| commit | 26a6fc96e0ca7522b855c2164bc6098240c286f6 | |
| author | Peter Maydell <peter.maydell@linaro.org> | |
| Fri, 15 Jul 2016 13:57:28 +0000 (15 14:57 +0100) | ||
| committer | Riku Voipio <riku.voipio@linaro.org> | |
| Wed, 21 Sep 2016 11:23:59 +0000 (21 14:23 +0300) | ||
| tree | 6d0795d33759c8080838d9f4e7622c3d0e82d1e0 | treesnapshot (tar.gz zip) |
| parent | 97b079703350ec0f6625788fb380f1fa14d0e2c4 | commitdiff |
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>
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>
| linux-user/syscall.c | diffblobblamehistory |