Date: Tue, 23 Jan 2018 04:02:51 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Konstantin Belousov <kostikbel@gmail.com>, Li-Wen Hsu <lwhsu@freebsd.org> Cc: Yuri Pankov <yuripv@icloud.com>, freebsd-hackers@freebsd.org Subject: Re: Calling getaddrinfo(3) in 32-bit binary on 64-bit host Message-ID: <5A66517B.4040802@grosbein.net> In-Reply-To: <20180122192925.GI55707@kib.kiev.ua> References: <CAKBkRUx14r%2B%2BZ-n64SNDd4uu=hoJv-KaXxeyUGM7f%2BDS2Ha%2BmQ@mail.gmail.com> <8c6dc5b5-7640-61fc-b687-08efd1e621ee@icloud.com> <20180122154709.GF55707@kib.kiev.ua> <CAKBkRUz6vt_ynoENce%2BL6G05O4vjS4Z31Cq4wG6px1KMJQDCew@mail.gmail.com> <20180122192925.GI55707@kib.kiev.ua>
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23.01.2018 2:29, Konstantin Belousov пишет: > On Tue, Jan 23, 2018 at 02:55:24AM +0800, Li-Wen Hsu wrote: >> I'll try to find other uses of SA_SIZE() and see if they would be run in >> compat32 mode and works or not. > There are enough uses of SA_SIZE() by functions which are perhaps called > both from a sysctl handler and for queuing the routing messages into routing > socket queue. In the later case, we cannot know ABI of the reader. This > is what I referenced when I noted that routing socket's ABI compat is > impossible to implement correctly. Can't we supply sysctl handler with some kind of back reference to original userland caller of the syscall to find its ABI?
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