86 int fscrypt_fname_encrypt(const struct inode *inode, const struct qstr *iname,  in fscrypt_fname_encrypt()  argument
101 	if (WARN_ON(olen < iname->len))  in fscrypt_fname_encrypt()
103 	memcpy(out, iname->name, iname->len);  in fscrypt_fname_encrypt()
104 	memset(out + iname->len, 0, olen - iname->len);  in fscrypt_fname_encrypt()
141 			 const struct fscrypt_str *iname,  in fname_decrypt()  argument
164 	sg_init_one(&src_sg, iname->name, iname->len);  in fname_decrypt()
166 	skcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, &iv);  in fname_decrypt()
174 	oname->len = strnlen(oname->name, iname->len);  in fname_decrypt()
317 			      const struct fscrypt_str *iname,  in fscrypt_fname_disk_to_usr()  argument
320 	const struct qstr qname = FSTR_TO_QSTR(iname);  in fscrypt_fname_disk_to_usr()
326 		oname->name[iname->len - 1] = '.';  in fscrypt_fname_disk_to_usr()
327 		oname->len = iname->len;  in fscrypt_fname_disk_to_usr()
331 	if (iname->len < FS_CRYPTO_BLOCK_SIZE)  in fscrypt_fname_disk_to_usr()
335 		return fname_decrypt(inode, iname, oname);  in fscrypt_fname_disk_to_usr()
350 	if (iname->len <= sizeof(nokey_name.bytes)) {  in fscrypt_fname_disk_to_usr()
351 		memcpy(nokey_name.bytes, iname->name, iname->len);  in fscrypt_fname_disk_to_usr()
352 		size = offsetof(struct fscrypt_nokey_name, bytes[iname->len]);  in fscrypt_fname_disk_to_usr()
354 		memcpy(nokey_name.bytes, iname->name, sizeof(nokey_name.bytes));  in fscrypt_fname_disk_to_usr()
356 		sha256(&iname->name[sizeof(nokey_name.bytes)],  in fscrypt_fname_disk_to_usr()
357 		       iname->len - sizeof(nokey_name.bytes),  in fscrypt_fname_disk_to_usr()
389 int fscrypt_setup_filename(struct inode *dir, const struct qstr *iname,  in fscrypt_setup_filename()  argument
396 	fname->usr_fname = iname;  in fscrypt_setup_filename()
398 	if (!IS_ENCRYPTED(dir) || fscrypt_is_dot_dotdot(iname)) {  in fscrypt_setup_filename()
399 		fname->disk_name.name = (unsigned char *)iname->name;  in fscrypt_setup_filename()
400 		fname->disk_name.len = iname->len;  in fscrypt_setup_filename()
409 						  iname->len,  in fscrypt_setup_filename()
418 		ret = fscrypt_fname_encrypt(dir, iname, fname->crypto_buf.name,  in fscrypt_setup_filename()
435 	if (iname->len > BASE64_CHARS(FSCRYPT_NOKEY_NAME_MAX))  in fscrypt_setup_filename()
442 	ret = base64_decode(iname->name, iname->len, fname->crypto_buf.name);  in fscrypt_setup_filename()