6
extern uiolen f__reclen;
16
f__external=f__sequential=1;
18
f__curunit = &f__units[a->ciunit];
19
if(a->ciunit >= MXUNIT || a->ciunit < 0)
20
err(a->cierr,101,"startio");
22
if(f__curunit->ufd==NULL && fk_open(SEQ,UNF,a->ciunit))
23
err(a->cierr,114,"sue");
24
f__cf=f__curunit->ufd;
25
if(f__curunit->ufmt) err(a->cierr,103,"sue")
26
if(!f__curunit->useek) err(a->cierr,103,"sue")
30
integer s_rsue(a) cilist *a;
32
integer s_rsue(cilist *a)
36
if(!f__init) f_init();
38
if(n=c_sue(a)) return(n);
40
if(f__curunit->uwrt && f__nowreading(f__curunit))
41
err(a->cierr, errno, "read start");
42
if(fread((char *)&f__reclen,sizeof(uiolen),1,f__cf)
45
{ f__curunit->uend = 1;
46
err(a->ciend, EOF, "start");
49
err(a->cierr, errno, "start");
54
integer s_wsue(a) cilist *a;
56
integer s_wsue(cilist *a)
60
if(!f__init) f_init();
61
if(n=c_sue(a)) return(n);
64
if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
65
err(a->cierr, errno, "write start");
66
f__recloc=FTELL(f__cf);
67
FSEEK(f__cf,(OFF_T)sizeof(uiolen),SEEK_CUR);
72
fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
75
err(f__elist->cierr, errno, "write end");
78
FSEEK(f__cf,f__recloc,SEEK_SET);
79
fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
80
FSEEK(f__cf,loc,SEEK_SET);
85
FSEEK(f__cf,(OFF_T)(f__reclen-f__recpos+sizeof(uiolen)),SEEK_CUR);