// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
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// Copyright 2015-2019 Antony Polukhin.
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP
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#define BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP
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#include <boost/dll/config.hpp>
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#include <boost/dll/detail/system_error.hpp>
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#include <boost/predef/os.h>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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# pragma once
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#endif
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#if BOOST_OS_MACOS || BOOST_OS_IOS
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#include <mach-o/dyld.h>
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) {
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ec.clear();
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char path[1024];
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uint32_t size = sizeof(path);
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if (_NSGetExecutablePath(path, &size) == 0)
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return boost::dll::fs::path(path);
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char *p = new char[size];
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if (_NSGetExecutablePath(p, &size) != 0) {
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ec = boost::dll::fs::make_error_code(
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boost::dll::fs::errc::bad_file_descriptor
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);
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}
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boost::dll::fs::path ret(p);
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delete[] p;
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return ret;
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}
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}}} // namespace boost::dll::detail
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#elif BOOST_OS_SOLARIS
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#include <stdlib.h>
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code& ec) {
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ec.clear();
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return boost::dll::fs::path(getexecname());
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}
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}}} // namespace boost::dll::detail
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#elif BOOST_OS_BSD_FREE
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <stdlib.h>
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code& ec) {
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ec.clear();
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int mib[4];
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_PATHNAME;
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mib[3] = -1;
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char buf[10240];
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size_t cb = sizeof(buf);
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sysctl(mib, 4, buf, &cb, NULL, 0);
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return boost::dll::fs::path(buf);
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}
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}}} // namespace boost::dll::detail
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#elif BOOST_OS_BSD_NET
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) {
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return boost::dll::fs::read_symlink("/proc/curproc/exe", ec);
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}
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}}} // namespace boost::dll::detail
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#elif BOOST_OS_BSD_DRAGONFLY
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) {
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return boost::dll::fs::read_symlink("/proc/curproc/file", ec);
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}
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}}} // namespace boost::dll::detail
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#elif BOOST_OS_QNX
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#include <fstream>
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#include <string> // for std::getline
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) {
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ec.clear();
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std::string s;
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std::ifstream ifs("/proc/self/exefile");
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std::getline(ifs, s);
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if (ifs.fail() || s.empty()) {
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ec = boost::dll::fs::make_error_code(
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boost::dll::fs::errc::bad_file_descriptor
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);
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}
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return boost::dll::fs::path(s);
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}
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}}} // namespace boost::dll::detail
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#else // BOOST_OS_LINUX || BOOST_OS_UNIX || BOOST_OS_HPUX || BOOST_OS_ANDROID
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namespace boost { namespace dll { namespace detail {
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inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) {
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// We can not use
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// boost::dll::detail::path_from_handle(dlopen(NULL, RTLD_LAZY | RTLD_LOCAL), ignore);
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// because such code returns empty path.
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return boost::dll::fs::read_symlink("/proc/self/exe", ec); // Linux specific
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}
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}}} // namespace boost::dll::detail
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#endif
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#endif // BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP
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