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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2005-2011. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/interprocess for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTERPROCESS_PERMISSIONS_HPP
#define BOOST_INTERPROCESS_PERMISSIONS_HPP
/// @cond
#if defined (_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/interprocess/detail/config_begin.hpp>
#include <boost/interprocess/detail/workaround.hpp>
#include <boost/interprocess/interprocess_fwd.hpp>
#if defined(BOOST_INTERPROCESS_WINDOWS)
#include <boost/interprocess/detail/win32_api.hpp>
#endif
/// @endcond
//!\file
//!Describes permissions class
namespace boost {
namespace interprocess {
/// @cond
#if defined(BOOST_INTERPROCESS_WINDOWS)
namespace ipcdetail {
template <int Dummy>
struct unrestricted_permissions_holder
{
static winapi::interprocess_all_access_security unrestricted;
};
template<int Dummy>
winapi::interprocess_all_access_security unrestricted_permissions_holder<Dummy>::unrestricted;
} //namespace ipcdetail {
#endif //defined BOOST_INTERPROCESS_WINDOWS
/// @endcond
//!The permissions class represents permissions to be set to shared memory or
//!files, that can be constructed form usual permission representations:
//!a SECURITY_ATTRIBUTES pointer in windows or ORed rwx chmod integer in UNIX.
class permissions
{
/// @cond
#if defined(BOOST_INTERPROCESS_WINDOWS)
typedef void* os_permissions_type;
#else
typedef int os_permissions_type;
#endif
os_permissions_type m_perm;
/// @endcond
public:
//!Constructs a permissions object from a user provided os-dependent
//!permissions.
permissions(os_permissions_type type)
: m_perm(type)
{}
//!Constructs a default permissions object:
//!A null security attributes pointer for windows or 0644
//!for UNIX.
permissions()
{ set_default(); }
//!Sets permissions to default values:
//!A null security attributes pointer for windows or 0644
//!for UNIX.
void set_default()
{
/// @cond
#if defined (BOOST_INTERPROCESS_WINDOWS)
m_perm = 0;
#else
m_perm = 0644;
#endif
/// @endcond
}
//!Sets permissions to unrestricted access:
//!A null DACL for windows or 0666 for UNIX.
void set_unrestricted()
{
/// @cond
#if defined (BOOST_INTERPROCESS_WINDOWS)
m_perm = &ipcdetail::unrestricted_permissions_holder<0>::unrestricted;
#else
m_perm = 0666;
#endif
/// @endcond
}
//!Sets permissions from a user provided os-dependent
//!permissions.
void set_permissions(os_permissions_type perm)
{ m_perm = perm; }
//!Returns stored os-dependent
//!permissions
os_permissions_type get_permissions() const
{ return m_perm; }
};
} //namespace interprocess {
} //namespace boost {
#include <boost/interprocess/detail/config_end.hpp>
#endif //BOOST_INTERPROCESS_PERMISSIONS_HPP
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