[thirdparty/util-linux.git] / misc-utils / wipefs.c

/*
 * wipefs - utility to wipe filesystems from device
 *
 * Copyright (C) 2009 Red Hat, Inc. All rights reserved.
 * Written by Karel Zak <kzak@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <sys/stat.h>
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <limits.h>

#include <blkid.h>

#include "nls.h"
#include "xalloc.h"
#include "strutils.h"
#include "writeall.h"
#include "c.h"

struct wipe_desc {
	loff_t		offset;		/* magic string offset */
	size_t		len;		/* length of magic string */
	unsigned char	*magic;		/* magic string */

	int		zap;		/* zap this offset? */
	char		*usage;		/* raid, filesystem, ... */
	char		*type;		/* FS type */
	char		*label;		/* FS label */
	char		*uuid;		/* FS uuid */

	int		on_disk;

	struct wipe_desc	*next;
};

#define WP_MODE_PRETTY		0		/* default */
#define WP_MODE_PARSABLE	1

static void
print_pretty(struct wipe_desc *wp, int line)
{
	if (!line) {
		printf("offset               type\n");
		printf("----------------------------------------------------------------\n");
	}

	printf("0x%-17jx  %s   [%s]", wp->offset, wp->type, wp->usage);

	if (wp->label && *wp->label)
		printf("\n%27s %s", "LABEL:", wp->label);
	if (wp->uuid)
		printf("\n%27s %s", "UUID: ", wp->uuid);
	puts("\n");
}

static void
print_parsable(struct wipe_desc *wp, int line)
{
	char enc[256];

	if (!line)
		printf("# offset,uuid,label,type\n");

	printf("0x%jx,", wp->offset);

	if (wp->uuid) {
		blkid_encode_string(wp->uuid, enc, sizeof(enc));
		printf("%s,", enc);
	} else
		fputc(',', stdout);

	if (wp->label) {
		blkid_encode_string(wp->label, enc, sizeof(enc));
		printf("%s,", enc);
	} else
		fputc(',', stdout);

	blkid_encode_string(wp->type, enc, sizeof(enc));
	printf("%s\n", enc);
}

static void
print_all(struct wipe_desc *wp, int mode)
{
	int n = 0;

	while (wp) {
		switch (mode) {
		case WP_MODE_PRETTY:
			print_pretty(wp, n++);
			break;
		case WP_MODE_PARSABLE:
			print_parsable(wp, n++);
			break;
		}
		wp = wp->next;
	}
}

static struct wipe_desc *
add_offset(struct wipe_desc *wp0, loff_t offset, int zap)
{
	struct wipe_desc *wp = wp0;

	while (wp) {
		if (wp->offset == offset)
			return wp;
		wp = wp->next;
	}

	wp = calloc(1, sizeof(struct wipe_desc));
	if (!wp)
		err(EXIT_FAILURE, _("calloc failed"));

	wp->offset = offset;
	wp->next = wp0;
	wp->zap = zap;
	return wp;
}

static struct wipe_desc *
get_desc_for_probe(struct wipe_desc *wp, blkid_probe pr)
{
	const char *off, *type, *mag, *p, *usage = NULL;
	size_t len;
	loff_t offset;
	int rc;

	/* superblocks */
	if (blkid_probe_lookup_value(pr, "TYPE", &type, NULL) == 0) {
		rc = blkid_probe_lookup_value(pr, "SBMAGIC_OFFSET", &off, NULL);
		if (!rc)
			rc = blkid_probe_lookup_value(pr, "SBMAGIC", &mag, &len);
		if (rc)
			return wp;

	/* partitions */
	} else if (blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL) == 0) {
		rc = blkid_probe_lookup_value(pr, "PTMAGIC_OFFSET", &off, NULL);
		if (!rc)
			rc = blkid_probe_lookup_value(pr, "PTMAGIC", &mag, &len);
		if (rc)
			return wp;
		usage = "partition table";
	} else
		return wp;

	offset = strtoll(off, NULL, 10);

	wp = add_offset(wp, offset, 0);
	if (!wp)
		return NULL;

	if (usage || blkid_probe_lookup_value(pr, "USAGE", &usage, NULL) == 0)
		wp->usage = xstrdup(usage);

	wp->type = xstrdup(type);
	wp->on_disk = 1;

	wp->magic = xmalloc(len);
	memcpy(wp->magic, mag, len);
	wp->len = len;

	if (blkid_probe_lookup_value(pr, "LABEL", &p, NULL) == 0)
		wp->label = xstrdup(p);

	if (blkid_probe_lookup_value(pr, "UUID", &p, NULL) == 0)
		wp->uuid = xstrdup(p);

	return wp;
}

static blkid_probe
new_probe(const char *devname, int mode)
{
	blkid_probe pr;

	if (!devname)
		return NULL;

	if (mode) {
		int fd = open(devname, mode);
		if (fd < 0)
			goto error;

		pr = blkid_new_probe();
		if (pr && blkid_probe_set_device(pr, fd, 0, 0))
			goto error;
	} else
		pr = blkid_new_probe_from_filename(devname);

	if (!pr)
		goto error;

	blkid_probe_enable_superblocks(pr, 1);
	blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC |
			BLKID_SUBLKS_TYPE | BLKID_SUBLKS_USAGE |
			BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID);

	blkid_probe_enable_partitions(pr, 1);
	blkid_probe_set_partitions_flags(pr, BLKID_PARTS_MAGIC);

	return pr;
error:
	err(EXIT_FAILURE, _("error: %s: probing initialization failed"), devname);
	return NULL;
}

static struct wipe_desc *
read_offsets(struct wipe_desc *wp, const char *devname)
{
	blkid_probe pr = new_probe(devname, 0);

	if (!pr)
		return NULL;

	while (blkid_do_probe(pr) == 0) {
		wp = get_desc_for_probe(wp, pr);
		if (!wp)
			break;
	}

	blkid_free_probe(pr);
	return wp;
}

static struct wipe_desc *
do_wipe(struct wipe_desc *wp, const char *devname, int noact, int all)
{
	blkid_probe pr = new_probe(devname, O_RDWR);
	struct wipe_desc *w;

	if (!pr)
		return NULL;

	while (blkid_do_probe(pr) == 0) {
		w = get_desc_for_probe(wp, pr);
		if (!w)
			break;
		wp = w;
		if (!wp->on_disk)
			continue;
		wp->zap = all ? 1 : wp->zap;
		if (!wp->zap)
			continue;

		if (blkid_do_wipe(pr, noact))
			warn(_("failed to erase %s magic string at offset 0x%08jx"),
			     wp->type, wp->offset);
		else {
			size_t i;

			printf(_("%zd bytes were erased at offset 0x%08jx (%s): "),
				wp->len, wp->offset, wp->type);

			for (i = 0; i < wp->len; i++) {
				printf("%02x", wp->magic[i]);
				if (i + 1 < wp->len)
					fputc(' ', stdout);
			}
			putchar('\n');
		}
	}

	for (w = wp; w != NULL; w = w->next) {
		if (!w->on_disk)
			warnx(_("offset 0x%jx not found"), w->offset);
	}

	fsync(blkid_probe_get_fd(pr));
	close(blkid_probe_get_fd(pr));
	blkid_free_probe(pr);

	return wp;
}

static void
free_wipe(struct wipe_desc *wp)
{
	while (wp) {
		struct wipe_desc *next = wp->next;

		free(wp->usage);
		free(wp->type);
		free(wp->magic);
		free(wp->label);
		free(wp->uuid);
		free(wp);

		wp = next;
	}
}

static loff_t
strtoll_offset(const char *str)
{
	uintmax_t sz;

	if (strtosize(str, &sz))
		errx(EXIT_FAILURE, _("invalid offset value '%s' specified"), str);
	return sz;
}


static void __attribute__((__noreturn__))
usage(FILE *out)
{
	fputs(_("\nUsage:\n"), out);
	fprintf(out,
	      _(" %s [options] <device>\n"), program_invocation_short_name);

	fputs(_("\nOptions:\n"), out);
	fputs(_(" -a, --all           wipe all magic strings (BE CAREFUL!)\n"
		" -h, --help          show this help text\n"
		" -n, --no-act        do everything except the actual write() call\n"
		" -o, --offset <num>  offset to erase, in bytes\n"
		" -p, --parsable      print out in parsable instead of printable format\n"
		" -V, --version       output version information and exit\n"), out);

	fprintf(out, _("\nFor more information see wipefs(8).\n"));

	exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}


int
main(int argc, char **argv)
{
	struct wipe_desc *wp = NULL;
	int c, all = 0, has_offset = 0, noact = 0, mode = 0;
	const char *devname;

	static const struct option longopts[] = {
	    { "all",       0, 0, 'a' },
	    { "help",      0, 0, 'h' },
	    { "no-act",    0, 0, 'n' },
	    { "offset",    1, 0, 'o' },
	    { "parsable",  0, 0, 'p' },
	    { "version",   0, 0, 'V' },
	    { NULL,        0, 0, 0 }
	};

	setlocale(LC_ALL, "");
	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);

	while ((c = getopt_long(argc, argv, "ahno:pV", longopts, NULL)) != -1) {
		switch(c) {
		case 'a':
			all++;
			break;
		case 'h':
			usage(stdout);
			break;
		case 'n':
			noact++;
			break;
		case 'o':
			wp = add_offset(wp, strtoll_offset(optarg), 1);
			has_offset++;
			break;
		case 'p':
			mode = WP_MODE_PARSABLE;
			break;
		case 'V':
			printf(_("%s from %s\n"), program_invocation_short_name,
				PACKAGE_STRING);
			return EXIT_SUCCESS;
		default:
			usage(stderr);
			break;
		}
	}

	if (wp && all)
		errx(EXIT_FAILURE, _("--offset and --all are mutually exclusive"));
	if (optind == argc)
		usage(stderr);

	devname = argv[optind++];

	if (optind != argc)
		errx(EXIT_FAILURE, _("only one device as argument is currently supported."));

	if (!all && !has_offset) {
		/*
		 * Print only
		 */
		wp = read_offsets(wp, devname);
		if (wp)
			print_all(wp, mode);
	} else {
		/*
		 * Erase
		 */
		wp = do_wipe(wp, devname, noact, all);
	}

	free_wipe(wp);
	return EXIT_SUCCESS;
}
Commit	Line	Data
c49057d2	1	/*
870768ad	2	* wipefs - utility to wipe filesystems from device
c49057d2 KZ	3	*
	4	* Copyright (C) 2009 Red Hat, Inc. All rights reserved.
	5	* Written by Karel Zak <kzak@redhat.com>
	6	*
bfbe2933 KZ	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
c49057d2 KZ	11	*
	12	* This program is distributed in the hope that it would be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software Foundation,
	19	* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*/
	21	#include <sys/stat.h>
	22	#include <sys/types.h>
	23	#include <ctype.h>
	24	#include <errno.h>
	25	#include <fcntl.h>
	26	#include <stdio.h>
	27	#include <stdlib.h>
	28	#include <unistd.h>
	29	#include <getopt.h>
c49057d2 KZ	30	#include <string.h>
	31	#include <limits.h>
	32
	33	#include <blkid.h>
	34
	35	#include "nls.h"
87f3feac	36	#include "xalloc.h"
8abcf290	37	#include "strutils.h"
0239ac01	38	#include "writeall.h"
eb76ca98	39	#include "c.h"
c49057d2 KZ	40
	41	struct wipe_desc {
	42	loff_t offset; /* magic string offset */
	43	size_t len; /* length of magic string */
	44	unsigned char magic; / magic string */
	45
	46	int zap; /* zap this offset? */
	47	char usage; / raid, filesystem, ... */
	48	char type; / FS type */
	49	char label; / FS label */
	50	char uuid; / FS uuid */
	51
6611a3dd KZ	52	int on_disk;
6611a3dd KZ	53
c49057d2 KZ	54	struct wipe_desc *next;
	55	};
	56
	57	#define WP_MODE_PRETTY 0 /* default */
	58	#define WP_MODE_PARSABLE 1
	59
	60	static void
	61	print_pretty(struct wipe_desc *wp, int line)
	62	{
	63	if (!line) {
	64	printf("offset type\n");
	65	printf("----------------------------------------------------------------\n");
	66	}
	67
	68	printf("0x%-17jx %s [%s]", wp->offset, wp->type, wp->usage);
	69
	70	if (wp->label && *wp->label)
	71	printf("\n%27s %s", "LABEL:", wp->label);
	72	if (wp->uuid)
	73	printf("\n%27s %s", "UUID: ", wp->uuid);
	74	puts("\n");
	75	}
	76
	77	static void
	78	print_parsable(struct wipe_desc *wp, int line)
	79	{
	80	char enc[256];
	81
	82	if (!line)
	83	printf("# offset,uuid,label,type\n");
	84
	85	printf("0x%jx,", wp->offset);
	86
	87	if (wp->uuid) {
	88	blkid_encode_string(wp->uuid, enc, sizeof(enc));
	89	printf("%s,", enc);
	90	} else
	91	fputc(',', stdout);
	92
	93	if (wp->label) {
	94	blkid_encode_string(wp->label, enc, sizeof(enc));
	95	printf("%s,", enc);
	96	} else
	97	fputc(',', stdout);
	98
	99	blkid_encode_string(wp->type, enc, sizeof(enc));
	100	printf("%s\n", enc);
	101	}
	102
	103	static void
	104	print_all(struct wipe_desc *wp, int mode)
	105	{
	106	int n = 0;
	107
	108	while (wp) {
	109	switch (mode) {
	110	case WP_MODE_PRETTY:
	111	print_pretty(wp, n++);
	112	break;
	113	case WP_MODE_PARSABLE:
	114	print_parsable(wp, n++);
	115	break;
	116	}
	117	wp = wp->next;
118	}
119	}
120
121	static struct wipe_desc *
122	add_offset(struct wipe_desc *wp0, loff_t offset, int zap)
123	{
124	struct wipe_desc *wp = wp0;
125
126	while (wp) {
127	if (wp->offset == offset)
128	return wp;
129	wp = wp->next;
130	}
131
132	wp = calloc(1, sizeof(struct wipe_desc));
133	if (!wp)
134	err(EXIT_FAILURE, _("calloc failed"));
135
136	wp->offset = offset;
137	wp->next = wp0;
138	wp->zap = zap;
139	return wp;
140	}
141
c49057d2	142	static struct wipe_desc *
6611a3dd	143	get_desc_for_probe(struct wipe_desc *wp, blkid_probe pr)
c49057d2	144	{
44765fdd	145	const char off, type, mag, p, *usage = NULL;
c49057d2	146	size_t len;
44765fdd KZ	147	loff_t offset;
44765fdd KZ	148	int rc;
c49057d2	149
44765fdd KZ	150	/* superblocks */
	151	if (blkid_probe_lookup_value(pr, "TYPE", &type, NULL) == 0) {
	152	rc = blkid_probe_lookup_value(pr, "SBMAGIC_OFFSET", &off, NULL);
	153	if (!rc)
	154	rc = blkid_probe_lookup_value(pr, "SBMAGIC", &mag, &len);
	155	if (rc)
	156	return wp;
c49057d2	157
44765fdd KZ	158	/* partitions */
	159	} else if (blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL) == 0) {
	160	rc = blkid_probe_lookup_value(pr, "PTMAGIC_OFFSET", &off, NULL);
	161	if (!rc)
	162	rc = blkid_probe_lookup_value(pr, "PTMAGIC", &mag, &len);
	163	if (rc)
	164	return wp;
	165	usage = "partition table";
	166	} else
	167	return wp;
c49057d2	168
44765fdd	169	offset = strtoll(off, NULL, 10);
c49057d2	170
44765fdd KZ	171	wp = add_offset(wp, offset, 0);
	172	if (!wp)
	173	return NULL;
	174
	175	if (usage \|\| blkid_probe_lookup_value(pr, "USAGE", &usage, NULL) == 0)
c49057d2	176	wp->usage = xstrdup(usage);
c49057d2	177
44765fdd KZ	178	wp->type = xstrdup(type);
44765fdd KZ	179	wp->on_disk = 1;
c49057d2	180
44765fdd KZ	181	wp->magic = xmalloc(len);
	182	memcpy(wp->magic, mag, len);
	183	wp->len = len;
c49057d2	184
44765fdd KZ	185	if (blkid_probe_lookup_value(pr, "LABEL", &p, NULL) == 0)
	186	wp->label = xstrdup(p);
	187
	188	if (blkid_probe_lookup_value(pr, "UUID", &p, NULL) == 0)
	189	wp->uuid = xstrdup(p);
c49057d2 KZ	190
	191	return wp;
	192	}
	193
6611a3dd KZ	194	static blkid_probe
6611a3dd KZ	195	new_probe(const char *devname, int mode)
c49057d2 KZ	196	{
	197	blkid_probe pr;
	198
6611a3dd	199	if (!devname)
c49057d2 KZ	200	return NULL;
c49057d2 KZ	201
6611a3dd KZ	202	if (mode) {
	203	int fd = open(devname, mode);
	204	if (fd < 0)
	205	goto error;
	206
	207	pr = blkid_new_probe();
	208	if (pr && blkid_probe_set_device(pr, fd, 0, 0))
	209	goto error;
	210	} else
	211	pr = blkid_new_probe_from_filename(devname);
	212
c49057d2	213	if (!pr)
6611a3dd	214	goto error;
269c1a2a	215
c49057d2 KZ	216	blkid_probe_enable_superblocks(pr, 1);
	217	blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC \|
	218	BLKID_SUBLKS_TYPE \| BLKID_SUBLKS_USAGE \|
	219	BLKID_SUBLKS_LABEL \| BLKID_SUBLKS_UUID);
	220
44765fdd KZ	221	blkid_probe_enable_partitions(pr, 1);
	222	blkid_probe_set_partitions_flags(pr, BLKID_PARTS_MAGIC);
	223
6611a3dd KZ	224	return pr;
	225	error:
	226	err(EXIT_FAILURE, _("error: %s: probing initialization failed"), devname);
	227	return NULL;
	228	}
	229
	230	static struct wipe_desc *
	231	read_offsets(struct wipe_desc wp, const char devname)
	232	{
	233	blkid_probe pr = new_probe(devname, 0);
	234
	235	if (!pr)
	236	return NULL;
	237
c49057d2	238	while (blkid_do_probe(pr) == 0) {
6611a3dd	239	wp = get_desc_for_probe(wp, pr);
c49057d2 KZ	240	if (!wp)
	241	break;
	242	}
	243
	244	blkid_free_probe(pr);
	245	return wp;
	246	}
	247
6611a3dd KZ	248	static struct wipe_desc *
6611a3dd KZ	249	do_wipe(struct wipe_desc wp, const char devname, int noact, int all)
c49057d2	250	{
6611a3dd KZ	251	blkid_probe pr = new_probe(devname, O_RDWR);
6611a3dd KZ	252	struct wipe_desc *w;
c49057d2	253
6611a3dd KZ	254	if (!pr)
6611a3dd KZ	255	return NULL;
c49057d2	256
6611a3dd KZ	257	while (blkid_do_probe(pr) == 0) {
	258	w = get_desc_for_probe(wp, pr);
	259	if (!w)
	260	break;
	261	wp = w;
	262	if (!wp->on_disk)
	263	continue;
	264	wp->zap = all ? 1 : wp->zap;
	265	if (!wp->zap)
	266	continue;
	267
	268	if (blkid_do_wipe(pr, noact))
	269	warn(_("failed to erase %s magic string at offset 0x%08jx"),
	270	wp->type, wp->offset);
	271	else {
	272	size_t i;
	273
	274	printf(_("%zd bytes were erased at offset 0x%08jx (%s): "),
	275	wp->len, wp->offset, wp->type);
	276
	277	for (i = 0; i < wp->len; i++) {
	278	printf("%02x", wp->magic[i]);
	279	if (i + 1 < wp->len)
	280	fputc(' ', stdout);
	281	}
	282	putchar('\n');
	283	}
c49057d2 KZ	284	}
c49057d2 KZ	285
6611a3dd KZ	286	for (w = wp; w != NULL; w = w->next) {
	287	if (!w->on_disk)
	288	warnx(_("offset 0x%jx not found"), w->offset);
c49057d2 KZ	289	}
c49057d2 KZ	290
6611a3dd KZ	291	fsync(blkid_probe_get_fd(pr));
	292	close(blkid_probe_get_fd(pr));
	293	blkid_free_probe(pr);
	294
	295	return wp;
c49057d2 KZ	296	}
c49057d2 KZ	297
770af396 KZ	298	static void
	299	free_wipe(struct wipe_desc *wp)
	300	{
	301	while (wp) {
	302	struct wipe_desc *next = wp->next;
	303
	304	free(wp->usage);
	305	free(wp->type);
	306	free(wp->magic);
	307	free(wp->label);
	308	free(wp->uuid);
	309	free(wp);
	310
	311	wp = next;
	312	}
	313	}
	314
c49057d2 KZ	315	static loff_t
	316	strtoll_offset(const char *str)
	317	{
69cc2ec0	318	uintmax_t sz;
c49057d2	319
69cc2ec0	320	if (strtosize(str, &sz))
d0bb6987	321	errx(EXIT_FAILURE, _("invalid offset value '%s' specified"), str);
69cc2ec0	322	return sz;
c49057d2 KZ	323	}
c49057d2 KZ	324
69cc2ec0	325
c49057d2 KZ	326	static void __attribute__((__noreturn__))
	327	usage(FILE *out)
	328	{
dcd16b0f KZ	329	fputs(_("\nUsage:\n"), out);
	330	fprintf(out,
	331	_(" %s [options] <device>\n"), program_invocation_short_name);
	332
	333	fputs(_("\nOptions:\n"), out);
	334	fputs(_(" -a, --all wipe all magic strings (BE CAREFUL!)\n"
	335	" -h, --help show this help text\n"
	336	" -n, --no-act do everything except the actual write() call\n"
	337	" -o, --offset <num> offset to erase, in bytes\n"
	338	" -p, --parsable print out in parsable instead of printable format\n"
	339	" -V, --version output version information and exit\n"), out);
c49057d2	340
04c94441	341	fprintf(out, _("\nFor more information see wipefs(8).\n"));
c49057d2 KZ	342
	343	exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
	344	}
	345
	346
	347	int
	348	main(int argc, char **argv)
	349	{
	350	struct wipe_desc *wp = NULL;
	351	int c, all = 0, has_offset = 0, noact = 0, mode = 0;
6611a3dd	352	const char *devname;
c49057d2	353
6c7d5ae9	354	static const struct option longopts[] = {
c49057d2 KZ	355	{ "all", 0, 0, 'a' },
	356	{ "help", 0, 0, 'h' },
	357	{ "no-act", 0, 0, 'n' },
	358	{ "offset", 1, 0, 'o' },
	359	{ "parsable", 0, 0, 'p' },
11295cd1	360	{ "version", 0, 0, 'V' },
c49057d2 KZ	361	{ NULL, 0, 0, 0 }
	362	};
	363
	364	setlocale(LC_ALL, "");
	365	bindtextdomain(PACKAGE, LOCALEDIR);
	366	textdomain(PACKAGE);
	367
11295cd1	368	while ((c = getopt_long(argc, argv, "ahno:pV", longopts, NULL)) != -1) {
c49057d2 KZ	369	switch(c) {
	370	case 'a':
	371	all++;
	372	break;
	373	case 'h':
	374	usage(stdout);
	375	break;
	376	case 'n':
	377	noact++;
	378	break;
	379	case 'o':
	380	wp = add_offset(wp, strtoll_offset(optarg), 1);
	381	has_offset++;
	382	break;
	383	case 'p':
	384	mode = WP_MODE_PARSABLE;
	385	break;
11295cd1	386	case 'V':
09467812 SK	387	printf(_("%s from %s\n"), program_invocation_short_name,
	388	PACKAGE_STRING);
	389	return EXIT_SUCCESS;
c49057d2 KZ	390	default:
	391	usage(stderr);
	392	break;
	393	}
	394	}
	395
	396	if (wp && all)
	397	errx(EXIT_FAILURE, _("--offset and --all are mutually exclusive"));
	398	if (optind == argc)
	399	usage(stderr);
	400
6611a3dd	401	devname = argv[optind++];
c49057d2	402
6ebe8f63 MB	403	if (optind != argc)
	404	errx(EXIT_FAILURE, _("only one device as argument is currently supported."));
	405
6611a3dd KZ	406	if (!all && !has_offset) {
	407	/*
	408	* Print only
	409	*/
	410	wp = read_offsets(wp, devname);
	411	if (wp)
c49057d2	412	print_all(wp, mode);
6611a3dd KZ	413	} else {
	414	/*
	415	* Erase
	416	*/
	417	wp = do_wipe(wp, devname, noact, all);
c49057d2	418	}
6611a3dd KZ	419
6611a3dd KZ	420	free_wipe(wp);
c49057d2 KZ	421	return EXIT_SUCCESS;
c49057d2 KZ	422	}