[draft] support of bindmounted unix dgram sockets

criu/include/sockets.h

@@ -10,6 +10,7 @@
 
 struct fdinfo_list_entry;
 struct sk_opts_entry;
+struct mount_info;
 struct file_desc;
 struct fd_parms;
 struct cr_imgset;
@@ -44,6 +45,7 @@ extern int fix_external_unix_sockets(void);
 extern int prepare_scms(void);
 extern int unix_note_scm_rights(int id_for, uint32_t *file_ids, int *fds, int n_ids);
 extern int collect_unix_bindmounts(void);
+extern int unix_prepare_bindmount(struct mount_info *mi);
 
 extern struct collect_image_info netlink_sk_cinfo;
 

criu/mount.c

@@ -28,6 +28,7 @@
 #include "clone-noasan.h"
 #include "fdstore.h"
 
+#include "sockets.h"
 #include "images/mnt.pb-c.h"
 
 /*
@@ -2615,6 +2616,13 @@ static int try_remap_mount(struct mount_info *m)
 	struct mnt_remap_entry *r;
 
 	if (!mnt_needs_remap(m))
+
+	if (unix_prepare_bindmount(mi)) {
+		pr_err("Failed to prepare bindmount on unix at %s\n",
+		       mi->mountpoint);
+		goto err;
+	}
+
 		return 0;
 
 	BUG_ON(!m->parent);