winlockio.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_WINLOCKIO_H
#define _SYS_WINLOCKIO_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/ioccom.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Structure for allocating lock contexts.
* The page number portion of sy_ident is the offset for mmap(2).
* The page offset portion of sy_ident is the byte-offset relative to
* the start of the page returned by mmap(2) and should added to it.
*/
struct winlockalloc {
uint_t sy_key; /* user-provided key, if any */
uint_t sy_ident; /* system-provided identification */
};
/*
* Structure for getting and setting lock timeouts or NOTIMEOUT flag
*/
struct winlocktimeout {
uint_t sy_ident; /* system-provided identification */
uint_t sy_timeout; /* timeout value in seconds */
int sy_flags; /* Flags for lock context - see defs below */
};
#define WIOC ('L'<<8)
#define WINLOCKALLOC (WIOC|0)
#define WINLOCKFREE (WIOC|1)
#define WINLOCKSETTIMEOUT (WIOC|2)
#define WINLOCKGETTIMEOUT (WIOC|3)
#define WINLOCKDUMP (WIOC|4)
#ifndef GRABPAGEALLOC
#include <sys/fbio.h> /* defines GRAB* ioctls */
#endif
/* flag bits */
#define SY_NOTIMEOUT 0x1 /* This client never times out */
#ifdef _KERNEL
#define UFLAGS 0x00ff /* flags usable by users */
#define KFLAGS 0xff00 /* flags used by driver implementation */
#define TRASHPAGE 0x0400 /* process has unlock mapping to trashpage */
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_WINLOCKIO_H */