132 lines
4.6 KiB
C++
132 lines
4.6 KiB
C++
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* Return useful base information for an open table */
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#include <fcntl.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "storage/myisam/myisamdef.h"
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#ifdef _WIN32
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#include <sys/stat.h>
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#endif
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/* Get position to last record */
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my_off_t mi_position(MI_INFO *info) { return info->lastpos; }
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/* Get information about the table */
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/* if flag == 2 one get current info (no sync from database */
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int mi_status(MI_INFO *info, MI_ISAMINFO *x, uint flag) {
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MY_STAT state;
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MYISAM_SHARE *share = info->s;
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DBUG_TRACE;
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x->recpos = info->lastpos;
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if (flag == HA_STATUS_POS) return 0; /* Compatible with ISAM */
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if (!(flag & HA_STATUS_NO_LOCK)) {
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mysql_mutex_lock(&share->intern_lock);
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(void)_mi_readinfo(info, F_RDLCK, 0);
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fast_mi_writeinfo(info);
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mysql_mutex_unlock(&share->intern_lock);
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}
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if (flag & HA_STATUS_VARIABLE) {
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x->records = info->state->records;
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x->deleted = info->state->del;
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x->delete_length = info->state->empty;
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x->data_file_length = info->state->data_file_length;
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x->index_file_length = info->state->key_file_length;
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x->keys = share->state.header.keys;
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x->check_time = share->state.check_time;
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x->mean_reclength =
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x->records
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? (ulong)((x->data_file_length - x->delete_length) / x->records)
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: (ulong)share->min_pack_length;
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}
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if (flag & HA_STATUS_ERRKEY) {
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x->errkey = info->errkey;
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x->dupp_key_pos = info->dupp_key_pos;
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}
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if (flag & HA_STATUS_CONST) {
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x->reclength = share->base.reclength;
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x->max_data_file_length = share->base.max_data_file_length;
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x->max_index_file_length = info->s->base.max_key_file_length;
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x->filenr = info->dfile;
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x->options = share->options;
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x->create_time = share->state.create_time;
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x->reflength = mi_get_pointer_length(share->base.max_data_file_length,
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myisam_data_pointer_size);
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x->record_offset =
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((share->options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD))
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? 0L
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: share->base.pack_reclength);
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x->sortkey = -1; /* No clustering */
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x->rec_per_key = share->state.rec_per_key_part;
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x->key_map = share->state.key_map;
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x->data_file_name = share->data_file_name;
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x->index_file_name = share->index_file_name;
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}
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if ((flag & HA_STATUS_TIME) && !mysql_file_fstat(info->dfile, &state))
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x->update_time = state.st_mtime;
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else
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x->update_time = 0;
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if (flag & HA_STATUS_AUTO) {
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x->auto_increment = share->state.auto_increment + 1;
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if (!x->auto_increment) /* This shouldn't happen */
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x->auto_increment = ~(ulonglong)0;
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}
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return 0;
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}
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/*
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Write a message to the error log.
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SYNOPSIS
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mi_report_error()
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file_name Name of table file (e.g. index_file_name).
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errcode Error number.
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DESCRIPTION
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This function supplies my_error() with a table name. Most error
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messages need one. Since string arguments in error messages are limited
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to 64 characters by convention, we ensure that in case of truncation,
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that the end of the index file path is in the message. This contains
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the most valuable information (the table name and the database name).
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RETURN
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void
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*/
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void mi_report_error(int errcode, const char *file_name) {
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size_t lgt;
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DBUG_TRACE;
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DBUG_PRINT("enter", ("errcode %d, table '%s'", errcode, file_name));
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if ((lgt = strlen(file_name)) > 64) file_name += lgt - 64;
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my_error(errcode, MYF(ME_ERRORLOG), file_name);
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}
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