81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
#include "config.h"
|
|
#include "f2c.h"
|
|
#include "fio.h"
|
|
|
|
int
|
|
c_due (cilist * a)
|
|
{
|
|
if (f__init != 1)
|
|
f_init ();
|
|
f__init = 3;
|
|
if (a->ciunit >= MXUNIT || a->ciunit < 0)
|
|
err (a->cierr, 101, "startio");
|
|
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);
|
|
}
|
|
|
|
integer
|
|
s_rdue (cilist * a)
|
|
{
|
|
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);
|
|
}
|
|
|
|
integer
|
|
s_wdue (cilist * a)
|
|
{
|
|
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);
|
|
}
|
|
|
|
integer
|
|
e_rdue (void)
|
|
{
|
|
f__init = 1;
|
|
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);
|
|
}
|
|
|
|
integer
|
|
e_wdue (void)
|
|
{
|
|
f__init = 1;
|
|
#ifdef ALWAYS_FLUSH
|
|
if (fflush (f__cf))
|
|
err (f__elist->cierr, errno, "write end");
|
|
#endif
|
|
return (e_rdue ());
|
|
}
|