On Aug 14, 2014, at 1:34 PM, Fernando Gont <ferna...@gont.com.ar> wrote:
> While trying to select() on a pcap descriptor in solaris Which version? Solaris 11 (in which pcap descriptors should refer to BPF devices), or earlier (in which pcap descriptors should refer to DLPI STREAMS devices)? > I found the following: > > 1) It seems that pcap descriptors are never readable or writeable. (-- > This is different from *BSD and Linux, where at least you seem to be > able to check for readability) > > 2) It would seem that even trying to select() on such descriptors causes > trouble. For example, I get a kind of random "Bad file number" error > from select when I try to check for readability/writeability. I wouldn't expect that prior to Solaris 11 - select() and poll() Just Work on STREAMS devices, as I remember. It could, however, be that Sun^WOracle screwed up with BPF; unfortunately, Solaris 11 is ClosedSolaris, so I can't just look at the source and see what they did wrong. I'll try this on my Solaris 11 virtual machine. > Is the above assessment correct? Should I not even try to call select() > on pcap descriptors in Solaris? If they screwed up on Solaris 11, you probably shouldn't try to call select(); instead, you should try to call Oracle and report this as a bug (and tell them that, if they fix this, they should fix it so that if you have a timeout set with BIOCSRTIMEOUT, the timer should start as soon as a select() or poll() is done, so that, when the timeout expires, it can report the descriptor as readable - the original BPF didn't do that, and all the *BSDs and OS X eventually fixed it). _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
