boost::interprocess win32 global file mapping issue

[matroskin222@…]

There is a serious bug in boost::interprocess library. It is unable to create global shared memory between services and simle applications. An exception is thrown ( m_err = 5, m_str = "Access is denied" ) I shortly investigated the way to fix this issue and found that call of CreateFileMappingA winAPI in winapi::create_file_mapping function sets lpAttributes parameter as NULL. To get rid of "Access is denied" error you can reimplement this function as: static inline void * create_file_mapping (void * handle, unsigned long access, unsigned long high_size, unsigned long low_size, const char * name) {

SECURITY_ATTRIBUTES sa; SECURITY_DESCRIPTOR sd;

InitializeSecurityDescriptor(&sd,SECURITY_DESCRIPTOR_REVISION); SetSecurityDescriptorDacl(&sd, true, NULL, false);

sa.lpSecurityDescriptor = &sd; sa.nLength = sizeof(SECURITY_ATTRIBUTES); sa.bInheritHandle = FALSE; return CreateFileMappingA (handle, &sa, access, high_size, low_size, name);

}

[Ion Gaztañaga]

Changed SVN adding suggested code. Reporter: close this bug if the problem has completely disappeared.

[matroskin222@…]

Replying to igaztanaga:

Changed SVN adding suggested code. Reporter: close this bug if the problem has completely disappeared.

Problem didn't completely disappeared. You have to pass such security attributes in each WinApi call where SA parameter is required. Or allow users to specify SA by themselves.

[Ion Gaztañaga]

New permission scheme added for Boost 1.45, the user can specify permissions.