1 // Copyright 2014 Renato Tegon Forti, Antony Polukhin. 2 // Copyright 2015-2019 Antony Polukhin. 3 // 4 // Distributed under the Boost Software License, Version 1.0. 5 // (See accompanying file LICENSE_1_0.txt 6 // or copy at http://www.boost.org/LICENSE_1_0.txt) 7 8 #ifndef BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP 9 #define BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP 10 11 #include <boost/dll/config.hpp> 12 #include <boost/dll/detail/system_error.hpp> 13 #include <boost/predef/os.h> 14 15 #ifdef BOOST_HAS_PRAGMA_ONCE 16 # pragma once 17 #endif 18 19 #if BOOST_OS_MACOS || BOOST_OS_IOS 20 21 #include <mach-o/dyld.h> 22 23 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)24 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) { 25 ec.clear(); 26 27 char path[1024]; 28 uint32_t size = sizeof(path); 29 if (_NSGetExecutablePath(path, &size) == 0) 30 return boost::dll::fs::path(path); 31 32 char *p = new char[size]; 33 if (_NSGetExecutablePath(p, &size) != 0) { 34 ec = boost::dll::fs::make_error_code( 35 boost::dll::fs::errc::bad_file_descriptor 36 ); 37 } 38 39 boost::dll::fs::path ret(p); 40 delete[] p; 41 return ret; 42 } 43 }}} // namespace boost::dll::detail 44 45 #elif BOOST_OS_SOLARIS 46 47 #include <stdlib.h> 48 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)49 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code& ec) { 50 ec.clear(); 51 52 return boost::dll::fs::path(getexecname()); 53 } 54 }}} // namespace boost::dll::detail 55 56 #elif BOOST_OS_BSD_FREE 57 58 #include <sys/types.h> 59 #include <sys/sysctl.h> 60 #include <stdlib.h> 61 62 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)63 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code& ec) { 64 ec.clear(); 65 66 int mib[4]; 67 mib[0] = CTL_KERN; 68 mib[1] = KERN_PROC; 69 mib[2] = KERN_PROC_PATHNAME; 70 mib[3] = -1; 71 char buf[10240]; 72 size_t cb = sizeof(buf); 73 sysctl(mib, 4, buf, &cb, NULL, 0); 74 75 return boost::dll::fs::path(buf); 76 } 77 }}} // namespace boost::dll::detail 78 79 80 81 #elif BOOST_OS_BSD_NET 82 83 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)84 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) { 85 return boost::dll::fs::read_symlink("/proc/curproc/exe", ec); 86 } 87 }}} // namespace boost::dll::detail 88 89 #elif BOOST_OS_BSD_DRAGONFLY 90 91 92 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)93 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) { 94 return boost::dll::fs::read_symlink("/proc/curproc/file", ec); 95 } 96 }}} // namespace boost::dll::detail 97 98 #elif BOOST_OS_QNX 99 100 #include <fstream> 101 #include <string> // for std::getline 102 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)103 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) { 104 ec.clear(); 105 106 std::string s; 107 std::ifstream ifs("/proc/self/exefile"); 108 std::getline(ifs, s); 109 110 if (ifs.fail() || s.empty()) { 111 ec = boost::dll::fs::make_error_code( 112 boost::dll::fs::errc::bad_file_descriptor 113 ); 114 } 115 116 return boost::dll::fs::path(s); 117 } 118 }}} // namespace boost::dll::detail 119 120 #else // BOOST_OS_LINUX || BOOST_OS_UNIX || BOOST_OS_HPUX || BOOST_OS_ANDROID 121 122 namespace boost { namespace dll { namespace detail { program_location_impl(boost::dll::fs::error_code & ec)123 inline boost::dll::fs::path program_location_impl(boost::dll::fs::error_code &ec) { 124 // We can not use 125 // boost::dll::detail::path_from_handle(dlopen(NULL, RTLD_LAZY | RTLD_LOCAL), ignore); 126 // because such code returns empty path. 127 128 return boost::dll::fs::read_symlink("/proc/self/exe", ec); // Linux specific 129 } 130 }}} // namespace boost::dll::detail 131 132 #endif 133 134 #endif // BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP 135 136