#include "zero.h"
#include "alloc.h"

struct zeroMappedEntry {
        int refCnt;
};

static int zeroOpen(struct uAddrVirtualReg *vreg)
{
        (void)vreg;
        return 0;
}
static int zeroClose(struct uAddrVirtualReg *vreg)
{
        (void)vreg;
        return 0;
}
static int zeroNoPage(struct uAddrVirtualReg *vreg, uaddr_t addr, int right)
{
        (void)vreg;
        (void)addr;
        (void)right;
        return 0;
}

static struct mappedRessourceOps zeroOps = {
    .open   = zeroOpen,
    .close  = zeroClose,
    .unmap  = NULL,
    .nopage = zeroNoPage,
};

int zeroMmap(struct uAddrSpace *as, uaddr_t *uaddr, size_t size, uint32_t rights, uint32_t flags)
{
        struct mappedRessource *res  = (struct mappedRessource *)zalloc(sizeof(struct mappedRessource));
        struct zeroMappedEntry *cust = (struct zeroMappedEntry *)zalloc(sizeof(struct zeroMappedEntry));

        res->allowedRight = PAGING_MEM_READ | PAGING_MEM_WRITE | PAGING_MEM_EXEC | PAGING_MEM_USER;
        res->ops          = &zeroOps;
        res->customData   = cust;

        uAddrSpaceMmap(as, uaddr, size, rights, flags, res);

        return 0;
}