mount: Collect new type binfmt_misc.img image entries

v6: New
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/cr-restore.c

@@ -136,6 +136,9 @@ static int crtools_prepare_shared(void)
 	if (collect_inet_sockets())
 		return -1;
 
+	if (collect_binfmt_misc())
+		return -1;
+
 	if (tty_prep_fds())
 		return -1;
 

criu/include/mount.h

@@ -90,6 +90,7 @@ struct mount_info {
 
 extern struct mount_info *mntinfo;
 extern struct ns_desc mnt_ns_desc;
+extern int collect_binfmt_misc(void);
 
 extern struct mount_info *mnt_entry_alloc();
 extern void mnt_entry_free(struct mount_info *mi);

criu/mount.c

@@ -40,6 +40,12 @@
 #undef	LOG_PREFIX
 #define LOG_PREFIX "mnt: "
 
+struct binfmt_misc_info {
+	BinfmtMiscEntry *bme;
+	struct list_head list;
+};
+
+static LIST_HEAD(binfmt_misc_list);
 static struct fstype fstypes[];
 
 int ext_mount_add(char *key, char *val)
@@ -1537,6 +1543,29 @@ free_buf:
 	return ret;
 }
 
+static int collect_one_binfmt_misc_entry(void *o, ProtobufCMessage *msg, struct cr_img *img)
+{
+	struct binfmt_misc_info *bmi = o;
+
+	bmi->bme = pb_msg(msg, BinfmtMiscEntry);
+	list_add_tail(&bmi->list, &binfmt_misc_list);
+
+	return 0;
+}
+
+struct collect_image_info binfmt_misc_cinfo = {
+	.fd_type = CR_FD_BINFMT_MISC,
+	.pb_type = PB_BINFMT_MISC,
+	.priv_size = sizeof(struct binfmt_misc_info),
+	.collect = collect_one_binfmt_misc_entry,
+};
+
+int collect_binfmt_misc(void)
+{
+	return collect_image(&binfmt_misc_cinfo);
+}
+
+
 static int fusectl_dump(struct mount_info *pm)
 {
 	int fd, ret = -1;