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Manual merge from mysql-5.1 for Bug#11764168 (56976: Severe denial

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of service in prepared statements).
This commit is contained in:
Dmitry Shulga
2011-03-15 18:57:36 +06:00
parent 14df359b39 6c2f5e306c
commit 10f5982ee5
12 changed files with 161 additions and 11 deletions
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10
sql/sys_vars.cc
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@ -1182,6 +1182,16 @@ static Sys_var_harows Sys_sql_max_join_size(
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
ON_UPDATE(fix_max_join_size), DEPRECATED(70000, 0));
static Sys_var_ulong Sys_max_long_data_size(
"max_long_data_size",
"The maximum BLOB length to send to server from "
"mysql_send_long_data API. Deprecated option; "
"use max_allowed_packet instead.",
READ_ONLY GLOBAL_VAR(max_long_data_size),
CMD_LINE(REQUIRED_ARG, OPT_MAX_LONG_DATA_SIZE),
VALID_RANGE(1024, UINT_MAX32), DEFAULT(1024*1024),
BLOCK_SIZE(1));
static PolyLock_mutex PLock_prepared_stmt_count(&LOCK_prepared_stmt_count);
static Sys_var_ulong Sys_max_prepared_stmt_count(
"max_prepared_stmt_count",