2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)rmt.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.sbin/rmt/rmt.c,v 1.7 2000/02/12 01:14:33 mjacob Exp $
36 * $DragonFly: src/usr.sbin/rmt/rmt.c,v 1.4 2004/12/18 22:48:05 swildner Exp $
42 #include <sys/types.h>
43 #include <sys/socket.h>
60 char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];
65 #define DEBUG(f) if (debug) fprintf(debug, f)
66 #define DEBUG1(f,a) if (debug) fprintf(debug, f, a)
67 #define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2)
69 char *checkbuf(char *, int);
71 void getstring(char *);
84 debug = fopen(*argv, "w");
87 setbuf(debug, (char *)0);
92 if (read(0, &c, 1) != 1)
101 DEBUG2("rmtd: O %s %s\n", device, mode);
103 * XXX the rmt protocol does not provide a means to
104 * specify the permission bits; allow rw for everyone,
105 * as modified by the users umask
107 tape = open(device, atoi(mode), 0666);
114 getstring(device); /* discard */
123 DEBUG2("rmtd: L %s %s\n", count, pos);
124 rval = lseek(tape, (off_t)atol(count), atoi(pos));
132 DEBUG1("rmtd: W %s\n", count);
133 record = checkbuf(record, n);
134 for (i = 0; i < n; i += cc) {
135 cc = read(0, &record[i], n - i);
137 DEBUG("rmtd: premature eof\n");
141 rval = write(tape, record, n);
148 DEBUG1("rmtd: R %s\n", count);
150 record = checkbuf(record, n);
151 rval = read(tape, record, n);
154 sprintf(resp, "A%d\n", rval);
155 write(1, resp, strlen(resp));
156 write(1, record, rval);
162 DEBUG2("rmtd: I %s %s\n", op, count);
164 mtop.mt_op = atoi(op);
165 mtop.mt_count = atoi(count);
166 if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
168 rval = mtop.mt_count;
172 case 'S': /* status */
174 { struct mtget mtget;
175 if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
177 rval = sizeof (mtget);
178 if (rval > 24) /* original mtget structure size */
180 sprintf(resp, "A%d\n", rval);
181 write(1, resp, strlen(resp));
182 write(1, (char *)&mtget, rval);
186 case 'V': /* version */
188 DEBUG1("rmtd: V %s\n", op);
193 DEBUG1("rmtd: garbage command %c\n", c);
197 DEBUG1("rmtd: A %d\n", rval);
198 sprintf(resp, "A%d\n", rval);
199 write(1, resp, strlen(resp));
213 for (i = 0; i < SSIZE; i++) {
214 if (read(0, cp+i, 1) != 1)
223 checkbuf(record, size)
228 if (size <= maxrecsize)
232 record = malloc(size);
234 DEBUG("rmtd: cannot allocate buffer space\n");
238 while (size > 1024 &&
239 setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0)
249 DEBUG2("rmtd: E %d (%s)\n", num, strerror(num));
250 snprintf(resp, sizeof(resp), "E%d\n%s\n", num, strerror(num));
251 write(1, resp, strlen(resp));