Changes

* Ptrace SEIZE, used to grab pages from task's VM into a pipe (with vmsplice)

* Ptrace SEIZE, used to grab pages from task's VM into a pipe (with vmsplice)

The last step deserves a more detailed explanation. In order to drain memory from a task, we first generate the bitmap of pages needed to be dumped (using the smaps, map_files and pagemap from proc). Next, we create a set of pipes to put pages into. Then we infect the process with [[parasite code]], which, in turn, gets the pipes and <code>vmsplice</code>s the required pages into it. Finally, we <code>splice</code> the pages from pipes into [[memory dumps|image files]].

The last step deserves a more detailed explanation. In order to drain memory from a task, we first generate the bitmap of pages needed to be dumped (using the smaps, map_files and [[pagemap cache]] filled from proc). Next, we create a set of pipes to put pages into. Then we infect the process with [[parasite code]], which, in turn, gets the pipes and <code>vmsplice</code>s the required pages into it. Finally, we <code>splice</code> the pages from pipes into [[memory dumps|image files]].

=== Restoring ===

=== Restoring ===