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Fix for

Browse Source 
bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
triggers
and
#41385: Crash when attempting to repair a #mysql50# upgraded table
with triggers.

Problem:
1. trigger code didn't assume a table name may have
a "#mysql50#" prefix, that may lead to a failing ASSERT().
2. "ALTER DATABASE ... UPGRADE DATA DIRECTORY NAME" failed
for databases with "#mysql50#" prefix if any trigger.
3. mysqlcheck --fix-table-name didn't use UTF8 as a default
character set that resulted in (parsing) errors for tables with
non-latin symbols in their names and definitions of triggers.

Fix:
1. properly handle table/database names with "#mysql50#" prefix.
2. handle --default-character-set mysqlcheck option;
if mysqlcheck is launched with --fix-table-name or --fix-db-name
set default character set to UTF8 if no --default-character-set
option given.

Note: if given --fix-table-name or --fix-db-name option,
without --default-character-set mysqlcheck option
default character set is UTF8.
This commit is contained in:
Ramil Kalimullin
2009-01-14 18:50:51 +04:00
parent 2c1cf1a0ed
commit 347762946e
7 changed files with 241 additions and 40 deletions
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31
sql/sql_table.cc
View File

@ -114,6 +114,30 @@ uint filename_to_tablename(const char *from, char *to, uint to_length)
}
/**
Check if given string begins with "#mysql50#" prefix, cut it if so.
@param from string to check and cut
@param to[out] buffer for result string
@param to_length its size
@retval
0 no prefix found
@retval
non-0 result string length
*/
uint check_n_cut_mysql50_prefix(const char *from, char *to, uint to_length)
{
if (from[0] == '#' &&
!strncmp(from, MYSQL50_TABLE_NAME_PREFIX,
MYSQL50_TABLE_NAME_PREFIX_LENGTH))
return (uint) (strmake(to, from + MYSQL50_TABLE_NAME_PREFIX_LENGTH,
to_length - 1) - to);
return 0;
}
/*
Translate a table name to a file name (WL #1324).
@ -133,11 +157,8 @@ uint tablename_to_filename(const char *from, char *to, uint to_length)
DBUG_ENTER("tablename_to_filename");
DBUG_PRINT("enter", ("from '%s'", from));
if (from[0] == '#' && !strncmp(from, MYSQL50_TABLE_NAME_PREFIX,
MYSQL50_TABLE_NAME_PREFIX_LENGTH))
DBUG_RETURN((uint) (strmake(to, from+MYSQL50_TABLE_NAME_PREFIX_LENGTH,
to_length-1) -
(from + MYSQL50_TABLE_NAME_PREFIX_LENGTH)));
if ((length= check_n_cut_mysql50_prefix(from, to, to_length)))
DBUG_RETURN(length);
length= strconvert(system_charset_info, from,
&my_charset_filename, to, to_length, &errors);
if (check_if_legal_tablename(to) &&