Accessing Pagetable of a process

[Kamal R. Prasad]

there is some code in dragonflybsd to checkpoint a process. It will write
the pagetable to disk. Since the internal data structures aren't much
different -you should be able to copy over that code to freebsd. But you
will run into problems with file descriptors that are not of type vnode (eg
fifo/sockets/pipes etc..).

regards
-kamal



On 1/17/06, Pranav Sawargaonkar <pranav.sawargaonkar at gmail.com> wrote:
>
> Hello,
>        I wanted to save the whole context of the process, thats why I want
> the access to each page allocated to the process of our interest. And
> further I want to write all these pages on to swap.
>        The final objective is to save the context of a stopped process on
> the swap and restore the context afterwards and resume the process.Whatfunctions can be used to read/write to swap ? I have succeeded
> in accessing the vmspace through the 'struct proc' type pointer.
>
> TIA.
>
> Best regards,
> Pranav
>
> On 1/17/06, Kamal R. Prasad <kamalp at acm.org> wrote:
> >
> >
> >
> > On 1/16/06, Pranav Sawargaonkar < pranav.sawargaonkar at gmail.com> wrote:
> > >
> > > Hi
> > > I want to access pagetable of a perticular process.
> > > How i should get it?Is it possible to access by using pointer of type
> > > 'struct proc'?
> >
> >
> > by accessimg the vmspace for the process.
> >
> > Also i want to access each page referenced in
> > > pagetable of that process by writing my module how  i can achieve
> > > this?
> > > Thanks in advance.
> >
> >
> > the pagetable is for translating virtual to physical addresses  If you
> > want the contents of the page -you don't need to worry about the translation
> > scheme. Im not sure I understand what you are looking for??
> >
> > regards
> > -kamal
> >
> >
> >              -Pranav
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