[Boost-users] Shared memory access denied

[Carla Strembicke]

Using boost shared memory.  One process creates shared memory ( as an administrator on windows).

shared_memory_object(open_or_create, pShareName, read_write);

 

Another process ( not administrator) tries to open and map to shared memory. 

shared_memory_object(open_only, pShareName, read_write); <-this fails with access denied

 

 

 

Check permissions in on file and users only have a read permission.  Once those are changes ( after created by the process running as administrator) the file can then be opened and shared by the other process.  Is this how shared memory works.  I check the code and createfile has a file_share_read|write|delete option and is set to Generic_read|write. 

 

I have not been able to find any literature on a solution, but have seen the problem on the net.

 

Thanks

Carla Strembicke
Software Developer



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[Ion Gaztañaga]

On 15/06/2010 22:26, Carla Strembicke wrote:
> Using boost shared memory. One process creates shared memory ( as an
> administrator on windows).
>
> shared_memory_object(open_or_create, pShareName, read_write);
>
> Another process ( not administrator) tries to open and map to shared
> memory.
>
> shared_memory_object(open_only, pShareName, read_write); <-this fails
> with access denied

Interprocess has this embarrasing permission limitations, but I still
don't know how to fix it. Please, fill a bug report on Boost.Trac so
that I can feel the pressure and work on it on my holidays.

Best,

Ion
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