sys/gnu/fs/reiserfs/reiserfs_item_ops.c

   1 /*-
   2  * Copyright 2000 Hans Reiser
   3  * See README for licensing and copyright details
   4  *
   5  * Ported to FreeBSD by Jean-Sébastien Pédron <jspedron@club-internet.fr>
   6  *
   7  * $FreeBSD$
   8  */
   9
  10 #include <gnu/fs/reiserfs/reiserfs_fs.h>
  11
  12 /* -------------------------------------------------------------------
  13  * Stat data functions
  14  * -------------------------------------------------------------------*/
  15
  16 static int
  17 sd_bytes_number(struct item_head *ih, int block_size)
  18 {
  19
  20         return (0);
  21 }
  22
  23 struct item_operations stat_data_ops = {
  24         .bytes_number      = sd_bytes_number,
  25         //.decrement_key     = sd_decrement_key,
  26         //.is_left_mergeable = sd_is_left_mergeable,
  27         //.print_item        = sd_print_item,
  28         //.check_item        = sd_check_item,
  29
  30         //.create_vi         = sd_create_vi,
  31         //.check_left        = sd_check_left,
  32         //.check_right       = sd_check_right,
  33         //.part_size         = sd_part_size,
  34         //.unit_num          = sd_unit_num,
  35         //.print_vi          = sd_print_vi
  36 };
  37
  38 /* -------------------------------------------------------------------
  39  * Direct item functions
  40  * -------------------------------------------------------------------*/
  41
  42 static int
  43 direct_bytes_number(struct item_head *ih, int block_size)
  44 {
  45
  46         return (ih_item_len(ih));
  47 }
  48
  49 struct item_operations direct_ops = {
  50         .bytes_number      = direct_bytes_number,
  51         //.decrement_key     = direct_decrement_key,
  52         //.is_left_mergeable = direct_is_left_mergeable,
  53         //.print_item        = direct_print_item,
  54         //.check_item        = direct_check_item,
  55
  56         //.create_vi         = direct_create_vi,
  57         //.check_left        = direct_check_left,
  58         //.check_right       = direct_check_right,
  59         //.part_size         = direct_part_size,
  60         //.unit_num          = direct_unit_num,
  61         //.print_vi          = direct_print_vi
  62 };
  63
  64 /* -------------------------------------------------------------------
  65  * Indirect item functions
  66  * -------------------------------------------------------------------*/
  67
  68 static int
  69 indirect_bytes_number(struct item_head *ih, int block_size)
  70 {
  71
  72         return (ih_item_len(ih) / UNFM_P_SIZE * block_size);
  73 }
  74
  75 struct item_operations indirect_ops = {
  76         .bytes_number      = indirect_bytes_number,
  77         //.decrement_key     = indirect_decrement_key,
  78         //.is_left_mergeable = indirect_is_left_mergeable,
  79         //.print_item        = indirect_print_item,
  80         //.check_item        = indirect_check_item,
  81
  82         //.create_vi         = indirect_create_vi,
  83         //.check_left        = indirect_check_left,
  84         //.check_right       = indirect_check_right,
  85         //.part_size         = indirect_part_size,
  86         //.unit_num          = indirect_unit_num,
  87         //.print_vi          = indirect_print_vi
  88 };
  89
  90 /* -------------------------------------------------------------------
  91  * Direntry functions
  92  * -------------------------------------------------------------------*/
  93
  94 static int
  95 direntry_bytes_number(struct item_head *ih, int block_size)
  96 {
  97
  98         reiserfs_log(LOG_WARNING, "bytes number is asked for direntry\n");
  99         return (0);
 100 }
 101
 102 struct item_operations direntry_ops = {
 103         .bytes_number      = direntry_bytes_number,
 104         //.decrement_key     = direntry_decrement_key,
 105         //.is_left_mergeable = direntry_is_left_mergeable,
 106         //.print_item        = direntry_print_item,
 107         //.check_item        = direntry_check_item,
 108
 109         //.create_vi         = direntry_create_vi,
 110         //.check_left        = direntry_check_left,
 111         //.check_right       = direntry_check_right,
 112         //.part_size         = direntry_part_size,
 113         //.unit_num          = direntry_unit_num,
 114         //.print_vi          = direntry_print_vi
 115 };
 116
 117 /* -------------------------------------------------------------------
 118  * Error catching functions to catch errors caused by incorrect item
 119  * types.
 120  * -------------------------------------------------------------------*/
 121
 122 static int
 123 errcatch_bytes_number(struct item_head *ih, int block_size)
 124 {
 125
 126         reiserfs_log(LOG_WARNING, "invalid item type observed, run fsck ASAP");
 127         return (0);
 128 }
 129
 130 struct item_operations errcatch_ops = {
 131         errcatch_bytes_number,
 132         //errcatch_decrement_key,
 133         //errcatch_is_left_mergeable,
 134         //errcatch_print_item,
 135         //errcatch_check_item,
 136
 137         //errcatch_create_vi,
 138         //errcatch_check_left,
 139         //errcatch_check_right,
 140         //errcatch_part_size,
 141         //errcatch_unit_num,
 142         //errcatch_print_vi
 143 };
 144
 145 #if !(TYPE_STAT_DATA == 0 && TYPE_INDIRECT == 1 &&                      \
 146     TYPE_DIRECT == 2 && TYPE_DIRENTRY == 3)
 147 #error
 148 #endif
 149
 150 struct item_operations *item_ops[TYPE_ANY + 1] = {
 151         &stat_data_ops,
 152         &indirect_ops,
 153         &direct_ops,
 154         &direntry_ops,
 155         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 156         &errcatch_ops /* This is to catch errors with invalid type (15th
 157                          entry for TYPE_ANY) */
 158 };