ceph/src/boost/libs/dll/include/boost/dll/detail/posix/program_location_impl.hpp

   1 // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
   2 // Copyright 2015 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/config.hpp>
  12 #include <boost/dll/detail/system_error.hpp>
  13 #include <boost/filesystem/path.hpp>
  14 #include <boost/predef/os.h>
  15
  16 #ifdef BOOST_HAS_PRAGMA_ONCE
  17 # pragma once
  18 #endif
  19
  20 #if BOOST_OS_MACOS || BOOST_OS_IOS
  21
  22 #include <mach-o/dyld.h>
  23
  24 namespace boost { namespace dll { namespace detail {
  25     inline boost::filesystem::path program_location_impl(boost::system::error_code &ec) {
  26         ec.clear();
  27
  28         char path[1024];
  29         uint32_t size = sizeof(path);
  30         if (_NSGetExecutablePath(path, &size) == 0)
  31             return boost::filesystem::path(path);
  32
  33         char *p = new char[size];
  34         if (_NSGetExecutablePath(p, &size) != 0) {
  35             ec = boost::system::error_code(
  36                 boost::system::errc::bad_file_descriptor,
  37                 boost::system::generic_category()
  38             );
  39         }
  40
  41         boost::filesystem::path ret(p);
  42         delete[] p;
  43         return ret;
  44     }
  45 }}} // namespace boost::dll::detail
  46
  47 #elif BOOST_OS_SOLARIS
  48
  49 #include <stdlib.h>
  50 namespace boost { namespace dll { namespace detail {
  51     inline boost::filesystem::path program_location_impl(boost::system::error_code& ec) {
  52         ec.clear();
  53
  54         return boost::filesystem::path(getexecname());
  55     }
  56 }}} // namespace boost::dll::detail
  57
  58 #elif BOOST_OS_BSD_FREE
  59
  60 #include <sys/types.h>
  61 #include <sys/sysctl.h>
  62 #include <stdlib.h>
  63
  64 namespace boost { namespace dll { namespace detail {
  65     inline boost::filesystem::path program_location_impl(boost::system::error_code& ec) {
  66         ec.clear();
  67
  68         int mib[4];
  69         mib[0] = CTL_KERN;
  70         mib[1] = KERN_PROC;
  71         mib[2] = KERN_PROC_PATHNAME;
  72         mib[3] = -1;
  73         char buf[10240];
  74         size_t cb = sizeof(buf);
  75         sysctl(mib, 4, buf, &cb, NULL, 0);
  76
  77         return boost::filesystem::path(buf);
  78     }
  79 }}} // namespace boost::dll::detail
  80
  81
  82
  83 #elif BOOST_OS_BSD_NET
  84
  85 #include <boost/filesystem/operations.hpp>
  86 namespace boost { namespace dll { namespace detail {
  87     inline boost::filesystem::path program_location_impl(boost::system::error_code &ec) {
  88         return boost::filesystem::read_symlink("/proc/curproc/exe", ec);
  89     }
  90 }}} // namespace boost::dll::detail
  91
  92 #elif BOOST_OS_BSD_DRAGONFLY
  93
  94 #include <boost/filesystem/operations.hpp>
  95 namespace boost { namespace dll { namespace detail {
  96     inline boost::filesystem::path program_location_impl(boost::system::error_code &ec) {
  97         return boost::filesystem::read_symlink("/proc/curproc/file", ec);
  98     }
  99 }}} // namespace boost::dll::detail
 100
 101 #elif BOOST_OS_QNX
 102
 103 #include <fstream>
 104 #include <string> // for std::getline
 105 namespace boost { namespace dll { namespace detail {
 106     inline boost::filesystem::path program_location_impl(boost::system::error_code &ec) {
 107         ec.clear();
 108
 109         std::string s;
 110         std::ifstream ifs("/proc/self/exefile");
 111         std::getline(ifs, s);
 112
 113         if (ifs.fail() || s.empty()) {
 114             ec = boost::system::error_code(
 115                 boost::system::errc::bad_file_descriptor,
 116                 boost::system::generic_category()
 117             );
 118         }
 119
 120         return boost::filesystem::path(s);
 121     }
 122 }}} // namespace boost::dll::detail
 123
 124 #else  // BOOST_OS_LINUX || BOOST_OS_UNIX || BOOST_OS_HPUX || BOOST_OS_ANDROID
 125
 126 #include <boost/filesystem/operations.hpp>
 127 namespace boost { namespace dll { namespace detail {
 128     inline boost::filesystem::path program_location_impl(boost::system::error_code &ec) {
 129         // We can not use
 130         // boost::dll::detail::path_from_handle(dlopen(NULL, RTLD_LAZY | RTLD_LOCAL), ignore);
 131         // because such code returns empty path.
 132
 133         return boost::filesystem::read_symlink("/proc/self/exe", ec);   // Linux specific
 134     }
 135 }}} // namespace boost::dll::detail
 136
 137 #endif
 138
 139 #endif // BOOST_DLL_DETAIL_POSIX_PROGRAM_LOCATION_IMPL_HPP
 140