From 3b9b6d0b8e7f798023c9d109c490449d528fde80 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:59:48 +0200 Subject: Adding upstream version 1:9.18.19. Signed-off-by: Daniel Baumann --- lib/isc/netmgr/uv-compat.c | 140 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 lib/isc/netmgr/uv-compat.c (limited to 'lib/isc/netmgr/uv-compat.c') diff --git a/lib/isc/netmgr/uv-compat.c b/lib/isc/netmgr/uv-compat.c new file mode 100644 index 0000000..b7c0f7b --- /dev/null +++ b/lib/isc/netmgr/uv-compat.c @@ -0,0 +1,140 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +#include "uv-compat.h" +#include + +#include + +#include "netmgr-int.h" + +#if UV_VERSION_HEX < UV_VERSION(1, 27, 0) +int +isc_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr) { + int err = 0; + + do { + int addrlen = (addr->sa_family == AF_INET) + ? sizeof(struct sockaddr_in) + : sizeof(struct sockaddr_in6); + err = connect(handle->io_watcher.fd, addr, addrlen); + } while (err == -1 && errno == EINTR); + + if (err) { +#if UV_VERSION_HEX >= UV_VERSION(1, 10, 0) + return (uv_translate_sys_error(errno)); +#else + return (-errno); +#endif /* UV_VERSION_HEX >= UV_VERSION(1, 10, 0) */ + } + + return (0); +} +#endif /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */ + +#if UV_VERSION_HEX < UV_VERSION(1, 32, 0) +int +uv_tcp_close_reset(uv_tcp_t *handle, uv_close_cb close_cb) { + if (setsockopt(handle->io_watcher.fd, SOL_SOCKET, SO_LINGER, + &(struct linger){ 1, 0 }, sizeof(struct linger)) == -1) + { +#if UV_VERSION_HEX >= UV_VERSION(1, 10, 0) + return (uv_translate_sys_error(errno)); +#else + return (-errno); +#endif /* UV_VERSION_HEX >= UV_VERSION(1, 10, 0) */ + } + + uv_close((uv_handle_t *)handle, close_cb); + return (0); +} +#endif /* UV_VERSION_HEX < UV_VERSION(1, 32, 0) */ + +int +isc_uv_udp_freebind(uv_udp_t *handle, const struct sockaddr *addr, + unsigned int flags) { + int r; + uv_os_sock_t fd; + + r = uv_fileno((const uv_handle_t *)handle, (uv_os_fd_t *)&fd); + if (r < 0) { + return (r); + } + + r = uv_udp_bind(handle, addr, flags); + if (r == UV_EADDRNOTAVAIL && + isc__nm_socket_freebind(fd, addr->sa_family) == ISC_R_SUCCESS) + { + /* + * Retry binding with IP_FREEBIND (or equivalent option) if the + * address is not available. This helps with IPv6 tentative + * addresses which are reported by the route socket, although + * named is not yet able to properly bind to them. + */ + r = uv_udp_bind(handle, addr, flags); + } + + return (r); +} + +static int +isc__uv_tcp_bind_now(uv_tcp_t *handle, const struct sockaddr *addr, + unsigned int flags) { + int r; + struct sockaddr_storage sname; + int snamelen = sizeof(sname); + + r = uv_tcp_bind(handle, addr, flags); + if (r < 0) { + return (r); + } + + /* + * uv_tcp_bind() uses a delayed error, initially returning + * success even if bind() fails. By calling uv_tcp_getsockname() + * here we can find out whether the bind() call was successful. + */ + r = uv_tcp_getsockname(handle, (struct sockaddr *)&sname, &snamelen); + if (r < 0) { + return (r); + } + + return (0); +} + +int +isc_uv_tcp_freebind(uv_tcp_t *handle, const struct sockaddr *addr, + unsigned int flags) { + int r; + uv_os_sock_t fd; + + r = uv_fileno((const uv_handle_t *)handle, (uv_os_fd_t *)&fd); + if (r < 0) { + return (r); + } + + r = isc__uv_tcp_bind_now(handle, addr, flags); + if (r == UV_EADDRNOTAVAIL && + isc__nm_socket_freebind(fd, addr->sa_family) == ISC_R_SUCCESS) + { + /* + * Retry binding with IP_FREEBIND (or equivalent option) if the + * address is not available. This helps with IPv6 tentative + * addresses which are reported by the route socket, although + * named is not yet able to properly bind to them. + */ + r = isc__uv_tcp_bind_now(handle, addr, flags); + } + + return (r); +} -- cgit v1.2.3