11553Srgrimes/* 21553Srgrimes * Copyright (c) 1983, 1993 31553Srgrimes * The Regents of the University of California. All rights reserved. 41553Srgrimes * 51553Srgrimes * Redistribution and use in source and binary forms, with or without 61553Srgrimes * modification, are permitted provided that the following conditions 71553Srgrimes * are met: 81553Srgrimes * 1. Redistributions of source code must retain the above copyright 91553Srgrimes * notice, this list of conditions and the following disclaimer. 101553Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111553Srgrimes * notice, this list of conditions and the following disclaimer in the 121553Srgrimes * documentation and/or other materials provided with the distribution. 131553Srgrimes * 4. Neither the name of the University nor the names of its contributors 141553Srgrimes * may be used to endorse or promote products derived from this software 151553Srgrimes * without specific prior written permission. 161553Srgrimes * 171553Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181553Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191553Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201553Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211553Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221553Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231553Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241553Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251553Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261553Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271553Srgrimes * SUCH DAMAGE. 281553Srgrimes */ 291553Srgrimes 30114601Sobrien#if 0 311553Srgrimes#ifndef lint 3230374Scharnierstatic const char copyright[] = 331553Srgrimes"@(#) Copyright (c) 1983, 1993\n\ 341553Srgrimes The Regents of the University of California. All rights reserved.\n"; 351553Srgrimes#endif /* not lint */ 361553Srgrimes 371553Srgrimes#ifndef lint 381553Srgrimesstatic char sccsid[] = "@(#)rmt.c 8.1 (Berkeley) 6/6/93"; 39114601Sobrien#endif /* not lint */ 4030374Scharnier#endif 41114601Sobrien#include <sys/cdefs.h> 42114601Sobrien__FBSDID("$FreeBSD$"); 431553Srgrimes 441553Srgrimes/* 451553Srgrimes * rmt 461553Srgrimes */ 471553Srgrimes#include <sys/types.h> 481553Srgrimes#include <sys/socket.h> 491553Srgrimes#include <sys/mtio.h> 501553Srgrimes#include <errno.h> 511553Srgrimes#include <fcntl.h> 521553Srgrimes#include <stdio.h> 531553Srgrimes#include <stdlib.h> 541553Srgrimes#include <string.h> 551553Srgrimes#include <unistd.h> 561553Srgrimes 57227259Sedstatic int tape = -1; 581553Srgrimes 59227259Sedstatic char *record; 60227259Sedstatic int maxrecsize = -1; 611553Srgrimes 621553Srgrimes#define SSIZE 64 63227259Sedstatic char device[SSIZE]; 64227259Sedstatic char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE]; 651553Srgrimes 66227259Sedstatic char resp[BUFSIZ]; 671553Srgrimes 68227259Sedstatic FILE *debug; 691553Srgrimes#define DEBUG(f) if (debug) fprintf(debug, f) 701553Srgrimes#define DEBUG1(f,a) if (debug) fprintf(debug, f, a) 711553Srgrimes#define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2) 721553Srgrimes 73227259Sedstatic char *checkbuf(char *, int); 74227259Sedstatic void error(int); 75227259Sedstatic void getstring(char *); 761553Srgrimes 771553Srgrimesint 7899822Salfredmain(int argc, char **argv) 791553Srgrimes{ 801553Srgrimes int rval; 811553Srgrimes char c; 821553Srgrimes int n, i, cc; 831553Srgrimes 841553Srgrimes argc--, argv++; 851553Srgrimes if (argc > 0) { 861553Srgrimes debug = fopen(*argv, "w"); 871553Srgrimes if (debug == 0) 881553Srgrimes exit(1); 891553Srgrimes (void)setbuf(debug, (char *)0); 901553Srgrimes } 911553Srgrimestop: 921553Srgrimes errno = 0; 931553Srgrimes rval = 0; 9480381Ssheldonh if (read(STDIN_FILENO, &c, 1) != 1) 951553Srgrimes exit(0); 961553Srgrimes switch (c) { 971553Srgrimes 981553Srgrimes case 'O': 991553Srgrimes if (tape >= 0) 1001553Srgrimes (void) close(tape); 1011553Srgrimes getstring(device); 1021553Srgrimes getstring(mode); 1031553Srgrimes DEBUG2("rmtd: O %s %s\n", device, mode); 1047707Sjoerg /* 1057707Sjoerg * XXX the rmt protocol does not provide a means to 1067707Sjoerg * specify the permission bits; allow rw for everyone, 1077707Sjoerg * as modified by the users umask 1087707Sjoerg */ 1097707Sjoerg tape = open(device, atoi(mode), 0666); 1101553Srgrimes if (tape < 0) 1111553Srgrimes goto ioerror; 1121553Srgrimes goto respond; 1131553Srgrimes 1141553Srgrimes case 'C': 1151553Srgrimes DEBUG("rmtd: C\n"); 1161553Srgrimes getstring(device); /* discard */ 1171553Srgrimes if (close(tape) < 0) 1181553Srgrimes goto ioerror; 1191553Srgrimes tape = -1; 1201553Srgrimes goto respond; 1211553Srgrimes 1221553Srgrimes case 'L': 1231553Srgrimes getstring(count); 1241553Srgrimes getstring(pos); 1251553Srgrimes DEBUG2("rmtd: L %s %s\n", count, pos); 12683096Sache rval = lseek(tape, (off_t)strtoll(count, NULL, 10), atoi(pos)); 1271553Srgrimes if (rval < 0) 1281553Srgrimes goto ioerror; 1291553Srgrimes goto respond; 1301553Srgrimes 1311553Srgrimes case 'W': 1321553Srgrimes getstring(count); 1331553Srgrimes n = atoi(count); 1341553Srgrimes DEBUG1("rmtd: W %s\n", count); 1351553Srgrimes record = checkbuf(record, n); 1361553Srgrimes for (i = 0; i < n; i += cc) { 13780381Ssheldonh cc = read(STDIN_FILENO, &record[i], n - i); 1381553Srgrimes if (cc <= 0) { 1391553Srgrimes DEBUG("rmtd: premature eof\n"); 1401553Srgrimes exit(2); 1411553Srgrimes } 1421553Srgrimes } 1431553Srgrimes rval = write(tape, record, n); 1441553Srgrimes if (rval < 0) 1451553Srgrimes goto ioerror; 1461553Srgrimes goto respond; 1471553Srgrimes 1481553Srgrimes case 'R': 1491553Srgrimes getstring(count); 1501553Srgrimes DEBUG1("rmtd: R %s\n", count); 1511553Srgrimes n = atoi(count); 1521553Srgrimes record = checkbuf(record, n); 1531553Srgrimes rval = read(tape, record, n); 1541553Srgrimes if (rval < 0) 1551553Srgrimes goto ioerror; 1561553Srgrimes (void)sprintf(resp, "A%d\n", rval); 15780381Ssheldonh (void)write(STDOUT_FILENO, resp, strlen(resp)); 15880381Ssheldonh (void)write(STDOUT_FILENO, record, rval); 1591553Srgrimes goto top; 1601553Srgrimes 1611553Srgrimes case 'I': 1621553Srgrimes getstring(op); 1631553Srgrimes getstring(count); 1641553Srgrimes DEBUG2("rmtd: I %s %s\n", op, count); 1651553Srgrimes { struct mtop mtop; 1661553Srgrimes mtop.mt_op = atoi(op); 1671553Srgrimes mtop.mt_count = atoi(count); 1681553Srgrimes if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0) 1691553Srgrimes goto ioerror; 1701553Srgrimes rval = mtop.mt_count; 1711553Srgrimes } 1721553Srgrimes goto respond; 1731553Srgrimes 1741553Srgrimes case 'S': /* status */ 1751553Srgrimes DEBUG("rmtd: S\n"); 1761553Srgrimes { struct mtget mtget; 1771553Srgrimes if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0) 1781553Srgrimes goto ioerror; 1791553Srgrimes rval = sizeof (mtget); 18057155Smjacob if (rval > 24) /* original mtget structure size */ 18157155Smjacob rval = 24; 1821553Srgrimes (void)sprintf(resp, "A%d\n", rval); 18380381Ssheldonh (void)write(STDOUT_FILENO, resp, strlen(resp)); 18480381Ssheldonh (void)write(STDOUT_FILENO, (char *)&mtget, rval); 1851553Srgrimes goto top; 1861553Srgrimes } 1871553Srgrimes 18839264Sgibbs case 'V': /* version */ 18939264Sgibbs getstring(op); 19039264Sgibbs DEBUG1("rmtd: V %s\n", op); 19139264Sgibbs rval = 2; 19239264Sgibbs goto respond; 19339264Sgibbs 1941553Srgrimes default: 1951553Srgrimes DEBUG1("rmtd: garbage command %c\n", c); 1961553Srgrimes exit(3); 1971553Srgrimes } 1981553Srgrimesrespond: 1991553Srgrimes DEBUG1("rmtd: A %d\n", rval); 2001553Srgrimes (void)sprintf(resp, "A%d\n", rval); 20180381Ssheldonh (void)write(STDOUT_FILENO, resp, strlen(resp)); 2021553Srgrimes goto top; 2031553Srgrimesioerror: 2041553Srgrimes error(errno); 2051553Srgrimes goto top; 2061553Srgrimes} 2071553Srgrimes 2081553Srgrimesvoid 209201387Sedgetstring(char *bp) 2101553Srgrimes{ 2111553Srgrimes int i; 2121553Srgrimes char *cp = bp; 2131553Srgrimes 2141553Srgrimes for (i = 0; i < SSIZE; i++) { 21580381Ssheldonh if (read(STDIN_FILENO, cp+i, 1) != 1) 2161553Srgrimes exit(0); 2171553Srgrimes if (cp[i] == '\n') 2181553Srgrimes break; 2191553Srgrimes } 2201553Srgrimes cp[i] = '\0'; 2211553Srgrimes} 2221553Srgrimes 223227259Sedstatic char * 224201387Sedcheckbuf(char *rec, int size) 2251553Srgrimes{ 2261553Srgrimes 2271553Srgrimes if (size <= maxrecsize) 22899822Salfred return (rec); 22999822Salfred if (rec != 0) 23099822Salfred free(rec); 23199822Salfred rec = malloc(size); 23299822Salfred if (rec == 0) { 2331553Srgrimes DEBUG("rmtd: cannot allocate buffer space\n"); 2341553Srgrimes exit(4); 2351553Srgrimes } 2361553Srgrimes maxrecsize = size; 2371553Srgrimes while (size > 1024 && 2381553Srgrimes setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0) 2391553Srgrimes size -= 1024; 24099822Salfred return (rec); 2411553Srgrimes} 2421553Srgrimes 243227259Sedstatic void 244201387Sederror(int num) 2451553Srgrimes{ 2461553Srgrimes 2471553Srgrimes DEBUG2("rmtd: E %d (%s)\n", num, strerror(num)); 24822464Simp (void)snprintf(resp, sizeof(resp), "E%d\n%s\n", num, strerror(num)); 24980381Ssheldonh (void)write(STDOUT_FILENO, resp, strlen(resp)); 2501553Srgrimes} 251