xref: /freebsd/sys/contrib/openzfs/lib/libspl/include/zone.h (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583)
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 https://opensource.org/licenses/CDDL-1.0.
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  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef _LIBSPL_ZONE_H
27 #define	_LIBSPL_ZONE_H
28 
29 #include <sys/types.h>
30 #include <sys/zone.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 #ifdef __FreeBSD__
37 #define	GLOBAL_ZONEID	0
38 #else
39 /*
40  * Hardcoded in the kernel's root user namespace.  A "better" way to get
41  * this would be by using ioctl_ns(2), but this would need to be performed
42  * recursively on NS_GET_PARENT and then NS_GET_USERNS.  Also, that's only
43  * supported since Linux 4.9.
44  */
45 #define	GLOBAL_ZONEID	4026531837U
46 #endif
47 
48 extern zoneid_t		getzoneid(void);
49 
50 #ifdef	__cplusplus
51 }
52 #endif
53 
54 #endif /* _LIBSPL_ZONE_H */
55