Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 253 insertions, 0 deletions

diff --git a/storage/maria/ma_update.c b/storage/maria/ma_update.c
new file mode 100644
index 00000000..60ab4452
--- /dev/null
+++ b/storage/maria/ma_update.c
@@ -0,0 +1,253 @@
+/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+#include "ma_fulltext.h"
+#include "ma_rt_index.h"
+#include "trnman.h"
+
+/**
+   Update an old row in a MARIA table
+*/
+
+int maria_update(register MARIA_HA *info, const uchar *oldrec,
+                 const uchar *newrec)
+{
+  int flag,key_changed,save_errno;
+  reg3 my_off_t pos;
+  uint i;
+  uchar old_key_buff[MARIA_MAX_KEY_BUFF], *UNINIT_VAR(new_key_buff);
+  my_bool auto_key_changed= 0;
+  ulonglong UNINIT_VAR(changed);
+  MARIA_SHARE *share= info->s;
+  MARIA_KEYDEF *keyinfo;
+  DBUG_ENTER("maria_update");
+
+  DBUG_EXECUTE_IF("maria_pretend_crashed_table_on_usage",
+                  _ma_print_error(info, HA_ERR_CRASHED, 0);
+                  DBUG_RETURN(my_errno= HA_ERR_CRASHED););
+  if (!(info->update & HA_STATE_AKTIV))
+  {
+    DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND);
+  }
+  if (share->options & HA_OPTION_READ_ONLY_DATA)
+  {
+    DBUG_RETURN(my_errno=EACCES);
+  }
+  if (share->state.state.key_file_length >= share->base.margin_key_file_length)
+  {
+    DBUG_RETURN(my_errno=HA_ERR_INDEX_FILE_FULL);
+  }
+  pos= info->cur_row.lastpos;
+  if (_ma_readinfo(info,F_WRLCK,1))
+    DBUG_RETURN(my_errno);
+
+  if ((*share->compare_record)(info,oldrec))
+  {
+    save_errno= my_errno;
+    DBUG_PRINT("warning", ("Got error from compare record"));
+    goto err_end;			/* Record has changed */
+  }
+
+  /* Calculate and check all unique constraints */
+  key_changed=0;
+  for (i=0 ; i < share->state.header.uniques ; i++)
+  {
+    MARIA_UNIQUEDEF *def=share->uniqueinfo+i;
+    if (_ma_unique_comp(def, newrec, oldrec,1) &&
+	_ma_check_unique(info, def, newrec, _ma_unique_hash(def, newrec),
+                         pos))
+    {
+      save_errno=my_errno;
+      goto err_end;
+    }
+  }
+
+  if (_ma_mark_file_changed(share))
+  {
+    save_errno=my_errno;
+    goto err_end;
+  }
+
+  /* Ensure we don't try to restore auto_increment if it doesn't change */
+  info->last_auto_increment= ~(ulonglong) 0;
+
+  /* Check which keys changed from the original row */
+
+  new_key_buff= info->lastkey_buff2;
+  changed=0;
+  for (i=0, keyinfo= share->keyinfo ; i < share->base.keys ; i++, keyinfo++)
+  {
+    if (maria_is_key_active(share->state.key_map, i))
+    {
+      if (keyinfo->flag & HA_FULLTEXT )
+      {
+	if (_ma_ft_cmp(info,i,oldrec, newrec))
+	{
+	  if ((int) i == info->lastinx)
+	  {
+	  /*
+	    We are changeing the index we are reading on.  Mark that
+	    the index data has changed and we need to do a full search
+	    when doing read-next
+	  */
+	    key_changed|=HA_STATE_WRITTEN;
+	  }
+	  changed|=((ulonglong) 1 << i);
+	  if (_ma_ft_update(info,i,old_key_buff,oldrec,newrec,pos))
+	    goto err;
+	}
+      }
+      else
+      {
+        MARIA_KEY new_key, old_key;
+
+        (*keyinfo->make_key)(info,&new_key, i, new_key_buff, newrec,
+                             pos, info->trn->trid);
+        (*keyinfo->make_key)(info,&old_key, i, old_key_buff,
+                             oldrec, pos, info->cur_row.trid);
+
+        /* The above changed info->lastkey2. Inform maria_rnext_same(). */
+        info->update&= ~HA_STATE_RNEXT_SAME;
+
+	if (new_key.data_length != old_key.data_length ||
+	    memcmp(old_key.data, new_key.data, new_key.data_length))
+	{
+	  if ((int) i == info->lastinx)
+	    key_changed|=HA_STATE_WRITTEN;	/* Mark that keyfile changed */
+	  changed|=((ulonglong) 1 << i);
+	  keyinfo->version++;
+	  if (keyinfo->ck_delete(info,&old_key))
+            goto err;
+	  if (keyinfo->ck_insert(info,&new_key))
+            goto err;
+	  if (share->base.auto_key == i+1)
+	    auto_key_changed=1;
+	}
+      }
+    }
+  }
+
+  if (share->calc_checksum)
+  {
+    /*
+      We can't use the row based checksum as this doesn't have enough
+      precision (one byte, while the table's is more bytes).
+      At least _ma_check_unique() modifies the 'newrec' record, so checksum
+      has to be computed _after_ it. Nobody apparently modifies 'oldrec'.
+      We need to pass the old row's checksum down to (*update_record)(), we do
+      this via info->new_row.checksum (not intuitive but existing code
+      mandated that cur_row is the new row).
+      If (*update_record)() fails, table will be marked corrupted so no need
+      to revert the live checksum change.
+    */
+    info->cur_row.checksum= (*share->calc_checksum)(info, newrec);
+    info->new_row.checksum= (*share->calc_checksum)(info, oldrec);
+    info->state->checksum+= info->cur_row.checksum - info->new_row.checksum;
+  }
+
+  if ((*share->update_record)(info, pos, oldrec, newrec))
+    goto err;
+
+  if (auto_key_changed & !share->now_transactional)
+  {
+    const HA_KEYSEG *keyseg= share->keyinfo[share->base.auto_key-1].seg;
+    const uchar *key= newrec + keyseg->start;
+    set_if_bigger(share->state.auto_increment,
+                  ma_retrieve_auto_increment(key, keyseg->type));
+  }
+
+  /*
+    We can't yet have HA_STATE_AKTIV here, as block_record dosn't support it
+  */
+  info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | key_changed);
+  info->row_changes++;
+  share->state.changed|= STATE_NOT_MOVABLE | STATE_NOT_ZEROFILLED;
+  info->state->changed= 1;
+
+  /*
+    Every Maria function that updates Maria table must end with
+    call to _ma_writeinfo(). If operation (second param of
+    _ma_writeinfo()) is not 0 it sets share->changed to 1, that is
+    flags that data has changed. If operation is 0, this function
+    equals to no-op in this case.
+
+    ma_update() must always pass !0 value as operation, since even if
+    there is no index change there could be data change.
+  */
+  _ma_writeinfo(info, WRITEINFO_UPDATE_KEYFILE);
+  if (info->invalidator != 0)
+  {
+    DBUG_PRINT("info", ("invalidator... '%s' (update)",
+                        share->open_file_name.str));
+    (*info->invalidator)(share->open_file_name.str);
+    info->invalidator=0;
+  }
+  DBUG_RETURN(0);
+
+err:
+  DBUG_PRINT("error",("key: %d  errno: %d",i,my_errno));
+  save_errno= my_errno;
+  DBUG_ASSERT(save_errno);
+  if (!save_errno)
+    save_errno= HA_ERR_INTERNAL_ERROR;          /* Should never happen */
+
+  if (my_errno == HA_ERR_FOUND_DUPP_KEY || my_errno == HA_ERR_OUT_OF_MEM ||
+      my_errno == HA_ERR_RECORD_FILE_FULL)
+  {
+    info->errkey= (int) i;
+    flag=0;
+    do
+    {
+      if (((ulonglong) 1 << i) & changed)
+      {
+	if (share->keyinfo[i].flag & HA_FULLTEXT)
+	{
+	  if ((flag++ && _ma_ft_del(info,i,new_key_buff,newrec,pos)) ||
+	      _ma_ft_add(info,i,old_key_buff,oldrec,pos))
+          {
+            _ma_set_fatal_error(info, my_errno);
+	    break;
+          }
+	}
+	else
+	{
+          MARIA_KEY new_key, old_key;
+          (*share->keyinfo[i].make_key)(info, &new_key, i, new_key_buff,
+                                        newrec, pos,
+                                        info->trn->trid);
+          (*share->keyinfo[i].make_key)(info, &old_key, i, old_key_buff,
+                                        oldrec, pos, info->cur_row.trid);
+	  if ((flag++ && _ma_ck_delete(info, &new_key)) ||
+	      _ma_ck_write(info, &old_key))
+          {
+            _ma_set_fatal_error(info, my_errno);
+	    break;
+          }
+	}
+      }
+    } while (i-- != 0);
+  }
+  else
+    _ma_set_fatal_error(info, save_errno);
+
+  info->update= (HA_STATE_CHANGED | HA_STATE_AKTIV | HA_STATE_ROW_CHANGED |
+		 key_changed);
+
+ err_end:
+  _ma_writeinfo(info, WRITEINFO_UPDATE_KEYFILE);
+  if (save_errno == HA_ERR_KEY_NOT_FOUND)
+    _ma_set_fatal_error(info, HA_ERR_CRASHED);
+  DBUG_RETURN(my_errno=save_errno);
+} /* maria_update */