def before(u):
u.gdbsx_guest_memio = ffi.new('struct xen_domctl_gdbsx_memio')
u.gdbsx_guest_memio.pgd3val = pgd3val
u.gdbsx_guest_memio.gva = gva
u.gdbsx_guest_memio.uva = uva
u.gdbsx_guest_memio.len = len_
u.gdbsx_guest_memio.gwr = gwr
def domain_get_guest_width(self, domid):
word_size = ffi.new('unsigned int *')
err = lib.xc_domain_get_guest_width(self.xch, domid, word_size)
if err != 0:
raise XenException('Failed to get word size for domain',
self.domid,
'with err =',
err,
errno=True)
return word_size[0]
def map_by_mfn(self, domid, base_mfn, offset, size, prot):
num_pages = (size + lib.XC_PAGE_SIZE - 1) >> lib.XC_PAGE_SHIFT
pages = ffi.new('xen_pfn_t[]',
[base_mfn + i for i in range(num_pages)])
mem_page_base = lib.xenforeignmemory_map(self.fmem, domid, prot,
num_pages, pages, ffi.NULL)
if mem_page_base == ffi.NULL:
raise XenException('failed to map xen foreign memory', errno=True)
def cleanup():
err = lib.xenforeignmemory_unmap(self.fmem, mem_page_base,
num_pages)
if err:
raise XenException('failed to unmap xen foreign memory',
mem_page_base,
'with err',
err,
errno=True)
return mem_page_base + offset, cleanup
def vcpu_getcontext(self, domid, vcpu):
ctxt = ffi.new('vcpu_guest_context_any_t *')
err = lib.xc_vcpu_getcontext(self.xch, domid, vcpu, ctxt)
if err != 0:
raise XenException('Failed to get vcpu context', errno=True)
return ctxt
def domain_getinfo(self, domid):
dominfo = ffi.new('xc_dominfo_t *')
n = lib.xc_domain_getinfo(self.xch, domid, 1, dominfo)
if n != 1:
raise XenException('Failed to get domain info', errno=True)
return dominfo
def directory(self, path):
num_entries = ffi.new('unsigned int *')
entries = lib.xs_directory(self.xsh, lib.XBT_NULL, path, num_entries)
if entries == ffi.NULL:
raise XenException('failed to read directory', path, errno=True)
return [ffi.string(entries[i]) for i in range(num_entries[0])]