/* $NetBSD: open.c,v 1.1 1995/02/13 23:08:40 cgd Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * The Mach Operating System project at Carnegie-Mellon University. * * 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 University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)open.c 8.1 (Berkeley) 6/11/93 * * * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University * All Rights Reserved. * * Author: Alessandro Forin * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #if 0 #include "stand.h" #endif #include "../disk.c" #include "devopen.c" struct open_file files[SOPEN_MAX]; /* * File primitives proper */ static inline int open(fname, mode) const char *fname; int mode; { register struct open_file *f; register int fd, i, error; char *file; /* find a free file descriptor */ for (fd = 0, f = files; fd < SOPEN_MAX; fd++, f++) if (f->f_flags == 0) goto fnd; return (-1); fnd: /* * Try to open the device. * Convert open mode (0,1,2) to F_READ, F_WRITE. */ f->f_flags = /* 0 + */ 1; file = (char *)0; error = devopen(f, fname, &file); /*puts("just devopened\n");*/ if (error) goto err; /* see if we opened a raw device; otherwise, 'file' is the file name. */ if (file == (char *)0) { f->f_flags |= F_RAW; /*puts("was raw, return");*/ return (0); } /* pass file name to the different filesystem open routines */ /*puts("going to ufs_open: ");*/ /*puts(file);*/ /*puts("\n");*/ error = ufs_open(file, f); if (error == 0) return (fd); err: f->f_flags = 0; return (-1); }