133 lines
3.1 KiB
C++
133 lines
3.1 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_PERMISSIONS_HPP
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#define BOOST_INTERPROCESS_PERMISSIONS_HPP
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/// @cond
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#if defined (_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/interprocess_fwd.hpp>
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#if defined(BOOST_INTERPROCESS_WINDOWS)
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#include <boost/interprocess/detail/win32_api.hpp>
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#endif
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/// @endcond
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//!\file
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//!Describes permissions class
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namespace boost {
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namespace interprocess {
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/// @cond
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#if defined(BOOST_INTERPROCESS_WINDOWS)
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namespace ipcdetail {
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template <int Dummy>
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struct unrestricted_permissions_holder
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{
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static winapi::interprocess_all_access_security unrestricted;
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};
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template<int Dummy>
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winapi::interprocess_all_access_security unrestricted_permissions_holder<Dummy>::unrestricted;
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} //namespace ipcdetail {
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#endif //defined BOOST_INTERPROCESS_WINDOWS
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/// @endcond
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//!The permissions class represents permissions to be set to shared memory or
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//!files, that can be constructed form usual permission representations:
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//!a SECURITY_ATTRIBUTES pointer in windows or ORed rwx chmod integer in UNIX.
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class permissions
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{
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/// @cond
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#if defined(BOOST_INTERPROCESS_WINDOWS)
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typedef void* os_permissions_type;
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#else
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typedef int os_permissions_type;
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#endif
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os_permissions_type m_perm;
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/// @endcond
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public:
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//!Constructs a permissions object from a user provided os-dependent
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//!permissions.
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permissions(os_permissions_type type)
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: m_perm(type)
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{}
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//!Constructs a default permissions object:
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//!A null security attributes pointer for windows or 0644
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//!for UNIX.
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permissions()
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{ set_default(); }
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//!Sets permissions to default values:
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//!A null security attributes pointer for windows or 0644
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//!for UNIX.
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void set_default()
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{
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/// @cond
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#if defined (BOOST_INTERPROCESS_WINDOWS)
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m_perm = 0;
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#else
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m_perm = 0644;
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#endif
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/// @endcond
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}
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//!Sets permissions to unrestricted access:
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//!A null DACL for windows or 0666 for UNIX.
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void set_unrestricted()
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{
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/// @cond
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#if defined (BOOST_INTERPROCESS_WINDOWS)
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m_perm = &ipcdetail::unrestricted_permissions_holder<0>::unrestricted;
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#else
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m_perm = 0666;
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#endif
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/// @endcond
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}
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//!Sets permissions from a user provided os-dependent
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//!permissions.
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void set_permissions(os_permissions_type perm)
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{ m_perm = perm; }
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//!Returns stored os-dependent
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//!permissions
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os_permissions_type get_permissions() const
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{ return m_perm; }
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};
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} //namespace interprocess {
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} //namespace boost {
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#include <boost/interprocess/detail/config_end.hpp>
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#endif //BOOST_INTERPROCESS_PERMISSIONS_HPP
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