Variables starting with `o' in sys

• oitv sys/syscallargs.h:356
• olddelta sys/syscallargs.h:638
• opt sys/syscallargs.h:245
• opv_desc_ops sys/vnode.h:348
• opve_impl sys/vnode.h:343
• osa sys/syscallargs.h:212
• oss sys/syscallargs.h:235
• osv sys/syscallargs.h:470