/*- * Copyright (c) 1998 Michael Smith * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $Id: devopen.c,v 1.1.1.1 1998/08/21 03:17:41 msmith Exp $ */ #include #include #include "bootstrap.h" int devopen(struct open_file *f, const char *fname, const char **file) { struct devdesc *dev; int result; if ((result = archsw.arch_getdev((void *)&dev, fname, file)) == 0) { /* get the device */ /* point to device-specific data so that device open can use it */ f->f_devdata = dev; if ((result = dev->d_dev->dv_open(f, dev)) == 0) { /* try to open it */ /* reference the devsw entry from the open_file structure */ f->f_dev = dev->d_dev; } else { free(dev); /* release the device descriptor */ } } return(result); } int devclose(struct open_file *f) { if (f->f_devdata != NULL) { free(f->f_devdata); } return(0); }