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authorRich Felker <dalias@aerifal.cx>2012-07-12 21:37:54 -0400
committerRich Felker <dalias@aerifal.cx>2012-07-12 21:37:54 -0400
commit96107564e2eabbc13800fe7a7d930b67216d0805 (patch)
treec46507f195ab69f3ffacfdeca118e337e097849e /arch/arm/bits
parent90e123f4a810d17c6bd8c2102939f6416481427e (diff)
downloadmusl-96107564e2eabbc13800fe7a7d930b67216d0805.tar.gz
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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.
Diffstat (limited to 'arch/arm/bits')
-rw-r--r--arch/arm/bits/socket.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/bits/socket.h b/arch/arm/bits/socket.h
index c464ed90..36febbc2 100644
--- a/arch/arm/bits/socket.h
+++ b/arch/arm/bits/socket.h
@@ -8,3 +8,10 @@ struct msghdr
 	socklen_t msg_controllen;
 	int msg_flags;
 };
+
+struct cmsghdr
+{
+	socklen_t cmsg_len;
+	int cmsg_level;
+	int cmsg_type;
+};