diff options
-rw-r--r-- | drivers/acpi/nfit/intel.c | 59 | ||||
-rw-r--r-- | drivers/nvdimm/bus.c | 2 | ||||
-rw-r--r-- | drivers/nvdimm/dimm_devs.c | 59 | ||||
-rw-r--r-- | drivers/nvdimm/nd-core.h | 21 | ||||
-rw-r--r-- | drivers/nvdimm/security.c | 99 | ||||
-rw-r--r-- | include/linux/libnvdimm.h | 9 | ||||
-rw-r--r-- | tools/testing/nvdimm/dimm_devs.c | 19 |
7 files changed, 141 insertions, 127 deletions
diff --git a/drivers/acpi/nfit/intel.c b/drivers/acpi/nfit/intel.c index cddd0fcf622c..1113b679cd7b 100644 --- a/drivers/acpi/nfit/intel.c +++ b/drivers/acpi/nfit/intel.c @@ -7,10 +7,11 @@ #include "intel.h" #include "nfit.h" -static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm, +static unsigned long intel_security_flags(struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype) { struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); + unsigned long security_flags = 0; struct { struct nd_cmd_pkg pkg; struct nd_intel_get_security_state cmd; @@ -27,7 +28,7 @@ static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm, int rc; if (!test_bit(NVDIMM_INTEL_GET_SECURITY_STATE, &nfit_mem->dsm_mask)) - return -ENXIO; + return 0; /* * Short circuit the state retrieval while we are doing overwrite. @@ -35,38 +36,42 @@ static enum nvdimm_security_state intel_security_state(struct nvdimm *nvdimm, * until the overwrite DSM completes. */ if (nvdimm_in_overwrite(nvdimm) && ptype == NVDIMM_USER) - return NVDIMM_SECURITY_OVERWRITE; + return BIT(NVDIMM_SECURITY_OVERWRITE); rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL); - if (rc < 0) - return rc; - if (nd_cmd.cmd.status) - return -EIO; + if (rc < 0 || nd_cmd.cmd.status) { + pr_err("%s: security state retrieval failed (%d:%#x)\n", + nvdimm_name(nvdimm), rc, nd_cmd.cmd.status); + return 0; + } /* check and see if security is enabled and locked */ if (ptype == NVDIMM_MASTER) { if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_ENABLED) - return NVDIMM_SECURITY_UNLOCKED; - else if (nd_cmd.cmd.extended_state & - ND_INTEL_SEC_ESTATE_PLIMIT) - return NVDIMM_SECURITY_FROZEN; - } else { - if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_UNSUPPORTED) - return -ENXIO; - else if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_ENABLED) { - if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_LOCKED) - return NVDIMM_SECURITY_LOCKED; - else if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_FROZEN - || nd_cmd.cmd.state & - ND_INTEL_SEC_STATE_PLIMIT) - return NVDIMM_SECURITY_FROZEN; - else - return NVDIMM_SECURITY_UNLOCKED; - } + set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags); + else + set_bit(NVDIMM_SECURITY_DISABLED, &security_flags); + if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_PLIMIT) + set_bit(NVDIMM_SECURITY_FROZEN, &security_flags); + return security_flags; } - /* this should cover master security disabled as well */ - return NVDIMM_SECURITY_DISABLED; + if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_UNSUPPORTED) + return 0; + + if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_ENABLED) { + if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_FROZEN || + nd_cmd.cmd.state & ND_INTEL_SEC_STATE_PLIMIT) + set_bit(NVDIMM_SECURITY_FROZEN, &security_flags); + + if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_LOCKED) + set_bit(NVDIMM_SECURITY_LOCKED, &security_flags); + else + set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags); + } else + set_bit(NVDIMM_SECURITY_DISABLED, &security_flags); + + return security_flags; } static int intel_security_freeze(struct nvdimm *nvdimm) @@ -371,7 +376,7 @@ static void nvdimm_invalidate_cache(void) #endif static const struct nvdimm_security_ops __intel_security_ops = { - .state = intel_security_state, + .get_flags = intel_security_flags, .freeze = intel_security_freeze, .change_key = intel_security_change_key, .disable = intel_security_disable, diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 798c5c4aea9c..29479d3b01b0 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -400,7 +400,7 @@ static int child_unregister(struct device *dev, void *data) /* We are shutting down. Make state frozen artificially. */ nvdimm_bus_lock(dev); - nvdimm->sec.state = NVDIMM_SECURITY_FROZEN; + set_bit(NVDIMM_SECURITY_FROZEN, &nvdimm->sec.flags); if (test_and_clear_bit(NDD_WORK_PENDING, &nvdimm->flags)) dev_put = true; nvdimm_bus_unlock(dev); diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index 29a065e769ea..53330625fe07 100644 --- a/drivers/nvdimm/dimm_devs.c +++ b/drivers/nvdimm/dimm_devs.c @@ -372,24 +372,27 @@ __weak ssize_t security_show(struct device *dev, { struct nvdimm *nvdimm = to_nvdimm(dev); - switch (nvdimm->sec.state) { - case NVDIMM_SECURITY_DISABLED: + if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) return sprintf(buf, "disabled\n"); - case NVDIMM_SECURITY_UNLOCKED: + if (test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.flags)) return sprintf(buf, "unlocked\n"); - case NVDIMM_SECURITY_LOCKED: + if (test_bit(NVDIMM_SECURITY_LOCKED, &nvdimm->sec.flags)) return sprintf(buf, "locked\n"); - case NVDIMM_SECURITY_FROZEN: - return sprintf(buf, "frozen\n"); - case NVDIMM_SECURITY_OVERWRITE: + if (test_bit(NVDIMM_SECURITY_OVERWRITE, &nvdimm->sec.flags)) return sprintf(buf, "overwrite\n"); - default: - return -ENOTTY; - } - return -ENOTTY; } +static ssize_t frozen_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nvdimm *nvdimm = to_nvdimm(dev); + + return sprintf(buf, "%d\n", test_bit(NVDIMM_SECURITY_FROZEN, + &nvdimm->sec.flags)); +} +static DEVICE_ATTR_RO(frozen); + #define OPS \ C( OP_FREEZE, "freeze", 1), \ C( OP_DISABLE, "disable", 2), \ @@ -501,6 +504,7 @@ static struct attribute *nvdimm_attributes[] = { &dev_attr_commands.attr, &dev_attr_available_slots.attr, &dev_attr_security.attr, + &dev_attr_frozen.attr, NULL, }; @@ -509,17 +513,24 @@ static umode_t nvdimm_visible(struct kobject *kobj, struct attribute *a, int n) struct device *dev = container_of(kobj, typeof(*dev), kobj); struct nvdimm *nvdimm = to_nvdimm(dev); - if (a != &dev_attr_security.attr) + if (a != &dev_attr_security.attr && a != &dev_attr_frozen.attr) return a->mode; - if (nvdimm->sec.state < 0) + if (!nvdimm->sec.flags) return 0; - /* Are there any state mutation ops? */ - if (nvdimm->sec.ops->freeze || nvdimm->sec.ops->disable - || nvdimm->sec.ops->change_key - || nvdimm->sec.ops->erase - || nvdimm->sec.ops->overwrite) + + if (a == &dev_attr_security.attr) { + /* Are there any state mutation ops (make writable)? */ + if (nvdimm->sec.ops->freeze || nvdimm->sec.ops->disable + || nvdimm->sec.ops->change_key + || nvdimm->sec.ops->erase + || nvdimm->sec.ops->overwrite) + return a->mode; + return 0444; + } + + if (nvdimm->sec.ops->freeze) return a->mode; - return 0444; + return 0; } struct attribute_group nvdimm_attribute_group = { @@ -569,8 +580,8 @@ struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus, * attribute visibility. */ /* get security state and extended (master) state */ - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); - nvdimm->sec.ext_state = nvdimm_security_state(nvdimm, NVDIMM_MASTER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); + nvdimm->sec.ext_flags = nvdimm_security_flags(nvdimm, NVDIMM_MASTER); nd_device_register(dev); return nvdimm; @@ -588,7 +599,7 @@ int nvdimm_security_setup_events(struct device *dev) { struct nvdimm *nvdimm = to_nvdimm(dev); - if (nvdimm->sec.state < 0 || !nvdimm->sec.ops + if (!nvdimm->sec.flags || !nvdimm->sec.ops || !nvdimm->sec.ops->overwrite) return 0; nvdimm->sec.overwrite_state = sysfs_get_dirent(dev->kobj.sd, "security"); @@ -614,7 +625,7 @@ int nvdimm_security_freeze(struct nvdimm *nvdimm) if (!nvdimm->sec.ops || !nvdimm->sec.ops->freeze) return -EOPNOTSUPP; - if (nvdimm->sec.state < 0) + if (!nvdimm->sec.flags) return -EIO; if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { @@ -623,7 +634,7 @@ int nvdimm_security_freeze(struct nvdimm *nvdimm) } rc = nvdimm->sec.ops->freeze(nvdimm); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return rc; } diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h index 0ac52b6eb00e..da2bbfd56d9f 100644 --- a/drivers/nvdimm/nd-core.h +++ b/drivers/nvdimm/nd-core.h @@ -39,21 +39,32 @@ struct nvdimm { const char *dimm_id; struct { const struct nvdimm_security_ops *ops; - enum nvdimm_security_state state; - enum nvdimm_security_state ext_state; + unsigned long flags; + unsigned long ext_flags; unsigned int overwrite_tmo; struct kernfs_node *overwrite_state; } sec; struct delayed_work dwork; }; -static inline enum nvdimm_security_state nvdimm_security_state( +static inline unsigned long nvdimm_security_flags( struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype) { + u64 flags; + const u64 state_flags = 1UL << NVDIMM_SECURITY_DISABLED + | 1UL << NVDIMM_SECURITY_LOCKED + | 1UL << NVDIMM_SECURITY_UNLOCKED + | 1UL << NVDIMM_SECURITY_OVERWRITE; + if (!nvdimm->sec.ops) - return -ENXIO; + return 0; - return nvdimm->sec.ops->state(nvdimm, ptype); + flags = nvdimm->sec.ops->get_flags(nvdimm, ptype); + /* disabled, locked, unlocked, and overwrite are mutually exclusive */ + dev_WARN_ONCE(&nvdimm->dev, hweight64(flags & state_flags) > 1, + "reported invalid security state: %#llx\n", + (unsigned long long) flags); + return flags; } int nvdimm_security_freeze(struct nvdimm *nvdimm); #if IS_ENABLED(CONFIG_NVDIMM_KEYS) diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c index a570f2263a42..5862d0eee9db 100644 --- a/drivers/nvdimm/security.c +++ b/drivers/nvdimm/security.c @@ -158,7 +158,7 @@ static int nvdimm_key_revalidate(struct nvdimm *nvdimm) } nvdimm_put_key(key); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return 0; } @@ -174,7 +174,7 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm) lockdep_assert_held(&nvdimm_bus->reconfig_mutex); if (!nvdimm->sec.ops || !nvdimm->sec.ops->unlock - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return -EIO; if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { @@ -189,7 +189,7 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm) * freeze of the security configuration. I.e. if the OS does not * have the key, security is being managed pre-OS. */ - if (nvdimm->sec.state == NVDIMM_SECURITY_UNLOCKED) { + if (test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.flags)) { if (!key_revalidate) return 0; @@ -202,7 +202,7 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm) rc == 0 ? "success" : "fail"); nvdimm_put_key(key); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return rc; } @@ -217,6 +217,24 @@ int nvdimm_security_unlock(struct device *dev) return rc; } +static int check_security_state(struct nvdimm *nvdimm) +{ + struct device *dev = &nvdimm->dev; + + if (test_bit(NVDIMM_SECURITY_FROZEN, &nvdimm->sec.flags)) { + dev_dbg(dev, "Incorrect security state: %#lx\n", + nvdimm->sec.flags); + return -EIO; + } + + if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { + dev_dbg(dev, "Security operation in progress.\n"); + return -EBUSY; + } + + return 0; +} + int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid) { struct device *dev = &nvdimm->dev; @@ -229,19 +247,12 @@ int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid) lockdep_assert_held(&nvdimm_bus->reconfig_mutex); if (!nvdimm->sec.ops || !nvdimm->sec.ops->disable - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return -EOPNOTSUPP; - if (nvdimm->sec.state >= NVDIMM_SECURITY_FROZEN) { - dev_dbg(dev, "Incorrect security state: %d\n", - nvdimm->sec.state); - return -EIO; - } - - if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { - dev_dbg(dev, "Security operation in progress.\n"); - return -EBUSY; - } + rc = check_security_state(nvdimm); + if (rc) + return rc; data = nvdimm_get_user_key_payload(nvdimm, keyid, NVDIMM_BASE_KEY, &key); @@ -253,7 +264,7 @@ int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid) rc == 0 ? "success" : "fail"); nvdimm_put_key(key); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return rc; } @@ -271,14 +282,12 @@ int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid, lockdep_assert_held(&nvdimm_bus->reconfig_mutex); if (!nvdimm->sec.ops || !nvdimm->sec.ops->change_key - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return -EOPNOTSUPP; - if (nvdimm->sec.state >= NVDIMM_SECURITY_FROZEN) { - dev_dbg(dev, "Incorrect security state: %d\n", - nvdimm->sec.state); - return -EIO; - } + rc = check_security_state(nvdimm); + if (rc) + return rc; data = nvdimm_get_user_key_payload(nvdimm, keyid, NVDIMM_BASE_KEY, &key); @@ -301,10 +310,10 @@ int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid, nvdimm_put_key(newkey); nvdimm_put_key(key); if (pass_type == NVDIMM_MASTER) - nvdimm->sec.ext_state = nvdimm_security_state(nvdimm, + nvdimm->sec.ext_flags = nvdimm_security_flags(nvdimm, NVDIMM_MASTER); else - nvdimm->sec.state = nvdimm_security_state(nvdimm, + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return rc; } @@ -322,7 +331,7 @@ int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid, lockdep_assert_held(&nvdimm_bus->reconfig_mutex); if (!nvdimm->sec.ops || !nvdimm->sec.ops->erase - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return -EOPNOTSUPP; if (atomic_read(&nvdimm->busy)) { @@ -330,18 +339,11 @@ int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid, return -EBUSY; } - if (nvdimm->sec.state >= NVDIMM_SECURITY_FROZEN) { - dev_dbg(dev, "Incorrect security state: %d\n", - nvdimm->sec.state); - return -EIO; - } - - if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { - dev_dbg(dev, "Security operation in progress.\n"); - return -EBUSY; - } + rc = check_security_state(nvdimm); + if (rc) + return rc; - if (nvdimm->sec.ext_state != NVDIMM_SECURITY_UNLOCKED + if (!test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.ext_flags) && pass_type == NVDIMM_MASTER) { dev_dbg(dev, "Attempt to secure erase in wrong master state.\n"); @@ -359,7 +361,7 @@ int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid, rc == 0 ? "success" : "fail"); nvdimm_put_key(key); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); return rc; } @@ -375,7 +377,7 @@ int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid) lockdep_assert_held(&nvdimm_bus->reconfig_mutex); if (!nvdimm->sec.ops || !nvdimm->sec.ops->overwrite - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return -EOPNOTSUPP; if (atomic_read(&nvdimm->busy)) { @@ -388,16 +390,9 @@ int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid) return -EINVAL; } - if (nvdimm->sec.state >= NVDIMM_SECURITY_FROZEN) { - dev_dbg(dev, "Incorrect security state: %d\n", - nvdimm->sec.state); - return -EIO; - } - - if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) { - dev_dbg(dev, "Security operation in progress.\n"); - return -EBUSY; - } + rc = check_security_state(nvdimm); + if (rc) + return rc; data = nvdimm_get_user_key_payload(nvdimm, keyid, NVDIMM_BASE_KEY, &key); @@ -412,7 +407,7 @@ int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid) if (rc == 0) { set_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags); set_bit(NDD_WORK_PENDING, &nvdimm->flags); - nvdimm->sec.state = NVDIMM_SECURITY_OVERWRITE; + set_bit(NVDIMM_SECURITY_OVERWRITE, &nvdimm->sec.flags); /* * Make sure we don't lose device while doing overwrite * query. @@ -443,7 +438,7 @@ void __nvdimm_security_overwrite_query(struct nvdimm *nvdimm) tmo = nvdimm->sec.overwrite_tmo; if (!nvdimm->sec.ops || !nvdimm->sec.ops->query_overwrite - || nvdimm->sec.state < 0) + || !nvdimm->sec.flags) return; rc = nvdimm->sec.ops->query_overwrite(nvdimm); @@ -467,8 +462,8 @@ void __nvdimm_security_overwrite_query(struct nvdimm *nvdimm) clear_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags); clear_bit(NDD_WORK_PENDING, &nvdimm->flags); put_device(&nvdimm->dev); - nvdimm->sec.state = nvdimm_security_state(nvdimm, NVDIMM_USER); - nvdimm->sec.ext_state = nvdimm_security_state(nvdimm, NVDIMM_MASTER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_MASTER); } void nvdimm_security_overwrite_query(struct work_struct *work) diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index 7a64b3ddb408..b6eddf912568 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -160,8 +160,11 @@ static inline struct nd_blk_region_desc *to_blk_region_desc( } -enum nvdimm_security_state { - NVDIMM_SECURITY_ERROR = -1, +/* + * Note that separate bits for locked + unlocked are defined so that + * 'flags == 0' corresponds to an error / not-supported state. + */ +enum nvdimm_security_bits { NVDIMM_SECURITY_DISABLED, NVDIMM_SECURITY_UNLOCKED, NVDIMM_SECURITY_LOCKED, @@ -182,7 +185,7 @@ enum nvdimm_passphrase_type { }; struct nvdimm_security_ops { - enum nvdimm_security_state (*state)(struct nvdimm *nvdimm, + unsigned long (*get_flags)(struct nvdimm *nvdimm, enum nvdimm_passphrase_type pass_type); int (*freeze)(struct nvdimm *nvdimm); int (*change_key)(struct nvdimm *nvdimm, diff --git a/tools/testing/nvdimm/dimm_devs.c b/tools/testing/nvdimm/dimm_devs.c index 2d4baf57822f..57bd27dedf1f 100644 --- a/tools/testing/nvdimm/dimm_devs.c +++ b/tools/testing/nvdimm/dimm_devs.c @@ -18,24 +18,13 @@ ssize_t security_show(struct device *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); + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); - switch (nvdimm->sec.state) { - case NVDIMM_SECURITY_DISABLED: + if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) return sprintf(buf, "disabled\n"); - case NVDIMM_SECURITY_UNLOCKED: + if (test_bit(NVDIMM_SECURITY_UNLOCKED, &nvdimm->sec.flags)) return sprintf(buf, "unlocked\n"); - case NVDIMM_SECURITY_LOCKED: + if (test_bit(NVDIMM_SECURITY_LOCKED, &nvdimm->sec.flags)) 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; } - |