int launch(char *path, char **av, char ***env, t_fd *fd)
{
if (dup2(fd->in, 0) == -1)
return (-1);
if (dup2(fd->out, 1) == -1)
return (-1);
if (dup2(fd->err, 2) == -1)
return (-1);
if ((execve(path, av, *env)) == -1)
return (launch_error(path));
return (0);
}
/*---------------------------------------------------------------------*/
static pid_t
exec_hop( char *msg ) {
int pid;
/* show the waiting widget */
gui_start_waiting( msg );
if( (pipe( hop_pipe_stdout ) < 0) || (pipe( hop_pipe_stderr ) < 0) ) {
launch_error( "Cannot create pipe", strerror( errno ) );
}
switch( pid = fork() ) {
case -1:
launch_error( "Cannot fork", strerror( errno ) );
return -1;
case 0:
/* redirect to the pipe */
if( dup2( hop_pipe_stdout[ 1 ], 1 ) < -1 ) {
launch_error( "Cannot duplicate stdout", strerror( errno ) );
}
if( dup2( hop_pipe_stderr[ 1 ], 2 ) < -1 ) {
launch_error( "Cannot duplicate stderr", strerror( errno ) );
}
/* exec the hop process */
if( exec( get_hop_command( hop_command ) ) == -1 ) {
launch_error( "Cannot start hop", strerror( errno ) );
}
return -1;
default:
/* the parent process */
return pid;
}
}
