/*===========================================================================*
* do_remap *
*===========================================================================*/
PUBLIC int do_remap(message *m)
{
int dn, sn;
vir_bytes da, sa, startv;
size_t size;
struct vir_region *vr, *region;
struct vmproc *dvmp, *svmp;
int r;
da = (vir_bytes) m->VMRE_DA;
sa = (vir_bytes) m->VMRE_SA;
size = m->VMRE_SIZE;
if ((r = vm_isokendpt((endpoint_t) m->VMRE_D, &dn)) != OK)
return EINVAL;
if ((r = vm_isokendpt((endpoint_t) m->VMRE_S, &sn)) != OK)
return EINVAL;
dvmp = &vmproc[dn];
svmp = &vmproc[sn];
/* da is not translated by arch_vir2map(),
* it's handled a little differently,
* since in map_remap(), we have to know
* about whether the user needs to bind to
* THAT address or be chosen by the system.
*/
sa = arch_vir2map(svmp, sa);
if (!(region = map_lookup(svmp, sa)))
return EINVAL;
if(region->vaddr != sa) {
printf("VM: do_remap: not start of region.\n");
return EFAULT;
}
if(!(region->flags & VR_SHARED)) {
printf("VM: do_remap: not shared.\n");
return EFAULT;
}
if (size % VM_PAGE_SIZE)
size += VM_PAGE_SIZE - size % VM_PAGE_SIZE;
if(size != region->length) {
printf("VM: do_remap: not size of region.\n");
return EFAULT;
}
if ((r = map_remap(dvmp, da, size, region, &startv)) != OK)
return r;
m->VMRE_RETA = (char *) arch_map2vir(dvmp, startv);
return OK;
}
/*===========================================================================*
* do_remap *
*===========================================================================*/
int do_remap(kipc_msg_t *m)
{
int d, dn, s, sn;
vir_bytes da, sa, startv;
size_t size;
struct vir_region *vr, *region;
struct vmproc *dvmp, *svmp;
int r;
d = m->VMRE_D;
s = m->VMRE_S;
da = (vir_bytes) m->VMRE_DA;
sa = (vir_bytes) m->VMRE_SA;
size = m->VMRE_SIZE;
if ((r = vm_isokendpt(d, &dn)) != 0)
return -EINVAL;
if ((r = vm_isokendpt(s, &sn)) != 0)
return -EINVAL;
dvmp = &vmproc[dn];
svmp = &vmproc[sn];
/* da is not translated by arch_vir2map(),
* it's handled a little differently,
* since in map_remap(), we have to know
* about whether the user needs to bind to
* THAT address or be chosen by the system.
*/
sa = arch_vir2map(svmp, sa);
if (!(region = map_lookup(svmp, sa)))
return -EINVAL;
if ((r = map_remap(dvmp, da, size, region, &startv)) != 0)
return r;
m->VMRE_RETA = (char *) arch_map2vir(dvmp, startv);
return 0;
}