> > any hint (where i should start, what i should learn)? > > You will want to read do_mmap_pgoff and sys_mprotect > functions and all the functions surrounding them. > > They should give you an idea to the data structures > you need to read and copy over to another process. > yeah, a have (eventually) read some source code and i am getting an idea :-) I have also found very useful to read mm.h and fork.c I was now trying to realize the difference among VM_SHARE, VM_MAYSHARE and VM_SHM. when a program do an mmap MAP_SHARED, the vma gets at least the VM_SHARE|VM_MAYSHARE flags. does this mean that it could not be possible to pass a PRIVATE mapping? (i mean, it would be difficult without messing around too much with the kernel) After all there are also problems to decide what should happen when a private copy-on-write file mapping is passed :-) Thanx Maurizio -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
