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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/scan_ffs/scan_ffs.c	Lines:	0	71	0.0 %
Date:	2017-11-07	Branches:	0	42	0.0 %


/*	$OpenBSD: scan_ffs.c,v 1.21 2015/11/23 19:19:30 deraadt Exp $	*/

/*
 * Copyright (c) 1998 Niklas Hallqvist, Tobias Weingartner
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/types.h>
#include <sys/fcntl.h>
#include <ufs/ffs/fs.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <limits.h>
#include <err.h>
#include <util.h>

#define SBCOUNT 64		/* XXX - Should be configurable */

/* Flags to control ourselves... */
#define FLAG_VERBOSE		1
#define FLAG_SMART		2
#define FLAG_LABELS		4

static void usage(void);

static int
ufsscan(int fd, daddr_t beg, daddr_t end, int flags)
{
	static char lastmount[MAXMNTLEN];
	static u_int8_t buf[SBSIZE * SBCOUNT];
	struct fs *sb;
	daddr_t blk, lastblk;
	int n;

	lastblk = -1;
	memset(lastmount, 0, MAXMNTLEN);

	for (blk = beg; blk <= ((end<0)?blk:end); blk += (SBCOUNT*SBSIZE/512)){
		memset(buf, 0, SBSIZE * SBCOUNT);
		if (lseek(fd, (off_t)blk * 512, SEEK_SET) < 0)
		    err(1, "lseek");
		if (read(fd, buf, SBSIZE * SBCOUNT) < 0)
			err(1, "read");

		for (n = 0; n < (SBSIZE * SBCOUNT); n += 512){
			sb = (struct fs*)(&buf[n]);
			if (sb->fs_magic == FS_MAGIC) {
				if (flags & FLAG_VERBOSE)
					printf("block %lld id %x,%x size %d\n",
					    (long long)(blk + (n/512)),
					    sb->fs_id[0], sb->fs_id[1],
					    sb->fs_ffs1_size);

				if (((blk+(n/512)) - lastblk) == (SBSIZE/512)) {
					if (flags & FLAG_LABELS ) {
						printf("X: %lld %lld 4.2BSD %d %d %d # %s\n",
						    ((off_t)sb->fs_ffs1_size *
						    sb->fs_fsize / 512),
						    (long long)(blk + (n/512) -
						    (2*SBSIZE/512)),
						    sb->fs_fsize, sb->fs_bsize,
						    sb->fs_cpg, lastmount);
					} else {
						/* XXX 2038 */
						time_t t = sb->fs_ffs1_time;

						printf("ffs at %lld size %lld "
						    "mount %s time %s",
						    (long long)(blk+(n/512) -
						    (2*SBSIZE/512)),
						    (long long)(off_t)sb->fs_ffs1_size *
						    sb->fs_fsize,
						    lastmount, ctime(&t));
					}

					if (flags & FLAG_SMART) {
						off_t size = (off_t)sb->fs_ffs1_size *
						    sb->fs_fsize;

						if ((n + size) < (SBSIZE * SBCOUNT))
							n += size;
						else {
							blk += (size/512 -
							    (SBCOUNT*SBCOUNT));
							break;
						}
					}
				}

				/* Update last potential FS SBs seen */
				lastblk = blk + (n/512);
				memcpy(lastmount, sb->fs_fsmnt, MAXMNTLEN);
			}
		}
	}
	return(0);
}


static void
usage(void)
{
	extern char *__progname;

	fprintf(stderr, "usage: %s [-lsv] [-b begin] [-e end] device\n",
	    __progname);
	exit(1);
}


int
main(int argc, char *argv[])
{
	int ch, fd, flags = 0;
	daddr_t beg = 0, end = -1;
	const char *errstr;

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

	while ((ch = getopt(argc, argv, "lsvb:e:")) != -1)
		switch(ch) {
		case 'b':
			beg = strtonum(optarg, 0, LLONG_MAX, &errstr);
			if (errstr)
				errx(1, "%s: %s", optarg, errstr);
			break;
		case 'e':
			end = strtonum(optarg, 0, LLONG_MAX, &errstr);
			if (errstr)
				errx(1, "%s: %s", optarg, errstr);
			break;
		case 'v':
			flags |= FLAG_VERBOSE;
			break;
		case 's':
			flags |= FLAG_SMART;
			break;
		case 'l':
			flags |= FLAG_LABELS;
			break;
		default:
			usage();
			/* NOTREACHED */
	}
	argc -= optind;
	argv += optind;

	if (argc != 1)
		usage();

	fd = opendev(argv[0], O_RDONLY, OPENDEV_PART, NULL);
	if (fd < 0)
		err(1, "%s", argv[0]);

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

	return (ufsscan(fd, beg, end, flags));
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: scan_ffs.c,v 1.21 2015/11/23 19:19:30 deraadt Exp $ */
2
3			/*
4			* Copyright (c) 1998 Niklas Hallqvist, Tobias Weingartner
5			* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			*
16			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26			*/
27
28			#include <sys/types.h>
29			#include <sys/fcntl.h>
30			#include <ufs/ffs/fs.h>
31			#include <unistd.h>
32			#include <stdlib.h>
33			#include <stdio.h>
34			#include <string.h>
35			#include <time.h>
36			#include <limits.h>
37			#include <err.h>
38			#include <util.h>
39
40			#define SBCOUNT 64 /* XXX - Should be configurable */
41
42			/* Flags to control ourselves... */
43			#define FLAG_VERBOSE 1
44			#define FLAG_SMART 2
45			#define FLAG_LABELS 4
46
47			static void usage(void);
48
49			static int
50			ufsscan(int fd, daddr_t beg, daddr_t end, int flags)
51			{
52			static char lastmount[MAXMNTLEN];
53			static u_int8_t buf[SBSIZE * SBCOUNT];
54			struct fs *sb;
55			daddr_t blk, lastblk;
56			int n;
57
58			lastblk = -1;
59			memset(lastmount, 0, MAXMNTLEN);
60
61			for (blk = beg; blk <= ((end<0)?blk:end); blk += (SBCOUNT*SBSIZE/512)){
62			memset(buf, 0, SBSIZE * SBCOUNT);
63			if (lseek(fd, (off_t)blk * 512, SEEK_SET) < 0)
64			err(1, "lseek");
65			if (read(fd, buf, SBSIZE * SBCOUNT) < 0)
66			err(1, "read");
67
68			for (n = 0; n < (SBSIZE * SBCOUNT); n += 512){
69			sb = (struct fs*)(&buf[n]);
70			if (sb->fs_magic == FS_MAGIC) {
71			if (flags & FLAG_VERBOSE)
72			printf("block %lld id %x,%x size %d\n",
73			(long long)(blk + (n/512)),
74			sb->fs_id[0], sb->fs_id[1],
75			sb->fs_ffs1_size);
76
77			if (((blk+(n/512)) - lastblk) == (SBSIZE/512)) {
78			if (flags & FLAG_LABELS ) {
79			printf("X: %lld %lld 4.2BSD %d %d %d # %s\n",
80			((off_t)sb->fs_ffs1_size *
81			sb->fs_fsize / 512),
82			(long long)(blk + (n/512) -
83			(2*SBSIZE/512)),
84			sb->fs_fsize, sb->fs_bsize,
85			sb->fs_cpg, lastmount);
86			} else {
87			/* XXX 2038 */
88			time_t t = sb->fs_ffs1_time;
89
90			printf("ffs at %lld size %lld "
91			"mount %s time %s",
92			(long long)(blk+(n/512) -
93			(2*SBSIZE/512)),
94			(long long)(off_t)sb->fs_ffs1_size *
95			sb->fs_fsize,
96			lastmount, ctime(&t));
97			}
98
99			if (flags & FLAG_SMART) {
100			off_t size = (off_t)sb->fs_ffs1_size *
101			sb->fs_fsize;
102
103			if ((n + size) < (SBSIZE * SBCOUNT))
104			n += size;
105			else {
106			blk += (size/512 -
107			(SBCOUNT*SBCOUNT));
108			break;
109			}
110			}
111			}
112
113			/* Update last potential FS SBs seen */
114			lastblk = blk + (n/512);
115			memcpy(lastmount, sb->fs_fsmnt, MAXMNTLEN);
116			}
117			}
118			}
119			return(0);
120			}
121
122
123			static void
124			usage(void)
125			{
126			extern char *__progname;
127
128			fprintf(stderr, "usage: %s [-lsv] [-b begin] [-e end] device\n",
129			__progname);
130			exit(1);
131			}
132
133
134			int
135			main(int argc, char *argv[])
136			{
137			int ch, fd, flags = 0;
138			daddr_t beg = 0, end = -1;
139			const char *errstr;
140
141			if (pledge("stdio rpath disklabel flock cpath wpath", NULL) == -1)
142			err(1, "pledge");
143
144			while ((ch = getopt(argc, argv, "lsvb:e:")) != -1)
145			switch(ch) {
146			case 'b':
147			beg = strtonum(optarg, 0, LLONG_MAX, &errstr);
148			if (errstr)
149			errx(1, "%s: %s", optarg, errstr);
150			break;
151			case 'e':
152			end = strtonum(optarg, 0, LLONG_MAX, &errstr);
153			if (errstr)
154			errx(1, "%s: %s", optarg, errstr);
155			break;
156			case 'v':
157			flags \|= FLAG_VERBOSE;
158			break;
159			case 's':
160			flags \|= FLAG_SMART;
161			break;
162			case 'l':
163			flags \|= FLAG_LABELS;
164			break;
165			default:
166			usage();
167			/* NOTREACHED */
168			}
169			argc -= optind;
170			argv += optind;
171
172			if (argc != 1)
173			usage();
174
175			fd = opendev(argv[0], O_RDONLY, OPENDEV_PART, NULL);
176			if (fd < 0)
177			err(1, "%s", argv[0]);
178
179			if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
180			err(1, "pledge");
181
182			return (ufsscan(fd, beg, end, flags));
183			}