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Diffstat (limited to 'sys/nnpfs/nnpfs_dev.h')
| -rw-r--r-- | sys/nnpfs/nnpfs_dev.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/sys/nnpfs/nnpfs_dev.h b/sys/nnpfs/nnpfs_dev.h new file mode 100644 index 00000000000..a588bf0b178 --- /dev/null +++ b/sys/nnpfs/nnpfs_dev.h @@ -0,0 +1,162 @@ +/* + * Copyright (c) 1995 - 2001 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. 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. + */ + +/* $arla: nnpfs_dev.h,v 1.19 2003/01/19 20:53:52 lha Exp $ */ + +#ifndef _nnpfs_dev_h +#define _nnpfs_dev_h + +/* + * Queues of nnpfs_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 nnpfs_link { + struct nnpfs_link *prev, *next; + struct nnpfs_message_header *message; + u_int error_or_size; /* error on sleepq and size on + * messageq */ +}; + +struct nnpfs_channel { + struct nnpfs_link messageq; /* Messages not yet read */ + struct nnpfs_link sleepq; /* Waiting for reply message */ + u_int nsequence; +#ifdef __osf__ + sel_queue_t sel_q; +#else + struct selinfo selinfo; +#endif + struct nnpfs_message_header *message_buffer; + int status; +#define CHANNEL_OPENED 0x1 +#define CHANNEL_WAITING 0x2 + d_thread_t *proc; +}; + +extern struct nnpfs_channel nnpfs_channel[NNNPFS]; + +/* + * These are variant dependent + */ + +void nnpfs_select_wakeup(struct nnpfs_channel *); + +int nnpfs_install_device(void); +int nnpfs_uninstall_device(void); + +int nnpfs_install_filesys(void); +int nnpfs_may_uninstall_filesys(void); +int nnpfs_uninstall_filesys(void); + +int nnpfs_stat_filesys(void); +int nnpfs_stat_device(void); + +/* + * And these should be generic + */ + +void +nnpfs_initq(struct nnpfs_link *q); + +int +nnpfs_emptyq(const struct nnpfs_link *q); + +int +nnpfs_onq(const struct nnpfs_link *link); + +void +nnpfs_appendq(struct nnpfs_link *q, struct nnpfs_link *p); + +void +nnpfs_outq(struct nnpfs_link *p); + +int +nnpfs_devopen_common(dev_t dev); + +#ifndef __osf__ /* XXX - we should do the same for osf */ +int nnpfs_devopen(dev_t dev, int flag, int devtype, d_thread_t *proc); +int nnpfs_devclose(dev_t dev, int flag, int devtype, d_thread_t *proc); +int nnpfs_devioctl(dev_t dev, u_long cmd, caddr_t data, int flags, + d_thread_t *p); +#ifdef HAVE_THREE_ARGUMENT_SELRECORD +int nnpfs_devselect(dev_t dev, int which, void *wql, d_thread_t *p); +#else +int nnpfs_devselect(dev_t dev, int which, d_thread_t *p); +#endif +int nnpfs_devpoll(dev_t dev, int events, d_thread_t *p); +#endif /* ! __osf__ */ + +int +nnpfs_devclose_common(dev_t dev, d_thread_t *p); + +int +nnpfs_devread(dev_t dev, struct uio * uiop, int ioflag); + +int +nnpfs_devwrite(dev_t dev, struct uio *uiop, int ioflag); + +int +nnpfs_message_send(int fd, struct nnpfs_message_header * message, u_int size); + +int +nnpfs_message_rpc(int fd, struct nnpfs_message_header * message, u_int size, + d_thread_t *p); + +int +nnpfs_message_receive(int fd, + struct nnpfs_message_header *message, + u_int size, + d_thread_t *p); + +int +nnpfs_message_wakeup(int fd, + struct nnpfs_message_wakeup *message, + u_int size, + d_thread_t *p); + +int +nnpfs_message_wakeup_data(int fd, + struct nnpfs_message_wakeup_data * message, + u_int size, + d_thread_t *p); + +int +nnpfs_uprintf_device(void); + +int +nnpfs_is_nnpfs_dev (dev_t dev); + +#endif /* _nnpfs_dev_h */ |