DataMuseum.dk

top - download

    Length: 918 (0x396)
    Types: TextFile
    Notes: UNIX file
    Names: »bcp.c«

└─⟦f27320a65⟧ Bits:30001972 Commodore 900 hard disk image with partial source code
    └─⟦2d53db1df⟧ UNIX Filesystem
        └─ ⟦this⟧ »frankh/src/junk/bcp.c« 

TextFile

/*
 * kludge program to copy disk fragments from one device to another.
 */
char	buf[512];
long	atol();

main(argc, argv)
int	argc;
char	*argv[];
{
	register int fdi, fdo;
	register long blk, sblk, eblk;

	if (argc != 5)
		panic("usage: bcp in-dev out-dev start-blk stop-blk\n");
	if ((fdi = open(argv[1], 0)) < 0)
		panic("can't open input device\n");
	if ((fdo = open(argv[2], 1)) < 0)
		panic("can't open output device\n");
	sblk = atol(argv[3]);
	eblk = atol(argv[4]);
	if (sblk < 0 || sblk > 41479 || eblk < sblk || eblk >41479)
		panic("bad parameters\n");
	lseek(fdi, sblk*512L, 0);
	lseek(fdo, sblk*512L, 0);
	for (blk = sblk; blk <= eblk; ++blk) {
		if (read(fdi, buf, sizeof(buf)) != sizeof(buf))
			panic("read error on input\n");
		if (write(fdo, buf, sizeof(buf)) != sizeof(buf))
			panic("write error on output\n");
	}
	close(fdi);
	close(fdo);
	exit(0);
}
panic(x)
{
	printf("bcp: %r", &x);
	exit(1);
}