static ssize_t file_read(struct file *file, char __user * buffer, size_t count,
loff_t * ppos)
{
int minor = iminor(file->f_path.dentry->d_inode);
/* data available? */
if (!rtlx_read_poll(minor, (file->f_flags & O_NONBLOCK) ? 0 : 1)) {
return 0; // -EAGAIN makes cat whinge
}
return rtlx_read(minor, buffer, count);
}
static ssize_t file_read(struct file *file, char __user * buffer, size_t count,
loff_t * ppos)
{
int minor = iminor(file->f_path.dentry->d_inode);
if (!rtlx_read_poll(minor, (file->f_flags & O_NONBLOCK) ? 0 : 1)) {
return 0;
}
return rtlx_read(minor, buffer, count);
}
static unsigned int file_poll(struct file *file, poll_table * wait)
{
int minor = iminor(file_inode(file));
unsigned int mask = 0;
poll_wait(file, &channel_wqs[minor].rt_queue, wait);
poll_wait(file, &channel_wqs[minor].lx_queue, wait);
if (rtlx == NULL)
return 0;
/* data available to read? */
if (rtlx_read_poll(minor, 0))
mask |= POLLIN | POLLRDNORM;
/* space to write */
if (rtlx_write_poll(minor))
mask |= POLLOUT | POLLWRNORM;
return mask;
}
static unsigned int file_poll(struct file *file, poll_table * wait)
{
int minor;
unsigned int mask = 0;
minor = iminor(file->f_path.dentry->d_inode);
poll_wait(file, &channel_wqs[minor].rt_queue, wait);
poll_wait(file, &channel_wqs[minor].lx_queue, wait);
if (rtlx == NULL)
return 0;
if (rtlx_read_poll(minor, 0))
mask |= POLLIN | POLLRDNORM;
if (rtlx_write_poll(minor))
mask |= POLLOUT | POLLWRNORM;
return mask;
}
