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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/clri/clri.c	Lines:	0	50	0.0 %
Date:	2016-12-06	Branches:	0	38	0.0 %


/*	$OpenBSD: clri.c,v 1.19 2016/03/07 21:47:04 natano Exp $	*/
/*	$NetBSD: clri.c,v 1.19 2005/01/20 15:50:47 xtraeme Exp $	*/

/*
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rich $alz of BBN Inc.
 *
 * 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.
 */

#include <sys/param.h>	/* MAXBSIZE DEV_BSIZE */

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

#include <err.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <util.h>

/*
 * Possible superblock locations ordered from most to least likely.
 */
static int sblock_try[] = SBLOCKSEARCH;

static void
usage(void)
{
	(void)fprintf(stderr, "usage: clri special_device inode_number ...\n");
	exit(1);
}

int
main(int argc, char *argv[])
{
	struct ufs1_dinode *dp1;
	struct ufs2_dinode *dp2;
	struct fs *sbp;
	char *ibuf[MAXBSIZE];
	char *fs, sblock[SBLOCKSIZE];
	size_t bsize;
	off_t offset;
	int i, fd, imax, inonum;

	if (argc < 3)
		usage();

	fs = *++argv;
	sbp = NULL;

	/* get the superblock. */
	if ((fd = opendev(fs, O_RDWR, 0, NULL)) < 0)
		err(1, "%s", fs);

	if (pledge("stdio rpath cpath wpath", NULL) == -1)
		err(1, "pledge");

	for (i = 0; sblock_try[i] != -1; i++) {
		offset = (off_t)(sblock_try[i]);
		if (pread(fd, sblock, sizeof(sblock), offset) != sizeof(sblock))
			err(1, "%s: can't read superblock", fs);
		sbp = (struct fs *)sblock;
		if ((sbp->fs_magic == FS_UFS1_MAGIC ||
		     (sbp->fs_magic == FS_UFS2_MAGIC &&
		      sbp->fs_sblockloc == sblock_try[i])) &&
		    sbp->fs_bsize <= MAXBSIZE &&
		    sbp->fs_bsize >= (int)sizeof(struct fs))
			break;
	}
	if (sblock_try[i] == -1)
		errx(2, "cannot find file system superblock");
	bsize = sbp->fs_bsize;

	/* check that inode numbers are valid */
	imax = sbp->fs_ncg * sbp->fs_ipg;
	for (i = 1; i < (argc - 1); i++) {
		const char *errstr;
		strtonum(argv[i], 1, imax, &errstr);
		if (errstr)
			errx(1, "%s is not a valid inode number: %s", argv[i], errstr);
	}

	/* clear the clean flag in the superblock */
	if (sbp->fs_inodefmt >= FS_44INODEFMT) {
		sbp->fs_clean = 0;
		if (pwrite(fd, sblock, sizeof(sblock), offset) != sizeof(sblock))
			err(1, "%s: can't update superblock", fs);
		(void)fsync(fd);
	}

	/* remaining arguments are inode numbers. */
	while (*++argv) {
		/* get the inode number. */
		inonum = strtonum(*argv, 1, imax, NULL);
		(void)printf("clearing %u\n", inonum);

		/* read in the appropriate block. */
		offset = ino_to_fsba(sbp, inonum);	/* inode to fs blk */
		offset = fsbtodb(sbp, offset);		/* fs blk disk blk */
		offset *= DEV_BSIZE;			/* disk blk to bytes */

		/* seek and read the block */
		if (pread(fd, ibuf, bsize, offset) != bsize)
			err(1, "%s", fs);

		if (sbp->fs_magic == FS_UFS2_MAGIC) {
			/* get the inode within the block. */
			dp2 = &(((struct ufs2_dinode *)ibuf)
			    [ino_to_fsbo(sbp, inonum)]);

			/* clear the inode, and bump the generation count. */
			memset(dp2, 0, sizeof(*dp2));
			dp2->di_gen = arc4random();
		} else {
			/* get the inode within the block. */
			dp1 = &(((struct ufs1_dinode *)ibuf)
			    [ino_to_fsbo(sbp, inonum)]);

			/* clear the inode, and bump the generation count. */
			memset(dp1, 0, sizeof(*dp1));
			dp1->di_gen = arc4random();
		}

		/* backup and write the block */
		if (pwrite(fd, ibuf, bsize, offset) != bsize)
			err(1, "%s", fs);
		(void)fsync(fd);
	}
	(void)close(fd);
	exit(0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: clri.c,v 1.19 2016/03/07 21:47:04 natano Exp $ */
2			/* $NetBSD: clri.c,v 1.19 2005/01/20 15:50:47 xtraeme Exp $ */
3
4			/*
5			* Copyright (c) 1990, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Rich $alz of BBN Inc.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include <sys/param.h> /* MAXBSIZE DEV_BSIZE */
37
38			#include <ufs/ufs/dinode.h>
39			#include <ufs/ffs/fs.h>
40
41			#include <err.h>
42			#include <fcntl.h>
43			#include <stdlib.h>
44			#include <string.h>
45			#include <stdio.h>
46			#include <unistd.h>
47			#include <util.h>
48
49			/*
50			* Possible superblock locations ordered from most to least likely.
51			*/
52			static int sblock_try[] = SBLOCKSEARCH;
53
54			static void
55			usage(void)
56			{
57			(void)fprintf(stderr, "usage: clri special_device inode_number ...\n");
58			exit(1);
59			}
60
61			int
62			main(int argc, char *argv[])
63			{
64			struct ufs1_dinode *dp1;
65			struct ufs2_dinode *dp2;
66			struct fs *sbp;
67			char *ibuf[MAXBSIZE];
68			char *fs, sblock[SBLOCKSIZE];
69			size_t bsize;
70			off_t offset;
71			int i, fd, imax, inonum;
72
73			if (argc < 3)
74			usage();
75
76			fs = *++argv;
77			sbp = NULL;
78
79			/* get the superblock. */
80			if ((fd = opendev(fs, O_RDWR, 0, NULL)) < 0)
81			err(1, "%s", fs);
82
83			if (pledge("stdio rpath cpath wpath", NULL) == -1)
84			err(1, "pledge");
85
86			for (i = 0; sblock_try[i] != -1; i++) {
87			offset = (off_t)(sblock_try[i]);
88			if (pread(fd, sblock, sizeof(sblock), offset) != sizeof(sblock))
89			err(1, "%s: can't read superblock", fs);
90			sbp = (struct fs *)sblock;
91			if ((sbp->fs_magic == FS_UFS1_MAGIC \|\|
92			(sbp->fs_magic == FS_UFS2_MAGIC &&
93			sbp->fs_sblockloc == sblock_try[i])) &&
94			sbp->fs_bsize <= MAXBSIZE &&
95			sbp->fs_bsize >= (int)sizeof(struct fs))
96			break;
97			}
98			if (sblock_try[i] == -1)
99			errx(2, "cannot find file system superblock");
100			bsize = sbp->fs_bsize;
101
102			/* check that inode numbers are valid */
103			imax = sbp->fs_ncg * sbp->fs_ipg;
104			for (i = 1; i < (argc - 1); i++) {
105			const char *errstr;
106			strtonum(argv[i], 1, imax, &errstr);
107			if (errstr)
108			errx(1, "%s is not a valid inode number: %s", argv[i], errstr);
109			}
110
111			/* clear the clean flag in the superblock */
112			if (sbp->fs_inodefmt >= FS_44INODEFMT) {
113			sbp->fs_clean = 0;
114			if (pwrite(fd, sblock, sizeof(sblock), offset) != sizeof(sblock))
115			err(1, "%s: can't update superblock", fs);
116			(void)fsync(fd);
117			}
118
119			/* remaining arguments are inode numbers. */
120			while (*++argv) {
121			/* get the inode number. */
122			inonum = strtonum(*argv, 1, imax, NULL);
123			(void)printf("clearing %u\n", inonum);
124
125			/* read in the appropriate block. */
126			offset = ino_to_fsba(sbp, inonum); /* inode to fs blk */
127			offset = fsbtodb(sbp, offset); /* fs blk disk blk */
128			offset = DEV_BSIZE; / disk blk to bytes */
129
130			/* seek and read the block */
131			if (pread(fd, ibuf, bsize, offset) != bsize)
132			err(1, "%s", fs);
133
134			if (sbp->fs_magic == FS_UFS2_MAGIC) {
135			/* get the inode within the block. */
136			dp2 = &(((struct ufs2_dinode *)ibuf)
137			[ino_to_fsbo(sbp, inonum)]);
138
139			/* clear the inode, and bump the generation count. */
140			memset(dp2, 0, sizeof(*dp2));
141			dp2->di_gen = arc4random();
142			} else {
143			/* get the inode within the block. */
144			dp1 = &(((struct ufs1_dinode *)ibuf)
145			[ino_to_fsbo(sbp, inonum)]);
146
147			/* clear the inode, and bump the generation count. */
148			memset(dp1, 0, sizeof(*dp1));
149			dp1->di_gen = arc4random();
150			}
151
152			/* backup and write the block */
153			if (pwrite(fd, ibuf, bsize, offset) != bsize)
154			err(1, "%s", fs);
155			(void)fsync(fd);
156			}
157			(void)close(fd);
158			exit(0);
159			}