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 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_WINLOCKIO_H 28 #define _SYS_WINLOCKIO_H 29 30 #include <sys/types.h> 31 #include <sys/ioccom.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 /* 38 * Structure for allocating lock contexts. 39 * The page number portion of sy_ident is the offset for mmap(2). 40 * The page offset portion of sy_ident is the byte-offset relative to 41 * the start of the page returned by mmap(2) and should added to it. 42 */ 43 44 struct winlockalloc { 45 uint_t sy_key; /* user-provided key, if any */ 46 uint_t sy_ident; /* system-provided identification */ 47 }; 48 49 /* 50 * Structure for getting and setting lock timeouts or NOTIMEOUT flag 51 */ 52 53 struct winlocktimeout { 54 uint_t sy_ident; /* system-provided identification */ 55 uint_t sy_timeout; /* timeout value in seconds */ 56 int sy_flags; /* Flags for lock context - see defs below */ 57 }; 58 59 #define WIOC ('L'<<8) 60 61 62 #define WINLOCKALLOC (WIOC|0) 63 #define WINLOCKFREE (WIOC|1) 64 #define WINLOCKSETTIMEOUT (WIOC|2) 65 #define WINLOCKGETTIMEOUT (WIOC|3) 66 #define WINLOCKDUMP (WIOC|4) 67 68 #ifndef GRABPAGEALLOC 69 #include <sys/fbio.h> /* defines GRAB* ioctls */ 70 #endif 71 72 /* flag bits */ 73 #define SY_NOTIMEOUT 0x1 /* This client never times out */ 74 75 #ifdef _KERNEL 76 77 #define UFLAGS 0x00ff /* flags usable by users */ 78 #define KFLAGS 0xff00 /* flags used by driver implementation */ 79 #define TRASHPAGE 0x0400 /* process has unlock mapping to trashpage */ 80 81 #endif /* _KERNEL */ 82 83 #ifdef __cplusplus 84 } 85 #endif 86 87 #endif /* _SYS_WINLOCKIO_H */ 88