257 lines
6.1 KiB
C
257 lines
6.1 KiB
C
/* $NetBSD: rmt.c,v 1.14 2003/08/07 11:25:42 agc Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)rmt.c 8.1 (Berkeley) 6/6/93";
|
|
#else
|
|
__RCSID("$NetBSD: rmt.c,v 1.14 2003/08/07 11:25:42 agc Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* rmt
|
|
*/
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mtio.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int tape = -1;
|
|
|
|
char *record;
|
|
int maxrecsize = -1;
|
|
|
|
#define SSIZE 64
|
|
char device[SSIZE];
|
|
char count[SSIZE], mode[SSIZE], pos[SSIZE], op[SSIZE];
|
|
|
|
char resp[BUFSIZ];
|
|
|
|
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)
|
|
|
|
char *checkbuf __P((char *, int));
|
|
void error __P((int));
|
|
int main __P((int, char **));
|
|
void getstring __P((char *, size_t));
|
|
|
|
int
|
|
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(STDIN_FILENO, &c, 1) != 1)
|
|
exit(0);
|
|
switch (c) {
|
|
|
|
case 'O':
|
|
if (tape >= 0)
|
|
(void) close(tape);
|
|
getstring(device, sizeof(device));
|
|
getstring(mode, sizeof(mode));
|
|
DEBUG2("rmtd: O %s %s\n", device, mode);
|
|
tape = open(device, atoi(mode),
|
|
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
|
|
if (tape < 0)
|
|
goto ioerror;
|
|
goto respond;
|
|
|
|
case 'C':
|
|
DEBUG("rmtd: C\n");
|
|
getstring(device, sizeof(device)); /* discard */
|
|
if (close(tape) < 0)
|
|
goto ioerror;
|
|
tape = -1;
|
|
goto respond;
|
|
|
|
case 'L':
|
|
getstring(count, sizeof(count));
|
|
getstring(pos, sizeof(pos));
|
|
DEBUG2("rmtd: L %s %s\n", count, pos);
|
|
rval = lseek(tape, (off_t)strtoll(count, NULL, 10), atoi(pos));
|
|
if (rval < 0)
|
|
goto ioerror;
|
|
goto respond;
|
|
|
|
case 'W':
|
|
getstring(count, sizeof(count));
|
|
n = atoi(count);
|
|
DEBUG1("rmtd: W %s\n", count);
|
|
record = checkbuf(record, n);
|
|
for (i = 0; i < n; i += cc) {
|
|
cc = read(STDIN_FILENO, &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, sizeof(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)snprintf(resp, sizeof(resp), "A%d\n", rval);
|
|
(void)write(STDOUT_FILENO, resp, strlen(resp));
|
|
(void)write(STDOUT_FILENO, record, rval);
|
|
goto top;
|
|
|
|
case 'I':
|
|
getstring(op, sizeof(op));
|
|
getstring(count, sizeof(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;
|
|
|
|
if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
|
|
goto ioerror;
|
|
rval = sizeof (mtget);
|
|
/* limit size to 'original' mtget size */
|
|
if (rval > 24)
|
|
rval = 24;
|
|
(void)snprintf(resp, sizeof(resp), "A%d\n", rval);
|
|
(void)write(STDOUT_FILENO, resp, strlen(resp));
|
|
(void)write(STDOUT_FILENO, (char *)&mtget, rval);
|
|
goto top;
|
|
}
|
|
|
|
default:
|
|
DEBUG1("rmtd: garbage command %c\n", c);
|
|
exit(3);
|
|
}
|
|
respond:
|
|
DEBUG1("rmtd: A %d\n", rval);
|
|
(void)snprintf(resp, sizeof(resp), "A%d\n", rval);
|
|
(void)write(STDOUT_FILENO, resp, strlen(resp));
|
|
goto top;
|
|
ioerror:
|
|
error(errno);
|
|
goto top;
|
|
}
|
|
|
|
void
|
|
getstring(bp, size)
|
|
char *bp;
|
|
size_t size;
|
|
{
|
|
char *cp = bp;
|
|
char *ep = bp + size - 1;
|
|
|
|
do {
|
|
if (read(STDIN_FILENO, cp, 1) != 1)
|
|
exit(0);
|
|
} while (*cp != '\n' && ++cp < ep);
|
|
*cp = '\0';
|
|
}
|
|
|
|
char *
|
|
checkbuf(record, size)
|
|
char *record;
|
|
int size;
|
|
{
|
|
|
|
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);
|
|
}
|
|
|
|
void
|
|
error(num)
|
|
int num;
|
|
{
|
|
|
|
DEBUG2("rmtd: E %d (%s)\n", num, strerror(num));
|
|
(void)snprintf(resp, sizeof(resp), "E%d\n%s\n", num, strerror(num));
|
|
(void)write(STDOUT_FILENO, resp, strlen(resp));
|
|
}
|