3 extern uiolen f__reclen;
12 f__external=f__sequential=1;
14 f__curunit = &f__units[a->ciunit];
15 if(a->ciunit >= MXUNIT || a->ciunit < 0)
16 err(a->cierr,101,"startio");
18 if(f__curunit->ufd==NULL && fk_open(SEQ,UNF,a->ciunit))
19 err(a->cierr,114,"sue");
20 f__cf=f__curunit->ufd;
21 if(f__curunit->ufmt) err(a->cierr,103,"sue");
22 if(!f__curunit->useek) err(a->cierr,103,"sue");
26 integer s_rsue(a) cilist *a;
28 integer s_rsue(cilist *a)
32 if(f__init != 1) f_init();
35 if(n=c_sue(a)) return(n);
37 if(f__curunit->uwrt && f__nowreading(f__curunit))
38 err(a->cierr, errno, "read start");
39 if(fread((char *)&f__reclen,sizeof(uiolen),1,f__cf)
42 { f__curunit->uend = 1;
43 err(a->ciend, EOF, "start");
46 err(a->cierr, errno, "start");
51 integer s_wsue(a) cilist *a;
53 integer s_wsue(cilist *a)
57 if(f__init != 1) f_init();
59 if(n=c_sue(a)) return(n);
62 if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
63 err(a->cierr, errno, "write start");
64 f__recloc=ftell(f__cf);
65 (void) fseek(f__cf,(long)sizeof(uiolen),SEEK_CUR);
71 fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
74 err(f__elist->cierr, errno, "write end");
77 fseek(f__cf,f__recloc,SEEK_SET);
78 fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
79 fseek(f__cf,loc,SEEK_SET);
85 (void) fseek(f__cf,(long)(f__reclen-f__recpos+sizeof(uiolen)),SEEK_CUR);