Updated the ch(4) driver and chio(1) command to include volume

tag support.  These changes have been tested with a Breeze Hill
Q47 DLT and a DEC DLT2500 media changer.  The latter has no
volume tag support.

The chio(1) command was updated to include various flags to the
status subcommand.  These flags can be used to select additional
information to be displayed (like volume tags).

A new chio(1) subcommand named 'voltag' has been added which allows
for changes to volume tags inside the media changer controller.
This could not be tested as the Q47 does not provide the functio-
nality.

Submitted by:	Hans Huebner

1 files changed, 79 insertions, 16 deletions

diff --git a/bin/chio/chio.1 b/bin/chio/chio.1
index 056c43a..e1cbad9 100644
--- a/bin/chio/chio.1
+++ b/bin/chio/chio.1
@@ -1,4 +1,4 @@
-.\"	$NetBSD: $
+.\"	$NetBSD: chio.1,v 1.4 1997/10/02 00:41:25 hubertf Exp $
 .\"
 .\" Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
 .\" All rights reserved.
@@ -30,18 +30,19 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$Id: chio.1,v 1.5 1998/05/06 06:49:52 charnier Exp $
+.\"	$Id: chio.1,v 1.6 1998/06/04 21:05:19 steve Exp $
 .\"
-.Dd April 2, 1996
+.Dd May 14, 1998
 .Dt CHIO 1
 .Os
 .Sh NAME
 .Nm chio
 .Nd medium changer control utility
 .Sh SYNOPSIS
-.Nm chio
+.Nm
 .Op Fl f Ar changer
 .Ar command
+.Op Fl <flags>
 .Ar arg1
 .Ar arg2
 .Oo
@@ -49,7 +50,7 @@
 .Oc
 .Oc
 .Sh DESCRIPTION
-.Nm Chio
+.Nm
 is used to control the operation of medium changers, such as those found
 in tape and optical disk jukeboxes.
 .Pp
@@ -92,7 +93,7 @@ would be
 .Pp
 .Sh SUPPORTED COMMANDS
 .Bl -tag -width indent
-.It Xo Nm chio move
+.It Xo Nm move
 .Ar <from ET> <from EU> <to ET> <to EU>
 .Op Ar inv
 .Xc
@@ -103,7 +104,7 @@ to
 If the optional modifier
 .Pa inv
 is specified, the media unit will be inverted before insertion.
-.It Xo Nm chio exchange
+.It Xo Nm exchange
 .Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
 .Op Ar <dst2 ET> <dst2 ET>
 .Op Ar inv1
@@ -133,10 +134,10 @@ and
 respectively.
 .Pp
 Note that not all medium changers support the
-.Nm exchange
+.Ic exchange
 operation; The changer must have multiple free pickers or emulate
 multiple free pickers with transient storage.
-.It Xo Nm chio position
+.It Xo Nm position
 .Ar <to ET> <to EU>
 .Op Ar inv
 .Xc
@@ -147,23 +148,82 @@ If the optional modifier
 is specified, the media unit will be inverted before insertion.
 .Pp
 Note that not all changers behave as expected when issued this command.
-.It Nm chio params
+.It Nm params
 Report the number of slots, drives, pickers, and portals in the changer,
 and which picker unit the changer is currently configured to use.
-.It Nm chio getpicker
+.It Nm getpicker
 Report which picker unit the changer is currently configured to use.
-.It Xo Nm chio setpicker
+.It Xo Nm setpicker
 .Ar <unit>
 .Xc
 Configure the changer to use picker
 .Pa <unit> .
-.It Xo Nm chio status
+.Pp
+.It Xo Nm ielem
+.Op Pa <timeout>
+.Xc
+Perform an \fBINITIALIZE ELEMENT STATUS\fR
+operation on the changer.  The optional
+.Pa <timeout>
+parameter may be given to specify a timeout in seconds for the
+operations.  This may be used if the operation takes unusually long
+because of buggy firmware or the like.
+.It Xo Nm voltag
+.Op Fl fca
+.Ar <ET>
+.Ar <EU>
+.Op Ar <label>
+.Op Ar <serial>
+.Xc
+Change volume tag for an element in the media changer.  This command
+is only supported by few media changers.  If it is not supported by a
+device, using this command will usually result in a "Invalid Field in
+CDB" error message on the console.
+.Pp
+If the 
+.Fl c
+flag is specified, the volume tag of the specified element is
+cleared.  If the
+.Fl f
+flag is specified, the volume tag is superceded with the specified
+volume tag even if a volume tag is already defined for the element.
+It is an error to not specify the
+.Fl f
+flag when trying to set a label for an element which already has
+volume tag information defined.
+.Pp
+The command works with the primary volume tag or, if the
+.Fl a
+flag is given, with the alternate volume tag.
+.It Xo Nm status
+.Op Fl vVsSbIa
 .Op Ar <type>
 .Xc
 Report the status of all elements in the changer.  If
 .Pa <type>
 is specified, report the status of all elements of type
 .Pa <type> .
+.It Fl v
+Print the primary volume tag for each loaded medium, if any.  The volume
+tag is printed as \fB<LABEL:SERIAL>\fR.
+.It Fl V
+Print the alternate volume tag for each loaded medium, if any.
+.It Fl s
+Print the additional sense code and additional sense code qualifier for
+each element.
+.It Fl S
+Print the element source address for each element.
+.It Fl b
+Print SCSI bus information for each element.  Note that this information
+is valid only for drives.
+.It Fl I
+Print the internal element addresses for each element.  The internal
+element address is not normally used with this driver.  It is reported
+for diagnostic purposes only.
+.It Fl a
+Print all additional information (as in
+.Fl vVsSba
+).
 .El
 .Pp
 The status bits are defined as follows:
@@ -181,6 +241,7 @@ Element supports passing media (exporting) to an outside human operator.
 .It INENAB
 Element supports receiving media (importing) from an outside human operator.
 .El
+.Pp
 .Sh EXAMPLES
 .Bl -tag -width indent
 .It Nm chio move slot 3 drive 0
@@ -195,11 +256,13 @@ default changer device
 .El
 .Sh SEE ALSO
 .Xr mt 1 ,
-.Xr ch 4 ,
-.Xr mount 8
+.Xr mount 8 .
 .Sh AUTHORS
 The
 .Nm
 program and SCSI changer driver were written by
 .An Jason R. Thorpe Aq thorpej@and.com
-for And Communications, http://www.and.com/
+for And Communications, http://www.and.com/.
+.br
+Additional work by
+.An Hans Huebner Aq hans@artcom.de