sockets: use weak aliases instead of qemu-tool.c

qemu-tool.c has its own (largeish) set of dependencies.  Weak aliases
can be placed directly where people use them, and do not contribute
to increasing the dependencies of generic utility files.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/qemu-sockets.c b/qemu-sockets.c
index cfed9c5a5b..225cd0c162 100644
--- a/qemu-sockets.c
+++ b/qemu-sockets.c
@@ -967,3 +967,10 @@ int socket_init(void)
 #endif
     return 0;
 }
+
+static int default_monitor_get_fd(Monitor *mon, const char *name, Error **errp)
+{
+    error_setg(errp, "only QEMU supports file descriptor passing");
+    return -1;
+}
+QEMU_WEAK_ALIAS(monitor_get_fd, default_monitor_get_fd);