made IM to work with --defaults-file smoothly

BitKeeper/deleted/.del-my.cnf~9322f78f12eb2f3c:
  Delete: support-files/my.cnf
include/my_sys.h:
  fixed prototype to reflect changes in default.c
mysys/default.c:
  use my_search_option_files instead of process_default_option_files. This is used from the IM.
server-tools/instance-manager/instance.cc:
  added parameter to complete_initialization(). this ine marks whether we are creating the only instance
  (for instance, when no config file given)
server-tools/instance-manager/instance.h:
  prototype changed
server-tools/instance-manager/instance_map.cc:
  Now call my_search_option_files to work smootly with --defaults-file
server-tools/instance-manager/instance_map.h:
  added first_option member. This is set of mysqlmanager was started with --defaults-file or with
  --extra-defaults-file to be passed to the my_search_option_files
server-tools/instance-manager/instance_options.cc:
  if we have only one instance, name the pidfile `hostname`.pid for compatibility reasons.
server-tools/instance-manager/instance_options.h:
  header fixed according to .cc
server-tools/instance-manager/manager.cc:
  prototype fixed
server-tools/instance-manager/options.cc:
  save --defaults-file of --defaults-extra-file to pass it to my_search_option_files
server-tools/instance-manager/options.h:
  added an optin to save --default-file options
support-files/Makefile.am:
  revert changes

include/my_sys.h

@@ -531,7 +531,7 @@ typedef uint32 ha_checksum;
 
 /* Define the type of function to be passed to process_default_option_files */
 typedef int (*Process_option_func)(void *ctx, const char *group_name,
-                                    const char *option);
+                                   const char *option);
 
 #include <my_alloc.h>
 
@@ -776,9 +776,9 @@ extern void get_defaults_files(int argc, char **argv,
                                char **defaults, char **extra_defaults);
 extern int load_defaults(const char *conf_file, const char **groups,
 			 int *argc, char ***argv);
-extern int process_default_option_files(const char *conf_file,
-                                        Process_option_func func,
-                                        void *func_ctx);
+extern int my_search_option_files(const char *conf_file, int *argc,
+                                  char ***argv, uint *args_used,
+                                  Process_option_func func, void *func_ctx);
 extern void free_defaults(char **argv);
 extern void print_defaults(const char *conf_file, const char **groups);
 extern my_bool my_compress(byte *, ulong *, ulong *);

mysys/default.c

@@ -83,7 +83,7 @@ static char *remove_end_comment(char *ptr);
   Process config files in default directories.
 
   SYNOPSIS
-  search_files()
+  my_search_option_files()
   conf_file                   Basename for configuration file to search for.
                               If this is a path, then only this file is read.
   argc                        Pointer to argc of original program
@@ -103,13 +103,13 @@ static char *remove_end_comment(char *ptr);
     1  given cinf_file doesn't exist
 */
 
-static int search_files(const char *conf_file, int *argc, char ***argv,
+int my_search_option_files(const char *conf_file, int *argc, char ***argv,
                         uint *args_used, Process_option_func func,
                         void *func_ctx)
 {
   const char **dirs, *forced_default_file;
   int error= 0;
-  DBUG_ENTER("search_files");
+  DBUG_ENTER("my_search_option_files");
 
   /* Check if we want to force the use a specific default file */
   get_defaults_files(*argc, *argv,
@@ -180,40 +180,6 @@ err:
 }
 
 
-/*
-  Simplified version of search_files (no argv, argc to process).
-
-  SYNOPSIS
-  process_default_option_files()
-  conf_file                   Basename for configuration file to search for.
-                              If this is a path, then only this file is read.
-  func                        Pointer to the function to process options
-  func_ctx                    It's context. Usually it is the structure to
-                              store additional options.
-
-  DESCRIPTION
-
-  Often we want only to get options from default config files. In this case we
-  don't want to provide any argc and argv parameters. This function is a
-  simplified variant of search_files which allows us to forget about
-  argc, argv.
-
-  RETURN
-    0  ok
-    1  given cinf_file doesn't exist
-*/
-
-int process_default_option_files(const char *conf_file,
-                                 Process_option_func func, void *func_ctx)
-{
-  int argc= 1;
-  /* this is a dummy variable for search_files() */
-  uint args_used;
-
-  return search_files(conf_file, &argc, NULL, &args_used, func, func_ctx);
-}
-
-
 /*
   The option handler for load_defaults.
 
@@ -363,7 +329,7 @@ int load_defaults(const char *conf_file, const char **groups,
   ctx.args= &args;
   ctx.group= &group;
   
-  error= search_files(conf_file, argc, argv, &args_used,
+  error= my_search_option_files(conf_file, argc, argv, &args_used,
                       handle_default_option, (void *) &ctx);
   /*
     Here error contains <> 0 only if we have a fully specified conf_file

server-tools/instance-manager/instance.cc

@@ -297,8 +297,9 @@ int Instance::init(const char *name_arg)
 
 
 int Instance::complete_initialization(Instance_map *instance_map_arg,
-                                      const char *mysqld_path)
+                                      const char *mysqld_path,
+                                      int only_instance)
 {
   instance_map= instance_map_arg;
-  return options.complete_initialization(mysqld_path);
+  return options.complete_initialization(mysqld_path, only_instance);
 }

server-tools/instance-manager/instance.h

@@ -35,7 +35,7 @@ public:
   ~Instance();
   int init(const char *name);
   int complete_initialization(Instance_map *instance_map_arg,
-                              const char *mysqld_path);
+                              const char *mysqld_path, int only_instance= 0);
 
   bool is_running();
   int start();

server-tools/instance-manager/instance_map.cc

@@ -110,10 +110,10 @@ err_new_instance:
 C_MODE_END
 
 
-Instance_map::Instance_map(const char *default_mysqld_path_arg)
+Instance_map::Instance_map(const char *default_mysqld_path_arg,
+                           const char *first_option_arg):
+mysqld_path(default_mysqld_path_arg), first_option(first_option_arg)
 {
-  mysqld_path= default_mysqld_path_arg;
-
   pthread_mutex_init(&LOCK_instance_map, 0);
 }
 
@@ -193,9 +193,10 @@ int Instance_map::complete_initialization()
 
     /*
       After an instance have been added to the instance_map,
-      hash_free should handle it's deletion.
+      hash_free should handle it's deletion => goto err, not
+      err_instance.
     */
-    if (instance->complete_initialization(this, mysqld_path))
+    if (instance->complete_initialization(this, mysqld_path, 1))
       goto err;
   }
   else
@@ -220,7 +221,25 @@ err_instance:
 
 int Instance_map::load()
 {
-  if (process_default_option_files("my", process_option, (void *) this) ||
+  int argc= 1;
+  /* this is a dummy variable for search_option_files() */
+  uint args_used= 0;
+  const char *argv_options[3];
+  char **argv= (char **) &argv_options;
+
+  /* the name of the program may be orbitrary here in fact */
+  argv_options[0]= "mysqlmanager";
+  if (first_option != NULL)
+  {
+    argc= 2;
+    argv_options[1]= first_option;
+    argv_options[2]= '\0';
+  }
+  else
+    argv_options[1]= '\0';
+
+  if (my_search_option_files("my", &argc, (char ***) &argv, &args_used,
+                             process_option, (void *) this) ||
       complete_initialization())
     return 1;
 

server-tools/instance-manager/instance_map.h

@@ -64,7 +64,8 @@ public:
   int unlock();
   int init();
 
-  Instance_map(const char *default_mysqld_path_arg);
+  Instance_map(const char *default_mysqld_path_arg,
+               const char *first_option_arg);
   ~Instance_map();
 
   /* loads options from config files */
@@ -79,6 +80,7 @@ public:
   Guardian_thread *guardian;
 
 private:
+  const char *first_option;
   enum { START_HASH_SIZE = 16 };
   pthread_mutex_t LOCK_instance_map;
   HASH hash;

server-tools/instance-manager/instance_options.cc

@@ -123,7 +123,8 @@ pid_t Instance_options::get_pid()
 }
 
 
-int Instance_options::complete_initialization(const char *default_path)
+int Instance_options::complete_initialization(const char *default_path,
+                                              int only_instance)
 {
   const char *tmp;
 
@@ -140,11 +141,23 @@ int Instance_options::complete_initialization(const char *default_path)
   {
     char pidfilename[MAX_PATH_LEN];
     char hostname[MAX_PATH_LEN];
+
+    /*
+      If we created only one istance [mysqld], because no config. files were
+      found, we would like to model mysqld pid file values.
+    */
     if (!gethostname(hostname, sizeof(hostname) - 1))
-      strxnmov(pidfilename, MAX_PATH_LEN - 1, "--pid-file=", hostname, "-",
-               instance_name, ".pid", NullS);
+      (only_instance == 0) ?
+      strxnmov(pidfilename, MAX_PATH_LEN - 1, "--pid-file=", instance_name, "-",
+               hostname, ".pid", NullS):
+      strxnmov(pidfilename, MAX_PATH_LEN - 1, "--pid-file=", hostname,
+               ".pid", NullS);
+
     else
+      (only_instance == 0) ?
       strxnmov(pidfilename, MAX_PATH_LEN - 1, "--pid-file=", instance_name,
+               ".pid", NullS):
+      strxnmov(pidfilename, MAX_PATH_LEN - 1, "--pid-file=", "mysql",
                ".pid", NullS);
 
     add_option(pidfilename);

server-tools/instance-manager/instance_options.h

@@ -43,7 +43,7 @@ public:
   {}
   ~Instance_options();
   /* fills in argv */
-  int complete_initialization(const char *default_path);
+  int complete_initialization(const char *default_path, int only_instance);
 
   int add_option(const char* option);
   int init(const char *instance_name_arg);

server-tools/instance-manager/manager.cc

@@ -67,7 +67,7 @@ void manager(const Options &options)
   */
 
   User_map user_map;
-  Instance_map instance_map(options.default_mysqld_path);
+  Instance_map instance_map(options.default_mysqld_path, options.first_option);
   Guardian_thread guardian_thread(thread_registry,
                                   &instance_map,
                                   options.monitoring_interval);

server-tools/instance-manager/options.cc

@@ -37,6 +37,7 @@ const char *Options::pid_file_name= QUOTE(DEFAULT_PID_FILE_NAME);
 const char *Options::socket_file_name= QUOTE(DEFAULT_SOCKET_FILE_NAME);
 const char *Options::password_file_name= QUOTE(DEFAULT_PASSWORD_FILE_NAME);
 const char *Options::default_mysqld_path= QUOTE(DEFAULT_MYSQLD_PATH);
+const char *Options::first_option= 0;           /* No default value */
 const char *Options::bind_address= 0;           /* No default value */
 const char *Options::user= 0;                   /* No default value */
 uint Options::monitoring_interval= DEFAULT_MONITORING_INTERVAL;
@@ -210,10 +211,18 @@ C_MODE_END
 int Options::load(int argc, char **argv)
 {
   int rc;
+
+  if (argc >= 2)
+  {
+    if (is_prefix(argv[1],"--defaults-file=") ||
+        is_prefix(argv[1],"--defaults-extra-file="))
+      Options::first_option= argv[1];
+  }
+
   /* config-file options are prepended to command-line ones */
   load_defaults("my", default_groups, &argc, &argv);
 
-  if (rc= handle_options(&argc, &argv, my_long_options, get_one_option))
+  if ((rc= handle_options(&argc, &argv, my_long_options, get_one_option)) != 0)
     return rc;
   Options::saved_argv= argv;
   return 0;

server-tools/instance-manager/options.h

@@ -35,6 +35,8 @@ struct Options
   static const char *password_file_name;
   static const char *default_mysqld_path;
   static const char *user;
+  /* the option which should be passed to process_default_option_files */
+  static const char *first_option;
   static uint monitoring_interval;
   static uint port_number;
   static const char *bind_address;

support-files/Makefile.am

@@ -19,7 +19,6 @@
 
 EXTRA_DIST =		mysql.spec.sh \
 			my-small.cnf.sh \
-			my.cnf \
 			my-medium.cnf.sh \
 			my-large.cnf.sh \
 			my-huge.cnf.sh \

support-files/my.cnf

-[mysqld]
-port=3307