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/*
* rsyncrypto - an rsync friendly encryption
* Copyright (C) 2005 Shachar Shemesh for Lingnu Open Source Consulting ltd.
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, the rsyncrypto authors give permission
* to link the code of this program with the OpenSSL library (or with modified
* versions of OpenSSL that use the same license as OpenSSL), and distribute
* linked combinations including the two. You must obey the GNU General Public
* License in all respects for all of the code used other than OpenSSL. If you
* modify this file, you may extend this exception to your version of the file,
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* The project's homepage is at http://rsyncrypto.lingnu.com/
*/
#include <precomp.h>
#include "process.h"
process_ctl::process_ctl( char *cmd, redir *input, redir *output, redir *error, ... )
{
pid=fork();
if( pid==-1 )
throw rscerror("Error creating child process", errno, cmd);
if( pid==0 ) {
// Child
if( input!=NULL )
input->child_redirect(STDIN_FILENO, NULL);
if( output!=NULL )
output->child_redirect(STDOUT_FILENO, NULL);
if( error!=NULL )
error->child_redirect(STDERR_FILENO, NULL);
va_list args;
va_start(args, error);
int numargs=0;
while( va_arg(args, char *)!=NULL )
++numargs;
va_end(args);
va_start(args, error);
auto_array<char *> arguments(new char *[numargs+2]);
arguments[0]=cmd;
for( int i=1; (arguments[i]=va_arg(args, char *))!=NULL; ++i )
;
va_end(args);
execvp(cmd, arguments.get() );
} else {
// Parent
if( input!=NULL )
input->parent_redirect(STDIN_FILENO, NULL);
if( output!=NULL )
output->parent_redirect(STDOUT_FILENO, NULL);
if( error!=NULL )
error->parent_redirect(STDERR_FILENO, NULL);
}
}
int process_ctl::wait() const
{
int childstatus;
do {
waitpid(pid, &childstatus, 0);
} while( !WIFEXITED(childstatus) );
return WEXITSTATUS(childstatus);
}
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