181 			  const u8 *raw_key, const struct fscrypt_info *ci)  in find_or_insert_direct_key()  argument
193 	memcpy(&hash_key, ci->ci_policy.v1.master_key_descriptor,  in find_or_insert_direct_key()
198 		if (memcmp(ci->ci_policy.v1.master_key_descriptor,  in find_or_insert_direct_key()
201 		if (ci->ci_mode != dk->dk_mode)  in find_or_insert_direct_key()
203 		if (!fscrypt_is_key_prepared(&dk->dk_key, ci))  in find_or_insert_direct_key()
205 		if (crypto_memneq(raw_key, dk->dk_raw, ci->ci_mode->keysize))  in find_or_insert_direct_key()
221 fscrypt_get_direct_key(const struct fscrypt_info *ci, const u8 *raw_key)  in fscrypt_get_direct_key()  argument
227 	dk = find_or_insert_direct_key(NULL, raw_key, ci);  in fscrypt_get_direct_key()
235 	dk->dk_sb = ci->ci_inode->i_sb;  in fscrypt_get_direct_key()
237 	dk->dk_mode = ci->ci_mode;  in fscrypt_get_direct_key()
238 	err = fscrypt_prepare_key(&dk->dk_key, raw_key, ci);  in fscrypt_get_direct_key()
241 	memcpy(dk->dk_descriptor, ci->ci_policy.v1.master_key_descriptor,  in fscrypt_get_direct_key()
243 	memcpy(dk->dk_raw, raw_key, ci->ci_mode->keysize);  in fscrypt_get_direct_key()
245 	return find_or_insert_direct_key(dk, raw_key, ci);  in fscrypt_get_direct_key()
253 static int setup_v1_file_key_direct(struct fscrypt_info *ci,  in setup_v1_file_key_direct()  argument
258 	dk = fscrypt_get_direct_key(ci, raw_master_key);  in setup_v1_file_key_direct()
261 	ci->ci_direct_key = dk;  in setup_v1_file_key_direct()
262 	ci->ci_enc_key = dk->dk_key;  in setup_v1_file_key_direct()
267 static int setup_v1_file_key_derived(struct fscrypt_info *ci,  in setup_v1_file_key_derived()  argument
277 	derived_key = kmalloc(ci->ci_mode->keysize, GFP_KERNEL);  in setup_v1_file_key_derived()
281 	err = derive_key_aes(raw_master_key, ci->ci_nonce,  in setup_v1_file_key_derived()
282 			     derived_key, ci->ci_mode->keysize);  in setup_v1_file_key_derived()
286 	err = fscrypt_set_per_file_enc_key(ci, derived_key);  in setup_v1_file_key_derived()
292 int fscrypt_setup_v1_file_key(struct fscrypt_info *ci, const u8 *raw_master_key)  in fscrypt_setup_v1_file_key()  argument
294 	if (ci->ci_policy.v1.flags & FSCRYPT_POLICY_FLAG_DIRECT_KEY)  in fscrypt_setup_v1_file_key()
295 		return setup_v1_file_key_direct(ci, raw_master_key);  in fscrypt_setup_v1_file_key()
297 		return setup_v1_file_key_derived(ci, raw_master_key);  in fscrypt_setup_v1_file_key()
300 int fscrypt_setup_v1_file_key_via_subscribed_keyrings(struct fscrypt_info *ci)  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()  argument
307 					ci->ci_policy.v1.master_key_descriptor,  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
308 					ci->ci_mode->keysize, &payload);  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
309 	if (key == ERR_PTR(-ENOKEY) && ci->ci_inode->i_sb->s_cop->key_prefix) {  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
310 		key = find_and_lock_process_key(ci->ci_inode->i_sb->s_cop->key_prefix,  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
311 						ci->ci_policy.v1.master_key_descriptor,  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
312 						ci->ci_mode->keysize, &payload);  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()
317 	err = fscrypt_setup_v1_file_key(ci, payload->raw);  in fscrypt_setup_v1_file_key_via_subscribed_keyrings()