xref: /illumos-gate/usr/src/uts/common/syscall/chown.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
5f48205beScasper  * Common Development and Distribution License (the "License").
6f48205beScasper  * 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  */
257c478bd9Sstevel@tonic-gate 
267c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
277c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
287c478bd9Sstevel@tonic-gate 
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  */
337c478bd9Sstevel@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/fcntl.h>
417c478bd9Sstevel@tonic-gate #include <sys/pathname.h>
427c478bd9Sstevel@tonic-gate #include <sys/var.h>
437c478bd9Sstevel@tonic-gate #include <sys/vfs.h>
447c478bd9Sstevel@tonic-gate #include <sys/vnode.h>
457c478bd9Sstevel@tonic-gate #include <sys/file.h>
467c478bd9Sstevel@tonic-gate #include <sys/mode.h>
477c478bd9Sstevel@tonic-gate #include <sys/proc.h>
487c478bd9Sstevel@tonic-gate #include <sys/uio.h>
497c478bd9Sstevel@tonic-gate #include <sys/filio.h>
507c478bd9Sstevel@tonic-gate #include <sys/fcntl.h>
517c478bd9Sstevel@tonic-gate #include <sys/debug.h>
527c478bd9Sstevel@tonic-gate #include <c2/audit.h>
537c478bd9Sstevel@tonic-gate 
547c478bd9Sstevel@tonic-gate /*
558fd04b83SRoger A. Faulkner  * Change ownership of file.
567c478bd9Sstevel@tonic-gate  */
577c478bd9Sstevel@tonic-gate int
fchownat(int fd,char * path,uid_t uid,gid_t gid,int flag)58*794f0adbSRoger A. Faulkner fchownat(int fd, char *path, uid_t uid, gid_t gid, int flag)
597c478bd9Sstevel@tonic-gate {
607c478bd9Sstevel@tonic-gate 	struct vattr 	vattr;
61*794f0adbSRoger A. Faulkner 	int 		error;
62bda89588Sjp 	struct zone	*zone = crgetzone(CRED());
637c478bd9Sstevel@tonic-gate 
64bda89588Sjp 	if (uid != (uid_t)-1 && !VALID_UID(uid, zone) ||
65bda89588Sjp 	    gid != (gid_t)-1 && !VALID_GID(gid, zone)) {
667c478bd9Sstevel@tonic-gate 		return (set_errno(EINVAL));
67f48205beScasper 	}
687c478bd9Sstevel@tonic-gate 	vattr.va_uid = uid;
697c478bd9Sstevel@tonic-gate 	vattr.va_gid = gid;
707c478bd9Sstevel@tonic-gate 	vattr.va_mask = 0;
717c478bd9Sstevel@tonic-gate 	if (vattr.va_uid != -1)
727c478bd9Sstevel@tonic-gate 		vattr.va_mask |= AT_UID;
737c478bd9Sstevel@tonic-gate 	if (vattr.va_gid != -1)
747c478bd9Sstevel@tonic-gate 		vattr.va_mask |= AT_GID;
757c478bd9Sstevel@tonic-gate 
76*794f0adbSRoger A. Faulkner 	error = fsetattrat(fd, path, flag, &vattr);
77*794f0adbSRoger A. Faulkner 	if (error)
787c478bd9Sstevel@tonic-gate 		return (set_errno(error));
79*794f0adbSRoger A. Faulkner 	return (0);
807c478bd9Sstevel@tonic-gate }
818fd04b83SRoger A. Faulkner 
827c478bd9Sstevel@tonic-gate int
chown(char * path,uid_t uid,gid_t gid)83*794f0adbSRoger A. Faulkner chown(char *path, uid_t uid, gid_t gid)
847c478bd9Sstevel@tonic-gate {
85*794f0adbSRoger A. Faulkner 	return (fchownat(AT_FDCWD, path, uid, gid, 0));
867c478bd9Sstevel@tonic-gate }
877c478bd9Sstevel@tonic-gate 
887c478bd9Sstevel@tonic-gate int
lchown(char * path,uid_t uid,gid_t gid)89*794f0adbSRoger A. Faulkner lchown(char *path, uid_t uid, gid_t gid)
907c478bd9Sstevel@tonic-gate {
91*794f0adbSRoger A. Faulkner 	return (fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW));
927c478bd9Sstevel@tonic-gate }
937c478bd9Sstevel@tonic-gate 
947c478bd9Sstevel@tonic-gate int
fchown(int fd,uid_t uid,uid_t gid)957c478bd9Sstevel@tonic-gate fchown(int fd, uid_t uid, uid_t gid)
967c478bd9Sstevel@tonic-gate {
978fd04b83SRoger A. Faulkner 	return (fchownat(fd, NULL, uid, gid, 0));
987c478bd9Sstevel@tonic-gate }
99