1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * This file and its contents are supplied under the terms of the Common 6 * Development and Distribution License ("CDDL"), version 1.0. You may only use 7 * this file in accordance with the terms of version 1.0 of the CDDL. 8 * 9 * A full copy of the text of the CDDL should have accompanied this source. A 10 * copy of the CDDL is also available via the Internet at 11 * http://www.illumos.org/license/CDDL. 12 * 13 * CDDL HEADER END 14 */ 15 16 /* 17 * Copyright (c) 2026 by Garth Snyder. All rights reserved. 18 */ 19 20 #ifndef _ZSTREAM_BYTESWAP_H 21 #define _ZSTREAM_BYTESWAP_H 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 #include "zstream_io.h" 28 29 #define MAX_BYTESWAP 4 /* Most swapping ops in a chain */ 30 31 /* 32 * Byteswapping is generally done both on input and on output. By default, 33 * the stream's endianness is preserved. That is, opposite-endian streams 34 * are byteswapped for processing by other modules, then ultimately 35 * de-byteswapped for output. 36 */ 37 typedef enum { BS_INCOMING, BS_OUTGOING } byteswap_stage_t; 38 39 chain_step_t 40 serial_byteswap(byteswap_stage_t stage); 41 42 /* 43 * Unconditionally swap a record. drr_type is passed in separately because 44 * we don't know whether we're doing input or output swapping. We need 45 * that value in native byte order to know how to swap the rest of the 46 * record. 47 */ 48 extern void 49 byteswap_record(dmu_replay_record_t *drr, uint32_t drr_type); 50 51 #ifdef __cplusplus 52 } 53 #endif 54 55 #endif /* _ZSTREAM_BYTESWAP_H */ 56