4185 add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R (fix studio build)
4185 add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Garrett D'Amore <garrett@damore.org>
Moved closed ZFS files to open repo, changed Makefiles accordingly
Removed unneeded weak symbols
re #12585 rb4049 ZFS++ work port - refactoring to improve separation of open/closed code, bug fixes, performance improvements - open code

          --- old/usr/src/uts/common/fs/zfs/sha256.c
          +++ new/usr/src/uts/common/fs/zfs/sha256.c

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *
  13   13   * When distributing Covered Code, include this CDDL HEADER in each

  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  /*
  22   22   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23   23   * Use is subject to license terms.
       24 + * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  24   25   */
  25   26  /*
  26   27   * Copyright 2013 Saso Kiselkov. All rights reserved.
  27   28   * Copyright (c) 2016 by Delphix. All rights reserved.
  28   29   */
  29   30  #include <sys/zfs_context.h>
  30   31  #include <sys/zio.h>
  31   32  #include <sys/sha2.h>
  32   33  #include <sys/abd.h>
  33   34  

  34   35  static int
  35   36  sha_incremental(void *buf, size_t size, void *arg)
  36   37  {
  37   38          SHA2_CTX *ctx = arg;
  38   39          SHA2Update(ctx, buf, size);
  39   40          return (0);
  40   41  }
  41   42  
  42   43  /*ARGSUSED*/
  43   44  void
  44   45  abd_checksum_SHA256(abd_t *abd, uint64_t size,
  45   46      const void *ctx_template, zio_cksum_t *zcp)
  46   47  {
  47   48          SHA2_CTX ctx;
  48   49          zio_cksum_t tmp;
  49   50  
  50   51          SHA2Init(SHA256, &ctx);
  51   52          (void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx);
  52   53          SHA2Final(&tmp, &ctx);
  53   54  
  54   55          /*
  55   56           * A prior implementation of this function had a
  56   57           * private SHA256 implementation always wrote things out in
  57   58           * Big Endian and there wasn't a byteswap variant of it.
  58   59           * To preserve on disk compatibility we need to force that
  59   60           * behavior.
  60   61           */
  61   62          zcp->zc_word[0] = BE_64(tmp.zc_word[0]);
  62   63          zcp->zc_word[1] = BE_64(tmp.zc_word[1]);
  63   64          zcp->zc_word[2] = BE_64(tmp.zc_word[2]);
  64   65          zcp->zc_word[3] = BE_64(tmp.zc_word[3]);
  65   66  }
  66   67  
  67   68  /*ARGSUSED*/
  68   69  void
  69   70  abd_checksum_SHA512_native(abd_t *abd, uint64_t size,
  70   71      const void *ctx_template, zio_cksum_t *zcp)
  71   72  {
  72   73          SHA2_CTX        ctx;
  73   74  
  74   75          SHA2Init(SHA512_256, &ctx);
  75   76          (void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx);
  76   77          SHA2Final(zcp, &ctx);
  77   78  }
  78   79  
  79   80  /*ARGSUSED*/
  80   81  void
  81   82  abd_checksum_SHA512_byteswap(abd_t *abd, uint64_t size,
  82   83      const void *ctx_template, zio_cksum_t *zcp)
  83   84  {
  84   85          zio_cksum_t     tmp;
  85   86  
  86   87          abd_checksum_SHA512_native(abd, size, ctx_template, &tmp);
  87   88          zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]);
  88   89          zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]);
  89   90          zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]);
  90   91          zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]);
  91   92  }

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