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Userland: Add LibSystem and funnel all syscalls through it

This achieves two things:

- Programs can now intentionally perform arbitrary syscalls by calling
  syscall(). This allows us to work on things like syscall fuzzing.

- It restricts the ability of userspace to make syscalls to a single
  4KB page of code. In order to call the kernel directly, an attacker
  must now locate this page and call through it.
This commit is contained in:
Andreas Kling 2021-02-05 12:16:30 +01:00
parent 4df3a34bc2
commit e87eac9273
47 changed files with 164 additions and 47 deletions

View file

@ -28,7 +28,6 @@
#include <AK/Atomic.h>
#include <AK/Debug.h>
#include <AK/StdLibExtras.h>
#include <Kernel/API/Syscall.h>
#include <limits.h>
#include <pthread.h>
#include <serenity.h>
@ -36,6 +35,7 @@
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <syscall.h>
#include <time.h>
#include <unistd.h>