WL#3154 "Enable REPAIR for CSV tables".

This is the first commit. Cleanups are
likely to follow after the merge.

mysql-test/r/csv.result

@@ -4993,6 +4993,38 @@ val
 2
 UNLOCK TABLES;
 DROP TABLE test_concurrent_insert;
+CREATE TABLE test_repair_table ( val integer ) ENGINE = CSV;
+CHECK TABLE test_repair_table;
+Table	Op	Msg_type	Msg_text
+test.test_repair_table	check	status	OK
+REPAIR TABLE test_repair_table;
+Table	Op	Msg_type	Msg_text
+test.test_repair_table	repair	status	OK
+DROP TABLE test_repair_table;
+CREATE TABLE test_repair_table2 ( val integer ) ENGINE = CSV;
+SELECT * from test_repair_table2;
+val
+Warnings:
+Error	1194	Table 'test_repair_table2' is marked as crashed and should be repaired
+SELECT * from test_repair_table2;
+val
+test_repair_table2.CSM
+CHECK TABLE test_repair_table2;
+Table	Op	Msg_type	Msg_text
+test.test_repair_table2	check	status	OK
+DROP TABLE test_repair_table2;
+CREATE TABLE test_repair_table3 ( val integer ) ENGINE = CSV;
+CHECK TABLE test_repair_table3;
+Table	Op	Msg_type	Msg_text
+test.test_repair_table3	check	error	Corrupt
+REPAIR TABLE test_repair_table3;
+Table	Op	Msg_type	Msg_text
+test.test_repair_table3	repair	status	OK
+SELECT * FROM test_repair_table3;
+val
+1
+4
+DROP TABLE test_repair_table3;
 create table t1 (a int) engine=csv;
 insert t1 values (1);
 delete from t1;

mysql-test/t/csv.test

@@ -1387,6 +1387,45 @@ UNLOCK TABLES;
 # cleanup
 DROP TABLE test_concurrent_insert;
 
+#
+# Test REPAIR/CHECK TABLE (5.1)
+#
+
+# Check that repair on the newly created table works fine
+
+CREATE TABLE test_repair_table ( val integer ) ENGINE = CSV;
+
+CHECK TABLE test_repair_table;
+REPAIR TABLE test_repair_table;
+
+DROP TABLE test_repair_table;
+
+#
+# Check autorepair. Here we also check that we can work w/o metafile
+# restore the meta-file
+#
+
+CREATE TABLE test_repair_table2 ( val integer ) ENGINE = CSV;
+--exec rm $MYSQLTEST_VARDIR/master-data/test/test_repair_table2.CSM
+# should give a warning and perform autorepair
+SELECT * from test_repair_table2;
+# this should work ok, as the table is already repaired
+SELECT * from test_repair_table2;
+# check that the metafile appeared again. chop the path to it
+--exec ls $MYSQLTEST_VARDIR/master-data/test/test_repair_table2.CSM | perl -pi -e "s/.*\///"
+CHECK TABLE test_repair_table2;
+DROP TABLE test_repair_table2;
+
+
+# Corrupt csv file and see if we can repair it
+CREATE TABLE test_repair_table3 ( val integer ) ENGINE = CSV;
+--exec echo -n -e \"1\"\\n\"4\"\\n\"3 > $MYSQLTEST_VARDIR/master-data/test/test_repair_table3.CSV
+CHECK TABLE test_repair_table3;
+REPAIR TABLE test_repair_table3;
+SELECT * FROM test_repair_table3;
+DROP TABLE test_repair_table3;
+
+
 #
 # BUG#13406 - incorrect amount of "records deleted"
 #

storage/csv/ha_tina.h

@@ -19,9 +19,16 @@
 #include <my_dir.h>
 
 #define DEFAULT_CHAIN_LENGTH 512
+/*
+  Version for file format.
+  1 - Initial Version. That is, the version when the metafile was introduced.
+*/
+
+#define TINA_VERSION 1
 
 typedef struct st_tina_share {
   char *table_name;
+  char data_file_name[FN_REFLEN];
   byte *mapped_file;                /* mapped region of file */
   uint table_name_length, use_count;
   /*
@@ -39,6 +46,9 @@ typedef struct st_tina_share {
   off_t saved_data_file_length;
   pthread_mutex_t mutex;
   THR_LOCK lock;
+  File meta_file;           /* Meta file we use */
+  bool crashed;             /* Meta file is crashed */
+  ha_rows rows_recorded;    /* Number of rows in tables */
 } TINA_SHARE;
 
 typedef struct tina_set {
@@ -108,7 +118,7 @@ public:
                                            ulong type, TABLE *table,
                                            uint count,
                                            bool called_by_logger_thread);
-  int open(const char *name, int mode, uint test_if_locked);
+  int open(const char *name, int mode, uint open_options);
   int close(void);
   int write_row(byte * buf);
   int update_row(const byte * old_data, byte * new_data);
@@ -116,7 +126,17 @@ public:
   int rnd_init(bool scan=1);
   int rnd_next(byte *buf);
   int rnd_pos(byte * buf, byte *pos);
+  bool check_and_repair(THD *thd);
+  int check(THD* thd, HA_CHECK_OPT* check_opt);
+  bool is_crashed() const;
+  int read_meta_file(File meta_file, ha_rows *rows);
+  int write_meta_file(File meta_file, ha_rows rows, bool dirty);
+  TINA_SHARE *get_share(const char *table_name, TABLE *table, int *rc);
+  int free_share(TINA_SHARE *share);
   int rnd_end();
+  int repair(THD* thd, HA_CHECK_OPT* check_opt);
+  /* This is required for SQL layer to know that we support autorepair */
+  bool auto_repair() const { return 1; }
   void position(const byte *record);
   void info(uint);
   int extra(enum ha_extra_function operation);