47 		const struct fscrypt_policy_v1 *policy = &policy_u->v1;  in fscrypt_supported_policy()  local
49 		if (!fscrypt_valid_enc_modes(policy->contents_encryption_mode,  in fscrypt_supported_policy()
50 					     policy->filenames_encryption_mode)) {  in fscrypt_supported_policy()
53 				     policy->contents_encryption_mode,  in fscrypt_supported_policy()
54 				     policy->filenames_encryption_mode);  in fscrypt_supported_policy()
58 		if (policy->flags & ~FSCRYPT_POLICY_FLAGS_VALID) {  in fscrypt_supported_policy()
61 				     policy->flags);  in fscrypt_supported_policy()
68 		const struct fscrypt_policy_v2 *policy = &policy_u->v2;  in fscrypt_supported_policy()  local
70 		if (!fscrypt_valid_enc_modes(policy->contents_encryption_mode,  in fscrypt_supported_policy()
71 					     policy->filenames_encryption_mode)) {  in fscrypt_supported_policy()
74 				     policy->contents_encryption_mode,  in fscrypt_supported_policy()
75 				     policy->filenames_encryption_mode);  in fscrypt_supported_policy()
79 		if (policy->flags & ~FSCRYPT_POLICY_FLAGS_VALID) {  in fscrypt_supported_policy()
82 				     policy->flags);  in fscrypt_supported_policy()
86 		if (memchr_inv(policy->__reserved, 0,  in fscrypt_supported_policy()
87 			       sizeof(policy->__reserved))) {  in fscrypt_supported_policy()
114 		const struct fscrypt_policy_v1 *policy = &policy_u->v1;  in fscrypt_new_context_from_policy()  local
119 			policy->contents_encryption_mode;  in fscrypt_new_context_from_policy()
121 			policy->filenames_encryption_mode;  in fscrypt_new_context_from_policy()
122 		ctx->flags = policy->flags;  in fscrypt_new_context_from_policy()
124 		       policy->master_key_descriptor,  in fscrypt_new_context_from_policy()
130 		const struct fscrypt_policy_v2 *policy = &policy_u->v2;  in fscrypt_new_context_from_policy()  local
135 			policy->contents_encryption_mode;  in fscrypt_new_context_from_policy()
137 			policy->filenames_encryption_mode;  in fscrypt_new_context_from_policy()
138 		ctx->flags = policy->flags;  in fscrypt_new_context_from_policy()
140 		       policy->master_key_identifier,  in fscrypt_new_context_from_policy()
172 		struct fscrypt_policy_v1 *policy = &policy_u->v1;  in fscrypt_policy_from_context()  local
174 		policy->version = FSCRYPT_POLICY_V1;  in fscrypt_policy_from_context()
175 		policy->contents_encryption_mode =  in fscrypt_policy_from_context()
177 		policy->filenames_encryption_mode =  in fscrypt_policy_from_context()
179 		policy->flags = ctx->flags;  in fscrypt_policy_from_context()
180 		memcpy(policy->master_key_descriptor,  in fscrypt_policy_from_context()
182 		       sizeof(policy->master_key_descriptor));  in fscrypt_policy_from_context()
187 		struct fscrypt_policy_v2 *policy = &policy_u->v2;  in fscrypt_policy_from_context()  local
189 		policy->version = FSCRYPT_POLICY_V2;  in fscrypt_policy_from_context()
190 		policy->contents_encryption_mode =  in fscrypt_policy_from_context()
192 		policy->filenames_encryption_mode =  in fscrypt_policy_from_context()
194 		policy->flags = ctx->flags;  in fscrypt_policy_from_context()
195 		memcpy(policy->__reserved, ctx->__reserved,  in fscrypt_policy_from_context()
196 		       sizeof(policy->__reserved));  in fscrypt_policy_from_context()
197 		memcpy(policy->master_key_identifier,  in fscrypt_policy_from_context()
199 		       sizeof(policy->master_key_identifier));  in fscrypt_policy_from_context()
208 static int fscrypt_get_policy(struct inode *inode, union fscrypt_policy *policy)  in fscrypt_get_policy()  argument
217 		*policy = ci->ci_policy;  in fscrypt_get_policy()
228 	return fscrypt_policy_from_context(policy, &ctx, ret);  in fscrypt_get_policy()
232 				 const union fscrypt_policy *policy)  in set_encryption_policy()  argument
238 	if (!fscrypt_supported_policy(policy, inode))  in set_encryption_policy()
241 	switch (policy->version) {  in set_encryption_policy()
259 					       policy->v2.master_key_identifier);  in set_encryption_policy()
268 	ctxsize = fscrypt_new_context_from_policy(&ctx, policy);  in set_encryption_policy()
275 	union fscrypt_policy policy;  in fscrypt_ioctl_set_policy()  local
282 	if (get_user(policy.version, (const u8 __user *)arg))  in fscrypt_ioctl_set_policy()
285 	size = fscrypt_policy_size(&policy);  in fscrypt_ioctl_set_policy()
300 	version = policy.version;  in fscrypt_ioctl_set_policy()
301 	if (copy_from_user(&policy, arg, size))  in fscrypt_ioctl_set_policy()
303 	policy.version = version;  in fscrypt_ioctl_set_policy()
323 			ret = set_encryption_policy(inode, &policy);  in fscrypt_ioctl_set_policy()
325 		   (ret == 0 && !fscrypt_policies_equal(&policy,  in fscrypt_ioctl_set_policy()
341 	union fscrypt_policy policy;  in fscrypt_ioctl_get_policy()  local
344 	err = fscrypt_get_policy(file_inode(filp), &policy);  in fscrypt_ioctl_get_policy()
348 	if (policy.version != FSCRYPT_POLICY_V1)  in fscrypt_ioctl_get_policy()
351 	if (copy_to_user(arg, &policy, sizeof(policy.v1)))  in fscrypt_ioctl_get_policy()
361 	union fscrypt_policy *policy = (union fscrypt_policy *)&arg.policy;  in fscrypt_ioctl_get_policy_ex()  local
368 		     offsetof(typeof(arg), policy));  in fscrypt_ioctl_get_policy_ex()
369 	BUILD_BUG_ON(sizeof(arg.policy) != sizeof(*policy));  in fscrypt_ioctl_get_policy_ex()
371 	err = fscrypt_get_policy(file_inode(filp), policy);  in fscrypt_ioctl_get_policy_ex()
374 	policy_size = fscrypt_policy_size(policy);  in fscrypt_ioctl_get_policy_ex()