1 /*-
2 * SPDX-License-Identifier: Beerware
3 *
4 * ----------------------------------------------------------------------------
5 * "THE BEER-WARE LICENSE" (Revision 42):
6 * <[email protected]> wrote this file. As long as you retain this notice you
7 * can do whatever you want with this stuff. If we meet some day, and you think
8 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
9 * ----------------------------------------------------------------------------
10 *
11 */
12
13 #include <ctype.h>
14 #include <err.h>
15 #include <fcntl.h>
16 #include <paths.h>
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <unistd.h>
21
22 #include <sys/fdcio.h>
23
24 static int
format_track(int fd,int cyl,int secs,int head,int rate,int gaplen,int secsize,int fill,int interleave)25 format_track(int fd, int cyl, int secs, int head, int rate,
26 int gaplen, int secsize, int fill, int interleave)
27 {
28 struct fd_formb f;
29 register int i,j;
30 int il[100];
31
32 memset(il,0,sizeof il);
33 for(j = 0, i = 1; i <= secs; i++) {
34 while(il[(j%secs)+1]) j++;
35 il[(j%secs)+1] = i;
36 j += interleave;
37 }
38
39 f.format_version = FD_FORMAT_VERSION;
40 f.head = head;
41 f.cyl = cyl;
42 f.transfer_rate = rate;
43
44 f.fd_formb_secshift = secsize;
45 f.fd_formb_nsecs = secs;
46 f.fd_formb_gaplen = gaplen;
47 f.fd_formb_fillbyte = fill;
48 for(i = 0; i < secs; i++) {
49 f.fd_formb_cylno(i) = cyl;
50 f.fd_formb_headno(i) = head;
51 f.fd_formb_secno(i) = il[i+1];
52 f.fd_formb_secsize(i) = secsize;
53 }
54 return ioctl(fd, FD_FORM, (caddr_t)&f);
55 }
56
57 static void
usage(void)58 usage(void)
59 {
60 fprintf(stderr, "usage: fdwrite [-v] [-y] [-f inputfile] [-d device]\n");
61 exit(2);
62 }
63
64 int
main(int argc,char ** argv)65 main(int argc, char **argv)
66 {
67 int inputfd = -1, c, fdn = 0, i,j,fd;
68 int bpt, verbose=1, nbytes=0, track;
69 int interactive = 1;
70 const char *device= "/dev/fd0";
71 char *trackbuf = 0,*vrfybuf = 0;
72 struct fd_type fdt;
73 FILE *tty;
74
75 setbuf(stdout,0);
76 while((c = getopt(argc, argv, "d:f:vy")) != -1)
77 switch(c) {
78 case 'd': /* Which drive */
79 device = optarg;
80 break;
81
82 case 'f': /* input file */
83 if (inputfd >= 0)
84 close(inputfd);
85 inputfd = open(optarg,O_RDONLY);
86 if (inputfd < 0)
87 err(1, "%s", optarg);
88 break;
89
90 case 'v': /* Toggle verbosity */
91 verbose = !verbose;
92 break;
93
94 case 'y': /* Don't confirm? */
95 interactive = 0;
96 break;
97
98 case '?': default:
99 usage();
100 }
101
102 if (inputfd < 0)
103 inputfd = 0;
104
105 if (!isatty(1))
106 interactive = 0;
107
108 if(optind < argc)
109 usage();
110
111 tty = fopen(_PATH_TTY,"r+");
112 if(!tty)
113 err(1, _PATH_TTY);
114 setbuf(tty,0);
115
116 for(j=1;j > 0;) {
117 fdn++;
118 if (interactive) {
119 fprintf(tty,
120 "Please insert floppy #%d in drive %s and press return >",
121 fdn,device);
122 while(1) {
123 i = getc(tty);
124 if(i == '\n') break;
125 }
126 }
127
128 if((fd = open(device, O_RDWR)) < 0)
129 err(1, "%s", device);
130
131 if(ioctl(fd, FD_GTYPE, &fdt) < 0)
132 errx(1, "not a floppy disk: %s", device);
133
134 bpt = fdt.sectrac * (1<<fdt.secsize) * 128;
135 if(!trackbuf) {
136 trackbuf = malloc(bpt);
137 if(!trackbuf) errx(1, "malloc");
138 }
139 if(!vrfybuf) {
140 vrfybuf = malloc(bpt);
141 if(!vrfybuf) errx(1, "malloc");
142 }
143
144 if(fdn == 1) {
145 if(verbose) {
146 printf("Format: %d cylinders, %d heads, %d sectors, %d bytes = %dkb\n",
147 fdt.tracks,fdt.heads,fdt.sectrac,(1<<fdt.secsize) * 128,
148 fdt.tracks*bpt*fdt.heads/1024);
149
150 }
151 memset(trackbuf,0,bpt);
152 for(j=0;inputfd >= 0 && j<bpt;j+=i) {
153 if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
154 close(inputfd);
155 inputfd = -1;
156 break;
157 }
158 nbytes += i;
159 }
160 }
161 for (track = 0; track < fdt.tracks * fdt.heads; track++) {
162 if(verbose) printf("\r%3d ",fdt.tracks * fdt.heads-track);
163 if(verbose) putc((j ? 'I':'Z'),stdout);
164 format_track(fd, track / fdt.heads, fdt.sectrac, track % fdt.heads,
165 fdt.trans, fdt.f_gap, fdt.secsize, 0xe6,
166 fdt.f_inter);
167 if(verbose) putc('F',stdout);
168
169 if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
170 if (write (fd, trackbuf, bpt) != bpt) err(1, "write");
171 if(verbose) putc('W',stdout);
172
173 if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
174 if (read (fd, vrfybuf, bpt) != bpt) err(1, "read");
175 if(verbose) putc('R',stdout);
176
177 if (memcmp(trackbuf,vrfybuf,bpt)) err(1, "compare");
178 if(verbose) putc('C',stdout);
179
180 memset(trackbuf,0,bpt);
181 for(j=0;inputfd >= 0 && j<bpt;j+=i) {
182 if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
183 close(inputfd);
184 inputfd = -1;
185 break;
186 }
187 nbytes += i;
188 }
189 }
190 close(fd);
191 putc('\r',stdout);
192 }
193 if(verbose)
194 printf("%d bytes on %d flopp%s\n",nbytes,fdn,fdn==1?"y":"ies");
195 exit(0);
196 }
197