net: socket: remove net_init_socket()

Move the file descriptor type checking before doing anything with it.
If it's not usable, don't close it as it could be in use by another
part of QEMU, only fail and report an error.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

diff --git a/net/socket.c b/net/socket.c
index 6b1f0fec3a10cb1049f8ca25c7b28ee1a4dd4e15..8e3702e1f3a87f4a24e34df400b71e02a4461b4b 100644 (file)
--- a/net/socket.c
+++ b/net/socket.c
@@ -463,28 +463,6 @@ static int net_socket_fd_check(int fd, Error **errp)
     return so_type;
 }
 
-static NetSocketState *net_socket_fd_init(NetClientState *peer,
-                                          const char *model, const char *name,
-                                          int fd, int is_connected,
-                                          const char *mc, Error **errp)
-{
-    int so_type;
-
-    so_type = net_socket_fd_check(fd, errp);
-    if (so_type < 0) {
-        close(fd);
-        return NULL;
-    }
-    switch(so_type) {
-    case SOCK_DGRAM:
-        return net_socket_fd_init_dgram(peer, model, name, fd, is_connected,
-                                        mc, errp);
-    case SOCK_STREAM:
-        return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
-    }
-    return NULL;
-}
-
 static void net_socket_accept(void *opaque)
 {
     NetSocketState *s = opaque;
@@ -728,21 +706,34 @@ int net_init_socket(const Netdev *netdev, const char *name,
     }
 
     if (sock->fd) {
-        int fd, ret;
+        int fd, ret, so_type;
 
         fd = monitor_fd_param(monitor_cur(), sock->fd, errp);
         if (fd == -1) {
             return -1;
         }
+        so_type = net_socket_fd_check(fd, errp);
+        if (so_type < 0) {
+            return -1;
+        }
         ret = qemu_socket_try_set_nonblock(fd);
         if (ret < 0) {
             error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
                              name, fd);
             return -1;
         }
-        if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast,
-                                errp)) {
-            return -1;
+        switch (so_type) {
+        case SOCK_DGRAM:
+            if (!net_socket_fd_init_dgram(peer, "socket", name, fd, 1,
+                                          sock->mcast, errp)) {
+                return -1;
+            }
+            break;
+        case SOCK_STREAM:
+            if (!net_socket_fd_init_stream(peer, "socket", name, fd, 1)) {
+                return -1;
+            }
+            break;
         }
         return 0;
     }