[unix-history] / usr / src / usr.sbin / rmt / rmt.c

#ifndef lint
static char sccsid[] = "@(#)rmt.c	4.3 82/05/19";
#endif

/*
 * rmt
 */
#include <stdio.h>
#include <sgtty.h>
#include <sys/types.h>
#include <sys/mtio.h>
#include <errno.h>

int	tape = -1;

#define	MAXRECSIZ	(10*1024)	/* small enuf for pdp-11's too */
char	record[MAXRECSIZ];

#define	SSIZE	64
char	device[SSIZE];
char	count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];

extern	errno;
char	*sys_errlist[];
char	resp[BUFSIZ];

char	*sprintf();
long	lseek();

FILE	*debug;

main(argc, argv)
	int argc;
	char **argv;
{
	int rval;
	char c;
	int n, i, cc;

	argc--, argv++;
	if (argc > 0) {
		debug = fopen(*argv, "w");
		if (debug == 0)
			exit(1);
		(void) setbuf(debug, (char *)0);
	}
top:
	errno = 0;
	rval = 0;
	if (read(0, &c, 1) != 1)
		exit(0);
	switch (c) {

	case 'O':
		if (tape >= 0)
			(void) close(tape);
		gets(device); gets(mode);
if (debug) fprintf(debug, "rmtd: O %s %s\n", device, mode);
		tape = open(device, atoi(mode));
		if (tape < 0)
			goto ioerror;
		goto respond;

	case 'C':
if (debug) fprintf(debug, "rmtd: C\n");
		gets(device);		/* discard */
		if (close(tape) < 0)
			goto ioerror;
		tape = -1;
		goto respond;

	case 'L':
		gets(count); gets(pos);
if (debug) fprintf(debug, "rmtd: L %s %s\n", count, pos);
		rval = lseek(tape, (long) atoi(count), atoi(pos));
		if (rval < 0)
			goto ioerror;
		goto respond;

	case 'W':
		gets(count);
		n = atoi(count);
if (debug) fprintf(debug, "rmtd: W %s\n", count);
		for (i = 0; i < n; i += cc) {
			cc = read(0, &record[i], n - i);
			if (cc <= 0) {
if (debug) fprintf(debug, "rmtd: premature eof\n");
				exit(1);
			}
		}
		rval = write(tape, record, n);
		if (rval < 0)
			goto ioerror;
		goto respond;

	case 'R':
		gets(count);
if (debug) fprintf(debug, "rmtd: R %s\n", count);
		n = atoi(count);
		if (n > sizeof (record))
			n = sizeof (record);
		rval = read(tape, record, n);
		if (rval < 0)
			goto ioerror;
		(void) sprintf(resp, "A%d\n", rval);
		(void) write(1, resp, strlen(resp));
		(void) write(1, record, rval);
		goto top;

	case 'I':
		gets(op); gets(count);
if (debug) fprintf(debug, "rmtd: I %s %s\n", op, count);
		{ struct mtop mtop;
		  mtop.mt_op = atoi(op);
		  mtop.mt_count = atoi(count);
		  if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
			goto ioerror;
		  rval = mtop.mt_count;
		}
		goto respond;

	case 'S':		/* status */
if (debug) fprintf(debug, "rmtd: S\n");
		{ struct mtget mtget;
		  if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
			goto ioerror;
		  rval = sizeof (mtget);
		  (void) write(1, (char *)&mtget, sizeof (mtget));
		  goto respond;
		}

	default:
if (debug) fprintf(debug, "rmtd: garbage command %c\n", c);
		exit(1);
	}
respond:
if (debug) fprintf(debug, "rmtd: A %d\n", rval);
	(void) sprintf(resp, "A%d\n", rval);
	(void) write(1, resp, strlen(resp));
	goto top;
ioerror:
	error(errno);
	goto top;
}

gets(bp)
	char *bp;
{
	int i;
	char *cp = bp;

	for (i = 0; i < SSIZE; i++) {
		if (read(0, cp+i, 1) != 1)
			exit(0);
		if (cp[i] == '\n')
			break;
	}
	cp[i] = '\0';
}

error(num)
	int num;
{

if (debug) fprintf(debug, "rmtd: E %d (%s)\n", num, sys_errlist[num]);
	(void) sprintf(resp, "E%d\n%s\n", num, sys_errlist[num]);
	(void) write(1, resp, strlen (resp));
}
Commit	Line	Data
ca880174	1	#ifndef lint
beb54976	2	static char sccsid[] = "@(#)rmt.c 4.3 82/05/19";
ca880174 BJ	3	#endif
	4
	5	/*
	6	* rmt
	7	*/
	8	#include <stdio.h>
	9	#include <sgtty.h>
	10	#include <sys/types.h>
	11	#include <sys/mtio.h>
	12	#include <errno.h>
	13
	14	int tape = -1;
	15
09b7833f	16	#define MAXRECSIZ (101024) / small enuf for pdp-11's too */
ca880174 BJ	17	char record[MAXRECSIZ];
	18
	19	#define SSIZE 64
	20	char device[SSIZE];
	21	char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];
	22
	23	extern errno;
	24	char *sys_errlist[];
	25	char resp[BUFSIZ];
	26
	27	char *sprintf();
	28	long lseek();
	29
	30	FILE *debug;
	31
	32	main(argc, argv)
	33	int argc;
	34	char **argv;
	35	{
09b7833f	36	int rval;
ca880174 BJ	37	char c;
	38	int n, i, cc;
	39
	40	argc--, argv++;
	41	if (argc > 0) {
	42	debug = fopen(*argv, "w");
	43	if (debug == 0)
	44	exit(1);
	45	(void) setbuf(debug, (char *)0);
	46	}
	47	top:
	48	errno = 0;
	49	rval = 0;
	50	if (read(0, &c, 1) != 1)
	51	exit(0);
	52	switch (c) {
	53
	54	case 'O':
	55	if (tape >= 0)
	56	(void) close(tape);
	57	gets(device); gets(mode);
	58	if (debug) fprintf(debug, "rmtd: O %s %s\n", device, mode);
	59	tape = open(device, atoi(mode));
	60	if (tape < 0)
	61	goto ioerror;
beb54976	62	goto respond;
ca880174 BJ	63
	64	case 'C':
	65	if (debug) fprintf(debug, "rmtd: C\n");
	66	gets(device); /* discard */
	67	if (close(tape) < 0)
	68	goto ioerror;
	69	tape = -1;
beb54976	70	goto respond;
ca880174 BJ	71
	72	case 'L':
	73	gets(count); gets(pos);
	74	if (debug) fprintf(debug, "rmtd: L %s %s\n", count, pos);
	75	rval = lseek(tape, (long) atoi(count), atoi(pos));
	76	if (rval < 0)
	77	goto ioerror;
beb54976	78	goto respond;
ca880174 BJ	79
	80	case 'W':
	81	gets(count);
	82	n = atoi(count);
	83	if (debug) fprintf(debug, "rmtd: W %s\n", count);
	84	for (i = 0; i < n; i += cc) {
	85	cc = read(0, &record[i], n - i);
	86	if (cc <= 0) {
	87	if (debug) fprintf(debug, "rmtd: premature eof\n");
	88	exit(1);
	89	}
	90	}
	91	rval = write(tape, record, n);
	92	if (rval < 0)
	93	goto ioerror;
beb54976	94	goto respond;
ca880174 BJ	95
	96	case 'R':
	97	gets(count);
	98	if (debug) fprintf(debug, "rmtd: R %s\n", count);
	99	n = atoi(count);
	100	if (n > sizeof (record))
	101	n = sizeof (record);
	102	rval = read(tape, record, n);
	103	if (rval < 0)
	104	goto ioerror;
beb54976 KM	105	(void) sprintf(resp, "A%d\n", rval);
	106	(void) write(1, resp, strlen(resp));
	107	(void) write(1, record, rval);
	108	goto top;
ca880174 BJ	109
	110	case 'I':
	111	gets(op); gets(count);
	112	if (debug) fprintf(debug, "rmtd: I %s %s\n", op, count);
	113	{ struct mtop mtop;
	114	mtop.mt_op = atoi(op);
	115	mtop.mt_count = atoi(count);
	116	if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
	117	goto ioerror;
	118	rval = mtop.mt_count;
	119	}
beb54976	120	goto respond;
ca880174 BJ	121
	122	case 'S': /* status */
	123	if (debug) fprintf(debug, "rmtd: S\n");
	124	{ struct mtget mtget;
	125	if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
	126	goto ioerror;
	127	rval = sizeof (mtget);
	128	(void) write(1, (char *)&mtget, sizeof (mtget));
beb54976	129	goto respond;
ca880174 BJ	130	}
	131
	132	default:
	133	if (debug) fprintf(debug, "rmtd: garbage command %c\n", c);
	134	exit(1);
	135	}
beb54976	136	respond:
09b7833f	137	if (debug) fprintf(debug, "rmtd: A %d\n", rval);
ca880174 BJ	138	(void) sprintf(resp, "A%d\n", rval);
	139	(void) write(1, resp, strlen(resp));
	140	goto top;
	141	ioerror:
	142	error(errno);
	143	goto top;
	144	}
	145
	146	gets(bp)
	147	char *bp;
	148	{
	149	int i;
	150	char *cp = bp;
	151
	152	for (i = 0; i < SSIZE; i++) {
	153	if (read(0, cp+i, 1) != 1)
	154	exit(0);
	155	if (cp[i] == '\n')
	156	break;
	157	}
	158	cp[i] = '\0';
	159	}
	160
	161	error(num)
	162	int num;
	163	{
	164
09b7833f	165	if (debug) fprintf(debug, "rmtd: E %d (%s)\n", num, sys_errlist[num]);
ca880174 BJ	166	(void) sprintf(resp, "E%d\n%s\n", num, sys_errlist[num]);
	167	(void) write(1, resp, strlen (resp));
	168	}
09b7833f	169