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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1999, 2000
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: os_finit.c,v 1.1 2000/06/21 20:05:18 sue Exp $";
#endif /* not lint */
#include "db_int.h"
/*
* __os_fpinit --
* Initialize a page in a regular file.
*
* PUBLIC: int __os_fpinit __P((DB_ENV *, DB_FH *, db_pgno_t, int, int));
*/
int
__os_fpinit(dbenv, fhp, pgno, pagecount, pagesize)
DB_ENV *dbenv;
DB_FH *fhp;
db_pgno_t pgno;
int pagecount, pagesize;
{
size_t nw, totalbytes, curbytes;
int ret;
char buf[1024];
/*
* Some VxWorks FS drivers do not zero-fill pages that were never
* explicitly written to the file, they give you random garbage,
* and that breaks DB.
*/
if ((ret = __os_seek(dbenv,
fhp, pagesize, pgno, 0, 0, DB_OS_SEEK_SET)) != 0)
return (ret);
memset(buf, 0, sizeof(buf));
totalbytes = pagecount * pagesize;
while (totalbytes > 0) {
if (totalbytes > sizeof(buf))
curbytes = sizeof(buf);
else
curbytes = totalbytes;
if ((ret = __os_write(dbenv, fhp, buf, curbytes, &nw)) != 0)
return (ret);
if (nw != curbytes)
return (EIO);
totalbytes -= curbytes;
}
return (0);
}
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