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Date: Thu, 1 Sep 2011 10:52:20 -0700
From: crquan@...il.com
To: linux-kbuild@...r.kernel.org, Arnaud Lacombe <lacombar@...il.com>
Cc: Sam Ravnborg <sam@...nborg.org>, Michal Marek <mmarek@...e.cz>,
Nir Tzachar <nir.tzachar@...il.com>,
Randy Dunlap <rdunlap@...otime.net>,
linux-kernel@...r.kernel.org, c.rq541@...cast.net
Subject: [PATCH V3 3/5] scripts/kconfig/nconf: dynamically alloc dialog_input_result
From: Cheng Renquan <crquan@...il.com>
To support unlimited length string config items;
No check for realloc return value keeps code simple, and to be
consistent with other existing unchecked malloc in kconfig.
Signed-off-by: Cheng Renquan <crquan@...il.com>
Signed-off-by: Arnaud Lacombe <lacombar@...il.com>
---
scripts/kconfig/nconf.c | 21 ++++++++++-----------
scripts/kconfig/nconf.gui.c | 20 +++++++++++++++-----
scripts/kconfig/nconf.h | 2 +-
3 files changed, 26 insertions(+), 17 deletions(-)
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 39ca1f1..4248759 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -280,6 +280,9 @@ static int global_exit;
/* the currently selected button */
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);
@@ -695,7 +698,6 @@ static void search_conf(void)
{
struct symbol **sym_arr;
struct gstr res;
- char dialog_input_result[100];
char *dialog_input;
int dres;
again:
@@ -703,7 +705,7 @@ again:
_("Search Configuration Parameter"),
_("Enter " CONFIG_ " (sub)string to search for "
"(with or without \"" CONFIG_ "\")"),
- "", dialog_input_result, 99);
+ "", &dialog_input_result, &dialog_input_result_len);
switch (dres) {
case 0:
break;
@@ -1348,7 +1350,6 @@ static void conf_choice(struct menu *menu)
static void conf_string(struct menu *menu)
{
const char *prompt = menu_get_prompt(menu);
- char dialog_input_result[256];
while (1) {
int res;
@@ -1371,8 +1372,8 @@ static void conf_string(struct menu *menu)
prompt ? _(prompt) : _("Main Menu"),
heading,
sym_get_string_value(menu->sym),
- dialog_input_result,
- sizeof(dialog_input_result));
+ &dialog_input_result,
+ &dialog_input_result_len);
switch (res) {
case 0:
if (sym_set_string_value(menu->sym,
@@ -1392,14 +1393,13 @@ static void conf_string(struct menu *menu)
static void conf_load(void)
{
- char dialog_input_result[256];
while (1) {
int res;
res = dialog_inputbox(main_window,
NULL, load_config_text,
filename,
- dialog_input_result,
- sizeof(dialog_input_result));
+ &dialog_input_result,
+ &dialog_input_result_len);
switch (res) {
case 0:
if (!dialog_input_result[0])
@@ -1424,14 +1424,13 @@ static void conf_load(void)
static void conf_save(void)
{
- char dialog_input_result[256];
while (1) {
int res;
res = dialog_inputbox(main_window,
NULL, save_config_text,
filename,
- dialog_input_result,
- sizeof(dialog_input_result));
+ &dialog_input_result,
+ &dialog_input_result_len);
switch (res) {
case 0:
if (!dialog_input_result[0])
diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index 3ce2a7c..d64bc1c 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -356,7 +356,7 @@ int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
int dialog_inputbox(WINDOW *main_window,
const char *title, const char *prompt,
- const char *init, char *result, int result_len)
+ const char *init, char **resultp, int *result_len)
{
int prompt_lines = 0;
int prompt_width = 0;
@@ -367,7 +367,12 @@ int dialog_inputbox(WINDOW *main_window,
int i, x, y;
int res = -1;
int cursor_position = strlen(init);
+ char *result = *resultp;
+ if (strlen(init)+1 > *result_len) {
+ *result_len = strlen(init)+1;
+ *resultp = result = realloc(result, *result_len);
+ }
/* find the widest line of msg: */
prompt_lines = get_line_no(prompt);
@@ -384,7 +389,7 @@ int dialog_inputbox(WINDOW *main_window,
y = (LINES-(prompt_lines+4))/2;
x = (COLS-(prompt_width+4))/2;
- strncpy(result, init, result_len);
+ strncpy(result, init, *result_len);
/* create the windows */
win = newwin(prompt_lines+6, prompt_width+7, y, x);
@@ -443,7 +448,7 @@ int dialog_inputbox(WINDOW *main_window,
case KEY_UP:
case KEY_RIGHT:
if (cursor_position < len &&
- cursor_position < min(result_len, prompt_width))
+ cursor_position < min(*result_len, prompt_width))
cursor_position++;
break;
case KEY_DOWN:
@@ -452,8 +457,13 @@ int dialog_inputbox(WINDOW *main_window,
cursor_position--;
break;
default:
- if ((isgraph(res) || isspace(res)) &&
- len-2 < result_len) {
+ if ((isgraph(res) || isspace(res))) {
+ /* one for new char, one for '\0' */
+ if (len+2 > *result_len) {
+ *result_len = len+2;
+ *resultp = result = realloc(result,
+ *result_len);
+ }
/* insert the char at the proper position */
memmove(&result[cursor_position+1],
&result[cursor_position],
diff --git a/scripts/kconfig/nconf.h b/scripts/kconfig/nconf.h
index 58fbda8..0d52617 100644
--- a/scripts/kconfig/nconf.h
+++ b/scripts/kconfig/nconf.h
@@ -89,7 +89,7 @@ void fill_window(WINDOW *win, const char *text);
int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...);
int dialog_inputbox(WINDOW *main_window,
const char *title, const char *prompt,
- const char *init, char *result, int result_len);
+ const char *init, char **resultp, int *result_len);
void refresh_all_windows(WINDOW *main_window);
void show_scroll_win(WINDOW *main_window,
const char *title,
--
1.7.6
--
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