freebsd-dev/bin/chio/chio.c
Philippe Charnier 930ab418d3 Do not remove include of <sys/param.h> and <sys/types.h>. They should
be here before including almost any POSIX header.
Requested by:	Bruce
1998-05-13 07:19:45 +00:00

668 lines
14 KiB
C

/*
* 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.
*/
#ifndef lint
static const char rcsid[] =
"$Id: chio.c,v 1.5 1998/05/06 06:49:56 charnier Exp $";
#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"
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;
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: chio %s "
"<from ET> <from EU> <to ET> <to EU> [inv]\n", 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: chio %s <src ET> <src EU> <dst1 ET> <dst1 EU>\n"
" [<dst2 ET> <dst2 EU>] [inv1] [inv2]\n", 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: chio %s <to ET> <to EU> [inv]\n", 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 arguments 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: chio %s\n", 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: chio %s\n", 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: chio %s <picker>\n", 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 *description;
count = 0;
description = NULL;
/*
* 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: chio %s [<element type>]\n", 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 += snprintf(bp, sizeof(buf) - (bp - &buf[0]),
"%c%.*s", sep, np - cp, cp);
sep = ',';
}
if (sep != '<')
*bp = '>';
return (buf);
}
static void
cleanup()
{
/* Simple enough... */
(void)close(changer_fd);
}
static void
usage()
{
int i;
fprintf(stderr, "usage: chio [-f changer] command [args ...]\n");
fprintf(stderr, "commands:");
for (i = 0; commands[i].cc_name; i++)
fprintf(stderr, " %s", commands[i].cc_name);
fprintf(stderr, "\n");
exit(1);
}