xref: /illumos-gate/usr/src/uts/common/syscall/fdsync.c (revision 2d6eb4a5)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/

/*
 * Portions of this source code were derived from Berkeley 4.3 BSD
 * under license from the Regents of the University of California.
 */

#include <sys/param.h>
#include <sys/isa_defs.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/cred.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/mode.h>
#include <sys/debug.h>

/*
 * Flush output pending for file.
 */
int
fdsync(int fd, int flag)
{
	file_t *fp;
	register int error;
	int syncflag;

	if ((fp = getf(fd)) != NULL) {
		/*
		 * This flag will determine the file sync
		 * or data sync.
		 * FSYNC : file sync
		 * FDSYNC : data sync
		 */
		syncflag = flag & (FSYNC|FDSYNC);

		if (error = VOP_FSYNC(fp->f_vnode, syncflag, fp->f_cred, NULL))
			(void) set_errno(error);
		releasef(fd);
	} else
		error = set_errno(EBADF);
	return (error);
}