xref: /freebsd/sbin/quotacheck/quotacheck.c (revision 1670a1c2a47d10ecccd001970b859caf93cd3b6e)
1 /*
2  * Copyright (c) 1980, 1990, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Robert Elz at The University of Melbourne.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 4. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #if 0
34 #ifndef lint
35 static const char copyright[] =
36 "@(#) Copyright (c) 1980, 1990, 1993\n\
37 	The Regents of the University of California.  All rights reserved.\n";
38 #endif /* not lint */
39 
40 #ifndef lint
41 static char sccsid[] = "@(#)quotacheck.c	8.3 (Berkeley) 1/29/94";
42 #endif /* not lint */
43 #endif
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
46 
47 /*
48  * Fix up / report on disk quotas & usage
49  */
50 #include <sys/param.h>
51 #include <sys/disklabel.h>
52 #include <sys/mount.h>
53 #include <sys/stat.h>
54 
55 #include <ufs/ufs/dinode.h>
56 #include <ufs/ufs/quota.h>
57 #include <ufs/ffs/fs.h>
58 
59 #include <err.h>
60 #include <errno.h>
61 #include <fcntl.h>
62 #include <fstab.h>
63 #include <grp.h>
64 #include <libutil.h>
65 #include <pwd.h>
66 #include <stdio.h>
67 #include <stdlib.h>
68 #include <string.h>
69 #include <unistd.h>
70 
71 #include "quotacheck.h"
72 
73 char *qfname = QUOTAFILENAME;
74 char *qfextension[] = INITQFNAMES;
75 char *quotagroup = QUOTAGROUP;
76 
77 union {
78 	struct	fs	sblk;
79 	char	dummy[MAXBSIZE];
80 } sb_un;
81 #define	sblock	sb_un.sblk
82 union {
83 	struct	cg	cgblk;
84 	char	dummy[MAXBSIZE];
85 } cg_un;
86 #define	cgblk	cg_un.cgblk
87 long dev_bsize = 1;
88 ino_t maxino;
89 
90 union dinode {
91 	struct ufs1_dinode dp1;
92 	struct ufs2_dinode dp2;
93 };
94 #define	DIP(dp, field) \
95 	((sblock.fs_magic == FS_UFS1_MAGIC) ? \
96 	(dp)->dp1.field : (dp)->dp2.field)
97 
98 #define	HASUSR	1
99 #define	HASGRP	2
100 
101 struct fileusage {
102 	struct	fileusage *fu_next;
103 	u_long	fu_curinodes;
104 	u_long	fu_curblocks;
105 	u_long	fu_id;
106 	char	fu_name[1];
107 	/* actually bigger */
108 };
109 #define FUHASH 1024	/* must be power of two */
110 struct fileusage *fuhead[MAXQUOTAS][FUHASH];
111 
112 int	aflag;			/* all file systems */
113 int	cflag;			/* convert format to 32 or 64 bit size */
114 int	gflag;			/* check group quotas */
115 int	uflag;			/* check user quotas */
116 int	vflag;			/* verbose */
117 int	fi;			/* open disk file descriptor */
118 
119 struct fileusage *
120 	 addid(u_long, int, char *, const char *);
121 void	 bread(ufs2_daddr_t, char *, long);
122 void	 freeinodebuf(void);
123 union dinode *
124 	 getnextinode(ino_t);
125 int	 getquotagid(void);
126 struct fileusage *
127 	 lookup(u_long, int);
128 int	 oneof(char *, char*[], int);
129 void	 printchanges(const char *, int, struct dqblk *, struct fileusage *,
130 	    u_long);
131 void	 setinodebuf(ino_t);
132 int	 update(const char *, struct quotafile *, int);
133 void	 usage(void);
134 
135 int
136 main(int argc, char *argv[])
137 {
138 	struct fstab *fs;
139 	struct passwd *pw;
140 	struct group *gr;
141 	struct quotafile *qfu, *qfg;
142 	int i, argnum, maxrun, errs, ch;
143 	long done = 0;
144 	char *name;
145 
146 	errs = maxrun = 0;
147 	while ((ch = getopt(argc, argv, "ac:guvl:")) != -1) {
148 		switch(ch) {
149 		case 'a':
150 			aflag++;
151 			break;
152 		case 'c':
153 			if (cflag)
154 				usage();
155 			cflag = atoi(optarg);
156 			break;
157 		case 'g':
158 			gflag++;
159 			break;
160 		case 'u':
161 			uflag++;
162 			break;
163 		case 'v':
164 			vflag++;
165 			break;
166 		case 'l':
167 			maxrun = atoi(optarg);
168 			break;
169 		default:
170 			usage();
171 		}
172 	}
173 	argc -= optind;
174 	argv += optind;
175 	if ((argc == 0 && !aflag) || (argc > 0 && aflag))
176 		usage();
177 	if (cflag && cflag != 32 && cflag != 64)
178 		usage();
179 	if (!gflag && !uflag) {
180 		gflag++;
181 		uflag++;
182 	}
183 	if (gflag) {
184 		setgrent();
185 		while ((gr = getgrent()) != NULL)
186 			(void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name,
187 			    NULL);
188 		endgrent();
189 	}
190 	if (uflag) {
191 		setpwent();
192 		while ((pw = getpwent()) != NULL)
193 			(void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name,
194 			    NULL);
195 		endpwent();
196 	}
197 	/*
198 	 * The maxrun (-l) option is now deprecated.
199 	 */
200 	if (maxrun > 0)
201 		warnx("the -l option is now deprecated");
202 	if (aflag)
203 		exit(checkfstab(uflag, gflag));
204 	if (setfsent() == 0)
205 		errx(1, "%s: can't open", FSTAB);
206 	while ((fs = getfsent()) != NULL) {
207 		if (((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
208 		     (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) &&
209 		    (name = blockcheck(fs->fs_spec))) {
210 			done |= 1 << argnum;
211 			qfu = NULL;
212 			if (uflag)
213 				qfu = quota_open(fs, USRQUOTA, O_CREAT|O_RDWR);
214 			qfg = NULL;
215 			if (gflag)
216 				qfg = quota_open(fs, GRPQUOTA, O_CREAT|O_RDWR);
217 			if (qfu == NULL && qfg == NULL)
218 				continue;
219 			errs += chkquota(name, qfu, qfg);
220 			if (qfu)
221 				quota_close(qfu);
222 			if (qfg)
223 				quota_close(qfg);
224 		}
225 	}
226 	endfsent();
227 	for (i = 0; i < argc; i++)
228 		if ((done & (1 << i)) == 0)
229 			fprintf(stderr, "%s not found in %s\n",
230 				argv[i], FSTAB);
231 	exit(errs);
232 }
233 
234 void
235 usage(void)
236 {
237 	(void)fprintf(stderr, "%s\n%s\n",
238 		"usage: quotacheck [-guv] [-c 32 | 64] [-l maxrun] -a",
239 		"       quotacheck [-guv] [-c 32 | 64] filesystem ...");
240 	exit(1);
241 }
242 
243 /*
244  * Possible superblock locations ordered from most to least likely.
245  */
246 static int sblock_try[] = SBLOCKSEARCH;
247 
248 /*
249  * Scan the specified file system to check quota(s) present on it.
250  */
251 int
252 chkquota(char *specname, struct quotafile *qfu, struct quotafile *qfg)
253 {
254 	struct fileusage *fup;
255 	union dinode *dp;
256 	int cg, i, mode, errs = 0;
257 	ino_t ino, inosused, userino = 0, groupino = 0;
258 	dev_t dev, userdev = 0, groupdev = 0;
259 	struct stat sb;
260 	const char *mntpt;
261 	char *cp;
262 
263 	if (qfu != NULL)
264 		mntpt = quota_fsname(qfu);
265 	else if (qfg != NULL)
266 		mntpt = quota_fsname(qfg);
267 	else
268 		errx(1, "null quotafile information passed to chkquota()\n");
269 	if (cflag) {
270 		if (vflag && qfu != NULL)
271 			printf("%s: convert user quota to %d bits\n",
272 			    mntpt, cflag);
273 		if (qfu != NULL && quota_convert(qfu, cflag) < 0) {
274 			if (errno == EBADF)
275 				errx(1,
276 				    "%s: cannot convert an active quota file",
277 				    mntpt);
278 			err(1, "user quota conversion to size %d failed",
279 			    cflag);
280 		}
281 		if (vflag && qfg != NULL)
282 			printf("%s: convert group quota to %d bits\n",
283 			    mntpt, cflag);
284 		if (qfg != NULL && quota_convert(qfg, cflag) < 0) {
285 			if (errno == EBADF)
286 				errx(1,
287 				    "%s: cannot convert an active quota file",
288 				    mntpt);
289 			err(1, "group quota conversion to size %d failed",
290 			    cflag);
291 		}
292 	}
293 	if ((fi = open(specname, O_RDONLY, 0)) < 0) {
294 		warn("%s", specname);
295 		return (1);
296 	}
297 	if ((stat(mntpt, &sb)) < 0) {
298 		warn("%s", mntpt);
299 		return (1);
300 	}
301 	dev = sb.st_dev;
302 	if (vflag) {
303 		(void)printf("*** Checking ");
304 		if (qfu)
305 			(void)printf("user%s", qfg ? " and " : "");
306 		if (qfg)
307 			(void)printf("group");
308 		(void)printf(" quotas for %s (%s)\n", specname, mntpt);
309 	}
310 	if (qfu) {
311 		if (stat(quota_qfname(qfu), &sb) == 0) {
312 			userino = sb.st_ino;
313 			userdev = sb.st_dev;
314 		}
315 	}
316 	if (qfg) {
317 		if (stat(quota_qfname(qfg), &sb) == 0) {
318 			groupino = sb.st_ino;
319 			groupdev = sb.st_dev;
320 		}
321 	}
322 	sync();
323 	dev_bsize = 1;
324 	for (i = 0; sblock_try[i] != -1; i++) {
325 		bread(sblock_try[i], (char *)&sblock, (long)SBLOCKSIZE);
326 		if ((sblock.fs_magic == FS_UFS1_MAGIC ||
327 		     (sblock.fs_magic == FS_UFS2_MAGIC &&
328 		      sblock.fs_sblockloc == sblock_try[i])) &&
329 		    sblock.fs_bsize <= MAXBSIZE &&
330 		    sblock.fs_bsize >= sizeof(struct fs))
331 			break;
332 	}
333 	if (sblock_try[i] == -1) {
334 		warn("Cannot find file system superblock");
335 		return (1);
336 	}
337 	dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
338 	maxino = sblock.fs_ncg * sblock.fs_ipg;
339 	for (cg = 0; cg < sblock.fs_ncg; cg++) {
340 		ino = cg * sblock.fs_ipg;
341 		setinodebuf(ino);
342 		bread(fsbtodb(&sblock, cgtod(&sblock, cg)), (char *)(&cgblk),
343 		    sblock.fs_cgsize);
344 		if (sblock.fs_magic == FS_UFS2_MAGIC)
345 			inosused = cgblk.cg_initediblk;
346 		else
347 			inosused = sblock.fs_ipg;
348 		/*
349 		 * If we are using soft updates, then we can trust the
350 		 * cylinder group inode allocation maps to tell us which
351 		 * inodes are allocated. We will scan the used inode map
352 		 * to find the inodes that are really in use, and then
353 		 * read only those inodes in from disk.
354 		 */
355 		if (sblock.fs_flags & FS_DOSOFTDEP) {
356 			if (!cg_chkmagic(&cgblk))
357 				errx(1, "CG %d: BAD MAGIC NUMBER\n", cg);
358 			cp = &cg_inosused(&cgblk)[(inosused - 1) / CHAR_BIT];
359 			for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
360 				if (*cp == 0)
361 					continue;
362 				for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
363 					if (*cp & i)
364 						break;
365 					inosused--;
366 				}
367 				break;
368 			}
369 			if (inosused <= 0)
370 				continue;
371 		}
372 		for (i = 0; i < inosused; i++, ino++) {
373 			if ((dp = getnextinode(ino)) == NULL || ino < ROOTINO ||
374 			    (mode = DIP(dp, di_mode) & IFMT) == 0)
375 				continue;
376 			/*
377 			 * XXX: Do not account for UIDs or GIDs that appear
378 			 * to be negative to prevent generating 100GB+
379 			 * quota files.
380 			 */
381 			if ((int)DIP(dp, di_uid) < 0 ||
382 			    (int)DIP(dp, di_gid) < 0) {
383 				if (vflag) {
384 					if (aflag)
385 						(void)printf("%s: ", mntpt);
386 			(void)printf("out of range UID/GID (%u/%u) ino=%u\n",
387 					    DIP(dp, di_uid), DIP(dp,di_gid),
388 					    ino);
389 				}
390 				continue;
391 			}
392 
393 			/*
394 			 * Do not account for file system snapshot files
395 			 * or the actual quota data files to be consistent
396 			 * with how they are handled inside the kernel.
397 			 */
398 #ifdef	SF_SNAPSHOT
399 			if (DIP(dp, di_flags) & SF_SNAPSHOT)
400 				continue;
401 #endif
402 			if ((ino == userino && dev == userdev) ||
403 			    (ino == groupino && dev == groupdev))
404 				continue;
405 			if (qfg) {
406 				fup = addid((u_long)DIP(dp, di_gid), GRPQUOTA,
407 				    (char *)0, mntpt);
408 				fup->fu_curinodes++;
409 				if (mode == IFREG || mode == IFDIR ||
410 				    mode == IFLNK)
411 					fup->fu_curblocks += DIP(dp, di_blocks);
412 			}
413 			if (qfu) {
414 				fup = addid((u_long)DIP(dp, di_uid), USRQUOTA,
415 				    (char *)0, mntpt);
416 				fup->fu_curinodes++;
417 				if (mode == IFREG || mode == IFDIR ||
418 				    mode == IFLNK)
419 					fup->fu_curblocks += DIP(dp, di_blocks);
420 			}
421 		}
422 	}
423 	freeinodebuf();
424 	if (qfu)
425 		errs += update(mntpt, qfu, USRQUOTA);
426 	if (qfg)
427 		errs += update(mntpt, qfg, GRPQUOTA);
428 	close(fi);
429 	(void)fflush(stdout);
430 	return (errs);
431 }
432 
433 /*
434  * Update a specified quota file.
435  */
436 int
437 update(const char *fsname, struct quotafile *qf, int type)
438 {
439 	struct fileusage *fup;
440 	u_long id, lastid, highid = 0;
441 	struct dqblk dqbuf;
442 	struct stat sb;
443 	static struct dqblk zerodqbuf;
444 	static struct fileusage zerofileusage;
445 
446 	/*
447 	 * Scan the on-disk quota file and record any usage changes.
448 	 */
449 	lastid = quota_maxid(qf);
450 	for (id = 0; id <= lastid; id++) {
451 		if (quota_read(qf, &dqbuf, id) < 0)
452 			dqbuf = zerodqbuf;
453 		if ((fup = lookup(id, type)) == NULL)
454 			fup = &zerofileusage;
455 		if (fup->fu_curinodes || fup->fu_curblocks ||
456 		    dqbuf.dqb_bsoftlimit || dqbuf.dqb_bhardlimit ||
457 		    dqbuf.dqb_isoftlimit || dqbuf.dqb_ihardlimit)
458 			highid = id;
459 		if (dqbuf.dqb_curinodes == fup->fu_curinodes &&
460 		    dqbuf.dqb_curblocks == fup->fu_curblocks) {
461 			fup->fu_curinodes = 0;
462 			fup->fu_curblocks = 0;
463 			continue;
464 		}
465 		printchanges(fsname, type, &dqbuf, fup, id);
466 		dqbuf.dqb_curinodes = fup->fu_curinodes;
467 		dqbuf.dqb_curblocks = fup->fu_curblocks;
468 		(void) quota_write_usage(qf, &dqbuf, id);
469 		fup->fu_curinodes = 0;
470 		fup->fu_curblocks = 0;
471 	}
472 
473 	/*
474 	 * Walk the hash table looking for ids with non-zero usage
475 	 * that are not currently recorded in the quota file. E.g.
476 	 * ids that are past the end of the current file.
477 	 */
478 	for (id = 0; id < FUHASH; id++) {
479 		for (fup = fuhead[type][id]; fup != NULL; fup = fup->fu_next) {
480 			if (fup->fu_id <= lastid)
481 				continue;
482 			if (fup->fu_curinodes == 0 && fup->fu_curblocks == 0)
483 				continue;
484 			bzero(&dqbuf, sizeof(struct dqblk));
485 			if (fup->fu_id > highid)
486 				highid = fup->fu_id;
487 			printchanges(fsname, type, &dqbuf, fup, fup->fu_id);
488 			dqbuf.dqb_curinodes = fup->fu_curinodes;
489 			dqbuf.dqb_curblocks = fup->fu_curblocks;
490 			(void) quota_write_usage(qf, &dqbuf, fup->fu_id);
491 			fup->fu_curinodes = 0;
492 			fup->fu_curblocks = 0;
493 		}
494 	}
495 	/*
496 	 * If this is old format file, then size may be smaller,
497 	 * so ensure that we only truncate when it will make things
498 	 * smaller, and not if it will grow an old format file.
499 	 */
500 	if (highid < lastid &&
501 	    stat(quota_qfname(qf), &sb) == 0 &&
502 	    sb.st_size > (((off_t)highid + 2) * sizeof(struct dqblk)))
503 		truncate(quota_qfname(qf),
504 		    (((off_t)highid + 2) * sizeof(struct dqblk)));
505 	return (0);
506 }
507 
508 /*
509  * Check to see if target appears in list of size cnt.
510  */
511 int
512 oneof(char *target, char *list[], int cnt)
513 {
514 	int i;
515 
516 	for (i = 0; i < cnt; i++)
517 		if (strcmp(target, list[i]) == 0)
518 			return (i);
519 	return (-1);
520 }
521 
522 /*
523  * Determine the group identifier for quota files.
524  */
525 int
526 getquotagid(void)
527 {
528 	struct group *gr;
529 
530 	if ((gr = getgrnam(quotagroup)) != NULL)
531 		return (gr->gr_gid);
532 	return (-1);
533 }
534 
535 /*
536  * Routines to manage the file usage table.
537  *
538  * Lookup an id of a specific type.
539  */
540 struct fileusage *
541 lookup(u_long id, int type)
542 {
543 	struct fileusage *fup;
544 
545 	for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
546 		if (fup->fu_id == id)
547 			return (fup);
548 	return (NULL);
549 }
550 
551 /*
552  * Add a new file usage id if it does not already exist.
553  */
554 struct fileusage *
555 addid(u_long id, int type, char *name, const char *fsname)
556 {
557 	struct fileusage *fup, **fhp;
558 	int len;
559 
560 	if ((fup = lookup(id, type)) != NULL)
561 		return (fup);
562 	if (name)
563 		len = strlen(name);
564 	else
565 		len = 0;
566 	if ((fup = calloc(1, sizeof(*fup) + len)) == NULL)
567 		errx(1, "calloc failed");
568 	fhp = &fuhead[type][id & (FUHASH - 1)];
569 	fup->fu_next = *fhp;
570 	*fhp = fup;
571 	fup->fu_id = id;
572 	if (name)
573 		bcopy(name, fup->fu_name, len + 1);
574 	else {
575 		(void)sprintf(fup->fu_name, "%lu", id);
576 		if (vflag) {
577 			if (aflag && fsname != NULL)
578 				(void)printf("%s: ", fsname);
579 			printf("unknown %cid: %lu\n",
580 			    type == USRQUOTA ? 'u' : 'g', id);
581 		}
582 	}
583 	return (fup);
584 }
585 
586 /*
587  * Special purpose version of ginode used to optimize pass
588  * over all the inodes in numerical order.
589  */
590 static ino_t nextino, lastinum, lastvalidinum;
591 static long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
592 static caddr_t inodebuf;
593 #define INOBUFSIZE	56*1024		/* size of buffer to read inodes */
594 
595 union dinode *
596 getnextinode(ino_t inumber)
597 {
598 	long size;
599 	ufs2_daddr_t dblk;
600 	union dinode *dp;
601 	static caddr_t nextinop;
602 
603 	if (inumber != nextino++ || inumber > lastvalidinum)
604 		errx(1, "bad inode number %d to nextinode", inumber);
605 	if (inumber >= lastinum) {
606 		readcnt++;
607 		dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum));
608 		if (readcnt % readpercg == 0) {
609 			size = partialsize;
610 			lastinum += partialcnt;
611 		} else {
612 			size = inobufsize;
613 			lastinum += fullcnt;
614 		}
615 		/*
616 		 * If bread returns an error, it will already have zeroed
617 		 * out the buffer, so we do not need to do so here.
618 		 */
619 		bread(dblk, inodebuf, size);
620 		nextinop = inodebuf;
621 	}
622 	dp = (union dinode *)nextinop;
623 	if (sblock.fs_magic == FS_UFS1_MAGIC)
624 		nextinop += sizeof(struct ufs1_dinode);
625 	else
626 		nextinop += sizeof(struct ufs2_dinode);
627 	return (dp);
628 }
629 
630 /*
631  * Prepare to scan a set of inodes.
632  */
633 void
634 setinodebuf(ino_t inum)
635 {
636 
637 	if (inum % sblock.fs_ipg != 0)
638 		errx(1, "bad inode number %d to setinodebuf", inum);
639 	lastvalidinum = inum + sblock.fs_ipg - 1;
640 	nextino = inum;
641 	lastinum = inum;
642 	readcnt = 0;
643 	if (inodebuf != NULL)
644 		return;
645 	inobufsize = blkroundup(&sblock, INOBUFSIZE);
646 	fullcnt = inobufsize / ((sblock.fs_magic == FS_UFS1_MAGIC) ?
647 	    sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
648 	readpercg = sblock.fs_ipg / fullcnt;
649 	partialcnt = sblock.fs_ipg % fullcnt;
650 	partialsize = partialcnt * ((sblock.fs_magic == FS_UFS1_MAGIC) ?
651 	    sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
652 	if (partialcnt != 0) {
653 		readpercg++;
654 	} else {
655 		partialcnt = fullcnt;
656 		partialsize = inobufsize;
657 	}
658 	if ((inodebuf = malloc((unsigned)inobufsize)) == NULL)
659 		errx(1, "cannot allocate space for inode buffer");
660 }
661 
662 /*
663  * Free up data structures used to scan inodes.
664  */
665 void
666 freeinodebuf(void)
667 {
668 
669 	if (inodebuf != NULL)
670 		free(inodebuf);
671 	inodebuf = NULL;
672 }
673 
674 /*
675  * Read specified disk blocks.
676  */
677 void
678 bread(ufs2_daddr_t bno, char *buf, long cnt)
679 {
680 
681 	if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0 ||
682 	    read(fi, buf, cnt) != cnt)
683 		errx(1, "bread failed on block %ld", (long)bno);
684 }
685 
686 /*
687  * Display updated block and i-node counts.
688  */
689 void
690 printchanges(const char *fsname, int type, struct dqblk *dp,
691     struct fileusage *fup, u_long id)
692 {
693 	if (!vflag)
694 		return;
695 	if (aflag)
696 		(void)printf("%s: ", fsname);
697 	if (fup->fu_name[0] == '\0')
698 		(void)printf("%-8lu fixed ", id);
699 	else
700 		(void)printf("%-8s fixed ", fup->fu_name);
701 	switch (type) {
702 
703 	case GRPQUOTA:
704 		(void)printf("(group):");
705 		break;
706 
707 	case USRQUOTA:
708 		(void)printf("(user): ");
709 		break;
710 
711 	default:
712 		(void)printf("(unknown quota type %d)", type);
713 		break;
714 	}
715 	if (dp->dqb_curinodes != fup->fu_curinodes)
716 		(void)printf("\tinodes %lu -> %lu", (u_long)dp->dqb_curinodes,
717 		    (u_long)fup->fu_curinodes);
718 	if (dp->dqb_curblocks != fup->fu_curblocks)
719 		(void)printf("\tblocks %lu -> %lu",
720 		    (u_long)dp->dqb_curblocks,
721 		    (u_long)fup->fu_curblocks);
722 	(void)printf("\n");
723 }
724