GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/fsck_ext2fs/main.c Lines: 0 140 0.0 %
Date: 2017-11-07 Branches: 0 89 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: main.c,v 1.27 2016/03/16 15:41:10 krw Exp $	*/
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/*	$NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $	*/
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/*
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 * Copyright (c) 1997 Manuel Bouyer.
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 * Copyright (c) 1980, 1986, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/signal.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <ufs/ext2fs/ext2fs_dinode.h>
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#include <ufs/ext2fs/ext2fs.h>
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#include <fstab.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include <err.h>
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#include "fsck.h"
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#include "extern.h"
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#include "fsutil.h"
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volatile sig_atomic_t	returntosingle;
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int	main(int, char *[]);
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static int	argtoi(int, char *, char *, int);
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static int	checkfilesys(char *, char *, long, int);
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static  void usage(void);
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int
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main(int argc, char *argv[])
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{
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	int ch;
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	int ret = 0;
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	sync();
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	skipclean = 1;
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	while ((ch = getopt(argc, argv, "b:dfm:npy")) != -1) {
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		switch (ch) {
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		case 'b':
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			skipclean = 0;
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			bflag = argtoi('b', "number", optarg, 10);
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			printf("Alternate super block location: %d\n", bflag);
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			break;
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		case 'd':
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			debug = 1;
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			break;
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		case 'f':
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			skipclean = 0;
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			break;
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		case 'm':
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			lfmode = argtoi('m', "mode", optarg, 8);
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			if (lfmode &~ 07777)
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				errexit("bad mode to -m: %o\n", lfmode);
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			printf("** lost+found creation mode %o\n", lfmode);
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			break;
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		case 'n':
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			nflag = 1;
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			yflag = 0;
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			break;
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		case 'p':
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			preen = 1;
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			break;
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		case 'y':
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			yflag = 1;
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			nflag = 0;
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			break;
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		default:
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			usage();
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		}
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	}
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	argc -= optind;
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	argv += optind;
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	if (argc != 1)
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		usage();
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	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
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		(void)signal(SIGINT, catch);
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	if (preen)
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		(void)signal(SIGQUIT, catchquit);
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	(void)checkfilesys(blockcheck(*argv), 0, 0L, 0);
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	if (returntosingle)
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		ret = 2;
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	exit(ret);
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}
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static int
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argtoi(int flag, char *req, char *str, int base)
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{
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	char *cp;
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	int ret;
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	ret = (int)strtol(str, &cp, base);
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	if (cp == str || *cp)
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		errexit("-%c flag requires a %s\n", flag, req);
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	return (ret);
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}
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/*
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 * Check the specified filesystem.
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 */
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/* ARGSUSED */
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static int
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checkfilesys(char *filesys, char *mntpt, long auxdata, int child)
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{
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	daddr32_t n_bfree;
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	struct dups *dp;
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	struct zlncnt *zlnp;
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	int i;
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	if (preen && child)
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		(void)signal(SIGQUIT, voidquit);
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	setcdevname(filesys, NULL, preen);
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	if (debug && preen)
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		pwarn("starting\n");
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	switch (setup(filesys)) {
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	case 0:
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		if (preen)
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			pfatal("CAN'T CHECK FILE SYSTEM.");
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	case -1:
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		return (0);
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	}
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	/*
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	 * 1: scan inodes tallying blocks used
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	 */
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	if (preen == 0) {
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		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
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			printf("** Last Mounted on %s\n",
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			    sblock.e2fs.e2fs_fsmnt);
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		}
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		if (hotroot())
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			printf("** Root file system\n");
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		printf("** Phase 1 - Check Blocks and Sizes\n");
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	}
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	pass1();
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	/*
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	 * 1b: locate first references to duplicates, if any
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	 */
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	if (duplist) {
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		if (preen)
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			pfatal("INTERNAL ERROR: dups with -p");
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		printf("** Phase 1b - Rescan For More DUPS\n");
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		pass1b();
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	}
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	/*
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	 * 2: traverse directories from root to mark all connected directories
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	 */
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	if (preen == 0)
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		printf("** Phase 2 - Check Pathnames\n");
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	pass2();
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	/*
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	 * 3: scan inodes looking for disconnected directories
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	 */
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	if (preen == 0)
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		printf("** Phase 3 - Check Connectivity\n");
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	pass3();
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	/*
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	 * 4: scan inodes looking for disconnected files; check reference counts
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	 */
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	if (preen == 0)
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		printf("** Phase 4 - Check Reference Counts\n");
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	pass4();
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	/*
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	 * 5: check and repair resource counts in cylinder groups
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	 */
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	if (preen == 0)
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		printf("** Phase 5 - Check Cyl groups\n");
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	pass5();
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	/*
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	 * print out summary statistics
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	 */
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	n_bfree = sblock.e2fs.e2fs_fbcount;
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	pwarn("%d files, %d used, %d free\n",
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	    n_files, n_blks, n_bfree);
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	if (debug &&
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		/* 9 reserved and unused inodes in FS */
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	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
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		printf("%d files missing\n", n_files);
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	if (debug) {
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		for (i = 0; i < sblock.e2fs_ncg; i++)
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			n_blks +=  cgoverhead(i);
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		n_blks += sblock.e2fs.e2fs_first_dblock;
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		if (n_blks -= maxfsblock - n_bfree)
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			printf("%d blocks missing\n", n_blks);
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		if (duplist != NULL) {
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			printf("The following duplicate blocks remain:");
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			for (dp = duplist; dp; dp = dp->next)
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				printf(" %d,", dp->dup);
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			printf("\n");
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		}
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		if (zlnhead != NULL) {
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			printf("The following zero link count inodes remain:");
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			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
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				printf(" %llu,",
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				    (unsigned long long)zlnp->zlncnt);
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			printf("\n");
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		}
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	}
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	zlnhead = NULL;
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	duplist = NULL;
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	muldup = NULL;
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	inocleanup();
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	if (fsmodified) {
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		time_t t;
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		(void)time(&t);
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		sblock.e2fs.e2fs_wtime = t;
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		sblock.e2fs.e2fs_lastfsck = t;
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		sbdirty();
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	}
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	ckfini(1);
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	free(blockmap);
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	free(statemap);
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	free((char *)lncntp);
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	if (!fsmodified)
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		return (0);
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	if (!preen)
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		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
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	if (rerun)
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		printf("\n***** PLEASE RERUN FSCK *****\n");
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	if (hotroot()) {
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		struct statfs stfs_buf;
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		/*
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		 * We modified the root.  Do a mount update on
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		 * it, unless it is read-write, so we can continue.
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		 */
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		if (statfs("/", &stfs_buf) == 0) {
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			long flags = stfs_buf.f_flags;
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			struct ufs_args args;
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			int ret;
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			if (flags & MNT_RDONLY) {
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				args.fspec = 0;
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				args.export_info.ex_flags = 0;
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				args.export_info.ex_root = 0;
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				flags |= MNT_UPDATE | MNT_RELOAD;
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				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
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				if (ret == 0)
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					return(0);
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			}
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		}
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		if (!preen)
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			printf("\n***** REBOOT NOW *****\n");
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		sync();
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		return (4);
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	}
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	return (0);
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}
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static void
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usage(void)
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{
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	extern char *__progname;
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	(void) fprintf(stderr,
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	    "usage: %s [-dfnpy] [-b block#] [-m mode] filesystem\n",
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	    __progname);
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	exit(1);
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}