pid_t ProcessStart( process_t p )
{
if( pipe( p->fd_0 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_1 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_2 ) == -1 ){
return -1 ;
}
p->pid = fork() ;
if( p->pid == -1 ){
return -1 ;
}
if( p->pid == 0 ){
if( p->str.user_id != ( uid_t )-1 ){
/*
* drop privileges permanently
*/
seteuid( 0 ) ;
setgid( p->str.user_id ) ;
setgroups( 1,&p->str.user_id ) ;
setegid( p->str.user_id ) ;
setuid( p->str.user_id ) ;
}
dup2( p->fd_0[ 0 ],0 ) ;
dup2( p->fd_1[ 1 ],1 ) ;
dup2( p->fd_2[ 1 ],2 ) ;
close( p->fd_1[ 0 ] ) ;
close( p->fd_0[ 1 ] ) ;
close( p->fd_2[ 0 ] ) ;
if( p->str.priority != 0 ){
setpriority( PRIO_PROCESS,0,p->str.priority ) ;
}
if( p->str.args == NULL ){
#define _null ( void * )0
if( p->str.env != NULL ){
execle( p->exe,p->exe,_null,p->str.env ) ;
}else{
execl( p->exe,p->exe,_null ) ;
}
}else{
#define _cast( x ) ( char * const * )x
if( p->str.env != NULL ){
execve( p->str.args[ 0 ],_cast( p->str.args ),_cast( p->str.env ) ) ;
}else{
execv( p->str.args[ 0 ],_cast( p->str.args ) ) ;
}
}
/*
* execv has failed :-(
*/
_Exit( 1 ) ;
/*
* child process block ends here
*/
}
/*
* parent process continues from here
*/
close( p->fd_0[ 0 ] ) ;
close( p->fd_1[ 1 ] ) ;
close( p->fd_2[ 1 ] ) ;
p->state = ProcessIsStillRunning ;
if( p->str.timeout != -1 ){
__ProcessStartTimer( p ) ;
}
return p->pid ;
}
pid_t ProcessStart( process_t p )
{
if( pipe( p->fd_0 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_1 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_2 ) == -1 ){
return -1 ;
}
p->pid = fork() ;
if( p->pid == -1 ){
return -1 ;
}
if( p->pid == 0 ){
if( p->str.user_id != ( uid_t )-1 ){
/*
* drop privileges permanently
*/
seteuid( 0 ) ;
setuid( p->str.user_id );
}
dup2( p->fd_0[ 0 ],0 ) ;
dup2( p->fd_1[ 1 ],1 ) ;
dup2( p->fd_2[ 1 ],2 ) ;
close( p->fd_1[ 0 ] ) ;
close( p->fd_0[ 1 ] ) ;
close( p->fd_2[ 0 ] ) ;
if( p->str.priority != 0 ){
setpriority( PRIO_PROCESS,0,p->str.priority ) ;
}
if( p->str.args == NULL ){
if( p->str.env != NULL ){
execle( p->exe,p->exe,( char * )NULL,p->str.env ) ;
}else{
execl( p->exe,p->exe,( char * )NULL ) ;
}
}else{
if( p->str.env != NULL ){
execve( p->exe,p->str.args,p->str.env ) ;
}else{
execv( p->exe,p->str.args ) ;
}
}
/*
* execv has failed :-(
*/
_Exit( 1 ) ;
/*
* child process block ends here
*/
}
/*
* parent process continues from here
*/
close( p->fd_0[ 0 ] ) ;
close( p->fd_1[ 1 ] ) ;
close( p->fd_2[ 1 ] ) ;
p->state = RUNNING ;
if( p->str.timeout != -1 ){
__ProcessStartTimer( p ) ;
}
return p->pid ;
}
pid_t ProcessStart( process_t p )
{
char * const env[] = { "PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin",NULL } ;
if( pipe( p->fd_0 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_1 ) == -1 ){
return -1 ;
}
if( pipe( p->fd_2 ) == -1 ){
return -1 ;
}
p->pid = fork() ;
if( p->pid == -1 ){
return -1 ;
}
if( p->pid == 0 ){
if( p->str.user_id != ( uid_t )-1 ){
/*
* drop privileges permanently
*/
_ignore_result( seteuid( 0 ) ) ;
_ignore_result( setgid( p->str.user_id ) ) ;
_ignore_result( setgroups( 1,&p->str.user_id ) ) ;
_ignore_result( setegid( p->str.user_id ) ) ;
_ignore_result( setuid( p->str.user_id ) ) ;
}
dup2( p->fd_0[ 1 ],0 ) ;
dup2( p->fd_1[ 1 ],1 ) ;
dup2( p->fd_2[ 1 ],2 ) ;
close( p->fd_1[ 0 ] ) ;
close( p->fd_0[ 0 ] ) ;
close( p->fd_2[ 0 ] ) ;
if( p->str.priority != 0 ){
setpriority( PRIO_PROCESS,0,p->str.priority ) ;
}
if( p->str.env == NULL || p->str.env[ 0 ] == NULL ){
if( environ[ 0 ] == NULL ){
_execve( p,env ) ;
}else{
_execve( p,environ ) ;
}
}else{
_execve( p,p->str.env ) ;
}
/*
* execv has failed :-(
*/
_Exit( 1 ) ;
/*
* child process block ends here
*/
}
/*
* parent process continues from here
*/
close( p->fd_0[ 0 ] ) ;
close( p->fd_1[ 1 ] ) ;
close( p->fd_2[ 1 ] ) ;
p->state = ProcessIsStillRunning ;
if( p->str.timeout != -1 ){
__ProcessStartTimer( p ) ;
}
return p->pid ;
}
