1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS__DOMAINSET_H_ 30 #define _SYS__DOMAINSET_H_ 31 32 #include <sys/_bitset.h> 33 34 #ifdef _KERNEL 35 #include <machine/param.h> 36 37 #define DOMAINSET_SETSIZE MAXMEMDOM 38 #endif 39 40 #define DOMAINSET_MAXSIZE 256 41 42 #ifndef DOMAINSET_SETSIZE 43 #define DOMAINSET_SETSIZE DOMAINSET_MAXSIZE 44 #endif 45 46 __BITSET_DEFINE(_domainset, DOMAINSET_SETSIZE); 47 typedef struct _domainset domainset_t; 48 49 /* 50 * This structure is intended to be embedded in objects which have policy 51 * attributes. Each object keeps its own iterator so round-robin is 52 * synchronized and accurate. 53 */ 54 struct domainset; 55 struct domainset_ref { 56 struct domainset * volatile dr_policy; 57 unsigned int dr_iter; 58 }; 59 60 #endif /* !_SYS__DOMAINSET_H_ */ 61