[Boost-bugs] [Boost C++ Libraries] #1080: boost::interprocess win32 global file mapping issue

Subject: [Boost-bugs] [Boost C++ Libraries] #1080: boost::interprocess win32 global file mapping issue
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-07-05 10:23:52

#1080: boost::interprocess win32 global file mapping issue
-----------------------------------+----------------------------------------
 Reporter:  matroskin222_at_[hidden]  |        Type:  Bugs                                   
   Status:  new                    |   Milestone:  Boost 1.35.0                           
Component:  None                   |     Version:                                         
 Severity:  Problem                |    Keywords:  interprocess global shared memory win32
-----------------------------------+----------------------------------------
 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);
 }''

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Ticket URL: <http://svn.boost.org/trac/boost/ticket/1080>
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