35 	Sfio_t*		parent;	/* parent stream */  member
53 	reg Sfoff_t	here, parent;  local
65 	parent = sfsk(f,(Sfoff_t)0,SEEK_CUR,disc);
80 	sfsk(f,parent,SEEK_SET,disc);
122 	reg Sfoff_t	here, parent;  local
138 		{	parent = sfsk(f,(Sfoff_t)0,SEEK_CUR,disc);
142 			sfsk(f,parent,SEEK_SET,disc);
172 Sfio_t* sfdcsubstream(Sfio_t* f, Sfio_t* parent, Sfoff_t offset, Sfoff_t extent)  in sfdcsubstream()  argument
174 Sfio_t* sfdcsubstream(f, parent, offset, extent)  in sfdcsubstream()
176 Sfio_t*	parent;	/* parent stream */
186 	if((here = sfseek(parent,(Sfoff_t)0,SEEK_CUR)) < 0 || sfseek(parent,offset,SEEK_SET) < 0)
188 	else	sfseek(parent,here,SEEK_SET);
189 	sfpurge(parent);
191 …(sp = sfnew(NIL(Sfio_t*), NIL(Void_t*), (size_t)SF_UNBOUND, dup(sffileno(parent)), parent->flags)))
205 	su->parent = parent;