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a0347c7148
HardenedBSD/bin/chio/chio.c
Joerg Wunsch 7f33c7dd6f When running a "chio return" operation using a physical source unit 
rather than a voltag name, do not set the CESR_VOLTAGS flags in the
CHIOGSTATUS command requesting the current status.  As voltags are an
optional feature that must be handled as "reserved" by media changers
not implementing the feature, always setting CESR_VOLTAGS resulted in
the command being aborted with an `Invalid field in CDB', and
consequently the "chio return" failed, for media changers that do not
support voltags.

MFC after:	1 week
2008-10-30 19:51:02 +00:00

1179 lines
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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
*/
#if 0
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1996 Jason R. Thorpe. All rights reserved.";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/chio.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defs.h"
#include "pathnames.h"
static void usage(void);
static void cleanup(void);
static u_int16_t parse_element_type(char *);
static u_int16_t parse_element_unit(char *);
static const char * element_type_name(int et);
static int parse_special(char *);
static int is_special(char *);
static const char *bits_to_string(ces_status_flags, const char *);
static void find_element(char *, uint16_t *, uint16_t *);
static struct changer_element_status *get_element_status
(unsigned int, unsigned int, int);
static int do_move(const char *, int, char **);
static int do_exchange(const char *, int, char **);
static int do_position(const char *, int, char **);
static int do_params(const char *, int, char **);
static int do_getpicker(const char *, int, char **);
static int do_setpicker(const char *, int, char **);
static int do_status(const char *, int, char **);
static int do_ielem(const char *, int, char **);
static int do_return(const char *, int, char **);
static int do_voltag(const 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(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(const 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", getprogname(), cname);
return (1);
}
static int
do_exchange(const 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",
getprogname(), cname);
return (1);
}
static int
do_position(const 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",
getprogname(), cname);
return (1);
}
/* ARGSUSED */
static int
do_params(const 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", getprogname(), cname);
return (1);
}
/* ARGSUSED */
static int
do_getpicker(const 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", getprogname(), cname);
return (1);
}
static int
do_setpicker(const 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", getprogname(), cname);
return (1);
}
static int
do_status(const char *cname, int argc, char **argv)
{
struct changer_params cp;
struct changer_element_status_request cesr;
int i;
u_int16_t base, count, chet, schet, echet;
const 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 = (u_int16_t)atol(argv[1]);
count = 1;
}
if (argc > 2)
count = (u_int16_t)atol(argv[2]) - base + 1;
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((size_t)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",
getprogname(), cname);
return (1);
}
static int
do_ielem(const 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",
getprogname(), cname);
return (1);
}
static int
do_voltag(const 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 = (u_int16_t)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;
}
strlcpy((char *)csvr.csvr_voltag.cv_volid, argv[2],
sizeof(csvr.csvr_voltag.cv_volid));
if (argc == 4) {
csvr.csvr_voltag.cv_serial = (u_int16_t)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",
getprogname(), cname);
return 1;
}
static u_int16_t
parse_element_type(char *cp)
{
int i;
for (i = 0; elements[i].et_name != NULL; ++i)
if (strcmp(elements[i].et_name, cp) == 0)
return ((u_int16_t)elements[i].et_type);
errx(1, "invalid element type `%s'", cp);
/* NOTREACHED */
}
static const char *
element_type_name(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 u_int16_t
parse_element_unit(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 ((u_int16_t)i);
}
static int
parse_special(char *cp)
{
int val;
val = is_special(cp);
if (val)
return (val);
errx(1, "invalid modifier `%s'", cp);
/* NOTREACHED */
}
static int
is_special(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(ces_status_flags 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 (((int)v & (1 << (f - 1))) == 0)
continue;
(void) snprintf(bp, sizeof(buf) - (size_t)(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(const char *cname, int argc, char **argv)
{
struct changer_element_status *ces;
struct changer_move cmd;
uint16_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;
/* Get the status */
ces = get_element_status((unsigned int)type, (unsigned int)element,
CHET_VT == type);
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", getprogname(), 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(unsigned int type, unsigned int element, int use_voltags)
{
struct changer_element_status_request cesr;
struct changer_element_status *ces;
ces = (struct changer_element_status *)
calloc((size_t)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 = (uint16_t)type;
cesr.cesr_element_base = (uint16_t)element;
cesr.cesr_element_count = 1; /* Only this one element */
if (use_voltags)
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(char *voltag, uint16_t *et, uint16_t *eu)
{
struct changer_params cp;
struct changer_element_status_request cesr;
struct changer_element_status *ch_ces, *ces;
int found = 0;
size_t elem, total_elem;
/*
* 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,
(const char *)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(void)
{
/* Simple enough... */
(void)close(changer_fd);
}
static void
usage(void)
{
(void)fprintf(stderr, "usage: %s [-f changer] command [-<flags>] "
"arg1 arg2 [arg3 [...]]\n", getprogname());
exit(1);
}
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