linux-kernel - [PATCH] kconfig: make parent directories for the saved .config as needed

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Date:   Sat, 11 May 2019 01:56:01 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] 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@...ionext.com>
---

 scripts/kconfig/confdata.c | 3 +++
 scripts/kconfig/mconf.c    | 2 +-
 scripts/kconfig/nconf.c    | 3 +--
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 431b805..b7bdd96 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 5f8c82a..694091f 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 ac92c0d..cbafe3b 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:
-- 
2.7.4