xref: /freebsd/sys/contrib/openzfs/lib/libspl/include/zone.h (revision 61145dc2b94f12f6a47344fb9aac702321880e43)
1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3  * CDDL HEADER START
4  *
5  * The contents of this file are subject to the terms of the
6  * Common Development and Distribution License (the "License").
7  * You may not use this file except in compliance with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or https://opensource.org/licenses/CDDL-1.0.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _LIBSPL_ZONE_H
28 #define	_LIBSPL_ZONE_H
29 
30 #include <sys/types.h>
31 #include <sys/zone.h>
32 
33 #ifdef	__cplusplus
34 extern "C" {
35 #endif
36 
37 #ifdef __FreeBSD__
38 #define	GLOBAL_ZONEID	0
39 #else
40 /*
41  * Hardcoded in the kernel's root user namespace.  A "better" way to get
42  * this would be by using ioctl_ns(2), but this would need to be performed
43  * recursively on NS_GET_PARENT and then NS_GET_USERNS.  Also, that's only
44  * supported since Linux 4.9.
45  */
46 #define	GLOBAL_ZONEID	4026531837U
47 #endif
48 
49 extern zoneid_t		getzoneid(void);
50 
51 #ifdef	__cplusplus
52 }
53 #endif
54 
55 #endif /* _LIBSPL_ZONE_H */
56