io_uring: add support for recvmsg()

[mirror_ubuntu-jammy-kernel.git] / fs / io_uring.c

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 5d4cd8c4132dcf16e48d44ba5cfe7ea82561facb..8d86e31b0762da2d5189483fe13b1c20fd7eae1d 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1390,10 +1390,12 @@ static int io_sync_file_range(struct io_kiocb *req,
        return 0;
 }
 
-static int io_sendmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
-                     bool force_nonblock)
-{
 #if defined(CONFIG_NET)
+static int io_send_recvmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+                          bool force_nonblock,
+                  long (*fn)(struct socket *, struct user_msghdr __user *,
+                               unsigned int))
+{
        struct socket *sock;
        int ret;
 
@@ -1414,7 +1416,7 @@ static int io_sendmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
                msg = (struct user_msghdr __user *) (unsigned long)
                        READ_ONCE(sqe->addr);
 
-               ret = __sys_sendmsg_sock(sock, msg, flags);
+               ret = fn(sock, msg, flags);
                if (force_nonblock && ret == -EAGAIN)
                        return ret;
        }
@@ -1422,6 +1424,24 @@ static int io_sendmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
        io_cqring_add_event(req->ctx, sqe->user_data, ret);
        io_put_req(req);
        return 0;
+}
+#endif
+
+static int io_sendmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+                     bool force_nonblock)
+{
+#if defined(CONFIG_NET)
+       return io_send_recvmsg(req, sqe, force_nonblock, __sys_sendmsg_sock);
+#else
+       return -EOPNOTSUPP;
+#endif
+}
+
+static int io_recvmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+                     bool force_nonblock)
+{
+#if defined(CONFIG_NET)
+       return io_send_recvmsg(req, sqe, force_nonblock, __sys_recvmsg_sock);
 #else
        return -EOPNOTSUPP;
 #endif
@@ -1715,6 +1735,9 @@ static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
        case IORING_OP_SENDMSG:
                ret = io_sendmsg(req, s->sqe, force_nonblock);
                break;
+       case IORING_OP_RECVMSG:
+               ret = io_recvmsg(req, s->sqe, force_nonblock);
+               break;
        default:
                ret = -EINVAL;
                break;