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Add POLLRDNORM/POLLWRNORM support.

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On Linux these are meant to be equivalent to POLLIN/POLLOUT. Rather
than hack these on in sys_poll etc it felt cleaner to just cleanup
the call sites to notify for both events. This is what linux does
as well.

Fixes #5544

PiperOrigin-RevId: 364859977
This commit is contained in:
Bhasker Hariharan
2021-03-24 12:11:44 -07:00
committed by gVisor bot
parent 72ff6a1cac
commit e7ca2a51a8
73 changed files with 351 additions and 276 deletions
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pkg/sentry/fsimpl/host/socket.go
+2 -2
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@@ -192,7 +192,7 @@ func (c *ConnectedEndpoint) Writable() bool {
c.mu.RLock()
defer c.mu.RUnlock()
return fdnotifier.NonBlockingPoll(int32(c.fd), waiter.EventOut)&waiter.EventOut != 0
return fdnotifier.NonBlockingPoll(int32(c.fd), waiter.WritableEvents)&waiter.WritableEvents != 0
}
// Passcred implements transport.ConnectedEndpoint.Passcred.
@@ -282,7 +282,7 @@ func (c *ConnectedEndpoint) Readable() bool {
c.mu.RLock()
defer c.mu.RUnlock()
return fdnotifier.NonBlockingPoll(int32(c.fd), waiter.EventIn)&waiter.EventIn != 0
return fdnotifier.NonBlockingPoll(int32(c.fd), waiter.ReadableEvents)&waiter.ReadableEvents != 0
}
// SendQueuedSize implements transport.Receiver.SendQueuedSize.