38 int fname_encrypt(struct inode *inode, const struct qstr *iname,  in fname_encrypt()  argument
52 	if (WARN_ON(olen < iname->len))  in fname_encrypt()
54 	memcpy(out, iname->name, iname->len);  in fname_encrypt()
55 	memset(out + iname->len, 0, olen - iname->len);  in fname_encrypt()
91 				const struct fscrypt_str *iname,  in fname_decrypt()  argument
113 	sg_init_one(&src_sg, iname->name, iname->len);  in fname_decrypt()
115 	skcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);  in fname_decrypt()
125 	oname->len = strnlen(oname->name, iname->len);  in fname_decrypt()
254 			const struct fscrypt_str *iname,  in fscrypt_fname_disk_to_usr()  argument
257 	const struct qstr qname = FSTR_TO_QSTR(iname);  in fscrypt_fname_disk_to_usr()
262 		oname->name[iname->len - 1] = '.';  in fscrypt_fname_disk_to_usr()
263 		oname->len = iname->len;  in fscrypt_fname_disk_to_usr()
267 	if (iname->len < FS_CRYPTO_BLOCK_SIZE)  in fscrypt_fname_disk_to_usr()
271 		return fname_decrypt(inode, iname, oname);  in fscrypt_fname_disk_to_usr()
273 	if (iname->len <= FSCRYPT_FNAME_MAX_UNDIGESTED_SIZE) {  in fscrypt_fname_disk_to_usr()
274 		oname->len = digest_encode(iname->name, iname->len,  in fscrypt_fname_disk_to_usr()
286 	       FSCRYPT_FNAME_DIGEST(iname->name, iname->len),  in fscrypt_fname_disk_to_usr()
319 int fscrypt_setup_filename(struct inode *dir, const struct qstr *iname,  in fscrypt_setup_filename()  argument
326 	fname->usr_fname = iname;  in fscrypt_setup_filename()
328 	if (!IS_ENCRYPTED(dir) || fscrypt_is_dot_dotdot(iname)) {  in fscrypt_setup_filename()
329 		fname->disk_name.name = (unsigned char *)iname->name;  in fscrypt_setup_filename()
330 		fname->disk_name.len = iname->len;  in fscrypt_setup_filename()
338 		if (!fscrypt_fname_encrypted_size(dir, iname->len,  in fscrypt_setup_filename()
347 		ret = fname_encrypt(dir, iname, fname->crypto_buf.name,  in fscrypt_setup_filename()
362 	if (iname->name[0] == '_') {  in fscrypt_setup_filename()
363 		if (iname->len !=  in fscrypt_setup_filename()
368 		if (iname->len >  in fscrypt_setup_filename()
381 	ret = digest_decode(iname->name + digested, iname->len - digested,  in fscrypt_setup_filename()