NSCD_PHDR_LEN
(void) memcpy(space, (hdrp), NSCD_PHDR_LEN((hdrp))); \
(void) memcpy((bufp), (hdrp), NSCD_PHDR_LEN(hdrp)); \
NSCD_PHDR_LEN(hdrp), NULL, 0); \
arg_size = NSCD_PHDR_LEN(hdrp) + (NSCD_DATA_LEN(hdrp) > 0 ? \
arg_size = NSCD_PHDR_LEN(hdrp);