[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	5.15 (Berkeley) %G%";
#endif not lint

#include <sys/param.h>
#include <ufs/dinode.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
72e5286b	14	static char sccsid[] = "@(#)main.c 5.15 (Berkeley) %G%";
76797561	15	#endif not lint
07670f7d	16
4d308541	17	#include <sys/param.h>
72e5286b	18	#include <ufs/dinode.h>
4d7f4685	19	#include <ufs/fs.h>
7718c0e6 KM	20	#include <sys/stat.h>
	21	#include <sys/wait.h>
	22	#include <fstab.h>
	23	#include <strings.h>
c689da7b	24	#include <ctype.h>
f7635e39	25	#include "fsck.h"
6e884967	26
5eeaeb24	27	char rawname(), unrawname(), blockcheck(), malloc();
392fe950	28	void catch(), catchquit(), voidquit();
3cfe4689	29	int returntosingle;
7718c0e6	30
5eeaeb24 MK	31	struct part {
	32	char name; / device name */
	33	char fsname; / mounted filesystem name */
	34	struct part next; / forward link of partitions on disk */
	35	} badlist, *badnext = &badlist;
	36
	37	struct disk {
	38	char name; / disk base name */
	39	struct disk next; / forward link for list of disks */
	40	struct part part; / head of list of partitions on disk */
	41	int pid; /* If != 0, pid of proc working on */
	42	} *disks;
	43
	44	int nrun, ndisks, maxrun;
	45
7718c0e6 KM	46	main(argc, argv)
	47	int argc;
	48	char *argv[];
	49	{
	50	struct fstab *fsp;
5eeaeb24	51	int pid, passno, sumstatus;
7718c0e6	52	char *name;
5eeaeb24 MK	53	register struct disk dk, nextdisk;
5eeaeb24 MK	54	register struct part *pt;
7718c0e6 KM	55
	56	sync();
	57	while (--argc > 0 && **++argv == '-') {
	58	switch (++argv) {
	59
	60	case 'p':
	61	preen++;
	62	break;
	63
	64	case 'b':
	65	if (argv[0][1] != '\0') {
	66	bflag = atoi(argv[0]+1);
	67	} else {
	68	bflag = atoi(*++argv);
	69	argc--;
	70	}
	71	printf("Alternate super block location: %d\n", bflag);
	72	break;
	73
d3e80ec3 KM	74	case 'c':
	75	cvtflag++;
	76	break;
	77
7718c0e6 KM	78	case 'd':
	79	debug++;
	80	break;
	81
5eeaeb24 MK	82	case 'l':
	83	if (!isdigit(argv[1][0]))
	84	errexit("-l flag requires a number\n");
	85	maxrun = atoi(*++argv);
	86	argc--;
	87	break;
	88
c689da7b KM	89	case 'm':
	90	if (!isdigit(argv[1][0]))
	91	errexit("-m flag requires a mode\n");
	92	sscanf(*++argv, "%o", &lfmode);
	93	if (lfmode &~ 07777)
	94	errexit("bad mode to -m: %o\n", lfmode);
	95	argc--;
	96	printf("** lost+found creation mode %o\n", lfmode);
	97	break;
	98
7718c0e6 KM	99	case 'n': /* default no answer flag */
	100	case 'N':
	101	nflag++;
	102	yflag = 0;
	103	break;
	104
	105	case 'y': /* default yes answer flag */
	106	case 'Y':
	107	yflag++;
	108	nflag = 0;
	109	break;
	110
	111	default:
	112	errexit("%c option?\n", **argv);
	113	}
	114	}
	115	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
	116	(void)signal(SIGINT, catch);
3cfe4689 MK	117	if (preen)
3cfe4689 MK	118	(void)signal(SIGQUIT, catchquit);
7718c0e6 KM	119	if (argc) {
	120	while (argc-- > 0) {
	121	hotroot = 0;
cfbff64d	122	checkfilesys(*argv++);
7718c0e6 KM	123	}
	124	exit(0);
	125	}
	126	sumstatus = 0;
5eeaeb24	127	for (passno = 1; passno <= 2; passno++) {
7718c0e6	128	if (setfsent() == 0)
4d7f4685	129	errexit("Can't open checklist file: %s\n", _PATH_FSTAB);
7718c0e6 KM	130	while ((fsp = getfsent()) != 0) {
	131	if (strcmp(fsp->fs_type, FSTAB_RW) &&
	132	strcmp(fsp->fs_type, FSTAB_RO) &&
	133	strcmp(fsp->fs_type, FSTAB_RQ))
	134	continue;
	135	if (preen == 0 \|\|
5eeaeb24	136	passno == 1 && fsp->fs_passno == 1) {
7718c0e6 KM	137	name = blockcheck(fsp->fs_spec);
	138	if (name != NULL)
	139	checkfilesys(name);
	140	else if (preen)
	141	exit(8);
5eeaeb24	142	} else if (passno == 2 && fsp->fs_passno > 1) {
844eeb65 KM	143	name = blockcheck(fsp->fs_spec);
	144	if (name == NULL) {
	145	pwarn("BAD DISK NAME %s\n",
	146	fsp->fs_spec);
	147	sumstatus \|= 8;
	148	continue;
	149	}
5eeaeb24	150	addpart(name, fsp->fs_file);
7718c0e6 KM	151	}
7718c0e6 KM	152	}
5eeaeb24 MK	153	}
	154	if (preen) {
	155	union wait status;
	156
	157	if (maxrun == 0)
	158	maxrun = ndisks;
	159	if (maxrun > ndisks)
	160	maxrun = ndisks;
	161	nextdisk = disks;
	162	for (passno = 0; passno < maxrun; ++passno) {
	163	startdisk(nextdisk);
	164	nextdisk = nextdisk->next;
	165	}
	166	while ((pid = wait(&status)) != -1) {
5eeaeb24 MK	167	for (dk = disks; dk; dk = dk->next)
	168	if (dk->pid == pid)
	169	break;
	170	if (dk == 0) {
	171	printf("Unknown pid %d\n", pid);
	172	continue;
	173	}
	174	if (status.w_termsig) {
	175	printf("%s (%s): EXITED WITH SIGNAL %d\n",
	176	dk->part->name, dk->part->fsname,
	177	status.w_termsig);
	178	status.w_retcode = 8;
	179	}
	180	if (status.w_retcode != 0) {
08f28b2a	181	sumstatus \|= status.w_retcode;
5eeaeb24 MK	182	*badnext = dk->part;
	183	badnext = &dk->part->next;
	184	dk->part = dk->part->next;
	185	*badnext = NULL;
	186	} else
	187	dk->part = dk->part->next;
	188	dk->pid = 0;
	189	nrun--;
	190	if (dk->part == NULL)
	191	ndisks--;
	192
	193	if (nextdisk == NULL) {
	194	if (dk->part)
	195	startdisk(dk);
	196	} else if (nrun < maxrun && nrun < ndisks) {
	197	for ( ;; ) {
	198	if ((nextdisk = nextdisk->next) == NULL)
	199	nextdisk = disks;
	200	if (nextdisk->part != NULL &&
	201	nextdisk->pid == 0)
844eeb65	202	break;
844eeb65	203	}
5eeaeb24	204	startdisk(nextdisk);
844eeb65	205	}
7718c0e6	206	}
5eeaeb24	207	}
844eeb65 KM	208	if (sumstatus) {
	209	if (badlist == 0)
	210	exit(8);
	211	printf("THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
	212	badlist->next ? "S" : "", "UNEXPECTED INCONSISTENCY:");
5eeaeb24 MK	213	for (pt = badlist; pt; pt = pt->next)
	214	printf("%s (%s)%s", pt->name, pt->fsname,
	215	pt->next ? ", " : "\n");
7718c0e6	216	exit(8);
844eeb65	217	}
7718c0e6	218	(void)endfsent();
3cfe4689 MK	219	if (returntosingle)
3cfe4689 MK	220	exit(2);
7718c0e6 KM	221	exit(0);
	222	}
	223
5eeaeb24 MK	224	struct disk *
	225	finddisk(name)
	226	char *name;
	227	{
	228	register struct disk dk, *dkp;
	229	register char *p;
	230	int len;
	231
	232	for (p = name + strlen(name) - 1; p >= name; --p)
	233	if (isdigit(*p)) {
	234	len = p - name + 1;
	235	break;
	236	}
	237	if (p < name)
	238	len = strlen(name);
	239
	240	for (dk = disks, dkp = &disks; dk; dkp = &dk->next, dk = dk->next) {
	241	if (strncmp(dk->name, name, len) == 0 &&
	242	dk->name[len] == 0)
	243	return (dk);
	244	}
	245	if ((dkp = (struct disk )malloc(sizeof(struct disk))) == NULL)
	246	errexit("out of memory");
	247	dk = *dkp;
	248	if ((dk->name = malloc(len + 1)) == NULL)
	249	errexit("out of memory");
	250	strncpy(dk->name, name, len);
	251	dk->name[len] = '\0';
	252	dk->part = NULL;
	253	dk->next = NULL;
	254	dk->pid = 0;
	255	ndisks++;
	256	return (dk);
	257	}
	258
	259	addpart(name, fsname)
	260	char name, fsname;
	261	{
	262	struct disk *dk = finddisk(name);
	263	register struct part pt, *ppt = &dk->part;
	264
	265	for (pt = dk->part; pt; ppt = &pt->next, pt = pt->next)
	266	if (strcmp(pt->name, name) == 0) {
	267	printf("%s in fstab more than once!\n", name);
	268	return;
	269	}
	270	if ((ppt = (struct part )malloc(sizeof(struct part))) == NULL)
	271	errexit("out of memory");
	272	pt = *ppt;
	273	if ((pt->name = malloc(strlen(name) + 1)) == NULL)
	274	errexit("out of memory");
	275	strcpy(pt->name, name);
	276	if ((pt->fsname = malloc(strlen(fsname) + 1)) == NULL)
	277	errexit("out of memory");
	278	strcpy(pt->fsname, fsname);
	279	pt->next = NULL;
	280	}
	281
	282	startdisk(dk)
	283	register struct disk *dk;
	284	{
	285
	286	nrun++;
	287	dk->pid = fork();
288	if (dk->pid < 0) {
289	perror("fork");
290	exit(8);
291	}
292	if (dk->pid == 0) {
293	(void)signal(SIGQUIT, voidquit);
294	checkfilesys(dk->part->name);
295	exit(0);
296	}
297	}
298
d2c95d76 BJ	299	checkfilesys(filesys)
d2c95d76 BJ	300	char *filesys;
6e884967	301	{
993a756c	302	daddr_t n_ffree, n_bfree;
d4233021	303	struct dups *dp;
1a02fd3a	304	struct zlncnt *zlnp;
6e884967	305
d2c95d76	306	devname = filesys;
5eeaeb24 MK	307	if (debug && preen)
5eeaeb24 MK	308	pwarn("starting\n");
d2c95d76	309	if (setup(filesys) == 0) {
6e884967	310	if (preen)
d2c95d76	311	pfatal("CAN'T CHECK FILE SYSTEM.");
6e884967 KM	312	return;
6e884967 KM	313	}
993a756c KM	314	/*
	315	* 1: scan inodes tallying blocks used
	316	*/
690f77ba KM	317	if (preen == 0) {
690f77ba KM	318	printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
6e884967 KM	319	if (hotroot)
	320	printf("** Root file system\n");
	321	printf("** Phase 1 - Check Blocks and Sizes\n");
	322	}
d2c95d76 BJ	323	pass1();
d2c95d76 BJ	324
993a756c KM	325	/*
	326	* 1b: locate first references to duplicates, if any
	327	*/
62e6c152	328	if (duplist) {
d2c95d76 BJ	329	if (preen)
	330	pfatal("INTERNAL ERROR: dups with -p");
	331	printf("** Phase 1b - Rescan For More DUPS\n");
	332	pass1b();
	333	}
	334
993a756c KM	335	/*
	336	* 2: traverse directories from root to mark all connected directories
	337	*/
d2c95d76 BJ	338	if (preen == 0)
	339	printf("** Phase 2 - Check Pathnames\n");
	340	pass2();
	341
993a756c KM	342	/*
	343	* 3: scan inodes looking for disconnected directories
	344	*/
d2c95d76 BJ	345	if (preen == 0)
	346	printf("** Phase 3 - Check Connectivity\n");
	347	pass3();
	348
993a756c KM	349	/*
	350	* 4: scan inodes looking for disconnected files; check reference counts
	351	*/
d2c95d76 BJ	352	if (preen == 0)
	353	printf("** Phase 4 - Check Reference Counts\n");
	354	pass4();
	355
993a756c KM	356	/*
	357	* 5: check and repair resource counts in cylinder groups
	358	*/
d2c95d76 BJ	359	if (preen == 0)
	360	printf("** Phase 5 - Check Cyl groups\n");
	361	pass5();
	362
993a756c KM	363	/*
	364	* print out summary statistics
	365	*/
	366	n_ffree = sblock.fs_cstotal.cs_nffree;
	367	n_bfree = sblock.fs_cstotal.cs_nbfree;
8755a38b KM	368	pwarn("%d files, %d used, %d free ",
	369	n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
	370	printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
	371	n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
993a756c KM	372	if (debug && (n_files -= imax - ROOTINO - sblock.fs_cstotal.cs_nifree))
	373	printf("%d files missing\n", n_files);
	374	if (debug) {
	375	n_blks += sblock.fs_ncg *
	376	(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
	377	n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
	378	n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
	379	if (n_blks -= fmax - (n_ffree + sblock.fs_frag * n_bfree))
	380	printf("%d blocks missing\n", n_blks);
d4233021 KM	381	if (duplist != NULL) {
	382	printf("The following duplicate blocks remain:");
	383	for (dp = duplist; dp; dp = dp->next)
	384	printf(" %d,", dp->dup);
	385	printf("\n");
	386	}
1a02fd3a KM	387	if (zlnhead != NULL) {
	388	printf("The following zero link count inodes remain:");
	389	for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
	390	printf(" %d,", zlnp->zlncnt);
	391	printf("\n");
	392	}
d2c95d76	393	}
1a02fd3a KM	394	zlnhead = (struct zlncnt *)0;
1a02fd3a KM	395	duplist = (struct dups *)0;
d2c95d76	396	if (dfile.mod) {
1a724405	397	(void)time(&sblock.fs_time);
d2c95d76 BJ	398	sbdirty();
	399	}
	400	ckfini();
	401	free(blockmap);
d2c95d76	402	free(statemap);
1a724405	403	free((char *)lncntp);
addfa1aa BJ	404	if (!dfile.mod)
	405	return;
	406	if (!preen) {
	407	printf("\n*** FILE SYSTEM WAS MODIFIED ***\n");
	408	if (hotroot)
	409	printf("\n*** REBOOT UNIX ***\n");
	410	}
	411	if (hotroot) {
	412	sync();
	413	exit(4);
f5971be7	414	}
f5971be7	415	}
7718c0e6 KM	416
	417	char *
	418	blockcheck(name)
	419	char *name;
	420	{
	421	struct stat stslash, stblock, stchar;
	422	char *raw;
	423	int looped = 0;
	424
	425	hotroot = 0;
	426	if (stat("/", &stslash) < 0){
cfbff64d	427	perror("/");
7718c0e6 KM	428	printf("Can't stat root\n");
	429	return (0);
	430	}
	431	retry:
	432	if (stat(name, &stblock) < 0){
cfbff64d	433	perror(name);
7718c0e6 KM	434	printf("Can't stat %s\n", name);
	435	return (0);
	436	}
e8c2f9ee	437	if ((stblock.st_mode & S_IFMT) == S_IFBLK) {
cfbff64d MK	438	if (stslash.st_dev == stblock.st_rdev) {
	439	hotroot++;
	440	return (name);
	441	}
7718c0e6 KM	442	raw = rawname(name);
7718c0e6 KM	443	if (stat(raw, &stchar) < 0){
cfbff64d	444	perror(raw);
7718c0e6	445	printf("Can't stat %s\n", raw);
cfbff64d	446	return (name);
7718c0e6	447	}
cfbff64d	448	if ((stchar.st_mode & S_IFMT) == S_IFCHR)
7718c0e6	449	return (raw);
cfbff64d	450	else {
7718c0e6	451	printf("%s is not a character device\n", raw);
cfbff64d	452	return (name);
7718c0e6	453	}
e8c2f9ee	454	} else if ((stblock.st_mode & S_IFMT) == S_IFCHR) {
7718c0e6 KM	455	if (looped) {
	456	printf("Can't make sense out of name %s\n", name);
	457	return (0);
	458	}
	459	name = unrawname(name);
	460	looped++;
	461	goto retry;
	462	}
	463	printf("Can't make sense out of name %s\n", name);
	464	return (0);
	465	}
	466
	467	char *
	468	unrawname(cp)
	469	char *cp;
	470	{
	471	char *dp = rindex(cp, '/');
	472	struct stat stb;
	473
	474	if (dp == 0)
	475	return (cp);
	476	if (stat(cp, &stb) < 0)
	477	return (cp);
	478	if ((stb.st_mode&S_IFMT) != S_IFCHR)
	479	return (cp);
	480	if (*(dp+1) != 'r')
	481	return (cp);
	482	(void)strcpy(dp+1, dp+2);
	483	return (cp);
	484	}
	485
	486	char *
	487	rawname(cp)
	488	char *cp;
	489	{
	490	static char rawbuf[32];
	491	char *dp = rindex(cp, '/');
	492
	493	if (dp == 0)
	494	return (0);
	495	*dp = 0;
	496	(void)strcpy(rawbuf, cp);
	497	*dp = '/';
	498	(void)strcat(rawbuf, "/r");
	499	(void)strcat(rawbuf, dp+1);
	500	return (rawbuf);
	501	}