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author | Philipp Matthias Schaefer <philipp.matthias.schaefer@posteo.de> | 2016-12-10 21:29:50 +0100 |
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committer | Philipp Matthias Schaefer <philipp.matthias.schaefer@posteo.de> | 2016-12-10 21:45:43 +0100 |
commit | 3faaca1ad2847ffb15fd7f42f63e10b3d85602fc (patch) | |
tree | 9353e00be3c23d236280b45d565b9b135bd4dbb9 /src/sys | |
parent | 2cfeb5758e1c4957acf4a8108a4c0793ef18a937 (diff) | |
download | nix-3faaca1ad2847ffb15fd7f42f63e10b3d85602fc.zip |
Fix ControlMessage::encode_into when encoding multiple messages
copy_bytes updates dst so that it points after the bytes that were just
copied into it. encode_into did not advance the buffer in the same way
when encoding the data.
Diffstat (limited to 'src/sys')
-rw-r--r-- | src/sys/socket/mod.rs | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs index e041e6b6..26f0739d 100644 --- a/src/sys/socket/mod.rs +++ b/src/sys/socket/mod.rs @@ -238,8 +238,13 @@ impl<'a> ControlMessage<'a> { let padlen = cmsg_align(mem::size_of_val(&cmsg)) - mem::size_of_val(&cmsg); - let buf2 = &mut &mut buf[padlen..]; - copy_bytes(fds, buf2); + + let mut tmpbuf = &mut [][..]; + mem::swap(&mut tmpbuf, buf); + let (_padding, mut remainder) = tmpbuf.split_at_mut(padlen); + mem::swap(buf, &mut remainder); + + copy_bytes(fds, buf); }, ControlMessage::Unknown(UnknownCmsg(orig_cmsg, bytes)) => { copy_bytes(orig_cmsg, buf); |