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Annotation of 41BSD/lib/libI77uc/rewind.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * rewind.c  -  f77 file rewind
                      3:  */
                      4: 
                      5: #include "fio.h"
                      6: 
                      7: f_rew(a) alist *a;
                      8: {      int n;
                      9:        unit *b;
                     10: 
                     11:        lfname = NULL;
                     12:        elist = NO;
                     13:        external = YES;                 /* for err */
                     14:        lunit = a->aunit;
                     15:        errflag = a->aerr;
                     16:        if(not_legal(lunit)) err(errflag,101,"rewind")
                     17:        b = &units[lunit];
                     18:        if(!b->ufd && (n=fk_open(READ,SEQ,FMT,(ftnint)lunit)) )
                     19:                err(errflag,n,"rewind")
                     20:        lfname = b->ufnm;
                     21:        if(!b->useek) err(errflag,106,"rewind")
                     22:        b->uend = NO;
                     23:        if(b->uwrt)
                     24:                if(n=t_runc(b,errflag)) return(n);
                     25:        rewind(b->ufd);
                     26:        return(OK);
                     27: }

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