Added license information display to output of plugins schema, and tagged all plugins with GPL flag.

include/mysql/plugin.h:
  Adding license information.
plugin/fulltext/plugin_example.c:
  License
sql/ha_ndbcluster.cc:
  License
sql/ha_partition.cc:
  License
sql/handler.h:
  License
sql/log.cc:
  License
sql/sql_show.cc:
  Additional PLUIN display information
storage/archive/ha_archive.cc:
  License information added
storage/blackhole/ha_blackhole.cc:
  License information added
storage/csv/ha_tina.cc:
  License Information
storage/example/ha_example.cc:
  License information
storage/federated/ha_federated.cc:
  License Information
storage/heap/ha_heap.cc:
  License Information
storage/innobase/handler/ha_innodb.cc:
  License Information
storage/myisam/ha_myisam.cc:
  License Information
storage/myisammrg/ha_myisammrg.cc:
  License Information

include/mysql/plugin.h

@@ -31,6 +31,15 @@
 #define MYSQL_FTPARSER_PLUGIN        2  /* Full-text parser plugin      */
 #define MYSQL_MAX_PLUGIN_TYPE_NUM    3  /* The number of plugin types   */
 
+/* We use the following strings to define licenses for plugins */
+#define PLUGIN_LICENSE_PROPRIETARY 0
+#define PLUGIN_LICENSE_GPL 1
+#define PLUGIN_LICENSE_BSD 2
+
+#define PLUGIN_LICENSE_PROPRIETARY_STRING "PROPRIETARY"
+#define PLUGIN_LICENSE_GPL_STRING "GPL"
+#define PLUGIN_LICENSE_BSD_STRING "BSD"
+
 /*
   Macros for beginning and ending plugin declarations.  Between
   mysql_declare_plugin and mysql_declare_plugin_end there should
@@ -88,6 +97,7 @@ struct st_mysql_plugin
   const char *name;     /* plugin name                                  */
   const char *author;   /* plugin author (for SHOW PLUGINS)             */
   const char *descr;    /* general descriptive text (for SHOW PLUGINS ) */
+  int license;             /* the plugin type (a MYSQL_XXX_PLUGIN value)   */
   int (*init)(void *);  /* the function to invoke when plugin is loaded */
   int (*deinit)(void *);/* the function to invoke when plugin is unloaded */
   unsigned int version; /* plugin version (for SHOW PLUGINS)            */

plugin/fulltext/plugin_example.c

@@ -226,6 +226,7 @@ mysql_declare_plugin(ftexample)
   "simple_parser",            /* name                            */
   "MySQL AB",                 /* author                          */
   "Simple Full-Text Parser",  /* description                     */
+  PLUGIN_LICENSE_GPL,
   simple_parser_plugin_init,  /* init function (when loaded)     */
   simple_parser_plugin_deinit,/* deinit function (when unloaded) */
   0x0001,                     /* version                         */

sql/ha_ndbcluster.cc

@@ -10773,6 +10773,7 @@ mysql_declare_plugin(ndbcluster)
   ndbcluster_hton_name,
   "MySQL AB",
   "Clustered, fault-tolerant tables",
+  PLUGIN_LICENSE_GPL,
   ndbcluster_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100 /* 1.0 */,

sql/ha_partition.cc

@@ -5643,6 +5643,7 @@ mysql_declare_plugin(partition)
   "partition",
   "Mikael Ronstrom, MySQL AB",
   "Partition Storage Engine Helper",
+  PLUGIN_LICENSE_GPL,
   partition_initialize, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100, /* 1.0 */

sql/handler.h

@@ -683,6 +683,7 @@ struct handlerton
                      const char *wild, bool dir, List<char> *files);
    int (*table_exists_in_engine)(handlerton *hton, THD* thd, const char *db,
                                  const char *name);
+   uint32 license; /* Flag for Engine License */
 };
 
 

sql/log.cc

@@ -4689,6 +4689,7 @@ mysql_declare_plugin(binlog)
   "binlog",
   "MySQL AB",
   "This is a pseudo storage engine to represent the binlog in a transaction",
+  PLUGIN_LICENSE_GPL,
   binlog_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100 /* 1.0 */,

sql/sql_show.cc

@@ -211,6 +211,22 @@ static my_bool show_plugins(THD *thd, st_plugin_int *plugin,
   else
     table->field[8]->set_null();
 
+  switch (plug->license) {
+  case PLUGIN_LICENSE_GPL:
+    table->field[9]->store(PLUGIN_LICENSE_GPL_STRING, 
+                           strlen(PLUGIN_LICENSE_GPL_STRING), cs);
+    break;
+  case PLUGIN_LICENSE_BSD:
+    table->field[9]->store(PLUGIN_LICENSE_BSD_STRING, 
+                           strlen(PLUGIN_LICENSE_BSD_STRING), cs);
+    break;
+  default:
+    table->field[9]->store(PLUGIN_LICENSE_PROPRIETARY_STRING, 
+                           strlen(PLUGIN_LICENSE_PROPRIETARY_STRING), cs);
+    break;
+  }
+  table->field[9]->set_notnull();
+
   return schema_table_store_record(thd, table);
 }
 
@@ -5579,6 +5595,7 @@ ST_FIELD_INFO plugin_fields_info[]=
   {"PLUGIN_LIBRARY_VERSION", 20, MYSQL_TYPE_STRING, 0, 1, 0},
   {"PLUGIN_AUTHOR", NAME_LEN, MYSQL_TYPE_STRING, 0, 1, 0},
   {"PLUGIN_DESCRIPTION", 65535, MYSQL_TYPE_STRING, 0, 1, 0},
+  {"PLUGIN_LICENSE", 80, MYSQL_TYPE_STRING, 0, 1, "License"},
   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
 };
 

storage/archive/ha_archive.cc

@@ -1585,6 +1585,7 @@ mysql_declare_plugin(archive)
   "ARCHIVE",
   "Brian Aker, MySQL AB",
   "Archive storage engine",
+  PLUGIN_LICENSE_GPL,
   archive_db_init, /* Plugin Init */
   archive_db_done, /* Plugin Deinit */
   0x0100 /* 1.0 */,

storage/blackhole/ha_blackhole.cc

@@ -223,6 +223,7 @@ mysql_declare_plugin(blackhole)
   "BLACKHOLE",
   "MySQL AB",
   "/dev/null storage engine (anything you write to it disappears)",
+  PLUGIN_LICENSE_GPL,
   blackhole_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100 /* 1.0 */,

storage/csv/ha_tina.cc

@@ -1533,6 +1533,7 @@ mysql_declare_plugin(csv)
   "CSV",
   "Brian Aker, MySQL AB",
   "CSV storage engine",
+  PLUGIN_LICENSE_GPL,
   tina_init_func, /* Plugin Init */
   tina_done_func, /* Plugin Deinit */
   0x0100 /* 1.0 */,

storage/example/ha_example.cc

@@ -717,6 +717,7 @@ mysql_declare_plugin(example)
   "EXAMPLE",
   "Brian Aker, MySQL AB",
   "Example storage engine",
+  PLUGIN_LICENSE_GPL,
   example_init_func, /* Plugin Init */
   example_done_func, /* Plugin Deinit */
   0x0001 /* 0.1 */,

storage/federated/ha_federated.cc

@@ -2895,6 +2895,7 @@ mysql_declare_plugin(federated)
   "FEDERATED",
   "Patrick Galbraith and Brian Aker, MySQL AB",
   "Federated MySQL storage engine",
+  PLUGIN_LICENSE_GPL,
   federated_db_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100 /* 1.0 */,

storage/heap/ha_heap.cc

@@ -720,6 +720,7 @@ mysql_declare_plugin(heap)
   "MEMORY",
   "MySQL AB",
   "Hash based, stored in memory, useful for temporary tables",
+  PLUGIN_LICENSE_GPL,
   heap_init,
   NULL,
   0x0100, /* 1.0 */

storage/innobase/handler/ha_innodb.cc

@@ -7640,6 +7640,7 @@ mysql_declare_plugin(innobase)
   innobase_hton_name,
   "Innobase OY",
   "Supports transactions, row-level locking, and foreign keys",
+  PLUGIN_LICENSE_GPL,
   innobase_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100 /* 1.0 */,

storage/myisam/ha_myisam.cc

@@ -1818,6 +1818,7 @@ mysql_declare_plugin(myisam)
   "MyISAM",
   "MySQL AB",
   "Default engine as of MySQL 3.23 with great performance",
+  PLUGIN_LICENSE_GPL,
   myisam_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100, /* 1.0 */

storage/myisammrg/ha_myisammrg.cc

@@ -582,6 +582,7 @@ mysql_declare_plugin(myisammrg)
   "MRG_MYISAM",
   "MySQL AB",
   "Collection of identical MyISAM tables",
+  PLUGIN_LICENSE_GPL,
   myisammrg_init, /* Plugin Init */
   NULL, /* Plugin Deinit */
   0x0100, /* 1.0 */