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diff --git a/share/man/man4/man4.vax/mtio.4 b/share/man/man4/man4.vax/mtio.4 new file mode 100644 index 00000000000..369d2b73078 --- /dev/null +++ b/share/man/man4/man4.vax/mtio.4 @@ -0,0 +1,235 @@ +.\" Copyright (c) 1983, 1991 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. +.\" +.\" from: @(#)mtio.4 6.5 (Berkeley) 3/27/91 +.\" $Id: mtio.4,v 1.1 1995/10/18 08:44:35 deraadt Exp $ +.\" +.Dd March 27, 1991 +.Dt MTIO 4 vax +.Os BSD 4.2 +.Sh NAME +.Nm mtio +.Nd +.Tn UNIX +magtape interface +.Sh DESCRIPTION +The special files +named +.Pa /dev/mt0 +and +.Pa /dev/rmt0 +through +.Pa /dev/mt23 +and +.Pa /dev/rmt23 +refer to +.Tn UNIX +magtape drives, +which may be on the +.Tn MASSBUS +using the +.Tn TM03 +formatter +.Xr ht 4 , +or +.Tn TM78 +formatter, +.Xr mt 4 , +or on the +.Tn UNIBUS +using either the +.Tn TM11 +or +.Tn TS11 +formatters +.Xr tm 4 , +.Tn TU45 +compatible formatters, +.Xr ut 4 , +or +.Xr ts 4 . +These devices are typical tape block devices, +see +.Xr physio 4 . +.Pp +The following table of the converntional device names +is applicable to any of the transport/controller pairs. +(But note that only 1600 +.Tn BPI +is available with the +.Tn TS11 . ) +.Bl -column "no-rewindxxx" "or lowest densityxx" "or lowest densityxx" "or lowest densityxx" -offset indent + 800 BPI 1600 BPI 6500 BPI +.Em or lowest density or second density or third density + +Rewind mt0/rmt0 mt8/rmt8 mt16/rmt16 +Rewind mt1/rmt1 mt9/rmt9 mt17/rmt17 +Rewind mt2/rmt2 mt10/rmt10 mt18/rmt18 +Rewind mt3/rmt3 mt11/rmt11 mt19/rmt19 +No-rewind nmt4/nrmt4 nmt12/nrmt12 nmt20/nrmt20 +No-rewind nmt5/nrmt5 nmt13/nrmt13 nmt21/nrmt21 +No-rewind nmt6/nrmt6 nmt14/nrmt14 nmt22/nrmt22 +No-rewind nmt7/nrmt7 nmt15/nrmt15 nmt23/nrmt32 +.El +.Pp +The rewind devices automatically rewind +when the last requested read, write or seek has finished, or the end of the tape +has been reached. The letter +.Ql n +is usually prepended to +the name of the no-rewind devices. +.Pp +Unix tapes are written in multiples of 1024 byte block +records. Two end-of-file markers mark the end of a tape, and +one end-of-file marker marks the end of a tape file. +If the tape is not to be rewound it is positioned with the +head in between the two tape marks, where the next write +will over write the second end-of-file marker. +.Pp +All of the magtape devices may be manipulated with the +.Xr mt 1 +command. +.Pp +A number of +.Xr ioctl 2 +operations are available +on raw magnetic tape. +The following definitions are from +.Aq Pa sys/mtio.h : +.Bd -literal +/* + * Structures and definitions for mag tape io control commands + */ + +/* structure for MTIOCTOP - mag tape op command */ +struct mtop { + short mt_op; /* operations defined below */ + daddr_t mt_count; /* how many of them */ +}; + +/* operations */ +#define MTWEOF 0 /* write an end-of-file record */ +#define MTFSF 1 /* forward space file */ +#define MTBSF 2 /* backward space file */ +#define MTFSR 3 /* forward space record */ +#define MTBSR 4 /* backward space record */ +#define MTREW 5 /* rewind */ +#define MTOFFL 6 /* rewind and put the drive offline */ +#define MTNOP 7 /* no operation, sets status only */ +#define MTCACHE 8 /* enable controller cache */ +#define MTNOCACHE 9 /* disable controller cache */ + +/* structure for MTIOCGET - mag tape get status command */ + +struct mtget { + short mt_type; /* type of magtape device */ +/* the following two registers are grossly device dependent */ + short mt_dsreg; /* ``drive status'' register */ + short mt_erreg; /* ``error'' register */ +/* end device-dependent registers */ + short mt_resid; /* residual count */ +/* the following two are not yet implemented */ + daddr_t mt_fileno; /* file number of current position */ + daddr_t mt_blkno; /* block number of current position */ +/* end not yet implemented */ +}; + +/* + * Constants for mt_type byte. These are the same + * for controllers compatible with the types listed. + */ +#define MT_ISTS 0x01 /* TS-11 */ +#define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */ +#define MT_ISTM 0x03 /* TM11/TE10 Unibus */ +#define MT_ISMT 0x04 /* TM78/TU78 Massbus */ +#define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */ +#define MT_ISCPC 0x06 /* SUN */ +#define MT_ISAR 0x07 /* SUN */ +#define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */ +#define MT_ISCY 0x09 /* CCI Cipher */ +#define MT_ISCT 0x0a /* HP 1/4 tape */ +#define MT_ISFHP 0x0b /* HP 7980 1/2 tape */ +#define MT_ISEXABYTE 0x0c /* Exabyte */ +#define MT_ISEXA8200 0x0c /* Exabyte EXB-8200 */ +#define MT_ISEXA8500 0x0d /* Exabyte EXB-8500 */ +#define MT_ISVIPER1 0x0e /* Archive Viper-150 */ +#define MT_ISPYTHON 0x0f /* Archive Python (DAT) */ +#define MT_ISHPDAT 0x10 /* HP 35450A DAT drive */ + +/* mag tape io control commands */ +#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */ +#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */ +#define MTIOCIEOT _IO('m', 3) /* ignore EOT error */ +#define MTIOCEEOT _IO('m', 4) /* enable EOT error */ + +#ifndef KERNEL +#define DEFTAPE "/dev/rmt12" +#endif + +#ifdef KERNEL +/* + * minor device number + */ + +#define T_UNIT 003 /* unit selection */ +#define T_NOREWIND 004 /* no rewind on close */ +#define T_DENSEL 030 /* density select */ +#define T_800BPI 000 /* select 800 bpi */ +#define T_1600BPI 010 /* select 1600 bpi */ +#define T_6250BPI 020 /* select 6250 bpi */ +#define T_BADBPI 030 /* undefined selection */ +#endif +.Ed +.Pp +.Sh FILES +.Bl -tag -width /dev/rmt? -compact +.It Pa /dev/mt? +.It Pa /dev/rmt? +.El +.Sh SEE ALSO +.Xr mt 1 , +.Xr tar 1 , +.Xr tp 1 , +.Xr ht 4 , +.Xr tm 4 , +.Xr ts 4 , +.Xr mt 4 , +.Xr ut 4 +.Sh HISTORY +The +.Nm mtio +manual appeared in +.Bx 4.2 . +.Sh BUGS +The status should be returned in a device independent format. +.Pp +The special file naming should be redone in a more consistent and +understandable manner. |