extern void sw_init P((char*, unsigned int, unsigned int, unsigned int)); extern void sw_finish P((void)); extern void sw_newv P((sector*, unsigned int)); extern void sw_wipev P((sector*, unsigned int)); extern void sw_delv P((sector*, unsigned int)); extern void sw_readv P((char*, sector*, Uint, Uint)); extern void sw_writev P((char*, sector*, Uint, Uint)); extern void sw_dreadv P((char*, sector*, Uint, Uint)); extern sector sw_mapsize P((unsigned int)); extern sector sw_count P((void)); extern void sw_copy P((void)); extern int sw_dump P((char*)); extern void sw_restore P((int, unsigned int));