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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Copyright (c) 2000-2002, 2005-2007 MySQL AB
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Use is subject to license terms
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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/*
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Lock databases against read or write.
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*/
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#include "myrg_def.h"
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int myrg_lock_database(MYRG_INFO *info, int lock_type)
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{
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int error,new_error;
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MYRG_TABLE *file;
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error=0;
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for (file=info->open_tables ; file != info->end_table ; file++)
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{
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DBUG_ASSERT(file->table->open_flag & HA_OPEN_MERGE_TABLE);
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if ((new_error=mi_lock_database(file->table,lock_type)))
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{
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error=new_error;
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if (lock_type != F_UNLCK)
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{
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while (--file >= info->open_tables)
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mi_lock_database(file->table, F_UNLCK);
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break;
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}
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}
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}
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return(error);
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}
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