xref: /illumos-gate/usr/src/uts/common/syscall/unlink.c (revision 6a634c9d)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5d3e55dcdSgww  * Common Development and Distribution License (the "License").
6d3e55dcdSgww  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
218fd04b83SRoger A. Faulkner 
227c478bd9Sstevel@tonic-gate /*
23c4d3e299SBrent Paulson  * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
247c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
277c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley 4.3 BSD
317c478bd9Sstevel@tonic-gate  * under license from the Regents of the University of California.
327c478bd9Sstevel@tonic-gate  */
347c478bd9Sstevel@tonic-gate #include <sys/param.h>
357c478bd9Sstevel@tonic-gate #include <sys/isa_defs.h>
367c478bd9Sstevel@tonic-gate #include <sys/types.h>
377c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
387c478bd9Sstevel@tonic-gate #include <sys/systm.h>
397c478bd9Sstevel@tonic-gate #include <sys/errno.h>
407c478bd9Sstevel@tonic-gate #include <sys/vnode.h>
417c478bd9Sstevel@tonic-gate #include <sys/uio.h>
427c478bd9Sstevel@tonic-gate #include <sys/debug.h>
437c478bd9Sstevel@tonic-gate #include <sys/file.h>
447c478bd9Sstevel@tonic-gate #include <sys/fcntl.h>
457c478bd9Sstevel@tonic-gate #include <c2/audit.h>
477c478bd9Sstevel@tonic-gate /*
487c478bd9Sstevel@tonic-gate  * Unlink a file from a directory
497c478bd9Sstevel@tonic-gate  */
507c478bd9Sstevel@tonic-gate int
unlinkat(int fd,char * name,int flags)517c478bd9Sstevel@tonic-gate unlinkat(int fd, char *name, int flags)
527c478bd9Sstevel@tonic-gate {
53*794f0adbSRoger A. Faulkner 	vnode_t *startvp;
547c478bd9Sstevel@tonic-gate 	int error;
56*794f0adbSRoger A. Faulkner 	if (name == NULL)
577c478bd9Sstevel@tonic-gate 		return (set_errno(EFAULT));
58*794f0adbSRoger A. Faulkner 	if ((error = fgetstartvp(fd, name, &startvp)) != 0)
59*794f0adbSRoger A. Faulkner 		return (set_errno(error));
60*794f0adbSRoger A. Faulkner 	if (AU_AUDITING() && startvp != NULL)
617c478bd9Sstevel@tonic-gate 		audit_setfsat_path(1);
63*794f0adbSRoger A. Faulkner 	error = vn_removeat(startvp, name, UIO_USERSPACE,
64*794f0adbSRoger A. Faulkner 	    (flags == AT_REMOVEDIR) ? RMDIRECTORY : RMFILE);
65*794f0adbSRoger A. Faulkner 	if (startvp != NULL)
66*794f0adbSRoger A. Faulkner 		VN_RELE(startvp);
67*794f0adbSRoger A. Faulkner 	if (error)
687c478bd9Sstevel@tonic-gate 		return (set_errno(error));
697c478bd9Sstevel@tonic-gate 	return (0);
707c478bd9Sstevel@tonic-gate }
718fd04b83SRoger A. Faulkner 
728fd04b83SRoger A. Faulkner int
unlink(char * name)738fd04b83SRoger A. Faulkner unlink(char *name)
748fd04b83SRoger A. Faulkner {
758fd04b83SRoger A. Faulkner 	return (unlinkat(AT_FDCWD, name, 0));
768fd04b83SRoger A. Faulkner }
778fd04b83SRoger A. Faulkner 
788fd04b83SRoger A. Faulkner int
rmdir(char * name)798fd04b83SRoger A. Faulkner rmdir(char *name)
808fd04b83SRoger A. Faulkner {
818fd04b83SRoger A. Faulkner 	return (unlinkat(AT_FDCWD, name, AT_REMOVEDIR));
828fd04b83SRoger A. Faulkner }