309 lines
6.9 KiB
C
309 lines
6.9 KiB
C
#ident "$Revision: 1.7 $"
|
|
/**************************************************************************
|
|
* *
|
|
* Copyright (C) 1986, Silicon Graphics, Inc. *
|
|
* *
|
|
* These coded instructions, statements, and computer programs contain *
|
|
* unpublished proprietary information of Silicon Graphics, Inc., and *
|
|
* are protected by Federal copyright law. They may not be disclosed *
|
|
* to third parties or copied or duplicated in any form, in whole or *
|
|
* in part, without the prior written consent of Silicon Graphics, Inc. *
|
|
* *
|
|
**************************************************************************/
|
|
/*
|
|
* Copyright (c) 1983 Regents of the University of California.
|
|
* All rights reserved. The Berkeley software License Agreement
|
|
* specifies the terms and conditions for redistribution.
|
|
*/
|
|
|
|
#ifndef lint
|
|
char copyright[] =
|
|
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
|
|
All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)rmt.c 5.2 (Berkeley) 1/7/86";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
** This version number should sync up with the librmt.a version number,
|
|
** LIBRMT_VERSION, in lib/librmt/rmtlib.h.
|
|
** This is done so that during a remote open, we can decide if we are compatible
|
|
** enough with the library to run.
|
|
*/
|
|
#define RMT_VERSION 2
|
|
|
|
/*
|
|
* rmt
|
|
*/
|
|
#include <stdio.h>
|
|
#include <sgtty.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/mtio.h>
|
|
#include <errno.h>
|
|
#include <sys/tpsc.h>
|
|
#include <sys/stat.h>
|
|
|
|
int tape = -1;
|
|
|
|
char *record;
|
|
int maxrecsize = -1;
|
|
char *checkbuf();
|
|
|
|
#define SSIZE 64
|
|
char device[SSIZE];
|
|
char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];
|
|
|
|
extern errno;
|
|
extern char *sys_errlist[];
|
|
char resp[BUFSIZ];
|
|
struct stat statbuf;
|
|
int client_version = -1;
|
|
|
|
long lseek();
|
|
|
|
FILE *debug;
|
|
#define DEBUG(f) if (debug) fprintf(debug, f)
|
|
#define DEBUG1(f,a) if (debug) fprintf(debug, f, a)
|
|
#define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2)
|
|
|
|
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 'Z': /* fstat */
|
|
getstring(device); /* ignored */
|
|
rval = fstat( tape, &statbuf );
|
|
if ( rval < 0 )
|
|
goto ioerror;
|
|
rval = sizeof (statbuf);
|
|
(void) sprintf(resp, "A%d\n", rval);
|
|
(void) write(1, resp, strlen(resp));
|
|
(void) write(1, (char *)&statbuf, sizeof (statbuf));
|
|
goto top;
|
|
|
|
case 'O':
|
|
if (tape >= 0)
|
|
(void) close(tape);
|
|
getstring(device); getstring(mode);
|
|
DEBUG2("rmtd: O %s %s\n", device, mode);
|
|
tape = open(device, atoi(mode));
|
|
if (tape < 0)
|
|
goto ioerror;
|
|
goto respond;
|
|
|
|
case 'V':
|
|
getstring(device); /* client version # */
|
|
client_version = atoi(device);
|
|
DEBUG1("rmtd: V%d\n", client_version);
|
|
/* in the future, should check if client_version is less
|
|
** than RMT_VERSION then return client_version else
|
|
** return RMT_VERSION
|
|
** Since they are equal for now so it doesn't matter
|
|
*/
|
|
rval = RMT_VERSION;
|
|
goto respond;
|
|
|
|
case 'C':
|
|
DEBUG("rmtd: C\n");
|
|
getstring(device); /* discard */
|
|
if (close(tape) < 0)
|
|
goto ioerror;
|
|
tape = -1;
|
|
goto respond;
|
|
|
|
case 'L':
|
|
getstring(count); getstring(pos);
|
|
DEBUG2("rmtd: L %s %s\n", count, pos);
|
|
rval = lseek(tape, (long) atoi(count), atoi(pos));
|
|
if (rval < 0)
|
|
goto ioerror;
|
|
goto respond;
|
|
|
|
case 'W':
|
|
getstring(count);
|
|
n = atoi(count);
|
|
DEBUG1("rmtd: W %s\n", count);
|
|
record = checkbuf(record, n);
|
|
for (i = 0; i < n; i += cc) {
|
|
cc = read(0, &record[i], n - i);
|
|
if (cc <= 0) {
|
|
DEBUG("rmtd: premature eof\n");
|
|
exit(2);
|
|
}
|
|
}
|
|
rval = write(tape, record, n);
|
|
if (rval < 0)
|
|
goto ioerror;
|
|
goto respond;
|
|
|
|
case 'R':
|
|
getstring(count);
|
|
DEBUG1("rmtd: R %s\n", count);
|
|
n = atoi(count);
|
|
record = checkbuf(record, n);
|
|
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':
|
|
getstring(op); getstring(count);
|
|
DEBUG2("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 */
|
|
DEBUG("rmtd: S\n");
|
|
{ struct mtget mtget;
|
|
char *mtgetp;
|
|
|
|
if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
|
|
goto ioerror;
|
|
/* starting from 3.2, we increase the size of
|
|
** the mtget struct by 4bytes, so if client
|
|
** is of the old version then we have to create an old
|
|
** mtget struct and give them that instead of the
|
|
** new larger struct which might make them core dump
|
|
*/
|
|
if (client_version == -1) {
|
|
struct old_mtget omtget;
|
|
|
|
omtget.mt_type = mtget.mt_type;
|
|
omtget.mt_dsreg = mtget.mt_dsreg;
|
|
omtget.mt_erreg = mtget.mt_erreg;
|
|
omtget.mt_resid = mtget.mt_resid;
|
|
omtget.mt_fileno = mtget.mt_fileno;
|
|
omtget.mt_blkno = mtget.mt_blkno;
|
|
rval = sizeof (omtget);
|
|
mtgetp = (char *)&omtget;
|
|
} else {
|
|
rval = sizeof (mtget);
|
|
mtgetp = (char *)&mtget;
|
|
}
|
|
(void) sprintf(resp, "A%d\n", rval);
|
|
DEBUG1("rmtd: A %d\n", rval);
|
|
(void) write(1, resp, strlen(resp));
|
|
(void) write(1, mtgetp, rval);
|
|
goto top;
|
|
}
|
|
|
|
case 'Q':
|
|
DEBUG("rmtd: Q\n");
|
|
{
|
|
ct_g0inq_data_t info;
|
|
if (ioctl(tape, MTSCSIINQ, &info) < 0)
|
|
goto ioerror;
|
|
rval = sizeof (info);
|
|
(void) sprintf(resp, "A%d\n", rval);
|
|
(void) write(1, resp, strlen(resp));
|
|
(void) write(1, (char *)&info, sizeof (info));
|
|
goto top;
|
|
}
|
|
|
|
case 'B':
|
|
DEBUG("rmtd: B\n");
|
|
{
|
|
int blksize;
|
|
|
|
if (ioctl(tape, MTIOCGETBLKSIZE, &blksize) < 0)
|
|
goto ioerror;
|
|
rval = sizeof (blksize);
|
|
(void) sprintf(resp, "A%d\n", rval);
|
|
(void) write(1, resp, strlen(resp));
|
|
(void) write(1, (char *)&blksize, sizeof (blksize));
|
|
goto top;
|
|
}
|
|
|
|
default:
|
|
if ( c == '\n' )
|
|
goto top;
|
|
DEBUG2("rmtd: garbage command %c (0x%x)\n", c,c);
|
|
exit(3);
|
|
}
|
|
respond:
|
|
DEBUG1("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;
|
|
}
|
|
|
|
getstring(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';
|
|
}
|
|
|
|
char *
|
|
checkbuf(record, size)
|
|
char *record;
|
|
int size;
|
|
{
|
|
extern char *malloc();
|
|
|
|
if (size <= maxrecsize)
|
|
return (record);
|
|
if (record != 0)
|
|
free(record);
|
|
record = malloc(size);
|
|
if (record == 0) {
|
|
DEBUG("rmtd: cannot allocate buffer space\n");
|
|
exit(4);
|
|
}
|
|
maxrecsize = size;
|
|
while (size > 1024 &&
|
|
setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0)
|
|
size -= 1024;
|
|
return (record);
|
|
}
|
|
|
|
error(num)
|
|
int num;
|
|
{
|
|
|
|
DEBUG2("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));
|
|
}
|