1/*	$OpenBSD: dirs.c,v 1.43 2024/01/09 03:16:00 guenther Exp $	*/
2/*	$NetBSD: dirs.c,v 1.26 1997/07/01 05:37:49 lukem Exp $	*/
3
4/*
5 * Copyright (c) 1983, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 * (c) UNIX System Laboratories, Inc.
8 * All or some portions of this file are derived from material licensed
9 * to the University of California by American Telephone and Telegraph
10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
11 * the permission of UNIX System Laboratories, Inc.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38#include <sys/stat.h>
39#include <sys/time.h>
40
41#include <ufs/ffs/fs.h>
42#include <ufs/ufs/dinode.h>
43#include <ufs/ufs/dir.h>
44#include <protocols/dumprestore.h>
45
46#include <endian.h>
47#include <err.h>
48#include <errno.h>
49#include <fcntl.h>
50#include <paths.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <unistd.h>
55#include <limits.h>
56
57#include "restore.h"
58#include "extern.h"
59
60/*
61 * Symbol table of directories read from tape.
62 */
63#define HASHSIZE	1000
64#define INOHASH(val) (val % HASHSIZE)
65struct inotab {
66	struct	inotab *t_next;
67	ino_t	t_ino;
68	int32_t	t_seekpt;
69	int32_t	t_size;
70};
71static struct inotab *inotab[HASHSIZE];
72
73/*
74 * Information retained about directories.
75 */
76struct modeinfo {
77	ino_t ino;
78	struct timespec ctimep[2];
79	struct timespec mtimep[2];
80	mode_t mode;
81	uid_t uid;
82	gid_t gid;
83	u_int flags;
84};
85
86/*
87 * Definitions for library routines operating on directories.
88 */
89#undef DIRBLKSIZ
90#define DIRBLKSIZ 1024
91struct rstdirdesc {
92	int	dd_fd;
93	int32_t	dd_loc;
94	int32_t	dd_size;
95	char	dd_buf[DIRBLKSIZ];
96};
97
98/*
99 * Global variables for this file.
100 */
101static long	seekpt;
102static FILE	*df, *mf;
103static RST_DIR	*dirp;
104static char	dirfile[PATH_MAX] = "#";	/* No file */
105static char	modefile[PATH_MAX] = "#";	/* No file */
106static char	dot[2] = ".";			/* So it can be modified */
107
108/*
109 * Format of old style directories.
110 */
111#define ODIRSIZ 14
112struct odirect {
113	u_short	d_ino;
114	char	d_name[ODIRSIZ];
115};
116
117static struct inotab	*allocinotab(FILE *, struct context *, long);
118static void		 dcvt(struct odirect *, struct direct *);
119static void		 flushent(void);
120static struct inotab	*inotablookup(ino_t);
121static RST_DIR		*opendirfile(const char *);
122static void		 putdir(char *, size_t);
123static void		 putent(struct direct *);
124static void		 rst_seekdir(RST_DIR *, long, long);
125static long		 rst_telldir(RST_DIR *);
126static struct direct	*searchdir(ino_t, char *);
127
128/*
129 *	Extract directory contents, building up a directory structure
130 *	on disk for extraction by name.
131 *	If genmode is requested, save mode, owner, and times for all
132 *	directories on the tape.
133 */
134void
135extractdirs(int genmode)
136{
137	int i;
138	struct inotab *itp;
139	struct direct nulldir;
140	int fd;
141
142	Vprintf(stdout, "Extract directories from tape\n");
143	(void)snprintf(dirfile, sizeof(dirfile), "%s/rstdir%lld", tmpdir,
144	    (long long)dumpdate);
145	if (command != 'r' && command != 'R') {
146		strlcat(dirfile, "-XXXXXXXXXX", sizeof(dirfile));
147		fd = mkstemp(dirfile);
148	} else
149		fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
150	if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
151		int saved_errno = errno;
152		if (fd != -1)
153			close(fd);
154		errc(1, saved_errno,
155		    "cannot create directory temporary %s", dirfile);
156	}
157	if (genmode != 0) {
158		(void)snprintf(modefile, sizeof(modefile), "%s/rstmode%lld",
159		    tmpdir, (long long)dumpdate);
160		if (command != 'r' && command != 'R') {
161			strlcat(modefile, "-XXXXXXXXXX", sizeof(modefile));
162			fd = mkstemp(modefile);
163		} else
164			fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
165		if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
166			int saved_errno = errno;
167			if (fd != -1)
168				close(fd);
169			errc(1, saved_errno,
170			    "cannot create modefile %s", modefile);
171		}
172	}
173	nulldir.d_ino = 0;
174	nulldir.d_type = DT_DIR;
175	nulldir.d_namlen = 1;
176	nulldir.d_name[0] = '/';
177	nulldir.d_name[1] = '\0';
178	nulldir.d_reclen = DIRSIZ(&nulldir);
179	for (;;) {
180		curfile.name = "<directory file - name unknown>";
181		curfile.action = USING;
182		if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR) {
183			(void)fclose(df);
184			dirp = opendirfile(dirfile);
185			if (dirp == NULL)
186				warn("opendirfile");
187			if (mf != NULL)
188				(void)fclose(mf);
189			i = dirlookup(dot);
190			if (i == 0)
191				panic("Root directory is not on tape\n");
192			return;
193		}
194		itp = allocinotab(mf, &curfile, seekpt);
195		getfile(putdir, xtrnull);
196		putent(&nulldir);
197		flushent();
198		itp->t_size = seekpt - itp->t_seekpt;
199	}
200}
201
202/*
203 * skip over all the directories on the tape
204 */
205void
206skipdirs(void)
207{
208
209	while (curfile.ino && (curfile.mode & IFMT) == IFDIR) {
210		skipfile();
211	}
212}
213
214/*
215 *	Recursively find names and inumbers of all files in subtree
216 *	pname and pass them off to be processed.
217 */
218void
219treescan(char *pname, ino_t ino, long (*todo)(char *, ino_t, int))
220{
221	struct inotab *itp;
222	struct direct *dp;
223	size_t namelen;
224	long bpt;
225	char locname[PATH_MAX + 1];
226
227	itp = inotablookup(ino);
228	if (itp == NULL) {
229		/*
230		 * Pname is name of a simple file or an unchanged directory.
231		 */
232		(void)(*todo)(pname, ino, LEAF);
233		return;
234	}
235	/*
236	 * Pname is a dumped directory name.
237	 */
238	if ((*todo)(pname, ino, NODE) == FAIL)
239		return;
240	/*
241	 * begin search through the directory
242	 * skipping over "." and ".."
243	 */
244	namelen = strlcpy(locname, pname, sizeof(locname));
245	if (namelen >= sizeof(locname) - 1)
246		namelen = sizeof(locname) - 2;
247	locname[namelen++] = '/';
248	locname[namelen] = '\0';
249	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
250	dp = rst_readdir(dirp); /* "." */
251	if (dp != NULL && strcmp(dp->d_name, ".") == 0)
252		dp = rst_readdir(dirp); /* ".." */
253	else
254		fprintf(stderr, "Warning: `.' missing from directory %s\n",
255			pname);
256	if (dp != NULL && strcmp(dp->d_name, "..") == 0)
257		dp = rst_readdir(dirp); /* first real entry */
258	else
259		fprintf(stderr, "Warning: `..' missing from directory %s\n",
260			pname);
261	bpt = rst_telldir(dirp);
262	/*
263	 * a zero inode signals end of directory
264	 */
265	while (dp != NULL) {
266		locname[namelen] = '\0';
267		if (namelen + dp->d_namlen >= sizeof(locname)) {
268			fprintf(stderr, "%s%s: name exceeds %zd char\n",
269				locname, dp->d_name, sizeof(locname) - 1);
270		} else {
271			(void)strlcat(locname, dp->d_name, sizeof(locname));
272			treescan(locname, dp->d_ino, todo);
273			rst_seekdir(dirp, bpt, itp->t_seekpt);
274		}
275		dp = rst_readdir(dirp);
276		bpt = rst_telldir(dirp);
277	}
278}
279
280/*
281 * Lookup a pathname which is always assumed to start from the ROOTINO.
282 */
283struct direct *
284pathsearch(const char *pathname)
285{
286	ino_t ino;
287	struct direct *dp;
288	char *path, *name, buffer[PATH_MAX];
289
290	strlcpy(buffer, pathname, sizeof buffer);
291	path = buffer;
292	ino = ROOTINO;
293	while (*path == '/')
294		path++;
295	dp = NULL;
296	while ((name = strsep(&path, "/")) != NULL && *name != '\0') {
297		if ((dp = searchdir(ino, name)) == NULL)
298			return (NULL);
299		ino = dp->d_ino;
300	}
301	return (dp);
302}
303
304/*
305 * Lookup the requested name in directory inum.
306 * Return its inode number if found, zero if it does not exist.
307 */
308static struct direct *
309searchdir(ino_t inum, char *name)
310{
311	struct direct *dp;
312	struct inotab *itp;
313	int len;
314
315	itp = inotablookup(inum);
316	if (itp == NULL)
317		return (NULL);
318	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
319	len = strlen(name);
320	do {
321		dp = rst_readdir(dirp);
322		if (dp == NULL)
323			return (NULL);
324	} while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
325	return (dp);
326}
327
328/*
329 * Put the directory entries in the directory file
330 */
331static void
332putdir(char *buf, size_t size)
333{
334	struct direct cvtbuf;
335	struct odirect *odp;
336	struct odirect *eodp;
337	struct direct *dp;
338	size_t loc, i;
339
340	if (cvtflag) {
341		eodp = (struct odirect *)&buf[size];
342		for (odp = (struct odirect *)buf; odp < eodp; odp++)
343			if (odp->d_ino != 0) {
344				dcvt(odp, &cvtbuf);
345				putent(&cvtbuf);
346			}
347	} else {
348		for (loc = 0; loc < size; ) {
349			dp = (struct direct *)(buf + loc);
350			if (Bcvt) {
351				dp->d_ino = swap32(dp->d_ino);
352				dp->d_reclen = swap16(dp->d_reclen);
353			}
354			if (oldinofmt && dp->d_ino != 0) {
355#				if BYTE_ORDER == BIG_ENDIAN
356					if (Bcvt)
357						dp->d_namlen = dp->d_type;
358#				else
359					if (!Bcvt)
360						dp->d_namlen = dp->d_type;
361#				endif
362				dp->d_type = DT_UNKNOWN;
363			}
364			i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
365			if ((dp->d_reclen & 0x3) != 0 ||
366			    dp->d_reclen > i ||
367			    dp->d_reclen < DIRSIZ(dp) ||
368			    dp->d_namlen > NAME_MAX) {
369				Vprintf(stdout, "Mangled directory: ");
370				if ((dp->d_reclen & 0x3) != 0)
371					Vprintf(stdout,
372					   "reclen not multiple of 4 ");
373				if (dp->d_reclen < DIRSIZ(dp))
374					Vprintf(stdout,
375					   "reclen less than DIRSIZ (%u < %u) ",
376					   (unsigned)dp->d_reclen,
377					   (unsigned)DIRSIZ(dp));
378				if (dp->d_namlen > NAME_MAX)
379					Vprintf(stdout,
380					   "reclen name too big (%u > %u) ",
381					   (unsigned)dp->d_namlen, NAME_MAX);
382				Vprintf(stdout, "\n");
383				loc += i;
384				continue;
385			}
386			loc += dp->d_reclen;
387			if (dp->d_ino != 0) {
388				putent(dp);
389			}
390		}
391	}
392}
393
394/*
395 * These variables are "local" to the following two functions.
396 */
397char dirbuf[DIRBLKSIZ];
398long dirloc = 0;
399long prev = 0;
400
401/*
402 * add a new directory entry to a file.
403 */
404static void
405putent(struct direct *dp)
406{
407	dp->d_reclen = DIRSIZ(dp);
408	if (dirloc + dp->d_reclen > DIRBLKSIZ) {
409		((struct direct *)(dirbuf + prev))->d_reclen =
410		    DIRBLKSIZ - prev;
411		(void)fwrite(dirbuf, 1, DIRBLKSIZ, df);
412		dirloc = 0;
413	}
414	memcpy(dirbuf + dirloc, dp, dp->d_reclen);
415	prev = dirloc;
416	dirloc += dp->d_reclen;
417}
418
419/*
420 * flush out a directory that is finished.
421 */
422static void
423flushent(void)
424{
425	((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
426	(void)fwrite(dirbuf, dirloc, 1, df);
427	seekpt = ftell(df);
428	dirloc = 0;
429}
430
431static void
432dcvt(struct odirect *odp, struct direct *ndp)
433{
434
435	memset(ndp, 0, sizeof *ndp);
436	if (Bcvt)
437	    ndp->d_ino = swap16(odp->d_ino);
438	else
439	    ndp->d_ino = odp->d_ino;
440	ndp->d_type = DT_UNKNOWN;
441	(void)strncpy(ndp->d_name, odp->d_name, ODIRSIZ);
442	ndp->d_namlen = strlen(ndp->d_name);
443	ndp->d_reclen = DIRSIZ(ndp);
444}
445
446/*
447 * Seek to an entry in a directory.
448 * Only values returned by rst_telldir should be passed to rst_seekdir.
449 * This routine handles many directories in a single file.
450 * It takes the base of the directory in the file, plus
451 * the desired seek offset into it.
452 */
453static void
454rst_seekdir(RST_DIR *dirp, long loc, long base)
455{
456
457	if (loc == rst_telldir(dirp))
458		return;
459	loc -= base;
460	if (loc < 0)
461		fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc);
462	(void)lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET);
463	dirp->dd_loc = loc & (DIRBLKSIZ - 1);
464	if (dirp->dd_loc != 0)
465		dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
466}
467
468/*
469 * get next entry in a directory.
470 */
471struct direct *
472rst_readdir(RST_DIR *dirp)
473{
474	struct direct *dp;
475
476	for (;;) {
477		if (dirp->dd_loc == 0) {
478			dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
479			    DIRBLKSIZ);
480			if (dirp->dd_size <= 0) {
481				Dprintf(stderr, "error reading directory\n");
482				return (NULL);
483			}
484		}
485		if (dirp->dd_loc >= dirp->dd_size) {
486			dirp->dd_loc = 0;
487			continue;
488		}
489		dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
490		if (dp->d_reclen == 0 ||
491		    dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
492			Dprintf(stderr, "corrupted directory: bad reclen %d\n",
493				dp->d_reclen);
494			return (NULL);
495		}
496		dirp->dd_loc += dp->d_reclen;
497		if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
498			return (NULL);
499		if (dp->d_ino >= maxino) {
500			Dprintf(stderr, "corrupted directory: bad inum %llu\n",
501			    (unsigned long long)dp->d_ino);
502			continue;
503		}
504		return (dp);
505	}
506}
507
508/*
509 * Simulate the opening of a directory
510 */
511RST_DIR *
512rst_opendir(const char *name)
513{
514	struct inotab *itp;
515	RST_DIR *dirp;
516	ino_t ino;
517
518	if ((ino = dirlookup(name)) > 0 &&
519	    (itp = inotablookup(ino)) != NULL) {
520		dirp = opendirfile(dirfile);
521		rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
522		return (dirp);
523	}
524	return (NULL);
525}
526
527/*
528 * In our case, there is nothing to do when closing a directory.
529 */
530void
531rst_closedir(RST_DIR *dirp)
532{
533	(void)close(dirp->dd_fd);
534	free(dirp);
535	return;
536}
537
538/*
539 * Simulate finding the current offset in the directory.
540 */
541static long
542rst_telldir(RST_DIR *dirp)
543{
544	return ((long)lseek(dirp->dd_fd,
545	    (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
546}
547
548/*
549 * Open a directory file.
550 */
551static RST_DIR *
552opendirfile(const char *name)
553{
554	RST_DIR *dirp;
555	int fd;
556
557	if ((fd = open(name, O_RDONLY)) == -1)
558		return (NULL);
559	if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
560		(void)close(fd);
561		return (NULL);
562	}
563	dirp->dd_fd = fd;
564	dirp->dd_loc = 0;
565	return (dirp);
566}
567
568/*
569 * Set the mode, owner, and times for all new or changed directories
570 */
571void
572setdirmodes(int flags)
573{
574	FILE *mf;
575	struct modeinfo node;
576	struct entry *ep;
577	char *cp;
578
579	Vprintf(stdout, "Set directory mode, owner, and times.\n");
580	if (command == 'r' || command == 'R')
581		(void)snprintf(modefile, sizeof(modefile), "%s/rstmode%lld",
582		    tmpdir, (long long)dumpdate);
583	if (modefile[0] == '#') {
584		panic("modefile not defined\n");
585		fputs("directory mode, owner, and times not set\n", stderr);
586		return;
587	}
588	mf = fopen(modefile, "r");
589	if (mf == NULL) {
590		warn("fopen");
591		fprintf(stderr, "cannot open mode file %s\n", modefile);
592		fprintf(stderr, "directory mode, owner, and times not set\n");
593		return;
594	}
595	clearerr(mf);
596	for (;;) {
597		(void)fread((char *)&node, 1, sizeof(struct modeinfo), mf);
598		if (feof(mf))
599			break;
600		ep = lookupino(node.ino);
601		if (command == 'i' || command == 'x') {
602			if (ep == NULL)
603				continue;
604			if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
605				ep->e_flags &= ~NEW;
606				continue;
607			}
608			if (node.ino == ROOTINO &&
609		   	    reply("set owner/mode for '.'") == FAIL)
610				continue;
611		}
612		if (ep == NULL) {
613			panic("cannot find directory inode %llu\n",
614			    (unsigned long long)node.ino);
615		} else {
616			if (!Nflag) {
617				cp = myname(ep);
618				(void)chown(cp, node.uid, node.gid);
619				(void)chmod(cp, node.mode);
620				(void)chflags(cp, node.flags);
621				(void)utimensat(AT_FDCWD, cp, node.ctimep, 0);
622				(void)utimensat(AT_FDCWD, cp, node.mtimep, 0);
623			}
624			ep->e_flags &= ~NEW;
625		}
626	}
627	if (ferror(mf))
628		panic("error setting directory modes\n");
629	(void)fclose(mf);
630}
631
632/*
633 * Generate a literal copy of a directory.
634 */
635int
636genliteraldir(char *name, ino_t ino)
637{
638	struct inotab *itp;
639	int ofile, dp, i, size;
640	char buf[BUFSIZ];
641
642	itp = inotablookup(ino);
643	if (itp == NULL)
644		panic("Cannot find directory inode %llu named %s\n",
645		    (unsigned long long)ino, name);
646	if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) == -1) {
647		warn("%s: cannot create file", name);
648		return (FAIL);
649	}
650	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
651	dp = dup(dirp->dd_fd);
652	for (i = itp->t_size; i > 0; i -= BUFSIZ) {
653		size = i < BUFSIZ ? i : BUFSIZ;
654		if (read(dp, buf, size) == -1)
655			err(1, "read error extracting inode %llu, name %s",
656			    (unsigned long long)curfile.ino, curfile.name);
657		xtrfile(buf, size);
658	}
659	(void)close(dp);
660	(void)close(ofile);
661	return (GOOD);
662}
663
664/*
665 * Determine the type of an inode
666 */
667int
668inodetype(ino_t ino)
669{
670	struct inotab *itp;
671
672	itp = inotablookup(ino);
673	if (itp == NULL)
674		return (LEAF);
675	return (NODE);
676}
677
678/*
679 * Allocate and initialize a directory inode entry.
680 * If requested, save its pertinent mode, owner, and time info.
681 */
682static struct inotab *
683allocinotab(FILE *mf, struct context *ctxp, long seekpt)
684{
685	struct inotab	*itp;
686	struct modeinfo node;
687
688	itp = calloc(1, sizeof(struct inotab));
689	if (itp == NULL)
690		panic("no memory directory table\n");
691	itp->t_next = inotab[INOHASH(ctxp->ino)];
692	inotab[INOHASH(ctxp->ino)] = itp;
693	itp->t_ino = ctxp->ino;
694	itp->t_seekpt = seekpt;
695	if (mf == NULL)
696		return (itp);
697	node.ino = ctxp->ino;
698	node.mtimep[0].tv_sec = ctxp->atime_sec;
699	node.mtimep[0].tv_nsec = ctxp->atime_nsec;
700	node.mtimep[1].tv_sec = ctxp->mtime_sec;
701	node.mtimep[1].tv_nsec = ctxp->mtime_nsec;
702	node.ctimep[0].tv_sec = ctxp->atime_sec;
703	node.ctimep[0].tv_nsec = ctxp->atime_nsec;
704	node.ctimep[1].tv_sec = ctxp->birthtime_sec;
705	node.ctimep[1].tv_nsec = ctxp->birthtime_nsec;
706	node.mode = ctxp->mode;
707	node.flags = ctxp->file_flags;
708	node.uid = ctxp->uid;
709	node.gid = ctxp->gid;
710	(void)fwrite((char *)&node, 1, sizeof(struct modeinfo), mf);
711	return (itp);
712}
713
714/*
715 * Look up an inode in the table of directories
716 */
717static struct inotab *
718inotablookup(ino_t ino)
719{
720	struct inotab *itp;
721
722	for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
723		if (itp->t_ino == ino)
724			return (itp);
725	return (NULL);
726}
727
728/*
729 * Clean up and exit
730 */
731void
732cleanup(void)
733{
734
735	closemt();
736	if (modefile[0] != '#')
737		(void)unlink(modefile);
738	if (dirfile[0] != '#')
739		(void)unlink(dirfile);
740}
741