Messages in this thread | | | Subject | Re: [PATCH 3/6] libnvdimm/security: Drop direct dependency on key_type_encrypted | From | Dave Jiang <> | Date | Tue, 19 Mar 2019 09:46:23 -0700 |
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On 3/18/19 11:06 PM, Dan Williams wrote: > Lookup the key type by name and protect libnvdimm from encrypted_keys.ko > module load failures. > > Cc: Vishal Verma <vishal.l.verma@intel.com> > Cc: Dave Jiang <dave.jiang@intel.com> > Cc: Keith Busch <keith.busch@intel.com> > Cc: Ira Weiny <ira.weiny@intel.com> > Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> --- > drivers/nvdimm/security.c | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) > > diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c > index f8bb746a549f..7f9e412f743a 100644 > --- a/drivers/nvdimm/security.c > +++ b/drivers/nvdimm/security.c > @@ -48,12 +48,17 @@ static void nvdimm_put_key(struct key *key) > static struct key *nvdimm_request_key(struct nvdimm *nvdimm) > { > struct key *key = NULL; > + struct key_type *type; > static const char NVDIMM_PREFIX[] = "nvdimm:"; > char desc[NVDIMM_KEY_DESC_LEN + sizeof(NVDIMM_PREFIX)]; > struct device *dev = &nvdimm->dev; > > sprintf(desc, "%s%s", NVDIMM_PREFIX, nvdimm->dimm_id); > - key = request_key(&key_type_encrypted, desc, ""); > + type = key_type_lookup("encrypted"); > + if (IS_ERR(type)) > + return (struct key *) type; > + > + key = request_key(type, desc, ""); > if (IS_ERR(key)) { > if (PTR_ERR(key) == -ENOKEY) > dev_dbg(dev, "request_key() found no key\n"); > @@ -88,7 +93,7 @@ static struct key *nvdimm_lookup_user_key(struct nvdimm *nvdimm, > return NULL; > > key = key_ref_to_ptr(keyref); > - if (key->type != &key_type_encrypted) { > + if (strcmp(key->type->name, "encrypted") != 0) { > key_put(key); > return NULL; > } > @@ -452,3 +457,5 @@ void nvdimm_security_overwrite_query(struct work_struct *work) > __nvdimm_security_overwrite_query(nvdimm); > nvdimm_bus_unlock(&nvdimm->dev); > } > + > +MODULE_SOFTDEP("pre: encrypted_keys"); >
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