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
|
/* fdformat.c - Low-level formats a floppy disk - Werner Almesberger */
/* 1999-02-22 Arkadiusz Mikiewicz <misiek@pld.ORG.PL>
* - added Native Language Support
* 1999-03-20 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* - more i18n/nls translatable strings marked
*
* 5 July 2003 -- modified for Busybox by Erik Andersen
*/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include "busybox.h"
/* Stuff extracted from linux/fd.h */
struct floppy_struct {
unsigned int size, /* nr of sectors total */
sect, /* sectors per track */
head, /* nr of heads */
track, /* nr of tracks */
stretch; /* !=0 means double track steps */
#define FD_STRETCH 1
#define FD_SWAPSIDES 2
unsigned char gap, /* gap1 size */
rate, /* data rate. |= 0x40 for perpendicular */
#define FD_2M 0x4
#define FD_SIZECODEMASK 0x38
#define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
#define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
512 : 128 << FD_SIZECODE(floppy) )
#define FD_PERP 0x40
spec1, /* stepping rate, head unload time */
fmt_gap; /* gap2 size */
const char * name; /* used only for predefined formats */
};
struct format_descr {
unsigned int device,head,track;
};
#define FDFMTBEG _IO(2,0x47)
#define FDFMTTRK _IOW(2,0x48, struct format_descr)
#define FDFMTEND _IO(2,0x49)
#define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
#define FD_FILL_BYTE 0xF6 /* format fill byte. */
static void print_and_flush(const char * __restrict format, ...)
{
va_list arg;
va_start(arg, format);
bb_vfprintf(stdout, format, arg);
va_end(arg);
bb_xfflush_stdout();
}
static void bb_xioctl(int fd, int request, void *argp, const char *string)
{
if (ioctl (fd, request, argp) < 0) {
bb_perror_msg_and_die(string);
}
}
int fdformat_main(int argc,char **argv)
{
int fd, n, cyl, read_bytes, verify;
unsigned char *data;
struct stat st;
struct floppy_struct param;
struct format_descr descr;
if (argc < 2) {
bb_show_usage();
}
verify = !bb_getopt_ulflags(argc, argv, "n");
argv += optind;
/* R_OK is needed for verifying */
if (stat(*argv,&st) < 0 || access(*argv,W_OK | R_OK ) < 0) {
bb_perror_msg_and_die(*argv);
}
if (!S_ISBLK(st.st_mode)) {
bb_error_msg_and_die("%s: not a block device",*argv);
/* do not test major - perhaps this was an USB floppy */
}
/* O_RDWR for formatting and verifying */
fd = bb_xopen(*argv,O_RDWR );
bb_xioctl(fd, FDGETPRM, ¶m, "FDGETPRM");/*original message was: "Could not determine current format type" */
print_and_flush("%s-sided, %d tracks, %d sec/track. Total capacity %d kB.\n",
(param.head == 2) ? "Double" : "Single",
param.track, param.sect, param.size >> 1);
/* FORMAT */
print_and_flush("Formatting ... ", NULL);
bb_xioctl(fd, FDFMTBEG,NULL,"FDFMTBEG");
/* n == track */
for (n = 0; n < param.track; n++)
{
descr.head = 0;
descr.track = n;
bb_xioctl(fd, FDFMTTRK,&descr,"FDFMTTRK");
print_and_flush("%3d\b\b\b", n);
if (param.head == 2) {
descr.head = 1;
bb_xioctl(fd, FDFMTTRK,&descr,"FDFMTTRK");
}
}
bb_xioctl(fd,FDFMTEND,NULL,"FDFMTEND");
print_and_flush("done\n", NULL);
/* VERIFY */
if(verify) {
/* n == cyl_size */
n = param.sect*param.head*512;
data = xmalloc(n);
print_and_flush("Verifying ... ", NULL);
for (cyl = 0; cyl < param.track; cyl++) {
print_and_flush("%3d\b\b\b", cyl);
if((read_bytes = safe_read(fd,data,n))!= n ) {
if(read_bytes < 0) {
bb_perror_msg("Read: ");
}
bb_error_msg_and_die("Problem reading cylinder %d, expected %d, read %d", cyl, n, read_bytes);
}
/* Check backwards so we don't need a counter */
while(--read_bytes>=0) {
if( data[read_bytes] != FD_FILL_BYTE) {
print_and_flush("bad data in cyl %d\nContinuing ... ",cyl);
}
}
}
/* There is no point in freeing blocks at the end of a program, because
all of the program's space is given back to the system when the process
terminates.*/
#ifdef CONFIG_FEATURE_CLEAN_UP
free(data);
#endif
print_and_flush("done\n", NULL);
}
#ifdef CONFIG_FEATURE_CLEAN_UP
close(fd);
#endif
/* Don't bother closing. Exit does
* that, so we can save a few bytes */
return EXIT_SUCCESS;
}
|
