projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| bae7117f WH |
1 | #include "f2c.h" |
| 2 | #include "fio.h" | |
| 3 | ||
| 4 | #ifdef KR_headers | |
| 5 | c_due(a) cilist *a; | |
| 6 | #else | |
| 7 | c_due(cilist *a) | |
| 8 | #endif | |
| 9 | { | |
| 10 | if(!f__init) f_init(); | |
| 11 | if(a->ciunit>=MXUNIT || a->ciunit<0) | |
| 12 | err(a->cierr,101,"startio"); | |
| 13 | f__sequential=f__formatted=f__recpos=0; | |
| 14 | f__external=1; | |
| 15 | f__curunit = &f__units[a->ciunit]; | |
| 16 | f__elist=a; | |
| 17 | if(f__curunit->ufd==NULL && fk_open(DIR,UNF,a->ciunit) ) err(a->cierr,104,"due"); | |
| 18 | f__cf=f__curunit->ufd; | |
| 19 | if(f__curunit->ufmt) err(a->cierr,102,"cdue") | |
| 20 | if(!f__curunit->useek) err(a->cierr,104,"cdue") | |
| 21 | if(f__curunit->ufd==NULL) err(a->cierr,114,"cdue") | |
| 22 | (void) fseek(f__cf,(long)(a->cirec-1)*f__curunit->url,SEEK_SET); | |
| 23 | f__curunit->uend = 0; | |
| 24 | return(0); | |
| 25 | } | |
| 26 | #ifdef KR_headers | |
| 27 | integer s_rdue(a) cilist *a; | |
| 28 | #else | |
| 29 | integer s_rdue(cilist *a) | |
| 30 | #endif | |
| 31 | { | |
| 32 | int n; | |
| 33 | if(n=c_due(a)) return(n); | |
| 34 | f__reading=1; | |
| 35 | if(f__curunit->uwrt && f__nowreading(f__curunit)) | |
| 36 | err(a->cierr,errno,"read start"); | |
| 37 | return(0); | |
| 38 | } | |
| 39 | #ifdef KR_headers | |
| 40 | integer s_wdue(a) cilist *a; | |
| 41 | #else | |
| 42 | integer s_wdue(cilist *a) | |
| 43 | #endif | |
| 44 | { | |
| 45 | int n; | |
| 46 | if(n=c_due(a)) return(n); | |
| 47 | f__reading=0; | |
| 48 | if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit)) | |
| 49 | err(a->cierr,errno,"write start"); | |
| 50 | return(0); | |
| 51 | } | |
| 52 | integer e_rdue(Void) | |
| 53 | { | |
| 54 | if(f__curunit->url==1 || f__recpos==f__curunit->url) | |
| 55 | return(0); | |
| 56 | (void) fseek(f__cf,(long)(f__curunit->url-f__recpos),SEEK_CUR); | |
| 57 | if(ftell(f__cf)%f__curunit->url) | |
| 58 | err(f__elist->cierr,200,"syserr"); | |
| 59 | return(0); | |
| 60 | } | |
| 61 | integer e_wdue(Void) | |
| 62 | { | |
| 63 | return(e_rdue()); | |
| 64 | } |