// SPDX-License-Identifier: GPL-2.0 /* Copyright Intel Corp. 2018 */ #include <linux/init.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/nd.h> #include "pmem.h" #include "pfn.h" #include "nd.h" #include "nd-core.h" ssize_t security_show(struct device *dev, struct device_attribute *attr, char *buf) { struct nvdimm *nvdimm = to_nvdimm(dev); /* * For the test version we need to poll the "hardware" in order * to get the updated status for unlock testing. */ nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) return sprintf(buf, "disabled\n"); if (test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.flags)) return sprintf(buf, "unlocked\n"); if (test_bit(NVDIMM_SECURITY_LOCKED, &nvdimm->sec.flags)) return sprintf(buf, "locked\n"); return -ENOTTY; }