int kpipe(int pd[2])
{
OFT *read, *write;
PIPE *pipe;
u16 i = 0, j=0;
pipe = getPipe();
if( pipe == 0)
{
return 0;
}
if ( getOFT(&read, &write) < 0 )
{
printf("No open file descripters\n");
return -1;
}
for(i=0;i < NFD;++i)
{
if (running->fd[i] == 0)
{
printf("Putting [%d] into address %x\n", i, pd);
put_word(i, running->uss, pd);
pd++;
if( j == 0 )
{
running->fd[i] = read;
}else
{
running->fd[i] = write;
}
++j;
}
if (j == 2)
{
break;
}
}
read->pipe_ptr = write->pipe_ptr = pipe;
read->mode = READ_PIPE;
read->refCount = 1;
printf("READ mode[%d] count[%d]\n", read->mode, read->refCount);
write->mode = WRITE_PIPE;
write->refCount = 1;
printf("Write mode[%d] count[%d]\n", write->mode, write->refCount);
for(i=0;i< PSIZE ; ++i)
{
pipe->buf[i] = 0;
}
pipe->head = pipe->tail = pipe->data = 0;
pipe->nreader = pipe->nwriter = pipe->busy = 1;
pipe->room = PSIZE;
}
int kpipe(int pd)
{
// create a pipe; fill pd[0] pd[1] (in USER mode!!!) with descriptors
OFTE * read, * write;
PIPE *newpipe;
u16 i = 0;
newpipe = getPipe();
if(newpipe == 0){
return 0;
}
if(!getOFT(&read, &write)){
printf("getOFT success");
}
printf("ref: %d\n", read->refCount);
printf("About to pipe running PROC %d\n", running->pid);
// Get the next open FD spot and fill it with the reader OFTE
while(running->fd[i] != 0){
i++;
}
running->fd[i] = read;
printf("Putting word (%d) into address %x\n", i, pd);
put_word(i, running->uss, pd);
// Continue to the next open spot and fill it with the writer OFTE
pd+=2;
while(running->fd[i] != 0){
i++;
}
running->fd[i] = write;
printf("Putting word (%d) into address %x\n", i, pd);
put_word(i, running->uss, pd);
// Set both the reader and writer to the pipe
read->pipe_ptr = write->pipe_ptr = pipe;
// Init the OFTE structs
read->mode = READ_PIPE;
write->mode = WRITE_PIPE;
printf("mode: %d\n", read->mode);
printf("OFT = %x\n", read);
printf("OFT = %x\n", write);
read->refCount = 1;
write->refCount = 1;
// Init our pipe
for(i=0;i<PIPE_SIZE;i++){
pipe->buf[i] = 0;
}
pipe->head = 0;
pipe->tail = 0;
pipe->room = PIPE_SIZE;
pipe->data = 0;
pipe->nreader = 1;
pipe->nwriter = 1;
pipe->busy = 1;
}
