ed57b98758
This is just a subset of the recently-implemented getifaddrs(3), though if we want to handle interfaces (such as "rmnet_*") that don't have an address, we need to either expose ifaddrs_storage and keep track of which interfaces we've already seen (which is pretty messy), or refactor the netlink code so we can reuse it and just extract the information we need for if_nameindex(3). This patch goes the latter route. Also clean up if_nametoindex(3) and if_indextoname(3). Change-Id: I5ffc5df0bab62286cdda2e7af06f032c767119a8
59 lines
2 KiB
C++
59 lines
2 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef BIONIC_NETLINK_H
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#define BIONIC_NETLINK_H
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#include <sys/types.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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struct nlmsghdr;
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class NetlinkConnection {
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public:
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NetlinkConnection();
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~NetlinkConnection();
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bool SendRequest(int type);
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bool ReadResponses(void callback(void*, nlmsghdr*), void* context);
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private:
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int fd_;
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char* data_;
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size_t size_;
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};
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#if !defined(__clang__)
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// GCC gets confused by NLMSG_DATA and doesn't realize that the old-style
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// cast is from a system header and should be ignored.
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#pragma GCC diagnostic ignored "-Wold-style-cast"
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#endif
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#endif
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