mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-22 00:42:06 +01:00
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
#include "config.h"
|
|
#include "f2c.h"
|
|
#include "fio.h"
|
|
extern uiolen f__reclen;
|
|
off_t f__recloc;
|
|
|
|
int
|
|
c_sue (cilist * a)
|
|
{
|
|
f__external = f__sequential = 1;
|
|
f__formatted = 0;
|
|
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 (SEQ, UNF, a->ciunit))
|
|
err (a->cierr, 114, "sue");
|
|
f__cf = f__curunit->ufd;
|
|
if (f__curunit->ufmt)
|
|
err (a->cierr, 103, "sue");
|
|
if (!f__curunit->useek)
|
|
err (a->cierr, 103, "sue");
|
|
return (0);
|
|
}
|
|
|
|
integer
|
|
s_rsue (cilist * a)
|
|
{
|
|
int n;
|
|
if (f__init != 1)
|
|
f_init ();
|
|
f__init = 3;
|
|
f__reading = 1;
|
|
if ((n = c_sue (a)))
|
|
return (n);
|
|
f__recpos = 0;
|
|
if (f__curunit->uwrt && f__nowreading (f__curunit))
|
|
err (a->cierr, errno, "read start");
|
|
if (fread ((char *) &f__reclen, sizeof (uiolen), 1, f__cf) != 1)
|
|
{
|
|
if (feof (f__cf))
|
|
{
|
|
f__curunit->uend = 1;
|
|
err (a->ciend, EOF, "start");
|
|
}
|
|
clearerr (f__cf);
|
|
err (a->cierr, errno, "start");
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
integer
|
|
s_wsue (cilist * a)
|
|
{
|
|
int n;
|
|
if (f__init != 1)
|
|
f_init ();
|
|
f__init = 3;
|
|
if ((n = c_sue (a)))
|
|
return (n);
|
|
f__reading = 0;
|
|
f__reclen = 0;
|
|
if (f__curunit->uwrt != 1 && f__nowwriting (f__curunit))
|
|
err (a->cierr, errno, "write start");
|
|
f__recloc = FTELL (f__cf);
|
|
FSEEK (f__cf, (off_t) sizeof (uiolen), SEEK_CUR);
|
|
return (0);
|
|
}
|
|
|
|
integer
|
|
e_wsue (void)
|
|
{
|
|
off_t loc;
|
|
f__init = 1;
|
|
fwrite ((char *) &f__reclen, sizeof (uiolen), 1, f__cf);
|
|
#ifdef ALWAYS_FLUSH
|
|
if (fflush (f__cf))
|
|
err (f__elist->cierr, errno, "write end");
|
|
#endif
|
|
loc = FTELL (f__cf);
|
|
FSEEK (f__cf, f__recloc, SEEK_SET);
|
|
fwrite ((char *) &f__reclen, sizeof (uiolen), 1, f__cf);
|
|
FSEEK (f__cf, loc, SEEK_SET);
|
|
return (0);
|
|
}
|
|
|
|
integer
|
|
e_rsue (void)
|
|
{
|
|
f__init = 1;
|
|
FSEEK (f__cf, (off_t) (f__reclen - f__recpos + sizeof (uiolen)), SEEK_CUR);
|
|
return (0);
|
|
}
|