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
|
/* setfdprm.c - Sets user-provided floppy disk parameters, re-activates
autodetection and switches diagnostic messages. */
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/fd.h>
#define FDPRMFILE "/etc/fdprm"
#define MAXLINE 200
static int convert(char *arg)
{
long result;
char *end;
result = strtol(arg,&end,0);
if (!*end) return (int) result;
fprintf(stderr,"Invalid number: %s\n",arg);
exit(1);
}
static void cmd_without_param(int cmd,int fd)
{
if (ioctl(fd,cmd,NULL) >= 0) exit(0);
perror("ioctl");
exit(1);
}
static void set_params(int cmd,int fd,char **params)
{
struct floppy_struct ft;
ft.size = convert(params[0]);
ft.sect = convert(params[1]);
ft.head = convert(params[2]);
ft.track = convert(params[3]);
ft.stretch = convert(params[4]);
ft.gap = convert(params[5]);
ft.rate = convert(params[6]);
ft.spec1 = convert(params[7]);
ft.fmt_gap = convert(params[8]);
ft.name = NULL;
if (ioctl(fd,cmd,&ft) >= 0) exit(0);
perror("ioctl");
exit(1);
}
static void find_params(int cmd,int fd,char *name)
{
FILE *file;
char line[MAXLINE+2],this[MAXLINE+2],param[9][MAXLINE+2];
char *params[9],*start;
int count;
if ((file = fopen(FDPRMFILE,"r")) == NULL) {
perror(FDPRMFILE);
exit(1);
}
while (fgets(line,MAXLINE,file)) {
for (start = line; *start == ' ' || *start == '\t'; start++);
if (*start && *start != '\n' && *start != '#') {
if (sscanf(start,"%s %s %s %s %s %s %s %s %s %s",this,param[0],
param[1],param[2],param[3],param[4],param[5],param[6],param[7],
param[8]) != 10) {
fprintf(stderr,"Syntax error: '%s'\n",line);
exit(1);
}
if (!strcmp(this,name)) {
for (count = 0; count < 9; count++)
params[count] = param[count];
set_params(cmd,fd,params);
}
}
}
fprintf(stderr,"No such parameter set: '%s'\n",name);
exit(1);
}
static void usage(char *name)
{
char *this;
if (this = strrchr(name,'/')) name = this+1;
fprintf(stderr,"usage: %s [ -p ] dev name\n",name);
fprintf(stderr," %s [ -p ] dev size sect heads tracks stretch \
gap rate spec1 fmt_gap\n",name);
#ifdef FDMEDCNG
fprintf(stderr," %s [ -c | -y | -n | -d ] dev\n",name);
#else
fprintf(stderr," %s [ -c | -y | -n ] dev\n",name);
#endif
exit(1);
}
main(int argc,char **argv)
{
int cmd,fd;
char *name;
name = argv[0];
if (argc < 3) usage(name);
cmd = FDSETPRM;
if (*argv[1] == '-') {
switch (argv[1][1]) {
case 'c':
cmd = FDCLRPRM;
break;
case 'p':
cmd = FDDEFPRM;
break;
case 'y':
cmd = FDMSGON;
break;
case 'n':
cmd = FDMSGOFF;
break;
#ifdef FDMEDCNG
case 'd':
cmd = FDMEDCNG;
break;
#endif
default:
usage(name);
}
argc--;
argv++;
}
if ((fd = open(argv[1],3)) < 0) { /* 3 == no access at all */
perror(argv[1]);
exit(1);
}
if (cmd != FDSETPRM && cmd != FDDEFPRM) {
if (argc != 2) usage(name);
cmd_without_param(cmd,fd);
}
if (argc != 11 && argc != 3) usage(name);
if (argc == 11) set_params(cmd,fd,&argv[2]);
else find_params(cmd,fd,argv[2]);
}
|
