dirs.c revision 29574 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	$Id: dirs.c,v 1.9 1997/06/18 06:28:46 charnier Exp $
39 */
40
41#ifndef lint
42static char sccsid[] = "@(#)dirs.c	8.7 (Berkeley) 5/1/95";
43#endif /* not lint */
44
45#include <sys/param.h>
46#include <sys/file.h>
47#include <sys/stat.h>
48#include <sys/time.h>
49
50#include <ufs/ufs/dinode.h>
51#include <ufs/ufs/dir.h>
52#include <ufs/ffs/fs.h>
53#include <protocols/dumprestore.h>
54
55#include <errno.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <unistd.h>
60#include <err.h>
61
62#include <machine/endian.h>
63
64#include "pathnames.h"
65#include "restore.h"
66#include "extern.h"
67
68/*
69 * Symbol table of directories read from tape.
70 */
71#define HASHSIZE	1000
72#define INOHASH(val) (val % HASHSIZE)
73struct inotab {
74	struct	inotab *t_next;
75	ino_t	t_ino;
76	long	t_seekpt;
77	long	t_size;
78};
79static struct inotab *inotab[HASHSIZE];
80
81/*
82 * Information retained about directories.
83 */
84struct modeinfo {
85	ino_t ino;
86	struct timeval timep[2];
87	mode_t mode;
88	uid_t uid;
89	gid_t gid;
90	int flags;
91};
92
93/*
94 * Definitions for library routines operating on directories.
95 */
96#undef DIRBLKSIZ
97#define DIRBLKSIZ 1024
98struct rstdirdesc {
99	int	dd_fd;
100	long	dd_loc;
101	long	dd_size;
102	char	dd_buf[DIRBLKSIZ];
103};
104
105/*
106 * Global variables for this file.
107 */
108static long	seekpt;
109static FILE	*df, *mf;
110static RST_DIR	*dirp;
111static char	dirfile[MAXPATHLEN] = "#";	/* No file */
112static char	modefile[MAXPATHLEN] = "#";	/* No file */
113static char	dot[2] = ".";			/* So it can be modified */
114
115/*
116 * Format of old style directories.
117 */
118#define ODIRSIZ 14
119struct odirect {
120	u_short	d_ino;
121	char	d_name[ODIRSIZ];
122};
123
124static struct inotab	*allocinotab __P((ino_t, struct dinode *, long));
125static void		 dcvt __P((struct odirect *, struct direct *));
126static void		 flushent __P((void));
127static struct inotab	*inotablookup __P((ino_t));
128static RST_DIR		*opendirfile __P((const char *));
129static void		 putdir __P((char *, long));
130static void		 putent __P((struct direct *));
131static void		 rst_seekdir __P((RST_DIR *, long, long));
132static long		 rst_telldir __P((RST_DIR *));
133static struct direct	*searchdir __P((ino_t, char *));
134
135/*
136 *	Extract directory contents, building up a directory structure
137 *	on disk for extraction by name.
138 *	If genmode is requested, save mode, owner, and times for all
139 *	directories on the tape.
140 */
141void
142extractdirs(genmode)
143	int genmode;
144{
145	register int i;
146	register struct dinode *ip;
147	struct inotab *itp;
148	struct direct nulldir;
149	int fd;
150
151	vprintf(stdout, "Extract directories from tape\n");
152	(void) sprintf(dirfile, "%srstdir%d", _PATH_TMP, dumpdate);
153	if (command != 'r' && command != 'R') {
154		(void *) strcat(dirfile, "-XXXXXX");
155		fd = mkstemp(dirfile);
156	} else
157		fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
158	if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
159		if (fd != -1)
160			close(fd);
161		warn("%s - cannot create directory temporary\nfopen", dirfile);
162		done(1);
163	}
164	if (genmode != 0) {
165		(void) sprintf(modefile, "%srstmode%d", _PATH_TMP, dumpdate);
166		if (command != 'r' && command != 'R') {
167			(void *) strcat(modefile, "-XXXXXX");
168			fd = mkstemp(modefile);
169		} else
170			fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
171		if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
172			if (fd != -1)
173				close(fd);
174			warn("%s - cannot create modefile\nfopen", modefile);
175			done(1);
176		}
177	}
178	nulldir.d_ino = 0;
179	nulldir.d_type = DT_DIR;
180	nulldir.d_namlen = 1;
181	(void) strcpy(nulldir.d_name, "/");
182	nulldir.d_reclen = DIRSIZ(0, &nulldir);
183	for (;;) {
184		curfile.name = "<directory file - name unknown>";
185		curfile.action = USING;
186		ip = curfile.dip;
187		if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) {
188			(void) fclose(df);
189			dirp = opendirfile(dirfile);
190			if (dirp == NULL)
191				fprintf(stderr, "opendirfile: %s\n",
192				    strerror(errno));
193			if (mf != NULL)
194				(void) fclose(mf);
195			i = dirlookup(dot);
196			if (i == 0)
197				panic("Root directory is not on tape\n");
198			return;
199		}
200		itp = allocinotab(curfile.ino, ip, seekpt);
201		getfile(putdir, xtrnull);
202		putent(&nulldir);
203		flushent();
204		itp->t_size = seekpt - itp->t_seekpt;
205	}
206}
207
208/*
209 * skip over all the directories on the tape
210 */
211void
212skipdirs()
213{
214
215	while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) {
216		skipfile();
217	}
218}
219
220/*
221 *	Recursively find names and inumbers of all files in subtree
222 *	pname and pass them off to be processed.
223 */
224void
225treescan(pname, ino, todo)
226	char *pname;
227	ino_t ino;
228	long (*todo) __P((char *, ino_t, int));
229{
230	register struct inotab *itp;
231	register struct direct *dp;
232	int namelen;
233	long bpt;
234	char locname[MAXPATHLEN + 1];
235
236	itp = inotablookup(ino);
237	if (itp == NULL) {
238		/*
239		 * Pname is name of a simple file or an unchanged directory.
240		 */
241		(void) (*todo)(pname, ino, LEAF);
242		return;
243	}
244	/*
245	 * Pname is a dumped directory name.
246	 */
247	if ((*todo)(pname, ino, NODE) == FAIL)
248		return;
249	/*
250	 * begin search through the directory
251	 * skipping over "." and ".."
252	 */
253	(void) strncpy(locname, pname, sizeof(locname) - 1);
254	locname[sizeof(locname) - 1] = '\0';
255	(void) strncat(locname, "/", sizeof(locname) - strlen(locname));
256	namelen = strlen(locname);
257	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
258	dp = rst_readdir(dirp); /* "." */
259	if (dp != NULL && strcmp(dp->d_name, ".") == 0)
260		dp = rst_readdir(dirp); /* ".." */
261	else
262		fprintf(stderr, "Warning: `.' missing from directory %s\n",
263			pname);
264	if (dp != NULL && strcmp(dp->d_name, "..") == 0)
265		dp = rst_readdir(dirp); /* first real entry */
266	else
267		fprintf(stderr, "Warning: `..' missing from directory %s\n",
268			pname);
269	bpt = rst_telldir(dirp);
270	/*
271	 * a zero inode signals end of directory
272	 */
273	while (dp != NULL) {
274		locname[namelen] = '\0';
275		if (namelen + dp->d_namlen >= sizeof(locname)) {
276			fprintf(stderr, "%s%s: name exceeds %d char\n",
277				locname, dp->d_name, sizeof(locname) - 1);
278		} else {
279			(void) strncat(locname, dp->d_name, (int)dp->d_namlen);
280			treescan(locname, dp->d_ino, todo);
281			rst_seekdir(dirp, bpt, itp->t_seekpt);
282		}
283		dp = rst_readdir(dirp);
284		bpt = rst_telldir(dirp);
285	}
286}
287
288/*
289 * Lookup a pathname which is always assumed to start from the ROOTINO.
290 */
291struct direct *
292pathsearch(pathname)
293	const char *pathname;
294{
295	ino_t ino;
296	struct direct *dp;
297	char *path, *name, buffer[MAXPATHLEN];
298
299	strcpy(buffer, pathname);
300	path = buffer;
301	ino = ROOTINO;
302	while (*path == '/')
303		path++;
304	dp = NULL;
305	while ((name = strsep(&path, "/")) != NULL && *name != '\0') {
306		if ((dp = searchdir(ino, name)) == NULL)
307			return (NULL);
308		ino = dp->d_ino;
309	}
310	return (dp);
311}
312
313/*
314 * Lookup the requested name in directory inum.
315 * Return its inode number if found, zero if it does not exist.
316 */
317static struct direct *
318searchdir(inum, name)
319	ino_t	inum;
320	char	*name;
321{
322	register struct direct *dp;
323	register struct inotab *itp;
324	int len;
325
326	itp = inotablookup(inum);
327	if (itp == NULL)
328		return (NULL);
329	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
330	len = strlen(name);
331	do {
332		dp = rst_readdir(dirp);
333		if (dp == NULL)
334			return (NULL);
335	} while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
336	return (dp);
337}
338
339/*
340 * Put the directory entries in the directory file
341 */
342static void
343putdir(buf, size)
344	char *buf;
345	long size;
346{
347	struct direct cvtbuf;
348	register struct odirect *odp;
349	struct odirect *eodp;
350	register struct direct *dp;
351	long loc, i;
352
353	if (cvtflag) {
354		eodp = (struct odirect *)&buf[size];
355		for (odp = (struct odirect *)buf; odp < eodp; odp++)
356			if (odp->d_ino != 0) {
357				dcvt(odp, &cvtbuf);
358				putent(&cvtbuf);
359			}
360	} else {
361		for (loc = 0; loc < size; ) {
362			dp = (struct direct *)(buf + loc);
363			if (Bcvt)
364				swabst((u_char *)"ls", (u_char *) dp);
365			if (oldinofmt && dp->d_ino != 0) {
366#				if BYTE_ORDER == BIG_ENDIAN
367					if (Bcvt)
368						dp->d_namlen = dp->d_type;
369#				else
370					if (!Bcvt)
371						dp->d_namlen = dp->d_type;
372#				endif
373				dp->d_type = DT_UNKNOWN;
374			}
375			i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
376			if ((dp->d_reclen & 0x3) != 0 ||
377			    dp->d_reclen > i ||
378			    dp->d_reclen < DIRSIZ(0, dp) ||
379			    dp->d_namlen > NAME_MAX) {
380				vprintf(stdout, "Mangled directory: ");
381				if ((dp->d_reclen & 0x3) != 0)
382					vprintf(stdout,
383					   "reclen not multiple of 4 ");
384				if (dp->d_reclen < DIRSIZ(0, dp))
385					vprintf(stdout,
386					   "reclen less than DIRSIZ (%d < %d) ",
387					   dp->d_reclen, DIRSIZ(0, dp));
388				if (dp->d_namlen > NAME_MAX)
389					vprintf(stdout,
390					   "reclen name too big (%d > %d) ",
391					   dp->d_namlen, NAME_MAX);
392				vprintf(stdout, "\n");
393				loc += i;
394				continue;
395			}
396			loc += dp->d_reclen;
397			if (dp->d_ino != 0) {
398				putent(dp);
399			}
400		}
401	}
402}
403
404/*
405 * These variables are "local" to the following two functions.
406 */
407char dirbuf[DIRBLKSIZ];
408long dirloc = 0;
409long prev = 0;
410
411/*
412 * add a new directory entry to a file.
413 */
414static void
415putent(dp)
416	struct direct *dp;
417{
418	dp->d_reclen = DIRSIZ(0, dp);
419	if (dirloc + dp->d_reclen > DIRBLKSIZ) {
420		((struct direct *)(dirbuf + prev))->d_reclen =
421		    DIRBLKSIZ - prev;
422		(void) fwrite(dirbuf, 1, DIRBLKSIZ, df);
423		dirloc = 0;
424	}
425	memmove(dirbuf + dirloc, dp, (long)dp->d_reclen);
426	prev = dirloc;
427	dirloc += dp->d_reclen;
428}
429
430/*
431 * flush out a directory that is finished.
432 */
433static void
434flushent()
435{
436	((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
437	(void) fwrite(dirbuf, (int)dirloc, 1, df);
438	seekpt = ftell(df);
439	dirloc = 0;
440}
441
442static void
443dcvt(odp, ndp)
444	register struct odirect *odp;
445	register struct direct *ndp;
446{
447
448	memset(ndp, 0, (long)(sizeof *ndp));
449	ndp->d_ino =  odp->d_ino;
450	ndp->d_type = DT_UNKNOWN;
451	(void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ);
452	ndp->d_namlen = strlen(ndp->d_name);
453	ndp->d_reclen = DIRSIZ(0, ndp);
454}
455
456/*
457 * Seek to an entry in a directory.
458 * Only values returned by rst_telldir should be passed to rst_seekdir.
459 * This routine handles many directories in a single file.
460 * It takes the base of the directory in the file, plus
461 * the desired seek offset into it.
462 */
463static void
464rst_seekdir(dirp, loc, base)
465	register RST_DIR *dirp;
466	long loc, base;
467{
468
469	if (loc == rst_telldir(dirp))
470		return;
471	loc -= base;
472	if (loc < 0)
473		fprintf(stderr, "bad seek pointer to rst_seekdir %d\n", loc);
474	(void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET);
475	dirp->dd_loc = loc & (DIRBLKSIZ - 1);
476	if (dirp->dd_loc != 0)
477		dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
478}
479
480/*
481 * get next entry in a directory.
482 */
483struct direct *
484rst_readdir(dirp)
485	register RST_DIR *dirp;
486{
487	register struct direct *dp;
488
489	for (;;) {
490		if (dirp->dd_loc == 0) {
491			dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
492			    DIRBLKSIZ);
493			if (dirp->dd_size <= 0) {
494				dprintf(stderr, "error reading directory\n");
495				return (NULL);
496			}
497		}
498		if (dirp->dd_loc >= dirp->dd_size) {
499			dirp->dd_loc = 0;
500			continue;
501		}
502		dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
503		if (dp->d_reclen == 0 ||
504		    dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
505			dprintf(stderr, "corrupted directory: bad reclen %d\n",
506				dp->d_reclen);
507			return (NULL);
508		}
509		dirp->dd_loc += dp->d_reclen;
510		if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
511			return (NULL);
512		if (dp->d_ino >= maxino) {
513			dprintf(stderr, "corrupted directory: bad inum %d\n",
514				dp->d_ino);
515			continue;
516		}
517		return (dp);
518	}
519}
520
521/*
522 * Simulate the opening of a directory
523 */
524RST_DIR *
525rst_opendir(name)
526	const char *name;
527{
528	struct inotab *itp;
529	RST_DIR *dirp;
530	ino_t ino;
531
532	if ((ino = dirlookup(name)) > 0 &&
533	    (itp = inotablookup(ino)) != NULL) {
534		dirp = opendirfile(dirfile);
535		rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
536		return (dirp);
537	}
538	return (NULL);
539}
540
541/*
542 * In our case, there is nothing to do when closing a directory.
543 */
544void
545rst_closedir(dirp)
546	RST_DIR *dirp;
547{
548
549	(void)close(dirp->dd_fd);
550	free(dirp);
551	return;
552}
553
554/*
555 * Simulate finding the current offset in the directory.
556 */
557static long
558rst_telldir(dirp)
559	RST_DIR *dirp;
560{
561	return ((long)lseek(dirp->dd_fd,
562	    (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
563}
564
565/*
566 * Open a directory file.
567 */
568static RST_DIR *
569opendirfile(name)
570	const char *name;
571{
572	register RST_DIR *dirp;
573	register int fd;
574
575	if ((fd = open(name, O_RDONLY)) == -1)
576		return (NULL);
577	if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
578		(void)close(fd);
579		return (NULL);
580	}
581	dirp->dd_fd = fd;
582	dirp->dd_loc = 0;
583	return (dirp);
584}
585
586/*
587 * Set the mode, owner, and times for all new or changed directories
588 */
589void
590setdirmodes(flags)
591	int flags;
592{
593	FILE *mf;
594	struct modeinfo node;
595	struct entry *ep;
596	char *cp;
597
598	vprintf(stdout, "Set directory mode, owner, and times.\n");
599	if (command == 'r' || command == 'R')
600		(void) sprintf(modefile, "%srstmode%d", _PATH_TMP, dumpdate);
601	if (modefile[0] == '#') {
602		panic("modefile not defined\n");
603		fprintf(stderr, "directory mode, owner, and times not set\n");
604		return;
605	}
606	mf = fopen(modefile, "r");
607	if (mf == NULL) {
608		fprintf(stderr, "fopen: %s\n", strerror(errno));
609		fprintf(stderr, "cannot open mode file %s\n", modefile);
610		fprintf(stderr, "directory mode, owner, and times not set\n");
611		return;
612	}
613	clearerr(mf);
614	for (;;) {
615		(void) fread((char *)&node, 1, sizeof(struct modeinfo), mf);
616		if (feof(mf))
617			break;
618		ep = lookupino(node.ino);
619		if (command == 'i' || command == 'x') {
620			if (ep == NULL)
621				continue;
622			if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
623				ep->e_flags &= ~NEW;
624				continue;
625			}
626			if (node.ino == ROOTINO &&
627		   	    reply("set owner/mode for '.'") == FAIL)
628				continue;
629		}
630		if (ep == NULL) {
631			panic("cannot find directory inode %d\n", node.ino);
632		} else {
633			cp = myname(ep);
634			(void) chown(cp, node.uid, node.gid);
635			(void) chmod(cp, node.mode);
636			(void) chflags(cp, node.flags);
637			utimes(cp, node.timep);
638			ep->e_flags &= ~NEW;
639		}
640	}
641	if (ferror(mf))
642		panic("error setting directory modes\n");
643	(void) fclose(mf);
644}
645
646/*
647 * Generate a literal copy of a directory.
648 */
649int
650genliteraldir(name, ino)
651	char *name;
652	ino_t ino;
653{
654	register struct inotab *itp;
655	int ofile, dp, i, size;
656	char buf[BUFSIZ];
657
658	itp = inotablookup(ino);
659	if (itp == NULL)
660		panic("Cannot find directory inode %d named %s\n", ino, name);
661	if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
662		fprintf(stderr, "%s: ", name);
663		(void) fflush(stderr);
664		fprintf(stderr, "cannot create file: %s\n", strerror(errno));
665		return (FAIL);
666	}
667	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
668	dp = dup(dirp->dd_fd);
669	for (i = itp->t_size; i > 0; i -= BUFSIZ) {
670		size = i < BUFSIZ ? i : BUFSIZ;
671		if (read(dp, buf, (int) size) == -1) {
672			fprintf(stderr,
673				"write error extracting inode %d, name %s\n",
674				curfile.ino, curfile.name);
675			fprintf(stderr, "read: %s\n", strerror(errno));
676			done(1);
677		}
678		if (!Nflag && write(ofile, buf, (int) size) == -1) {
679			fprintf(stderr,
680				"write error extracting inode %d, name %s\n",
681				curfile.ino, curfile.name);
682			fprintf(stderr, "write: %s\n", strerror(errno));
683			done(1);
684		}
685	}
686	(void) close(dp);
687	(void) close(ofile);
688	return (GOOD);
689}
690
691/*
692 * Determine the type of an inode
693 */
694int
695inodetype(ino)
696	ino_t ino;
697{
698	struct inotab *itp;
699
700	itp = inotablookup(ino);
701	if (itp == NULL)
702		return (LEAF);
703	return (NODE);
704}
705
706/*
707 * Allocate and initialize a directory inode entry.
708 * If requested, save its pertinent mode, owner, and time info.
709 */
710static struct inotab *
711allocinotab(ino, dip, seekpt)
712	ino_t ino;
713	struct dinode *dip;
714	long seekpt;
715{
716	register struct inotab	*itp;
717	struct modeinfo node;
718
719	itp = calloc(1, sizeof(struct inotab));
720	if (itp == NULL)
721		panic("no memory directory table\n");
722	itp->t_next = inotab[INOHASH(ino)];
723	inotab[INOHASH(ino)] = itp;
724	itp->t_ino = ino;
725	itp->t_seekpt = seekpt;
726	if (mf == NULL)
727		return (itp);
728	node.ino = ino;
729	node.timep[0].tv_sec = dip->di_atime;
730	node.timep[0].tv_usec = dip->di_atimensec / 1000;
731	node.timep[1].tv_sec = dip->di_mtime;
732	node.timep[1].tv_usec = dip->di_mtimensec / 1000;
733	node.mode = dip->di_mode;
734	node.flags = dip->di_flags;
735	node.uid = dip->di_uid;
736	node.gid = dip->di_gid;
737	(void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf);
738	return (itp);
739}
740
741/*
742 * Look up an inode in the table of directories
743 */
744static struct inotab *
745inotablookup(ino)
746	ino_t	ino;
747{
748	register struct inotab *itp;
749
750	for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
751		if (itp->t_ino == ino)
752			return (itp);
753	return (NULL);
754}
755
756/*
757 * Clean up and exit
758 */
759void
760done(exitcode)
761	int exitcode;
762{
763
764	closemt();
765	if (modefile[0] != '#')
766		(void) unlink(modefile);
767	if (dirfile[0] != '#')
768		(void) unlink(dirfile);
769	exit(exitcode);
770}
771