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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/fdisk/fdisk.c	Lines:	0	108	0.0 %
Date:	2016-12-06	Branches:	0	75	0.0 %


/*	$OpenBSD: fdisk.c,v 1.101 2016/06/25 17:03:22 tb Exp $	*/

/*
 * Copyright (c) 1997 Tobias Weingartner
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/disklabel.h>

#include <err.h>
#include <paths.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "disk.h"
#include "part.h"
#include "mbr.h"
#include "misc.h"
#include "cmd.h"
#include "user.h"
#include "gpt.h"

#define _PATH_MBR _PATH_BOOTDIR "mbr"
static unsigned char builtin_mbr[] = {
#include "mbrcode.h"
};

u_int32_t b_arg;
int	y_flag;

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

	fprintf(stderr, "usage: %s "
	    "[-egvy] [-i|-u] [-b #] [-c # -h # -s #] "
	    "[-f mbrfile] [-l # ] disk\n"
	    "\t-b: specify special boot partition block count; requires -i\n"
	    "\t-chs: specify disk geometry; all three must be specified\n"
	    "\t-e: interactively edit MBR or GPT\n"
	    "\t-f: specify non-standard MBR template\n"
	    "\t-g: initialize disk with GPT; requires -i\n"
	    "\t-i: initialize disk with MBR unless -g is also specified\n"
	    "\t-l: specify LBA block count; cannot be used with -chs\n"
	    "\t-u: update MBR code; preserve partition table\n"
	    "\t-v: print the MBR, the Primary GPT and the Secondary GPT\n"
	    "\t-y: do not ask questions\n"
	    "`disk' may be of the forms: sd0 or /dev/rsd0c.\n",
	    __progname);
	exit(1);
}

int
main(int argc, char *argv[])
{
	ssize_t len;
	int ch, fd, error;
	int e_flag = 0, g_flag = 0, i_flag = 0, u_flag = 0;
	int verbosity = 0;
	int c_arg = 0, h_arg = 0, s_arg = 0;
	u_int32_t l_arg = 0;
	char *query;
#ifdef HAS_MBR
	char *mbrfile = _PATH_MBR;
#else
	char *mbrfile = NULL;
#endif
	struct dos_mbr dos_mbr;
	struct mbr mbr;

	while ((ch = getopt(argc, argv, "iegpuvf:c:h:s:l:b:y")) != -1) {
		const char *errstr;

		switch(ch) {
		case 'i':
			i_flag = 1;
			break;
		case 'u':
			u_flag = 1;
			break;
		case 'e':
			e_flag = 1;
			break;
		case 'f':
			mbrfile = optarg;
			break;
		case 'c':
			c_arg = strtonum(optarg, 1, 262144, &errstr);
			if (errstr)
				errx(1, "Cylinder argument %s [1..262144].",
				    errstr);
			disk.cylinders = c_arg;
			disk.size = c_arg * h_arg * s_arg;
			break;
		case 'h':
			h_arg = strtonum(optarg, 1, 256, &errstr);
			if (errstr)
				errx(1, "Head argument %s [1..256].", errstr);
			disk.heads = h_arg;
			disk.size = c_arg * h_arg * s_arg;
			break;
		case 's':
			s_arg = strtonum(optarg, 1, 63, &errstr);
			if (errstr)
				errx(1, "Sector argument %s [1..63].", errstr);
			disk.sectors = s_arg;
			disk.size = c_arg * h_arg * s_arg;
			break;
		case 'g':
			g_flag = 1;
			break;
		case 'b':
			b_arg = strtonum(optarg, 64, UINT32_MAX, &errstr);
			if (errstr)
				errx(1, "Block argument %s [64..%u].", errstr,
				    UINT32_MAX);
			break;
		case 'l':
			l_arg = strtonum(optarg, 64, UINT32_MAX, &errstr);
			if (errstr)
				errx(1, "Block argument %s [64..%u].", errstr,
				    UINT32_MAX);
			disk.cylinders = l_arg / 64;
			disk.heads = 1;
			disk.sectors = 64;
			disk.size = l_arg;
			break;
		case 'y':
			y_flag = 1;
			break;
		case 'v':
			verbosity++;
			break;
		default:
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	/* Argument checking */
	if (argc != 1 || (i_flag && u_flag) ||
	    (i_flag == 0 && (b_arg || g_flag)) ||
	    ((c_arg | h_arg | s_arg) && !(c_arg && h_arg && s_arg)) ||
	    ((c_arg | h_arg | s_arg) && l_arg))
		usage();

	disk.name = argv[0];
	DISK_open(i_flag || u_flag || e_flag);

	/* "proc exec" for man page display */
	if (pledge("stdio rpath wpath disklabel proc exec cpath", NULL) == -1)
		err(1, "pledge");

	error = MBR_read(0, &dos_mbr);
	if (error)
		errx(1, "Can't read sector 0!");
	MBR_parse(&dos_mbr, 0, 0, &mbr);

	/* Get the GPT if present. Either primary or secondary is ok. */
	if (MBR_protective_mbr(&mbr) == 0)
		GPT_get_gpt(0);

	if (letoh64(gh.gh_sig) != GPTSIGNATURE) {
		if (DL_GETDSIZE(&dl) > disk.size)
			warnx("disk too large (%llu sectors). size truncated.",
			    (unsigned long long)DL_GETDSIZE(&dl));
	}

	if (!(i_flag || u_flag || e_flag)) {
		if (pledge("stdio rpath cpath wpath", NULL) == -1)
			err(1, "pledge");
		USER_print_disk(verbosity);
		goto done;
	}

	/* Create initial/default MBR. */
	if (mbrfile == NULL) {
		memcpy(&dos_mbr, builtin_mbr, sizeof(dos_mbr));
	} else {
		fd = open(mbrfile, O_RDONLY);
		if (fd == -1) {
			warn("%s", mbrfile);
			warnx("using builtin MBR");
			memcpy(&dos_mbr, builtin_mbr, sizeof(dos_mbr));
		} else {
			len = read(fd, &dos_mbr, sizeof(dos_mbr));
			close(fd);
			if (len == -1)
				err(1, "Unable to read MBR from '%s'", mbrfile);
			else if (len != sizeof(dos_mbr))
				errx(1, "Unable to read complete MBR from '%s'",
				    mbrfile);
		}
	}
	MBR_parse(&dos_mbr, 0, 0, &initial_mbr);

	query = NULL;
	if (i_flag) {
		reinited = 1;
		if (g_flag) {
			MBR_init_GPT(&initial_mbr);
			GPT_init();
			query = "Do you wish to write new GPT?";
		} else {
			MBR_init(&initial_mbr);
			query = "Do you wish to write new MBR and "
			    "partition table?";
		}
	} else if (u_flag) {
		memcpy(initial_mbr.part, mbr.part, sizeof(initial_mbr.part));
		query = "Do you wish to write new MBR?";
	}
	if (query && ask_yn(query))
		Xwrite(NULL, &initial_mbr);

	if (e_flag)
		USER_edit(0, 0);

done:
	close(disk.fd);

	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: fdisk.c,v 1.101 2016/06/25 17:03:22 tb Exp $ */
2
3			/*
4			* Copyright (c) 1997 Tobias Weingartner
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/types.h>
20			#include <sys/fcntl.h>
21			#include <sys/disklabel.h>
22
23			#include <err.h>
24			#include <paths.h>
25			#include <stdint.h>
26			#include <stdio.h>
27			#include <stdlib.h>
28			#include <string.h>
29			#include <unistd.h>
30
31			#include "disk.h"
32			#include "part.h"
33			#include "mbr.h"
34			#include "misc.h"
35			#include "cmd.h"
36			#include "user.h"
37			#include "gpt.h"
38
39			#define _PATH_MBR _PATH_BOOTDIR "mbr"
40			static unsigned char builtin_mbr[] = {
41			#include "mbrcode.h"
42			};
43
44			u_int32_t b_arg;
45			int y_flag;
46
47			static void
48			usage(void)
49			{
50			extern char * __progname;
51
52			fprintf(stderr, "usage: %s "
53			"[-egvy] [-i\|-u] [-b #] [-c # -h # -s #] "
54			"[-f mbrfile] [-l # ] disk\n"
55			"\t-b: specify special boot partition block count; requires -i\n"
56			"\t-chs: specify disk geometry; all three must be specified\n"
57			"\t-e: interactively edit MBR or GPT\n"
58			"\t-f: specify non-standard MBR template\n"
59			"\t-g: initialize disk with GPT; requires -i\n"
60			"\t-i: initialize disk with MBR unless -g is also specified\n"
61			"\t-l: specify LBA block count; cannot be used with -chs\n"
62			"\t-u: update MBR code; preserve partition table\n"
63			"\t-v: print the MBR, the Primary GPT and the Secondary GPT\n"
64			"\t-y: do not ask questions\n"
65			"`disk' may be of the forms: sd0 or /dev/rsd0c.\n",
66			__progname);
67			exit(1);
68			}
69
70			int
71			main(int argc, char *argv[])
72			{
73			ssize_t len;
74			int ch, fd, error;
75			int e_flag = 0, g_flag = 0, i_flag = 0, u_flag = 0;
76			int verbosity = 0;
77			int c_arg = 0, h_arg = 0, s_arg = 0;
78			u_int32_t l_arg = 0;
79			char *query;
80			#ifdef HAS_MBR
81			char *mbrfile = _PATH_MBR;
82			#else
83			char *mbrfile = NULL;
84			#endif
85			struct dos_mbr dos_mbr;
86			struct mbr mbr;
87
88			while ((ch = getopt(argc, argv, "iegpuvf:c:h:s:l:b:y")) != -1) {
89			const char *errstr;
90
91			switch(ch) {
92			case 'i':
93			i_flag = 1;
94			break;
95			case 'u':
96			u_flag = 1;
97			break;
98			case 'e':
99			e_flag = 1;
100			break;
101			case 'f':
102			mbrfile = optarg;
103			break;
104			case 'c':
105			c_arg = strtonum(optarg, 1, 262144, &errstr);
106			if (errstr)
107			errx(1, "Cylinder argument %s [1..262144].",
108			errstr);
109			disk.cylinders = c_arg;
110			disk.size = c_arg * h_arg * s_arg;
111			break;
112			case 'h':
113			h_arg = strtonum(optarg, 1, 256, &errstr);
114			if (errstr)
115			errx(1, "Head argument %s [1..256].", errstr);
116			disk.heads = h_arg;
117			disk.size = c_arg * h_arg * s_arg;
118			break;
119			case 's':
120			s_arg = strtonum(optarg, 1, 63, &errstr);
121			if (errstr)
122			errx(1, "Sector argument %s [1..63].", errstr);
123			disk.sectors = s_arg;
124			disk.size = c_arg * h_arg * s_arg;
125			break;
126			case 'g':
127			g_flag = 1;
128			break;
129			case 'b':
130			b_arg = strtonum(optarg, 64, UINT32_MAX, &errstr);
131			if (errstr)
132			errx(1, "Block argument %s [64..%u].", errstr,
133			UINT32_MAX);
134			break;
135			case 'l':
136			l_arg = strtonum(optarg, 64, UINT32_MAX, &errstr);
137			if (errstr)
138			errx(1, "Block argument %s [64..%u].", errstr,
139			UINT32_MAX);
140			disk.cylinders = l_arg / 64;
141			disk.heads = 1;
142			disk.sectors = 64;
143			disk.size = l_arg;
144			break;
145			case 'y':
146			y_flag = 1;
147			break;
148			case 'v':
149			verbosity++;
150			break;
151			default:
152			usage();
153			}
154			}
155			argc -= optind;
156			argv += optind;
157
158			/* Argument checking */
159			if (argc != 1 \|\| (i_flag && u_flag) \|\|
160			(i_flag == 0 && (b_arg \|\| g_flag)) \|\|
161			((c_arg \| h_arg \| s_arg) && !(c_arg && h_arg && s_arg)) \|\|
162			((c_arg \| h_arg \| s_arg) && l_arg))
163			usage();
164
165			disk.name = argv[0];
166			DISK_open(i_flag \|\| u_flag \|\| e_flag);
167
168			/* "proc exec" for man page display */
169			if (pledge("stdio rpath wpath disklabel proc exec cpath", NULL) == -1)
170			err(1, "pledge");
171
172			error = MBR_read(0, &dos_mbr);
173			if (error)
174			errx(1, "Can't read sector 0!");
175			MBR_parse(&dos_mbr, 0, 0, &mbr);
176
177			/* Get the GPT if present. Either primary or secondary is ok. */
178			if (MBR_protective_mbr(&mbr) == 0)
179			GPT_get_gpt(0);
180
181			if (letoh64(gh.gh_sig) != GPTSIGNATURE) {
182			if (DL_GETDSIZE(&dl) > disk.size)
183			warnx("disk too large (%llu sectors). size truncated.",
184			(unsigned long long)DL_GETDSIZE(&dl));
185			}
186
187			if (!(i_flag \|\| u_flag \|\| e_flag)) {
188			if (pledge("stdio rpath cpath wpath", NULL) == -1)
189			err(1, "pledge");
190			USER_print_disk(verbosity);
191			goto done;
192			}
193
194			/* Create initial/default MBR. */
195			if (mbrfile == NULL) {
196			memcpy(&dos_mbr, builtin_mbr, sizeof(dos_mbr));
197			} else {
198			fd = open(mbrfile, O_RDONLY);
199			if (fd == -1) {
200			warn("%s", mbrfile);
201			warnx("using builtin MBR");
202			memcpy(&dos_mbr, builtin_mbr, sizeof(dos_mbr));
203			} else {
204			len = read(fd, &dos_mbr, sizeof(dos_mbr));
205			close(fd);
206			if (len == -1)
207			err(1, "Unable to read MBR from '%s'", mbrfile);
208			else if (len != sizeof(dos_mbr))
209			errx(1, "Unable to read complete MBR from '%s'",
210			mbrfile);
211			}
212			}
213			MBR_parse(&dos_mbr, 0, 0, &initial_mbr);
214
215			query = NULL;
216			if (i_flag) {
217			reinited = 1;
218			if (g_flag) {
219			MBR_init_GPT(&initial_mbr);
220			GPT_init();
221			query = "Do you wish to write new GPT?";
222			} else {
223			MBR_init(&initial_mbr);
224			query = "Do you wish to write new MBR and "
225			"partition table?";
226			}
227			} else if (u_flag) {
228			memcpy(initial_mbr.part, mbr.part, sizeof(initial_mbr.part));
229			query = "Do you wish to write new MBR?";
230			}
231			if (query && ask_yn(query))
232			Xwrite(NULL, &initial_mbr);
233
234			if (e_flag)
235			USER_edit(0, 0);
236
237			done:
238			close(disk.fd);
239
240			return (0);
241			}