uv-compat.h revision 1.4 
1/*	$NetBSD: uv-compat.h,v 1.4 2021/08/19 11:50:18 christos Exp $	*/
2
3/*
4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
5 *
6 * This Source Code Form is subject to the terms of the Mozilla Public
7 * License, v. 2.0. If a copy of the MPL was not distributed with this
8 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
9 *
10 * See the COPYRIGHT file distributed with this work for additional
11 * information regarding copyright ownership.
12 */
13
14#pragma once
15#include <uv.h>
16
17/*
18 * These functions were introduced in newer libuv, but we still
19 * want BIND9 compile on older ones so we emulate them.
20 * They're inline to avoid conflicts when running with a newer
21 * library version.
22 */
23
24#define UV_VERSION(major, minor, patch) ((major << 16) | (minor << 8) | (patch))
25
26#if UV_VERSION_HEX < UV_VERSION(1, 19, 0)
27static inline void *
28uv_handle_get_data(const uv_handle_t *handle) {
29	return (handle->data);
30}
31
32static inline void
33uv_handle_set_data(uv_handle_t *handle, void *data) {
34	handle->data = data;
35}
36
37static inline void *
38uv_req_get_data(const uv_req_t *req) {
39	return (req->data);
40}
41
42static inline void
43uv_req_set_data(uv_req_t *req, void *data) {
44	req->data = data;
45}
46#endif /* UV_VERSION_HEX < UV_VERSION(1, 19, 0) */
47
48#if UV_VERSION_HEX < UV_VERSION(1, 34, 0)
49#define uv_sleep(msec) usleep(msec * 1000)
50#endif /* UV_VERSION_HEX < UV_VERSION(1, 34, 0) */
51
52#if UV_VERSION_HEX < UV_VERSION(1, 27, 0)
53int
54isc_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr);
55/*%<
56 * Associate the UDP handle to a remote address and port, so every message sent
57 * by this handle is automatically sent to that destination.
58 *
59 * NOTE: This is just a limited shim for uv_udp_connect() as it requires the
60 * handle to be bound.
61 */
62#else /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */
63#define isc_uv_udp_connect uv_udp_connect
64#endif /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */
65
66#if UV_VERSION_HEX < UV_VERSION(1, 12, 0)
67#include <stdlib.h>
68#include <string.h>
69
70static inline int
71uv_os_getenv(const char *name, char *buffer, size_t *size) {
72	size_t len;
73	char *buf = getenv(name);
74
75	if (buf == NULL) {
76		return (UV_ENOENT);
77	}
78
79	len = strlen(buf) + 1;
80	if (len > *size) {
81		*size = len;
82		return (UV_ENOBUFS);
83	}
84
85	*size = len;
86	memmove(buffer, buf, len);
87
88	return (0);
89}
90
91#define uv_os_setenv(name, value) setenv(name, value, 0)
92#endif /* UV_VERSION_HEX < UV_VERSION(1, 12, 0) */
93
94int
95isc_uv_udp_freebind(uv_udp_t *handle, const struct sockaddr *addr,
96		    unsigned int flags);
97
98int
99isc_uv_tcp_freebind(uv_tcp_t *handle, const struct sockaddr *addr,
100		    unsigned int flags);
101