tree 6d0795d33759c8080838d9f4e7622c3d0e82d1e0
parent 97b079703350ec0f6625788fb380f1fa14d0e2c4
author Peter Maydell <peter.maydell@linaro.org> 1468591048 +0100
committer Riku Voipio <riku.voipio@linaro.org> 1474457039 +0300

linux-user: Allow bad msg_name for recvfrom on connected socket

The POSIX standard mandates that for a connected socket recvfrom()
must ignore the msg_name and msg_namelen fields. This is awkward
for QEMU because we will attempt to copy them from guest address
space. Handle this by not immediately returning a TARGET_EFAULT
if the copy failed, but instead passing a known-bad address
to the host kernel, which can then return EFAULT or ignore the
value appropriately.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>