[unix-history] / usr.sbin / flcopy / flcopy.c

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)flcopy.c	5.4 (Berkeley) 1/20/91";
#endif /* not lint */

#include <sys/file.h>
#include <stdio.h>
#include "pathnames.h"

int	floppydes;
char	*flopname = _PATH_FLOPPY;
long	dsize = 77 * 26 * 128;
int	hflag;
int	rflag;

main(argc, argv)
	register char **argv;
{
	extern char *optarg;
	extern int optind;
	static char buff[512];
	register long count;
	register startad = -26 * 128;
	register int n, file;
	register char *cp;
	int ch;

	while ((ch = getopt(argc, argv, "f:hrt:")) != EOF)
		switch(ch) {
		case 'f':
			flopname = optarg;
			break;
		case 'h':
			hflag = 1;
			printf("Halftime!\n");
			if ((file = open("floppy", 0)) < 0) {
				printf("can't open \"floppy\"\n");
				exit(1);
			}
			break;
		case 'r':
			rflag = 1;
			break;
		case 't':
			dsize = atoi(optarg);
			if (dsize <= 0 || dsize > 77) {
				(void)fprintf(stderr,
				    "flcopy: bad number of tracks (0 - 77).\n");
				exit(2);
			}
			dsize *= 26 * 128;
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (!hflag) {
		file = open("floppy", O_RDWR|O_CREAT|O_TRUNC, 0666);
		if (file < 0) {
			printf("can't open \"floppy\"\n");
			exit(1);
		}
		for (count = dsize; count > 0 ; count -= 512) {
			n = count > 512 ? 512 : count;
			lread(startad, n, buff);
			write(file, buff, n);
			startad += 512;
		}
	}
	if (rflag)
		exit(0);
	printf("Change Floppy, Hit return when done.\n");
	gets(buff);
	lseek(file, 0, 0);
	count = dsize;
	startad = -26 * 128;
	for ( ; count > 0 ; count -= 512) {
		n = count > 512 ? 512 : count;
		read(file, buff, n);
		lwrite(startad, n, buff);
		startad += 512;
	}
	exit(0);
}

rt_init()
{
	static initized = 0;
	int mode = 2;

	if (initized)
		return;
	if (rflag)
		mode = 0;
	initized = 1;
	if ((floppydes = open(flopname, mode)) < 0) {
		printf("Floppy open failed\n");
		exit(1);
	}
}

/*
 * Logical to physical adress translation
 */
long
trans(logical)
	register int logical;
{
	register int sector, bytes, track;

	logical += 26 * 128;
	bytes = (logical & 127);
	logical >>= 7;
	sector = logical % 26;
	if (sector >= 13)
		sector = sector*2 +1;
	else
		sector *= 2;
	sector += 26 + ((track = (logical / 26)) - 1) * 6;
	sector %= 26;
	return ((((track *26) + sector) << 7) + bytes);
}

lread(startad, count, obuff)
	register startad, count;
	register char *obuff;
{
	long trans();
	extern floppydes;

	rt_init();
	while ((count -= 128) >= 0) {
		lseek(floppydes, trans(startad), 0);
		read(floppydes, obuff, 128);
		obuff += 128;
		startad += 128;
	}
}

lwrite(startad, count, obuff)
	register startad, count;
	register char *obuff;
{
	long trans();
	extern floppydes;

	rt_init();
	while ((count -= 128) >= 0) {
		lseek(floppydes, trans(startad), 0);
		write(floppydes, obuff, 128);
		obuff += 128;
		startad += 128;
	}
}

usage()
{
	(void)fprintf(stderr, "usage: flcopy [-hr] [-f file] [-t ntracks]\n");
	exit(1);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1989 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
	41	static char sccsid[] = "@(#)flcopy.c 5.4 (Berkeley) 1/20/91";
	42	#endif /* not lint */
	43
	44	#include <sys/file.h>
	45	#include <stdio.h>
	46	#include "pathnames.h"
	47
	48	int floppydes;
	49	char *flopname = _PATH_FLOPPY;
	50	long dsize = 77 * 26 * 128;
	51	int hflag;
	52	int rflag;
	53
	54	main(argc, argv)
	55	register char **argv;
	56	{
	57	extern char *optarg;
	58	extern int optind;
	59	static char buff[512];
	60	register long count;
	61	register startad = -26 * 128;
	62	register int n, file;
	63	register char *cp;
	64	int ch;
65
66	while ((ch = getopt(argc, argv, "f:hrt:")) != EOF)
67	switch(ch) {
68	case 'f':
69	flopname = optarg;
70	break;
71	case 'h':
72	hflag = 1;
73	printf("Halftime!\n");
74	if ((file = open("floppy", 0)) < 0) {
75	printf("can't open \"floppy\"\n");
76	exit(1);
77	}
78	break;
79	case 'r':
80	rflag = 1;
81	break;
82	case 't':
83	dsize = atoi(optarg);
84	if (dsize <= 0 \|\| dsize > 77) {
85	(void)fprintf(stderr,
86	"flcopy: bad number of tracks (0 - 77).\n");
87	exit(2);
88	}
89	dsize = 26 128;
90	break;
91	case '?':
92	default:
93	usage();
94	}
95	argc -= optind;
96	argv += optind;
97
98	if (!hflag) {
99	file = open("floppy", O_RDWR\|O_CREAT\|O_TRUNC, 0666);
100	if (file < 0) {
101	printf("can't open \"floppy\"\n");
102	exit(1);
103	}
104	for (count = dsize; count > 0 ; count -= 512) {
105	n = count > 512 ? 512 : count;
106	lread(startad, n, buff);
107	write(file, buff, n);
108	startad += 512;
109	}
110	}
111	if (rflag)
112	exit(0);
113	printf("Change Floppy, Hit return when done.\n");
114	gets(buff);
115	lseek(file, 0, 0);
116	count = dsize;
117	startad = -26 * 128;
118	for ( ; count > 0 ; count -= 512) {
119	n = count > 512 ? 512 : count;
120	read(file, buff, n);
121	lwrite(startad, n, buff);
122	startad += 512;
123	}
124	exit(0);
125	}
126
127	rt_init()
128	{
129	static initized = 0;
130	int mode = 2;
131
132	if (initized)
133	return;
134	if (rflag)
135	mode = 0;
136	initized = 1;
137	if ((floppydes = open(flopname, mode)) < 0) {
138	printf("Floppy open failed\n");
139	exit(1);
140	}
141	}
142
143	/*
144	* Logical to physical adress translation
145	*/
146	long
147	trans(logical)
148	register int logical;
149	{
150	register int sector, bytes, track;
151
152	logical += 26 * 128;
153	bytes = (logical & 127);
154	logical >>= 7;
155	sector = logical % 26;
156	if (sector >= 13)
157	sector = sector*2 +1;
158	else
159	sector *= 2;
160	sector += 26 + ((track = (logical / 26)) - 1) * 6;
161	sector %= 26;
162	return ((((track *26) + sector) << 7) + bytes);
163	}
164
165	lread(startad, count, obuff)
166	register startad, count;
167	register char *obuff;
168	{
169	long trans();
170	extern floppydes;
171
172	rt_init();
173	while ((count -= 128) >= 0) {
174	lseek(floppydes, trans(startad), 0);
175	read(floppydes, obuff, 128);
176	obuff += 128;
177	startad += 128;
178	}
179	}
180
181	lwrite(startad, count, obuff)
182	register startad, count;
183	register char *obuff;
184	{
185	long trans();
186	extern floppydes;
187
188	rt_init();
189	while ((count -= 128) >= 0) {
190	lseek(floppydes, trans(startad), 0);
191	write(floppydes, obuff, 128);
192	obuff += 128;
193	startad += 128;
194	}
195	}
196
197	usage()
198	{
199	(void)fprintf(stderr, "usage: flcopy [-hr] [-f file] [-t ntracks]\n");
200	exit(1);
201	}