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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 26 /* All Rights Reserved */ 27 28 /* 29 * Portions of this source code were derived from Berkeley 4.3 BSD 30 * under license from the Regents of the University of California. 31 */ 32 33 #ifndef _VM_SEG_ENUM_H 34 #define _VM_SEG_ENUM_H 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 /* 41 * These enumerations are needed in both <vm/seg.h> and 42 * <sys/vnode.h> in order to declare function prototypes. 43 */ 44 45 /* 46 * Fault information passed to the seg fault handling routine. 47 * The F_SOFTLOCK and F_SOFTUNLOCK are used by software 48 * to lock and unlock pages for physical I/O. 49 */ 50 enum fault_type { 51 F_INVAL, /* invalid page */ 52 F_PROT, /* protection fault */ 53 F_SOFTLOCK, /* software requested locking */ 54 F_SOFTUNLOCK /* software requested unlocking */ 55 }; 56 57 /* 58 * Lock information passed to the seg pagelock handling routine. 59 */ 60 enum lock_type { 61 L_PAGELOCK, /* lock pages */ 62 L_PAGEUNLOCK /* unlock pages */ 63 }; 64 65 /* 66 * seg_rw gives the access type for a fault operation 67 */ 68 enum seg_rw { 69 S_OTHER, /* unknown or not touched */ 70 S_READ, /* read access attempted */ 71 S_WRITE, /* write access attempted */ 72 S_EXEC, /* execution access attempted */ 73 S_CREATE, /* create if page doesn't exist */ 74 S_READ_NOCOW /* read access, don't do a copy on write */ 75 }; 76 77 /* 78 * Capabilities for capability segment op. 79 */ 80 typedef enum { 81 S_CAPABILITY_NOMINFLT /* supports non-faulting page renaming */ 82 } segcapability_t; 83 84 #ifdef __cplusplus 85 } 86 #endif 87 88 #endif /* _VM_SEG_ENUM_H */ 89