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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
     27 /*	  All Rights Reserved  	*/
     28 
     29 /*
     30  * Portions of this source code were derived from Berkeley 4.3 BSD
     31  * under license from the Regents of the University of California.
     32  */
     33 
     34 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     35 
     36 #include <sys/param.h>
     37 #include <sys/isa_defs.h>
     38 #include <sys/types.h>
     39 #include <sys/sysmacros.h>
     40 #include <sys/cred.h>
     41 #include <sys/systm.h>
     42 #include <sys/errno.h>
     43 #include <sys/vnode.h>
     44 #include <sys/file.h>
     45 #include <sys/mode.h>
     46 #include <sys/debug.h>
     47 
     48 /*
     49  * Flush output pending for file.
     50  */
     51 int
     52 fdsync(int fd, int flag)
     53 {
     54 	file_t *fp;
     55 	register int error;
     56 	int syncflag;
     57 
     58 	if ((fp = getf(fd)) != NULL) {
     59 		/*
     60 		 * This flag will determine the file sync
     61 		 * or data sync.
     62 		 * FSYNC : file sync
     63 		 * FDSYNC : data sync
     64 		 */
     65 		syncflag = flag & (FSYNC|FDSYNC);
     66 
     67 		if (error = VOP_FSYNC(fp->f_vnode, syncflag, fp->f_cred, NULL))
     68 			(void) set_errno(error);
     69 		releasef(fd);
     70 	} else
     71 		error = set_errno(EBADF);
     72 	return (error);
     73 }
     74