dirs.c revision 129666
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 * 4. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef lint
36#if 0
37static char sccsid[] = "@(#)dirs.c	8.7 (Berkeley) 5/1/95";
38#endif
39static const char rcsid[] =
40  "$FreeBSD: head/sbin/restore/dirs.c 129666 2004-05-24 16:24:26Z stefanf $";
41#endif /* not lint */
42
43#include <sys/param.h>
44#include <sys/file.h>
45#include <sys/stat.h>
46#include <sys/time.h>
47
48#include <ufs/ufs/dinode.h>
49#include <ufs/ufs/dir.h>
50#include <protocols/dumprestore.h>
51
52#include <err.h>
53#include <errno.h>
54#include <limits.h>
55#include <paths.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <unistd.h>
60
61#include "restore.h"
62#include "extern.h"
63
64/*
65 * Symbol table of directories read from tape.
66 */
67#define HASHSIZE	1000
68#define INOHASH(val) (val % HASHSIZE)
69struct inotab {
70	struct	inotab *t_next;
71	ino_t	t_ino;
72	int32_t	t_seekpt;
73	int32_t	t_size;
74};
75static struct inotab *inotab[HASHSIZE];
76
77/*
78 * Information retained about directories.
79 */
80struct modeinfo {
81	ino_t ino;
82	struct timeval ctimep[2];
83	struct timeval mtimep[2];
84	mode_t mode;
85	uid_t uid;
86	gid_t gid;
87	int flags;
88};
89
90/*
91 * Definitions for library routines operating on directories.
92 */
93#undef DIRBLKSIZ
94#define DIRBLKSIZ 1024
95struct rstdirdesc {
96	int	dd_fd;
97	int32_t	dd_loc;
98	int32_t	dd_size;
99	char	dd_buf[DIRBLKSIZ];
100};
101
102/*
103 * Global variables for this file.
104 */
105static long	seekpt;
106static FILE	*df, *mf;
107static RST_DIR	*dirp;
108static char	dirfile[MAXPATHLEN] = "#";	/* No file */
109static char	modefile[MAXPATHLEN] = "#";	/* No file */
110static char	dot[2] = ".";			/* So it can be modified */
111
112/*
113 * Format of old style directories.
114 */
115#define ODIRSIZ 14
116struct odirect {
117	u_short	d_ino;
118	char	d_name[ODIRSIZ];
119};
120
121static struct inotab	*allocinotab(struct context *, long);
122static void		 dcvt(struct odirect *, struct direct *);
123static void		 flushent(void);
124static struct inotab	*inotablookup(ino_t);
125static RST_DIR		*opendirfile(const char *);
126static void		 putdir(char *, long);
127static void		 putent(struct direct *);
128static void		 rst_seekdir(RST_DIR *, long, long);
129static long		 rst_telldir(RST_DIR *);
130static struct direct	*searchdir(ino_t, char *);
131
132/*
133 *	Extract directory contents, building up a directory structure
134 *	on disk for extraction by name.
135 *	If genmode is requested, save mode, owner, and times for all
136 *	directories on the tape.
137 */
138void
139extractdirs(int genmode)
140{
141	struct inotab *itp;
142	struct direct nulldir;
143	int i, fd;
144	const char *tmpdir;
145
146	vprintf(stdout, "Extract directories from tape\n");
147	if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0')
148		tmpdir = _PATH_TMP;
149	(void) sprintf(dirfile, "%s/rstdir%d", tmpdir, dumpdate);
150	if (command != 'r' && command != 'R') {
151		(void *) strcat(dirfile, "-XXXXXX");
152		fd = mkstemp(dirfile);
153	} else
154		fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
155	if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
156		if (fd != -1)
157			close(fd);
158		warn("%s - cannot create directory temporary\nfopen", dirfile);
159		done(1);
160	}
161	if (genmode != 0) {
162		(void) sprintf(modefile, "%s/rstmode%d", tmpdir, dumpdate);
163		if (command != 'r' && command != 'R') {
164			(void *) strcat(modefile, "-XXXXXX");
165			fd = mkstemp(modefile);
166		} else
167			fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
168		if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
169			if (fd != -1)
170				close(fd);
171			warn("%s - cannot create modefile\nfopen", modefile);
172			done(1);
173		}
174	}
175	nulldir.d_ino = 0;
176	nulldir.d_type = DT_DIR;
177	nulldir.d_namlen = 1;
178	(void) strcpy(nulldir.d_name, "/");
179	nulldir.d_reclen = DIRSIZ(0, &nulldir);
180	for (;;) {
181		curfile.name = "<directory file - name unknown>";
182		curfile.action = USING;
183		if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR) {
184			(void) fclose(df);
185			dirp = opendirfile(dirfile);
186			if (dirp == NULL)
187				fprintf(stderr, "opendirfile: %s\n",
188				    strerror(errno));
189			if (mf != NULL)
190				(void) fclose(mf);
191			i = dirlookup(dot);
192			if (i == 0)
193				panic("Root directory is not on tape\n");
194			return;
195		}
196		itp = allocinotab(&curfile, seekpt);
197		getfile(putdir, xtrnull);
198		putent(&nulldir);
199		flushent();
200		itp->t_size = seekpt - itp->t_seekpt;
201	}
202}
203
204/*
205 * skip over all the directories on the tape
206 */
207void
208skipdirs(void)
209{
210
211	while (curfile.ino && (curfile.mode & IFMT) == IFDIR) {
212		skipfile();
213	}
214}
215
216/*
217 *	Recursively find names and inumbers of all files in subtree
218 *	pname and pass them off to be processed.
219 */
220void
221treescan(char *pname, ino_t ino, long (*todo)(char *, ino_t, int))
222{
223	struct inotab *itp;
224	struct direct *dp;
225	int namelen;
226	long bpt;
227	char locname[MAXPATHLEN + 1];
228
229	itp = inotablookup(ino);
230	if (itp == NULL) {
231		/*
232		 * Pname is name of a simple file or an unchanged directory.
233		 */
234		(void) (*todo)(pname, ino, LEAF);
235		return;
236	}
237	/*
238	 * Pname is a dumped directory name.
239	 */
240	if ((*todo)(pname, ino, NODE) == FAIL)
241		return;
242	/*
243	 * begin search through the directory
244	 * skipping over "." and ".."
245	 */
246	(void) strncpy(locname, pname, sizeof(locname) - 1);
247	locname[sizeof(locname) - 1] = '\0';
248	(void) strncat(locname, "/", sizeof(locname) - strlen(locname));
249	namelen = strlen(locname);
250	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
251	dp = rst_readdir(dirp); /* "." */
252	if (dp != NULL && strcmp(dp->d_name, ".") == 0)
253		dp = rst_readdir(dirp); /* ".." */
254	else
255		fprintf(stderr, "Warning: `.' missing from directory %s\n",
256			pname);
257	if (dp != NULL && strcmp(dp->d_name, "..") == 0)
258		dp = rst_readdir(dirp); /* first real entry */
259	else
260		fprintf(stderr, "Warning: `..' missing from directory %s\n",
261			pname);
262	bpt = rst_telldir(dirp);
263	/*
264	 * a zero inode signals end of directory
265	 */
266	while (dp != NULL) {
267		locname[namelen] = '\0';
268		if (namelen + dp->d_namlen >= sizeof(locname)) {
269			fprintf(stderr, "%s%s: name exceeds %d char\n",
270				locname, dp->d_name, sizeof(locname) - 1);
271		} else {
272			(void) strncat(locname, dp->d_name, (int)dp->d_namlen);
273			treescan(locname, dp->d_ino, todo);
274			rst_seekdir(dirp, bpt, itp->t_seekpt);
275		}
276		dp = rst_readdir(dirp);
277		bpt = rst_telldir(dirp);
278	}
279}
280
281/*
282 * Lookup a pathname which is always assumed to start from the ROOTINO.
283 */
284struct direct *
285pathsearch(const char *pathname)
286{
287	ino_t ino;
288	struct direct *dp;
289	char *path, *name, buffer[MAXPATHLEN];
290
291	strcpy(buffer, pathname);
292	path = buffer;
293	ino = ROOTINO;
294	while (*path == '/')
295		path++;
296	dp = NULL;
297	while ((name = strsep(&path, "/")) != NULL && *name != '\0') {
298		if ((dp = searchdir(ino, name)) == NULL)
299			return (NULL);
300		ino = dp->d_ino;
301	}
302	return (dp);
303}
304
305/*
306 * Lookup the requested name in directory inum.
307 * Return its inode number if found, zero if it does not exist.
308 */
309static struct direct *
310searchdir(ino_t	inum, char *name)
311{
312	struct direct *dp;
313	struct inotab *itp;
314	int len;
315
316	itp = inotablookup(inum);
317	if (itp == NULL)
318		return (NULL);
319	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
320	len = strlen(name);
321	do {
322		dp = rst_readdir(dirp);
323		if (dp == NULL)
324			return (NULL);
325	} while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
326	return (dp);
327}
328
329/*
330 * Put the directory entries in the directory file
331 */
332static void
333putdir(char *buf, long size)
334{
335	struct direct cvtbuf;
336	struct odirect *odp;
337	struct odirect *eodp;
338	struct direct *dp;
339	long loc, i;
340
341	for (loc = 0; loc < size; ) {
342		dp = (struct direct *)(buf + loc);
343		if (Bcvt)
344			swabst((u_char *)"ls", (u_char *) dp);
345		i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
346		if ((dp->d_reclen & 0x3) != 0 ||
347		    dp->d_reclen > i ||
348		    dp->d_reclen < DIRSIZ(0, dp)
349#if NAME_MAX < 255
350		    || dp->d_namlen > NAME_MAX
351#endif
352		    ) {
353			vprintf(stdout, "Mangled directory: ");
354			if ((dp->d_reclen & 0x3) != 0)
355				vprintf(stdout,
356				   "reclen not multiple of 4 ");
357			if (dp->d_reclen < DIRSIZ(0, dp))
358				vprintf(stdout,
359				   "reclen less than DIRSIZ (%d < %d) ",
360				   dp->d_reclen, DIRSIZ(0, dp));
361#if NAME_MAX < 255
362			if (dp->d_namlen > NAME_MAX)
363				vprintf(stdout,
364				   "reclen name too big (%d > %d) ",
365				   dp->d_namlen, NAME_MAX);
366#endif
367			vprintf(stdout, "\n");
368			loc += i;
369			continue;
370		}
371		loc += dp->d_reclen;
372		if (dp->d_ino != 0) {
373			putent(dp);
374		}
375	}
376}
377
378/*
379 * These variables are "local" to the following two functions.
380 */
381char dirbuf[DIRBLKSIZ];
382long dirloc = 0;
383long prev = 0;
384
385/*
386 * add a new directory entry to a file.
387 */
388static void
389putent(struct direct *dp)
390{
391	dp->d_reclen = DIRSIZ(0, dp);
392	if (dirloc + dp->d_reclen > DIRBLKSIZ) {
393		((struct direct *)(dirbuf + prev))->d_reclen =
394		    DIRBLKSIZ - prev;
395		(void) fwrite(dirbuf, 1, DIRBLKSIZ, df);
396		dirloc = 0;
397	}
398	memmove(dirbuf + dirloc, dp, (long)dp->d_reclen);
399	prev = dirloc;
400	dirloc += dp->d_reclen;
401}
402
403/*
404 * flush out a directory that is finished.
405 */
406static void
407flushent(void)
408{
409	((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
410	(void) fwrite(dirbuf, (int)dirloc, 1, df);
411	seekpt = ftell(df);
412	dirloc = 0;
413}
414
415static void
416dcvt(struct odirect *odp, struct direct *ndp)
417{
418
419	memset(ndp, 0, (long)(sizeof *ndp));
420	ndp->d_ino =  odp->d_ino;
421	ndp->d_type = DT_UNKNOWN;
422	(void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ);
423	ndp->d_namlen = strlen(ndp->d_name);
424	ndp->d_reclen = DIRSIZ(0, ndp);
425}
426
427/*
428 * Seek to an entry in a directory.
429 * Only values returned by rst_telldir should be passed to rst_seekdir.
430 * This routine handles many directories in a single file.
431 * It takes the base of the directory in the file, plus
432 * the desired seek offset into it.
433 */
434static void
435rst_seekdir(RST_DIR *dirp, long loc, long base)
436{
437
438	if (loc == rst_telldir(dirp))
439		return;
440	loc -= base;
441	if (loc < 0)
442		fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc);
443	(void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET);
444	dirp->dd_loc = loc & (DIRBLKSIZ - 1);
445	if (dirp->dd_loc != 0)
446		dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
447}
448
449/*
450 * get next entry in a directory.
451 */
452struct direct *
453rst_readdir(RST_DIR *dirp)
454{
455	struct direct *dp;
456
457	for (;;) {
458		if (dirp->dd_loc == 0) {
459			dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
460			    DIRBLKSIZ);
461			if (dirp->dd_size <= 0) {
462				dprintf(stderr, "error reading directory\n");
463				return (NULL);
464			}
465		}
466		if (dirp->dd_loc >= dirp->dd_size) {
467			dirp->dd_loc = 0;
468			continue;
469		}
470		dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
471		if (dp->d_reclen == 0 ||
472		    dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
473			dprintf(stderr, "corrupted directory: bad reclen %d\n",
474				dp->d_reclen);
475			return (NULL);
476		}
477		dirp->dd_loc += dp->d_reclen;
478		if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
479			return (NULL);
480		if (dp->d_ino >= maxino) {
481			dprintf(stderr, "corrupted directory: bad inum %d\n",
482				dp->d_ino);
483			continue;
484		}
485		return (dp);
486	}
487}
488
489/*
490 * Simulate the opening of a directory
491 */
492void *
493rst_opendir(const char *name)
494{
495	struct inotab *itp;
496	RST_DIR *dirp;
497	ino_t ino;
498
499	if ((ino = dirlookup(name)) > 0 &&
500	    (itp = inotablookup(ino)) != NULL) {
501		dirp = opendirfile(dirfile);
502		rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
503		return (dirp);
504	}
505	return (NULL);
506}
507
508/*
509 * In our case, there is nothing to do when closing a directory.
510 */
511void
512rst_closedir(void *arg)
513{
514	RST_DIR *dirp;
515
516	dirp = arg;
517	(void)close(dirp->dd_fd);
518	free(dirp);
519	return;
520}
521
522/*
523 * Simulate finding the current offset in the directory.
524 */
525static long
526rst_telldir(RST_DIR *dirp)
527{
528	return ((long)lseek(dirp->dd_fd,
529	    (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
530}
531
532/*
533 * Open a directory file.
534 */
535static RST_DIR *
536opendirfile(const char *name)
537{
538	RST_DIR *dirp;
539	int fd;
540
541	if ((fd = open(name, O_RDONLY)) == -1)
542		return (NULL);
543	if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
544		(void)close(fd);
545		return (NULL);
546	}
547	dirp->dd_fd = fd;
548	dirp->dd_loc = 0;
549	return (dirp);
550}
551
552/*
553 * Set the mode, owner, and times for all new or changed directories
554 */
555void
556setdirmodes(int flags)
557{
558	FILE *mf;
559	struct modeinfo node;
560	struct entry *ep;
561	char *cp;
562	const char *tmpdir;
563
564	vprintf(stdout, "Set directory mode, owner, and times.\n");
565	if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0')
566		tmpdir = _PATH_TMP;
567	if (command == 'r' || command == 'R')
568		(void) sprintf(modefile, "%s/rstmode%d", tmpdir, dumpdate);
569	if (modefile[0] == '#') {
570		panic("modefile not defined\n");
571		fprintf(stderr, "directory mode, owner, and times not set\n");
572		return;
573	}
574	mf = fopen(modefile, "r");
575	if (mf == NULL) {
576		fprintf(stderr, "fopen: %s\n", strerror(errno));
577		fprintf(stderr, "cannot open mode file %s\n", modefile);
578		fprintf(stderr, "directory mode, owner, and times not set\n");
579		return;
580	}
581	clearerr(mf);
582	for (;;) {
583		(void) fread((char *)&node, 1, sizeof(struct modeinfo), mf);
584		if (feof(mf))
585			break;
586		ep = lookupino(node.ino);
587		if (command == 'i' || command == 'x') {
588			if (ep == NULL)
589				continue;
590			if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
591				ep->e_flags &= ~NEW;
592				continue;
593			}
594			if (node.ino == ROOTINO &&
595		   	    reply("set owner/mode for '.'") == FAIL)
596				continue;
597		}
598		if (ep == NULL) {
599			panic("cannot find directory inode %d\n", node.ino);
600		} else {
601			cp = myname(ep);
602			if (!Nflag) {
603				(void) chown(cp, node.uid, node.gid);
604				(void) chmod(cp, node.mode);
605				utimes(cp, node.ctimep);
606				utimes(cp, node.mtimep);
607				(void) chflags(cp, node.flags);
608			}
609			ep->e_flags &= ~NEW;
610		}
611	}
612	if (ferror(mf))
613		panic("error setting directory modes\n");
614	(void) fclose(mf);
615}
616
617/*
618 * Generate a literal copy of a directory.
619 */
620int
621genliteraldir(char *name, ino_t ino)
622{
623	struct inotab *itp;
624	int ofile, dp, i, size;
625	char buf[BUFSIZ];
626
627	itp = inotablookup(ino);
628	if (itp == NULL)
629		panic("Cannot find directory inode %d named %s\n", ino, name);
630	if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
631		fprintf(stderr, "%s: ", name);
632		(void) fflush(stderr);
633		fprintf(stderr, "cannot create file: %s\n", strerror(errno));
634		return (FAIL);
635	}
636	rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
637	dp = dup(dirp->dd_fd);
638	for (i = itp->t_size; i > 0; i -= BUFSIZ) {
639		size = i < BUFSIZ ? i : BUFSIZ;
640		if (read(dp, buf, (int) size) == -1) {
641			fprintf(stderr,
642				"write error extracting inode %d, name %s\n",
643				curfile.ino, curfile.name);
644			fprintf(stderr, "read: %s\n", strerror(errno));
645			done(1);
646		}
647		if (!Nflag && write(ofile, buf, (int) size) == -1) {
648			fprintf(stderr,
649				"write error extracting inode %d, name %s\n",
650				curfile.ino, curfile.name);
651			fprintf(stderr, "write: %s\n", strerror(errno));
652			done(1);
653		}
654	}
655	(void) close(dp);
656	(void) close(ofile);
657	return (GOOD);
658}
659
660/*
661 * Determine the type of an inode
662 */
663int
664inodetype(ino_t ino)
665{
666	struct inotab *itp;
667
668	itp = inotablookup(ino);
669	if (itp == NULL)
670		return (LEAF);
671	return (NODE);
672}
673
674/*
675 * Allocate and initialize a directory inode entry.
676 * If requested, save its pertinent mode, owner, and time info.
677 */
678static struct inotab *
679allocinotab(struct context *ctxp, long seekpt)
680{
681	struct inotab	*itp;
682	struct modeinfo node;
683
684	itp = calloc(1, sizeof(struct inotab));
685	if (itp == NULL)
686		panic("no memory directory table\n");
687	itp->t_next = inotab[INOHASH(ctxp->ino)];
688	inotab[INOHASH(ctxp->ino)] = itp;
689	itp->t_ino = ctxp->ino;
690	itp->t_seekpt = seekpt;
691	if (mf == NULL)
692		return (itp);
693	node.ino = ctxp->ino;
694	node.mtimep[0].tv_sec = ctxp->atime_sec;
695	node.mtimep[0].tv_usec = ctxp->atime_nsec / 1000;
696	node.mtimep[1].tv_sec = ctxp->mtime_sec;
697	node.mtimep[1].tv_usec = ctxp->mtime_nsec / 1000;
698	node.ctimep[0].tv_sec = ctxp->atime_sec;
699	node.ctimep[0].tv_usec = ctxp->atime_nsec / 1000;
700	node.ctimep[1].tv_sec = ctxp->birthtime_sec;
701	node.ctimep[1].tv_usec = ctxp->birthtime_nsec / 1000;
702	node.mode = ctxp->mode;
703	node.flags = ctxp->file_flags;
704	node.uid = ctxp->uid;
705	node.gid = ctxp->gid;
706	(void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf);
707	return (itp);
708}
709
710/*
711 * Look up an inode in the table of directories
712 */
713static struct inotab *
714inotablookup(ino_t ino)
715{
716	struct inotab *itp;
717
718	for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
719		if (itp->t_ino == ino)
720			return (itp);
721	return (NULL);
722}
723
724/*
725 * Clean up and exit
726 */
727void
728done(int exitcode)
729{
730
731	closemt();
732	if (modefile[0] != '#')
733		(void) unlink(modefile);
734	if (dirfile[0] != '#')
735		(void) unlink(dirfile);
736	exit(exitcode);
737}
738