[PATCH] kconfig: fix missing fclose() on error paths

From: Masahiro Yamada
Date: Tue Feb 08 2022 - 01:27:05 EST


The file is not closed when ferror() fails.

Fixes: 00d674cb3536 ("kconfig: refactor conf_write_dep()")
Fixes: 57ddd07c4560 ("kconfig: refactor conf_write_autoconf()")
Reported-by: Ryan Cai <ycaibb@xxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

scripts/kconfig/confdata.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 59717be31210..16897cb8cefd 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -979,10 +979,10 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)

fprintf(out, "\n$(deps_config): ;\n");

- if (ferror(out)) /* error check for all fprintf() calls */
- return -1;
-
+ ret = ferror(out); /* error check for all fprintf() calls */
fclose(out);
+ if (ret)
+ return -1;

if (rename(tmp, name)) {
perror("rename");
@@ -1093,10 +1093,10 @@ static int __conf_write_autoconf(const char *filename,
print_symbol(file, sym);

/* check possible errors in conf_write_heading() and print_symbol() */
- if (ferror(file))
- return -1;
-
+ ret = ferror(file);
fclose(file);
+ if (ret)
+ return -1;

if (rename(tmp, filename)) {
perror("rename");
--
2.32.0