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freebsd-skq/bin/chio/chio.c
ken 91f91457a7 Add two new features to chio(1): 
- The ability to specify elements by volume tag instead of their actual
   physical location.  e.g., instead of:
	chio move slot 3 slot 4
   you would now use:
	chio move voltag FOO slot 4

 - The ability to return an element to its previous location, as specified
   by the source element.  e.g., instead of:
	chio move drive 0 slot 4
   you would now use:
	chio return drive 0
   or
	chio return voltag FOO

These features will obviously only work with changers that support volume
tags and/or source element IDs.  chio(1) should fail gracefully if the user
attempts to use these new features and the source element ID or volume tag
are not found.

PR:		bin/21178
Submitted by:	"C. Stephen Gunn" <csg@waterspout.com>
Reviewed by:	ken
2000-09-18 06:09:11 +00:00

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/* $NetBSD: chio.c,v 1.6 1998/01/04 23:53:58 thorpej Exp $ */
/*
* 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.
*/
/*
* Additional Copyright (c) 1997, by Matthew Jacob, for NASA/Ames Research Ctr.
* Addidional Copyright (c) 2000, by C. Stephen Gunn, Waterspout Communications
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1996 Jason R. Thorpe. All rights reserved.";
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/chio.h>
#include <err.h>
#include <fcntl.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 const char * element_type_name __P((int et));
static int parse_special __P((char *));
static int is_special __P((char *));
static const char *bits_to_string __P((int, const char *));
static void find_element __P((char *, u_int16_t *, u_int16_t *));
static struct changer_element_status *get_element_status __P((u_int16_t, u_int16_t));
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 **));
static int do_ielem __P((char *, int, char **));
static int do_return __P((char *, int, char **));
static int do_voltag __P((char *, int, char **));
#ifndef CHET_VT
#define CHET_VT 10 /* Completely Arbitrary */
#endif
/* Valid changer element types. */
const struct element_type elements[] = {
{ "drive", CHET_DT },
{ "picker", CHET_MT },
{ "portal", CHET_IE },
{ "slot", CHET_ST },
{ "voltag", CHET_VT }, /* Select tapes by barcode */
{ NULL, 0 },
};
/* Valid commands. */
const struct changer_command commands[] = {
{ "exchange", do_exchange },
{ "getpicker", do_getpicker },
{ "ielem", do_ielem },
{ "move", do_move },
{ "params", do_params },
{ "position", do_position },
{ "setpicker", do_setpicker },
{ "status", do_status },
{ "return", do_return },
{ "voltag", do_voltag },
{ 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 const char *changer_name;
int
main(argc, argv)
int argc;
char **argv;
{
int ch, i;
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) {
/* look for abbreviation */
for (i = 0; commands[i].cc_name != NULL; ++i)
if (strncmp(*argv, commands[i].cc_name,
strlen(*argv)) == 0)
break;
}
if (commands[i].cc_name == NULL)
errx(1, "unknown command: %s", *argv);
exit ((*commands[i].cc_handler)(commands[i].cc_name, argc, argv));
/* NOTREACHED */
}
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.
*/
++argv; --argc;
if (argc < 4) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 5) {
warnx("%s: too many arguments", cname);
goto usage;
}
(void) memset(&cmd, 0, sizeof(cmd));
/* <from ET> */
cmd.cm_fromtype = parse_element_type(*argv);
++argv; --argc;
/* Check for voltag virtual type */
if (CHET_VT == cmd.cm_fromtype) {
find_element(*argv, &cmd.cm_fromtype, &cmd.cm_fromunit);
} else {
/* <from EU> */
cmd.cm_fromunit = parse_element_unit(*argv);
}
++argv; --argc;
/* <to ET> */
cmd.cm_totype = parse_element_type(*argv);
++argv; --argc;
/* Check for voltag virtual type, and report error */
if (CHET_VT == cmd.cm_totype)
errx(1,"%s: voltag only makes sense as an element source",
cname);
/* <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, &cmd))
err(1, "%s: CHIOMOVE", changer_name);
return (0);
usage:
(void) 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.
*/
++argv; --argc;
if (argc < 4) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 8) {
warnx("%s: too many arguments", cname);
goto usage;
}
(void) memset(&cmd, 0, sizeof(cmd));
/* <src ET> */
cmd.ce_srctype = parse_element_type(*argv);
++argv; --argc;
/* Check for voltag virtual type */
if (CHET_VT == cmd.ce_srctype) {
find_element(*argv, &cmd.ce_srctype, &cmd.ce_srcunit);
} else {
/* <from EU> */
cmd.ce_srcunit = parse_element_unit(*argv);
}
++argv; --argc;
/* <dst1 ET> */
cmd.ce_fdsttype = parse_element_type(*argv);
++argv; --argc;
/* Check for voltag virtual type */
if (CHET_VT == cmd.ce_fdsttype) {
find_element(*argv, &cmd.ce_fdsttype, &cmd.ce_fdstunit);
} else {
/* <from 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;
if (CHET_VT == cmd.ce_sdsttype)
errx(1,"%s %s: voltag only makes sense as an element source",
cname, *argv);
/* <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, &cmd))
err(1, "%s: CHIOEXCHANGE", changer_name);
return (0);
usage:
(void) 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.
*/
++argv; --argc;
if (argc < 2) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 3) {
warnx("%s: too many arguments", cname);
goto usage;
}
(void) memset(&cmd, 0, 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, &cmd))
err(1, "%s: CHIOPOSITION", changer_name);
return (0);
usage:
(void) fprintf(stderr, "usage: %s %s <to ET> <to EU> [inv]\n",
__progname, cname);
return (1);
}
/* ARGSUSED */
static int
do_params(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_params data;
int picker;
/* No arguments to this command. */
++argv; --argc;
if (argc) {
warnx("%s: no arguments expected", cname);
goto usage;
}
/* Get params from changer and display them. */
(void) memset(&data, 0, sizeof(data));
if (ioctl(changer_fd, CHIOGPARAMS, &data))
err(1, "%s: CHIOGPARAMS", changer_name);
(void) 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)
(void) printf(", %d portal%s", data.cp_nportals,
(data.cp_nportals > 1) ? "s" : "");
/* Get current picker from changer and display it. */
if (ioctl(changer_fd, CHIOGPICKER, &picker))
err(1, "%s: CHIOGPICKER", changer_name);
(void) printf("\n%s: current picker: %d\n", changer_name, picker);
return (0);
usage:
(void) fprintf(stderr, "usage: %s %s\n", __progname, cname);
return (1);
}
/* ARGSUSED */
static int
do_getpicker(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
int picker;
/* No arguments to this command. */
++argv; --argc;
if (argc) {
warnx("%s: no arguments expected", cname);
goto usage;
}
/* Get current picker from changer and display it. */
if (ioctl(changer_fd, CHIOGPICKER, &picker))
err(1, "%s: CHIOGPICKER", changer_name);
(void) printf("%s: current picker: %d\n", changer_name, picker);
return (0);
usage:
(void) 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;
++argv; --argc;
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, &picker))
err(1, "%s: CHIOSPICKER", changer_name);
return (0);
usage:
(void) 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_params cp;
struct changer_element_status_request cesr;
int i, count, base, chet, schet, echet;
char *description;
int pvoltag = 0;
int avoltag = 0;
int sense = 0;
int scsi = 0;
int source = 0;
int intaddr = 0;
int c;
count = 0;
base = 0;
description = NULL;
optind = optreset = 1;
while ((c = getopt(argc, argv, "vVsSbaI")) != -1) {
switch (c) {
case 'v':
pvoltag = 1;
break;
case 'V':
avoltag = 1;
break;
case 's':
sense = 1;
break;
case 'S':
source = 1;
break;
case 'b':
scsi = 1;
break;
case 'I':
intaddr = 1;
break;
case 'a':
pvoltag = avoltag = source = sense = scsi = intaddr = 1;
break;
default:
warnx("%s: bad option", cname);
goto usage;
}
}
argc -= optind;
argv += optind;
/*
* On a status command, we expect the following:
*
* [<ET> [<start> [<end>] ] ]
*
* where ET == element type, start == first element to report,
* end == number of elements to report
*
* If we get no arguments, we get the status of all
* known element types.
*/
if (argc > 3) {
warnx("%s: too many arguments", cname);
goto usage;
}
/*
* Get params from changer. Specifically, we need the element
* counts.
*/
if (ioctl(changer_fd, CHIOGPARAMS, (char *)&cp))
err(1, "%s: CHIOGPARAMS", changer_name);
if (argc > 0)
schet = echet = parse_element_type(argv[0]);
else {
schet = CHET_MT;
echet = CHET_DT;
}
if (argc > 1) {
base = atol(argv[1]);
count = 1;
}
if (argc > 2)
count = atol(argv[2]) - base + 1;
if (base < 0 || count < 0)
errx(1, "bad arguments");
for (chet = schet; chet <= echet; ++chet) {
switch (chet) {
case CHET_MT:
if (count == 0)
count = cp.cp_npickers;
else if (count > cp.cp_npickers)
errx(1, "not that many pickers in device");
description = "picker";
break;
case CHET_ST:
if (count == 0)
count = cp.cp_nslots;
else if (count > cp.cp_nslots)
errx(1, "not that many slots in device");
description = "slot";
break;
case CHET_IE:
if (count == 0)
count = cp.cp_nportals;
else if (count > cp.cp_nportals)
errx(1, "not that many portals in device");
description = "portal";
break;
case CHET_DT:
if (count == 0)
count = cp.cp_ndrives;
else if (count > cp.cp_ndrives)
errx(1, "not that many drives in device");
description = "drive";
break;
default:
/* To appease gcc -Wuninitialized. */
count = 0;
description = NULL;
}
if (count == 0) {
if (argc == 0)
continue;
else {
printf("%s: no %s elements\n",
changer_name, description);
return (0);
}
}
bzero(&cesr, sizeof(cesr));
cesr.cesr_element_type = chet;
cesr.cesr_element_base = base;
cesr.cesr_element_count = count;
/* Allocate storage for the status structures. */
cesr.cesr_element_status =
(struct changer_element_status *)
calloc(count, sizeof(struct changer_element_status));
if (!cesr.cesr_element_status)
errx(1, "can't allocate status storage");
if (avoltag || pvoltag)
cesr.cesr_flags |= CESR_VOLTAGS;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr)) {
free(cesr.cesr_element_status);
err(1, "%s: CHIOGSTATUS", changer_name);
}
/* Dump the status for each reported element. */
for (i = 0; i < count; ++i) {
struct changer_element_status *ces =
&(cesr.cesr_element_status[i]);
printf("%s %d: %s", description, ces->ces_addr,
bits_to_string(ces->ces_flags,
CESTATUS_BITS));
if (sense)
printf(" sense: <0x%02x/0x%02x>",
ces->ces_sensecode,
ces->ces_sensequal);
if (pvoltag)
printf(" voltag: <%s:%d>",
ces->ces_pvoltag.cv_volid,
ces->ces_pvoltag.cv_serial);
if (avoltag)
printf(" avoltag: <%s:%d>",
ces->ces_avoltag.cv_volid,
ces->ces_avoltag.cv_serial);
if (source) {
if (ces->ces_flags & CES_SOURCE_VALID)
printf(" source: <%s %d>",
element_type_name(
ces->ces_source_type),
ces->ces_source_addr);
else
printf(" source: <>");
}
if (intaddr)
printf(" intaddr: <%d>", ces->ces_int_addr);
if (scsi) {
printf(" scsi: <");
if (ces->ces_flags & CES_SCSIID_VALID)
printf("%d", ces->ces_scsi_id);
else
putchar('?');
putchar(':');
if (ces->ces_flags & CES_LUN_VALID)
printf("%d", ces->ces_scsi_lun);
else
putchar('?');
putchar('>');
}
putchar('\n');
}
free(cesr.cesr_element_status);
count = 0;
}
return (0);
usage:
(void) fprintf(stderr, "usage: %s %s [-vVsSbaA] [<element type> [<start-addr> [<end-addr>] ] ]\n",
__progname, cname);
return (1);
}
static int
do_ielem(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
int timeout = 0;
if (argc == 2) {
timeout = atol(argv[1]);
} else if (argc > 1) {
warnx("%s: too many arguments", cname);
goto usage;
}
if (ioctl(changer_fd, CHIOIELEM, &timeout))
err(1, "%s: CHIOIELEM", changer_name);
return (0);
usage:
(void) fprintf(stderr, "usage: %s %s [<timeout>]\n",
__progname, cname);
return (1);
}
static int
do_voltag(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
int force = 0;
int clear = 0;
int alternate = 0;
int c;
struct changer_set_voltag_request csvr;
bzero(&csvr, sizeof(csvr));
optind = optreset = 1;
while ((c = getopt(argc, argv, "fca")) != -1) {
switch (c) {
case 'f':
force = 1;
break;
case 'c':
clear = 1;
break;
case 'a':
alternate = 1;
break;
default:
warnx("%s: bad option", cname);
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc < 2) {
warnx("%s: missing element specification", cname);
goto usage;
}
csvr.csvr_type = parse_element_type(argv[0]);
csvr.csvr_addr = atol(argv[1]);
if (!clear) {
if (argc < 3 || argc > 4) {
warnx("%s: missing argument", cname);
goto usage;
}
if (force)
csvr.csvr_flags = CSVR_MODE_REPLACE;
else
csvr.csvr_flags = CSVR_MODE_SET;
if (strlen(argv[2]) > sizeof(csvr.csvr_voltag.cv_volid)) {
warnx("%s: volume label too long", cname);
goto usage;
}
strncpy(csvr.csvr_voltag.cv_volid, argv[2],
sizeof(csvr.csvr_voltag.cv_volid));
if (argc == 4) {
csvr.csvr_voltag.cv_serial = atol(argv[3]);
}
} else {
if (argc != 2) {
warnx("%s: unexpected argument", cname);
goto usage;
}
csvr.csvr_flags = CSVR_MODE_CLEAR;
}
if (alternate) {
csvr.csvr_flags |= CSVR_ALTERNATE;
}
if (ioctl(changer_fd, CHIOSETVOLTAG, &csvr))
err(1, "%s: CHIOSETVOLTAG", changer_name);
return 0;
usage:
(void) fprintf(stderr,
"usage: %s %s [-fca] <element> [<voltag> [<vsn>] ]\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);
/* NOTREACHED */
}
static const char *
element_type_name(et)
int et;
{
int i;
for (i = 0; elements[i].et_name != NULL; i++)
if (elements[i].et_type == et)
return elements[i].et_name;
return "unknown";
}
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);
/* NOTREACHED */
}
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 const char *
bits_to_string(v, cp)
int v;
const char *cp;
{
const char *np;
char f, sep, *bp;
static char buf[128];
bp = buf;
(void) memset(buf, 0, sizeof(buf));
for (sep = '<'; (f = *cp++) != 0; cp = np) {
for (np = cp; *np >= ' ';)
np++;
if ((v & (1 << (f - 1))) == 0)
continue;
(void) snprintf(bp, sizeof(buf) - (bp - &buf[0]),
"%c%.*s", sep, (int)(long)(np - cp), cp);
bp += strlen(bp);
sep = ',';
}
if (sep != '<')
*bp = '>';
return (buf);
}
/*
* do_return()
*
* Given an element reference, ask the changer/picker to move that
* element back to its source slot.
*/
static int
do_return(cname, argc, argv)
char *cname;
int argc;
char **argv;
{
struct changer_element_status *ces;
struct changer_move cmd;
u_int16_t type, element;
++argv; --argc;
if (argc < 2) {
warnx("%s: too few arguments", cname);
goto usage;
} else if (argc > 3) {
warnx("%s: too many arguments", cname);
goto usage;
}
type = parse_element_type(*argv);
++argv; --argc;
/* Handle voltag virtual Changer Element Type */
if (CHET_VT == type) {
find_element(*argv, &type, &element);
} else {
element = parse_element_unit(*argv);
}
++argv; --argc;
ces = get_element_status(type, element); /* Get the status */
if (NULL == ces)
errx(1, "%s: null element status pointer", cname);
if (!(ces->ces_flags & CES_SOURCE_VALID))
errx(1, "%s: no source information", cname);
(void) memset(&cmd, 0, sizeof(cmd));
cmd.cm_fromtype = type;
cmd.cm_fromunit = element;
cmd.cm_totype = ces->ces_source_type;
cmd.cm_tounit = ces->ces_source_addr;
if (ioctl(changer_fd, CHIOMOVE, &cmd) == -1)
err(1, "%s: CHIOMOVE", changer_name);
free(ces);
return(0);
usage:
(void) fprintf(stderr, "usage: %s %s "
"<from ET> <from EU>\n", __progname, cname);
return(1);
}
/*
* get_element_status()
*
* return a *cesr for the specified changer element. This
* routing will malloc()/calloc() the memory. The caller
* should free() it when done.
*/
static struct changer_element_status *
get_element_status(type, element)
u_int16_t type;
u_int16_t element;
{
struct changer_element_status_request cesr;
struct changer_element_status *ces;
ces = (struct changer_element_status *)
calloc(1, sizeof(struct changer_element_status));
if (NULL == ces)
errx(1, "can't allocate status storage");
(void)memset(&cesr, 0, sizeof(cesr));
cesr.cesr_element_type = type;
cesr.cesr_element_base = element;
cesr.cesr_element_count = 1; /* Only this one element */
cesr.cesr_flags |= CESR_VOLTAGS; /* Grab voltags as well */
cesr.cesr_element_status = ces;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
free(ces);
err(1, "%s: CHIOGSTATUS", changer_name);
/* NOTREACHED */
}
return ces;
}
/*
* find_element()
*
* Given a <voltag> find the chager element and unit, or exit
* with an error if it isn't found. We grab the changer status
* and iterate until we find a match, or crap out.
*/
static void
find_element(voltag, et, eu)
char *voltag;
u_int16_t *et;
u_int16_t *eu;
{
struct changer_params cp;
struct changer_element_status_request cesr;
struct changer_element_status *ch_ces, *ces;
int elem, total_elem, found = 0;
/*
* Get the changer parameters, we're interested in the counts
* for all types of elements to perform our search.
*/
if (ioctl(changer_fd, CHIOGPARAMS, (char *)&cp))
err(1, "%s: CHIOGPARAMS", changer_name);
/* Allocate some memory for the results */
total_elem = (cp.cp_nslots + cp.cp_ndrives
+ cp.cp_npickers + cp.cp_nportals);
ch_ces = (struct changer_element_status *)
calloc(total_elem, sizeof(struct changer_element_status));
if (NULL == ch_ces)
errx(1, "can't allocate status storage");
ces = ch_ces;
/* Read in the changer slots */
if (cp.cp_nslots > 0) {
cesr.cesr_element_type = CHET_ST;
cesr.cesr_element_base = 0;
cesr.cesr_element_count = cp.cp_nslots;
cesr.cesr_flags |= CESR_VOLTAGS;
cesr.cesr_element_status = ces;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
free(ch_ces);
err(1, "%s: CHIOGSTATUS", changer_name);
}
ces += cp.cp_nslots;
}
/* Read in the drive information */
if (cp.cp_ndrives > 0 ) {
(void) memset(&cesr, 0, sizeof(cesr));
cesr.cesr_element_type = CHET_DT;
cesr.cesr_element_base = 0;
cesr.cesr_element_count = cp.cp_ndrives;
cesr.cesr_flags |= CESR_VOLTAGS;
cesr.cesr_element_status = ces;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
free(ch_ces);
err(1, "%s: CHIOGSTATUS", changer_name);
}
ces += cp.cp_ndrives;
}
/* Read in the portal information */
if (cp.cp_nportals > 0 ) {
(void) memset(&cesr, 0, sizeof(cesr));
cesr.cesr_element_type = CHET_IE;
cesr.cesr_element_base = 0;
cesr.cesr_element_count = cp.cp_nportals;
cesr.cesr_flags |= CESR_VOLTAGS;
cesr.cesr_element_status = ces;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
free(ch_ces);
err(1, "%s: CHIOGSTATUS", changer_name);
}
ces += cp.cp_nportals;
}
/* Read in the picker information */
if (cp.cp_npickers > 0) {
(void) memset(&cesr, 0, sizeof(cesr));
cesr.cesr_element_type = CHET_MT;
cesr.cesr_element_base = 0;
cesr.cesr_element_count = cp.cp_npickers;
cesr.cesr_flags |= CESR_VOLTAGS;
cesr.cesr_element_status = ces;
if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
free(ch_ces);
err(1, "%s: CHIOGSTATUS", changer_name);
}
}
/*
* Now search the list the specified <voltag>
*/
for (elem = 0; elem <= total_elem; ++elem) {
ces = &ch_ces[elem];
/* Make sure we have a tape in this element */
if ((ces->ces_flags & (CES_STATUS_ACCESS|CES_STATUS_FULL))
!= (CES_STATUS_ACCESS|CES_STATUS_FULL))
continue;
/* Check to see if it is our target */
if (strcasecmp(voltag, ces->ces_pvoltag.cv_volid) == 0) {
*et = ces->ces_type;
*eu = ces->ces_addr;
++found;
break;
}
}
if (!found) {
errx(1, "%s: unable to locate voltag: %s", changer_name,
voltag);
}
free(ch_ces);
return;
}
static void
cleanup()
{
/* Simple enough... */
(void)close(changer_fd);
}
static void
usage()
{
(void) fprintf(stderr, "usage: %s [-f changer] command [-<flags>] "
"arg1 arg2 [arg3 [...]]\n", __progname);
exit(1);
}
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