Bug #1039: tmpdir and datadir not available via @@ system variable syntax

Bug #19606: ssl variables are not displayed in show variables
Bug #19616: log_queries_not_using_indexes  is not listed in show variables

  Make basedir, datadir, tmpdir, log_queries_not_using_indexes, ssl_ca,
  ssl_capath, ssl_cert, ssl_cipher, and ssl_key all available both from
  SHOW VARIABLES and as @@variables.

  As a side-effect of this change, log_queries_not_using_indexes can
  be changed at runtime (but only globally, not per-connection).


include/sslopt-longopts.h:
  Put options in alphabetical order
include/sslopt-vars.h:
  Allow define of SSL_VARS_NOT_STATIC to prevent variables from not being
  made static.
mysql-test/r/variables.result:
  Add new results
mysql-test/t/variables.test:
  Add new regression tests
sql/mysql_priv.h:
  Add extern for opt_log_queries_not_using_indexes
sql/mysqld.cc:
  Handle opt_log_queries_not_using_indexes as extern, and define
  SSL_VARS_NO_STATIC so they can be accessed outside of mysqld.cc
sql/set_var.cc:
  Handle basedir, datadir, tmpdir, log_queries_not_using_indexes, and
  various ssl settings so that they are accessible as server variables
  and listed in SHOW VARIABLES.
sql/set_var.h:
  Add new sys_var_constr_str_ptr class, for when we have a system variable
  that is only set via the command-line that is a pointer to a string.

1 files changed, 29 insertions, 0 deletions

diff --git a/sql/set_var.h b/sql/set_var.h
index 646a578ca36..8e5a94b1e1b 100644
--- a/sql/set_var.h
+++ b/sql/set_var.h
@@ -222,6 +222,35 @@ public:
 };
 
 
+class sys_var_const_str_ptr :public sys_var
+{
+public:
+  char **value;					// Pointer to const value
+  sys_var_const_str_ptr(const char *name_arg, char **value_arg)
+    :sys_var(name_arg),value(value_arg)
+  {}
+  bool check(THD *thd, set_var *var)
+  {
+    return 1;
+  }
+  bool update(THD *thd, set_var *var)
+  {
+    return 1;
+  }
+  SHOW_TYPE type() { return SHOW_CHAR; }
+  byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base)
+  {
+    return (byte*) *value;
+  }
+  bool check_update_type(Item_result type)
+  {
+    return 1;
+  }
+  bool check_default(enum_var_type type) { return 1; }
+  bool is_readonly() const { return 1; }
+};
+
+
 class sys_var_enum :public sys_var
 {
   uint	*value;