lib/untyped-retype.c


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#include "object.h"
#include "memory.h"
#include <stddef.h>
#include "error.h"
#include "string.h"

int
ko_untyped_retype_objdir(objdir_entry_t *target)
{
    size_t *untyped = ko_entry_data(target);
    if(*untyped != 0x1000) return -KE_BADSIZE;

    objdir_t *objdir = (objdir_t*)untyped;
    memset(objdir, 0, 0x1000);

    objdir->self = (objdir_entry_t) {
        .type = KO_OBJECT_DIRECTORY,
        .data = target->data
    };
    *target = (objdir_entry_t) {
        .type = KO_OBJECT_DIRECTORY,
        .lock = 0,
        .extra = 0,
        .data = objdir->self.data
    };
    return 0;
}

int
ko_untyped_retype_message(objdir_entry_t *target, uintptr_t vptr)
{
    size_t *untyped = ko_entry_data(target);
    if(*untyped != 0x1000) return -KE_BADSIZE;

    memset(untyped, 0, KO_MESSAGE_BYTES);
    *target = (objdir_entry_t) {
        .type = KO_OBJECT_DIRECTORY,
        .lock = 0,
        .extra = 0,
        .data = target->data
    };
    return 0;
}