mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
98f6c48487
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@861 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/* $Id: plugin_sample.c 840 2007-09-09 12:17:42Z michael $
|
|
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_sample.c $
|
|
*
|
|
* plugin that forks and exec's once a key is pressed. the difference to the exec plugin is: this can also only be done once!
|
|
*
|
|
* Copyright (C) 2008, Wolfgang Henerbichler <wogri@wogri.com>
|
|
*
|
|
* This file is part of LCD4Linux.
|
|
*
|
|
* LCD4Linux is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* LCD4Linux is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* exported functions:
|
|
*
|
|
* int plugin_init_button_exec(void)
|
|
* adds various functions
|
|
*
|
|
*/
|
|
|
|
|
|
/* define the include files you need */
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
|
|
/* these should always be included */
|
|
#include "debug.h"
|
|
#include "plugin.h"
|
|
|
|
#ifdef WITH_DMALLOC
|
|
#include <dmalloc.h>
|
|
#endif
|
|
|
|
|
|
|
|
/* sample function 'button_exec' */
|
|
/* takes as many arguments as you want, first arguemnt is the command that will be called via exec, all the following are parameters you want to add to your command - you won't know what has happened after forking - no return codes available */
|
|
/* Note: all local functions should be declared 'static' */
|
|
|
|
static void my_button_exec(RESULT * result, int argc, RESULT * argv[])
|
|
{
|
|
int pid;
|
|
int i;
|
|
int errsv;
|
|
char *args[argc + 1];
|
|
char *arg;
|
|
char *prog;
|
|
char *env[1];
|
|
|
|
signal(SIGCHLD, SIG_IGN);
|
|
prog = R2S(argv[0]);
|
|
info(prog);
|
|
for (i = 1; i < argc; i++) {
|
|
arg = R2S(argv[i]);
|
|
args[i] = arg;
|
|
info(arg);
|
|
}
|
|
args[i] = (char *) 0;
|
|
env[0] = (char *) 0;
|
|
pid = fork();
|
|
if (pid == 0) { /* child-process */
|
|
/* char *args[] = {"-r", "-t", "-l", (char *) 0 }; */
|
|
info("executing program");
|
|
execve(prog, args, env);
|
|
errsv = errno;
|
|
info("executing program failed");
|
|
info(strerror(errsv));
|
|
exit(0);
|
|
} else if (pid == -1) {
|
|
info("weird error has occured. couldn't fork.");
|
|
} else {
|
|
SetResult(&result, R_STRING, "0");
|
|
}
|
|
}
|
|
|
|
|
|
/* plugin initialization */
|
|
/* MUST NOT be declared 'static'! */
|
|
int plugin_init_button_exec(void)
|
|
{
|
|
|
|
/* register all our cool functions */
|
|
/* the second parameter is the number of arguments */
|
|
/* -1 stands for variable argument list */
|
|
AddFunction("button_exec", -1, my_button_exec);
|
|
return 0;
|
|
}
|
|
|
|
void plugin_exit_button_exec(void)
|
|
{
|
|
/* free any allocated memory */
|
|
/* close filedescriptors */
|
|
}
|