kconfig: make parent directories for the saved .config as needed

With menuconfig / nconfig, users can input any file path from the
"Save" menu, but it fails if the parent directory does not exist.

Why not create the parent directory automatically. I think this is
a user-friendly behavior.

I changed the error messages in menuconfig / nconfig.

"Nonexistent directory" is no longer the most likely reason of the
failure. Perhaps, the user specified the existing directory, or
attempted to write to the location without write permission.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

3 files changed, 5 insertions, 3 deletions

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 399973e35533..d7bd353a8e50 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -881,6 +881,9 @@ int conf_write(const char *name)
                 return -1;
         }
 
+        if (make_parent_dir(name))
+                return -1;
+
         env = getenv("KCONFIG_OVERWRITECONFIG");
         if (env && *env) {
                 *tmpname = 0;
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 5f8c82a4cb08..694091f3ef9d 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -936,7 +936,7 @@ static void conf_save(void)
                                 set_config_filename(dialog_input_result);
                                 return;
                         }
-                        show_textbox(NULL, "Can't create file!  Probably a nonexistent directory.", 5, 60);
+                        show_textbox(NULL, "Can't create file!", 5, 60);
                         break;
                 case 1:
                         show_helptext("Save Alternate Configuration", save_config_help);
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index ac92c0ded6c5..cbafe3bf082e 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -1438,8 +1438,7 @@ static void conf_save(void)
                                 set_config_filename(dialog_input_result);
                                 return;
                         }
-                        btn_dialog(main_window, "Can't create file! "
-                                "Probably a nonexistent directory.",
+                        btn_dialog(main_window, "Can't create file!",
                                 1, "<OK>");
                         break;
                 case 1: