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95 lines
1.7 KiB
C
95 lines
1.7 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997-2005
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* Sleepycat Software. All rights reserved.
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*
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* $Id: os_fsync.c,v 12.3 2005/09/07 17:30:20 bostic Exp $
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*/
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#include "db_config.h"
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <fcntl.h> /* Required on some platforms. */
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#include <string.h>
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#endif
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#include "db_int.h"
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#ifdef HAVE_VXWORKS
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#include "ioLib.h"
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#define fsync(fd) __vx_fsync(fd)
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int
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__vx_fsync(fd)
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int fd;
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{
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int ret;
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/*
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* The results of ioctl are driver dependent. Some will return the
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* number of bytes sync'ed. Only if it returns 'ERROR' should we
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* flag it.
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*/
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if ((ret = ioctl(fd, FIOSYNC, 0)) != ERROR)
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return (0);
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return (ret);
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}
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#endif
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#ifdef __hp3000s900
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#define fsync(fd) __mpe_fsync(fd)
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int
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__mpe_fsync(fd)
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int fd;
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{
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extern FCONTROL(short, short, void *);
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FCONTROL(_MPE_FILENO(fd), 2, NULL); /* Flush the buffers */
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FCONTROL(_MPE_FILENO(fd), 6, NULL); /* Write the EOF */
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return (0);
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}
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#endif
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/*
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* __os_fsync --
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* Flush a file descriptor.
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*
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* PUBLIC: int __os_fsync __P((DB_ENV *, DB_FH *));
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*/
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int
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__os_fsync(dbenv, fhp)
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DB_ENV *dbenv;
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DB_FH *fhp;
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{
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int ret;
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/* Check for illegal usage. */
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DB_ASSERT(F_ISSET(fhp, DB_FH_OPENED) && fhp->fd != -1);
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/*
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* Do nothing if the file descriptor has been marked as not requiring
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* any sync to disk.
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*/
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if (F_ISSET(fhp, DB_FH_NOSYNC))
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return (0);
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if (DB_GLOBAL(j_fsync) != NULL)
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ret = DB_GLOBAL(j_fsync)(fhp->fd);
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else
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#if defined(F_FULLFSYNC)
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RETRY_CHK((fcntl(fhp->fd, F_FULLFSYNC, 0)), ret);
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#elif defined(HAVE_FDATASYNC)
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RETRY_CHK((fdatasync(fhp->fd)), ret);
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#else
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RETRY_CHK((fsync(fhp->fd)), ret);
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#endif
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if (ret != 0)
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__db_err(dbenv, "fsync %s", strerror(ret));
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return (ret);
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}
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