diff options
Diffstat (limited to 'isam/update.c')
| -rw-r--r-- | isam/update.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/isam/update.c b/isam/update.c deleted file mode 100644 index b3b676f967d..00000000000 --- a/isam/update.c +++ /dev/null @@ -1,117 +0,0 @@ -/* Copyright (C) 2000 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; either version 2 of the License, or - (at your option) any later version. - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -/* Uppdaterare nuvarande record i en pisam-databas */ - -#include "isamdef.h" -#ifdef __WIN__ -#include <errno.h> -#endif - - /* Updaterar senaste l{sta record i databasen */ - -int nisam_update(register N_INFO *info, const byte *oldrec, const byte *newrec) -{ - int flag,key_changed,save_errno; - reg3 ulong pos; - uint i,length; - uchar old_key[N_MAX_KEY_BUFF],*new_key; - DBUG_ENTER("nisam_update"); - - LINT_INIT(save_errno); - if (!(info->update & HA_STATE_AKTIV)) - { - my_errno=HA_ERR_KEY_NOT_FOUND; - DBUG_RETURN(-1); - } - if (info->s->base.options & HA_OPTION_READ_ONLY_DATA) - { - my_errno=EACCES; - DBUG_RETURN(-1); - } - pos=info->lastpos; -#ifndef NO_LOCKING - if (_nisam_readinfo(info,F_WRLCK,1)) DBUG_RETURN(-1); -#endif - if ((*info->s->compare_record)(info,oldrec)) - { - save_errno=my_errno; - goto err_end; /* Record has changed */ - } - if (info->s->state.key_file_length >= - info->s->base.max_key_file_length - - info->s->blocksize* INDEX_BLOCK_MARGIN *info->s->state.keys) - { - save_errno=HA_ERR_INDEX_FILE_FULL; - goto err_end; - } - - /* Flyttar de element i isamfilen som m}ste flyttas */ - - new_key=info->lastkey+info->s->base.max_key_length; - key_changed=HA_STATE_KEY_CHANGED; /* We changed current database */ - /* Remove key that didn't change */ - for (i=0 ; i < info->s->state.keys ; i++) - { - length=_nisam_make_key(info,i,new_key,newrec,pos); - if (length != _nisam_make_key(info,i,old_key,oldrec,pos) || - memcmp((byte*) old_key,(byte*) new_key,length)) - { - if ((int) i == info->lastinx) - key_changed|=HA_STATE_WRITTEN; /* Mark that keyfile changed */ - if (_nisam_ck_delete(info,i,old_key)) goto err; - if (_nisam_ck_write(info,i,new_key)) goto err; - } - } - - if ((*info->s->update_record)(info,pos,newrec)) - goto err; - - info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV | - key_changed); - nisam_log_record(LOG_UPDATE,info,newrec,info->lastpos,0); - VOID(_nisam_writeinfo(info,test(key_changed))); - allow_break(); /* Allow SIGHUP & SIGINT */ - DBUG_RETURN(0); - -err: - DBUG_PRINT("error",("key: %d errno: %d",i,my_errno)); - save_errno=my_errno; - if (my_errno == HA_ERR_FOUND_DUPP_KEY || my_errno == HA_ERR_RECORD_FILE_FULL) - { - info->errkey= (int) i; - flag=0; - do - { - length=_nisam_make_key(info,i,new_key,newrec,pos); - if (length != _nisam_make_key(info,i,old_key,oldrec,pos) || - memcmp((byte*) old_key,(byte*) new_key,length)) - { - if ((flag++ && _nisam_ck_delete(info,i,new_key)) || - _nisam_ck_write(info,i,old_key)) - break; - } - } while (i-- != 0); - } - info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV | - key_changed); - err_end: - nisam_log_record(LOG_UPDATE,info,newrec,info->lastpos,save_errno); - VOID(_nisam_writeinfo(info,1)); - allow_break(); /* Allow SIGHUP & SIGINT */ - my_errno=(save_errno == HA_ERR_KEY_NOT_FOUND) ? HA_ERR_CRASHED : save_errno; - DBUG_RETURN(-1); -} /* nisam_update */ |