1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
  24  * Copyright (c) 2013, Joyent, Inc.  All rights reserved.
  25  * Copyright 2017 RackTop Systems.
  26  */
  27 
  28 #include <sys/debug.h>
  29 #include <sys/buf.h>
  30 #include <sys/errno.h>
  31 
  32 #include <strings.h>
  33 
  34 void
  35 bioinit(buf_t *bp)
  36 {
  37         bzero(bp, sizeof (buf_t));
  38 }
  39 
  40 void
  41 biodone(buf_t *bp)
  42 {
  43         if (bp->b_iodone != NULL) {
  44                 (*(bp->b_iodone))(bp);
  45                 return;
  46         }
  47         ASSERT((bp->b_flags & B_DONE) == 0);
  48         bp->b_flags |= B_DONE;
  49 }
  50 
  51 void
  52 bioerror(buf_t *bp, int error)
  53 {
  54         ASSERT(bp != NULL);
  55         ASSERT(error >= 0);
  56 
  57         if (error != 0) {
  58                 bp->b_flags |= B_ERROR;
  59         } else {
  60                 bp->b_flags &= ~B_ERROR;
  61         }
  62         bp->b_error = error;
  63 }
  64 
  65 
  66 int
  67 geterror(struct buf *bp)
  68 {
  69         int error = 0;
  70 
  71         if (bp->b_flags & B_ERROR) {
  72                 error = bp->b_error;
  73                 if (!error)
  74                         error = EIO;
  75         }
  76         return (error);
  77 }