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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2004
* Sleepycat Software. All rights reserved.
*
* $Id: os_fsync.c,v 11.22 2004/07/06 20:54:09 mjc Exp $
*/
#include "db_config.h"
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <fcntl.h> /* XXX: Required by __hp3000s900 */
#include <string.h>
#include <unistd.h>
#endif
#include "db_int.h"
#ifdef HAVE_VXWORKS
#include "ioLib.h"
#define fsync(fd) __vx_fsync(fd)
int
__vx_fsync(fd)
int fd;
{
int ret;
/*
* The results of ioctl are driver dependent. Some will return the
* number of bytes sync'ed. Only if it returns 'ERROR' should we
* flag it.
*/
if ((ret = ioctl(fd, FIOSYNC, 0)) != ERROR)
return (0);
return (ret);
}
#endif
#ifdef __hp3000s900
#define fsync(fd) __mpe_fsync(fd)
int
__mpe_fsync(fd)
int fd;
{
extern FCONTROL(short, short, void *);
FCONTROL(_MPE_FILENO(fd), 2, NULL); /* Flush the buffers */
FCONTROL(_MPE_FILENO(fd), 6, NULL); /* Write the EOF */
return (0);
}
#endif
/*
* __os_fsync --
* Flush a file descriptor.
*
* PUBLIC: int __os_fsync __P((DB_ENV *, DB_FH *));
*/
int
__os_fsync(dbenv, fhp)
DB_ENV *dbenv;
DB_FH *fhp;
{
int ret;
/*
* Do nothing if the file descriptor has been marked as not requiring
* any sync to disk.
*/
if (F_ISSET(fhp, DB_FH_NOSYNC))
return (0);
/* Check for illegal usage. */
DB_ASSERT(F_ISSET(fhp, DB_FH_OPENED) && fhp->fd != -1);
if (DB_GLOBAL(j_fsync) != NULL)
ret = DB_GLOBAL(j_fsync)(fhp->fd);
else
#ifdef HAVE_FDATASYNC
RETRY_CHK((fdatasync(fhp->fd)), ret);
#else
RETRY_CHK((fsync(fhp->fd)), ret);
#endif
if (ret != 0)
__db_err(dbenv, "fsync %s", strerror(ret));
return (ret);
}
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