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path: root/drivers/nvdimm/security.c
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Diffstat (limited to 'drivers/nvdimm/security.c')
-rw-r--r--drivers/nvdimm/security.c99
1 files changed, 47 insertions, 52 deletions
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)
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-26 10:04:08 +0000