sys/arch/ia64/stand/common/devopen.c

   1 /*      $NetBSD: devopen.c,v 1.2 2006/04/22 07:58:53 cherry Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 /* __FBSDID("$FreeBSD: src/sys/boot/common/devopen.c,v 1.4 2003/08/25 23:30:41 obrien Exp $"); */
  31
  32 #include <lib/libsa/stand.h>
  33 #include <lib/libsa/loadfile.h>
  34
  35 #include "bootstrap.h"
  36
  37 int
  38 devopen(struct open_file *f, const char *fname, char **file)
  39 {
  40     struct devdesc      *dev;
  41     int                 result;
  42
  43     if ((result = archsw.arch_getdev((void *)&dev, fname, (const char **) file)) == 0) {        /* get the device */
  44         /* point to device-specific data so that device open can use it */
  45         f->f_devdata = dev;
  46         if ((result = dev->d_dev->dv_open(f, dev)) == 0) {              /* try to open it */
  47             /* reference the devsw entry from the open_file structure */
  48             f->f_dev = dev->d_dev;
  49         } else {
  50             free(dev);          /* release the device descriptor */
  51         }
  52     }
  53     return(result);
  54 }
  55
  56 int
  57 devclose(struct open_file *f)
  58 {
  59     if (f->f_devdata != NULL) {
  60         free(f->f_devdata);
  61     }
  62     return(0);
  63 }