* stdio-common/printf.h (struct printf_info): Add user element.

	New types printf_arginfo_size_function, printf_va_arg_function.
	Declare register_printf_specifier, register_printf_modifier,
	register_printf_type.
	* stdio-common/printf-parse.h (struct printf_spec): Add size element.
	(union printf_arg): Add pa_user element.
	Adjust __printf_arginfo_table type.
	Add __printf_va_arg_table, __printf_modifier_table,
	__handle_registered_modifier_mb, and __handle_registered_modifier_wc
	declarations.
	* stdio-common/printf-parsemb.c: Recognize registered modifiers.
	If registered arginfo call failed try normal specifier.
	* stdio-common/printf-prs.c: Pass additional parameter to arginfo
	function.
	* stdio-common/Makefile (routines): Add reg-modifier and reg-type.
	* stdio-common/Versions: Export register_printf_modifier,
	register_printf_type, and register_printf_specifier for GLIBC_2.10.
	* stdio-common/reg-modifier.c: New file.
	* stdio-common/reg-type.c: New file.
	* stdio-common/reg-printf.c (__register_printf_specifier): New
	function.  Mostly the old __register_printf_function function but
	uses locking and type of third parameter changed.
	(__register_printf_function): Implement using
	__register_printf_specifier.
	* stdio-common/vfprintf.c (vfprintf): Collect argument sizes in
	calls to arginfo functions.  Allocate enough memory for user-defined
	types.  Call new va_arg functions to get user-defined types.
	Try installed handlers even for existing format specifiers first.

1 files changed, 38 insertions, 8 deletions

diff --git a/stdio-common/reg-printf.c b/stdio-common/reg-printf.c
index dbb6234e5f..b5cab679de 100644
--- a/stdio-common/reg-printf.c
+++ b/stdio-common/reg-printf.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,1996,1997,2002,2003,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1991,1996,1997,2002-2004,2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -21,21 +21,28 @@
 #include <printf.h>
 #include <stddef.h>
 #include <stdlib.h>
+#include <bits/libc-lock.h>
+
 
 /* Array of functions indexed by format character.  */
-libc_freeres_ptr (printf_arginfo_function **__printf_arginfo_table)
+libc_freeres_ptr (printf_arginfo_size_function **__printf_arginfo_table)
   attribute_hidden;
 printf_function **__printf_function_table attribute_hidden;
 
+__libc_lock_define_initialized (static, lock)
+
+int __register_printf_specifier (int, printf_function,
+				 printf_arginfo_size_function);
 int __register_printf_function (int, printf_function,
-				printf_arginfo_function) __THROW;
+				printf_arginfo_function);
+
 
 /* Register FUNC to be called to format SPEC specifiers.  */
 int
-__register_printf_function (spec, converter, arginfo)
+__register_printf_specifier (spec, converter, arginfo)
      int spec;
      printf_function converter;
-     printf_arginfo_function arginfo;
+     printf_arginfo_size_function arginfo;
 {
   if (spec < 0 || spec > (int) UCHAR_MAX)
     {
@@ -43,12 +50,19 @@ __register_printf_function (spec, converter, arginfo)
       return -1;
     }
 
+  int result = 0;
+  __libc_lock_lock (lock);
+
   if (__printf_function_table == NULL)
     {
-      __printf_arginfo_table = (printf_arginfo_function **)
+      __printf_arginfo_table = (printf_arginfo_size_function **)
 	calloc (UCHAR_MAX + 1, sizeof (void *) * 2);
       if (__printf_arginfo_table == NULL)
-	return -1;
+	{
+	  result = -1;
+	  goto out;
+	}
+
       __printf_function_table = (printf_function **)
 	(__printf_arginfo_table + UCHAR_MAX + 1);
     }
@@ -56,6 +70,22 @@ __register_printf_function (spec, converter, arginfo)
   __printf_function_table[spec] = converter;
   __printf_arginfo_table[spec] = arginfo;
 
-  return 0;
+ out:
+  __libc_lock_unlock (lock);
+
+  return result;
+}
+weak_alias (__register_printf_specifier, register_printf_specifier)
+
+
+/* Register FUNC to be called to format SPEC specifiers.  */
+int
+__register_printf_function (spec, converter, arginfo)
+     int spec;
+     printf_function converter;
+     printf_arginfo_function arginfo;
+{
+  return __register_printf_specifier (spec, converter,
+				      (printf_arginfo_size_function*) arginfo);
 }
 weak_alias (__register_printf_function, register_printf_function)