Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1555 insertions, 0 deletions

diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
new file mode 100644
index 000000000..af814b39b
--- /dev/null
+++ b/scripts/kconfig/nconf.c
@@ -0,0 +1,1555 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com>
+ *
+ * Derived from menuconfig.
+ */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+
+#include "lkc.h"
+#include "nconf.h"
+#include <ctype.h>
+
+static const char nconf_global_help[] =
+"Help windows\n"
+"------------\n"
+"o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
+"   you the global help window, which you are just reading.\n"
+"\n"
+"o  A short version of the global help is available by pressing <F3>.\n"
+"\n"
+"o  Local help:  To get help related to the current menu entry, use any\n"
+"   of <?> <h>, or if in a data entry window then press <F1>.\n"
+"\n"
+"\n"
+"Menu entries\n"
+"------------\n"
+"This interface lets you select features and parameters for the kernel\n"
+"build.  Kernel features can either be built-in, modularized, or removed.\n"
+"Parameters must be entered as text or decimal or hexadecimal numbers.\n"
+"\n"
+"Menu entries beginning with following braces represent features that\n"
+"  [ ]  can be built in or removed\n"
+"  < >  can be built in, modularized or removed\n"
+"  { }  can be built in or modularized, are selected by another feature\n"
+"  - -  are selected by another feature\n"
+"  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
+"*, M or whitespace inside braces means to build in, build as a module\n"
+"or to exclude the feature respectively.\n"
+"\n"
+"To change any of these features, highlight it with the movement keys\n"
+"listed below and press <y> to build it in, <m> to make it a module or\n"
+"<n> to remove it.  You may press the <Space> key to cycle through the\n"
+"available options.\n"
+"\n"
+"A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
+"empty submenu.\n"
+"\n"
+"Menu navigation keys\n"
+"----------------------------------------------------------------------\n"
+"Linewise up                 <Up>\n"
+"Linewise down               <Down>\n"
+"Pagewise up                 <Page Up>\n"
+"Pagewise down               <Page Down>\n"
+"First entry                 <Home>\n"
+"Last entry                  <End>\n"
+"Enter a submenu             <Right>  <Enter>\n"
+"Go back to parent menu      <Left>   <Esc>  <F5>\n"
+"Close a help window         <Enter>  <Esc>  <F5>\n"
+"Close entry window, apply   <Enter>\n"
+"Close entry window, forget  <Esc>  <F5>\n"
+"Start incremental, case-insensitive search for STRING in menu entries,\n"
+"    no regex support, STRING is displayed in upper left corner\n"
+"                            </>STRING\n"
+"    Remove last character   <Backspace>\n"
+"    Jump to next hit        <Down>\n"
+"    Jump to previous hit    <Up>\n"
+"Exit menu search mode       </>  <Esc>\n"
+"Search for configuration variables with or without leading CONFIG_\n"
+"                            <F8>RegExpr<Enter>\n"
+"Verbose search help         <F8><F1>\n"
+"----------------------------------------------------------------------\n"
+"\n"
+"Unless in a data entry window, key <1> may be used instead of <F1>,\n"
+"<2> instead of <F2>, etc.\n"
+"\n"
+"\n"
+"Radiolist (Choice list)\n"
+"-----------------------\n"
+"Use the movement keys listed above to select the option you wish to set\n"
+"and press <Space>.\n"
+"\n"
+"\n"
+"Data entry\n"
+"----------\n"
+"Enter the requested information and press <Enter>.  Hexadecimal values\n"
+"may be entered without the \"0x\" prefix.\n"
+"\n"
+"\n"
+"Text Box (Help Window)\n"
+"----------------------\n"
+"Use movement keys as listed in table above.\n"
+"\n"
+"Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
+"\n"
+"\n"
+"Alternate configuration files\n"
+"-----------------------------\n"
+"nconfig supports switching between different configurations.\n"
+"Press <F6> to save your current configuration.  Press <F7> and enter\n"
+"a file name to load a previously saved configuration.\n"
+"\n"
+"\n"
+"Terminal configuration\n"
+"----------------------\n"
+"If you use nconfig in a xterm window, make sure your TERM environment\n"
+"variable specifies a terminal configuration which supports at least\n"
+"16 colors.  Otherwise nconfig will look rather bad.\n"
+"\n"
+"If the \"stty size\" command reports the current terminalsize correctly,\n"
+"nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
+"and display longer menus properly.\n"
+"\n"
+"\n"
+"Single menu mode\n"
+"----------------\n"
+"If you prefer to have all of the menu entries listed in a single menu,\n"
+"rather than the default multimenu hierarchy, run nconfig with\n"
+"NCONFIG_MODE environment variable set to single_menu.  Example:\n"
+"\n"
+"make NCONFIG_MODE=single_menu nconfig\n"
+"\n"
+"<Enter> will then unfold the appropriate category, or fold it if it\n"
+"is already unfolded.  Folded menu entries will be designated by a\n"
+"leading \"++>\" and unfolded entries by a leading \"-->\".\n"
+"\n"
+"Note that this mode can eventually be a little more CPU expensive than\n"
+"the default mode, especially with a larger number of unfolded submenus.\n"
+"\n",
+menu_no_f_instructions[] =
+"Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
+"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
+"\n"
+"Use the following keys to navigate the menus:\n"
+"Move up or down with <Up> and <Down>.\n"
+"Enter a submenu with <Enter> or <Right>.\n"
+"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
+"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
+"Pressing <Space> cycles through the available options.\n"
+"To search for menu entries press </>.\n"
+"<Esc> always leaves the current window.\n"
+"\n"
+"You do not have function keys support.\n"
+"Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
+"For verbose global help use key <1>.\n"
+"For help related to the current menu entry press <?> or <h>.\n",
+menu_instructions[] =
+"Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
+"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
+"\n"
+"Use the following keys to navigate the menus:\n"
+"Move up or down with <Up> or <Down>.\n"
+"Enter a submenu with <Enter> or <Right>.\n"
+"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
+"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
+"Pressing <Space> cycles through the available options.\n"
+"To search for menu entries press </>.\n"
+"<Esc> always leaves the current window.\n"
+"\n"
+"Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
+"For verbose global help press <F1>.\n"
+"For help related to the current menu entry press <?> or <h>.\n",
+radiolist_instructions[] =
+"Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
+"with <Space>.\n"
+"For help related to the current entry press <?> or <h>.\n"
+"For global help press <F1>.\n",
+inputbox_instructions_int[] =
+"Please enter a decimal value.\n"
+"Fractions will not be accepted.\n"
+"Press <Enter> to apply, <Esc> to cancel.",
+inputbox_instructions_hex[] =
+"Please enter a hexadecimal value.\n"
+"Press <Enter> to apply, <Esc> to cancel.",
+inputbox_instructions_string[] =
+"Please enter a string value.\n"
+"Press <Enter> to apply, <Esc> to cancel.",
+setmod_text[] =
+"This feature depends on another feature which has been configured as a\n"
+"module.  As a result, the current feature will be built as a module too.",
+load_config_text[] =
+"Enter the name of the configuration file you wish to load.\n"
+"Accept the name shown to restore the configuration you last\n"
+"retrieved.  Leave empty to abort.",
+load_config_help[] =
+"For various reasons, one may wish to keep several different\n"
+"configurations available on a single machine.\n"
+"\n"
+"If you have saved a previous configuration in a file other than the\n"
+"default one, entering its name here will allow you to load and modify\n"
+"that configuration.\n"
+"\n"
+"Leave empty to abort.\n",
+save_config_text[] =
+"Enter a filename to which this configuration should be saved\n"
+"as an alternate.  Leave empty to abort.",
+save_config_help[] =
+"For various reasons, one may wish to keep several different\n"
+"configurations available on a single machine.\n"
+"\n"
+"Entering a file name here will allow you to later retrieve, modify\n"
+"and use the current configuration as an alternate to whatever\n"
+"configuration options you have selected at that time.\n"
+"\n"
+"Leave empty to abort.\n",
+search_help[] =
+"Search for symbols (configuration variable names CONFIG_*) and display\n"
+"their relations.  Regular expressions are supported.\n"
+"Example:  Search for \"^FOO\".\n"
+"Result:\n"
+"-----------------------------------------------------------------\n"
+"Symbol: FOO [ = m]\n"
+"Prompt: Foo bus is used to drive the bar HW\n"
+"Defined at drivers/pci/Kconfig:47\n"
+"Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
+"Location:\n"
+"  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
+"    -> PCI support (PCI [ = y])\n"
+"      -> PCI access mode (<choice> [ = y])\n"
+"Selects: LIBCRC32\n"
+"Selected by: BAR\n"
+"-----------------------------------------------------------------\n"
+"o  The line 'Prompt:' shows the text displayed for this symbol in\n"
+"   the menu hierarchy.\n"
+"o  The 'Defined at' line tells at what file / line number the symbol is\n"
+"   defined.\n"
+"o  The 'Depends on:' line lists symbols that need to be defined for\n"
+"   this symbol to be visible and selectable in the menu.\n"
+"o  The 'Location:' lines tell, where in the menu structure this symbol\n"
+"   is located.  A location followed by a [ = y] indicates that this is\n"
+"   a selectable menu item, and the current value is displayed inside\n"
+"   brackets.\n"
+"o  The 'Selects:' line tells, what symbol will be automatically selected\n"
+"   if this symbol is selected (y or m).\n"
+"o  The 'Selected by' line tells what symbol has selected this symbol.\n"
+"\n"
+"Only relevant lines are shown.\n"
+"\n\n"
+"Search examples:\n"
+"USB  => find all symbols containing USB\n"
+"^USB => find all symbols starting with USB\n"
+"USB$ => find all symbols ending with USB\n"
+"\n";
+
+struct mitem {
+	char str[256];
+	char tag;
+	void *usrptr;
+	int is_visible;
+};
+
+#define MAX_MENU_ITEMS 4096
+static int show_all_items;
+static int indent;
+static struct menu *current_menu;
+static int child_count;
+static int single_menu_mode;
+/* the window in which all information appears */
+static WINDOW *main_window;
+/* the largest size of the menu window */
+static int mwin_max_lines;
+static int mwin_max_cols;
+/* the window in which we show option buttons */
+static MENU *curses_menu;
+static ITEM *curses_menu_items[MAX_MENU_ITEMS];
+static struct mitem k_menu_items[MAX_MENU_ITEMS];
+static int items_num;
+static int global_exit;
+/* the currently selected button */
+static const char *current_instructions = menu_instructions;
+
+static char *dialog_input_result;
+static int dialog_input_result_len;
+
+static void conf(struct menu *menu);
+static void conf_choice(struct menu *menu);
+static void conf_string(struct menu *menu);
+static void conf_load(void);
+static void conf_save(void);
+static void show_help(struct menu *menu);
+static int do_exit(void);
+static void setup_windows(void);
+static void search_conf(void);
+
+typedef void (*function_key_handler_t)(int *key, struct menu *menu);
+static void handle_f1(int *key, struct menu *current_item);
+static void handle_f2(int *key, struct menu *current_item);
+static void handle_f3(int *key, struct menu *current_item);
+static void handle_f4(int *key, struct menu *current_item);
+static void handle_f5(int *key, struct menu *current_item);
+static void handle_f6(int *key, struct menu *current_item);
+static void handle_f7(int *key, struct menu *current_item);
+static void handle_f8(int *key, struct menu *current_item);
+static void handle_f9(int *key, struct menu *current_item);
+
+struct function_keys {
+	const char *key_str;
+	const char *func;
+	function_key key;
+	function_key_handler_t handler;
+};
+
+static const int function_keys_num = 9;
+static struct function_keys function_keys[] = {
+	{
+		.key_str = "F1",
+		.func = "Help",
+		.key = F_HELP,
+		.handler = handle_f1,
+	},
+	{
+		.key_str = "F2",
+		.func = "SymInfo",
+		.key = F_SYMBOL,
+		.handler = handle_f2,
+	},
+	{
+		.key_str = "F3",
+		.func = "Help 2",
+		.key = F_INSTS,
+		.handler = handle_f3,
+	},
+	{
+		.key_str = "F4",
+		.func = "ShowAll",
+		.key = F_CONF,
+		.handler = handle_f4,
+	},
+	{
+		.key_str = "F5",
+		.func = "Back",
+		.key = F_BACK,
+		.handler = handle_f5,
+	},
+	{
+		.key_str = "F6",
+		.func = "Save",
+		.key = F_SAVE,
+		.handler = handle_f6,
+	},
+	{
+		.key_str = "F7",
+		.func = "Load",
+		.key = F_LOAD,
+		.handler = handle_f7,
+	},
+	{
+		.key_str = "F8",
+		.func = "SymSearch",
+		.key = F_SEARCH,
+		.handler = handle_f8,
+	},
+	{
+		.key_str = "F9",
+		.func = "Exit",
+		.key = F_EXIT,
+		.handler = handle_f9,
+	},
+};
+
+static void print_function_line(void)
+{
+	int i;
+	int offset = 1;
+	const int skip = 1;
+	int lines = getmaxy(stdscr);
+
+	for (i = 0; i < function_keys_num; i++) {
+		(void) wattrset(main_window, attributes[FUNCTION_HIGHLIGHT]);
+		mvwprintw(main_window, lines-3, offset,
+				"%s",
+				function_keys[i].key_str);
+		(void) wattrset(main_window, attributes[FUNCTION_TEXT]);
+		offset += strlen(function_keys[i].key_str);
+		mvwprintw(main_window, lines-3,
+				offset, "%s",
+				function_keys[i].func);
+		offset += strlen(function_keys[i].func) + skip;
+	}
+	(void) wattrset(main_window, attributes[NORMAL]);
+}
+
+/* help */
+static void handle_f1(int *key, struct menu *current_item)
+{
+	show_scroll_win(main_window,
+			"Global help", nconf_global_help);
+	return;
+}
+
+/* symbole help */
+static void handle_f2(int *key, struct menu *current_item)
+{
+	show_help(current_item);
+	return;
+}
+
+/* instructions */
+static void handle_f3(int *key, struct menu *current_item)
+{
+	show_scroll_win(main_window,
+			"Short help",
+			current_instructions);
+	return;
+}
+
+/* config */
+static void handle_f4(int *key, struct menu *current_item)
+{
+	int res = btn_dialog(main_window,
+			"Show all symbols?",
+			2,
+			"   <Show All>   ",
+			"<Don't show all>");
+	if (res == 0)
+		show_all_items = 1;
+	else if (res == 1)
+		show_all_items = 0;
+
+	return;
+}
+
+/* back */
+static void handle_f5(int *key, struct menu *current_item)
+{
+	*key = KEY_LEFT;
+	return;
+}
+
+/* save */
+static void handle_f6(int *key, struct menu *current_item)
+{
+	conf_save();
+	return;
+}
+
+/* load */
+static void handle_f7(int *key, struct menu *current_item)
+{
+	conf_load();
+	return;
+}
+
+/* search */
+static void handle_f8(int *key, struct menu *current_item)
+{
+	search_conf();
+	return;
+}
+
+/* exit */
+static void handle_f9(int *key, struct menu *current_item)
+{
+	do_exit();
+	return;
+}
+
+/* return != 0 to indicate the key was handles */
+static int process_special_keys(int *key, struct menu *menu)
+{
+	int i;
+
+	if (*key == KEY_RESIZE) {
+		setup_windows();
+		return 1;
+	}
+
+	for (i = 0; i < function_keys_num; i++) {
+		if (*key == KEY_F(function_keys[i].key) ||
+		    *key == '0' + function_keys[i].key){
+			function_keys[i].handler(key, menu);
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static void clean_items(void)
+{
+	int i;
+	for (i = 0; curses_menu_items[i]; i++)
+		free_item(curses_menu_items[i]);
+	bzero(curses_menu_items, sizeof(curses_menu_items));
+	bzero(k_menu_items, sizeof(k_menu_items));
+	items_num = 0;
+}
+
+typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
+	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;
+
+/* return the index of the matched item, or -1 if no such item exists */
+static int get_mext_match(const char *match_str, match_f flag)
+{
+	int match_start = item_index(current_item(curses_menu));
+	int index;
+
+	if (flag == FIND_NEXT_MATCH_DOWN)
+		++match_start;
+	else if (flag == FIND_NEXT_MATCH_UP)
+		--match_start;
+
+	match_start = (match_start + items_num) % items_num;
+	index = match_start;
+	while (true) {
+		char *str = k_menu_items[index].str;
+		if (strcasestr(str, match_str) != NULL)
+			return index;
+		if (flag == FIND_NEXT_MATCH_UP ||
+		    flag == MATCH_TINKER_PATTERN_UP)
+			--index;
+		else
+			++index;
+		index = (index + items_num) % items_num;
+		if (index == match_start)
+			return -1;
+	}
+}
+
+/* Make a new item. */
+static void item_make(struct menu *menu, char tag, const char *fmt, ...)
+{
+	va_list ap;
+
+	if (items_num > MAX_MENU_ITEMS-1)
+		return;
+
+	bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
+	k_menu_items[items_num].tag = tag;
+	k_menu_items[items_num].usrptr = menu;
+	if (menu != NULL)
+		k_menu_items[items_num].is_visible =
+			menu_is_visible(menu);
+	else
+		k_menu_items[items_num].is_visible = 1;
+
+	va_start(ap, fmt);
+	vsnprintf(k_menu_items[items_num].str,
+		  sizeof(k_menu_items[items_num].str),
+		  fmt, ap);
+	va_end(ap);
+
+	if (!k_menu_items[items_num].is_visible)
+		memcpy(k_menu_items[items_num].str, "XXX", 3);
+
+	curses_menu_items[items_num] = new_item(
+			k_menu_items[items_num].str,
+			k_menu_items[items_num].str);
+	set_item_userptr(curses_menu_items[items_num],
+			&k_menu_items[items_num]);
+	/*
+	if (!k_menu_items[items_num].is_visible)
+		item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
+	*/
+
+	items_num++;
+	curses_menu_items[items_num] = NULL;
+}
+
+/* very hackish. adds a string to the last item added */
+static void item_add_str(const char *fmt, ...)
+{
+	va_list ap;
+	int index = items_num-1;
+	char new_str[256];
+	char tmp_str[256];
+
+	if (index < 0)
+		return;
+
+	va_start(ap, fmt);
+	vsnprintf(new_str, sizeof(new_str), fmt, ap);
+	va_end(ap);
+	snprintf(tmp_str, sizeof(tmp_str), "%s%s",
+			k_menu_items[index].str, new_str);
+	strncpy(k_menu_items[index].str,
+		tmp_str,
+		sizeof(k_menu_items[index].str));
+
+	free_item(curses_menu_items[index]);
+	curses_menu_items[index] = new_item(
+			k_menu_items[index].str,
+			k_menu_items[index].str);
+	set_item_userptr(curses_menu_items[index],
+			&k_menu_items[index]);
+}
+
+/* get the tag of the currently selected item */
+static char item_tag(void)
+{
+	ITEM *cur;
+	struct mitem *mcur;
+
+	cur = current_item(curses_menu);
+	if (cur == NULL)
+		return 0;
+	mcur = (struct mitem *) item_userptr(cur);
+	return mcur->tag;
+}
+
+static int curses_item_index(void)
+{
+	return  item_index(current_item(curses_menu));
+}
+
+static void *item_data(void)
+{
+	ITEM *cur;
+	struct mitem *mcur;
+
+	cur = current_item(curses_menu);
+	if (!cur)
+		return NULL;
+	mcur = (struct mitem *) item_userptr(cur);
+	return mcur->usrptr;
+
+}
+
+static int item_is_tag(char tag)
+{
+	return item_tag() == tag;
+}
+
+static char filename[PATH_MAX+1];
+static char menu_backtitle[PATH_MAX+128];
+static const char *set_config_filename(const char *config_filename)
+{
+	int size;
+
+	size = snprintf(menu_backtitle, sizeof(menu_backtitle),
+			"%s - %s", config_filename, rootmenu.prompt->text);
+	if (size >= sizeof(menu_backtitle))
+		menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
+
+	size = snprintf(filename, sizeof(filename), "%s", config_filename);
+	if (size >= sizeof(filename))
+		filename[sizeof(filename)-1] = '\0';
+	return menu_backtitle;
+}
+
+/* return = 0 means we are successful.
+ * -1 means go on doing what you were doing
+ */
+static int do_exit(void)
+{
+	int res;
+	if (!conf_get_changed()) {
+		global_exit = 1;
+		return 0;
+	}
+	res = btn_dialog(main_window,
+			"Do you wish to save your new configuration?\n"
+				"<ESC> to cancel and resume nconfig.",
+			2,
+			"   <save>   ",
+			"<don't save>");
+	if (res == KEY_EXIT) {
+		global_exit = 0;
+		return -1;
+	}
+
+	/* if we got here, the user really wants to exit */
+	switch (res) {
+	case 0:
+		res = conf_write(filename);
+		if (res)
+			btn_dialog(
+				main_window,
+				"Error during writing of configuration.\n"
+				  "Your configuration changes were NOT saved.",
+				  1,
+				  "<OK>");
+		conf_write_autoconf(0);
+		break;
+	default:
+		btn_dialog(
+			main_window,
+			"Your configuration changes were NOT saved.",
+			1,
+			"<OK>");
+		break;
+	}
+	global_exit = 1;
+	return 0;
+}
+
+
+static void search_conf(void)
+{
+	struct symbol **sym_arr;
+	struct gstr res;
+	struct gstr title;
+	char *dialog_input;
+	int dres;
+
+	title = str_new();
+	str_printf( &title, "Enter (sub)string or regexp to search for "
+			      "(with or without \"%s\")", CONFIG_);
+
+again:
+	dres = dialog_inputbox(main_window,
+			"Search Configuration Parameter",
+			str_get(&title),
+			"", &dialog_input_result, &dialog_input_result_len);
+	switch (dres) {
+	case 0:
+		break;
+	case 1:
+		show_scroll_win(main_window,
+				"Search Configuration", search_help);
+		goto again;
+	default:
+		str_free(&title);
+		return;
+	}
+
+	/* strip the prefix if necessary */
+	dialog_input = dialog_input_result;
+	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
+		dialog_input += strlen(CONFIG_);
+
+	sym_arr = sym_re_search(dialog_input);
+	res = get_relations_str(sym_arr, NULL);
+	free(sym_arr);
+	show_scroll_win(main_window,
+			"Search Results", str_get(&res));
+	str_free(&res);
+	str_free(&title);
+}
+
+
+static void build_conf(struct menu *menu)
+{
+	struct symbol *sym;
+	struct property *prop;
+	struct menu *child;
+	int type, tmp, doint = 2;
+	tristate val;
+	char ch;
+
+	if (!menu || (!show_all_items && !menu_is_visible(menu)))
+		return;
+
+	sym = menu->sym;
+	prop = menu->prompt;
+	if (!sym) {
+		if (prop && menu != current_menu) {
+			const char *prompt = menu_get_prompt(menu);
+			enum prop_type ptype;
+			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+			switch (ptype) {
+			case P_MENU:
+				child_count++;
+				if (single_menu_mode) {
+					item_make(menu, 'm',
+						"%s%*c%s",
+						menu->data ? "-->" : "++>",
+						indent + 1, ' ', prompt);
+				} else
+					item_make(menu, 'm',
+						  "   %*c%s  %s",
+						  indent + 1, ' ', prompt,
+						  menu_is_empty(menu) ? "----" : "--->");
+
+				if (single_menu_mode && menu->data)
+					goto conf_childs;
+				return;
+			case P_COMMENT:
+				if (prompt) {
+					child_count++;
+					item_make(menu, ':',
+						"   %*c*** %s ***",
+						indent + 1, ' ',
+						prompt);
+				}
+				break;
+			default:
+				if (prompt) {
+					child_count++;
+					item_make(menu, ':', "---%*c%s",
+						indent + 1, ' ',
+						prompt);
+				}
+			}
+		} else
+			doint = 0;
+		goto conf_childs;
+	}
+
+	type = sym_get_type(sym);
+	if (sym_is_choice(sym)) {
+		struct symbol *def_sym = sym_get_choice_value(sym);
+		struct menu *def_menu = NULL;
+
+		child_count++;
+		for (child = menu->list; child; child = child->next) {
+			if (menu_is_visible(child) && child->sym == def_sym)
+				def_menu = child;
+		}
+
+		val = sym_get_tristate_value(sym);
+		if (sym_is_changeable(sym)) {
+			switch (type) {
+			case S_BOOLEAN:
+				item_make(menu, 't', "[%c]",
+						val == no ? ' ' : '*');
+				break;
+			case S_TRISTATE:
+				switch (val) {
+				case yes:
+					ch = '*';
+					break;
+				case mod:
+					ch = 'M';
+					break;
+				default:
+					ch = ' ';
+					break;
+				}
+				item_make(menu, 't', "<%c>", ch);
+				break;
+			}
+		} else {
+			item_make(menu, def_menu ? 't' : ':', "   ");
+		}
+
+		item_add_str("%*c%s", indent + 1,
+				' ', menu_get_prompt(menu));
+		if (val == yes) {
+			if (def_menu) {
+				item_add_str(" (%s)",
+					menu_get_prompt(def_menu));
+				item_add_str("  --->");
+				if (def_menu->list) {
+					indent += 2;
+					build_conf(def_menu);
+					indent -= 2;
+				}
+			}
+			return;
+		}
+	} else {
+		if (menu == current_menu) {
+			item_make(menu, ':',
+				"---%*c%s", indent + 1,
+				' ', menu_get_prompt(menu));
+			goto conf_childs;
+		}
+		child_count++;
+		val = sym_get_tristate_value(sym);
+		if (sym_is_choice_value(sym) && val == yes) {
+			item_make(menu, ':', "   ");
+		} else {
+			switch (type) {
+			case S_BOOLEAN:
+				if (sym_is_changeable(sym))
+					item_make(menu, 't', "[%c]",
+						val == no ? ' ' : '*');
+				else
+					item_make(menu, 't', "-%c-",
+						val == no ? ' ' : '*');
+				break;
+			case S_TRISTATE:
+				switch (val) {
+				case yes:
+					ch = '*';
+					break;
+				case mod:
+					ch = 'M';
+					break;
+				default:
+					ch = ' ';
+					break;
+				}
+				if (sym_is_changeable(sym)) {
+					if (sym->rev_dep.tri == mod)
+						item_make(menu,
+							't', "{%c}", ch);
+					else
+						item_make(menu,
+							't', "<%c>", ch);
+				} else
+					item_make(menu, 't', "-%c-", ch);
+				break;
+			default:
+				tmp = 2 + strlen(sym_get_string_value(sym));
+				item_make(menu, 's', "    (%s)",
+						sym_get_string_value(sym));
+				tmp = indent - tmp + 4;
+				if (tmp < 0)
+					tmp = 0;
+				item_add_str("%*c%s%s", tmp, ' ',
+						menu_get_prompt(menu),
+						(sym_has_value(sym) ||
+						 !sym_is_changeable(sym)) ? "" :
+						" (NEW)");
+				goto conf_childs;
+			}
+		}
+		item_add_str("%*c%s%s", indent + 1, ' ',
+				menu_get_prompt(menu),
+				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
+				"" : " (NEW)");
+		if (menu->prompt && menu->prompt->type == P_MENU) {
+			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
+			return;
+		}
+	}
+
+conf_childs:
+	indent += doint;
+	for (child = menu->list; child; child = child->next)
+		build_conf(child);
+	indent -= doint;
+}
+
+static void reset_menu(void)
+{
+	unpost_menu(curses_menu);
+	clean_items();
+}
+
+/* adjust the menu to show this item.
+ * prefer not to scroll the menu if possible*/
+static void center_item(int selected_index, int *last_top_row)
+{
+	int toprow;
+
+	set_top_row(curses_menu, *last_top_row);
+	toprow = top_row(curses_menu);
+	if (selected_index < toprow ||
+	    selected_index >= toprow+mwin_max_lines) {
+		toprow = max(selected_index-mwin_max_lines/2, 0);
+		if (toprow >= item_count(curses_menu)-mwin_max_lines)
+			toprow = item_count(curses_menu)-mwin_max_lines;
+		set_top_row(curses_menu, toprow);
+	}
+	set_current_item(curses_menu,
+			curses_menu_items[selected_index]);
+	*last_top_row = toprow;
+	post_menu(curses_menu);
+	refresh_all_windows(main_window);
+}
+
+/* this function assumes reset_menu has been called before */
+static void show_menu(const char *prompt, const char *instructions,
+		int selected_index, int *last_top_row)
+{
+	int maxx, maxy;
+	WINDOW *menu_window;
+
+	current_instructions = instructions;
+
+	clear();
+	(void) wattrset(main_window, attributes[NORMAL]);
+	print_in_middle(stdscr, 1, 0, getmaxx(stdscr),
+			menu_backtitle,
+			attributes[MAIN_HEADING]);
+
+	(void) wattrset(main_window, attributes[MAIN_MENU_BOX]);
+	box(main_window, 0, 0);
+	(void) wattrset(main_window, attributes[MAIN_MENU_HEADING]);
+	mvwprintw(main_window, 0, 3, " %s ", prompt);
+	(void) wattrset(main_window, attributes[NORMAL]);
+
+	set_menu_items(curses_menu, curses_menu_items);
+
+	/* position the menu at the middle of the screen */
+	scale_menu(curses_menu, &maxy, &maxx);
+	maxx = min(maxx, mwin_max_cols-2);
+	maxy = mwin_max_lines;
+	menu_window = derwin(main_window,
+			maxy,
+			maxx,
+			2,
+			(mwin_max_cols-maxx)/2);
+	keypad(menu_window, TRUE);
+	set_menu_win(curses_menu, menu_window);
+	set_menu_sub(curses_menu, menu_window);
+
+	/* must reassert this after changing items, otherwise returns to a
+	 * default of 16
+	 */
+	set_menu_format(curses_menu, maxy, 1);
+	center_item(selected_index, last_top_row);
+	set_menu_format(curses_menu, maxy, 1);
+
+	print_function_line();
+
+	/* Post the menu */
+	post_menu(curses_menu);
+	refresh_all_windows(main_window);
+}
+
+static void adj_match_dir(match_f *match_direction)
+{
+	if (*match_direction == FIND_NEXT_MATCH_DOWN)
+		*match_direction =
+			MATCH_TINKER_PATTERN_DOWN;
+	else if (*match_direction == FIND_NEXT_MATCH_UP)
+		*match_direction =
+			MATCH_TINKER_PATTERN_UP;
+	/* else, do no change.. */
+}
+
+struct match_state
+{
+	int in_search;
+	match_f match_direction;
+	char pattern[256];
+};
+
+/* Return 0 means I have handled the key. In such a case, ans should hold the
+ * item to center, or -1 otherwise.
+ * Else return -1 .
+ */
+static int do_match(int key, struct match_state *state, int *ans)
+{
+	char c = (char) key;
+	int terminate_search = 0;
+	*ans = -1;
+	if (key == '/' || (state->in_search && key == 27)) {
+		move(0, 0);
+		refresh();
+		clrtoeol();
+		state->in_search = 1-state->in_search;
+		bzero(state->pattern, sizeof(state->pattern));
+		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
+		return 0;
+	} else if (!state->in_search)
+		return 1;
+
+	if (isalnum(c) || isgraph(c) || c == ' ') {
+		state->pattern[strlen(state->pattern)] = c;
+		state->pattern[strlen(state->pattern)] = '\0';
+		adj_match_dir(&state->match_direction);
+		*ans = get_mext_match(state->pattern,
+				state->match_direction);
+	} else if (key == KEY_DOWN) {
+		state->match_direction = FIND_NEXT_MATCH_DOWN;
+		*ans = get_mext_match(state->pattern,
+				state->match_direction);
+	} else if (key == KEY_UP) {
+		state->match_direction = FIND_NEXT_MATCH_UP;
+		*ans = get_mext_match(state->pattern,
+				state->match_direction);
+	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
+		state->pattern[strlen(state->pattern)-1] = '\0';
+		adj_match_dir(&state->match_direction);
+	} else
+		terminate_search = 1;
+
+	if (terminate_search) {
+		state->in_search = 0;
+		bzero(state->pattern, sizeof(state->pattern));
+		move(0, 0);
+		refresh();
+		clrtoeol();
+		return -1;
+	}
+	return 0;
+}
+
+static void conf(struct menu *menu)
+{
+	struct menu *submenu = NULL;
+	const char *prompt = menu_get_prompt(menu);
+	struct symbol *sym;
+	int res;
+	int current_index = 0;
+	int last_top_row = 0;
+	struct match_state match_state = {
+		.in_search = 0,
+		.match_direction = MATCH_TINKER_PATTERN_DOWN,
+		.pattern = "",
+	};
+
+	while (!global_exit) {
+		reset_menu();
+		current_menu = menu;
+		build_conf(menu);
+		if (!child_count)
+			break;
+
+		show_menu(prompt ? prompt : "Main Menu",
+				menu_instructions,
+				current_index, &last_top_row);
+		keypad((menu_win(curses_menu)), TRUE);
+		while (!global_exit) {
+			if (match_state.in_search) {
+				mvprintw(0, 0,
+					"searching: %s", match_state.pattern);
+				clrtoeol();
+			}
+			refresh_all_windows(main_window);
+			res = wgetch(menu_win(curses_menu));
+			if (!res)
+				break;
+			if (do_match(res, &match_state, &current_index) == 0) {
+				if (current_index != -1)
+					center_item(current_index,
+						    &last_top_row);
+				continue;
+			}
+			if (process_special_keys(&res,
+						(struct menu *) item_data()))
+				break;
+			switch (res) {
+			case KEY_DOWN:
+				menu_driver(curses_menu, REQ_DOWN_ITEM);
+				break;
+			case KEY_UP:
+				menu_driver(curses_menu, REQ_UP_ITEM);
+				break;
+			case KEY_NPAGE:
+				menu_driver(curses_menu, REQ_SCR_DPAGE);
+				break;
+			case KEY_PPAGE:
+				menu_driver(curses_menu, REQ_SCR_UPAGE);
+				break;
+			case KEY_HOME:
+				menu_driver(curses_menu, REQ_FIRST_ITEM);
+				break;
+			case KEY_END:
+				menu_driver(curses_menu, REQ_LAST_ITEM);
+				break;
+			case 'h':
+			case '?':
+				show_help((struct menu *) item_data());
+				break;
+			}
+			if (res == 10 || res == 27 ||
+				res == 32 || res == 'n' || res == 'y' ||
+				res == KEY_LEFT || res == KEY_RIGHT ||
+				res == 'm')
+				break;
+			refresh_all_windows(main_window);
+		}
+
+		refresh_all_windows(main_window);
+		/* if ESC or left*/
+		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
+			break;
+
+		/* remember location in the menu */
+		last_top_row = top_row(curses_menu);
+		current_index = curses_item_index();
+
+		if (!item_tag())
+			continue;
+
+		submenu = (struct menu *) item_data();
+		if (!submenu || !menu_is_visible(submenu))
+			continue;
+		sym = submenu->sym;
+
+		switch (res) {
+		case ' ':
+			if (item_is_tag('t'))
+				sym_toggle_tristate_value(sym);
+			else if (item_is_tag('m'))
+				conf(submenu);
+			break;
+		case KEY_RIGHT:
+		case 10: /* ENTER WAS PRESSED */
+			switch (item_tag()) {
+			case 'm':
+				if (single_menu_mode)
+					submenu->data =
+						(void *) (long) !submenu->data;
+				else
+					conf(submenu);
+				break;
+			case 't':
+				if (sym_is_choice(sym) &&
+				    sym_get_tristate_value(sym) == yes)
+					conf_choice(submenu);
+				else if (submenu->prompt &&
+					 submenu->prompt->type == P_MENU)
+					conf(submenu);
+				else if (res == 10)
+					sym_toggle_tristate_value(sym);
+				break;
+			case 's':
+				conf_string(submenu);
+				break;
+			}
+			break;
+		case 'y':
+			if (item_is_tag('t')) {
+				if (sym_set_tristate_value(sym, yes))
+					break;
+				if (sym_set_tristate_value(sym, mod))
+					btn_dialog(main_window, setmod_text, 0);
+			}
+			break;
+		case 'n':
+			if (item_is_tag('t'))
+				sym_set_tristate_value(sym, no);
+			break;
+		case 'm':
+			if (item_is_tag('t'))
+				sym_set_tristate_value(sym, mod);
+			break;
+		}
+	}
+}
+
+static void conf_message_callback(const char *s)
+{
+	btn_dialog(main_window, s, 1, "<OK>");
+}
+
+static void show_help(struct menu *menu)
+{
+	struct gstr help;
+
+	if (!menu)
+		return;
+
+	help = str_new();
+	menu_get_ext_help(menu, &help);
+	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
+	str_free(&help);
+}
+
+static void conf_choice(struct menu *menu)
+{
+	const char *prompt = menu_get_prompt(menu);
+	struct menu *child = NULL;
+	struct symbol *active;
+	int selected_index = 0;
+	int last_top_row = 0;
+	int res, i = 0;
+	struct match_state match_state = {
+		.in_search = 0,
+		.match_direction = MATCH_TINKER_PATTERN_DOWN,
+		.pattern = "",
+	};
+
+	active = sym_get_choice_value(menu->sym);
+	/* this is mostly duplicated from the conf() function. */
+	while (!global_exit) {
+		reset_menu();
+
+		for (i = 0, child = menu->list; child; child = child->next) {
+			if (!show_all_items && !menu_is_visible(child))
+				continue;
+
+			if (child->sym == sym_get_choice_value(menu->sym))
+				item_make(child, ':', "<X> %s",
+						menu_get_prompt(child));
+			else if (child->sym)
+				item_make(child, ':', "    %s",
+						menu_get_prompt(child));
+			else
+				item_make(child, ':', "*** %s ***",
+						menu_get_prompt(child));
+
+			if (child->sym == active){
+				last_top_row = top_row(curses_menu);
+				selected_index = i;
+			}
+			i++;
+		}
+		show_menu(prompt ? prompt : "Choice Menu",
+				radiolist_instructions,
+				selected_index,
+				&last_top_row);
+		while (!global_exit) {
+			if (match_state.in_search) {
+				mvprintw(0, 0, "searching: %s",
+					 match_state.pattern);
+				clrtoeol();
+			}
+			refresh_all_windows(main_window);
+			res = wgetch(menu_win(curses_menu));
+			if (!res)
+				break;
+			if (do_match(res, &match_state, &selected_index) == 0) {
+				if (selected_index != -1)
+					center_item(selected_index,
+						    &last_top_row);
+				continue;
+			}
+			if (process_special_keys(
+						&res,
+						(struct menu *) item_data()))
+				break;
+			switch (res) {
+			case KEY_DOWN:
+				menu_driver(curses_menu, REQ_DOWN_ITEM);
+				break;
+			case KEY_UP:
+				menu_driver(curses_menu, REQ_UP_ITEM);
+				break;
+			case KEY_NPAGE:
+				menu_driver(curses_menu, REQ_SCR_DPAGE);
+				break;
+			case KEY_PPAGE:
+				menu_driver(curses_menu, REQ_SCR_UPAGE);
+				break;
+			case KEY_HOME:
+				menu_driver(curses_menu, REQ_FIRST_ITEM);
+				break;
+			case KEY_END:
+				menu_driver(curses_menu, REQ_LAST_ITEM);
+				break;
+			case 'h':
+			case '?':
+				show_help((struct menu *) item_data());
+				break;
+			}
+			if (res == 10 || res == 27 || res == ' ' ||
+					res == KEY_LEFT){
+				break;
+			}
+			refresh_all_windows(main_window);
+		}
+		/* if ESC or left */
+		if (res == 27 || res == KEY_LEFT)
+			break;
+
+		child = item_data();
+		if (!child || !menu_is_visible(child) || !child->sym)
+			continue;
+		switch (res) {
+		case ' ':
+		case  10:
+		case KEY_RIGHT:
+			sym_set_tristate_value(child->sym, yes);
+			return;
+		case 'h':
+		case '?':
+			show_help(child);
+			active = child->sym;
+			break;
+		case KEY_EXIT:
+			return;
+		}
+	}
+}
+
+static void conf_string(struct menu *menu)
+{
+	const char *prompt = menu_get_prompt(menu);
+
+	while (1) {
+		int res;
+		const char *heading;
+
+		switch (sym_get_type(menu->sym)) {
+		case S_INT:
+			heading = inputbox_instructions_int;
+			break;
+		case S_HEX:
+			heading = inputbox_instructions_hex;
+			break;
+		case S_STRING:
+			heading = inputbox_instructions_string;
+			break;
+		default:
+			heading = "Internal nconf error!";
+		}
+		res = dialog_inputbox(main_window,
+				prompt ? prompt : "Main Menu",
+				heading,
+				sym_get_string_value(menu->sym),
+				&dialog_input_result,
+				&dialog_input_result_len);
+		switch (res) {
+		case 0:
+			if (sym_set_string_value(menu->sym,
+						dialog_input_result))
+				return;
+			btn_dialog(main_window,
+				"You have made an invalid entry.", 0);
+			break;
+		case 1:
+			show_help(menu);
+			break;
+		case KEY_EXIT:
+			return;
+		}
+	}
+}
+
+static void conf_load(void)
+{
+	while (1) {
+		int res;
+		res = dialog_inputbox(main_window,
+				NULL, load_config_text,
+				filename,
+				&dialog_input_result,
+				&dialog_input_result_len);
+		switch (res) {
+		case 0:
+			if (!dialog_input_result[0])
+				return;
+			if (!conf_read(dialog_input_result)) {
+				set_config_filename(dialog_input_result);
+				sym_set_change_count(1);
+				return;
+			}
+			btn_dialog(main_window, "File does not exist!", 0);
+			break;
+		case 1:
+			show_scroll_win(main_window,
+					"Load Alternate Configuration",
+					load_config_help);
+			break;
+		case KEY_EXIT:
+			return;
+		}
+	}
+}
+
+static void conf_save(void)
+{
+	while (1) {
+		int res;
+		res = dialog_inputbox(main_window,
+				NULL, save_config_text,
+				filename,
+				&dialog_input_result,
+				&dialog_input_result_len);
+		switch (res) {
+		case 0:
+			if (!dialog_input_result[0])
+				return;
+			res = conf_write(dialog_input_result);
+			if (!res) {
+				set_config_filename(dialog_input_result);
+				return;
+			}
+			btn_dialog(main_window, "Can't create file!",
+				1, "<OK>");
+			break;
+		case 1:
+			show_scroll_win(main_window,
+				"Save Alternate Configuration",
+				save_config_help);
+			break;
+		case KEY_EXIT:
+			return;
+		}
+	}
+}
+
+static void setup_windows(void)
+{
+	int lines, columns;
+
+	getmaxyx(stdscr, lines, columns);
+
+	if (main_window != NULL)
+		delwin(main_window);
+
+	/* set up the menu and menu window */
+	main_window = newwin(lines-2, columns-2, 2, 1);
+	keypad(main_window, TRUE);
+	mwin_max_lines = lines-7;
+	mwin_max_cols = columns-6;
+
+	/* panels order is from bottom to top */
+	new_panel(main_window);
+}
+
+int main(int ac, char **av)
+{
+	int lines, columns;
+	char *mode;
+
+	if (ac > 1 && strcmp(av[1], "-s") == 0) {
+		/* Silence conf_read() until the real callback is set up */
+		conf_set_message_callback(NULL);
+		av++;
+	}
+	conf_parse(av[1]);
+	conf_read(NULL);
+
+	mode = getenv("NCONFIG_MODE");
+	if (mode) {
+		if (!strcasecmp(mode, "single_menu"))
+			single_menu_mode = 1;
+	}
+
+	/* Initialize curses */
+	initscr();
+	/* set color theme */
+	set_colors();
+
+	cbreak();
+	noecho();
+	keypad(stdscr, TRUE);
+	curs_set(0);
+
+	getmaxyx(stdscr, lines, columns);
+	if (columns < 75 || lines < 20) {
+		endwin();
+		printf("Your terminal should have at "
+			"least 20 lines and 75 columns\n");
+		return 1;
+	}
+
+	notimeout(stdscr, FALSE);
+#if NCURSES_REENTRANT
+	set_escdelay(1);
+#else
+	ESCDELAY = 1;
+#endif
+
+	/* set btns menu */
+	curses_menu = new_menu(curses_menu_items);
+	menu_opts_off(curses_menu, O_SHOWDESC);
+	menu_opts_on(curses_menu, O_SHOWMATCH);
+	menu_opts_on(curses_menu, O_ONEVALUE);
+	menu_opts_on(curses_menu, O_NONCYCLIC);
+	menu_opts_on(curses_menu, O_IGNORECASE);
+	set_menu_mark(curses_menu, " ");
+	set_menu_fore(curses_menu, attributes[MAIN_MENU_FORE]);
+	set_menu_back(curses_menu, attributes[MAIN_MENU_BACK]);
+	set_menu_grey(curses_menu, attributes[MAIN_MENU_GREY]);
+
+	set_config_filename(conf_get_configname());
+	setup_windows();
+
+	/* check for KEY_FUNC(1) */
+	if (has_key(KEY_F(1)) == FALSE) {
+		show_scroll_win(main_window,
+				"Instructions",
+				menu_no_f_instructions);
+	}
+
+	conf_set_message_callback(conf_message_callback);
+	/* do the work */
+	while (!global_exit) {
+		conf(&rootmenu);
+		if (!global_exit && do_exit() == 0)
+			break;
+	}
+	/* ok, we are done */
+	unpost_menu(curses_menu);
+	free_menu(curses_menu);
+	delwin(main_window);
+	clear();
+	refresh();
+	endwin();
+	return 0;
+}