Re: [Qemu-devel] [PATCH] linux-user: fix emulation of accept4/getpeername/getsockname/recvfrom syscalls

[Laurent Vivier]

On 07/02/2019 15:51, Andreas Schwab wrote:
> System calls that return a socket address do so by writing the (possibly
> truncated) address into the provided buffer space, but setting the addrlen
> parameter to the actual size of the address.  To determine how much to
> copy back to the target memory the emulation needs to remember the old
> value of the addrlen parameter, so that it doesn't write past the buffer
> limits.
> 
> Signed-off-by: Andreas Schwab <address@hidden>
> ---
>  linux-user/syscall.c | 38 ++++++++++++++++++++++----------------
>  1 file changed, 22 insertions(+), 16 deletions(-)

Reviewed-by: Laurent Vivier <address@hidden>