/* $OpenBSD: xfs_dev.h,v 1.4 2000/03/03 00:54:58 todd Exp $ */ /* * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Kungliga Tekniska * Högskolan and its contributors. * * 4. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _xfs_dev_h #define _xfs_dev_h /* * Queues of xfs_links hold outbound messages and processes sleeping * for replies. The last field is used to return error to sleepers and * to keep record of memory to be deallocated when messages have been * delivered or dropped. */ struct xfs_link { struct xfs_link *prev, *next; struct xfs_message_header *message; u_int error_or_size; /* error on sleepq and size on * messageq */ }; struct xfs_channel { struct xfs_link messageq; /* Messages not yet read */ struct xfs_link sleepq; /* Waiting for reply message */ u_int nsequence; #ifdef __osf__ sel_queue_t sel_q; #else struct selinfo selinfo; #endif struct xfs_message_header *message_buffer; int status; #define CHANNEL_OPENED 0x1 #define CHANNEL_WAITING 0x2 }; extern struct xfs_channel xfs_channel[NXFS]; /* * These are variant dependent */ int xfs_func_is_devopen(void*); void xfs_select_wakeup(struct xfs_channel *); int xfs_install_device(void); int xfs_uninstall_device(void); int xfs_install_filesys(void); int xfs_may_uninstall_filesys(void); int xfs_uninstall_filesys(void); int xfs_stat_filesys(void); int xfs_stat_device(void); /* * And these should be generic */ void xfs_initq(struct xfs_link *q); int xfs_emptyq(struct xfs_link *q); int xfs_onq(struct xfs_link *link); void xfs_appendq(struct xfs_link *q, struct xfs_link *p); void xfs_outq(struct xfs_link *p); int xfs_devopen_common(dev_t dev); #ifndef __osf__ /* XXX - we should do the same for osf */ int xfs_devopen(dev_t dev, int flag, int devtype, struct proc *proc); int xfs_devclose(dev_t dev, int flag, int devtype, struct proc *proc); int xfs_devioctl(dev_t dev, #if defined(__NetBSD__) || defined(__OpenBSD__) u_long cmd, #else /* if defined(__FreeBSD__) */ int cmd, #endif caddr_t data, int flags, struct proc *p); int xfs_devselect(dev_t dev, int which, struct proc *p); #endif /* ! __osf__ */ int xfs_devclose_common(dev_t dev, struct proc *p); int xfs_devread(dev_t dev, struct uio * uiop, int ioflag); int xfs_devwrite(dev_t dev, struct uio *uiop, int ioflag); int xfs_message_send(int fd, struct xfs_message_header * message, u_int size); int xfs_message_rpc(int fd, struct xfs_message_header * message, u_int size); int xfs_message_receive(int fd, struct xfs_message_header *message, u_int size, struct proc *p); int xfs_message_wakeup(int fd, struct xfs_message_wakeup *message, u_int size, struct proc *p); int xfs_message_wakeup_data(int fd, struct xfs_message_wakeup_data * message, u_int size, struct proc *p); int xfs_uprintf_device(void); #endif /* _xfs_dev_h */