target: Make virtual_lun0 a nullio device

Nobody should be expecting to read or write virtual_lun0.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index ed679c9..8f4142f 100644 (file)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1544,7 +1544,7 @@ int core_dev_setup_virtual_lun0(void)
 {
        struct se_hba *hba;
        struct se_device *dev;
-       char buf[16];
+       char buf[] = "rd_pages=8,rd_nullio=1";
        int ret;
 
        hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE);
@@ -1557,8 +1557,6 @@ int core_dev_setup_virtual_lun0(void)
                goto out_free_hba;
        }
 
-       memset(buf, 0, 16);
-       sprintf(buf, "rd_pages=8");
        hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf));
 
        ret = target_configure_device(dev);