fdwrite.c revision 59651 
1/*
2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@login.dkuug.dk> wrote this file.  As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
8 *
9 * $FreeBSD: head/usr.sbin/fdwrite/fdwrite.c 59651 2000-04-26 11:52:44Z obrien $
10 *
11 */
12
13#include <ctype.h>
14#include <err.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <strings.h>
19#include <unistd.h>
20
21#include <machine/ioctl_fd.h>
22
23int
24format_track(int fd, int cyl, int secs, int head, int rate,
25     int gaplen, int secsize, int fill,int interleave)
26{
27    struct fd_formb f;
28    register int i,j;
29    int il[100];
30
31    memset(il,0,sizeof il);
32    for(j = 0, i = 1; i <= secs; i++) {
33	while(il[(j%secs)+1]) j++;
34	il[(j%secs)+1] = i;
35	j += interleave;
36    }
37
38    f.format_version = FD_FORMAT_VERSION;
39    f.head = head;
40    f.cyl = cyl;
41    f.transfer_rate = rate;
42
43    f.fd_formb_secshift = secsize;
44    f.fd_formb_nsecs = secs;
45    f.fd_formb_gaplen = gaplen;
46    f.fd_formb_fillbyte = fill;
47    for(i = 0; i < secs; i++) {
48	f.fd_formb_cylno(i) = cyl;
49	f.fd_formb_headno(i) = head;
50	f.fd_formb_secno(i) = il[i+1];
51	f.fd_formb_secsize(i) = secsize;
52    }
53    return ioctl(fd, FD_FORM, (caddr_t)&f);
54}
55
56static void
57usage()
58{
59	fprintf(stderr, "usage: fdwrite [-v] [-y] [-f inputfile] [-d device]\n");
60	exit(2);
61}
62
63int
64main(int argc, char **argv)
65{
66    int inputfd = -1, c, fdn = 0, i,j,fd;
67    int bpt, verbose=1, nbytes=0, track;
68    int interactive = 1;
69    char *device= "/dev/fd0", *trackbuf = 0,*vrfybuf = 0;
70    struct fd_type fdt;
71    FILE *tty;
72
73    setbuf(stdout,0);
74    while((c = getopt(argc, argv, "d:f:vy")) != -1)
75	    switch(c) {
76	    case 'd':	/* Which drive */
77		    device = optarg;
78		    break;
79
80	    case 'f':	/* input file */
81		    if (inputfd >= 0)
82			    close(inputfd);
83		    inputfd = open(optarg,O_RDONLY);
84		    if (inputfd < 0)
85			    err(1, "%s", optarg);
86		    break;
87
88	    case 'v':  /* Toggle verbosity */
89		    verbose = !verbose;
90		    break;
91
92	    case 'y':  /* Don't confirm? */
93		    interactive = 0;
94		    break;
95
96	    case '?': default:
97		    usage();
98	    }
99
100    if (inputfd < 0)
101	inputfd = 0;
102
103    if (!isatty(1))
104	interactive = 0;
105
106    if(optind < argc)
107	    usage();
108
109    tty = fopen("/dev/tty","r+");
110    if(!tty)
111	    err(1, "/dev/tty");
112    setbuf(tty,0);
113
114    for(j=1;j > 0;) {
115        fdn++;
116	if (interactive) {
117	    fprintf(tty,
118		    "Please insert floppy #%d in drive %s and press return >",
119		    fdn,device);
120	    while(1) {
121		i = getc(tty);
122		if(i == '\n') break;
123	    }
124	}
125
126	if((fd = open(device, O_RDWR)) < 0)
127	    err(1, "%s", device);
128
129	if(ioctl(fd, FD_GTYPE, &fdt) < 0)
130	    errx(1, "not a floppy disk: %s", device);
131
132	bpt = fdt.sectrac * (1<<fdt.secsize) * 128;
133	if(!trackbuf) {
134	    trackbuf = malloc(bpt);
135	    if(!trackbuf) errx(1, "malloc");
136	}
137	if(!vrfybuf) {
138	    vrfybuf = malloc(bpt);
139	    if(!vrfybuf) errx(1, "malloc");
140	}
141
142	if(fdn == 1) {
143	    if(verbose) {
144		printf("Format: %d cylinders, %d heads, %d sectors, %d bytes = %dkb\n",
145		fdt.tracks,fdt.heads,fdt.sectrac,(1<<fdt.secsize) * 128,
146		fdt.tracks*bpt*fdt.heads/1024);
147
148	    }
149	    memset(trackbuf,0,bpt);
150	    for(j=0;inputfd >= 0 && j<bpt;j+=i) {
151		if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
152		    close(inputfd);
153		    inputfd = -1;
154		    break;
155		}
156		nbytes += i;
157	    }
158	}
159	for (track = 0; track < fdt.tracks * fdt.heads; track++) {
160	    if(verbose) printf("\r%3d ",fdt.tracks * fdt.heads-track);
161	    if(verbose) putc((j ? 'I':'Z'),stdout);
162	    format_track(fd, track / fdt.heads, fdt.sectrac, track % fdt.heads,
163		    fdt.trans, fdt.f_gap, fdt.secsize, 0xe6,
164		    fdt.f_inter);
165	    if(verbose) putc('F',stdout);
166
167	    if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
168	    if (write (fd, trackbuf, bpt) != bpt) err(1, "write");
169	    if(verbose) putc('W',stdout);
170
171	    if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
172	    if (read (fd, vrfybuf, bpt) != bpt) err(1, "read");
173	    if(verbose) putc('R',stdout);
174
175	    if (memcmp(trackbuf,vrfybuf,bpt)) err(1, "compare");
176	    if(verbose) putc('C',stdout);
177
178	    memset(trackbuf,0,bpt);
179	    for(j=0;inputfd >= 0 && j<bpt;j+=i) {
180		if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
181		    close(inputfd);
182		    inputfd = -1;
183		    break;
184		}
185		nbytes += i;
186	    }
187	}
188	close(fd);
189	putc('\r',stdout);
190    }
191    if(verbose)
192	printf("%d bytes on %d flopp%s\n",nbytes,fdn,fdn==1?"y":"ies");
193    exit(0);
194}
195