Al Viro 0dfe6581a7 get rid of compat_mc_getsockopt() ...

now we can do MCAST_MSFILTER in compat ->getsockopt() without
playing silly buggers with copying things back and forth.
We can form a native struct group_filter (sans the variable-length
tail) on stack, pass that + pointer to the tail of original request
to the helper doing the bulk of the work, then do the rest of
copyout - same as the native getsockopt() does.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2020-05-20 20:31:27 -04:00

20 KiB

Raw Blame History

View Raw