InnoDB cleanup: Add const qualifiers to many char* arguments

innobase/dict/dict0dict.c:
  Replace char* arguments with const char*
innobase/dict/dict0load.c:
  Replace char* arguments with const char*
innobase/dict/dict0mem.c:
  Replace char* arguments with const char*
innobase/fil/fil0fil.c:
  Replace char* arguments with const char*
innobase/include/data0data.h:
  dfield_set_data(): add const qualifier
innobase/include/data0data.ic:
  dfield_set_data(): add const qualifier
  (temporarily shut up compiler warnings)
innobase/include/dict0dict.h:
  Replace char* arguments with const char*
innobase/include/dict0dict.ic:
  Replace char* arguments with const char*
innobase/include/dict0load.h:
  Replace char* arguments with const char*
innobase/include/dict0mem.h:
  Replace char* arguments with const char*
innobase/include/fil0fil.h:
  Replace char* arguments with const char*
innobase/include/os0file.h:
  Replace char* arguments with const char*
innobase/include/os0sync.h:
  Replace char* arguments with const char*
innobase/include/pars0pars.h:
  Replace char* arguments with const char*
innobase/include/pars0sym.h:
  Replace char* arguments with const char*
innobase/include/row0mysql.h:
  Replace char* arguments with const char*
innobase/include/row0sel.h:
  Replace char* arguments with const char*
innobase/include/trx0roll.h:
  Replace char* arguments with const char*
innobase/include/trx0sys.h:
  Replace char* arguments with const char*
innobase/include/trx0trx.h:
  Replace char* arguments with const char*
innobase/include/ut0rnd.h:
  Replace char* arguments with const char*
innobase/include/ut0rnd.ic:
  Replace char* arguments with const char*
innobase/include/ut0ut.h:
  Remove unused function ut_printf()
innobase/os/os0file.c:
  Replace char* arguments with const char*
innobase/os/os0sync.c:
  Replace char* arguments with const char*
innobase/pars/pars0pars.c:
  Replace char* arguments with const char*
innobase/pars/pars0sym.c:
  Use mem_heap_strdupl() instead of mem_heap_alloc() and memcpy()
innobase/row/row0mysql.c:
  Replace char* arguments with const char*
innobase/row/row0sel.c:
  Replace char* arguments with const char*
innobase/trx/trx0roll.c:
  Replace char* arguments with const char*
innobase/trx/trx0sys.c:
  Replace char* arguments with const char*

31 files changed, 553 insertions, 519 deletions

diff --git a/innobase/dict/dict0dict.c b/innobase/dict/dict0dict.c
index c9e3ac5ec66..6a6ac2492f8 100644
--- a/innobase/dict/dict0dict.c
+++ b/innobase/dict/dict0dict.c
@@ -70,7 +70,7 @@ dict_col_reposition_in_cache(
 /*=========================*/
 	dict_table_t*	table,		/* in: table */
 	dict_col_t*	col,		/* in: column */
-	char*		new_name);	/* in: new table name */
+	const char*	new_name);	/* in: new table name */
 /**************************************************************************
 Removes a column from the data dictionary hash table. */
 static
@@ -309,7 +309,7 @@ dict_table_get_index_noninline(
 /*===========================*/
 				/* out: index, NULL if does not exist */
 	dict_table_t*	table,	/* in: table */
-	char*		name)	/* in: index name */
+	const char*	name)	/* in: index name */
 {
 	return(dict_table_get_index(table, name));
 }
@@ -693,9 +693,10 @@ directory dict_table_get_low is usually the appropriate function. */
 dict_table_t*
 dict_table_get(
 /*===========*/
-				/* out: table, NULL if does not exist */
-	char*	table_name,	/* in: table name */
-	trx_t*	trx)		/* in: transaction handle or NULL */
+					/* out: table, NULL if
+					does not exist */
+	const char*	table_name,	/* in: table name */
+	trx_t*		trx)		/* in: transaction handle or NULL */
 {
 	dict_table_t*	table;
 
@@ -722,9 +723,10 @@ Returns a table object and increments MySQL open handle count on the table. */
 dict_table_t*
 dict_table_get_and_increment_handle_count(
 /*======================================*/
-				/* out: table, NULL if does not exist */
-	char*	table_name,	/* in: table name */
-	trx_t*	trx)		/* in: transaction handle or NULL */
+					/* out: table, NULL if
+					does not exist */
+	const char*	table_name,	/* in: table name */
+	trx_t*		trx)		/* in: transaction handle or NULL */
 {
 	dict_table_t*	table;
 
@@ -886,7 +888,7 @@ dict_table_rename_in_cache(
 /*=======================*/
 					/* out: TRUE if success */
 	dict_table_t*	table,		/* in: table */
-	char*		new_name,	/* in: new name */
+	const char*	new_name,	/* in: new name */
 	ibool		rename_also_foreigns)/* in: in ALTER TABLE we want
 					to preserve the original table name
 					in constraints which reference it */
@@ -1294,7 +1296,7 @@ dict_col_reposition_in_cache(
 /*=========================*/
 	dict_table_t*	table,		/* in: table */
 	dict_col_t*	col,		/* in: column */
-	char*		new_name)	/* in: new table name */
+	const char*	new_name)	/* in: new table name */
 {
 	ulint		fold;
 
@@ -2019,7 +2021,7 @@ dict_foreign_find_index(
 				column types must match */
 {
 	dict_index_t*	index;
-	char*		col_name;
+	const char*	col_name;
 	ulint		i;
 	
 	index = dict_table_get_first_index(table);
@@ -2564,14 +2566,14 @@ static
 char*
 dict_strip_comments(
 /*================*/
-				/* out, own: SQL string stripped from
-				comments; the caller must free this
-				with mem_free()! */
-	char*	sql_string)	/* in: SQL string */
+					/* out, own: SQL string stripped from
+					comments; the caller must free this
+					with mem_free()! */
+	const char*	sql_string)	/* in: SQL string */
 {
-	char*	str;
-	char*	sptr;
-	char*	ptr;
+	char*		str;
+	const char*	sptr;
+	char*		ptr;
 	
 	str = mem_alloc(strlen(sql_string) + 1);
 
@@ -2970,7 +2972,8 @@ col_loop1:
 	}
 
 	foreign->foreign_table = table;
-	foreign->foreign_table_name = table->name;
+	foreign->foreign_table_name = mem_heap_strdup(foreign->heap,
+							table->name);
 	foreign->foreign_index = index;
 	foreign->n_fields = i;
 	foreign->foreign_col_names = mem_heap_alloc(foreign->heap,
@@ -3244,16 +3247,19 @@ allowed to contain more fields than mentioned in the constraint. */
 ulint
 dict_create_foreign_constraints(
 /*============================*/
-				/* out: error code or DB_SUCCESS */
-	trx_t*	trx,		/* in: transaction */
-	char*	sql_string,	/* in: table create or ALTER TABLE
-				statement where foreign keys are declared like:
-				FOREIGN KEY (a, b) REFERENCES table2(c, d),
-				table2 can be written also with the database
-				name before it: test.table2; the default
-				database is the database of parameter name */
-	char*	name)		/* in: table full name in the normalized form
-				database_name/table_name */
+					/* out: error code or DB_SUCCESS */
+	trx_t*		trx,		/* in: transaction */
+	const char*	sql_string,	/* in: table create statement where
+					foreign keys are declared like:
+					FOREIGN KEY (a, b) REFERENCES
+					table2(c, d), table2 can be written
+					also with the database
+					name before it: test.table2; the
+					default database id the database of
+					parameter name */
+	const char*	name)		/* in: table full name in the
+					normalized form
+					database_name/table_name */
 {
 	char*		str;
 	ulint		err;
diff --git a/innobase/dict/dict0load.c b/innobase/dict/dict0load.c
index bf8b4582f63..071a3b4c684 100644
--- a/innobase/dict/dict0load.c
+++ b/innobase/dict/dict0load.c
@@ -27,9 +27,10 @@ Finds the first table name in the given database. */
 char*
 dict_get_first_table_name_in_db(
 /*============================*/
-			/* out, own: table name, NULL if does not exist;
-			the caller must free the memory in the string! */
-	char*	name)	/* in: database name which ends to '/' */
+				/* out, own: table name, NULL if
+				does not exist; the caller must
+				free the memory in the string! */
+	const char*	name)	/* in: database name which ends to '/' */
 {
 	dict_table_t*	sys_tables;
 	btr_pcur_t	pcur;
@@ -389,8 +390,8 @@ Report that an index field or index for a table has been delete marked. */
 static
 void
 dict_load_report_deleted_index(
-	char*	name,	/* in: table name */
-	ulint	field)	/* in: index field, or ULINT_UNDEFINED */
+	const char*	name,	/* in: table name */
+	ulint		field)	/* in: index field, or ULINT_UNDEFINED */
 {
 	fputs("InnoDB: Error: data dictionary entry"
 		" for table ", stderr);
@@ -688,12 +689,13 @@ dictionary cache. */
 dict_table_t*
 dict_load_table(
 /*============*/
-			/* out: table, NULL if does not exist; if the table is
-			stored in an .ibd file, but the file does not exist,
-			then we set the ibd_file_missing flag TRUE in the table
-			object we return */
-	char*	name)	/* in: table name in the databasename/tablename
-			format */
+				/* out: table, NULL if does not exist;
+				if the table is stored in an .ibd file,
+				but the file does not exist,
+				then we set the ibd_file_missing flag TRUE
+				in the table object we return */
+	const char*	name)	/* in: table name in the
+				databasename/tablename format */
 {
 	ibool		ibd_file_missing	= FALSE;
 	dict_table_t*	table;
@@ -1185,8 +1187,8 @@ already in the dictionary cache. */
 ulint
 dict_load_foreigns(
 /*===============*/
-				/* out: DB_SUCCESS or error code */
-	char*	table_name)	/* in: table name */
+					/* out: DB_SUCCESS or error code */
+	const char*	table_name)	/* in: table name */
 {
 	btr_pcur_t	pcur;
 	mem_heap_t* 	heap;
diff --git a/innobase/dict/dict0mem.c b/innobase/dict/dict0mem.c
index a4f83ddd657..936b06b1905 100644
--- a/innobase/dict/dict0mem.c
+++ b/innobase/dict/dict0mem.c
@@ -30,15 +30,14 @@ dict_table_t*
 dict_mem_table_create(
 /*==================*/
 				/* out, own: table object */
-	char*	name,		/* in: table name */
-	ulint	space,		/* in: space where the clustered index of
+	const char*	name,	/* in: table name */
+	ulint		space,	/* in: space where the clustered index of
 				the table is placed; this parameter is
 				ignored if the table is made a member of
 				a cluster */
-	ulint	n_cols)		/* in: number of columns */
+	ulint		n_cols)	/* in: number of columns */
 {
 	dict_table_t*	table;
-	char*		str;
 	mem_heap_t*	heap;
 	
 	ut_ad(name);
@@ -48,11 +47,9 @@ dict_mem_table_create(
 	table = mem_heap_alloc(heap, sizeof(dict_table_t));
 
 	table->heap = heap;
-	
-	str = mem_heap_strdup(heap, name);
 
 	table->type = DICT_TABLE_ORDINARY;
-	table->name = str;
+	table->name = mem_heap_strdup(heap, name);
 	table->space = space;
 	table->ibd_file_missing = FALSE;
 	table->tablespace_discarded = FALSE;
@@ -103,11 +100,11 @@ dict_table_t*
 dict_mem_cluster_create(
 /*====================*/
 				/* out, own: cluster object */
-	char*	name,		/* in: cluster name */
-	ulint	space,		/* in: space where the clustered indexes
+	const char*	name,	/* in: cluster name */
+	ulint		space,	/* in: space where the clustered indexes
 				of the member tables are placed */
-	ulint	n_cols,		/* in: number of columns */
-	ulint	mix_len)	/* in: length of the common key prefix in the
+	ulint		n_cols,	/* in: number of columns */
+	ulint		mix_len)/* in: length of the common key prefix in the
 				cluster */
 {
 	dict_table_t*		cluster;
@@ -127,7 +124,7 @@ void
 dict_mem_table_make_cluster_member(
 /*===============================*/
 	dict_table_t*	table,		/* in: non-published table */
-	char*		cluster_name)	/* in: cluster name */
+	const char*	cluster_name)	/* in: cluster name */
 {
 	table->type = DICT_TABLE_CLUSTER_MEMBER;
 	table->cluster_name = cluster_name;
@@ -140,7 +137,7 @@ void
 dict_mem_table_add_col(
 /*===================*/
 	dict_table_t*	table,	/* in: table */
-	char*		name,	/* in: column name */
+	const char*	name,	/* in: column name */
 	ulint		mtype,	/* in: main datatype */
 	ulint		prtype,	/* in: precise type */
 	ulint		len,	/* in: length */
@@ -174,14 +171,15 @@ Creates an index memory object. */
 dict_index_t*
 dict_mem_index_create(
 /*==================*/
-				/* out, own: index object */
-	char*	table_name,	/* in: table name */
-	char*	index_name,	/* in: index name */
-	ulint	space,		/* in: space where the index tree is placed,
-				ignored if the index is of the clustered
-				type */
-	ulint	type,		/* in: DICT_UNIQUE, DICT_CLUSTERED, ... ORed */
-	ulint	n_fields)	/* in: number of fields */
+					/* out, own: index object */
+	const char*	table_name,	/* in: table name */
+	const char*	index_name,	/* in: index name */
+	ulint		space,		/* in: space where the index tree is
+					placed, ignored if the index is of
+					the clustered type */
+	ulint		type,		/* in: DICT_UNIQUE,
+					DICT_CLUSTERED, ... ORed */
+	ulint		n_fields)	/* in: number of fields */
 {
 	dict_index_t*	index;
 	mem_heap_t*	heap;
@@ -259,7 +257,7 @@ void
 dict_mem_index_add_field(
 /*=====================*/
 	dict_index_t*	index,		/* in: index */
-	char*		name,		/* in: column name */
+	const char*	name,		/* in: column name */
 	ulint		order,		/* in: order criterion; 0 means an
 					ascending order */
 	ulint		prefix_len)	/* in: 0 or the column prefix length
diff --git a/innobase/fil/fil0fil.c b/innobase/fil/fil0fil.c
index b9aff246802..28eea0ba188 100644
--- a/innobase/fil/fil0fil.c
+++ b/innobase/fil/fil0fil.c
@@ -390,11 +390,12 @@ Appends a new file to the chain of files of a space. File must be closed. */
 void
 fil_node_create(
 /*============*/
-	char*	name,	/* in: file name (file must be closed) */
-	ulint	size,	/* in: file size in database blocks, rounded downwards
-			to an integer */
-	ulint	id,	/* in: space id where to append */
-	ibool	is_raw)	/* in: TRUE if a raw device or a raw disk partition */
+	const char*	name,	/* in: file name (file must be closed) */
+	ulint		size,	/* in: file size in database blocks, rounded
+				downwards to an integer */
+	ulint		id,	/* in: space id where to append */
+	ibool		is_raw)	/* in: TRUE if a raw device or
+				a raw disk partition */
 {
 	fil_system_t*	system	= fil_system;
 	fil_node_t*	node;
@@ -804,10 +805,10 @@ there is an error, prints an error message to the .err log. */
 ibool
 fil_space_create(
 /*=============*/
-			/* out: TRUE if success */
-	char*	name,	/* in: space name */
-	ulint	id,	/* in: space id */
-	ulint	purpose)/* in: FIL_TABLESPACE, or FIL_LOG if log */
+				/* out: TRUE if success */
+	const char*	name,	/* in: space name */
+	ulint		id,	/* in: space id */
+	ulint		purpose)/* in: FIL_TABLESPACE, or FIL_LOG if log */
 {
 	fil_system_t*	system		= fil_system;
 	fil_space_t*	space;	
@@ -1542,16 +1543,18 @@ static
 void
 fil_op_write_log(
 /*=============*/
-	ulint	type,		/* in: MLOG_FILE_CREATE, MLOG_FILE_DELETE, or
-                        	MLOG_FILE_RENAME */
-	ulint	space_id,	/* in: space id */
-	char*	name,		/* in: table name in the familiar
-				'databasename/tablename' format, or the file
-				path in the case of MLOG_FILE_DELETE */ 
-	char*	new_name,	/* in: if type is MLOG_FILE_RENAME, the new
-				table name in the 'databasename/tablename'
-				format */
-	mtr_t*	mtr)		/* in: mini-transaction handle */
+	ulint		type,		/* in: MLOG_FILE_CREATE,
+					MLOG_FILE_DELETE, or
+					MLOG_FILE_RENAME */
+	ulint		space_id,	/* in: space id */
+	const char*	name,		/* in: table name in the familiar
+					'databasename/tablename' format, or
+					the file path in the case of
+					MLOG_FILE_DELETE */ 
+	const char*	new_name,	/* in: if type is MLOG_FILE_RENAME,
+					the new table name in the
+					'databasename/tablename' format */
+	mtr_t*		mtr)		/* in: mini-transaction handle */
 {
 	byte*	log_ptr;
 
@@ -1960,14 +1963,15 @@ tablespace memory cache. */
 ibool
 fil_rename_tablespace(
 /*==================*/
-				/* out: TRUE if success */
-	char*	old_name,	/* in: old table name in the standard
-				databasename/tablename format of InnoDB, or
-				NULL if we do the rename based on the space
-				id only */
-	ulint	id,		/* in: space id */
-	char*	new_name)	/* in: new table name in the standard
-				databasename/tablename format of InnoDB */
+					/* out: TRUE if success */
+	const char*	old_name,	/* in: old table name in the standard
+					databasename/tablename format of
+					InnoDB, or NULL if we do the rename
+					based on the space id only */
+	ulint		id,		/* in: space id */
+	const char*	new_name)	/* in: new table name in the standard
+					databasename/tablename format
+					of InnoDB */
 {
 	fil_system_t*	system		= fil_system;
 	ibool		success;
@@ -2124,15 +2128,16 @@ path '.'. */
 ulint
 fil_create_new_single_table_tablespace(
 /*===================================*/
-				/* out: DB_SUCCESS or error code */
-	ulint*	space_id,	/* in/out: space id; if this is != 0, then
-				this is an input parameter, otherwise
-				output */
-	char*	tablename,	/* in: the table name in the usual
-				databasename/tablename format of InnoDB */
-	ulint	size)		/* in: the initial size of the tablespace file
-				in pages, must be >= FIL_IBD_FILE_INITIAL_SIZE
-				*/
+					/* out: DB_SUCCESS or error code */
+	ulint*		space_id,	/* in/out: space id; if this is != 0,
+					then this is an input parameter,
+					otherwise output */
+	const char*	tablename,	/* in: the table name in the usual
+					databasename/tablename format
+					of InnoDB */
+	ulint		size)		/* in: the initial size of the
+					tablespace file in pages,
+					must be >= FIL_IBD_FILE_INITIAL_SIZE */
 {
 	os_file_t       file;
 	ibool		ret;
@@ -2293,12 +2298,12 @@ lsn's just by looking at that flush lsn. */
 ibool
 fil_reset_too_high_lsns(
 /*====================*/
-				/* out: TRUE if success */
-	char*	name,		/* in: table name in the databasename/tablename
-				format */
-	dulint	current_lsn)	/* in: reset lsn's if the lsn stamped to
-				FIL_PAGE_FILE_FLUSH_LSN in the first page is
-				too high */
+					/* out: TRUE if success */
+	const char*	name,		/* in: table name in the
+					databasename/tablename format */
+	dulint		current_lsn)	/* in: reset lsn's if the lsn stamped
+					to FIL_PAGE_FILE_FLUSH_LSN in the
+					first page is too high */
 {
 	os_file_t	file;
 	char*		filepath;
@@ -2433,10 +2438,10 @@ closes it after we have looked at the space id in it. */
 ibool
 fil_open_single_table_tablespace(
 /*=============================*/
-			/* out: TRUE if success */
-	ulint	id,	/* in: space id */
-	char*	name)	/* in: table name in the databasename/tablename
-			format */
+				/* out: TRUE if success */
+	ulint		id,	/* in: space id */
+	const char*	name)	/* in: table name in the
+				databasename/tablename format */
 {
 	os_file_t	file;
 	char*		filepath;
@@ -2937,20 +2942,22 @@ there may be many tablespaces which are not yet in the memory cache. */
 ibool
 fil_space_for_table_exists_in_mem(
 /*==============================*/
-				/* out: TRUE if a matching tablespace exists
-				in the memory cache */
-	ulint	id,		/* in: space id */
-	char*	name,		/* in: table name in the standard
-				'databasename/tablename' format */
-	ibool	mark_space,	/* in: in crash recovery, at database startup
-				we mark all spaces which have an associated
-				table in the InnoDB data dictionary, so that
-				we can print a warning about orphaned
-				tablespaces */
-	ibool	print_error_if_does_not_exist)
-				/* in: print detailed error information to
-				the .err log if a matching tablespace is
-				not found from memory */
+					/* out: TRUE if a matching tablespace
+					exists in the memory cache */
+	ulint		id,		/* in: space id */
+	const char*	name,		/* in: table name in the standard
+					'databasename/tablename' format */
+	ibool		mark_space,	/* in: in crash recovery, at database
+					startup we mark all spaces which have
+					an associated table in the InnoDB
+					data dictionary, so that
+					we can print a warning about orphaned
+					tablespaces */
+	ibool		print_error_if_does_not_exist)
+					/* in: print detailed error
+					information to the .err log if a
+					matching tablespace is not found from
+					memory */
 {
 	fil_system_t*	system		= fil_system;
 	fil_space_t*	namespace;
diff --git a/innobase/include/data0data.h b/innobase/include/data0data.h
index 99d3c297039..e2de13d0520 100644
--- a/innobase/include/data0data.h
+++ b/innobase/include/data0data.h
@@ -86,7 +86,7 @@ void
 dfield_set_data(
 /*============*/
 	dfield_t* 	field,	/* in: field */
-	void*		data,	/* in: data */
+	const void*	data,	/* in: data */
 	ulint		len);	/* in: length or UNIV_SQL_NULL */
 /**************************************************************************
 Writes an SQL null field full of zeros. */
diff --git a/innobase/include/data0data.ic b/innobase/include/data0data.ic
index 697a272ccd6..569bf898801 100644
--- a/innobase/include/data0data.ic
+++ b/innobase/include/data0data.ic
@@ -93,7 +93,7 @@ void
 dfield_set_data(
 /*============*/
 	dfield_t* 	field,	/* in: field */
-	void*		data,	/* in: data */
+	const void*	data,	/* in: data */
 	ulint		len)	/* in: length or UNIV_SQL_NULL */
 {
 	ut_ad(field);
diff --git a/innobase/include/dict0dict.h b/innobase/include/dict0dict.h
index 98636f6e1cb..fe04359d6f1 100644
--- a/innobase/include/dict0dict.h
+++ b/innobase/include/dict0dict.h
@@ -166,7 +166,7 @@ dict_table_rename_in_cache(
 /*=======================*/
 					/* out: TRUE if success */
 	dict_table_t*	table,		/* in: table */
-	char*		new_name,	/* in: new name */
+	const char*	new_name,	/* in: new name */
 	ibool		rename_also_foreigns);/* in: in ALTER TABLE we want
 					to preserve the original table name
 					in constraints which reference it */
@@ -210,16 +210,19 @@ fields than mentioned in the constraint. */
 ulint
 dict_create_foreign_constraints(
 /*============================*/
-				/* out: error code or DB_SUCCESS */
-	trx_t*	trx,		/* in: transaction */
-	char*	sql_string,	/* in: table create statement where
-				foreign keys are declared like:
-				FOREIGN KEY (a, b) REFERENCES table2(c, d),
-				table2 can be written also with the database
-				name before it: test.table2; the default
-				database id the database of parameter name */
-	char*	name);		/* in: table full name in the normalized form
-				database_name/table_name */
+					/* out: error code or DB_SUCCESS */
+	trx_t*		trx,		/* in: transaction */
+	const char*	sql_string,	/* in: table create statement where
+					foreign keys are declared like:
+					FOREIGN KEY (a, b) REFERENCES
+					table2(c, d), table2 can be written
+					also with the database
+					name before it: test.table2; the
+					default database id the database of
+					parameter name */
+	const char*	name);		/* in: table full name in the
+					normalized form
+					database_name/table_name */
 /**************************************************************************
 Parses the CONSTRAINT id's to be dropped in an ALTER TABLE statement. */
 
@@ -246,9 +249,10 @@ directory dict_table_get_low is usually the appropriate function. */
 dict_table_t*
 dict_table_get(
 /*===========*/
-				/* out: table, NULL if does not exist */
-	char*	table_name,	/* in: table name */
-	trx_t*	trx);		/* in: transaction handle */
+					/* out: table, NULL if
+					does not exist */
+	const char*	table_name,	/* in: table name */
+	trx_t*		trx);		/* in: transaction handle */
 /**************************************************************************
 Returns a table object and increments MySQL open handle count on the table.
 */
@@ -256,9 +260,10 @@ Returns a table object and increments MySQL open handle count on the table.
 dict_table_t*
 dict_table_get_and_increment_handle_count(
 /*======================================*/
-				/* out: table, NULL if does not exist */
-	char*	table_name,	/* in: table name */
-	trx_t*	trx);		/* in: transaction handle or NULL */
+					/* out: table, NULL if
+					does not exist */
+	const char*	table_name,	/* in: table name */
+	trx_t*		trx);		/* in: transaction handle or NULL */
 /**************************************************************************
 Returns a table object, based on table id, and memoryfixes it. */
 
@@ -290,8 +295,8 @@ UNIV_INLINE
 dict_table_t*
 dict_table_check_if_in_cache_low(
 /*==============================*/
-				/* out: table, NULL if not found */
-	char*	table_name);	/* in: table name */
+					/* out: table, NULL if not found */
+	const char*	table_name);	/* in: table name */
 /**************************************************************************
 Gets a table; loads it to the dictionary cache if necessary. A low-level
 function. */
@@ -299,8 +304,8 @@ UNIV_INLINE
 dict_table_t*
 dict_table_get_low(
 /*===============*/
-				/* out: table, NULL if not found */
-	char*	table_name);	/* in: table name */
+					/* out: table, NULL if not found */
+	const char*	table_name);	/* in: table name */
 /**************************************************************************
 Returns an index object. */
 UNIV_INLINE
@@ -309,7 +314,7 @@ dict_table_get_index(
 /*=================*/
 				/* out: index, NULL if does not exist */
 	dict_table_t*	table,	/* in: table */
-	char*		name);	/* in: index name */
+	const char*	name);	/* in: index name */
 /**************************************************************************
 Returns an index object. */
 
@@ -318,7 +323,7 @@ dict_table_get_index_noninline(
 /*===========================*/
 				/* out: index, NULL if does not exist */
 	dict_table_t*	table,	/* in: table */
-	char*		name);	/* in: index name */
+	const char*	name);	/* in: index name */
 /**************************************************************************
 Prints a table data. */
 
@@ -340,7 +345,7 @@ Prints a table data when we know the table name. */
 void
 dict_table_print_by_name(
 /*=====================*/
-	char*	name);
+	const char*	name);
 #endif /* UNIV_DEBUG */
 /**************************************************************************
 Outputs info on foreign keys of a table. */
diff --git a/innobase/include/dict0dict.ic b/innobase/include/dict0dict.ic
index 57ef4b896f5..0f7cc8973db 100644
--- a/innobase/include/dict0dict.ic
+++ b/innobase/include/dict0dict.ic
@@ -536,8 +536,8 @@ UNIV_INLINE
 dict_table_t*
 dict_table_check_if_in_cache_low(
 /*==============================*/
-				/* out: table, NULL if not found */
-	char*	table_name)	/* in: table name */
+					/* out: table, NULL if not found */
+	const char*	table_name)	/* in: table name */
 {
 	dict_table_t*	table;
 	ulint		table_fold;
@@ -562,8 +562,8 @@ UNIV_INLINE
 dict_table_t*
 dict_table_get_low(
 /*===============*/
-				/* out: table, NULL if not found */
-	char*	table_name)	/* in: table name */
+					/* out: table, NULL if not found */
+	const char*	table_name)	/* in: table name */
 {
 	dict_table_t*	table;
 	
@@ -642,7 +642,7 @@ dict_table_get_index(
 /*=================*/
 				/* out: index, NULL if does not exist */
 	dict_table_t*	table,	/* in: table */
-	char*		name)	/* in: index name */
+	const char*	name)	/* in: index name */
 {
 	dict_index_t*	index	= NULL;
 	
diff --git a/innobase/include/dict0load.h b/innobase/include/dict0load.h
index f7168a0f45f..d4dccb33373 100644
--- a/innobase/include/dict0load.h
+++ b/innobase/include/dict0load.h
@@ -31,9 +31,10 @@ Finds the first table name in the given database. */
 char*
 dict_get_first_table_name_in_db(
 /*============================*/
-			/* out, own: table name, NULL if does not exist;
-			the caller must free the memory in the string! */
-	char*	name);	/* in: database name which ends to '/' */
+				/* out, own: table name, NULL if
+				does not exist; the caller must free
+				the memory in the string! */
+	const char*	name);	/* in: database name which ends to '/' */
 /************************************************************************
 Loads a table definition and also all its index definitions, and also
 the cluster definition if the table is a member in a cluster. Also loads
@@ -43,11 +44,13 @@ a foreign key references columns in this table. */
 dict_table_t*
 dict_load_table(
 /*============*/
-			/* out: table, NULL if does not exist; if the table is
-			stored in an .ibd file, but the file does not exist,
-			then we set the ibd_file_missing flag TRUE in the table
-			object we return */
-	char*	name);	/* in: table name */
+				/* out: table, NULL if does not exist;
+				if the table is stored in an .ibd file,
+				but the file does not exist,
+				then we set the ibd_file_missing flag TRUE
+				in the table object we return */
+	const char*	name);	/* in: table name in the
+				databasename/tablename format */
 /***************************************************************************
 Loads a table object based on the table id. */
 
@@ -75,8 +78,8 @@ already in the dictionary cache. */
 ulint
 dict_load_foreigns(
 /*===============*/
-				/* out: DB_SUCCESS or error code */
-	char*	table_name);	/* in: table name */
+					/* out: DB_SUCCESS or error code */
+	const char*	table_name);	/* in: table name */
 /************************************************************************
 Prints to the standard output information on all tables found in the data
 dictionary system table. */
diff --git a/innobase/include/dict0mem.h b/innobase/include/dict0mem.h
index 674868c9fce..f141ea9da09 100644
--- a/innobase/include/dict0mem.h
+++ b/innobase/include/dict0mem.h
@@ -48,27 +48,28 @@ Creates a table memory object. */
 dict_table_t*
 dict_mem_table_create(
 /*==================*/
-				/* out, own: table object */
-	char*	name,		/* in: table name */
-	ulint	space,		/* in: space where the clustered index of
-				the table is placed; this parameter is
-				ignored if the table is made a member of
-				a cluster */
-	ulint	n_cols);	/* in: number of columns */
+					/* out, own: table object */
+	const char*	name,		/* in: table name */
+	ulint		space,		/* in: space where the clustered index
+					of the table is placed; this parameter
+					is ignored if the table is made
+					a member of a cluster */
+	ulint		n_cols);	/* in: number of columns */
 /**************************************************************************
 Creates a cluster memory object. */
 
 dict_cluster_t*
 dict_mem_cluster_create(
 /*====================*/
-				/* out, own: cluster object (where the type
-				dict_cluster_t == dict_table_t) */
-	char*	name,		/* in: cluster name */
-	ulint	space,		/* in: space where the clustered indexes
-				of the member tables are placed */
-	ulint	n_cols,		/* in: number of columns */
-	ulint	mix_len);	/* in: length of the common key prefix in the
-				cluster */
+					/* out, own: cluster object (where the
+					type dict_cluster_t == dict_table_t) */
+	const char*	name,		/* in: cluster name */
+	ulint		space,		/* in: space where the clustered
+					indexes of the member tables are
+					placed */
+	ulint		n_cols,		/* in: number of columns */
+	ulint		mix_len);	/* in: length of the common key prefix
+					in the cluster */
 /**************************************************************************
 Declares a non-published table as a member in a cluster. */
 
@@ -76,7 +77,7 @@ void
 dict_mem_table_make_cluster_member(
 /*===============================*/
 	dict_table_t*	table,		/* in: non-published table */
-	char*		cluster_name);	/* in: cluster name */
+	const char*	cluster_name);	/* in: cluster name */
 /**************************************************************************
 Adds a column definition to a table. */
 
@@ -84,7 +85,7 @@ void
 dict_mem_table_add_col(
 /*===================*/
 	dict_table_t*	table,	/* in: table */
-	char*		name,	/* in: column name */
+	const char*	name,	/* in: column name */
 	ulint		mtype,	/* in: main datatype */
 	ulint		prtype,	/* in: precise type */
 	ulint		len,	/* in: length */
@@ -95,14 +96,15 @@ Creates an index memory object. */
 dict_index_t*
 dict_mem_index_create(
 /*==================*/
-				/* out, own: index object */
-	char*	table_name,	/* in: table name */
-	char*	index_name,	/* in: index name */
-	ulint	space,		/* in: space where the index tree is placed,
-				ignored if the index is of the clustered
-				type */
-	ulint	type,		/* in: DICT_UNIQUE, DICT_CLUSTERED, ... ORed */
-	ulint	n_fields);	/* in: number of fields */
+					/* out, own: index object */
+	const char*	table_name,	/* in: table name */
+	const char*	index_name,	/* in: index name */
+	ulint		space,		/* in: space where the index tree is
+					placed, ignored if the index is of
+					the clustered type */
+	ulint		type,		/* in: DICT_UNIQUE,
+					DICT_CLUSTERED, ... ORed */
+	ulint		n_fields);	/* in: number of fields */
 /**************************************************************************
 Adds a field definition to an index. NOTE: does not take a copy
 of the column name if the field is a column. The memory occupied
@@ -112,7 +114,7 @@ void
 dict_mem_index_add_field(
 /*=====================*/
 	dict_index_t*	index,		/* in: index */
-	char*		name,		/* in: column name */
+	const char*	name,		/* in: column name */
 	ulint		order,		/* in: order criterion; 0 means an
 					ascending order */
 	ulint		prefix_len);	/* in: 0 or the column prefix length
@@ -142,7 +144,7 @@ struct dict_col_struct{
 				clustered index */
 	ulint		ord_part;/* count of how many times this column
 				appears in ordering fields of an index */
-	char*		name;	/* name */
+	const char*	name;	/* name */
 	dtype_t		type;	/* data type */
 	dict_table_t*	table;	/* back pointer to table of this column */
 	ulint		aux;	/* this is used as an auxiliary variable 
@@ -154,7 +156,7 @@ struct dict_col_struct{
 /* Data structure for a field in an index */
 struct dict_field_struct{
 	dict_col_t*	col;		/* pointer to the table column */
-	char*		name;		/* name of the column */
+	const char*	name;		/* name of the column */
 	ulint		order;		/* flags for ordering this field:
 					DICT_DESCEND, ... */
 	ulint		prefix_len;	/* 0 or the length of the column
@@ -197,8 +199,8 @@ struct dict_index_struct{
 	dulint		id;	/* id of the index */
 	mem_heap_t*	heap;	/* memory heap */
 	ulint		type;	/* index type */
-	char*		name;	/* index name */
-	char*		table_name; /* table name */
+	const char*	name;	/* index name */
+	const char*	table_name; /* table name */
 	dict_table_t*	table;	/* back pointer to table */
 	ulint		space;	/* space where the index tree is placed */
 	ulint		page_no;/* page number of the index tree root */
@@ -254,12 +256,12 @@ struct dict_foreign_struct{
 					or DICT_FOREIGN_ON_DELETE_SET_NULL */
 	char*		foreign_table_name;/* foreign table name */
 	dict_table_t*	foreign_table;	/* table where the foreign key is */
-	char**		foreign_col_names;/* names of the columns in the
+	const char**	foreign_col_names;/* names of the columns in the
 					foreign key */
 	char*		referenced_table_name;/* referenced table name */
 	dict_table_t*	referenced_table;/* table where the referenced key
 					is */
-	char**		referenced_col_names;/* names of the referenced
+	const char**	referenced_col_names;/* names of the referenced
 					columns in the referenced table */
 	ulint		n_fields;	/* number of indexes' first fields
 					for which the the foreign key
@@ -295,7 +297,7 @@ struct dict_table_struct{
 	dulint		id;	/* id of the table or cluster */
 	ulint		type;	/* DICT_TABLE_ORDINARY, ... */
 	mem_heap_t*	heap;	/* memory heap */
-	char*		name;	/* table name */
+	const char*	name;	/* table name */
 	ulint		space;	/* space where the clustered index of the
 				table is placed */
 	ibool		ibd_file_missing;/* TRUE if this is in a single-table
@@ -363,7 +365,7 @@ struct dict_table_struct{
 	byte		mix_id_buf[12];
 				/* mix id of a mixed table written in
 				a compressed form */
-	char*		cluster_name; /* if the table is a member in a
+	const char*	cluster_name; /* if the table is a member in a
 				cluster, this is the name of the cluster */
 	/*----------------------*/
 	ibool		does_not_fit_in_memory;
diff --git a/innobase/include/fil0fil.h b/innobase/include/fil0fil.h
index f7cdeb7f195..b750e9b38f2 100644
--- a/innobase/include/fil0fil.h
+++ b/innobase/include/fil0fil.h
@@ -132,11 +132,12 @@ Appends a new file to the chain of files of a space. File must be closed. */
 void
 fil_node_create(
 /*============*/
-	char*	name,	/* in: file name (file must be closed) */
-	ulint	size,	/* in: file size in database blocks, rounded downwards
-			to an integer */
-	ulint	id,	/* in: space id where to append */
-	ibool	is_raw);/* in: TRUE if a raw device or a raw disk partition */
+	const char*	name,	/* in: file name (file must be closed) */
+	ulint		size,	/* in: file size in database blocks, rounded
+				downwards to an integer */
+	ulint		id,	/* in: space id where to append */
+	ibool		is_raw);/* in: TRUE if a raw device or
+				a raw disk partition */
 /********************************************************************
 Drops files from the start of a file space, so that its size is cut by
 the amount given. */
@@ -155,10 +156,10 @@ there is an error, prints an error message to the .err log. */
 ibool
 fil_space_create(
 /*=============*/
-			/* out: TRUE if success */
-	char*	name,	/* in: space name */
-	ulint	id,	/* in: space id */
-	ulint	purpose);/* in: FIL_TABLESPACE, or FIL_LOG if log */
+				/* out: TRUE if success */
+	const char*	name,	/* in: space name */
+	ulint		id,	/* in: space id */
+	ulint		purpose);/* in: FIL_TABLESPACE, or FIL_LOG if log */
 /***********************************************************************
 Frees a space object from a the tablespace memory cache. Closes the files in
 the chain but does not delete them. */
@@ -327,14 +328,15 @@ tablespace memory cache. */
 ibool
 fil_rename_tablespace(
 /*==================*/
-				/* out: TRUE if success */
-	char*	old_name,	/* in: old table name in the standard
-				databasename/tablename format of InnoDB, or
-				NULL if we do the rename based on the space
-				id only */
-	ulint	id,		/* in: space id */
-	char*	new_name);	/* in: new table name in the standard
-				databasename/tablename format of InnoDB */
+					/* out: TRUE if success */
+	const char*	old_name,	/* in: old table name in the standard
+					databasename/tablename format of
+					InnoDB, or NULL if we do the rename
+					based on the space id only */
+	ulint		id,		/* in: space id */
+	const char*	new_name);	/* in: new table name in the standard
+					databasename/tablename format
+					of InnoDB */
 /***********************************************************************
 Creates a new single-table tablespace to a database directory of MySQL.
 Database directories are under the 'datadir' of MySQL. The datadir is the
@@ -344,14 +346,16 @@ path '.'. */
 ulint
 fil_create_new_single_table_tablespace(
 /*===================================*/
-				/* out: DB_SUCCESS or error code */
-	ulint*	space_id,	/* in/out: space id; if this is != 0, then
-				this is an input parameter, otherwise
-				output */
-	char*	tablename,	/* in: the table name in the usual
-				databasename/tablename format of InnoDB */
-	ulint	size);		/* in: the initial size of the tablespace file
-				in pages, must be > 0 */
+					/* out: DB_SUCCESS or error code */
+	ulint*		space_id,	/* in/out: space id; if this is != 0,
+					then this is an input parameter,
+					otherwise output */
+	const char*	tablename,	/* in: the table name in the usual
+					databasename/tablename format
+					of InnoDB */
+	ulint		size);		/* in: the initial size of the
+					tablespace file in pages,
+					must be >= FIL_IBD_FILE_INITIAL_SIZE */
 /************************************************************************
 Tries to open a single-table tablespace and checks the space id is right in
 it. If does not succeed, prints an error message to the .err log. This
@@ -362,10 +366,10 @@ protection of the dictionary mutex, so that two users cannot race here. */
 ibool
 fil_open_single_table_tablespace(
 /*=============================*/
-			/* out: TRUE if success */
-	ulint	id,	/* in: space id */
-	char*	name);	/* in: table name in the databasename/tablename
-			format */
+				/* out: TRUE if success */
+	ulint		id,	/* in: space id */
+	const char*	name);	/* in: table name in the
+				databasename/tablename format */
 /************************************************************************
 It is possible, though very improbable, that the lsn's in the tablespace to be
 imported have risen above the current system lsn, if a lengthy purge, ibuf
@@ -379,12 +383,12 @@ lsn's just by looking at that flush lsn. */
 ibool
 fil_reset_too_high_lsns(
 /*====================*/
-				/* out: TRUE if success */
-	char*	name,		/* in: table name in the databasename/tablename
-				format */
-	dulint	current_lsn);	/* in: reset lsn's if the lsn stamped to
-				FIL_PAGE_FILE_FLUSH_LSN in the first page is
-				too high */
+					/* out: TRUE if success */
+	const char*	name,		/* in: table name in the
+					databasename/tablename format */
+	dulint		current_lsn);	/* in: reset lsn's if the lsn stamped
+					to FIL_PAGE_FILE_FLUSH_LSN in the
+					first page is too high */
 /************************************************************************
 At the server startup, if we need crash recovery, scans the database
 directories under the MySQL datadir, looking for .ibd files. Those files are
@@ -436,20 +440,22 @@ there may be many tablespaces which are not yet in the memory cache. */
 ibool
 fil_space_for_table_exists_in_mem(
 /*==============================*/
-				/* out: TRUE if a matching tablespace
-				exists in the memory cache */
-	ulint	id,		/* in: space id */
-	char*	name,		/* in: table name in the standard
-				'databasename/tablename' format */
-	ibool	mark_space,	/* in: in crash recovery, at database startup
-				we mark all spaces which have an associated
-				table in the InnoDB data dictionary, so that
-				we can print a warning about orphaned
-				tablespaces */
-	ibool	print_error_if_does_not_exist);
-				/* in: print detailed error information to
-				the .err log if a matching tablespace is
-				not found from memory */
+					/* out: TRUE if a matching tablespace
+					exists in the memory cache */
+	ulint		id,		/* in: space id */
+	const char*	name,		/* in: table name in the standard
+					'databasename/tablename' format */
+	ibool		mark_space,	/* in: in crash recovery, at database
+					startup we mark all spaces which have
+					an associated table in the InnoDB
+					data dictionary, so that
+					we can print a warning about orphaned
+					tablespaces */
+	ibool		print_error_if_does_not_exist);
+					/* in: print detailed error
+					information to the .err log if a
+					matching tablespace is not found from
+					memory */
 /**************************************************************************
 Tries to extend a data file so that it would accommodate the number of pages
 given. The tablespace must be cached in the memory cache. If the space is big
diff --git a/innobase/include/os0file.h b/innobase/include/os0file.h
index 3eccfcd3be5..930390241d3 100644
--- a/innobase/include/os0file.h
+++ b/innobase/include/os0file.h
@@ -177,13 +177,15 @@ and '..' items at the start of the directory listing. */
 os_file_dir_t
 os_file_opendir(
 /*============*/
-				/* out: directory stream, NULL if error */
-	char*	dirname,	/* in: directory name; it must not contain
-				a trailing '\' or '/' */
-	ibool	error_is_fatal);/* in: TRUE if we should treat an error as a
-				fatal error; if we try to open symlinks then
-				we do not wish a fatal error if it happens
-				not to be a directory */
+					/* out: directory stream, NULL if
+					error */
+	const char*	dirname,	/* in: directory name; it must not
+					contain a trailing '\' or '/' */
+	ibool		error_is_fatal);/* in: TRUE if we should treat an
+					error as a fatal error; if we try to
+					open symlinks then we do not wish a
+					fatal error if it happens not to be
+					a directory */
 /***************************************************************************
 Closes a directory stream. */
 
@@ -201,7 +203,7 @@ os_file_readdir_next_file(
 /*======================*/
 				/* out: 0 if ok, -1 if error, 1 if at the end
 				of the directory */
-	char*		dirname,/* in: directory name or path */
+	const char*	dirname,/* in: directory name or path */
 	os_file_dir_t	dir,	/* in: directory stream */
 	os_file_stat_t*	info);	/* in/out: buffer where the info is returned */
 /*********************************************************************
@@ -213,81 +215,89 @@ fail_if_exists arguments is true. */
 ibool
 os_file_create_directory(
 /*=====================*/
-				/* out: TRUE if call succeeds, FALSE on
-				error */
-	char*	pathname,	/* in: directory name as null-terminated
-				string */
-	ibool	fail_if_exists);/* in: if TRUE, pre-existing directory is
-				treated as an error. */
+					/* out: TRUE if call succeeds,
+					FALSE on error */
+	const char*	pathname,	/* in: directory name as
+					null-terminated string */
+	ibool		fail_if_exists);/* in: if TRUE, pre-existing directory
+					is treated as an error. */
 /********************************************************************
 A simple function to open or create a file. */
 
 os_file_t
 os_file_create_simple(
 /*==================*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode,/* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error), or
-                        OS_FILE_CREATE_PATH if new file (if exists, error) and
-                        subdirectories along its path are created (if needed)*/
-	ulint	access_type,/* in: OS_FILE_READ_ONLY or OS_FILE_READ_WRITE */
-	ibool*	success);/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file is
+				opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error), or
+	                        OS_FILE_CREATE_PATH if new file
+				(if exists, error) and subdirectories along
+				its path are created (if needed)*/
+	ulint		access_type,/* in: OS_FILE_READ_ONLY or
+				OS_FILE_READ_WRITE */
+	ibool*		success);/* out: TRUE if succeed, FALSE if error */
 /********************************************************************
 A simple function to open or create a file. */
 
 os_file_t
 os_file_create_simple_no_error_handling(
 /*====================================*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode,/* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error) */
-	ulint	access_type,/* in: OS_FILE_READ_ONLY, OS_FILE_READ_WRITE, or
-			OS_FILE_READ_ALLOW_DELETE; the last option is used by
-			a backup program reading the file */
-	ibool*	success);/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file
+				is opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error) */
+	ulint		access_type,/* in: OS_FILE_READ_ONLY,
+				OS_FILE_READ_WRITE, or
+				OS_FILE_READ_ALLOW_DELETE; the last option is
+				used by a backup program reading the file */
+	ibool*		success);/* out: TRUE if succeed, FALSE if error */
 /********************************************************************
 Opens an existing file or creates a new. */
 
 os_file_t
 os_file_create(
 /*===========*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode,/* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error), OS_FILE_OVERWRITE
-			if a new file is created or an old overwritten;
-			OS_FILE_OPEN_RAW, if a raw device or disk partition
-			should be opened */
-	ulint	purpose,/* in: OS_FILE_AIO, if asynchronous, non-buffered i/o
-			is desired, OS_FILE_NORMAL, if any normal file;
-			NOTE that it also depends on type, os_aio_.. and srv_..
-			variables whether we really use async i/o or
-			unbuffered i/o: look in the function source code for
-			the exact rules */
-	ulint	type,	/* in: OS_DATA_FILE or OS_LOG_FILE */
-	ibool*	success);/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file
+				is opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error),
+				OS_FILE_OVERWRITE if a new file is created
+				or an old overwritten;
+				OS_FILE_OPEN_RAW, if a raw device or disk
+				partition should be opened */
+	ulint		purpose,/* in: OS_FILE_AIO, if asynchronous,
+				non-buffered i/o is desired,
+				OS_FILE_NORMAL, if any normal file;
+				NOTE that it also depends on type, os_aio_..
+				and srv_.. variables whether we really use
+				async i/o or unbuffered i/o: look in the
+				function source code for the exact rules */
+	ulint		type,	/* in: OS_DATA_FILE or OS_LOG_FILE */
+	ibool*		success);/* out: TRUE if succeed, FALSE if error */
 /***************************************************************************
 Deletes a file. The file has to be closed before calling this. */
 
 ibool
 os_file_delete(
 /*===========*/
-			/* out: TRUE if success */
-	char*	name);	/* in: file path as a null-terminated string */
+				/* out: TRUE if success */
+	const char*	name);	/* in: file path as a null-terminated string */
 
 /***************************************************************************
 Deletes a file if it exists. The file has to be closed before calling this. */
@@ -295,8 +305,8 @@ Deletes a file if it exists. The file has to be closed before calling this. */
 ibool
 os_file_delete_if_exists(
 /*=====================*/
-			/* out: TRUE if success */
-	char*	name);	/* in: file path as a null-terminated string */
+				/* out: TRUE if success */
+	const char*	name);	/* in: file path as a null-terminated string */
 /***************************************************************************
 Renames a file (can also move it to another directory). It is safest that the
 file is closed before calling this function. */
@@ -304,10 +314,10 @@ file is closed before calling this function. */
 ibool
 os_file_rename(
 /*===========*/
-				/* out: TRUE if success */
-	char*	oldpath,	/* in: old file path as a null-terminated
-				string */
-	char*	newpath);	/* in: new file path */
+					/* out: TRUE if success */
+	const char*	oldpath,	/* in: old file path as a
+					null-terminated string */
+	const char*	newpath);	/* in: new file path */
 /***************************************************************************
 Closes a file handle. In case of error, error number can be retrieved with
 os_file_get_last_error. */
@@ -351,7 +361,7 @@ ibool
 os_file_set_size(
 /*=============*/
 				/* out: TRUE if success */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
 	ulint		size,	/* in: least significant 32 bits of file
@@ -426,10 +436,10 @@ os_file_write(
 /*==========*/
 				/* out: TRUE if request was
 				successful, FALSE if fail */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
-	void*		buf,	/* in: buffer from which to write */
+	const void*	buf,	/* in: buffer from which to write */
 	ulint		offset,	/* in: least significant 32 bits of file
 				offset where to write */
 	ulint		offset_high,/* in: most significant 32 bits of
@@ -442,8 +452,8 @@ ibool
 os_file_status(
 /*===========*/
 				/* out: TRUE if call succeeded */
-	char *		path,	/* in:  pathname of the file */
-	ibool *		exists,	/* out: TRUE if file exists */
+	const char*	path,	/* in:  pathname of the file */
+	ibool*		exists,	/* out: TRUE if file exists */
 	os_file_type_t* type);	/* out: type of the file (if it exists) */
 /********************************************************************
 The function os_file_dirname returns a directory component of a
@@ -478,7 +488,7 @@ os_file_dirname(
 /*============*/
 				/* out, own: directory component of the
 				pathname */
-	char*		path);	/* in: pathname */
+	const char*	path);	/* in: pathname */
 /********************************************************************
 Creates all missing subdirectories along the given path. */
 	
@@ -487,7 +497,7 @@ os_file_create_subdirs_if_needed(
 /*=============================*/
 				/* out: TRUE if call succeeded
 				   FALSE otherwise */
-	char*		path);	/* in: path name */
+	const char*	path);	/* in: path name */
 /****************************************************************************
 Initializes the asynchronous io system. Creates separate aio array for
 non-ibuf read and write, a third aio array for the ibuf i/o, with just one
@@ -527,7 +537,7 @@ os_aio(
 				because i/os are not actually handled until
 				all have been posted: use with great
 				caution! */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
 	void*		buf,	/* in: buffer where to read or from which
diff --git a/innobase/include/os0sync.h b/innobase/include/os0sync.h
index e1cf263216e..d27b1676f1b 100644
--- a/innobase/include/os0sync.h
+++ b/innobase/include/os0sync.h
@@ -87,9 +87,9 @@ explicitly by calling sync_os_reset_event. */
 os_event_t
 os_event_create(
 /*============*/
-			/* out: the event handle */
-	char*	name);	/* in: the name of the event, if NULL
-			the event is created without a name */
+				/* out: the event handle */
+	const char*	name);	/* in: the name of the event, if NULL
+				the event is created without a name */
 #ifdef __WIN__
 /*************************************************************
 Creates an auto-reset event semaphore, i.e., an event which is automatically
@@ -98,9 +98,9 @@ reset when a single thread is released. Works only in Windows. */
 os_event_t
 os_event_create_auto(
 /*=================*/
-			/* out: the event handle */
-	char*	name);	/* in: the name of the event, if NULL
-			the event is created without a name */
+				/* out: the event handle */
+	const char*	name);	/* in: the name of the event, if NULL
+				the event is created without a name */
 #endif
 /**************************************************************
 Sets an event semaphore to the signaled state: lets waiting threads
@@ -171,9 +171,9 @@ mutex semaphore of InnoDB itself (mutex_t) should be used where possible. */
 os_mutex_t
 os_mutex_create(
 /*============*/
-			/* out: the mutex handle */
-	char*	name);	/* in: the name of the mutex, if NULL
-			the mutex is created without a name */
+				/* out: the mutex handle */
+	const char*	name);	/* in: the name of the mutex, if NULL
+				the mutex is created without a name */
 /**************************************************************
 Acquires ownership of a mutex semaphore. */
 
diff --git a/innobase/include/pars0pars.h b/innobase/include/pars0pars.h
index c260557c424..28985e2f9d0 100644
--- a/innobase/include/pars0pars.h
+++ b/innobase/include/pars0pars.h
@@ -74,8 +74,8 @@ Parses an SQL string returning the query graph. */
 que_t*
 pars_sql(
 /*=====*/
-			/* out, own: the query graph */
-	char*	str);	/* in: SQL string */
+				/* out, own: the query graph */
+	const char*	str);	/* in: SQL string */
 /*****************************************************************
 Retrieves characters to the lexical analyzer. */
 
diff --git a/innobase/include/pars0sym.h b/innobase/include/pars0sym.h
index 3060fd06c8f..a40523861dd 100644
--- a/innobase/include/pars0sym.h
+++ b/innobase/include/pars0sym.h
@@ -122,7 +122,7 @@ struct sym_node_struct{
 							SYM_IMPLICIT_VAR,
 							SYM_LIT, SYM_TABLE,
 							SYM_CURSOR, ... */
-	char*				name;		/* name of an id */
+	const char*			name;		/* name of an id */
 	ulint				name_len;	/* id name length */
 	dict_table_t*			table;		/* table definition
 							if a table id or a
@@ -150,7 +150,7 @@ struct sym_tab_struct{
 	que_t*			query_graph;
 					/* query graph generated by the
 					parser */
-	char*			sql_string;
+	const char*		sql_string;
 					/* SQL string to parse */
 	int			string_len;
 					/* SQL string length */
diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h
index 0b9f34dda1e..af6d8969cfc 100644
--- a/innobase/include/row0mysql.h
+++ b/innobase/include/row0mysql.h
@@ -316,15 +316,16 @@ fields than mentioned in the constraint. */
 int
 row_table_add_foreign_constraints(
 /*==============================*/
-				/* out: error code or DB_SUCCESS */
-	trx_t*	trx,		/* in: transaction */
-	char*	sql_string,	/* in: table create statement where
-				foreign keys are declared like:
+					/* out: error code or DB_SUCCESS */
+	trx_t*		trx,		/* in: transaction */
+	const char*	sql_string,	/* in: table create statement where
+					foreign keys are declared like:
 				FOREIGN KEY (a, b) REFERENCES table2(c, d),
-				table2 can be written also with the database
-				name before it: test.table2 */
-	char*	name);		/* in: table full name in the normalized form
-				database_name/table_name */
+					table2 can be written also with the
+					database name before it: test.table2 */
+	const char*	name);		/* in: table full name in the
+					normalized form
+					database_name/table_name */
 /*************************************************************************
 The master thread in srv0srv.c calls this regularly to drop tables which
 we must drop in background after queries to them have ended. Such lazy
@@ -351,10 +352,10 @@ output by the master thread. */
 int
 row_drop_table_for_mysql(
 /*=====================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx,	/* in: transaction handle */
-	ibool	drop_db);/* in: TRUE=dropping whole database */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx,	/* in: transaction handle */
+	ibool		drop_db);/* in: TRUE=dropping whole database */
 
 /*************************************************************************
 Discards the tablespace of a table which stored in an .ibd file. Discarding
@@ -382,9 +383,9 @@ discard ongoing operations. */
 int
 row_discard_tablespace_for_mysql(
 /*=============================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx);	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx);	/* in: transaction handle */
 /*********************************************************************
 Imports a tablespace. The space id in the .ibd file must match the space id
 of the table in the data dictionary. */
@@ -392,28 +393,28 @@ of the table in the data dictionary. */
 int
 row_import_tablespace_for_mysql(
 /*============================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx);	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx);	/* in: transaction handle */
 /*************************************************************************
 Drops a database for MySQL. */
 
 int
 row_drop_database_for_mysql(
 /*========================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: database name which ends to '/' */
-	trx_t*	trx);	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: database name which ends to '/' */
+	trx_t*		trx);	/* in: transaction handle */
 /*************************************************************************
 Renames a table for MySQL. */
 
 int
 row_rename_table_for_mysql(
 /*=======================*/
-				/* out: error code or DB_SUCCESS */
-	char*	old_name,	/* in: old table name */
-	char*	new_name,	/* in: new table name */
-	trx_t*	trx);		/* in: transaction handle */
+					/* out: error code or DB_SUCCESS */
+	const char*	old_name,	/* in: old table name */
+	const char*	new_name,	/* in: new table name */
+	trx_t*		trx);		/* in: transaction handle */
 /*************************************************************************
 Checks a table for corruption. */
 
diff --git a/innobase/include/row0sel.h b/innobase/include/row0sel.h
index a35d588ad08..0be224eb255 100644
--- a/innobase/include/row0sel.h
+++ b/innobase/include/row0sel.h
@@ -144,11 +144,11 @@ consistent read result, or store it to the query cache. */
 ibool
 row_search_check_if_query_cache_permitted(
 /*======================================*/
-				/* out: TRUE if storing or retrieving from
-				the query cache is permitted */
-	trx_t*	trx,		/* in: transaction object */
-	char*	norm_name);	/* in: concatenation of database name, '/'
-				char, table name */
+					/* out: TRUE if storing or retrieving
+					from the query cache is permitted */
+	trx_t*		trx,		/* in: transaction object */
+	const char*	norm_name);	/* in: concatenation of database name,
+					'/' char, table name */
 
 
 /* A structure for caching column values for prefetched rows */
diff --git a/innobase/include/trx0roll.h b/innobase/include/trx0roll.h
index 0d7126c9c57..6004551f456 100644
--- a/innobase/include/trx0roll.h
+++ b/innobase/include/trx0roll.h
@@ -193,7 +193,7 @@ trx_rollback_to_savepoint_for_mysql(
 						DB_NO_SAVEPOINT,
 						otherwise DB_SUCCESS */
 	trx_t*		trx,			/* in: transaction handle */
-	char*		savepoint_name,		/* in: savepoint name */
+	const char*	savepoint_name,		/* in: savepoint name */
 	ib_longlong*	mysql_binlog_cache_pos);/* out: the MySQL binlog cache
 						position corresponding to this
 						savepoint; MySQL needs this
@@ -211,7 +211,7 @@ trx_savepoint_for_mysql(
 /*====================*/
 						/* out: always DB_SUCCESS */
 	trx_t*		trx,			/* in: transaction handle */
-	char*		savepoint_name,		/* in: savepoint name */
+	const char*	savepoint_name,		/* in: savepoint name */
 	ib_longlong	binlog_cache_pos);	/* in: MySQL binlog cache
 						position corresponding to this
 						connection at the time of the
diff --git a/innobase/include/trx0sys.h b/innobase/include/trx0sys.h
index 9987955ec76..7d20455ffdf 100644
--- a/innobase/include/trx0sys.h
+++ b/innobase/include/trx0sys.h
@@ -258,7 +258,7 @@ replication has proceeded. */
 void
 trx_sys_update_mysql_binlog_offset(
 /*===============================*/
-	char*		file_name,/* in: MySQL log file name */
+	const char*	file_name,/* in: MySQL log file name */
 	ib_longlong	offset,	/* in: position in that log file */
 	ulint		field,	/* in: offset of the MySQL log info field in
 				the trx sys header */
diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h
index 07d5e5a8215..a8c1df534da 100644
--- a/innobase/include/trx0trx.h
+++ b/innobase/include/trx0trx.h
@@ -315,7 +315,7 @@ struct trx_struct{
 	ulint		magic_n;
 	/* All the next fields are protected by the kernel mutex, except the
 	undo logs which are protected by undo_mutex */
-	char*		op_info;	/* English text describing the
+	const char*	op_info;	/* English text describing the
 					current operation, or an empty
 					string */
 	ulint		type;		/* TRX_USER, TRX_PURGE */
@@ -358,7 +358,7 @@ struct trx_struct{
 	char**		mysql_query_str;/* pointer to the field in mysqld_thd
 					which contains the pointer to the
 					current SQL query string */
-	char*		mysql_log_file_name;
+	const char*	mysql_log_file_name;
 					/* if MySQL binlog is used, this field
 					contains a pointer to the latest file
 					name; this is NULL if binlog is not
@@ -366,7 +366,7 @@ struct trx_struct{
 	ib_longlong	mysql_log_offset;/* if MySQL binlog is used, this field
 					contains the end offset of the binlog
 					entry */
-	char*		mysql_master_log_file_name;
+	const char*	mysql_master_log_file_name;
 					/* if the database server is a MySQL
 					replication slave, we have here the
 					master binlog name up to which
diff --git a/innobase/include/ut0rnd.h b/innobase/include/ut0rnd.h
index c8ef0dd4001..aeec5d2f6eb 100644
--- a/innobase/include/ut0rnd.h
+++ b/innobase/include/ut0rnd.h
@@ -92,17 +92,17 @@ UNIV_INLINE
 ulint
 ut_fold_string(
 /*===========*/
-			/* out: folded value */
-	char*	str);	/* in: null-terminated string */	
+				/* out: folded value */
+	const char*	str);	/* in: null-terminated string */	
 /*****************************************************************
 Folds a binary string. */
 UNIV_INLINE
 ulint
 ut_fold_binary(
 /*===========*/
-			/* out: folded value */
-	byte*	str,	/* in: string of bytes */
-	ulint	len);	/* in: length */
+				/* out: folded value */
+	const byte*	str,	/* in: string of bytes */
+	ulint		len);	/* in: length */
 /***************************************************************
 Looks for a prime number slightly greater than the given argument.
 The prime is chosen so that it is not near any power of 2. */
diff --git a/innobase/include/ut0rnd.ic b/innobase/include/ut0rnd.ic
index 5493c37404a..06d7012f60b 100644
--- a/innobase/include/ut0rnd.ic
+++ b/innobase/include/ut0rnd.ic
@@ -173,8 +173,8 @@ UNIV_INLINE
 ulint
 ut_fold_string(
 /*===========*/
-			/* out: folded value */
-	char*	str)	/* in: null-terminated string */	
+				/* out: folded value */
+	const char*	str)	/* in: null-terminated string */	
 {
 #ifdef UNIV_DEBUG
 	ulint	i = 0;
@@ -203,9 +203,9 @@ UNIV_INLINE
 ulint
 ut_fold_binary(
 /*===========*/
-			/* out: folded value */
-	byte*	str,	/* in: string of bytes */
-	ulint	len)	/* in: length */
+				/* out: folded value */
+	const byte*	str,	/* in: string of bytes */
+	ulint		len)	/* in: length */
 {
 	ulint	i;
 	ulint	fold = 0;
diff --git a/innobase/include/ut0ut.h b/innobase/include/ut0ut.h
index 6c173f5cba9..04516535965 100644
--- a/innobase/include/ut0ut.h
+++ b/innobase/include/ut0ut.h
@@ -17,21 +17,6 @@ Created 1/20/1994 Heikki Tuuri
 
 typedef time_t	ib_time_t;
 
-
-/************************************************************
-On the 64-bit Windows we substitute the format string
-%l -> %I64
-because we define ulint as unsigned __int64 and lint as __int64 on Windows,
-and both the Microsoft and Intel C compilers require the format string
-%I64 in that case instead of %l. */
-
-int
-ut_printf(
-/*======*/
-			     /* out: the number of characters written, or
-			     negative in case of an error */
-        const char* format,  /* in: format of prints */
-        ...);                /* in: arguments to be printed */
 /************************************************************
 On the 64-bit Windows we substitute the format string
 %l -> %I64
diff --git a/innobase/os/os0file.c b/innobase/os/os0file.c
index 1a158372563..5f5060c7464 100644
--- a/innobase/os/os0file.c
+++ b/innobase/os/os0file.c
@@ -70,7 +70,7 @@ struct os_aio_slot_struct{
 					bytes */
 	ulint		offset_high;	/* 32 high bits of file offset */
 	os_file_t	file;		/* file where to read or write */
-	char*		name;		/* file name or path */
+	const char*	name;		/* file name or path */
 	ibool		io_already_done;/* used only in simulated aio:
 					TRUE if the physical i/o already
 					made and only the slot message
@@ -415,7 +415,7 @@ os_file_handle_error_no_exit(
 				/* out: TRUE if we should retry the
 				operation */
 	os_file_t	file,	/* in: file pointer */
-	char*		name,	/* in: name of a file or NULL */
+	const char*	name,	/* in: name of a file or NULL */
 	const char*	operation)/* in: operation */
 {
 	ulint	err;
@@ -493,13 +493,15 @@ and '..' items at the start of the directory listing. */
 os_file_dir_t
 os_file_opendir(
 /*============*/
-				/* out: directory stream, NULL if error */
-	char*	dirname,	/* in: directory name; it must not contain
-				a trailing '\' or '/' */
-	ibool	error_is_fatal)	/* in: TRUE if we should treat an error as a
-				fatal error; if we try to open symlinks then
-				we do not wish a fatal error if it happens
-				not to be a directory */
+					/* out: directory stream, NULL if
+					error */
+	const char*	dirname,	/* in: directory name; it must not
+					contain a trailing '\' or '/' */
+	ibool		error_is_fatal)	/* in: TRUE if we should treat an
+					error as a fatal error; if we try to
+					open symlinks then we do not wish a
+					fatal error if it happens not to be
+					a directory */
 {
 	os_file_dir_t		dir;
 #ifdef __WIN__
@@ -585,7 +587,7 @@ os_file_readdir_next_file(
 /*======================*/
 				/* out: 0 if ok, -1 if error, 1 if at the end
 				of the directory */
-	char*		dirname,/* in: directory name or path */
+	const char*	dirname,/* in: directory name or path */
 	os_file_dir_t	dir,	/* in: directory stream */
 	os_file_stat_t*	info)	/* in/out: buffer where the info is returned */
 {
@@ -704,12 +706,12 @@ fail_if_exists arguments is true. */
 ibool
 os_file_create_directory(
 /*=====================*/
-				/* out: TRUE if call succeeds, FALSE on
-				error */
-	char*	pathname,	/* in: directory name as null-terminated
-				string */
-	ibool	fail_if_exists)	/* in: if TRUE, pre-existing directory is
-				treated as an error. */
+					/* out: TRUE if call succeeds,
+					FALSE on error */
+	const char*	pathname,	/* in: directory name as
+					null-terminated string */
+	ibool		fail_if_exists)	/* in: if TRUE, pre-existing directory
+					is treated as an error. */
 {
 #ifdef __WIN__
 	BOOL	rcode;
@@ -746,18 +748,21 @@ A simple function to open or create a file. */
 os_file_t
 os_file_create_simple(
 /*==================*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode,/* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error), or
-                        OS_FILE_CREATE_PATH if new file (if exists, error) and
-                        subdirectories along its path are created (if needed)*/
-	ulint	access_type,/* in: OS_FILE_READ_ONLY or OS_FILE_READ_WRITE */
-	ibool*	success)/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file is
+				opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error), or
+	                        OS_FILE_CREATE_PATH if new file
+				(if exists, error) and subdirectories along
+				its path are created (if needed)*/
+	ulint		access_type,/* in: OS_FILE_READ_ONLY or
+				OS_FILE_READ_WRITE */
+	ibool*		success)/* out: TRUE if succeed, FALSE if error */
 {
 #ifdef __WIN__
 	os_file_t	file;
@@ -882,18 +887,20 @@ A simple function to open or create a file. */
 os_file_t
 os_file_create_simple_no_error_handling(
 /*====================================*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode,/* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error) */
-	ulint	access_type,/* in: OS_FILE_READ_ONLY, OS_FILE_READ_WRITE, or
-			OS_FILE_READ_ALLOW_DELETE; the last option is used by
-			a backup program reading the file */
-	ibool*	success)/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file
+				is opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error) */
+	ulint		access_type,/* in: OS_FILE_READ_ONLY,
+				OS_FILE_READ_WRITE, or
+				OS_FILE_READ_ALLOW_DELETE; the last option is
+				used by a backup program reading the file */
+	ibool*		success)/* out: TRUE if succeed, FALSE if error */
 {
 #ifdef __WIN__
 	os_file_t	file;
@@ -991,25 +998,28 @@ Opens an existing file or creates a new. */
 os_file_t
 os_file_create(
 /*===========*/
-			/* out, own: handle to the file, not defined if error,
-			error number can be retrieved with
-			os_file_get_last_error */
-	char*	name,	/* in: name of the file or path as a null-terminated
-			string */
-	ulint	create_mode, /* in: OS_FILE_OPEN if an existing file is opened
-			(if does not exist, error), or OS_FILE_CREATE if a new
-			file is created (if exists, error), OS_FILE_OVERWRITE
-			if a new is created or an old overwritten,
-			OS_FILE_OPEN_RAW, if a raw device or disk partition
-			should be opened */
-	ulint	purpose,/* in: OS_FILE_AIO, if asynchronous, non-buffered i/o
-			is desired, OS_FILE_NORMAL, if any normal file;
-			NOTE that it also depends on type, os_aio_.. and srv_..
-			variables whether we really use async i/o or
-			unbuffered i/o: look in the function source code for
-			the exact rules */
-	ulint	type,	/* in: OS_DATA_FILE or OS_LOG_FILE */
-	ibool*	success)/* out: TRUE if succeed, FALSE if error */
+				/* out, own: handle to the file, not defined
+				if error, error number can be retrieved with
+				os_file_get_last_error */
+	const char*	name,	/* in: name of the file or path as a
+				null-terminated string */
+	ulint		create_mode,/* in: OS_FILE_OPEN if an existing file
+				is opened (if does not exist, error), or
+				OS_FILE_CREATE if a new file is created
+				(if exists, error),
+				OS_FILE_OVERWRITE if a new file is created
+				or an old overwritten;
+				OS_FILE_OPEN_RAW, if a raw device or disk
+				partition should be opened */
+	ulint		purpose,/* in: OS_FILE_AIO, if asynchronous,
+				non-buffered i/o is desired,
+				OS_FILE_NORMAL, if any normal file;
+				NOTE that it also depends on type, os_aio_..
+				and srv_.. variables whether we really use
+				async i/o or unbuffered i/o: look in the
+				function source code for the exact rules */
+	ulint		type,	/* in: OS_DATA_FILE or OS_LOG_FILE */
+	ibool*		success)/* out: TRUE if succeed, FALSE if error */
 {
 #ifdef __WIN__
 	os_file_t	file;
@@ -1202,8 +1212,8 @@ Deletes a file if it exists. The file has to be closed before calling this. */
 ibool
 os_file_delete_if_exists(
 /*=====================*/
-			/* out: TRUE if success */
-	char*	name)	/* in: file path as a null-terminated string */
+				/* out: TRUE if success */
+	const char*	name)	/* in: file path as a null-terminated string */
 {
 #ifdef __WIN__
 	BOOL	ret;
@@ -1263,8 +1273,8 @@ Deletes a file. The file has to be closed before calling this. */
 ibool
 os_file_delete(
 /*===========*/
-			/* out: TRUE if success */
-	char*	name)	/* in: file path as a null-terminated string */
+				/* out: TRUE if success */
+	const char*	name)	/* in: file path as a null-terminated string */
 {
 #ifdef __WIN__
 	BOOL	ret;
@@ -1327,9 +1337,9 @@ ibool
 os_file_rename(
 /*===========*/
 				/* out: TRUE if success */
-	char*	oldpath,	/* in: old file path as a null-terminated
+	const char*	oldpath,/* in: old file path as a null-terminated
 				string */
-	char*	newpath)	/* in: new file path */
+	const char*	newpath)/* in: new file path */
 {
 #ifdef __WIN__
 	BOOL	ret;
@@ -1340,7 +1350,7 @@ os_file_rename(
 		return(TRUE);
 	}
 
-	os_file_handle_error(NULL, oldpath, "delete");
+	os_file_handle_error(NULL, oldpath, "rename");
 
 	return(FALSE);
 #else
@@ -1516,7 +1526,7 @@ ibool
 os_file_set_size(
 /*=============*/
 				/* out: TRUE if success */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
 	ulint		size,	/* in: least significant 32 bits of file
@@ -1777,7 +1787,7 @@ os_file_pwrite(
 /*===========*/
 				/* out: number of bytes written, -1 if error */
 	os_file_t	file,	/* in: handle to a file */
-	void*		buf,	/* in: buffer from where to write */
+	const void*	buf,	/* in: buffer from where to write */
 	ulint		n,	/* in: number of bytes to write */	
 	ulint		offset,	/* in: least significant 32 bits of file
 				offset where to write */
@@ -2057,10 +2067,10 @@ os_file_write(
 /*==========*/
 				/* out: TRUE if request was
 				successful, FALSE if fail */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
-	void*		buf,	/* in: buffer from which to write */
+	const void*	buf,	/* in: buffer from which to write */
 	ulint		offset,	/* in: least significant 32 bits of file
 				offset where to write */
 	ulint		offset_high, /* in: most significant 32 bits of
@@ -2214,7 +2224,7 @@ ibool
 os_file_status(
 /*===========*/
 				/* out: TRUE if call succeeded */
-	char*		path,	/* in:  pathname of the file */
+	const char*	path,	/* in:  pathname of the file */
 	ibool*		exists,	/* out: TRUE if file exists */
 	os_file_type_t* type)	/* out: type of the file (if it exists) */
 {
@@ -2319,7 +2329,7 @@ os_file_dirname(
 /*============*/
 				/* out, own: directory component of the
 				pathname */
-	char*		path)	/* in: pathname */
+	const char*	path)	/* in: pathname */
 {
 	char*	dir;
 	int 	i, length, last_slash;
@@ -2356,7 +2366,7 @@ os_file_create_subdirs_if_needed(
 /*=============================*/
 				/* out: TRUE if call succeeded
 				   FALSE otherwise */
-	char*		path)	/* in: path name */
+	const char*	path)	/* in: path name */
 {
 	char*		subdir;
 	static char 	rootdir[2] = { OS_FILE_PATH_SEPARATOR, 0 };
@@ -2753,7 +2763,7 @@ os_aio_array_reserve_slot(
 	void*		message2,/* in: message to be passed along with
 				the aio operation */
 	os_file_t	file,	/* in: file handle */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	void*		buf,	/* in: buffer where to read or from which
 				to write */
@@ -3000,7 +3010,7 @@ os_aio(
 				because i/os are not actually handled until
 				all have been posted: use with great
 				caution! */
-	char*		name,	/* in: name of the file or path as a
+	const char*	name,	/* in: name of the file or path as a
 				null-terminated string */
 	os_file_t	file,	/* in: handle to a file */
 	void*		buf,	/* in: buffer where to read or from which
@@ -3543,6 +3553,7 @@ consecutive_loop:
 	if (n_consecutive == 1) {
 		/* We can use the buffer of the i/o request */
 		combined_buf = slot->buf;
+		combined_buf2 = NULL;
 	} else {
 		combined_buf2 = ut_malloc(total_len + UNIV_PAGE_SIZE);
 
@@ -3638,7 +3649,7 @@ consecutive_loop:
 		}
 	}
 
-	if (n_consecutive > 1) {
+	if (combined_buf2) {
 		ut_free(combined_buf2);
 	}
 
diff --git a/innobase/os/os0sync.c b/innobase/os/os0sync.c
index 7cbaf1f5123..c48c44a4c70 100644
--- a/innobase/os/os0sync.c
+++ b/innobase/os/os0sync.c
@@ -109,9 +109,9 @@ must be reset explicitly by calling sync_os_reset_event. */
 os_event_t
 os_event_create(
 /*============*/
-			/* out: the event handle */
-	char*	name)	/* in: the name of the event, if NULL
-			the event is created without a name */
+				/* out: the event handle */
+	const char*	name)	/* in: the name of the event, if NULL
+				the event is created without a name */
 {
 #ifdef __WIN__
         os_event_t event;
@@ -166,9 +166,9 @@ reset when a single thread is released. Works only in Windows. */
 os_event_t
 os_event_create_auto(
 /*=================*/
-			/* out: the event handle */
-	char*	name)	/* in: the name of the event, if NULL
-			the event is created without a name */
+				/* out: the event handle */
+	const char*	name)	/* in: the name of the event, if NULL
+				the event is created without a name */
 {
         os_event_t event;
 
@@ -430,9 +430,9 @@ mutex semaphore of InnoDB itself (mutex_t) should be used where possible. */
 os_mutex_t
 os_mutex_create(
 /*============*/
-			/* out: the mutex handle */
-	char*	name)	/* in: the name of the mutex, if NULL
-			the mutex is created without a name */
+				/* out: the mutex handle */
+	const char*	name)	/* in: the name of the mutex, if NULL
+				the mutex is created without a name */
 {
 #ifdef __WIN__
 	HANDLE		mutex;
diff --git a/innobase/pars/pars0pars.c b/innobase/pars/pars0pars.c
index 7e835d9ada1..12451b4d94d 100644
--- a/innobase/pars/pars0pars.c
+++ b/innobase/pars/pars0pars.c
@@ -1729,8 +1729,8 @@ Parses an SQL string returning the query graph. */
 que_t*
 pars_sql(
 /*=====*/
-			/* out, own: the query graph */
-	char*	str)	/* in: SQL string */
+				/* out, own: the query graph */
+	const char*	str)	/* in: SQL string */
 {
 	sym_node_t*	sym_node;
 	mem_heap_t*	heap;
diff --git a/innobase/pars/pars0sym.c b/innobase/pars/pars0sym.c
index 1a0608ed142..194e6677183 100644
--- a/innobase/pars/pars0sym.c
+++ b/innobase/pars/pars0sym.c
@@ -217,13 +217,10 @@ sym_tab_add_id(
 
 	node->common.type = QUE_NODE_SYMBOL;
 	
-	node->name = mem_heap_alloc(sym_tab->heap, len + 1);
 	node->resolved = FALSE;
 	node->indirection = NULL;
 
-	ut_memcpy(node->name, name, len);
-	node->name[len] = '\0';
-
+	node->name = mem_heap_strdupl(sym_tab->heap, name, len + 1);
 	node->name_len = len;
 
 	UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node);
diff --git a/innobase/row/row0mysql.c b/innobase/row/row0mysql.c
index 154da11da58..61be3a7248e 100644
--- a/innobase/row/row0mysql.c
+++ b/innobase/row/row0mysql.c
@@ -1686,15 +1686,16 @@ constraints which reference this table are ok. */
 int
 row_table_add_foreign_constraints(
 /*==============================*/
-				/* out: error code or DB_SUCCESS */
-	trx_t*	trx,		/* in: transaction */
-	char*	sql_string,	/* in: table create statement where
-				foreign keys are declared like:
+					/* out: error code or DB_SUCCESS */
+	trx_t*		trx,		/* in: transaction */
+	const char*	sql_string,	/* in: table create statement where
+					foreign keys are declared like:
 				FOREIGN KEY (a, b) REFERENCES table2(c, d),
-				table2 can be written also with the database
-				name before it: test.table2 */
-	char*	name)		/* in: table full name in the normalized form
-				database_name/table_name */
+					table2 can be written also with the
+					database name before it: test.table2 */
+	const char*	name)		/* in: table full name in the
+					normalized form
+					database_name/table_name */
 {
 	ulint	err;
 
@@ -1940,9 +1941,9 @@ discard ongoing operations. */
 int
 row_discard_tablespace_for_mysql(
 /*=============================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx)	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx)	/* in: transaction handle */
 {
 	dulint		new_id;
 	dict_table_t*	table;
@@ -2071,9 +2072,9 @@ of the table in the data dictionary. */
 int
 row_import_tablespace_for_mysql(
 /*============================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx)	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx)	/* in: transaction handle */
 {
 	dict_table_t*	table;
 	ibool		success;
@@ -2177,10 +2178,10 @@ the corresponding monitor output by the master thread. */
 int
 row_drop_table_for_mysql(
 /*=====================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: table name */
-	trx_t*	trx,	/* in: transaction handle */
-	ibool	drop_db)/* in: TRUE=dropping whole database */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: table name */
+	trx_t*		trx,	/* in: transaction handle */
+	ibool		drop_db)/* in: TRUE=dropping whole database */
 {
 	dict_foreign_t*	foreign;
 	dict_table_t*	table;
@@ -2519,9 +2520,9 @@ Drops a database for MySQL. */
 int
 row_drop_database_for_mysql(
 /*========================*/
-			/* out: error code or DB_SUCCESS */
-	char*	name,	/* in: database name which ends to '/' */
-	trx_t*	trx)	/* in: transaction handle */
+				/* out: error code or DB_SUCCESS */
+	const char*	name,	/* in: database name which ends to '/' */
+	trx_t*		trx)	/* in: transaction handle */
 {
         dict_table_t* table;
 	char*	table_name;
@@ -2611,10 +2612,10 @@ Renames a table for MySQL. */
 int
 row_rename_table_for_mysql(
 /*=======================*/
-				/* out: error code or DB_SUCCESS */
-	char*	old_name,	/* in: old table name */
-	char*	new_name,	/* in: new table name */
-	trx_t*	trx)		/* in: transaction handle */
+					/* out: error code or DB_SUCCESS */
+	const char*	old_name,	/* in: old table name */
+	const char*	new_name,	/* in: new table name */
+	trx_t*		trx)		/* in: transaction handle */
 {
 	dict_table_t*	table;
 	que_thr_t*	thr;
diff --git a/innobase/row/row0sel.c b/innobase/row/row0sel.c
index 47d61459d47..ff9b697c02f 100644
--- a/innobase/row/row0sel.c
+++ b/innobase/row/row0sel.c
@@ -3585,11 +3585,11 @@ consistent read result, or store it to the query cache. */
 ibool
 row_search_check_if_query_cache_permitted(
 /*======================================*/
-				/* out: TRUE if storing or retrieving from
-				the query cache is permitted */
-	trx_t*	trx,		/* in: transaction object */
-	char*	norm_name)	/* in: concatenation of database name, '/'
-				char, table name */
+					/* out: TRUE if storing or retrieving
+					from the query cache is permitted */
+	trx_t*		trx,		/* in: transaction object */
+	const char*	norm_name)	/* in: concatenation of database name,
+					'/' char, table name */
 {
 	dict_table_t*	table;
 	ibool		ret 	= FALSE;
diff --git a/innobase/trx/trx0roll.c b/innobase/trx/trx0roll.c
index 5c01a5371aa..e2e4f24b82e 100644
--- a/innobase/trx/trx0roll.c
+++ b/innobase/trx/trx0roll.c
@@ -200,7 +200,7 @@ trx_rollback_to_savepoint_for_mysql(
 						DB_NO_SAVEPOINT,
 						otherwise DB_SUCCESS */
 	trx_t*		trx,			/* in: transaction handle */
-	char*		savepoint_name,		/* in: savepoint name */
+	const char*	savepoint_name,		/* in: savepoint name */
 	ib_longlong*	mysql_binlog_cache_pos)	/* out: the MySQL binlog cache
 						position corresponding to this
 						savepoint; MySQL needs this
@@ -265,7 +265,7 @@ trx_savepoint_for_mysql(
 /*====================*/
 						/* out: always DB_SUCCESS */
 	trx_t*		trx,			/* in: transaction handle */
-	char*		savepoint_name,		/* in: savepoint name */
+	const char*	savepoint_name,		/* in: savepoint name */
 	ib_longlong	binlog_cache_pos)	/* in: MySQL binlog cache
 						position corresponding to this
 						connection at the time of the
diff --git a/innobase/trx/trx0sys.c b/innobase/trx/trx0sys.c
index ef068d8d523..87abcbefa52 100644
--- a/innobase/trx/trx0sys.c
+++ b/innobase/trx/trx0sys.c
@@ -569,7 +569,7 @@ replication has proceeded. */
 void
 trx_sys_update_mysql_binlog_offset(
 /*===============================*/
-	char*		file_name,/* in: MySQL log file name */
+	const char*	file_name,/* in: MySQL log file name */
 	ib_longlong	offset,	/* in: position in that log file */
 	ulint		field,	/* in: offset of the MySQL log info field in
 				the trx sys header */