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      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, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     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 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     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 #ifndef	_VM_SEG_ENUM_H
     35 #define	_VM_SEG_ENUM_H
     36 
     37 #pragma ident	"@(#)seg_enum.h	1.11	05/10/07 SMI"
     38 
     39 #ifdef	__cplusplus
     40 extern "C" {
     41 #endif
     42 
     43 /*
     44  * These enumerations are needed in both <vm/seg.h> and
     45  * <sys/vnode.h> in order to declare function prototypes.
     46  */
     47 
     48 /*
     49  * Fault information passed to the seg fault handling routine.
     50  * The F_SOFTLOCK and F_SOFTUNLOCK are used by software
     51  * to lock and unlock pages for physical I/O.
     52  */
     53 enum fault_type {
     54 	F_INVAL,		/* invalid page */
     55 	F_PROT,			/* protection fault */
     56 	F_SOFTLOCK,		/* software requested locking */
     57 	F_SOFTUNLOCK		/* software requested unlocking */
     58 };
     59 
     60 /*
     61  * Lock information passed to the seg pagelock handling routine.
     62  */
     63 enum lock_type {
     64 	L_PAGELOCK,		/* lock pages */
     65 	L_PAGEUNLOCK,		/* unlock pages */
     66 	L_PAGERECLAIM		/* reclaim pages */
     67 };
     68 
     69 /*
     70  * seg_rw gives the access type for a fault operation
     71  */
     72 enum seg_rw {
     73 	S_OTHER,		/* unknown or not touched */
     74 	S_READ,			/* read access attempted */
     75 	S_WRITE,		/* write access attempted */
     76 	S_EXEC,			/* execution access attempted */
     77 	S_CREATE,		/* create if page doesn't exist */
     78 	S_READ_NOCOW		/* read access, don't do a copy on write */
     79 };
     80 
     81 /*
     82  * Capabilities for capability segment op.
     83  */
     84 typedef enum {
     85 	S_CAPABILITY_NOMINFLT	/* supports non-faulting page renaming */
     86 } segcapability_t;
     87 
     88 #ifdef	__cplusplus
     89 }
     90 #endif
     91 
     92 #endif	/* _VM_SEG_ENUM_H */
     93