Re: [Minios-devel] [UNIKRAFT/LWIP PATCH 3/5] sockets: Add recvmsg() function

[Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>]

Reviewed-by: Vlad-Andrei Badoiu <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>

On 04.09.2019 22:09, Costin Lupu wrote:
> Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
> ---
>   exportsyms.uk        |  1 +
>   include/sys/socket.h |  1 +
>   sockets.c            | 19 +++++++++++++++++++
>   3 files changed, 21 insertions(+)
>
> diff --git a/exportsyms.uk b/exportsyms.uk
> index 1ca43f8..2f9f4f6 100644
> --- a/exportsyms.uk
> +++ b/exportsyms.uk
> @@ -38,6 +38,7 @@ pbuf_ref
>   poll
>   recv
>   recvfrom
> +recvmsg
>   select
>   send
>   sendmsg
> diff --git a/include/sys/socket.h b/include/sys/socket.h
> index aff064e..7e027b9 100644
> --- a/include/sys/socket.h
> +++ b/include/sys/socket.h
> @@ -70,6 +70,7 @@ int listen(int s, int backlog);
>   int recv(int s, void *mem, size_t len, int flags);
>   int recvfrom(int s, void *mem, size_t len, int flags,
>            struct sockaddr *from, socklen_t *fromlen);
> +int recvmsg(int s, struct msghdr *msg, int flags);
>   int send(int s, const void *dataptr, size_t size, int flags);
>   int sendmsg(int s, const struct msghdr *message, int flags);
>   int sendto(int s, const void *dataptr, size_t size, int flags,
> diff --git a/sockets.c b/sockets.c
> index aa772da..1806846 100644
> --- a/sockets.c
> +++ b/sockets.c
> @@ -755,6 +755,25 @@ EXIT:
>       return ret;
>   }
>   
> +int recvmsg(int s, struct msghdr *msg, int flags)
> +{
> +     int ret = 0;
> +     struct sock_net_file *file = NULL;
> +
> +     file = sock_net_file_get(s);
> +     if (PTRISERR(file)) {
> +             LWIP_DEBUGF(SOCKETS_DEBUG,
> +                         ("failed to identify socket descriptor\n"));
> +             ret = -1;
> +             SOCK_NET_SET_ERRNO(PTR2ERR(file));
> +             goto EXIT;
> +     }
> +     ret = lwip_recvmsg(file->sock_fd, msg, flags);
> +     vfscore_put_file(file->vfscore_file); /* release refcount */
> +EXIT:
> +     return ret;
> +}
> +
>   int send(int s, const void *dataptr, size_t size, int flags)
>   {
>       int ret = 0;
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