summaryrefslogtreecommitdiffstats
path: root/disk-utils/fdformat.c
blob: c10776f76eac785cf43bd0e2025a1a01a7ceb90b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
/*
 * fdformat.c  -  Low-level formats a floppy disk - Werner Almesberger
 */
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <linux/fd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <unistd.h>

#include "c.h"
#include "blkdev.h"
#include "strutils.h"
#include "closestream.h"
#include "nls.h"
#include "xalloc.h"

#define SECTOR_SIZE 512

static struct floppy_struct param;


static void format_begin(int ctrl)
{
	if (ioctl(ctrl, FDFMTBEG, NULL) < 0)
		err(EXIT_FAILURE, "ioctl: FDFMTBEG");
}

static void format_end(int ctrl)
{
	if (ioctl(ctrl, FDFMTEND, NULL) < 0)
		err(EXIT_FAILURE, "ioctl: FDFMTEND");
}

static void format_track_head(int ctrl, struct format_descr *descr)
{
	if (ioctl(ctrl, FDFMTTRK, (long) descr) < 0)
		err(EXIT_FAILURE, "ioctl: FDFMTTRK");
}

static void seek_track_head(int ctrl, struct format_descr *descr)
{
	lseek(ctrl, (descr->track * param.head + descr->head) * param.sect * SECTOR_SIZE, SEEK_SET);
}

static void format_disk(int ctrl, unsigned int track_from, unsigned int track_to)
{
	struct format_descr current;

	printf(_("Formatting ... "));
	fflush(stdout);

	format_begin(ctrl);

	for (current.track = track_from; current.track <= track_to; current.track++) {
		for (current.head = 0; current.head < param.head; current.head++) {
			printf("%3u/%u\b\b\b\b\b", current.track, current.head);
			fflush(stdout);
			format_track_head(ctrl, &current);
		}
	}

	format_end(ctrl);

	printf("     \b\b\b\b\b%s", _("done\n"));
}

static void verify_disk(int ctrl, unsigned int track_from, unsigned int track_to, unsigned int repair)
{
	unsigned char *data;
	struct format_descr current;
	int track_size, count;
	unsigned int retries_left;

	track_size = param.sect * SECTOR_SIZE;
	data = xmalloc(track_size);
	printf(_("Verifying ... "));
	fflush(stdout);

	current.track = track_from;
	current.head = 0;
	seek_track_head (ctrl, &current);

	for (current.track = track_from; current.track <= track_to; current.track++) {
		for (current.head = 0; current.head < param.head; current.head++) {
			int read_bytes;

			printf("%3u\b\b\b", current.track);
			fflush(stdout);

			retries_left = repair;
			do {
				read_bytes = read(ctrl, data, track_size);
				if (read_bytes != track_size) {
					if (retries_left) {
						format_begin(ctrl);
						format_track_head(ctrl, &current);
						format_end(ctrl);
						seek_track_head (ctrl, &current);
						retries_left--;
						if (retries_left)
							continue;
					}
					if (read_bytes < 0)
						perror(_("Read: "));
					fprintf(stderr,
						_("Problem reading track/head %u/%u,"
						  " expected %d, read %d\n"),
						current.track, current.head, track_size, read_bytes);
					free(data);
					exit(EXIT_FAILURE);
				}
				for (count = 0; count < track_size; count++)
					if (data[count] != FD_FILL_BYTE) {
						if (retries_left) {
							format_begin(ctrl);
							format_track_head(ctrl, &current);
							format_end(ctrl);
							seek_track_head (ctrl, &current);
							retries_left--;
							if (retries_left)
								continue;
						}
						printf(_("bad data in track/head %u/%u\n"
							 "Continuing ... "), current.track, current.head);
						fflush(stdout);
						break;
					}
				break;
			} while (retries_left);
		}
	}

	free(data);
	printf(_("done\n"));
}

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

	fputs(USAGE_SEPARATOR, out);
	fputs(_("Do a low-level formatting of a floppy disk.\n"), out);

	fputs(USAGE_OPTIONS, out);
	fputs(_(" -f, --from <N>    start at the track N (default 0)\n"), out);
	fputs(_(" -t, --to <N>      stop at the track N\n"), out);
	fputs(_(" -r, --repair <N>  try to repair tracks failed during\n"
                "                     the verification (max N retries)\n"), out);
	fputs(_(" -n, --no-verify   disable the verification after the format\n"), out);

	fputs(USAGE_SEPARATOR, out);
	printf(USAGE_HELP_OPTIONS(19));
	printf(USAGE_MAN_TAIL("fdformat(8)"));

	exit(EXIT_SUCCESS);
}

int main(int argc, char **argv)
{
	int ch;
	int ctrl;
	int verify = 1;
	unsigned int repair = 0;
	unsigned int track_from = 0;
	unsigned int track_to = 0;
	int has_user_defined_track_to = 0;
	struct stat st;

	static const struct option longopts[] = {
		{"from", required_argument, NULL, 'f'},
		{"to", required_argument, NULL, 't'},
		{"repair", required_argument, NULL, 'r'},
		{"no-verify", no_argument, NULL, 'n'},
		{"version", no_argument, NULL, 'V'},
		{"help", no_argument, NULL, 'h'},
		{NULL, 0, NULL, 0}
	};

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

	while ((ch = getopt_long(argc, argv, "f:t:r:nVh", longopts, NULL)) != -1)
		switch (ch) {
		case 'f':
			track_from = strtou32_or_err(optarg, _("invalid argument - from"));
			break;
		case 't':
			has_user_defined_track_to = 1;
			track_to = strtou32_or_err(optarg, _("invalid argument - to"));
			break;
		case 'r':
			repair = strtou32_or_err(optarg, _("invalid argument - repair"));
			break;
		case 'n':
			verify = 0;
			break;
		case 'V':
			print_version(EXIT_SUCCESS);
		case 'h':
			usage();
		default:
			errtryhelp(EXIT_FAILURE);
		}

	argc -= optind;
	argv += optind;

	if (argc < 1) {
		warnx(_("no device specified"));
		errtryhelp(EXIT_FAILURE);
	}
	if (stat(argv[0], &st) < 0)
		err(EXIT_FAILURE, _("stat of %s failed"), argv[0]);
	if (!S_ISBLK(st.st_mode))
		/* do not test major - perhaps this was an USB floppy */
		errx(EXIT_FAILURE, _("%s: not a block device"), argv[0]);
	ctrl = open_blkdev_or_file(&st, argv[0], O_RDWR);
	if (ctrl < 0)
		err(EXIT_FAILURE, _("cannot open %s"), argv[0]);
	if (ioctl(ctrl, FDGETPRM, (long) &param) < 0)
		err(EXIT_FAILURE, _("could not determine current format type"));

	printf(_("%s-sided, %d tracks, %d sec/track. Total capacity %d kB.\n"),
		(param.head == 2) ? _("Double") : _("Single"),
		param.track, param.sect, param.size >> 1);

	if (!has_user_defined_track_to)
		track_to = param.track - 1;

	if (track_from >= param.track)
		err(EXIT_FAILURE, _("user defined start track exceeds the medium specific maximum"));
	if (track_to >= param.track)
		err(EXIT_FAILURE, _("user defined end track exceeds the medium specific maximum"));
	if (track_from > track_to)
		err(EXIT_FAILURE, _("user defined start track exceeds the user defined end track"));

	format_disk(ctrl, track_from, track_to);

	if (verify)
		verify_disk(ctrl, track_from, track_to, repair);

	if (close_fd(ctrl) != 0)
		err(EXIT_FAILURE, _("close failed"));

	return EXIT_SUCCESS;
}