Tim Robbins wrote: > On Fri, Jan 10, 2003 at 01:30:16AM -0800, Juli Mallett wrote: > > > Lately, the data field for sockets, which holds bytes ready (in the EVFILT_ > > READ case) to be read, is computed to be zero. This means that if you have > > a low watermark which is >0 per the kq, THE EVENT WILL NEVER HAPPEN. Not t o > > mention that this means when the event IS triggered properly (if you can > > call it that), it is always said to have =ZERO= bytes ready. > [...] > > I can definitely reproduce this here and also fairly angry about it. > In addition to what you mentioned, fstat() gives an incorrect st_size > result now and it's likely that non-NOTE_LOWAT low watermarks are > firing too early as well. > > Ugly test program @ http://people.freebsd.org/~tjr/kq.c
In case anybody wants to play, I seem to recall some changes in uipc_socket.c that caused some problems (totally hosed the resolver) a while back: ---------------------------- revision 1.134 date: 2002/11/01 21:27:59; author: kbyanc; state: Exp; lines: +1 -1 Track the number of non-data chararacters stored in socket buffers so that the data value returned by kevent()'s EVFILT_READ filter on non-TCP sockets accurately reflects the amount of data that can be read from the sockets by applications. PR: 30634 Reviewed by: -net, -arch Sponsored by: NTT Multimedia Communications Labs MFC after: 2 weeks ---------------------------- revision 1.136 date: 2002/11/05 18:48:46; author: kbyanc; state: Exp; lines: +1 -1 Fix filt_soread() to properly flag a kevent when a 0-byte datagram is received. Verified by: dougb, Manfred Antar <[EMAIL PROTECTED]> Sponsored by: NTT Multimedia Communications Labs ---------------------------- Is this related? Cheers, -Peter -- Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message