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8e7939167d
e.g.MYSQL_AUDIT_GENERAL_ERROR General audit API (MYSQL_AUDIT_GENERAL_CLASS) didn't expose event subclass to plugins. This patch exposes event subclass to plugins via struct mysql_event_general::event_subclass. This change is not compatible with existing general audit plugins. Audit interface major version has been incremented. include/mysql/plugin_audit.h: Expose event subclass to audit general plugins. plugin/audit_null/audit_null.c: Added distinct counters for general event sub-classes. Removed printf() from deinit(). One can easily see number of calls via status variables. To make code nicer, modified class mask to use macro instead of hardcoded number. Incremented audit plugin minor version. sql/sql_audit.cc: Expose event subclass to audit general plugins.
159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/* Copyright (C) 2006-2007 MySQL AB
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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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <stdio.h>
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#include <mysql/plugin.h>
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#include <mysql/plugin_audit.h>
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#if !defined(__attribute__) && (defined(__cplusplus) || !defined(__GNUC__) || __GNUC__ == 2 && __GNUC_MINOR__ < 8)
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#define __attribute__(A)
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#endif
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static volatile int number_of_calls; /* for SHOW STATUS, see below */
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static volatile int number_of_calls_general_log;
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static volatile int number_of_calls_general_error;
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static volatile int number_of_calls_general_result;
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/*
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Initialize the plugin at server start or plugin installation.
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SYNOPSIS
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audit_null_plugin_init()
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DESCRIPTION
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Does nothing.
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RETURN VALUE
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0 success
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1 failure (cannot happen)
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*/
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static int audit_null_plugin_init(void *arg __attribute__((unused)))
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{
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number_of_calls= 0;
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number_of_calls_general_log= 0;
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number_of_calls_general_error= 0;
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number_of_calls_general_result= 0;
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return(0);
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}
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/*
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Terminate the plugin at server shutdown or plugin deinstallation.
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SYNOPSIS
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audit_null_plugin_deinit()
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Does nothing.
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RETURN VALUE
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0 success
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1 failure (cannot happen)
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*/
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static int audit_null_plugin_deinit(void *arg __attribute__((unused)))
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{
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return(0);
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}
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/*
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Foo
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SYNOPSIS
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audit_null_notify()
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thd connection context
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DESCRIPTION
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*/
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static void audit_null_notify(MYSQL_THD thd __attribute__((unused)),
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const struct mysql_event *event)
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{
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/* prone to races, oh well */
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number_of_calls++;
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if (event->event_class == MYSQL_AUDIT_GENERAL_CLASS)
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{
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const struct mysql_event_general *event_general=
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(const struct mysql_event_general *) event;
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switch (event_general->event_subclass)
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{
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case MYSQL_AUDIT_GENERAL_LOG:
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number_of_calls_general_log++;
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break;
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case MYSQL_AUDIT_GENERAL_ERROR:
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number_of_calls_general_error++;
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break;
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case MYSQL_AUDIT_GENERAL_RESULT:
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number_of_calls_general_result++;
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break;
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default:
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break;
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}
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}
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}
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/*
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Plugin type-specific descriptor
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*/
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static struct st_mysql_audit audit_null_descriptor=
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{
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MYSQL_AUDIT_INTERFACE_VERSION, /* interface version */
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NULL, /* release_thd function */
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audit_null_notify, /* notify function */
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{ (unsigned long) MYSQL_AUDIT_GENERAL_CLASSMASK } /* class mask */
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};
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/*
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Plugin status variables for SHOW STATUS
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*/
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static struct st_mysql_show_var simple_status[]=
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{
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{ "Audit_null_called", (char *) &number_of_calls, SHOW_INT },
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{ "Audit_null_general_log", (char *) &number_of_calls_general_log, SHOW_INT },
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{ "Audit_null_general_error", (char *) &number_of_calls_general_error,
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SHOW_INT },
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{ "Audit_null_general_result", (char *) &number_of_calls_general_result,
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SHOW_INT },
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{ 0, 0, 0}
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};
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/*
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Plugin library descriptor
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*/
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mysql_declare_plugin(audit_null)
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{
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MYSQL_AUDIT_PLUGIN, /* type */
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&audit_null_descriptor, /* descriptor */
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"NULL_AUDIT", /* name */
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"MySQL AB", /* author */
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"Simple NULL Audit", /* description */
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PLUGIN_LICENSE_GPL,
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audit_null_plugin_init, /* init function (when loaded) */
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audit_null_plugin_deinit, /* deinit function (when unloaded) */
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0x0002, /* version */
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simple_status, /* status variables */
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NULL, /* system variables */
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NULL
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}
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mysql_declare_plugin_end;
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