getoffset
if ((name = getoffset(name, &stdoff)) == NULL)
if ((name = getoffset(name, &dstoff)) == NULL)
static const char *getoffset(const char *, long *);
u_offset_t (*getoffset)(struct seg *, caddr_t);
#define SEGOP_GETOFFSET(s, a) (*(s)->s_ops->getoffset)((s), (a))
.getoffset = segvmm_getoffset,