#include <common.h>
#include <syscall.h>

void* buffer_init(usize size)
{
	i32 fd = memfd_create("buffer", 0);
	ftruncate(fd, size);

	void* ptr = mmap(null, 2 * size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
	mmap(            ptr, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, fd, 0);
	mmap((c8*)ptr + size, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, fd, 0);

	return ptr;
}