Merge from mysql-5.1 to mysql-5.5.

storage/innobase/dict/dict0crea.c

@@ -42,6 +42,7 @@ Created 1/8/1996 Heikki Tuuri
 #include "trx0roll.h"
 #include "usr0sess.h"
 #include "ut0vec.h"
+#include "ha_prototypes.h"
 
 /*****************************************************************//**
 Based on a table object, this function builds the entry to be inserted
@@ -1427,12 +1428,20 @@ dict_create_add_foreign_to_dictionary(
 	pars_info_t*	info = pars_info_create();
 
 	if (foreign->id == NULL) {
+		char*	stripped_name;
 		/* Generate a new constraint id */
 		ulint	namelen	= strlen(table->name);
 		char*	id	= mem_heap_alloc(foreign->heap, namelen + 20);
 		/* no overflow if number < 1e13 */
 		sprintf(id, "%s_ibfk_%lu", table->name, (ulong) (*id_nr)++);
 		foreign->id = id;
+
+		stripped_name = strchr(foreign->id, '/') + 1;
+		if (innobase_check_identifier_length(stripped_name)) {
+			fprintf(stderr, "InnoDB: Generated foreign key "
+				"name (%s) is too long\n", foreign->id);
+			return(DB_IDENTIFIER_TOO_LONG);
+		}
 	}
 
 	pars_info_add_str_literal(info, "id", foreign->id);

storage/innobase/dict/dict0dict.c

@@ -4679,6 +4679,7 @@ dict_print_info_on_foreign_key_in_create_format(
 	dict_foreign_t*	foreign,	/*!< in: foreign key constraint */
 	ibool		add_newline)	/*!< in: whether to add a newline */
 {
+	char		constraint_name[MAX_TABLE_NAME_LEN];
 	const char*	stripped_id;
 	ulint	i;
 
@@ -4700,7 +4701,9 @@ dict_print_info_on_foreign_key_in_create_format(
 	}
 
 	fputs(" CONSTRAINT ", file);
-	ut_print_name(file, trx, FALSE, stripped_id);
+	innobase_convert_from_id(&my_charset_filename, constraint_name,
+				 stripped_id, MAX_TABLE_NAME_LEN);
+	ut_print_name(file, trx, FALSE, constraint_name);
 	fputs(" FOREIGN KEY (", file);
 
 	for (i = 0;;) {

storage/innobase/handler/ha_innodb.cc

@@ -1075,6 +1075,9 @@ convert_error_code_to_mysql(
 		return(HA_ERR_UNDO_REC_TOO_BIG);
 	case DB_OUT_OF_MEMORY:
 		return(HA_ERR_OUT_OF_MEM);
+	case DB_IDENTIFIER_TOO_LONG:
+		my_error(ER_TOO_LONG_IDENT, MYF(0));
+		return(HA_ERR_INTERNAL_ERROR);
 	}
 }
 
@@ -1155,6 +1158,37 @@ innobase_convert_from_table_id(
 	strconvert(cs, from, &my_charset_filename, to, (uint) len, &errors);
 }
 
+/**********************************************************************
+Check if the length of the identifier exceeds the maximum allowed.
+The input to this function is an identifier in charset my_charset_filename.
+return true when length of identifier is too long. */
+extern "C" UNIV_INTERN
+my_bool
+innobase_check_identifier_length(
+/*=============================*/
+	const char*	id)	/* in: identifier to check.  it must belong
+				to charset my_charset_filename */
+{
+	char		tmp[MAX_TABLE_NAME_LEN + 10];
+	uint		errors;
+	uint		len;
+	int		well_formed_error = 0;
+	CHARSET_INFO*	cs1 = &my_charset_filename;
+	CHARSET_INFO*	cs2 = thd_charset(current_thd);
+
+	len = strconvert(cs1, id, cs2, tmp, MAX_TABLE_NAME_LEN + 10, &errors);
+
+	uint res = cs2->cset->well_formed_len(cs2, tmp, tmp + len,
+					      NAME_CHAR_LEN,
+					      &well_formed_error);
+
+	if (well_formed_error || res != len) {
+		my_error(ER_TOO_LONG_IDENT, MYF(0), tmp);
+		return(true);
+	}
+	return(false);
+}
+
 /******************************************************************//**
 Converts an identifier to UTF-8. */
 extern "C" UNIV_INTERN

storage/innobase/include/db0err.h

@@ -114,6 +114,7 @@ enum db_err {
 	DB_UNDO_RECORD_TOO_BIG,		/* the undo log record is too big */
 	DB_TABLE_IN_FK_CHECK,		/* table is being used in foreign
 					key check */
+	DB_IDENTIFIER_TOO_LONG,		/* Identifier name too long */
 
 	/* The following are partial failure codes */
 	DB_FAIL = 1000,

storage/innobase/include/ha_prototypes.h

@@ -296,4 +296,15 @@ ulint
 innobase_get_lower_case_table_names(void);
 /*=====================================*/
 
+/**********************************************************************
+Check if the length of the identifier exceeds the maximum allowed.
+The input to this function is an identifier in charset my_charset_filename.
+return true when length of identifier is too long. */
+UNIV_INTERN
+my_bool
+innobase_check_identifier_length(
+/*=============================*/
+	const char*	id);	/* in: identifier to check.  it must belong
+				to charset my_charset_filename */
+
 #endif

storage/innobase/ut/ut0ut.c

@@ -728,6 +728,8 @@ ut_strerr(
 		return("End of index");
 	case DB_TABLE_IN_FK_CHECK:
 		return("Table is being used in foreign key check");
+	case DB_IDENTIFIER_TOO_LONG:
+		return("Identifier name is too long");
 	/* do not add default: in order to produce a warning if new code
 	is added to the enum but not added here */
 	}