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ptrace: Add PT_POKE

PT_POKE writes a single word to the tracee's address space.

Some caveats:
- If the user requests to write to an address in a read-only region, we
temporarily change the page's protections to allow it.

- If the user requests to write to a region that's backed by a
SharedInodeVMObject, we replace the vmobject with a PrivateIndoeVMObject.
This commit is contained in:
Itamar 2020-04-05 22:58:44 +03:00 committed by Andreas Kling
parent 924fda19b0
commit b306ac9b2b
5 changed files with 52 additions and 3 deletions

View file

@ -37,6 +37,7 @@ __BEGIN_DECLS
#define PT_GETREGS 5
#define PT_DETACH 6
#define PT_PEEK 7
#define PT_POKE 8
int ptrace(int request, pid_t pid, void* addr, int data);