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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)rmt.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.sbin/rmt/rmt.c,v 1.7 2000/02/12 01:14:33 mjacob Exp $
37 #include <sys/types.h>
38 #include <sys/socket.h>
54 char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];
59 #define DEBUG(f) if (debug) fprintf(debug, f)
60 #define DEBUG1(f,a) if (debug) fprintf(debug, f, a)
61 #define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2)
63 char *checkbuf(char *, int);
65 void getstring(char *);
68 main(int argc, char **argv)
76 debug = fopen(*argv, "w");
84 if (read(0, &c, 1) != 1)
93 DEBUG2("rmtd: O %s %s\n", device, mode);
95 * XXX the rmt protocol does not provide a means to
96 * specify the permission bits; allow rw for everyone,
97 * as modified by the users umask
99 tape = open(device, atoi(mode), 0666);
106 getstring(device); /* discard */
115 DEBUG2("rmtd: L %s %s\n", count, pos);
116 rval = lseek(tape, (off_t)atol(count), atoi(pos));
124 DEBUG1("rmtd: W %s\n", count);
125 record = checkbuf(record, n);
126 for (i = 0; i < n; i += cc) {
127 cc = read(0, &record[i], n - i);
129 DEBUG("rmtd: premature eof\n");
133 rval = write(tape, record, n);
140 DEBUG1("rmtd: R %s\n", count);
142 record = checkbuf(record, n);
143 rval = read(tape, record, n);
146 sprintf(resp, "A%d\n", rval);
147 write(1, resp, strlen(resp));
148 write(1, record, rval);
154 DEBUG2("rmtd: I %s %s\n", op, count);
156 mtop.mt_op = atoi(op);
157 mtop.mt_count = atoi(count);
158 if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
160 rval = mtop.mt_count;
164 case 'S': /* status */
166 { struct mtget mtget;
167 if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
169 rval = sizeof (mtget);
170 if (rval > 24) /* original mtget structure size */
172 sprintf(resp, "A%d\n", rval);
173 write(1, resp, strlen(resp));
174 write(1, (char *)&mtget, rval);
178 case 'V': /* version */
180 DEBUG1("rmtd: V %s\n", op);
185 DEBUG1("rmtd: garbage command %c\n", c);
189 DEBUG1("rmtd: A %d\n", rval);
190 sprintf(resp, "A%d\n", rval);
191 write(1, resp, strlen(resp));
204 for (i = 0; i < SSIZE; i++) {
205 if (read(0, cp+i, 1) != 1)
214 checkbuf(char *record, int size)
217 if (size <= maxrecsize)
221 record = malloc(size);
222 if (record == NULL) {
223 DEBUG("rmtd: cannot allocate buffer space\n");
227 while (size > 1024 &&
228 setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0)
237 DEBUG2("rmtd: E %d (%s)\n", num, strerror(num));
238 snprintf(resp, sizeof(resp), "E%d\n%s\n", num, strerror(num));
239 write(1, resp, strlen(resp));