due.c File Reference

#include "f2c.h"
#include "fio.h"

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Functions
int	c_due (cilist *a)
integer	s_rdue (cilist *a)
integer	s_wdue (cilist *a)
integer	e_rdue (Void)
integer	e_wdue (Void)

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Function Documentation

int c_due

(

cilist *

a

)

Definition at line 11 of file due.c.

References a, DIR, err, f__cf, f__curunit, f__elist, f__external, f__formatted, f__init, f__recpos, f__sequential, f__units, f_init(), fk_open(), FSEEK, MXUNIT, NULL, OFF_T, SEEK_SET, unit::uend, unit::ufd, unit::ufmt, UNF, unit::url, and unit::useek.

Referenced by s_rdue(), and s_wdue().

{
        if(!f__init) f_init();
        f__sequential=f__formatted=f__recpos=0;
        f__external=1;
        f__curunit = &f__units[a->ciunit];
        if(a->ciunit>=MXUNIT || a->ciunit<0)
                err(a->cierr,101,"startio");
        f__elist=a;
        if(f__curunit->ufd==NULL && fk_open(DIR,UNF,a->ciunit) ) err(a->cierr,104,"due");
        f__cf=f__curunit->ufd;
        if(f__curunit->ufmt) err(a->cierr,102,"cdue")
        if(!f__curunit->useek) err(a->cierr,104,"cdue")
        if(f__curunit->ufd==NULL) err(a->cierr,114,"cdue")
        if(a->cirec <= 0)
                err(a->cierr,130,"due")
        FSEEK(f__cf,(OFF_T)(a->cirec-1)*f__curunit->url,SEEK_SET);
        f__curunit->uend = 0;
        return(0);
}

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integer e_rdue

(

Void

)

Definition at line 58 of file due.c.

References cilist::cierr, err, f__cf, f__curunit, f__elist, f__recpos, FSEEK, FTELL, OFF_T, SEEK_CUR, and unit::url.

Referenced by e_wdue().

{
        if(f__curunit->url==1 || f__recpos==f__curunit->url)
                return(0);
        FSEEK(f__cf,(OFF_T)(f__curunit->url-f__recpos),SEEK_CUR);
        if(FTELL(f__cf)%f__curunit->url)
                err(f__elist->cierr,200,"syserr");
        return(0);
}

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integer e_wdue

(

Void

)

Definition at line 67 of file due.c.

References cilist::cierr, e_rdue(), err, errno, f__cf, and f__elist.

{
#ifdef ALWAYS_FLUSH
        if (fflush(f__cf))
                err(f__elist->cierr,errno,"write end");
#endif
        return(e_rdue());
}

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integer s_rdue

(

cilist *

a

)

Definition at line 35 of file due.c.

References a, c_due(), err, errno, f__curunit, f__nowreading(), f__reading, n, and unit::uwrt.

{
        int n;
        f__reading=1;
        if(n=c_due(a)) return(n);
        if(f__curunit->uwrt && f__nowreading(f__curunit))
                err(a->cierr,errno,"read start");
        return(0);
}

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integer s_wdue

(

cilist *

a

)

Definition at line 48 of file due.c.

References a, c_due(), err, errno, f__curunit, f__nowwriting(), f__reading, n, and unit::uwrt.

{
        int n;
        f__reading=0;
        if(n=c_due(a)) return(n);
        if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
                err(a->cierr,errno,"write start");
        return(0);
}

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