// 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.state = nvdimm_security_state(nvdimm, NVDIMM_USER); nvdimm->sec.ext_state = nvdimm_security_state(nvdimm, NVDIMM_MASTER); switch (nvdimm->sec.state) { case NVDIMM_SECURITY_DISABLED: return sprintf(buf, "disabled\n"); case NVDIMM_SECURITY_UNLOCKED: return sprintf(buf, "unlocked\n"); case NVDIMM_SECURITY_LOCKED: return sprintf(buf, "locked\n"); case NVDIMM_SECURITY_FROZEN: return sprintf(buf, "frozen\n"); case NVDIMM_SECURITY_OVERWRITE: return sprintf(buf, "overwrite\n"); default: return -ENOTTY; } return -ENOTTY; }