file.h revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
1N/A * Copyright (c) 1982, 1986, 1989, 1993 1N/A * The Regents of the University of California. All rights reserved. 1N/A * Redistribution and use in source and binary forms, with or without 1N/A * modification, are permitted provided that the following conditions 1N/A * 1. Redistributions of source code must retain the above copyright 1N/A * notice, this list of conditions and the following disclaimer. 1N/A * 2. Redistributions in binary form must reproduce the above copyright 1N/A * notice, this list of conditions and the following disclaimer in the 1N/A * documentation and/or other materials provided with the distribution. 1N/A * 3. All advertising materials mentioning features or use of this software 1N/A * must display the following acknowledgement: 1N/A * This product includes software developed by the University of 1N/A * California, Berkeley and its contributors. 1N/A * 4. Neither the name of the University nor the names of its contributors 1N/A * may be used to endorse or promote products derived from this software 1N/A * without specific prior written permission. 1N/A * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1N/A * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1N/A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1N/A * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 1N/A * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1N/A * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1N/A * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1N/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 1N/A * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 1N/A * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 1N/A * $Id: file.h,v 1.1.1.1 2006/05/30 06:12:53 hhzhou Exp $ 1N/A * Kernel descriptor table. 1N/A * One entry for each open kernel vnode and socket. short f_type;
/* descriptor type */ short f_count;
/* reference count */ short f_msgcount;
/* references from message queue */ struct ucred *
f_cred;
/* credentials associated with descriptor */ * count of sequential accesses -- cleared * by most seek operations. * offset of next expected read extern int maxfiles;
/* kernel limit on number of open files */ extern int maxfilesperproc;
/* per process limit on number of open files */ extern int nfiles;
/* actual number of open files */