668 lines
14 KiB
C
668 lines
14 KiB
C
/* $Id: chio.c,v 1.3 1997/06/06 06:32:09 charnier Exp $ */
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/*
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* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgements:
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* This product includes software developed by Jason R. Thorpe
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* for And Communications, http://www.and.com/
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/chio.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "defs.h"
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#include "pathnames.h"
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static void usage __P((void));
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static void cleanup __P((void));
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static int parse_element_type __P((char *));
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static int parse_element_unit __P((char *));
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static int parse_special __P((char *));
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static int is_special __P((char *));
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static char *bits_to_string __P((int, const char *));
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static int do_move __P((char *, int, char **));
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static int do_exchange __P((char *, int, char **));
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static int do_position __P((char *, int, char **));
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static int do_params __P((char *, int, char **));
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static int do_getpicker __P((char *, int, char **));
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static int do_setpicker __P((char *, int, char **));
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static int do_status __P((char *, int, char **));
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/* Valid changer element types. */
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const struct element_type elements[] = {
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{ "picker", CHET_MT },
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{ "slot", CHET_ST },
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{ "portal", CHET_IE },
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{ "drive", CHET_DT },
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{ NULL, 0 },
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};
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/* Valid commands. */
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const struct changer_command commands[] = {
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{ "move", do_move },
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{ "exchange", do_exchange },
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{ "position", do_position },
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{ "params", do_params },
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{ "getpicker", do_getpicker },
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{ "setpicker", do_setpicker },
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{ "status", do_status },
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{ NULL, 0 },
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};
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/* Valid special words. */
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const struct special_word specials[] = {
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{ "inv", SW_INVERT },
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{ "inv1", SW_INVERT1 },
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{ "inv2", SW_INVERT2 },
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{ NULL, 0 },
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};
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static int changer_fd;
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static char *changer_name;
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int ch, i;
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while ((ch = getopt(argc, argv, "f:")) != -1) {
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switch (ch) {
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case 'f':
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changer_name = optarg;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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usage();
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/* Get the default changer if not already specified. */
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if (changer_name == NULL)
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if ((changer_name = getenv(CHANGER_ENV_VAR)) == NULL)
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changer_name = _PATH_CH;
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/* Open the changer device. */
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if ((changer_fd = open(changer_name, O_RDWR, 0600)) == -1)
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err(1, "%s: open", changer_name);
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/* Register cleanup function. */
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if (atexit(cleanup))
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err(1, "can't register cleanup function");
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/* Find the specified command. */
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for (i = 0; commands[i].cc_name != NULL; ++i)
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if (strcmp(*argv, commands[i].cc_name) == 0)
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break;
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if (commands[i].cc_name == NULL)
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errx(1, "unknown command: %s", *argv);
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/* Skip over the command name and call handler. */
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++argv; --argc;
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exit ((*commands[i].cc_handler)(commands[i].cc_name, argc, argv));
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}
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static int
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do_move(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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struct changer_move cmd;
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int val;
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/*
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* On a move command, we expect the following:
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*
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* <from ET> <from EU> <to ET> <to EU> [inv]
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*
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* where ET == element type and EU == element unit.
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*/
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if (argc < 4) {
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warnx("%s: too few arguments", cname);
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goto usage;
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} else if (argc > 5) {
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warnx("%s: too many arguments", cname);
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goto usage;
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}
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bzero(&cmd, sizeof(cmd));
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/* <from ET> */
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cmd.cm_fromtype = parse_element_type(*argv);
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++argv; --argc;
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/* <from EU> */
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cmd.cm_fromunit = parse_element_unit(*argv);
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++argv; --argc;
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/* <to ET> */
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cmd.cm_totype = parse_element_type(*argv);
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++argv; --argc;
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/* <to EU> */
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cmd.cm_tounit = parse_element_unit(*argv);
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++argv; --argc;
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/* Deal with optional command modifier. */
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if (argc) {
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val = parse_special(*argv);
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switch (val) {
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case SW_INVERT:
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cmd.cm_flags |= CM_INVERT;
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break;
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default:
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errx(1, "%s: inappropriate modifier `%s'",
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cname, *argv);
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/* NOTREACHED */
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}
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}
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/* Send command to changer. */
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if (ioctl(changer_fd, CHIOMOVE, (char *)&cmd))
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err(1, "%s: CHIOMOVE", changer_name);
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return (0);
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usage:
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fprintf(stderr, "usage: chio %s "
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"<from ET> <from EU> <to ET> <to EU> [inv]\n", cname);
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return (1);
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}
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static int
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do_exchange(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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struct changer_exchange cmd;
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int val;
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/*
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* On an exchange command, we expect the following:
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*
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* <src ET> <src EU> <dst1 ET> <dst1 EU> [<dst2 ET> <dst2 EU>] [inv1] [inv2]
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*
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* where ET == element type and EU == element unit.
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*/
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if (argc < 4) {
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warnx("%s: too few arguments", cname);
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goto usage;
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} else if (argc > 8) {
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warnx("%s: too many arguments", cname);
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goto usage;
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}
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bzero(&cmd, sizeof(cmd));
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/* <src ET> */
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cmd.ce_srctype = parse_element_type(*argv);
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++argv; --argc;
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/* <src EU> */
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cmd.ce_srcunit = parse_element_unit(*argv);
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++argv; --argc;
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/* <dst1 ET> */
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cmd.ce_fdsttype = parse_element_type(*argv);
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++argv; --argc;
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/* <dst1 EU> */
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cmd.ce_fdstunit = parse_element_unit(*argv);
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++argv; --argc;
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/*
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* If the next token is a special word or there are no more
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* arguments, then this is a case of simple exchange.
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* dst2 == src.
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*/
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if ((argc == 0) || is_special(*argv)) {
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cmd.ce_sdsttype = cmd.ce_srctype;
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cmd.ce_sdstunit = cmd.ce_srcunit;
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goto do_special;
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}
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/* <dst2 ET> */
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cmd.ce_sdsttype = parse_element_type(*argv);
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++argv; --argc;
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/* <dst2 EU> */
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cmd.ce_sdstunit = parse_element_unit(*argv);
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++argv; --argc;
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do_special:
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/* Deal with optional command modifiers. */
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while (argc) {
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val = parse_special(*argv);
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++argv; --argc;
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switch (val) {
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case SW_INVERT1:
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cmd.ce_flags |= CE_INVERT1;
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break;
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case SW_INVERT2:
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cmd.ce_flags |= CE_INVERT2;
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break;
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default:
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errx(1, "%s: inappropriate modifier `%s'",
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cname, *argv);
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/* NOTREACHED */
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}
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}
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/* Send command to changer. */
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if (ioctl(changer_fd, CHIOEXCHANGE, (char *)&cmd))
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err(1, "%s: CHIOEXCHANGE", changer_name);
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return (0);
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usage:
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fprintf(stderr,
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"usage: chio %s <src ET> <src EU> <dst1 ET> <dst1 EU>\n"
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" [<dst2 ET> <dst2 EU>] [inv1] [inv2]\n", cname);
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return (1);
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}
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static int
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do_position(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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struct changer_position cmd;
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int val;
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/*
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* On a position command, we expect the following:
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*
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* <to ET> <to EU> [inv]
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*
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* where ET == element type and EU == element unit.
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*/
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if (argc < 2) {
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warnx("%s: too few arguments", cname);
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goto usage;
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} else if (argc > 3) {
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warnx("%s: too many arguments", cname);
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goto usage;
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}
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bzero(&cmd, sizeof(cmd));
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/* <to ET> */
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cmd.cp_type = parse_element_type(*argv);
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++argv; --argc;
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/* <to EU> */
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cmd.cp_unit = parse_element_unit(*argv);
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++argv; --argc;
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/* Deal with optional command modifier. */
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if (argc) {
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val = parse_special(*argv);
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switch (val) {
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case SW_INVERT:
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cmd.cp_flags |= CP_INVERT;
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break;
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default:
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errx(1, "%s: inappropriate modifier `%s'",
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cname, *argv);
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/* NOTREACHED */
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}
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}
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/* Send command to changer. */
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if (ioctl(changer_fd, CHIOPOSITION, (char *)&cmd))
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err(1, "%s: CHIOPOSITION", changer_name);
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return (0);
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usage:
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fprintf(stderr, "usage: chio %s <to ET> <to EU> [inv]\n", cname);
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return (1);
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}
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static int
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do_params(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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struct changer_params data;
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/* No arguments to this command. */
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if (argc) {
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warnx("%s: no arguments expected", cname);
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goto usage;
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}
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/* Get params from changer and display them. */
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bzero(&data, sizeof(data));
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if (ioctl(changer_fd, CHIOGPARAMS, (char *)&data))
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err(1, "%s: CHIOGPARAMS", changer_name);
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printf("%s: %d slot%s, %d drive%s, %d picker%s",
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changer_name,
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data.cp_nslots, (data.cp_nslots > 1) ? "s" : "",
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data.cp_ndrives, (data.cp_ndrives > 1) ? "s" : "",
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data.cp_npickers, (data.cp_npickers > 1) ? "s" : "");
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if (data.cp_nportals)
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printf(", %d portal%s", data.cp_nportals,
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(data.cp_nportals > 1) ? "s" : "");
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printf("\n%s: current picker: %d\n", changer_name, data.cp_curpicker);
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return (0);
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usage:
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fprintf(stderr, "usage: chio %s\n", cname);
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return (1);
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}
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static int
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do_getpicker(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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int picker;
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/* No arguments to this command. */
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if (argc) {
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warnx("%s: no arguments expected", cname);
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goto usage;
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}
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/* Get current picker from changer and display it. */
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if (ioctl(changer_fd, CHIOGPICKER, (char *)&picker))
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err(1, "%s: CHIOGPICKER", changer_name);
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printf("%s: current picker: %d\n", changer_name, picker);
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return (0);
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usage:
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fprintf(stderr, "usage: chio %s\n", cname);
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return (1);
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}
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static int
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do_setpicker(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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int picker;
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if (argc < 1) {
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warnx("%s: too few arguments", cname);
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goto usage;
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} else if (argc > 1) {
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warnx("%s: too many arguments", cname);
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goto usage;
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}
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picker = parse_element_unit(*argv);
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/* Set the changer picker. */
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if (ioctl(changer_fd, CHIOSPICKER, (char *)&picker))
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err(1, "%s: CHIOSPICKER", changer_name);
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return (0);
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usage:
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fprintf(stderr, "usage: chio %s <picker>\n", cname);
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return (1);
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}
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static int
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do_status(cname, argc, argv)
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char *cname;
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int argc;
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char **argv;
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{
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struct changer_element_status cmd;
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struct changer_params data;
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u_int8_t *statusp;
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int i, count, chet, schet, echet;
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char *description;
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count = 0;
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description = NULL;
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/*
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* On a status command, we expect the following:
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*
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* [<ET>]
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*
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* where ET == element type.
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*
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* If we get no arguments, we get the status of all
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* known element types.
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*/
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if (argc > 1) {
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warnx("%s: too many arguments", cname);
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goto usage;
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}
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/*
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* Get params from changer. Specifically, we need the element
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* counts.
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*/
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bzero(&data, sizeof(data));
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if (ioctl(changer_fd, CHIOGPARAMS, (char *)&data))
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err(1, "%s: CHIOGPARAMS", changer_name);
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if (argc)
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schet = echet = parse_element_type(*argv);
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else {
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schet = CHET_MT;
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echet = CHET_DT;
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}
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for (chet = schet; chet <= echet; ++chet) {
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switch (chet) {
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case CHET_MT:
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count = data.cp_npickers;
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description = "picker";
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break;
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case CHET_ST:
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count = data.cp_nslots;
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description = "slot";
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break;
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case CHET_IE:
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count = data.cp_nportals;
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description = "portal";
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break;
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case CHET_DT:
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count = data.cp_ndrives;
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description = "drive";
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break;
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}
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if (count == 0) {
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if (argc == 0)
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continue;
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else {
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printf("%s: no %s elements\n",
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changer_name, description);
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return (0);
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}
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}
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/* Allocate storage for the status bytes. */
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if ((statusp = (u_int8_t *)malloc(count)) == NULL)
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errx(1, "can't allocate status storage");
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bzero(statusp, count);
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bzero(&cmd, sizeof(cmd));
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cmd.ces_type = chet;
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cmd.ces_data = statusp;
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if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cmd)) {
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free(statusp);
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err(1, "%s: CHIOGSTATUS", changer_name);
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}
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/* Dump the status for each element of this type. */
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for (i = 0; i < count; ++i) {
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printf("%s %d: %s\n", description, i,
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bits_to_string(statusp[i], CESTATUS_BITS));
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}
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|
|
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);
|
|
}
|