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![rilysh](/assets/img/avatar_default.png)
1. Both trackbuf and vrfybuf are initialized to zero (NULL). While it's okay to initialize pointers to zero, to keep consistency, as they're explicitly pointers, it's better to just use NULL ((void *)0) instead of 0 (both are equivalent to the compilers). 2. Call free() for both trackbuf and vrfybuf after their job has been done. 3. Remove the register keyword. Compilers generally ignore this keyword (except for very very old compilers and CPUs). 4. Remove the ctype.h header. It's not being used anywhere in the file. Signed-off-by: rilysh <nightquick@proton.me> Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/1059
199 lines
4.6 KiB
C
199 lines
4.6 KiB
C
/*-
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* SPDX-License-Identifier: Beerware
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*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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*/
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#include <err.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/fdcio.h>
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static int
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format_track(int fd, int cyl, int secs, int head, int rate,
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int gaplen, int secsize, int fill, int interleave)
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{
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struct fd_formb f;
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int i, j;
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int il[100];
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memset(il,0,sizeof il);
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for(j = 0, i = 1; i <= secs; i++) {
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while(il[(j%secs)+1]) j++;
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il[(j%secs)+1] = i;
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j += interleave;
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}
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f.format_version = FD_FORMAT_VERSION;
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f.head = head;
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f.cyl = cyl;
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f.transfer_rate = rate;
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f.fd_formb_secshift = secsize;
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f.fd_formb_nsecs = secs;
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f.fd_formb_gaplen = gaplen;
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f.fd_formb_fillbyte = fill;
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for(i = 0; i < secs; i++) {
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f.fd_formb_cylno(i) = cyl;
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f.fd_formb_headno(i) = head;
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f.fd_formb_secno(i) = il[i+1];
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f.fd_formb_secsize(i) = secsize;
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}
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return ioctl(fd, FD_FORM, (caddr_t)&f);
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: fdwrite [-v] [-y] [-f inputfile] [-d device]\n");
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exit(2);
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}
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int
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main(int argc, char **argv)
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{
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int inputfd = -1, c, fdn = 0, i,j,fd;
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int bpt, verbose=1, nbytes=0, track;
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int interactive = 1;
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const char *device= "/dev/fd0";
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char *trackbuf = NULL, *vrfybuf = NULL;
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struct fd_type fdt;
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FILE *tty;
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setbuf(stdout,0);
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while((c = getopt(argc, argv, "d:f:vy")) != -1)
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switch(c) {
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case 'd': /* Which drive */
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device = optarg;
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break;
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case 'f': /* input file */
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if (inputfd >= 0)
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close(inputfd);
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inputfd = open(optarg,O_RDONLY);
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if (inputfd < 0)
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err(1, "%s", optarg);
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break;
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case 'v': /* Toggle verbosity */
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verbose = !verbose;
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break;
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case 'y': /* Don't confirm? */
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interactive = 0;
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break;
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case '?': default:
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usage();
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}
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if (inputfd < 0)
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inputfd = 0;
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if (!isatty(1))
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interactive = 0;
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if(optind < argc)
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usage();
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tty = fopen(_PATH_TTY,"r+");
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if(!tty)
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err(1, _PATH_TTY);
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setbuf(tty,0);
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for(j=1;j > 0;) {
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fdn++;
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if (interactive) {
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fprintf(tty,
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"Please insert floppy #%d in drive %s and press return >",
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fdn,device);
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while(1) {
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i = getc(tty);
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if(i == '\n') break;
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}
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}
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if((fd = open(device, O_RDWR)) < 0)
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err(1, "%s", device);
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if(ioctl(fd, FD_GTYPE, &fdt) < 0)
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errx(1, "not a floppy disk: %s", device);
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bpt = fdt.sectrac * (1<<fdt.secsize) * 128;
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if(!trackbuf) {
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trackbuf = malloc(bpt);
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if(!trackbuf) errx(1, "malloc");
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}
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if(!vrfybuf) {
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vrfybuf = malloc(bpt);
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if(!vrfybuf) errx(1, "malloc");
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}
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if(fdn == 1) {
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if(verbose) {
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printf("Format: %d cylinders, %d heads, %d sectors, %d bytes = %dkb\n",
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fdt.tracks,fdt.heads,fdt.sectrac,(1<<fdt.secsize) * 128,
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fdt.tracks*bpt*fdt.heads/1024);
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}
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memset(trackbuf,0,bpt);
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for(j=0;inputfd >= 0 && j<bpt;j+=i) {
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if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
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close(inputfd);
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inputfd = -1;
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break;
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}
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nbytes += i;
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}
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}
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for (track = 0; track < fdt.tracks * fdt.heads; track++) {
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if(verbose) printf("\r%3d ",fdt.tracks * fdt.heads-track);
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if(verbose) putc((j ? 'I':'Z'),stdout);
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format_track(fd, track / fdt.heads, fdt.sectrac, track % fdt.heads,
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fdt.trans, fdt.f_gap, fdt.secsize, 0xe6,
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fdt.f_inter);
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if(verbose) putc('F',stdout);
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if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
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if (write (fd, trackbuf, bpt) != bpt) err(1, "write");
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if(verbose) putc('W',stdout);
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if (lseek (fd, (long) track*bpt, 0) < 0) err(1, "lseek");
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if (read (fd, vrfybuf, bpt) != bpt) err(1, "read");
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if(verbose) putc('R',stdout);
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if (memcmp(trackbuf,vrfybuf,bpt)) err(1, "compare");
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if(verbose) putc('C',stdout);
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memset(trackbuf,0,bpt);
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for(j=0;inputfd >= 0 && j<bpt;j+=i) {
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if(!(i = read(inputfd,trackbuf+j,bpt-j))) {
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close(inputfd);
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inputfd = -1;
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break;
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}
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nbytes += i;
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}
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}
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close(fd);
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putc('\r',stdout);
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}
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if(verbose)
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printf("%d bytes on %d flopp%s\n",nbytes,fdn,fdn==1?"y":"ies");
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free(trackbuf);
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free(vrfybuf);
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exit(0);
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}
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