Author :
Nick Mathewson
Date :
2010-10-05 21:34:07
Hash :fdc640b0 Message :Fix an EINVAL on evbuffer_write_iovec on OpenSolaris.
The writev() call is limited to at most IOV_MAX iovecs (or UIO_MAXIOV,
depending on whom you ask). This isn't a problem anywhere we've
tested except on OpenSolaris, where IOV_MAX was a mere 16.
This patch makes us go from "use up to 128 iovecs when writing" to
"use up to 128 iovecs when writing, or IOV_MAX/UIO_MAXIOV, whichever
is less". This is still wrong if you somehow find a platform that
defines IOV_MAX < UIO_MAXIOV, but I hereby claim that such a platform
is too stupid to worry about for now.
Found by Michael Herf.
Nick Mathewson