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/*
23 * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
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#include <sys/param.h>
35#include <sys/isa_defs.h>
36#include <sys/types.h>
37#include <sys/sysmacros.h>
38#include <sys/systm.h>
39#include <sys/errno.h>
40#include <sys/fcntl.h>
41#include <sys/pathname.h>
42#include <sys/var.h>
43#include <sys/vfs.h>
44#include <sys/vnode.h>
45#include <sys/file.h>
46#include <sys/mode.h>
47#include <sys/proc.h>
48#include <sys/uio.h>
49#include <sys/filio.h>
50#include <sys/fcntl.h>
51#include <sys/debug.h>
52#include <c2/audit.h>
53
54/*
55 * Change ownership of file.
56 */
57int
58fchownat(int fd, char *path, uid_t uid, gid_t gid, int flag)
59{
60	struct vattr 	vattr;
61	int 		error;
62	struct zone	*zone = crgetzone(CRED());
63
64	if (uid != (uid_t)-1 && !VALID_UID(uid, zone) ||
65	    gid != (gid_t)-1 && !VALID_GID(gid, zone)) {
66		return (set_errno(EINVAL));
67	}
68	vattr.va_uid = uid;
69	vattr.va_gid = gid;
70	vattr.va_mask = 0;
71	if (vattr.va_uid != -1)
72		vattr.va_mask |= AT_UID;
73	if (vattr.va_gid != -1)
74		vattr.va_mask |= AT_GID;
75
76	error = fsetattrat(fd, path, flag, &vattr);
77	if (error)
78		return (set_errno(error));
79	return (0);
80}
81
82int
83chown(char *path, uid_t uid, gid_t gid)
84{
85	return (fchownat(AT_FDCWD, path, uid, gid, 0));
86}
87
88int
89lchown(char *path, uid_t uid, gid_t gid)
90{
91	return (fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW));
92}
93
94int
95fchown(int fd, uid_t uid, uid_t gid)
96{
97	return (fchownat(fd, NULL, uid, gid, 0));
98}
99