231 lines
5.3 KiB
C
231 lines
5.3 KiB
C
/* $NetBSD: luactl.c,v 1.2 2013/10/29 16:11:15 joerg Exp $ */
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/*
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* Copyright (c) 2011, Marc Balmer <mbalmer@NetBSD.org>.
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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. 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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/*
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* Program to control Lua devices.
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*/
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#include <stdbool.h>
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#include <sys/param.h>
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#include <sys/lua.h>
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#include <sys/ioctl.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 <paths.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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int devfd = -1;
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int quiet = 0;
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int docreate = 0;
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static void getinfo(void);
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static void create(char *, char *);
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static void destroy(char *);
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static void require(char *, char *);
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static void load(char *, char *);
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static void usage(void) __dead;
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#define _PATH_DEV_LUA "/dev/lua"
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int
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main(int argc, char *argv[])
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{
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int ch;
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while ((ch = getopt(argc, argv, "cq")) != -1)
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switch (ch) {
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case 'c':
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docreate = 1;
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break;
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case 'q':
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quiet = 1;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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if ((devfd = open(_PATH_DEV_LUA, O_RDWR)) == -1)
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err(EXIT_FAILURE, "%s", _PATH_DEV_LUA);
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if (argc == 0)
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getinfo();
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else if (!strcmp(argv[0], "create")) {
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if (argc == 2)
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create(argv[1], NULL);
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else if (argc == 3)
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create(argv[1], argv[2]);
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else
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usage();
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} else if (!strcmp(argv[0], "destroy")) {
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if (argc != 2)
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usage();
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destroy(argv[1]);
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} else if (!strcmp(argv[0], "require")) {
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if (argc != 3)
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usage();
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if (docreate)
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create(argv[1], NULL);
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require(argv[1], argv[2]);
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} else if (!strcmp(argv[0], "load")) {
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if (argc != 3)
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usage();
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if (docreate)
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create(argv[1], NULL);
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load(argv[1], argv[2]);
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} else
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usage();
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return EXIT_SUCCESS;
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}
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static void
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getinfo(void)
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{
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struct lua_info info;
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int n;
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info.states = NULL;
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if (ioctl(devfd, LUAINFO, &info) == -1)
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err(EXIT_FAILURE, "LUAINFO");
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if (info.num_states > 0) {
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info.states = calloc(info.num_states,
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sizeof(struct lua_state_info));
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if (info.states == NULL)
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err(EXIT_FAILURE, "calloc");
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if (ioctl(devfd, LUAINFO, &info) == -1)
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err(EXIT_FAILURE, "LUAINFO");
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}
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printf("%d active state%s:\n", info.num_states,
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info.num_states == 1 ? "" : "s");
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if (info.num_states > 0)
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printf("%-16s %-8s Description\n", "Name", "Creator");
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for (n = 0; n < info.num_states; n++)
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printf("%-16s %-8s %s\n", info.states[n].name,
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info.states[n].user == true ? "user" : "kernel",
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info.states[n].desc);
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}
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static void
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create(char *name, char *desc)
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{
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struct lua_create cr;
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strlcpy(cr.name, name, sizeof(cr.name));
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if (desc != NULL)
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strlcpy(cr.desc, desc, sizeof(cr.desc));
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else
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cr.desc[0] = '\0';
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if (ioctl(devfd, LUACREATE, &cr) == -1)
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err(EXIT_FAILURE, "LUACREATE");
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if (quiet)
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return;
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printf("%s created\n", name);
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}
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static void
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destroy(char *name)
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{
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struct lua_create cr;
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strlcpy(cr.name, name, sizeof(cr.name));
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if (ioctl(devfd, LUADESTROY, &cr) == -1)
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err(EXIT_FAILURE, "LUADESTROY");
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if (quiet)
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return;
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printf("%s destroyed\n", name);
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}
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static void
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require(char *name, char *module)
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{
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struct lua_require r;
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strlcpy(r.state, name, sizeof(r.state));
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strlcpy(r.module, module, sizeof(r.module));
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if (ioctl(devfd, LUAREQUIRE, &r) == -1)
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err(EXIT_FAILURE, "LUAREQUIRE");
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if (quiet)
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return;
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printf("%s required by %s\n", module, name);
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}
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static void
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load(char *name, char *path)
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{
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struct lua_load l;
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strlcpy(l.state, name, sizeof(l.state));
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strlcpy(l.path, path, sizeof(l.path));
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if (ioctl(devfd, LUALOAD, &l) == -1)
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err(EXIT_FAILURE, "LUALOAD");
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if (quiet)
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return;
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printf("%s loaded into %s\n", path, name);
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}
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static void
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usage(void)
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{
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const char *p;
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p = getprogname();
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fprintf(stderr, "usage: %s [-cq]\n", p);
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fprintf(stderr, " %s [-cq] create name [desc]\n", p);
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fprintf(stderr, " %s [-cq] destroy name\n", p);
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fprintf(stderr, " %s [-cq] require name module\n", p);
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fprintf(stderr, " %s [-cq] load name path\n", p);
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exit(EXIT_FAILURE);
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}
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