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 */
57 int
fchownat(int fd,char * path,uid_t uid,gid_t gid,int flag)58 fchownat(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
82 int
chown(char * path,uid_t uid,gid_t gid)83 chown(char *path, uid_t uid, gid_t gid)
84 {
85 return (fchownat(AT_FDCWD, path, uid, gid, 0));
86 }
87
88 int
lchown(char * path,uid_t uid,gid_t gid)89 lchown(char *path, uid_t uid, gid_t gid)
90 {
91 return (fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW));
92 }
93
94 int
fchown(int fd,uid_t uid,uid_t gid)95 fchown(int fd, uid_t uid, uid_t gid)
96 {
97 return (fchownat(fd, NULL, uid, gid, 0));
98 }
99