def write_to_disk_info_file():
# Use os.open to create it without group or world write permission.
fd = os.open(self.disk_info_path, os.O_RDWR | os.O_CREAT, 0o644)
with os.fdopen(fd, "r+") as disk_info_file:
line = disk_info_file.read().rstrip()
dct = _dict_from_line(line)
if self.path in dct:
msg = _("Attempted overwrite of an existing value.")
raise exception.InvalidDiskInfo(reason=msg)
dct.update({self.path: driver_format})
disk_info_file.seek(0)
disk_info_file.truncate()
disk_info_file.write('%s\n' % jsonutils.dumps(dct))
# Ensure the file is always owned by the nova user so qemu can't
# write it.
utils.chown(self.disk_info_path, owner_uid=os.getuid())
def write_to_disk_info_file():
# Use os.open to create it without group or world write permission.
fd = os.open(self.disk_info_path, os.O_RDWR | os.O_CREAT, 0o644)
with os.fdopen(fd, "r+") as disk_info_file:
line = disk_info_file.read().rstrip()
dct = _dict_from_line(line)
if self.path in dct:
msg = _("Attempted overwrite of an existing value.")
raise exception.InvalidDiskInfo(reason=msg)
dct.update({self.path: driver_format})
disk_info_file.seek(0)
disk_info_file.truncate()
disk_info_file.write('%s\n' % jsonutils.dumps(dct))
# Ensure the file is always owned by the nova user so qemu can't
# write it.
utils.chown(self.disk_info_path, owner_uid=os.getuid())