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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/badsect/badsect.c	Lines:	0	60	0.0 %
Date:	2017-11-07	Branches:	0	42	0.0 %


/*	$OpenBSD: badsect.c,v 1.27 2015/11/12 22:33:07 deraadt Exp $	*/
/*	$NetBSD: badsect.c,v 1.10 1995/03/18 14:54:28 cgd Exp $	*/

/*
 * Copyright (c) 1981, 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * badsect
 *
 * Badsect takes a list of file-system relative sector numbers
 * and makes files containing the blocks of which these sectors are a part.
 * It can be used to contain sectors which have problems if these sectors
 * are not part of the bad file for the pack (see bad144).  For instance,
 * this program can be used if the driver for the file system in question
 * does not support bad block forwarding.
 */
#include <sys/param.h>	/* MAXBSIZE DEV_BSIZE isclr */
#include <sys/stat.h>

#include <ufs/ffs/fs.h>
#include <ufs/ufs/dinode.h>

#include <dirent.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <err.h>

static int chkuse(daddr_t, int);
static void rdfs(daddr_t, int, char *);

static union {
	struct	fs fs;
	char	fsx[SBSIZE];
} ufs;
#define sblock	ufs.fs
static union {
	struct	cg cg;
	char	cgx[MAXBSIZE];
} ucg;
#define	acg	ucg.cg
static struct	fs *fs;
static int	fsi;
static int	errs;

int
main(int argc, char *argv[])
{
	daddr_t number;
	struct stat stbuf, devstat;
	struct dirent *dp;
	DIR *dirp;
	char name[BUFSIZ];
	int len;

	if (argc < 3) {
		fprintf(stderr, "usage: badsect bbdir sector ...\n");
		exit(1);
	}
	if (chdir(argv[1]) < 0 || stat(".", &stbuf) < 0)
		err(2, "%s", argv[1]);

	strlcpy(name, _PATH_DEV, sizeof name);
	len = strlen(name);
	if ((dirp = opendir(name)) == NULL)
		err(3, "%s", name);

	while ((dp = readdir(dirp)) != NULL) {
		strlcpy(&name[len], dp->d_name, sizeof name - len);
		if (stat(name, &devstat) < 0)
			err(4, "%s", name);

		if (stbuf.st_dev == devstat.st_rdev &&
		    S_ISBLK(devstat.st_mode))
			break;
	}

	/*
	 * We've found the block device, but since the filesystem
	 * is mounted, we must write to the raw (character) device
	 * instead. This is not guaranteed to work if someone has a
	 * /dev that doesn't follow standard naming conventions, but
	 * it's all we've got.
	 */
	name[len] = 'r';
	strlcpy(&name[len+1], dp->d_name, sizeof name - (len+1));
	closedir(dirp);
	if (dp == NULL)
		err(5, "Cannot find dev 0%o corresponding to %s",
			stbuf.st_rdev, argv[1]);

	if ((fsi = open(name, O_RDONLY)) < 0)
		err(6, "%s", name);

	fs = &sblock;
	rdfs(SBOFF, SBSIZE, (char *)fs);
	for (argc -= 2, argv += 2; argc > 0; argc--, argv++) {
		number = strtonum(*argv, 0, QUAD_MAX, NULL);
		if (chkuse(number, 1))
			continue;
		if (mknod(*argv, S_IFMT|S_IRUSR|S_IWUSR,
		    dbtofsb(fs, number)) < 0) {
			warn("%s", *argv);
			errs++;
		}
	}
	printf("Don't forget to run ``fsck %s''\n", name);
	exit(errs);
}

static int
chkuse(daddr_t blkno, int cnt)
{
	int cg;
	daddr_t fsbn, bn;

	fsbn = dbtofsb(fs, blkno);
	if (fsbn+cnt > fs->fs_ffs1_size) {
		fprintf(stderr, "block %lld out of range of file system\n",
		    (long long)blkno);
		return (1);
	}
	cg = dtog(fs, fsbn);
	if (fsbn < cgdmin(fs, cg)) {
		if (cg == 0 || (fsbn+cnt) > cgsblock(fs, cg)) {
			fprintf(stderr, "block %lld in non-data area: cannot "
			    "attach\n", (long long)blkno);
			return (1);
		}
	} else {
		if ((fsbn+cnt) > cgbase(fs, cg+1)) {
			fprintf(stderr, "block %lld in non-data area: cannot "
			    "attach\n", (long long)blkno);
			return (1);
		}
	}
	rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize,
	    (char *)&acg);
	if (!cg_chkmagic(&acg)) {
		fprintf(stderr, "cg %d: bad magic number\n", cg);
		errs++;
		return (1);
	}
	bn = dtogd(fs, fsbn);
	if (isclr(cg_blksfree(&acg), bn))
		fprintf(stderr, "Warning: sector %lld is in use\n",
		    (long long)blkno);
	return (0);
}

/*
 * read a block from the file system
 */
static void
rdfs(daddr_t bno, int size, char *bf)
{
	if (pread(fsi, bf, size, bno * DEV_BSIZE) != size) {
		fprintf(stderr, "read error: %lld\n", (long long)bno);
		err(1, "rdfs");
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: badsect.c,v 1.27 2015/11/12 22:33:07 deraadt Exp $ */
2			/* $NetBSD: badsect.c,v 1.10 1995/03/18 14:54:28 cgd Exp $ */
3
4			/*
5			* Copyright (c) 1981, 1983, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			/*
34			* badsect
35			*
36			* Badsect takes a list of file-system relative sector numbers
37			* and makes files containing the blocks of which these sectors are a part.
38			* It can be used to contain sectors which have problems if these sectors
39			* are not part of the bad file for the pack (see bad144). For instance,
40			* this program can be used if the driver for the file system in question
41			* does not support bad block forwarding.
42			*/
43			#include <sys/param.h> /* MAXBSIZE DEV_BSIZE isclr */
44			#include <sys/stat.h>
45
46			#include <ufs/ffs/fs.h>
47			#include <ufs/ufs/dinode.h>
48
49			#include <dirent.h>
50			#include <fcntl.h>
51			#include <paths.h>
52			#include <stdio.h>
53			#include <stdlib.h>
54			#include <string.h>
55			#include <unistd.h>
56			#include <limits.h>
57			#include <err.h>
58
59			static int chkuse(daddr_t, int);
60			static void rdfs(daddr_t, int, char *);
61
62			static union {
63			struct fs fs;
64			char fsx[SBSIZE];
65			} ufs;
66			#define sblock ufs.fs
67			static union {
68			struct cg cg;
69			char cgx[MAXBSIZE];
70			} ucg;
71			#define acg ucg.cg
72			static struct fs *fs;
73			static int fsi;
74			static int errs;
75
76			int
77			main(int argc, char *argv[])
78			{
79			daddr_t number;
80			struct stat stbuf, devstat;
81			struct dirent *dp;
82			DIR *dirp;
83			char name[BUFSIZ];
84			int len;
85
86			if (argc < 3) {
87			fprintf(stderr, "usage: badsect bbdir sector ...\n");
88			exit(1);
89			}
90			if (chdir(argv[1]) < 0 \|\| stat(".", &stbuf) < 0)
91			err(2, "%s", argv[1]);
92
93			strlcpy(name, _PATH_DEV, sizeof name);
94			len = strlen(name);
95			if ((dirp = opendir(name)) == NULL)
96			err(3, "%s", name);
97
98			while ((dp = readdir(dirp)) != NULL) {
99			strlcpy(&name[len], dp->d_name, sizeof name - len);
100			if (stat(name, &devstat) < 0)
101			err(4, "%s", name);
102
103			if (stbuf.st_dev == devstat.st_rdev &&
104			S_ISBLK(devstat.st_mode))
105			break;
106			}
107
108			/*
109			* We've found the block device, but since the filesystem
110			* is mounted, we must write to the raw (character) device
111			* instead. This is not guaranteed to work if someone has a
112			* /dev that doesn't follow standard naming conventions, but
113			* it's all we've got.
114			*/
115			name[len] = 'r';
116			strlcpy(&name[len+1], dp->d_name, sizeof name - (len+1));
117			closedir(dirp);
118			if (dp == NULL)
119			err(5, "Cannot find dev 0%o corresponding to %s",
120			stbuf.st_rdev, argv[1]);
121
122			if ((fsi = open(name, O_RDONLY)) < 0)
123			err(6, "%s", name);
124
125			fs = &sblock;
126			rdfs(SBOFF, SBSIZE, (char *)fs);
127			for (argc -= 2, argv += 2; argc > 0; argc--, argv++) {
128			number = strtonum(*argv, 0, QUAD_MAX, NULL);
129			if (chkuse(number, 1))
130			continue;
131			if (mknod(*argv, S_IFMT\|S_IRUSR\|S_IWUSR,
132			dbtofsb(fs, number)) < 0) {
133			warn("%s", *argv);
134			errs++;
135			}
136			}
137			printf("Don't forget to run ``fsck %s''\n", name);
138			exit(errs);
139			}
140
141			static int
142			chkuse(daddr_t blkno, int cnt)
143			{
144			int cg;
145			daddr_t fsbn, bn;
146
147			fsbn = dbtofsb(fs, blkno);
148			if (fsbn+cnt > fs->fs_ffs1_size) {
149			fprintf(stderr, "block %lld out of range of file system\n",
150			(long long)blkno);
151			return (1);
152			}
153			cg = dtog(fs, fsbn);
154			if (fsbn < cgdmin(fs, cg)) {
155			if (cg == 0 \|\| (fsbn+cnt) > cgsblock(fs, cg)) {
156			fprintf(stderr, "block %lld in non-data area: cannot "
157			"attach\n", (long long)blkno);
158			return (1);
159			}
160			} else {
161			if ((fsbn+cnt) > cgbase(fs, cg+1)) {
162			fprintf(stderr, "block %lld in non-data area: cannot "
163			"attach\n", (long long)blkno);
164			return (1);
165			}
166			}
167			rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize,
168			(char *)&acg);
169			if (!cg_chkmagic(&acg)) {
170			fprintf(stderr, "cg %d: bad magic number\n", cg);
171			errs++;
172			return (1);
173			}
174			bn = dtogd(fs, fsbn);
175			if (isclr(cg_blksfree(&acg), bn))
176			fprintf(stderr, "Warning: sector %lld is in use\n",
177			(long long)blkno);
178			return (0);
179			}
180
181			/*
182			* read a block from the file system
183			*/
184			static void
185			rdfs(daddr_t bno, int size, char *bf)
186			{
187			if (pread(fsi, bf, size, bno * DEV_BSIZE) != size) {
188			fprintf(stderr, "read error: %lld\n", (long long)bno);
189			err(1, "rdfs");
190			}
191			}