
249	fsutilinit();
250	fsckinit();
251
252	cdevname = filesys;
253	if (debug && ckclean)
254		pwarn("starting\n");
255	/*
256	 * Make best effort to get the disk name. Check first to see
257	 * if it is listed among the mounted file systems. Failing that
258	 * check to see if it is listed in /etc/fstab.
259	 */
260	mntp = getmntpt(filesys);
261	if (mntp != NULL)
262		filesys = mntp->f_mntfromname;
263	else
264		filesys = blockcheck(filesys);
265	/*
266	 * If -F flag specified, check to see whether a background check
267	 * is possible and needed. If possible and needed, exit with
268	 * status zero. Otherwise exit with status non-zero. A non-zero
269	 * exit status will cause a foreground check to be run.
270	 */
271	sblock_init();
272	if (bkgrdcheck) {
273		if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
274			exit(3);	/* Cannot read superblock */
275		close(fsreadfd);
276		/* Earlier background failed or journaled */
277		if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ))
278			exit(4);
279		if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
280			exit(5);	/* Not running soft updates */
281		size = MIBSIZE;
282		if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
283			exit(6);	/* Lacks kernel support */
284		if ((mntp == NULL && sblock.fs_clean == 1) ||
285		    (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
286			exit(7);	/* Filesystem clean, report it now */
287		exit(0);
288	}
289	if (ckclean && skipclean) {
290		/*
291		 * If file system is gjournaled, check it here.
292		 */
293		if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
294			exit(3);	/* Cannot read superblock */
295		close(fsreadfd);
296		if ((sblock.fs_flags & FS_GJOURNAL) != 0) {
297			//printf("GJournaled file system detected on %s.\n",
298			//    filesys);
299			if (sblock.fs_clean == 1) {
300				pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
301				exit(0);
302			}
303			if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) {
304				gjournal_check(filesys);
305				if (chkdoreload(mntp) == 0)
306					exit(0);
307				exit(4);
308			} else {
309				pfatal(
310			    "UNEXPECTED INCONSISTENCY, CANNOT RUN FAST FSCK\n");
311			}
312		}
313	}
314	/*
315	 * If we are to do a background check:
316	 *	Get the mount point information of the file system
317	 *	create snapshot file
318	 *	return created snapshot file
319	 *	if not found, clear bkgrdflag and proceed with normal fsck
320	 */
321	if (bkgrdflag) {
322		if (mntp == NULL) {
323			bkgrdflag = 0;
324			pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
325		} else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
326			bkgrdflag = 0;
327			pfatal(
328			  "NOT USING SOFT UPDATES, CANNOT RUN IN BACKGROUND\n");
329		} else if ((mntp->f_flags & MNT_RDONLY) != 0) {
330			bkgrdflag = 0;
331			pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
332		} else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
333			if (readsb(0) != 0) {
334				if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ)) {
335					bkgrdflag = 0;
336					pfatal(
337			"UNEXPECTED INCONSISTENCY, CANNOT RUN IN BACKGROUND\n");
338				}
339				if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
340				    skipclean && ckclean) {
341					/*
342					 * file system is clean;
343					 * skip snapshot and report it clean
344					 */
345					pwarn(
346					"FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
347					goto clean;
348				}
349			}
350			close(fsreadfd);
351		}
352		if (bkgrdflag) {
353			snprintf(snapname, sizeof snapname, "%s/.snap",
354			    mntp->f_mntonname);
355			if (stat(snapname, &snapdir) < 0) {
356				if (errno != ENOENT) {
357					bkgrdflag = 0;
358					pfatal(
359	"CANNOT FIND SNAPSHOT DIRECTORY %s: %s, CANNOT RUN IN BACKGROUND\n",
360					    snapname, strerror(errno));
361				} else if ((grp = getgrnam("operator")) == NULL ||
362					   mkdir(snapname, 0770) < 0 ||
363					   chown(snapname, -1, grp->gr_gid) < 0 ||
364					   chmod(snapname, 0770) < 0) {
365					bkgrdflag = 0;
366					pfatal(
367	"CANNOT CREATE SNAPSHOT DIRECTORY %s: %s, CANNOT RUN IN BACKGROUND\n",
368					    snapname, strerror(errno));
369				}
370			} else if (!S_ISDIR(snapdir.st_mode)) {
371				bkgrdflag = 0;
372				pfatal(
373			"%s IS NOT A DIRECTORY, CANNOT RUN IN BACKGROUND\n",
374				    snapname);
375			}
376		}
377		if (bkgrdflag) {
378			snprintf(snapname, sizeof snapname,
379			    "%s/.snap/fsck_snapshot", mntp->f_mntonname);
380			build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
381			build_iovec(&iov, &iovlen, "from", snapname,
382			    (size_t)-1);
383			build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
384			    (size_t)-1);
385			build_iovec(&iov, &iovlen, "errmsg", errmsg,
386			    sizeof(errmsg));
387			build_iovec(&iov, &iovlen, "update", NULL, 0);
388			build_iovec(&iov, &iovlen, "snapshot", NULL, 0);
389
390			while (nmount(iov, iovlen, mntp->f_flags) < 0) {
391				if (errno == EEXIST && unlink(snapname) == 0)
392					continue;
393				bkgrdflag = 0;
394				pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n",
395				    snapname, strerror(errno), errmsg);
396				break;
397			}
398			if (bkgrdflag != 0)
399				filesys = snapname;
400		}
401	}
402
403	switch (setup(filesys)) {
404	case 0:
405		if (preen)
406			pfatal("CAN'T CHECK FILE SYSTEM.");
407		return (0);
408	case -1:
409	clean:
410		pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
411		    sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
412		printf("(%jd frags, %jd blocks, %.1f%% fragmentation)\n",
413		    (intmax_t)sblock.fs_cstotal.cs_nffree,
414		    (intmax_t)sblock.fs_cstotal.cs_nbfree,
415		    sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
416		return (0);
417	}
418	/*
419	 * Determine if we can and should do journal recovery.
420	 */
421	if ((sblock.fs_flags & FS_SUJ) == FS_SUJ) {
422		if ((sblock.fs_flags & FS_NEEDSFSCK) != FS_NEEDSFSCK && skipclean) {
423			if (preen || reply("USE JOURNAL")) {
424				if (suj_check(filesys) == 0) {
425					printf("\n***** FILE SYSTEM MARKED CLEAN *****\n");
426					if (chkdoreload(mntp) == 0)
427						exit(0);
428					exit(4);
429				}
430			}
431			printf("** Skipping journal, falling through to full fsck\n\n");
432		}
433		/*
434		 * Write the superblock so we don't try to recover the
435		 * journal on another pass. If this is the only change
436		 * to the filesystem, we do not want it to be called
437		 * out as modified.
438		 */
439		sblock.fs_mtime = time(NULL);
440		sbdirty();
441		ofsmodified = fsmodified;
442		flush(fswritefd, &sblk);
443		fsmodified = ofsmodified;
444	}
445
446	/*
447	 * Cleared if any questions answered no. Used to decide if
448	 * the superblock should be marked clean.
449	 */
450	resolved = 1;
451	/*
452	 * 1: scan inodes tallying blocks used
453	 */
454	if (preen == 0) {
455		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
456		if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
457			printf("** Root file system\n");
458		printf("** Phase 1 - Check Blocks and Sizes\n");
459	}
460	clock_gettime(CLOCK_REALTIME_PRECISE, &startprog);
461	pass1();
462	IOstats("Pass1");
463
464	/*
465	 * 1b: locate first references to duplicates, if any
466	 */
467	if (duplist) {
468		if (preen || usedsoftdep)
469			pfatal("INTERNAL ERROR: dups with %s%s%s",
470			    preen ? "-p" : "",
471			    (preen && usedsoftdep) ? " and " : "",
472			    usedsoftdep ? "softupdates" : "");
473		printf("** Phase 1b - Rescan For More DUPS\n");
474		pass1b();
475		IOstats("Pass1b");
476	}
477
478	/*
479	 * 2: traverse directories from root to mark all connected directories
480	 */
481	if (preen == 0)
482		printf("** Phase 2 - Check Pathnames\n");
483	pass2();
484	IOstats("Pass2");
485
486	/*
487	 * 3: scan inodes looking for disconnected directories
488	 */
489	if (preen == 0)
490		printf("** Phase 3 - Check Connectivity\n");
491	pass3();
492	IOstats("Pass3");
493
494	/*
495	 * 4: scan inodes looking for disconnected files; check reference counts
496	 */
497	if (preen == 0)
498		printf("** Phase 4 - Check Reference Counts\n");
499	pass4();
500	IOstats("Pass4");
501
502	/*
503	 * 5: check and repair resource counts in cylinder groups
504	 */
505	if (preen == 0)
506		printf("** Phase 5 - Check Cyl groups\n");
507	pass5();
508	IOstats("Pass5");
509
510	/*
511	 * print out summary statistics
512	 */
513	n_ffree = sblock.fs_cstotal.cs_nffree;
514	n_bfree = sblock.fs_cstotal.cs_nbfree;
515	files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
516	blks = n_blks +
517	    sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
518	blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
519	blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
520	blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
521	if (bkgrdflag && (files > 0 || blks > 0)) {
522		countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
523		pwarn("Reclaimed: %ld directories, %jd files, %jd fragments\n",
524		    countdirs, files - countdirs, blks);
525	}
526	pwarn("%ld files, %jd used, %ju free ",
527	    (long)n_files, (intmax_t)n_blks,
528	    (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
529	printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
530	    (uintmax_t)n_ffree, (uintmax_t)n_bfree,
531	    n_ffree * 100.0 / sblock.fs_dsize);
532	if (debug) {
533		if (files < 0)
534			printf("%jd inodes missing\n", -files);
535		if (blks < 0)
536			printf("%jd blocks missing\n", -blks);
537		if (duplist != NULL) {
538			printf("The following duplicate blocks remain:");
539			for (dp = duplist; dp; dp = dp->next)
540				printf(" %jd,", (intmax_t)dp->dup);
541			printf("\n");
542		}
543	}
544	duplist = (struct dups *)0;
545	muldup = (struct dups *)0;
546	inocleanup();
547	if (fsmodified) {
548		sblock.fs_time = time(NULL);
549		sbdirty();
550	}
551	if (cvtlevel && sblk.b_dirty) {
552		/*
553		 * Write out the duplicate super blocks
554		 */
555		for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
556			blwrite(fswritefd, (char *)&sblock,
557			    fsbtodb(&sblock, cgsblock(&sblock, cylno)),
558			    SBLOCKSIZE);
559	}
560	if (rerun)
561		resolved = 0;
562	finalIOstats();
563
564	/*
565	 * Check to see if the file system is mounted read-write.
566	 */
567	if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
568		resolved = 0;
569	ckfini(resolved);
570
571	for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
572		if (inostathead[cylno].il_stat != NULL)
573			free((char *)inostathead[cylno].il_stat);
574	free((char *)inostathead);
575	inostathead = NULL;
576	if (fsmodified && !preen)
577		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
578	if (rerun) {
579		if (wantrestart && (restarts++ < 10) &&
580		    (preen || reply("RESTART")))
581			return (ERESTART);
582		printf("\n***** PLEASE RERUN FSCK *****\n");
583	}
584	if (chkdoreload(mntp) != 0) {
585		if (!fsmodified)
586			return (0);
587		if (!preen)
588			printf("\n***** REBOOT NOW *****\n");
589		sync();
590		return (4);
591	}
592	return (rerun ? ERERUN : 0);
593}
594
595static int
596chkdoreload(struct statfs *mntp)
597{
598	struct iovec *iov;
599	int iovlen;
600	char errmsg[255];
601
602	if (mntp == NULL)
603		return (0);
604
605	iov = NULL;
606	iovlen = 0;
607	errmsg[0] = '\0';
608	/*
609	 * We modified a mounted file system.  Do a mount update on
610	 * it unless it is read-write, so we can continue using it
611	 * as safely as possible.
612	 */
613	if (mntp->f_flags & MNT_RDONLY) {
614		build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
615		build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname,
616		    (size_t)-1);
617		build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
618		    (size_t)-1);
619		build_iovec(&iov, &iovlen, "errmsg", errmsg,
620		    sizeof(errmsg));
621		build_iovec(&iov, &iovlen, "update", NULL, 0);
622		build_iovec(&iov, &iovlen, "reload", NULL, 0);
623		/*
624		 * XX: We need the following line until we clean up
625		 * nmount parsing of root mounts and NFS root mounts.
626		 */
627		build_iovec(&iov, &iovlen, "ro", NULL, 0);
628		if (nmount(iov, iovlen, mntp->f_flags) == 0) {
629			return (0);
630		}
631		pwarn("mount reload of '%s' failed: %s %s\n\n",
632		    mntp->f_mntonname, strerror(errno), errmsg);
633		return (1);
634	}
635	return (0);
636}
637
638/*
639 * Get the mount point information for name.
640 */
641static struct statfs *
642getmntpt(const char *name)
643{
644	struct stat devstat, mntdevstat;
645	char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
646	char *ddevname;
647	struct statfs *mntbuf, *statfsp;
648	int i, mntsize, isdev;
649
650	if (stat(name, &devstat) != 0)
651		return (NULL);
652	if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
653		isdev = 1;
654	else
655		isdev = 0;
656	mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
657	for (i = 0; i < mntsize; i++) {
658		statfsp = &mntbuf[i];
659		ddevname = statfsp->f_mntfromname;
660		if (*ddevname != '/') {
661			if (strlen(_PATH_DEV) + strlen(ddevname) + 1 >
662			    sizeof(statfsp->f_mntfromname))
663				continue;
664			strcpy(device, _PATH_DEV);
665			strcat(device, ddevname);
666			strcpy(statfsp->f_mntfromname, device);
667		}
668		if (isdev == 0) {
669			if (strcmp(name, statfsp->f_mntonname))
670				continue;
671			return (statfsp);
672		}
673		if (stat(ddevname, &mntdevstat) == 0 &&
674		    mntdevstat.st_rdev == devstat.st_rdev)
675			return (statfsp);
676	}
677	statfsp = NULL;
678	return (statfsp);
679}
680
681static void
682usage(void)
683{
684	(void) fprintf(stderr,
685"usage: %s [-BCdEFfnpRrSyZ] [-b block] [-c level] [-m mode] filesystem ...\n",
686	    getprogname());
687	exit(1);
688}
689
690void
691infohandler(int sig __unused)
692{
693	got_siginfo = 1;
694}
695
696void
697alarmhandler(int sig __unused)
698{
699	got_sigalarm = 1;
700}
701