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construct/include/ircd/mods/ldso.h
2019-06-04 03:18:03 -07:00

57 lines
2.1 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_MODS_LDSO_H
// This is a platform dependent interface. While this header and these decls
// are unconditionally included in the standard include stack, the defs
// behind them may not be compiled and linked on all platforms.
// Forward declarations for <link.h> because it is not included here.
extern "C"
{
struct link_map;
}
/// Platform-dependent interface on ELF+ld.so supporting compilations.
namespace ircd::mods::ldso
{
IRCD_EXCEPTION(mods::error, error)
IRCD_EXCEPTION(error, not_found);
using link_closure = std::function<bool (struct link_map &)>;
using string_closure = std::function<bool (const string_view &)>;
using semantic_version = std::array<long, 3>;
// Util
string_view fullname(const struct link_map &); // /lib/x86_64-linux-gnu/libz.so.1
string_view soname(const string_view &fullname); // libz.so.1
string_view soname(const struct link_map &); // libz.so.1
string_view name(const string_view &soname); // z
string_view name(const struct link_map &); // z
semantic_version version(const string_view &soname); // 1.0.0
semantic_version version(const struct link_map &map); // 1.0.0
// Iteration
bool for_each(const link_closure &);
bool has_fullname(const string_view &path);
bool has_soname(const string_view &name);
bool has(const string_view &name);
size_t count();
// Get link
struct link_map *get(std::nothrow_t, const string_view &name);
struct link_map &get(const string_view &name);
// Query link
string_view string(const struct link_map &, const size_t &idx);
bool for_each_needed(const struct link_map &, const string_closure &);
}