freebsd-dev/usr.bin/mt/mt.c
Joerg Wunsch 0ee7623d10 Implement "eod" as an alias for "eom". HP-UX uses this name, for
example.

Also cleaned up the man page a little.
1997-08-21 05:49:29 +00:00

443 lines
11 KiB
C

/*
* Copyright (c) 1980, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 5/4/95";
#endif
static const char rcsid[] =
"$Id: mt.c,v 1.12 1997/07/29 06:49:16 charnier Exp $";
#endif /* not lint */
/*
* mt --
* magnetic tape manipulation program
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mtio.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
#if defined(__FreeBSD__)
/* c_flags */
#define NEED_2ARGS 0x01
#define ZERO_ALLOWED 0x02
#define IS_DENSITY 0x04
#define DISABLE_THIS 0x08
#endif /* defined(__FreeBSD__) */
struct commands {
char *c_name;
int c_code;
int c_ronly;
#if defined(__FreeBSD__)
int c_flags;
#endif /* defined(__FreeBSD__) */
} com[] = {
{ "bsf", MTBSF, 1 },
{ "bsr", MTBSR, 1 },
#if defined(__FreeBSD__)
/* XXX FreeBSD considered "eof" dangerous, since it's being
confused with "eom" (and is an alias for "weof" anyway) */
{ "eof", MTWEOF, 0, DISABLE_THIS },
#else
{ "eof", MTWEOF, 0 },
#endif
{ "fsf", MTFSF, 1 },
{ "fsr", MTFSR, 1 },
{ "offline", MTOFFL, 1 },
{ "rewind", MTREW, 1 },
{ "rewoffl", MTOFFL, 1 },
{ "status", MTNOP, 1 },
{ "weof", MTWEOF, 0 },
#if defined(__FreeBSD__)
{ "erase", MTERASE, 0 },
{ "blocksize", MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
{ "density", MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED|IS_DENSITY },
{ "eom", MTEOD, 1 },
{ "eod", MTEOD, 1 },
{ "comp", MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED },
{ "retension", MTRETENS, 1 },
#endif /* defined(__FreeBSD__) */
{ NULL }
};
void printreg __P((char *, u_int, char *));
void status __P((struct mtget *));
void usage __P((void));
#if defined (__FreeBSD__)
void st_status (struct mtget *);
int stringtodens (const char *s);
const char *denstostring (int d);
void warn_eof __P((void));
#endif /* defined (__FreeBSD__) */
int
main(argc, argv)
int argc;
char *argv[];
{
register struct commands *comp;
struct mtget mt_status;
struct mtop mt_com;
int ch, len, mtfd;
char *p, *tape;
if ((tape = getenv("TAPE")) == NULL)
tape = DEFTAPE;
while ((ch = getopt(argc, argv, "f:t:")) != -1)
switch(ch) {
case 'f':
case 't':
tape = optarg;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc < 1 || argc > 2)
usage();
len = strlen(p = *argv++);
for (comp = com;; comp++) {
if (comp->c_name == NULL)
errx(1, "%s: unknown command", p);
if (strncmp(p, comp->c_name, len) == 0)
break;
}
#if defined(__FreeBSD__)
if((comp->c_flags & NEED_2ARGS) && argc != 2)
usage();
if(comp->c_flags & DISABLE_THIS) {
warn_eof();
}
#endif /* defined(__FreeBSD__) */
if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
err(1, "%s", tape);
if (comp->c_code != MTNOP) {
mt_com.mt_op = comp->c_code;
if (*argv) {
#if defined (__FreeBSD__)
if (!isdigit(**argv) &&
comp->c_flags & IS_DENSITY) {
const char *dcanon;
mt_com.mt_count = stringtodens(*argv);
if (mt_com.mt_count == 0)
errx(1, "%s: unknown density", *argv);
dcanon = denstostring(mt_com.mt_count);
if (strcmp(dcanon, *argv) != 0)
printf(
"Using \"%s\" as an alias for %s\n",
*argv, dcanon);
p = "";
} else
/* allow for hex numbers; useful for density */
mt_com.mt_count = strtol(*argv, &p, 0);
#else
mt_com.mt_count = strtol(*argv, &p, 10);
#endif /* defined(__FreeBSD__) */
if (mt_com.mt_count <=
#if defined (__FreeBSD__)
((comp->c_flags & ZERO_ALLOWED)? -1: 0)
#else
0
#endif /* defined (__FreeBSD__) */
|| *p)
errx(1, "%s: illegal count", *argv);
}
else
mt_com.mt_count = 1;
if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
err(1, "%s: %s", tape, comp->c_name);
} else {
if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
err(1, NULL);
status(&mt_status);
}
exit (0);
/* NOTREACHED */
}
#ifdef vax
#include <vax/mba/mtreg.h>
#include <vax/mba/htreg.h>
#include <vax/uba/utreg.h>
#include <vax/uba/tmreg.h>
#undef b_repcnt /* argh */
#include <vax/uba/tsreg.h>
#endif
#ifdef sun
#include <sundev/tmreg.h>
#include <sundev/arreg.h>
#endif
#ifdef tahoe
#include <tahoe/vba/cyreg.h>
#endif
#ifdef __FreeBSD__
#include <machine/wtio.h>
#endif
struct tape_desc {
short t_type; /* type of magtape device */
char *t_name; /* printing name */
char *t_dsbits; /* "drive status" register */
char *t_erbits; /* "error" register */
} tapes[] = {
#ifdef vax
{ MT_ISTS, "ts11", 0, TSXS0_BITS },
{ MT_ISHT, "tm03", HTDS_BITS, HTER_BITS },
{ MT_ISTM, "tm11", 0, TMER_BITS },
{ MT_ISMT, "tu78", MTDS_BITS, 0 },
{ MT_ISUT, "tu45", UTDS_BITS, UTER_BITS },
#endif
#ifdef sun
{ MT_ISCPC, "TapeMaster", TMS_BITS, 0 },
{ MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS },
#endif
#ifdef tahoe
{ MT_ISCY, "cipher", CYS_BITS, CYCW_BITS },
#endif
#if defined (__FreeBSD__)
/*
* XXX This is weird. The st driver reports the tape drive
* as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
* either reports MT_ISVIPER1 for an Archive tape, or 0x11
* (MT_ISMFOUR) for other tapes.
* XXX for the wt driver, rely on it behaving like a "standard"
* magtape driver.
*/
{ MT_ISAR, "SCSI tape drive", 0, 0 },
{ MT_ISVIPER1, "Archive Viper", WTDS_BITS, WTER_BITS },
{ MT_ISMFOUR, "Wangtek", WTDS_BITS, WTER_BITS },
#endif /* defined (__FreeBSD__) */
{ 0 }
};
/*
* Interpret the status buffer returned
*/
void
status(bp)
register struct mtget *bp;
{
register struct tape_desc *mt;
for (mt = tapes;; mt++) {
if (mt->t_type == 0) {
(void)printf("%d: unknown tape drive type\n",
bp->mt_type);
return;
}
if (mt->t_type == bp->mt_type)
break;
}
#if defined (__FreeBSD__)
if(mt->t_type == MT_ISAR)
st_status(bp);
else {
#endif /* defined (__FreeBSD__) */
(void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
printreg("ds", (unsigned short)bp->mt_dsreg, mt->t_dsbits);
printreg("\ner", (unsigned short)bp->mt_erreg, mt->t_erbits);
(void)putchar('\n');
#if defined (__FreeBSD__)
}
#endif /* defined (__FreeBSD__) */
}
/*
* Print a register a la the %b format of the kernel's printf.
*/
void
printreg(s, v, bits)
char *s;
register u_int v;
register char *bits;
{
register int i, any = 0;
register char c;
if (bits && *bits == 8)
printf("%s=%o", s, v);
else
printf("%s=%x", s, v);
if (!bits)
return;
bits++;
if (v && bits) {
putchar('<');
while ((i = *bits++)) {
if (v & (1 << (i-1))) {
if (any)
putchar(',');
any = 1;
for (; (c = *bits) > 32; bits++)
putchar(c);
} else
for (; *bits > 32; bits++)
;
}
putchar('>');
}
}
void
usage()
{
(void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
exit(1);
}
#if defined (__FreeBSD__)
struct densities {
int dens;
const char *name;
} dens [] = {
{ 0x1, "X3.22-1983" },
{ 0x2, "X3.39-1986" },
{ 0x3, "X3.54-1986" },
{ 0x5, "X3.136-1986" },
{ 0x6, "X3.157-1987" },
{ 0x7, "X3.116-1986" },
{ 0x8, "X3.158-1986" },
{ 0x9, "X3B5/87-099" },
{ 0xA, "X3B5/86-199" },
{ 0xB, "X3.56-1986" },
{ 0xC, "HI-TC1" },
{ 0xD, "HI-TC2" },
{ 0xF, "QIC-120" },
{ 0x10, "QIC-150" },
{ 0x11, "QIC-320" },
{ 0x12, "QIC-1350" },
{ 0x13, "X3B5/88-185A" },
{ 0x14, "X3.202-1991" },
{ 0x15, "ECMA TC17" },
{ 0x16, "X3.193-1990" },
{ 0x17, "X3B5/91-174" },
{ 0, 0 }
};
const char *
denstostring(int d)
{
static char buf[20];
struct densities *sd;
for (sd = dens; sd->dens; sd++)
if (sd->dens == d)
break;
if (sd->dens == 0) {
sprintf(buf, "0x%02x", d);
return buf;
} else
return sd->name;
}
int
stringtodens(const char *s)
{
struct densities *sd;
size_t l = strlen(s);
for (sd = dens; sd->dens; sd++)
if (strncasecmp(sd->name, s, l) == 0)
break;
return sd->dens;
}
const char *
getblksiz(int bs)
{
static char buf[25];
if (bs == 0)
return "variable";
else {
sprintf(buf, "= %d bytes", bs);
return buf;
}
}
void
st_status(struct mtget *bp)
{
printf("Present Mode: Density = %-12s Blocksize %s\n",
denstostring(bp->mt_density), getblksiz(bp->mt_blksiz));
printf("---------available modes---------\n");
printf("Mode 0: Density = %-12s Blocksize %s\n",
denstostring(bp->mt_density0), getblksiz(bp->mt_blksiz0));
printf("Mode 1: Density = %-12s Blocksize %s\n",
denstostring(bp->mt_density1), getblksiz(bp->mt_blksiz1));
printf("Mode 2: Density = %-12s Blocksize %s\n",
denstostring(bp->mt_density2), getblksiz(bp->mt_blksiz2));
printf("Mode 3: Density = %-12s Blocksize %s\n",
denstostring(bp->mt_density3), getblksiz(bp->mt_blksiz3));
}
void
warn_eof(void)
{
fprintf(stderr,
"The \"eof\" command has been disabled.\n"
"Use \"weof\" if you really want to write end-of-file marks,\n"
"or \"eom\" if you rather want to skip to the end of "
"recorded medium.\n");
exit(1);
}
#endif /* defined (__FreeBSD__) */