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Import Jason Thorpe's contribution for an updated SCSI media changer

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device (now, finally!).
This commit is contained in:
Joerg Wunsch 1997-03-06 15:30:06 +00:00
parent b95c15c20f
commit 224c8a5b9b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor/jthorpe/dist/; revision=23449
5 changed files with 966 additions and 0 deletions
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bin/chio/Makefile Normal file
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# $Id: $
# @(#)Makefile 8.1 (Berkeley) 6/6/93
PROG= chio
SRCS= chio.c
BINOWN= root
BINMODE=4555
.include <bsd.prog.mk>

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.\" $NetBSD: $
.\"
.\" Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
.\" 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 acknowledgements:
.\" This product includes software developed by Jason R. Thorpe
.\" for And Communications, http://www.and.com/
.\" 4. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
.\"
.Dd April 2, 1996
.Dt CHIO 1
.Os
.Sh NAME
.Nm chio
.Nd medium changer control utility
.Sh SYNOPSIS
.Nm chio
.Op Fl f Ar changer
.Ar command
.Ar arg1
.Ar arg2
.Oo
.Ar arg3 Oo ...
.Oc
.Oc
.Sh DESCRIPTION
.Nm Chio
is used to control the operation of medium changers, such as those found
in tape and optical disk jukeboxes.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl f Ar changer
Use the device
.Pa changer
rather than the default device
.Pa /dev/ch0 .
.El
.Pp
The default changer may be overridden by setting the environment variable
.Nm CHANGER
to the desired changer device.
.Pp
A medium changer apparatus is made up of
.Pa elements .
There are four element types:
.Pa picker
(medium transport),
.Pa slot
(storage),
.Pa portal
(import/export), and
.Pa drive
(data transfer). In this command description, the shorthand
.Nm ET
will be used to represent an element type, and
.Nm EU
will be used to represent an element unit. For example, to represent
the first robotic arm in the changer, the ET would be
.Dq picker
and the EU would be
.Dq 0 .
.Pp
.Sh SUPPORTED COMMANDS
.Nm chio move
.Ar <from ET> <from EU> <to ET> <to EU>
.Op Ar inv
.Pp
Moves the media unit from
.Pa <from ET/EU>
to
.Pa <to ET/EU> .
If the optional modifier
.Pa inv
is specified, the media unit will be inverted before insertion.
.Pp
.Nm chio exchange
.Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
.Op Ar <dst2 ET> <dst2 ET>
.Op Ar inv1
.Op Ar inv2
.Pp
Performs a media unit exchange operation. The media unit in
.Pa <src ET/EU>
is moved to
.Pa <dst1 ET/EU>
and the media unit previously in
.Pa <dst1 ET/EU>
is moved to
.Pa <dst2 ET/EU> .
In the case of a simple exchange,
.Pa <dst2 ET/EU>
is omitted and the values
.Pa <src ET/EU>
are used in their place.
The optional modifiers
.Pa inv1
and
.Pa inv2
specify whether the media units are to be inverted before insertion into
.Pa <dst1 ET/EU>
and
.Pa <dst2 ET/EU>
respecitively.
.Pp
Note that not all medium changers support the
.Nm exchange
operation; The changer must have multiple free pickers or emulate
multiple free pickers with transient storage.
.Pp
.Nm chio position
.Ar <to ET> <to EU>
.Op Ar inv
.Pp
Position the picker in front of the element described by
.Pa <to ET/EU> .
If the optional modifier
.Pa inv
is specified, the media unit will be inverted before insertion.
.Pp
Note that not all changers behave as expected when issued this command.
.Pp
.Nm chio params
.Pp
Report the number of slots, drives, pickers, and portals in the changer,
and which picker unit the changer is currently configured to use.
.Pp
.Nm chio getpicker
.Pp
Report which picker unit the changer is currently configured to use.
.Pp
.Nm chio setpicker
.Ar <unit>
.Pp
Configure the changer to use picker
.Pa <unit> .
.Pp
.Nm chio status
.Op Ar <type>
.Pp
Report the status of all elements in the changer. If
.Pa <type>
is specified, report the status of all elements of type
.Pa <type> .
.Pp
The status bits are defined as follows:
.Bl -tag -width indent
.It Nm FULL
Element contains a media unit.
.It Nm IMPEXP
Media was deposited into element by an outside human operator.
.It Nm EXCEPT
Element is in an abnormal state.
.It Nm ACCESS
Media in this element is accessible by a picker.
.It Nm EXENAB
Element supports passing media (exporting) to an outsite human operator.
.It Nm INENAB
Element supports receiving media (importing) from an outside human operator.
.El
.Pp
.Sh EXAMPLES
.Nm chio move slot 3 drive 0
.Pp
Moves the media in slot 3 (fourth slot) to drive 0 (first drive).
.Pp
.Nm chio setpicker 2
Configures the changer to use picker 2 (third picker) for operations.
.Pp
.Sh FILES
/dev/ch0 - default changer device
.Sh SEE ALSO
.Xr mt 1 ,
.Xr mount 8 .
.Sh AUTHOR
The
.Nm chio
program and SCSI changer driver were written by Jason R. Thorpe
<thorpej@and.com> for And Communications, http://www.and.com/

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/* $Id: $ */
/*
* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
* 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 acknowledgements:
* This product includes software developed by Jason R. Thorpe
* for And Communications, http://www.and.com/
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/ioctl.h>
#include <sys/chio.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defs.h"
#include "pathnames.h"
extern char *__progname; /* from crt0.o */
static void usage __P((void));
static void cleanup __P((void));
static int parse_element_type __P((char *));
static int parse_element_unit __P((char *));
static int parse_special __P((char *));
static int is_special __P((char *));
static char *bits_to_string __P((int, const char *));
static int do_move __P((char *, int, char **));
static int do_exchange __P((char *, int, char **));
static int do_position __P((char *, int, char **));
static int do_params __P((char *, int, char **));
static int do_getpicker __P((char *, int, char **));
static int do_setpicker __P((char *, int, char **));
static int do_status __P((char *, int, char **));
/* Valid changer element types. */
const struct element_type elements[] = {
{ "picker", CHET_MT },
{ "slot", CHET_ST },
{ "portal", CHET_IE },
{ "drive", CHET_DT },
{ NULL, 0 },
};
/* Valid commands. */
const struct changer_command commands[] = {
{ "move", do_move },
{ "exchange", do_exchange },
{ "position", do_position },
{ "params", do_params },
{ "getpicker", do_getpicker },
{ "setpicker", do_setpicker },
{ "status", do_status },
{ NULL, 0 },
};
/* Valid special words. */
const struct special_word specials[] = {
{ "inv", SW_INVERT },
{ "inv1", SW_INVERT1 },
{ "inv2", SW_INVERT2 },
{ NULL, 0 },
};
static int changer_fd;
static char *changer_name;
int
main(argc, argv)
int argc;
char **argv;
{
int ch, i;
char *cp;
while ((ch = getopt(argc, argv, "f:")) != -1) {
switch (ch) {
case 'f':
changer_name = optarg;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc == 0)
usage();
/* Get the default changer if not already specified. */
if (changer_name == NULL)
if ((changer_name = getenv(CHANGER_ENV_VAR)) == NULL)
changer_name = _PATH_CH;
/* Open the changer device. */
if ((changer_fd = open(changer_name, O_RDWR, 0600)) == -1)
err(1, "%s: open", changer_name);
/* Register cleanup function. */
if (atexit(cleanup))
err(1, "can't register cleanup function");
/* Find the specified command. */
for (i = 0; commands[i].cc_name != NULL; ++i)
if (strcmp(*argv, commands[i].cc_name) == 0)
break;
if (commands[i].cc_name == NULL)
errx(1, "unknown command: %s", *argv);
/* Skip over the command name and call handler. */
++argv; --argc;
exit ((*commands[i].cc_handler)(commands[i].cc_name, argc, argv));
}
static int
do_move(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_move cmd;
int val;
/*
* On a move command, we expect the following:
*
* <from ET> <from EU> <to ET> <to EU> [inv]
*
* where ET == element type and EU == element unit.
*/
if (argc < 4) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 5) {
warnx("%s: too many arguments", cname);
goto usage;
}
bzero(&cmd, sizeof(cmd));
/* <from ET> */
cmd.cm_fromtype = parse_element_type(*argv);
++argv; --argc;
/* <from EU> */
cmd.cm_fromunit = parse_element_unit(*argv);
++argv; --argc;
/* <to ET> */
cmd.cm_totype = parse_element_type(*argv);
++argv; --argc;
/* <to EU> */
cmd.cm_tounit = parse_element_unit(*argv);
++argv; --argc;
/* Deal with optional command modifier. */
if (argc) {
val = parse_special(*argv);
switch (val) {
case SW_INVERT:
cmd.cm_flags |= CM_INVERT;
break;
default:
errx(1, "%s: inappropriate modifier `%s'",
cname, *argv);
/* NOTREACHED */
}
}
/* Send command to changer. */
if (ioctl(changer_fd, CHIOMOVE, (char *)&cmd))
err(1, "%s: CHIOMOVE", changer_name);
return (0);
usage:
fprintf(stderr, "usage: %s %s "
"<from ET> <from EU> <to ET> <to EU> [inv]\n", __progname, cname);
return (1);
}
static int
do_exchange(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_exchange cmd;
int val;
/*
* On an exchange command, we expect the following:
*
* <src ET> <src EU> <dst1 ET> <dst1 EU> [<dst2 ET> <dst2 EU>] [inv1] [inv2]
*
* where ET == element type and EU == element unit.
*/
if (argc < 4) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 8) {
warnx("%s: too many arguments", cname);
goto usage;
}
bzero(&cmd, sizeof(cmd));
/* <src ET> */
cmd.ce_srctype = parse_element_type(*argv);
++argv; --argc;
/* <src EU> */
cmd.ce_srcunit = parse_element_unit(*argv);
++argv; --argc;
/* <dst1 ET> */
cmd.ce_fdsttype = parse_element_type(*argv);
++argv; --argc;
/* <dst1 EU> */
cmd.ce_fdstunit = parse_element_unit(*argv);
++argv; --argc;
/*
* If the next token is a special word or there are no more
* arguments, then this is a case of simple exchange.
* dst2 == src.
*/
if ((argc == 0) || is_special(*argv)) {
cmd.ce_sdsttype = cmd.ce_srctype;
cmd.ce_sdstunit = cmd.ce_srcunit;
goto do_special;
}
/* <dst2 ET> */
cmd.ce_sdsttype = parse_element_type(*argv);
++argv; --argc;
/* <dst2 EU> */
cmd.ce_sdstunit = parse_element_unit(*argv);
++argv; --argc;
do_special:
/* Deal with optional command modifiers. */
while (argc) {
val = parse_special(*argv);
++argv; --argc;
switch (val) {
case SW_INVERT1:
cmd.ce_flags |= CE_INVERT1;
break;
case SW_INVERT2:
cmd.ce_flags |= CE_INVERT2;
break;
default:
errx(1, "%s: inappropriate modifier `%s'",
cname, *argv);
/* NOTREACHED */
}
}
/* Send command to changer. */
if (ioctl(changer_fd, CHIOEXCHANGE, (char *)&cmd))
err(1, "%s: CHIOEXCHANGE", changer_name);
return (0);
usage:
fprintf(stderr, "usage: %s %s <src ET> <src EU> <dst1 ET> <dst1 EU>\n"
" [<dst2 ET> <dst2 EU>] [inv1] [inv2]\n",
__progname, cname);
return (1);
}
static int
do_position(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_position cmd;
int val;
/*
* On a position command, we expect the following:
*
* <to ET> <to EU> [inv]
*
* where ET == element type and EU == element unit.
*/
if (argc < 2) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 3) {
warnx("%s: too many arguments", cname);
goto usage;
}
bzero(&cmd, sizeof(cmd));
/* <to ET> */
cmd.cp_type = parse_element_type(*argv);
++argv; --argc;
/* <to EU> */
cmd.cp_unit = parse_element_unit(*argv);
++argv; --argc;
/* Deal with optional command modifier. */
if (argc) {
val = parse_special(*argv);
switch (val) {
case SW_INVERT:
cmd.cp_flags |= CP_INVERT;
break;
default:
errx(1, "%s: inappropriate modifier `%s'",
cname, *argv);
/* NOTREACHED */
}
}
/* Send command to changer. */
if (ioctl(changer_fd, CHIOPOSITION, (char *)&cmd))
err(1, "%s: CHIOPOSITION", changer_name);
return (0);
usage:
fprintf(stderr, "usage: %s %s <to ET> <to EU> [inv]\n",
__progname, cname);
return (1);
}
static int
do_params(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_params data;
/* No arguments to this command. */
if (argc) {
warnx("%s: no arguements expected", cname);
goto usage;
}
/* Get params from changer and display them. */
bzero(&data, sizeof(data));
if (ioctl(changer_fd, CHIOGPARAMS, (char *)&data))
err(1, "%s: CHIOGPARAMS", changer_name);
printf("%s: %d slot%s, %d drive%s, %d picker%s",
changer_name,
data.cp_nslots, (data.cp_nslots > 1) ? "s" : "",
data.cp_ndrives, (data.cp_ndrives > 1) ? "s" : "",
data.cp_npickers, (data.cp_npickers > 1) ? "s" : "");
if (data.cp_nportals)
printf(", %d portal%s", data.cp_nportals,
(data.cp_nportals > 1) ? "s" : "");
printf("\n%s: current picker: %d\n", changer_name, data.cp_curpicker);
return (0);
usage:
fprintf(stderr, "usage: %s %s\n", __progname, cname);
return (1);
}
static int
do_getpicker(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
int picker;
/* No arguments to this command. */
if (argc) {
warnx("%s: no arguments expected", cname);
goto usage;
}
/* Get current picker from changer and display it. */
if (ioctl(changer_fd, CHIOGPICKER, (char *)&picker))
err(1, "%s: CHIOGPICKER", changer_name);
printf("%s: current picker: %d\n", changer_name, picker);
return (0);
usage:
fprintf(stderr, "usage: %s %s\n", __progname, cname);
return (1);
}
static int
do_setpicker(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
int picker;
if (argc < 1) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 1) {
warnx("%s: too many arguments", cname);
goto usage;
}
picker = parse_element_unit(*argv);
/* Set the changer picker. */
if (ioctl(changer_fd, CHIOSPICKER, (char *)&picker))
err(1, "%s: CHIOSPICKER", changer_name);
return (0);
usage:
fprintf(stderr, "usage: %s %s <picker>\n", __progname, cname);
return (1);
}
static int
do_status(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_element_status cmd;
struct changer_params data;
u_int8_t *statusp;
int i, count, chet, schet, echet;
char *cmdname, *description;
/*
* On a status command, we expect the following:
*
* [<ET>]
*
* where ET == element type.
*
* If we get no arguments, we get the status of all
* known element types.
*/
if (argc > 1) {
warnx("%s: too many arguments", cname);
goto usage;
}
/*
* Get params from changer. Specifically, we need the element
* counts.
*/
bzero(&data, sizeof(data));
if (ioctl(changer_fd, CHIOGPARAMS, (char *)&data))
err(1, "%s: CHIOGPARAMS", changer_name);
if (argc)
schet = echet = parse_element_type(*argv);
else {
schet = CHET_MT;
echet = CHET_DT;
}
for (chet = schet; chet <= echet; ++chet) {
switch (chet) {
case CHET_MT:
count = data.cp_npickers;
description = "picker";
break;
case CHET_ST:
count = data.cp_nslots;
description = "slot";
break;
case CHET_IE:
count = data.cp_nportals;
description = "portal";
break;
case CHET_DT:
count = data.cp_ndrives;
description = "drive";
break;
}
if (count == 0) {
if (argc == 0)
continue;
else {
printf("%s: no %s elements\n",
changer_name, description);
return (0);
}
}
/* Allocate storage for the status bytes. */
if ((statusp = (u_int8_t *)malloc(count)) == NULL)
errx(1, "can't allocate status storage");
bzero(statusp, count);
bzero(&cmd, sizeof(cmd));
cmd.ces_type = chet;
cmd.ces_data = statusp;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cmd)) {
free(statusp);
err(1, "%s: CHIOGSTATUS", changer_name);
}
/* Dump the status for each element of this type. */
for (i = 0; i < count; ++i) {
printf("%s %d: %s\n", description, i,
bits_to_string(statusp[i], CESTATUS_BITS));
}
free(statusp);
}
return (0);
usage:
fprintf(stderr, "usage: %s %s [<element type>]\n", __progname,
cname);
return (1);
}
static int
parse_element_type(cp)
char *cp;
{
int i;
for (i = 0; elements[i].et_name != NULL; ++i)
if (strcmp(elements[i].et_name, cp) == 0)
return (elements[i].et_type);
errx(1, "invalid element type `%s'", cp);
}
static int
parse_element_unit(cp)
char *cp;
{
int i;
char *p;
i = (int)strtol(cp, &p, 10);
if ((i < 0) || (*p != '\0'))
errx(1, "invalid unit number `%s'", cp);
return (i);
}
static int
parse_special(cp)
char *cp;
{
int val;
val = is_special(cp);
if (val)
return (val);
errx(1, "invalid modifier `%s'", cp);
}
static int
is_special(cp)
char *cp;
{
int i;
for (i = 0; specials[i].sw_name != NULL; ++i)
if (strcmp(specials[i].sw_name, cp) == 0)
return (specials[i].sw_value);
return (0);
}
static char *
bits_to_string(v, cp)
int v;
const char *cp;
{
const char *np;
char f, sep, *bp;
static char buf[128];
bp = buf;
bzero(buf, sizeof(buf));
for (sep = '<'; (f = *cp++) != 0; cp = np) {
for (np = cp; *np >= ' ';)
np++;
if ((v & (1 << (f - 1))) == 0)
continue;
bp += sprintf(bp, "%c%.*s", sep, np - cp, cp);
sep = ',';
}
if (sep != '<')
*bp = '>';
return (buf);
}
static void
cleanup()
{
/* Simple enough... */
(void)close(changer_fd);
}
static void
usage()
{
fprintf(stderr, "usage: %s command arg1 arg2 ...\n", __progname);
exit(1);
}

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/* $Id: $ */
/*
* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
* 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 acknowledgements:
* This product includes software developed by Jason R. Thorpe
* for And Communications, http://www.and.com/
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
struct element_type {
char *et_name; /* name; i.e. "picker, "slot", etc. */
int et_type; /* type number */
};
struct changer_command {
char *cc_name; /* command name */
/* command handler */
int (*cc_handler) __P((char *, int, char **));
};
struct special_word {
char *sw_name; /* special word */
int sw_value; /* token value */
};
/* sw_value */
#define SW_INVERT 1 /* set "invert media" flag */
#define SW_INVERT1 2 /* set "invert media 1" flag */
#define SW_INVERT2 3 /* set "invert media 2" flag */
/* Environment variable to check for default changer. */
#define CHANGER_ENV_VAR "CHANGER"

35
bin/chio/pathnames.h Normal file
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@ -0,0 +1,35 @@
/* $Id: $ */
/*
* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
* 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 acknowledgements:
* This product includes software developed by Jason R. Thorpe
* for And Communications, http://www.and.com/
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#define _PATH_CH "/dev/ch0"