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

/*
 * Copyright (c) 1980, 1989 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1989 Regents of the University of California.\n\
 All rights reserved.\n";
#endif not lint

#ifndef lint
static char sccsid[] = "@(#)main.c	5.14 (Berkeley) %G%";
#endif not lint

#include <sys/param.h>
#include <sys/time.h>
#include <sys/vnode.h>
#include <ufs/inode.h>
#include <ufs/fs.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fstab.h>
#include <strings.h>
#include <ctype.h>
#include "fsck.h"

char	*rawname(), *unrawname(), *blockcheck(), *malloc();
void	catch(), catchquit(), voidquit();
int	returntosingle;

struct part {
	char	*name;			/* device name */
	char	*fsname;		/* mounted filesystem name */
	struct	part *next;		/* forward link of partitions on disk */
} *badlist, **badnext = &badlist;

struct disk {
	char	*name;			/* disk base name */
	struct	disk *next;		/* forward link for list of disks */
	struct	part *part;		/* head of list of partitions on disk */
	int	pid;			/* If != 0, pid of proc working on */
} *disks;

int	nrun, ndisks, maxrun;

main(argc, argv)
	int	argc;
	char	*argv[];
{
	struct fstab *fsp;
	int pid, passno, sumstatus;
	char *name;
	register struct disk *dk, *nextdisk;
	register struct part *pt;

	sync();
	while (--argc > 0 && **++argv == '-') {
		switch (*++*argv) {

		case 'p':
			preen++;
			break;

		case 'b':
			if (argv[0][1] != '\0') {
				bflag = atoi(argv[0]+1);
			} else {
				bflag = atoi(*++argv);
				argc--;
			}
			printf("Alternate super block location: %d\n", bflag);
			break;

		case 'c':
			cvtflag++;
			break;

		case 'd':
			debug++;
			break;

		case 'l':
			if (!isdigit(argv[1][0]))
				errexit("-l flag requires a number\n");
			maxrun = atoi(*++argv);
			argc--;
			break;

		case 'm':
			if (!isdigit(argv[1][0]))
				errexit("-m flag requires a mode\n");
			sscanf(*++argv, "%o", &lfmode);
			if (lfmode &~ 07777)
				errexit("bad mode to -m: %o\n", lfmode);
			argc--;
			printf("** lost+found creation mode %o\n", lfmode);
			break;

		case 'n':	/* default no answer flag */
		case 'N':
			nflag++;
			yflag = 0;
			break;

		case 'y':	/* default yes answer flag */
		case 'Y':
			yflag++;
			nflag = 0;
			break;

		default:
			errexit("%c option?\n", **argv);
		}
	}
	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
		(void)signal(SIGINT, catch);
	if (preen)
		(void)signal(SIGQUIT, catchquit);
	if (argc) {
		while (argc-- > 0) {
			hotroot = 0;
			checkfilesys(*argv++);
		}
		exit(0);
	}
	sumstatus = 0;
	for (passno = 1; passno <= 2; passno++) {
		if (setfsent() == 0)
			errexit("Can't open checklist file: %s\n", _PATH_FSTAB);
		while ((fsp = getfsent()) != 0) {
			if (strcmp(fsp->fs_type, FSTAB_RW) &&
			    strcmp(fsp->fs_type, FSTAB_RO) &&
			    strcmp(fsp->fs_type, FSTAB_RQ))
				continue;
			if (preen == 0 ||
			    passno == 1 && fsp->fs_passno == 1) {
				name = blockcheck(fsp->fs_spec);
				if (name != NULL)
					checkfilesys(name);
				else if (preen)
					exit(8);
			} else if (passno == 2 && fsp->fs_passno > 1) {
				name = blockcheck(fsp->fs_spec);
				if (name == NULL) {
					pwarn("BAD DISK NAME %s\n",
						fsp->fs_spec);
					sumstatus |= 8;
					continue;
				}
				addpart(name, fsp->fs_file);
			}
		}
	}
	if (preen) {
		union wait status;

		if (maxrun == 0)
			maxrun = ndisks;
		if (maxrun > ndisks)
			maxrun = ndisks;
		nextdisk = disks;
		for (passno = 0; passno < maxrun; ++passno) {
			startdisk(nextdisk);
			nextdisk = nextdisk->next;
		}
		while ((pid = wait(&status)) != -1) {
			for (dk = disks; dk; dk = dk->next)
				if (dk->pid == pid)
					break;
			if (dk == 0) {
				printf("Unknown pid %d\n", pid);
				continue;
			}
			if (status.w_termsig) {
				printf("%s (%s): EXITED WITH SIGNAL %d\n",
					dk->part->name, dk->part->fsname,
					status.w_termsig);
				status.w_retcode = 8;
			}
			if (status.w_retcode != 0) {
				sumstatus |= status.w_retcode;
				*badnext = dk->part;
				badnext = &dk->part->next;
				dk->part = dk->part->next;
				*badnext = NULL;
			} else
				dk->part = dk->part->next;
			dk->pid = 0;
			nrun--;
			if (dk->part == NULL)
				ndisks--;

			if (nextdisk == NULL) {
				if (dk->part)
					startdisk(dk);
			} else if (nrun < maxrun && nrun < ndisks) {
				for ( ;; ) {
					if ((nextdisk = nextdisk->next) == NULL)
						nextdisk = disks;
					if (nextdisk->part != NULL &&
					    nextdisk->pid == 0)
						break;
				}
				startdisk(nextdisk);
			}
		}
	}
	if (sumstatus) {
		if (badlist == 0)
			exit(8);
		printf("THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
			badlist->next ? "S" : "", "UNEXPECTED INCONSISTENCY:");
		for (pt = badlist; pt; pt = pt->next)
			printf("%s (%s)%s", pt->name, pt->fsname,
			    pt->next ? ", " : "\n");
		exit(8);
	}
	(void)endfsent();
	if (returntosingle)
		exit(2);
	exit(0);
}

struct disk *
finddisk(name)
	char *name;
{
	register struct disk *dk, **dkp;
	register char *p;
	int len;

	for (p = name + strlen(name) - 1; p >= name; --p)
		if (isdigit(*p)) {
			len = p - name + 1;
			break;
		}
	if (p < name)
		len = strlen(name);

	for (dk = disks, dkp = &disks; dk; dkp = &dk->next, dk = dk->next) {
		if (strncmp(dk->name, name, len) == 0 &&
		    dk->name[len] == 0)
			return (dk);
	}
	if ((*dkp = (struct disk *)malloc(sizeof(struct disk))) == NULL)
		errexit("out of memory");
	dk = *dkp;
	if ((dk->name = malloc(len + 1)) == NULL)
		errexit("out of memory");
	strncpy(dk->name, name, len);
	dk->name[len] = '\0';
	dk->part = NULL;
	dk->next = NULL;
	dk->pid = 0;
	ndisks++;
	return (dk);
}

addpart(name, fsname)
	char *name, *fsname;
{
	struct disk *dk = finddisk(name);
	register struct part *pt, **ppt = &dk->part;

	for (pt = dk->part; pt; ppt = &pt->next, pt = pt->next)
		if (strcmp(pt->name, name) == 0) {
			printf("%s in fstab more than once!\n", name);
			return;
		}
	if ((*ppt = (struct part *)malloc(sizeof(struct part))) == NULL)
		errexit("out of memory");
	pt = *ppt;
	if ((pt->name = malloc(strlen(name) + 1)) == NULL)
		errexit("out of memory");
	strcpy(pt->name, name);
	if ((pt->fsname = malloc(strlen(fsname) + 1)) == NULL)
		errexit("out of memory");
	strcpy(pt->fsname, fsname);
	pt->next = NULL;
}

startdisk(dk)
	register struct disk *dk;
{

	nrun++;
	dk->pid = fork();
	if (dk->pid < 0) {
		perror("fork");
		exit(8);
	}
	if (dk->pid == 0) {
		(void)signal(SIGQUIT, voidquit);
		checkfilesys(dk->part->name);
		exit(0);
	}
}

checkfilesys(filesys)
	char *filesys;
{
	daddr_t n_ffree, n_bfree;
	struct dups *dp;
	struct zlncnt *zlnp;

	devname = filesys;
	if (debug && preen)
		pwarn("starting\n");
	if (setup(filesys) == 0) {
		if (preen)
			pfatal("CAN'T CHECK FILE SYSTEM.");
		return;
	}
	/*
	 * 1: scan inodes tallying blocks used
	 */
	if (preen == 0) {
		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
		if (hotroot)
			printf("** Root file system\n");
		printf("** Phase 1 - Check Blocks and Sizes\n");
	}
	pass1();

	/*
	 * 1b: locate first references to duplicates, if any
	 */
	if (duplist) {
		if (preen)
			pfatal("INTERNAL ERROR: dups with -p");
		printf("** Phase 1b - Rescan For More DUPS\n");
		pass1b();
	}

	/*
	 * 2: traverse directories from root to mark all connected directories
	 */
	if (preen == 0)
		printf("** Phase 2 - Check Pathnames\n");
	pass2();

	/*
	 * 3: scan inodes looking for disconnected directories
	 */
	if (preen == 0)
		printf("** Phase 3 - Check Connectivity\n");
	pass3();

	/*
	 * 4: scan inodes looking for disconnected files; check reference counts
	 */
	if (preen == 0)
		printf("** Phase 4 - Check Reference Counts\n");
	pass4();

	/*
	 * 5: check and repair resource counts in cylinder groups
	 */
	if (preen == 0)
		printf("** Phase 5 - Check Cyl groups\n");
	pass5();

	/*
	 * print out summary statistics
	 */
	n_ffree = sblock.fs_cstotal.cs_nffree;
	n_bfree = sblock.fs_cstotal.cs_nbfree;
	pwarn("%d files, %d used, %d free ",
	    n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
	printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
	    n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
	if (debug && (n_files -= imax - ROOTINO - sblock.fs_cstotal.cs_nifree))
		printf("%d files missing\n", n_files);
	if (debug) {
		n_blks += sblock.fs_ncg *
			(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
		n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
		n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
		if (n_blks -= fmax - (n_ffree + sblock.fs_frag * n_bfree))
			printf("%d blocks missing\n", n_blks);
		if (duplist != NULL) {
			printf("The following duplicate blocks remain:");
			for (dp = duplist; dp; dp = dp->next)
				printf(" %d,", dp->dup);
			printf("\n");
		}
		if (zlnhead != NULL) {
			printf("The following zero link count inodes remain:");
			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
				printf(" %d,", zlnp->zlncnt);
			printf("\n");
		}
	}
	zlnhead = (struct zlncnt *)0;
	duplist = (struct dups *)0;
	if (dfile.mod) {
		(void)time(&sblock.fs_time);
		sbdirty();
	}
	ckfini();
	free(blockmap);
	free(statemap);
	free((char *)lncntp);
	if (!dfile.mod)
		return;
	if (!preen) {
		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
		if (hotroot)
			printf("\n***** REBOOT UNIX *****\n");
	}
	if (hotroot) {
		sync();
		exit(4);
	}
}

char *
blockcheck(name)
	char *name;
{
	struct stat stslash, stblock, stchar;
	char *raw;
	int looped = 0;

	hotroot = 0;
	if (stat("/", &stslash) < 0){
		perror("/");
		printf("Can't stat root\n");
		return (0);
	}
retry:
	if (stat(name, &stblock) < 0){
		perror(name);
		printf("Can't stat %s\n", name);
		return (0);
	}
	if ((stblock.st_mode & S_IFMT) == S_IFBLK) {
		if (stslash.st_dev == stblock.st_rdev) {
			hotroot++;
			return (name);
		}
		raw = rawname(name);
		if (stat(raw, &stchar) < 0){
			perror(raw);
			printf("Can't stat %s\n", raw);
			return (name);
		}
		if ((stchar.st_mode & S_IFMT) == S_IFCHR)
			return (raw);
		else {
			printf("%s is not a character device\n", raw);
			return (name);
		}
	} else if ((stblock.st_mode & S_IFMT) == S_IFCHR) {
		if (looped) {
			printf("Can't make sense out of name %s\n", name);
			return (0);
		}
		name = unrawname(name);
		looped++;
		goto retry;
	}
	printf("Can't make sense out of name %s\n", name);
	return (0);
}

char *
unrawname(cp)
	char *cp;
{
	char *dp = rindex(cp, '/');
	struct stat stb;

	if (dp == 0)
		return (cp);
	if (stat(cp, &stb) < 0)
		return (cp);
	if ((stb.st_mode&S_IFMT) != S_IFCHR)
		return (cp);
	if (*(dp+1) != 'r')
		return (cp);
	(void)strcpy(dp+1, dp+2);
	return (cp);
}

char *
rawname(cp)
	char *cp;
{
	static char rawbuf[32];
	char *dp = rindex(cp, '/');

	if (dp == 0)
		return (0);
	*dp = 0;
	(void)strcpy(rawbuf, cp);
	*dp = '/';
	(void)strcat(rawbuf, "/r");
	(void)strcat(rawbuf, dp+1);
	return (rawbuf);
}
Commit	Line	Data
76797561	1	/*
5eeaeb24	2	* Copyright (c) 1980, 1989 Regents of the University of California.
76797561 DF	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
	7	#ifndef lint
	8	char copyright[] =
5eeaeb24	9	"@(#) Copyright (c) 1980, 1989 Regents of the University of California.\n\
76797561 DF	10	All rights reserved.\n";
	11	#endif not lint
	12
fa95fc59	13	#ifndef lint
392fe950	14	static char sccsid[] = "@(#)main.c 5.14 (Berkeley) %G%";
76797561	15	#endif not lint
07670f7d	16
4d308541	17	#include <sys/param.h>
4d7f4685 KM	18	#include <sys/time.h>
	19	#include <sys/vnode.h>
	20	#include <ufs/inode.h>
	21	#include <ufs/fs.h>
7718c0e6 KM	22	#include <sys/stat.h>
	23	#include <sys/wait.h>
	24	#include <fstab.h>
	25	#include <strings.h>
c689da7b	26	#include <ctype.h>
f7635e39	27	#include "fsck.h"
6e884967	28
5eeaeb24	29	char rawname(), unrawname(), blockcheck(), malloc();
392fe950	30	void catch(), catchquit(), voidquit();
3cfe4689	31	int returntosingle;
7718c0e6	32
5eeaeb24 MK	33	struct part {
	34	char name; / device name */
	35	char fsname; / mounted filesystem name */
	36	struct part next; / forward link of partitions on disk */
	37	} badlist, *badnext = &badlist;
	38
	39	struct disk {
	40	char name; / disk base name */
	41	struct disk next; / forward link for list of disks */
	42	struct part part; / head of list of partitions on disk */
	43	int pid; /* If != 0, pid of proc working on */
	44	} *disks;
	45
	46	int nrun, ndisks, maxrun;
	47
7718c0e6 KM	48	main(argc, argv)
	49	int argc;
	50	char *argv[];
	51	{
	52	struct fstab *fsp;
5eeaeb24	53	int pid, passno, sumstatus;
7718c0e6	54	char *name;
5eeaeb24 MK	55	register struct disk dk, nextdisk;
5eeaeb24 MK	56	register struct part *pt;
7718c0e6 KM	57
	58	sync();
	59	while (--argc > 0 && **++argv == '-') {
	60	switch (++argv) {
	61
	62	case 'p':
	63	preen++;
	64	break;
	65
	66	case 'b':
	67	if (argv[0][1] != '\0') {
	68	bflag = atoi(argv[0]+1);
	69	} else {
	70	bflag = atoi(*++argv);
	71	argc--;
	72	}
	73	printf("Alternate super block location: %d\n", bflag);
	74	break;
	75
d3e80ec3 KM	76	case 'c':
	77	cvtflag++;
	78	break;
	79
7718c0e6 KM	80	case 'd':
	81	debug++;
	82	break;
	83
5eeaeb24 MK	84	case 'l':
	85	if (!isdigit(argv[1][0]))
	86	errexit("-l flag requires a number\n");
	87	maxrun = atoi(*++argv);
	88	argc--;
	89	break;
	90
c689da7b KM	91	case 'm':
	92	if (!isdigit(argv[1][0]))
	93	errexit("-m flag requires a mode\n");
	94	sscanf(*++argv, "%o", &lfmode);
	95	if (lfmode &~ 07777)
	96	errexit("bad mode to -m: %o\n", lfmode);
	97	argc--;
	98	printf("** lost+found creation mode %o\n", lfmode);
	99	break;
	100
7718c0e6 KM	101	case 'n': /* default no answer flag */
	102	case 'N':
	103	nflag++;
	104	yflag = 0;
	105	break;
	106
	107	case 'y': /* default yes answer flag */
	108	case 'Y':
	109	yflag++;
	110	nflag = 0;
	111	break;
	112
	113	default:
	114	errexit("%c option?\n", **argv);
	115	}
	116	}
	117	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
	118	(void)signal(SIGINT, catch);
3cfe4689 MK	119	if (preen)
3cfe4689 MK	120	(void)signal(SIGQUIT, catchquit);
7718c0e6 KM	121	if (argc) {
	122	while (argc-- > 0) {
	123	hotroot = 0;
cfbff64d	124	checkfilesys(*argv++);
7718c0e6 KM	125	}
	126	exit(0);
	127	}
	128	sumstatus = 0;
5eeaeb24	129	for (passno = 1; passno <= 2; passno++) {
7718c0e6	130	if (setfsent() == 0)
4d7f4685	131	errexit("Can't open checklist file: %s\n", _PATH_FSTAB);
7718c0e6 KM	132	while ((fsp = getfsent()) != 0) {
	133	if (strcmp(fsp->fs_type, FSTAB_RW) &&
	134	strcmp(fsp->fs_type, FSTAB_RO) &&
	135	strcmp(fsp->fs_type, FSTAB_RQ))
	136	continue;
	137	if (preen == 0 \|\|
5eeaeb24	138	passno == 1 && fsp->fs_passno == 1) {
7718c0e6 KM	139	name = blockcheck(fsp->fs_spec);
	140	if (name != NULL)
	141	checkfilesys(name);
	142	else if (preen)
	143	exit(8);
5eeaeb24	144	} else if (passno == 2 && fsp->fs_passno > 1) {
844eeb65 KM	145	name = blockcheck(fsp->fs_spec);
	146	if (name == NULL) {
	147	pwarn("BAD DISK NAME %s\n",
	148	fsp->fs_spec);
	149	sumstatus \|= 8;
	150	continue;
	151	}
5eeaeb24	152	addpart(name, fsp->fs_file);
7718c0e6 KM	153	}
7718c0e6 KM	154	}
5eeaeb24 MK	155	}
	156	if (preen) {
	157	union wait status;
	158
	159	if (maxrun == 0)
	160	maxrun = ndisks;
	161	if (maxrun > ndisks)
	162	maxrun = ndisks;
	163	nextdisk = disks;
	164	for (passno = 0; passno < maxrun; ++passno) {
	165	startdisk(nextdisk);
	166	nextdisk = nextdisk->next;
	167	}
	168	while ((pid = wait(&status)) != -1) {
5eeaeb24 MK	169	for (dk = disks; dk; dk = dk->next)
	170	if (dk->pid == pid)
	171	break;
	172	if (dk == 0) {
	173	printf("Unknown pid %d\n", pid);
	174	continue;
	175	}
	176	if (status.w_termsig) {
	177	printf("%s (%s): EXITED WITH SIGNAL %d\n",
	178	dk->part->name, dk->part->fsname,
	179	status.w_termsig);
	180	status.w_retcode = 8;
	181	}
	182	if (status.w_retcode != 0) {
08f28b2a	183	sumstatus \|= status.w_retcode;
5eeaeb24 MK	184	*badnext = dk->part;
	185	badnext = &dk->part->next;
	186	dk->part = dk->part->next;
	187	*badnext = NULL;
	188	} else
	189	dk->part = dk->part->next;
	190	dk->pid = 0;
	191	nrun--;
	192	if (dk->part == NULL)
	193	ndisks--;
	194
	195	if (nextdisk == NULL) {
	196	if (dk->part)
	197	startdisk(dk);
	198	} else if (nrun < maxrun && nrun < ndisks) {
	199	for ( ;; ) {
	200	if ((nextdisk = nextdisk->next) == NULL)
	201	nextdisk = disks;
	202	if (nextdisk->part != NULL &&
	203	nextdisk->pid == 0)
844eeb65	204	break;
844eeb65	205	}
5eeaeb24	206	startdisk(nextdisk);
844eeb65	207	}
7718c0e6	208	}
5eeaeb24	209	}
844eeb65 KM	210	if (sumstatus) {
	211	if (badlist == 0)
	212	exit(8);
	213	printf("THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
	214	badlist->next ? "S" : "", "UNEXPECTED INCONSISTENCY:");
5eeaeb24 MK	215	for (pt = badlist; pt; pt = pt->next)
	216	printf("%s (%s)%s", pt->name, pt->fsname,
	217	pt->next ? ", " : "\n");
7718c0e6	218	exit(8);
844eeb65	219	}
7718c0e6	220	(void)endfsent();
3cfe4689 MK	221	if (returntosingle)
3cfe4689 MK	222	exit(2);
7718c0e6 KM	223	exit(0);
	224	}
	225
5eeaeb24 MK	226	struct disk *
	227	finddisk(name)
	228	char *name;
	229	{
	230	register struct disk dk, *dkp;
	231	register char *p;
	232	int len;
	233
	234	for (p = name + strlen(name) - 1; p >= name; --p)
	235	if (isdigit(*p)) {
	236	len = p - name + 1;
	237	break;
	238	}
	239	if (p < name)
	240	len = strlen(name);
	241
	242	for (dk = disks, dkp = &disks; dk; dkp = &dk->next, dk = dk->next) {
	243	if (strncmp(dk->name, name, len) == 0 &&
	244	dk->name[len] == 0)
	245	return (dk);
	246	}
	247	if ((dkp = (struct disk )malloc(sizeof(struct disk))) == NULL)
	248	errexit("out of memory");
	249	dk = *dkp;
	250	if ((dk->name = malloc(len + 1)) == NULL)
	251	errexit("out of memory");
	252	strncpy(dk->name, name, len);
	253	dk->name[len] = '\0';
	254	dk->part = NULL;
	255	dk->next = NULL;
	256	dk->pid = 0;
	257	ndisks++;
	258	return (dk);
	259	}
	260
	261	addpart(name, fsname)
	262	char name, fsname;
	263	{
	264	struct disk *dk = finddisk(name);
	265	register struct part pt, *ppt = &dk->part;
	266
	267	for (pt = dk->part; pt; ppt = &pt->next, pt = pt->next)
	268	if (strcmp(pt->name, name) == 0) {
	269	printf("%s in fstab more than once!\n", name);
	270	return;
	271	}
	272	if ((ppt = (struct part )malloc(sizeof(struct part))) == NULL)
	273	errexit("out of memory");
	274	pt = *ppt;
	275	if ((pt->name = malloc(strlen(name) + 1)) == NULL)
	276	errexit("out of memory");
	277	strcpy(pt->name, name);
	278	if ((pt->fsname = malloc(strlen(fsname) + 1)) == NULL)
	279	errexit("out of memory");
	280	strcpy(pt->fsname, fsname);
	281	pt->next = NULL;
	282	}
	283
	284	startdisk(dk)
	285	register struct disk *dk;
	286	{
	287
	288	nrun++;
	289	dk->pid = fork();
290	if (dk->pid < 0) {
291	perror("fork");
292	exit(8);
293	}
294	if (dk->pid == 0) {
295	(void)signal(SIGQUIT, voidquit);
296	checkfilesys(dk->part->name);
297	exit(0);
298	}
299	}
300
d2c95d76 BJ	301	checkfilesys(filesys)
d2c95d76 BJ	302	char *filesys;
6e884967	303	{
993a756c	304	daddr_t n_ffree, n_bfree;
d4233021	305	struct dups *dp;
1a02fd3a	306	struct zlncnt *zlnp;
6e884967	307
d2c95d76	308	devname = filesys;
5eeaeb24 MK	309	if (debug && preen)
5eeaeb24 MK	310	pwarn("starting\n");
d2c95d76	311	if (setup(filesys) == 0) {
6e884967	312	if (preen)
d2c95d76	313	pfatal("CAN'T CHECK FILE SYSTEM.");
6e884967 KM	314	return;
6e884967 KM	315	}
993a756c KM	316	/*
	317	* 1: scan inodes tallying blocks used
	318	*/
690f77ba KM	319	if (preen == 0) {
690f77ba KM	320	printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
6e884967 KM	321	if (hotroot)
	322	printf("** Root file system\n");
	323	printf("** Phase 1 - Check Blocks and Sizes\n");
	324	}
d2c95d76 BJ	325	pass1();
d2c95d76 BJ	326
993a756c KM	327	/*
	328	* 1b: locate first references to duplicates, if any
	329	*/
62e6c152	330	if (duplist) {
d2c95d76 BJ	331	if (preen)
	332	pfatal("INTERNAL ERROR: dups with -p");
	333	printf("** Phase 1b - Rescan For More DUPS\n");
	334	pass1b();
	335	}
	336
993a756c KM	337	/*
	338	* 2: traverse directories from root to mark all connected directories
	339	*/
d2c95d76 BJ	340	if (preen == 0)
	341	printf("** Phase 2 - Check Pathnames\n");
	342	pass2();
	343
993a756c KM	344	/*
	345	* 3: scan inodes looking for disconnected directories
	346	*/
d2c95d76 BJ	347	if (preen == 0)
	348	printf("** Phase 3 - Check Connectivity\n");
	349	pass3();
	350
993a756c KM	351	/*
	352	* 4: scan inodes looking for disconnected files; check reference counts
	353	*/
d2c95d76 BJ	354	if (preen == 0)
	355	printf("** Phase 4 - Check Reference Counts\n");
	356	pass4();
	357
993a756c KM	358	/*
	359	* 5: check and repair resource counts in cylinder groups
	360	*/
d2c95d76 BJ	361	if (preen == 0)
	362	printf("** Phase 5 - Check Cyl groups\n");
	363	pass5();
	364
993a756c KM	365	/*
	366	* print out summary statistics
	367	*/
	368	n_ffree = sblock.fs_cstotal.cs_nffree;
	369	n_bfree = sblock.fs_cstotal.cs_nbfree;
8755a38b KM	370	pwarn("%d files, %d used, %d free ",
	371	n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
	372	printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
	373	n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
993a756c KM	374	if (debug && (n_files -= imax - ROOTINO - sblock.fs_cstotal.cs_nifree))
	375	printf("%d files missing\n", n_files);
	376	if (debug) {
	377	n_blks += sblock.fs_ncg *
	378	(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
	379	n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
	380	n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
	381	if (n_blks -= fmax - (n_ffree + sblock.fs_frag * n_bfree))
	382	printf("%d blocks missing\n", n_blks);
d4233021 KM	383	if (duplist != NULL) {
	384	printf("The following duplicate blocks remain:");
	385	for (dp = duplist; dp; dp = dp->next)
	386	printf(" %d,", dp->dup);
	387	printf("\n");
	388	}
1a02fd3a KM	389	if (zlnhead != NULL) {
	390	printf("The following zero link count inodes remain:");
	391	for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
	392	printf(" %d,", zlnp->zlncnt);
	393	printf("\n");
	394	}
d2c95d76	395	}
1a02fd3a KM	396	zlnhead = (struct zlncnt *)0;
1a02fd3a KM	397	duplist = (struct dups *)0;
d2c95d76	398	if (dfile.mod) {
1a724405	399	(void)time(&sblock.fs_time);
d2c95d76 BJ	400	sbdirty();
	401	}
	402	ckfini();
	403	free(blockmap);
d2c95d76	404	free(statemap);
1a724405	405	free((char *)lncntp);
addfa1aa BJ	406	if (!dfile.mod)
	407	return;
	408	if (!preen) {
	409	printf("\n*** FILE SYSTEM WAS MODIFIED ***\n");
	410	if (hotroot)
	411	printf("\n*** REBOOT UNIX ***\n");
	412	}
	413	if (hotroot) {
	414	sync();
	415	exit(4);
f5971be7	416	}
f5971be7	417	}
7718c0e6 KM	418
	419	char *
	420	blockcheck(name)
	421	char *name;
	422	{
	423	struct stat stslash, stblock, stchar;
	424	char *raw;
	425	int looped = 0;
	426
	427	hotroot = 0;
	428	if (stat("/", &stslash) < 0){
cfbff64d	429	perror("/");
7718c0e6 KM	430	printf("Can't stat root\n");
	431	return (0);
	432	}
	433	retry:
	434	if (stat(name, &stblock) < 0){
cfbff64d	435	perror(name);
7718c0e6 KM	436	printf("Can't stat %s\n", name);
	437	return (0);
	438	}
e8c2f9ee	439	if ((stblock.st_mode & S_IFMT) == S_IFBLK) {
cfbff64d MK	440	if (stslash.st_dev == stblock.st_rdev) {
	441	hotroot++;
	442	return (name);
	443	}
7718c0e6 KM	444	raw = rawname(name);
7718c0e6 KM	445	if (stat(raw, &stchar) < 0){
cfbff64d	446	perror(raw);
7718c0e6	447	printf("Can't stat %s\n", raw);
cfbff64d	448	return (name);
7718c0e6	449	}
cfbff64d	450	if ((stchar.st_mode & S_IFMT) == S_IFCHR)
7718c0e6	451	return (raw);
cfbff64d	452	else {
7718c0e6	453	printf("%s is not a character device\n", raw);
cfbff64d	454	return (name);
7718c0e6	455	}
e8c2f9ee	456	} else if ((stblock.st_mode & S_IFMT) == S_IFCHR) {
7718c0e6 KM	457	if (looped) {
	458	printf("Can't make sense out of name %s\n", name);
	459	return (0);
	460	}
	461	name = unrawname(name);
	462	looped++;
	463	goto retry;
	464	}
	465	printf("Can't make sense out of name %s\n", name);
	466	return (0);
	467	}
	468
	469	char *
	470	unrawname(cp)
	471	char *cp;
	472	{
	473	char *dp = rindex(cp, '/');
	474	struct stat stb;
	475
	476	if (dp == 0)
	477	return (cp);
	478	if (stat(cp, &stb) < 0)
	479	return (cp);
	480	if ((stb.st_mode&S_IFMT) != S_IFCHR)
	481	return (cp);
	482	if (*(dp+1) != 'r')
	483	return (cp);
	484	(void)strcpy(dp+1, dp+2);
	485	return (cp);
	486	}
	487
	488	char *
	489	rawname(cp)
	490	char *cp;
	491	{
	492	static char rawbuf[32];
	493	char *dp = rindex(cp, '/');
	494
	495	if (dp == 0)
	496	return (0);
	497	*dp = 0;
	498	(void)strcpy(rawbuf, cp);
	499	*dp = '/';
	500	(void)strcat(rawbuf, "/r");
	501	(void)strcat(rawbuf, dp+1);
	502	return (rawbuf);
	503	}