Merge tag 'kconfig-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:

 - error out if a user specifies a directory instead of a file from
   "Save" menu of GUI interfaces

 - do not overwrite .config if there is no change in the configuration

 - create parent directories as needed when a user specifies a new file
   path from "Save" menu of menuconfig/nconfig

 - fix potential buffer overflow

 - some trivial cleanups

* tag 'kconfig-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: make conf_get_autoconfig_name() static
  kconfig: use snprintf for formatting pathnames
  kconfig: remove useless NULL pointer check in conf_write_dep()
  kconfig: make parent directories for the saved .config as needed
  kconfig: do not write .config if the content is the same
  kconfig: do not accept a directory for configuration output
  kconfig: remove trailing whitespaces
  kconfig: Make nconf-cfg.sh executable

1 files changed, 2 insertions, 1 deletions

diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l
index c9df1c8b9824..6354c905b006 100644
--- a/scripts/kconfig/lexer.l
+++ b/scripts/kconfig/lexer.l
@@ -378,7 +378,8 @@ FILE *zconf_fopen(const char *name)
         if (!f && name != NULL && name[0] != '/') {
                 env = getenv(SRCTREE);
                 if (env) {
-                        sprintf(fullname, "%s/%s", env, name);
+                        snprintf(fullname, sizeof(fullname),
+                                 "%s/%s", env, name);
                         f = fopen(fullname, "r");
                 }
         }