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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include <kernel/OS.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
struct pipefd {
int in;
int out;
int err;
};
int main(int argc, char *argv[]) {
/* we expect the following...
*
* argv[0] = this stub
* argv[1] = directory to run in...
* argv[2] = progname to execute
* rest of arguments to be passed to program
*/
char *progname = argv[2];
char *directory = argv[1];
struct pipefd *pfd;
thread_id sender;
void *buffer;
char ** newargs;
int i = 0;
newargs = (char**)malloc(sizeof(char*) * (argc - 1));
buffer = (void*)malloc(sizeof(struct pipefd));
/* this will block until we get the data */
receive_data(&sender, buffer, sizeof(struct pipefd));
pfd = (struct pipefd*)buffer;
if (pfd->in > STDERR_FILENO) {
if (dup2(pfd->in, STDIN_FILENO) != STDIN_FILENO) return (-1);
close (pfd->in);
}
if (pfd->out > STDERR_FILENO) {
if (dup2(pfd->out, STDOUT_FILENO) != STDOUT_FILENO) return (-1);
close (pfd->out);
}
if (pfd->err > STDERR_FILENO) {
if (dup2(pfd->err, STDERR_FILENO) != STDERR_FILENO) return (-1);
close (pfd->err);
}
for (i=3;i<=argc;i++){
newargs[i-3] = argv[i];
}
/* tell the caller we're OK to start */
send_data(sender,1,NULL,0);
if (directory != NULL)
chdir(directory);
execve (progname, newargs, environ);
return (-1);
}
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