Cyril wrote:
And if the system can't use select() *and* the packet capture mechanism
doesn't support a timeout ?
The only UN*X systems I know of where select() can't be used are
FreeBSD 4.3 and 4.4 (due to BPF deficiencies fixed in 4.5);
OS X 10.4[.x] (due to select() not working on *any* character special
files);
and, on both of them, the packet capture mechanism supports a timeout.
Linux and Irix should support it because they implement capturing with a
socket, and select() is, as far as I know, implemented on the socket
layer and works on all sockets. SunOS 4.x, SunOS 5.x, and HP-UX should
support it because they implement capturing on STREAMS devices, and
select(), as I remember, is implemented at the stream head layer and
should work on all STREAMS devices. As I remember, I tried it on
Digital UNIX and it worked; I haven't tried it on SunOS 3.x or earlier.
I don't remember whether I tried it on AIX; it *might* not work there.
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