mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 21:12:26 +01:00
58 lines
1 KiB
C
58 lines
1 KiB
C
/*-
|
|
* See the file LICENSE for redistribution information.
|
|
*
|
|
* Copyright (c) 2004
|
|
* Sleepycat Software. All rights reserved.
|
|
*
|
|
* $Id: os_truncate.c,v 11.7 2004/09/17 22:00:31 mjc Exp $
|
|
*/
|
|
|
|
#include "db_config.h"
|
|
|
|
#ifndef NO_SYSTEM_INCLUDES
|
|
#include <sys/types.h>
|
|
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "db_int.h"
|
|
|
|
/*
|
|
* __os_truncate --
|
|
* Truncate the file.
|
|
*
|
|
* PUBLIC: int __os_truncate __P((DB_ENV *, DB_FH *, db_pgno_t, u_int32_t));
|
|
*/
|
|
int
|
|
__os_truncate(dbenv, fhp, pgno, pgsize)
|
|
DB_ENV *dbenv;
|
|
DB_FH *fhp;
|
|
db_pgno_t pgno;
|
|
u_int32_t pgsize;
|
|
{
|
|
off_t offset;
|
|
int ret;
|
|
|
|
/*
|
|
* Truncate a file so that "pgno" is discarded from the end of the
|
|
* file.
|
|
*/
|
|
offset = (off_t)pgsize * pgno;
|
|
|
|
if (DB_GLOBAL(j_ftruncate) != NULL)
|
|
ret = DB_GLOBAL(j_ftruncate)(fhp->fd, offset);
|
|
else {
|
|
#ifdef HAVE_FTRUNCATE
|
|
RETRY_CHK((ftruncate(fhp->fd, offset)), ret);
|
|
#else
|
|
ret = DB_OPNOTSUP;
|
|
#endif
|
|
}
|
|
|
|
if (ret != 0)
|
|
__db_err(dbenv,
|
|
"ftruncate: %lu: %s", (u_long)offset, strerror(ret));
|
|
|
|
return (ret);
|
|
}
|