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

[Costin Lupu <costin.lupu@xxxxxxxxx>]

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;
-- 
2.20.1


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