From 96107564e2eabbc13800fe7a7d930b67216d0805 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 12 Jul 2012 21:37:54 -0400 Subject: workaround another sendmsg kernel bug on 64-bit machines the kernel wrongly expects the cmsg length field to be size_t instead of socklen_t. in order to work around the issue, we have to impose a length limit and copy to a local buffer. the length limit should be more than sufficient for any real-world use; these headers are only used for passing file descriptors and permissions between processes over unix sockets. --- arch/x86_64/bits/socket.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/x86_64') diff --git a/arch/x86_64/bits/socket.h b/arch/x86_64/bits/socket.h index 878ab117..a90c4cae 100644 --- a/arch/x86_64/bits/socket.h +++ b/arch/x86_64/bits/socket.h @@ -8,3 +8,11 @@ struct msghdr socklen_t msg_controllen, __pad2; int msg_flags; }; + +struct cmsghdr +{ + socklen_t cmsg_len; + int __pad1; + int cmsg_level; + int cmsg_type; +}; -- cgit v1.2.1