Linux Driver - Select Implementation!

G Jalaja Devi (jalaja@teil.soft.net)
Fri, 26 Feb 1999 16:43:22 -0530 (IST)

When multiple applications issue a select on the same device (driver),
Is there any way to notify only one of the application from the driver?

For ex.
Application0 Application1
fd0 = open("/dev/dev1"); fd1 = open("/dev/dev1");
select(fd0, ..); select(fd1,...)

-----------------
Kernel space

static int select(struct inode *inode, struct file *filep)
{
interruptible_sleep_on(&wq);
}

When I do a wake_up on the "wq", how *only Application0* can be notified?
(Application0 should not be notified);

Thanks,
jalaja

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