| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* Copyright Intel Corp. 2018 */ |
| 3 | #include <linux/init.h> |
| 4 | #include <linux/module.h> |
| 5 | #include <linux/moduleparam.h> |
| 6 | #include <linux/nd.h> |
| 7 | #include "pmem.h" |
| 8 | #include "pfn.h" |
| 9 | #include "nd.h" |
| 10 | #include "nd-core.h" |
| 11 | |
| 12 | ssize_t security_show(struct device *dev, |
| 13 | struct device_attribute *attr, char *buf) |
| 14 | { |
| 15 | struct nvdimm *nvdimm = to_nvdimm(dev); |
| 16 | |
| 17 | /* |
| 18 | * For the test version we need to poll the "hardware" in order |
| 19 | * to get the updated status for unlock testing. |
| 20 | */ |
| 21 | nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); |
| 22 | |
| 23 | if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) |
| 24 | return sprintf(buf, "disabled\n"); |
| 25 | if (test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.flags)) |
| 26 | return sprintf(buf, "unlocked\n"); |
| 27 | if (test_bit(NVDIMM_SECURITY_LOCKED, &nvdimm->sec.flags)) |
| 28 | return sprintf(buf, "locked\n"); |
| 29 | return -ENOTTY; |
| 30 | } |