[unix-history] / usr / src / sbin / fsck / pass2.c

/*
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)pass2.c	8.1 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>
#include <stdlib.h>
#include <string.h>
#include "fsck.h"

#define MINDIRSIZE	(sizeof (struct dirtemplate))

int	pass2check(), blksort();

pass2()
{
	register struct dinode *dp;
	register struct inoinfo **inpp, *inp;
	struct inoinfo **inpend;
	struct inodesc curino;
	struct dinode dino;
	char pathbuf[MAXPATHLEN + 1];

	switch (statemap[ROOTINO]) {

	case USTATE:
		pfatal("ROOT INODE UNALLOCATED");
		if (reply("ALLOCATE") == 0)
			errexit("");
		if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
			errexit("CANNOT ALLOCATE ROOT INODE\n");
		break;

	case DCLEAR:
		pfatal("DUPS/BAD IN ROOT INODE");
		if (reply("REALLOCATE")) {
			freeino(ROOTINO);
			if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
				errexit("CANNOT ALLOCATE ROOT INODE\n");
			break;
		}
		if (reply("CONTINUE") == 0)
			errexit("");
		break;

	case FSTATE:
	case FCLEAR:
		pfatal("ROOT INODE NOT DIRECTORY");
		if (reply("REALLOCATE")) {
			freeino(ROOTINO);
			if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
				errexit("CANNOT ALLOCATE ROOT INODE\n");
			break;
		}
		if (reply("FIX") == 0)
			errexit("");
		dp = ginode(ROOTINO);
		dp->di_mode &= ~IFMT;
		dp->di_mode |= IFDIR;
		inodirty();
		break;

	case DSTATE:
		break;

	default:
		errexit("BAD STATE %d FOR ROOT INODE", statemap[ROOTINO]);
	}
	statemap[ROOTINO] = DFOUND;
	/*
	 * Sort the directory list into disk block order.
	 */
	qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort);
	/*
	 * Check the integrity of each directory.
	 */
	bzero((char *)&curino, sizeof(struct inodesc));
	curino.id_type = DATA;
	curino.id_func = pass2check;
	dino.di_mode = IFDIR;
	dp = &dino;
	inpend = &inpsort[inplast];
	for (inpp = inpsort; inpp < inpend; inpp++) {
		inp = *inpp;
		if (inp->i_isize == 0)
			continue;
		if (inp->i_isize < MINDIRSIZE) {
			direrror(inp->i_number, "DIRECTORY TOO SHORT");
			inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ);
			if (reply("FIX") == 1) {
				dp = ginode(inp->i_number);
				dp->di_size = inp->i_isize;
				inodirty();
				dp = &dino;
			}
		} else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) {
			getpathname(pathbuf, inp->i_number, inp->i_number);
			pwarn("DIRECTORY %s: LENGTH %d NOT MULTIPLE OF %d",
				pathbuf, inp->i_isize, DIRBLKSIZ);
			if (preen)
				printf(" (ADJUSTED)\n");
			inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ);
			if (preen || reply("ADJUST") == 1) {
				dp = ginode(inp->i_number);
				dp->di_size = roundup(inp->i_isize, DIRBLKSIZ);
				inodirty();
				dp = &dino;
			}
		}
		dp->di_size = inp->i_isize;
		bcopy((char *)&inp->i_blks[0], (char *)&dp->di_db[0],
			(size_t)inp->i_numblks);
		curino.id_number = inp->i_number;
		curino.id_parent = inp->i_parent;
		(void)ckinode(dp, &curino);
	}
	/*
	 * Now that the parents of all directories have been found,
	 * make another pass to verify the value of `..'
	 */
	for (inpp = inpsort; inpp < inpend; inpp++) {
		inp = *inpp;
		if (inp->i_parent == 0 || inp->i_isize == 0)
			continue;
		if (statemap[inp->i_parent] == DFOUND &&
		    statemap[inp->i_number] == DSTATE)
			statemap[inp->i_number] = DFOUND;
		if (inp->i_dotdot == inp->i_parent ||
		    inp->i_dotdot == (ino_t)-1)
			continue;
		if (inp->i_dotdot == 0) {
			inp->i_dotdot = inp->i_parent;
			fileerror(inp->i_parent, inp->i_number, "MISSING '..'");
			if (reply("FIX") == 0)
				continue;
			(void)makeentry(inp->i_number, inp->i_parent, "..");
			lncntp[inp->i_parent]--;
			continue;
		}
		fileerror(inp->i_parent, inp->i_number,
		    "BAD INODE NUMBER FOR '..'");
		if (reply("FIX") == 0)
			continue;
		lncntp[inp->i_dotdot]++;
		lncntp[inp->i_parent]--;
		inp->i_dotdot = inp->i_parent;
		(void)changeino(inp->i_number, "..", inp->i_parent);
	}
	/*
	 * Mark all the directories that can be found from the root.
	 */
	propagate();
}

pass2check(idesc)
	struct inodesc *idesc;
{
	register struct direct *dirp = idesc->id_dirp;
	register struct inoinfo *inp;
	int n, entrysize, ret = 0;
	struct dinode *dp;
	char *errmsg;
	struct direct proto;
	char namebuf[MAXPATHLEN + 1];
	char pathbuf[MAXPATHLEN + 1];

	/*
	 * If converting, set directory entry type.
	 */
	if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) {
		dirp->d_type = typemap[dirp->d_ino];
		ret |= ALTERED;
	}
	/* 
	 * check for "."
	 */
	if (idesc->id_entryno != 0)
		goto chk1;
	if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) {
		if (dirp->d_ino != idesc->id_number) {
			direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
			dirp->d_ino = idesc->id_number;
			if (reply("FIX") == 1)
				ret |= ALTERED;
		}
		if (newinofmt && dirp->d_type != DT_DIR) {
			direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
			dirp->d_type = DT_DIR;
			if (reply("FIX") == 1)
				ret |= ALTERED;
		}
		goto chk1;
	}
	direrror(idesc->id_number, "MISSING '.'");
	proto.d_ino = idesc->id_number;
	if (newinofmt)
		proto.d_type = DT_DIR;
	else
		proto.d_type = 0;
	proto.d_namlen = 1;
	(void)strcpy(proto.d_name, ".");
	entrysize = DIRSIZ(0, &proto);
	if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) {
		pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
			dirp->d_name);
	} else if (dirp->d_reclen < entrysize) {
		pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
	} else if (dirp->d_reclen < 2 * entrysize) {
		proto.d_reclen = dirp->d_reclen;
		bcopy((char *)&proto, (char *)dirp, (size_t)entrysize);
		if (reply("FIX") == 1)
			ret |= ALTERED;
	} else {
		n = dirp->d_reclen - entrysize;
		proto.d_reclen = entrysize;
		bcopy((char *)&proto, (char *)dirp, (size_t)entrysize);
		idesc->id_entryno++;
		lncntp[dirp->d_ino]--;
		dirp = (struct direct *)((char *)(dirp) + entrysize);
		bzero((char *)dirp, (size_t)n);
		dirp->d_reclen = n;
		if (reply("FIX") == 1)
			ret |= ALTERED;
	}
chk1:
	if (idesc->id_entryno > 1)
		goto chk2;
	inp = getinoinfo(idesc->id_number);
	proto.d_ino = inp->i_parent;
	if (newinofmt)
		proto.d_type = DT_DIR;
	else
		proto.d_type = 0;
	proto.d_namlen = 2;
	(void)strcpy(proto.d_name, "..");
	entrysize = DIRSIZ(0, &proto);
	if (idesc->id_entryno == 0) {
		n = DIRSIZ(0, dirp);
		if (dirp->d_reclen < n + entrysize)
			goto chk2;
		proto.d_reclen = dirp->d_reclen - n;
		dirp->d_reclen = n;
		idesc->id_entryno++;
		lncntp[dirp->d_ino]--;
		dirp = (struct direct *)((char *)(dirp) + n);
		bzero((char *)dirp, (size_t)proto.d_reclen);
		dirp->d_reclen = proto.d_reclen;
	}
	if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) {
		inp->i_dotdot = dirp->d_ino;
		if (newinofmt && dirp->d_type != DT_DIR) {
			direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
			dirp->d_type = DT_DIR;
			if (reply("FIX") == 1)
				ret |= ALTERED;
		}
		goto chk2;
	}
	if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) {
		fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
		pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n",
			dirp->d_name);
		inp->i_dotdot = (ino_t)-1;
	} else if (dirp->d_reclen < entrysize) {
		fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
		pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n");
		inp->i_dotdot = (ino_t)-1;
	} else if (inp->i_parent != 0) {
		/*
		 * We know the parent, so fix now.
		 */
		inp->i_dotdot = inp->i_parent;
		fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
		proto.d_reclen = dirp->d_reclen;
		bcopy((char *)&proto, (char *)dirp, (size_t)entrysize);
		if (reply("FIX") == 1)
			ret |= ALTERED;
	}
	idesc->id_entryno++;
	if (dirp->d_ino != 0)
		lncntp[dirp->d_ino]--;
	return (ret|KEEPON);
chk2:
	if (dirp->d_ino == 0)
		return (ret|KEEPON);
	if (dirp->d_namlen <= 2 &&
	    dirp->d_name[0] == '.' &&
	    idesc->id_entryno >= 2) {
		if (dirp->d_namlen == 1) {
			direrror(idesc->id_number, "EXTRA '.' ENTRY");
			dirp->d_ino = 0;
			if (reply("FIX") == 1)
				ret |= ALTERED;
			return (KEEPON | ret);
		}
		if (dirp->d_name[1] == '.') {
			direrror(idesc->id_number, "EXTRA '..' ENTRY");
			dirp->d_ino = 0;
			if (reply("FIX") == 1)
				ret |= ALTERED;
			return (KEEPON | ret);
		}
	}
	idesc->id_entryno++;
	n = 0;
	if (dirp->d_ino > maxino) {
		fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE");
		n = reply("REMOVE");
	} else {
again:
		switch (statemap[dirp->d_ino]) {
		case USTATE:
			if (idesc->id_entryno <= 2)
				break;
			fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED");
			n = reply("REMOVE");
			break;

		case DCLEAR:
		case FCLEAR:
			if (idesc->id_entryno <= 2)
				break;
			if (statemap[dirp->d_ino] == FCLEAR)
				errmsg = "DUP/BAD";
			else if (!preen)
				errmsg = "ZERO LENGTH DIRECTORY";
			else {
				n = 1;
				break;
			}
			fileerror(idesc->id_number, dirp->d_ino, errmsg);
			if ((n = reply("REMOVE")) == 1)
				break;
			dp = ginode(dirp->d_ino);
			statemap[dirp->d_ino] =
			    (dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE;
			lncntp[dirp->d_ino] = dp->di_nlink;
			goto again;

		case DSTATE:
			if (statemap[idesc->id_number] == DFOUND)
				statemap[dirp->d_ino] = DFOUND;
			/* fall through */

		case DFOUND:
			inp = getinoinfo(dirp->d_ino);
			if (inp->i_parent != 0 && idesc->id_entryno > 2) {
				getpathname(pathbuf, idesc->id_number,
				    idesc->id_number);
				getpathname(namebuf, dirp->d_ino, dirp->d_ino);
				pwarn("%s %s %s\n", pathbuf,
				    "IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
				    namebuf);
				if (preen)
					printf(" (IGNORED)\n");
				else if ((n = reply("REMOVE")) == 1)
					break;
			}
			if (idesc->id_entryno > 2)
				inp->i_parent = idesc->id_number;
			/* fall through */

		case FSTATE:
			if (newinofmt && dirp->d_type != typemap[dirp->d_ino]) {
				fileerror(idesc->id_number, dirp->d_ino,
				    "BAD TYPE VALUE");
				dirp->d_type = typemap[dirp->d_ino];
				if (reply("FIX") == 1)
					ret |= ALTERED;
			}
			lncntp[dirp->d_ino]--;
			break;

		default:
			errexit("BAD STATE %d FOR INODE I=%d",
			    statemap[dirp->d_ino], dirp->d_ino);
		}
	}
	if (n == 0)
		return (ret|KEEPON);
	dirp->d_ino = 0;
	return (ret|KEEPON|ALTERED);
}

/*
 * Routine to sort disk blocks.
 */
blksort(inpp1, inpp2)
	struct inoinfo **inpp1, **inpp2;
{

	return ((*inpp1)->i_blks[0] - (*inpp2)->i_blks[0]);
}
Commit	Line	Data
76797561	1	/*
21e5ab9a KB	2	* Copyright (c) 1980, 1986, 1993
21e5ab9a KB	3	* The Regents of the University of California. All rights reserved.
fe32782c	4	*
70ab3c27	5	* %sccs.include.redist.c%
76797561 DF	6	*/
76797561 DF	7
ba8f3d8f	8	#ifndef lint
21e5ab9a	9	static char sccsid[] = "@(#)pass2.c 8.1 (Berkeley) %G%";
fe32782c	10	#endif /* not lint */
ba8f3d8f KM	11
ba8f3d8f KM	12	#include <sys/param.h>
b82067db	13	#include <sys/time.h>
558b3a30	14	#include <ufs/ufs/dinode.h>
558b3a30	15	#include <ufs/ufs/dir.h>
558b3a30	16	#include <ufs/ffs/fs.h>
d72e970b	17	#include <stdlib.h>
38dde0cd	18	#include <string.h>
ba8f3d8f KM	19	#include "fsck.h"
ba8f3d8f KM	20
987e77a3 KM	21	#define MINDIRSIZE (sizeof (struct dirtemplate))
	22
	23	int pass2check(), blksort();
ba8f3d8f KM	24
	25	pass2()
	26	{
569ec282	27	register struct dinode *dp;
987e77a3 KM	28	register struct inoinfo *inpp, inp;
	29	struct inoinfo **inpend;
	30	struct inodesc curino;
	31	struct dinode dino;
	32	char pathbuf[MAXPATHLEN + 1];
ba8f3d8f	33
ba8f3d8f KM	34	switch (statemap[ROOTINO]) {
	35
	36	case USTATE:
7e1e49f2 KM	37	pfatal("ROOT INODE UNALLOCATED");
	38	if (reply("ALLOCATE") == 0)
	39	errexit("");
c689da7b	40	if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
7e1e49f2	41	errexit("CANNOT ALLOCATE ROOT INODE\n");
7e1e49f2 KM	42	break;
	43
	44	case DCLEAR:
	45	pfatal("DUPS/BAD IN ROOT INODE");
	46	if (reply("REALLOCATE")) {
	47	freeino(ROOTINO);
c689da7b	48	if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
7e1e49f2	49	errexit("CANNOT ALLOCATE ROOT INODE\n");
7e1e49f2 KM	50	break;
	51	}
	52	if (reply("CONTINUE") == 0)
	53	errexit("");
7e1e49f2	54	break;
ba8f3d8f KM	55
ba8f3d8f KM	56	case FSTATE:
993a756c	57	case FCLEAR:
ba8f3d8f	58	pfatal("ROOT INODE NOT DIRECTORY");
7e1e49f2 KM	59	if (reply("REALLOCATE")) {
7e1e49f2 KM	60	freeino(ROOTINO);
c689da7b	61	if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
7e1e49f2	62	errexit("CANNOT ALLOCATE ROOT INODE\n");
7e1e49f2 KM	63	break;
7e1e49f2 KM	64	}
39c18287	65	if (reply("FIX") == 0)
ba8f3d8f	66	errexit("");
39c18287	67	dp = ginode(ROOTINO);
ba8f3d8f KM	68	dp->di_mode &= ~IFMT;
	69	dp->di_mode \|= IFDIR;
	70	inodirty();
987e77a3	71	break;
ba8f3d8f KM	72
ba8f3d8f KM	73	case DSTATE:
ba8f3d8f KM	74	break;
ba8f3d8f KM	75
993a756c KM	76	default:
993a756c KM	77	errexit("BAD STATE %d FOR ROOT INODE", statemap[ROOTINO]);
ba8f3d8f	78	}
987e77a3 KM	79	statemap[ROOTINO] = DFOUND;
	80	/*
	81	* Sort the directory list into disk block order.
	82	*/
d72e970b	83	qsort((char )inpsort, (size_t)inplast, sizeof inpsort, blksort);
987e77a3 KM	84	/*
	85	* Check the integrity of each directory.
	86	*/
	87	bzero((char *)&curino, sizeof(struct inodesc));
	88	curino.id_type = DATA;
	89	curino.id_func = pass2check;
7a11042a	90	dino.di_mode = IFDIR;
987e77a3 KM	91	dp = &dino;
	92	inpend = &inpsort[inplast];
	93	for (inpp = inpsort; inpp < inpend; inpp++) {
	94	inp = *inpp;
f13c3b57 KM	95	if (inp->i_isize == 0)
f13c3b57 KM	96	continue;
987e77a3 KM	97	if (inp->i_isize < MINDIRSIZE) {
987e77a3 KM	98	direrror(inp->i_number, "DIRECTORY TOO SHORT");
3017a9c8	99	inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ);
987e77a3 KM	100	if (reply("FIX") == 1) {
987e77a3 KM	101	dp = ginode(inp->i_number);
3017a9c8	102	dp->di_size = inp->i_isize;
987e77a3 KM	103	inodirty();
	104	dp = &dino;
	105	}
3017a9c8	106	} else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) {
987e77a3 KM	107	getpathname(pathbuf, inp->i_number, inp->i_number);
	108	pwarn("DIRECTORY %s: LENGTH %d NOT MULTIPLE OF %d",
	109	pathbuf, inp->i_isize, DIRBLKSIZ);
	110	if (preen)
	111	printf(" (ADJUSTED)\n");
	112	inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ);
	113	if (preen \|\| reply("ADJUST") == 1) {
	114	dp = ginode(inp->i_number);
	115	dp->di_size = roundup(inp->i_isize, DIRBLKSIZ);
	116	inodirty();
	117	dp = &dino;
	118	}
	119	}
	120	dp->di_size = inp->i_isize;
	121	bcopy((char )&inp->i_blks[0], (char )&dp->di_db[0],
d72e970b	122	(size_t)inp->i_numblks);
987e77a3 KM	123	curino.id_number = inp->i_number;
	124	curino.id_parent = inp->i_parent;
	125	(void)ckinode(dp, &curino);
	126	}
	127	/*
	128	* Now that the parents of all directories have been found,
	129	* make another pass to verify the value of `..'
	130	*/
	131	for (inpp = inpsort; inpp < inpend; inpp++) {
	132	inp = *inpp;
f13c3b57	133	if (inp->i_parent == 0 \|\| inp->i_isize == 0)
987e77a3 KM	134	continue;
	135	if (statemap[inp->i_parent] == DFOUND &&
	136	statemap[inp->i_number] == DSTATE)
	137	statemap[inp->i_number] = DFOUND;
	138	if (inp->i_dotdot == inp->i_parent \|\|
	139	inp->i_dotdot == (ino_t)-1)
	140	continue;
	141	if (inp->i_dotdot == 0) {
	142	inp->i_dotdot = inp->i_parent;
	143	fileerror(inp->i_parent, inp->i_number, "MISSING '..'");
	144	if (reply("FIX") == 0)
	145	continue;
d72e970b	146	(void)makeentry(inp->i_number, inp->i_parent, "..");
987e77a3 KM	147	lncntp[inp->i_parent]--;
	148	continue;
	149	}
	150	fileerror(inp->i_parent, inp->i_number,
3735ff63	151	"BAD INODE NUMBER FOR '..'");
987e77a3 KM	152	if (reply("FIX") == 0)
	153	continue;
	154	lncntp[inp->i_dotdot]++;
	155	lncntp[inp->i_parent]--;
	156	inp->i_dotdot = inp->i_parent;
	157	(void)changeino(inp->i_number, "..", inp->i_parent);
	158	}
	159	/*
	160	* Mark all the directories that can be found from the root.
	161	*/
	162	propagate();
ba8f3d8f KM	163	}
	164
	165	pass2check(idesc)
	166	struct inodesc *idesc;
	167	{
569ec282	168	register struct direct *dirp = idesc->id_dirp;
987e77a3	169	register struct inoinfo *inp;
ba8f3d8f	170	int n, entrysize, ret = 0;
569ec282	171	struct dinode *dp;
f13c3b57	172	char *errmsg;
569ec282	173	struct direct proto;
987e77a3 KM	174	char namebuf[MAXPATHLEN + 1];
987e77a3 KM	175	char pathbuf[MAXPATHLEN + 1];
ba8f3d8f	176
3735ff63 KM	177	/*
	178	* If converting, set directory entry type.
	179	*/
	180	if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) {
	181	dirp->d_type = typemap[dirp->d_ino];
	182	ret \|= ALTERED;
	183	}
ba8f3d8f KM	184	/*
	185	* check for "."
	186	*/
	187	if (idesc->id_entryno != 0)
	188	goto chk1;
	189	if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) {
	190	if (dirp->d_ino != idesc->id_number) {
569ec282	191	direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
ba8f3d8f KM	192	dirp->d_ino = idesc->id_number;
	193	if (reply("FIX") == 1)
	194	ret \|= ALTERED;
	195	}
3735ff63 KM	196	if (newinofmt && dirp->d_type != DT_DIR) {
	197	direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
	198	dirp->d_type = DT_DIR;
	199	if (reply("FIX") == 1)
	200	ret \|= ALTERED;
	201	}
ba8f3d8f KM	202	goto chk1;
ba8f3d8f KM	203	}
569ec282	204	direrror(idesc->id_number, "MISSING '.'");
ba8f3d8f	205	proto.d_ino = idesc->id_number;
3735ff63 KM	206	if (newinofmt)
3735ff63 KM	207	proto.d_type = DT_DIR;
5ea8a7e3 KM	208	else
5ea8a7e3 KM	209	proto.d_type = 0;
ba8f3d8f KM	210	proto.d_namlen = 1;
ba8f3d8f KM	211	(void)strcpy(proto.d_name, ".");
3735ff63	212	entrysize = DIRSIZ(0, &proto);
ba8f3d8f KM	213	if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) {
	214	pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
	215	dirp->d_name);
	216	} else if (dirp->d_reclen < entrysize) {
	217	pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
	218	} else if (dirp->d_reclen < 2 * entrysize) {
	219	proto.d_reclen = dirp->d_reclen;
d72e970b	220	bcopy((char )&proto, (char )dirp, (size_t)entrysize);
ba8f3d8f KM	221	if (reply("FIX") == 1)
	222	ret \|= ALTERED;
	223	} else {
	224	n = dirp->d_reclen - entrysize;
	225	proto.d_reclen = entrysize;
d72e970b	226	bcopy((char )&proto, (char )dirp, (size_t)entrysize);
ba8f3d8f KM	227	idesc->id_entryno++;
ba8f3d8f KM	228	lncntp[dirp->d_ino]--;
569ec282	229	dirp = (struct direct )((char )(dirp) + entrysize);
d72e970b	230	bzero((char *)dirp, (size_t)n);
ba8f3d8f KM	231	dirp->d_reclen = n;
	232	if (reply("FIX") == 1)
	233	ret \|= ALTERED;
	234	}
	235	chk1:
	236	if (idesc->id_entryno > 1)
	237	goto chk2;
987e77a3 KM	238	inp = getinoinfo(idesc->id_number);
987e77a3 KM	239	proto.d_ino = inp->i_parent;
3735ff63 KM	240	if (newinofmt)
3735ff63 KM	241	proto.d_type = DT_DIR;
5ea8a7e3 KM	242	else
5ea8a7e3 KM	243	proto.d_type = 0;
ba8f3d8f KM	244	proto.d_namlen = 2;
ba8f3d8f KM	245	(void)strcpy(proto.d_name, "..");
3735ff63	246	entrysize = DIRSIZ(0, &proto);
ba8f3d8f	247	if (idesc->id_entryno == 0) {
3735ff63	248	n = DIRSIZ(0, dirp);
ba8f3d8f KM	249	if (dirp->d_reclen < n + entrysize)
	250	goto chk2;
	251	proto.d_reclen = dirp->d_reclen - n;
	252	dirp->d_reclen = n;
	253	idesc->id_entryno++;
	254	lncntp[dirp->d_ino]--;
569ec282	255	dirp = (struct direct )((char )(dirp) + n);
d72e970b	256	bzero((char *)dirp, (size_t)proto.d_reclen);
987e77a3	257	dirp->d_reclen = proto.d_reclen;
ba8f3d8f KM	258	}
ba8f3d8f KM	259	if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) {
987e77a3	260	inp->i_dotdot = dirp->d_ino;
3735ff63 KM	261	if (newinofmt && dirp->d_type != DT_DIR) {
	262	direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
	263	dirp->d_type = DT_DIR;
	264	if (reply("FIX") == 1)
	265	ret \|= ALTERED;
	266	}
ba8f3d8f KM	267	goto chk2;
ba8f3d8f KM	268	}
ba8f3d8f	269	if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) {
987e77a3	270	fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
ba8f3d8f KM	271	pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n",
ba8f3d8f KM	272	dirp->d_name);
987e77a3	273	inp->i_dotdot = (ino_t)-1;
ba8f3d8f	274	} else if (dirp->d_reclen < entrysize) {
987e77a3	275	fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
ba8f3d8f	276	pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n");
987e77a3 KM	277	inp->i_dotdot = (ino_t)-1;
	278	} else if (inp->i_parent != 0) {
	279	/*
	280	* We know the parent, so fix now.
	281	*/
	282	inp->i_dotdot = inp->i_parent;
	283	fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
ba8f3d8f	284	proto.d_reclen = dirp->d_reclen;
d72e970b	285	bcopy((char )&proto, (char )dirp, (size_t)entrysize);
ba8f3d8f KM	286	if (reply("FIX") == 1)
	287	ret \|= ALTERED;
	288	}
987e77a3 KM	289	idesc->id_entryno++;
	290	if (dirp->d_ino != 0)
	291	lncntp[dirp->d_ino]--;
	292	return (ret\|KEEPON);
ba8f3d8f KM	293	chk2:
	294	if (dirp->d_ino == 0)
	295	return (ret\|KEEPON);
	296	if (dirp->d_namlen <= 2 &&
	297	dirp->d_name[0] == '.' &&
	298	idesc->id_entryno >= 2) {
	299	if (dirp->d_namlen == 1) {
569ec282	300	direrror(idesc->id_number, "EXTRA '.' ENTRY");
ba8f3d8f KM	301	dirp->d_ino = 0;
	302	if (reply("FIX") == 1)
	303	ret \|= ALTERED;
	304	return (KEEPON \| ret);
	305	}
	306	if (dirp->d_name[1] == '.') {
569ec282	307	direrror(idesc->id_number, "EXTRA '..' ENTRY");
ba8f3d8f KM	308	dirp->d_ino = 0;
	309	if (reply("FIX") == 1)
	310	ret \|= ALTERED;
	311	return (KEEPON \| ret);
	312	}
	313	}
ba8f3d8f KM	314	idesc->id_entryno++;
ba8f3d8f KM	315	n = 0;
fca9f60c	316	if (dirp->d_ino > maxino) {
987e77a3	317	fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE");
ba8f3d8f KM	318	n = reply("REMOVE");
	319	} else {
	320	again:
	321	switch (statemap[dirp->d_ino]) {
	322	case USTATE:
8dc4ce37 KM	323	if (idesc->id_entryno <= 2)
8dc4ce37 KM	324	break;
987e77a3	325	fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED");
ba8f3d8f KM	326	n = reply("REMOVE");
	327	break;
	328
993a756c KM	329	case DCLEAR:
993a756c KM	330	case FCLEAR:
8dc4ce37 KM	331	if (idesc->id_entryno <= 2)
8dc4ce37 KM	332	break;
e965843f	333	if (statemap[dirp->d_ino] == FCLEAR)
f13c3b57	334	errmsg = "DUP/BAD";
e965843f KM	335	else if (!preen)
	336	errmsg = "ZERO LENGTH DIRECTORY";
	337	else {
	338	n = 1;
	339	break;
	340	}
f13c3b57	341	fileerror(idesc->id_number, dirp->d_ino, errmsg);
ba8f3d8f KM	342	if ((n = reply("REMOVE")) == 1)
ba8f3d8f KM	343	break;
39c18287	344	dp = ginode(dirp->d_ino);
569ec282 KM	345	statemap[dirp->d_ino] =
569ec282 KM	346	(dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE;
77d16a71	347	lncntp[dirp->d_ino] = dp->di_nlink;
ba8f3d8f KM	348	goto again;
ba8f3d8f KM	349
987e77a3 KM	350	case DSTATE:
	351	if (statemap[idesc->id_number] == DFOUND)
	352	statemap[dirp->d_ino] = DFOUND;
	353	/* fall through */
	354
993a756c	355	case DFOUND:
987e77a3	356	inp = getinoinfo(dirp->d_ino);
987e77a3 KM	357	if (inp->i_parent != 0 && idesc->id_entryno > 2) {
	358	getpathname(pathbuf, idesc->id_number,
	359	idesc->id_number);
3ad2f081	360	getpathname(namebuf, dirp->d_ino, dirp->d_ino);
987e77a3	361	pwarn("%s %s %s\n", pathbuf,
3ad2f081 KM	362	"IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
	363	namebuf);
	364	if (preen)
	365	printf(" (IGNORED)\n");
	366	else if ((n = reply("REMOVE")) == 1)
	367	break;
	368	}
987e77a3 KM	369	if (idesc->id_entryno > 2)
987e77a3 KM	370	inp->i_parent = idesc->id_number;
993a756c KM	371	/* fall through */
993a756c KM	372
ba8f3d8f	373	case FSTATE:
3735ff63 KM	374	if (newinofmt && dirp->d_type != typemap[dirp->d_ino]) {
	375	fileerror(idesc->id_number, dirp->d_ino,
	376	"BAD TYPE VALUE");
	377	dirp->d_type = typemap[dirp->d_ino];
	378	if (reply("FIX") == 1)
	379	ret \|= ALTERED;
	380	}
ba8f3d8f KM	381	lncntp[dirp->d_ino]--;
	382	break;
	383
ea4448dc KM	384	default:
	385	errexit("BAD STATE %d FOR INODE I=%d",
	386	statemap[dirp->d_ino], dirp->d_ino);
ba8f3d8f KM	387	}
ba8f3d8f KM	388	}
ba8f3d8f KM	389	if (n == 0)
	390	return (ret\|KEEPON);
	391	dirp->d_ino = 0;
	392	return (ret\|KEEPON\|ALTERED);
	393	}
987e77a3 KM	394
	395	/*
	396	* Routine to sort disk blocks.
	397	*/
	398	blksort(inpp1, inpp2)
	399	struct inoinfo inpp1, inpp2;
	400	{
	401
	402	return ((inpp1)->i_blks[0] - (inpp2)->i_blks[0]);
	403	}