linux-kernel - [PATCH 5/6] kconfig: require an exact match for "is not set" to disable CONFIG option

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Message-Id: <20231118075912.1303509-5-masahiroy@kernel.org>
Date:   Sat, 18 Nov 2023 16:59:11 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH 5/6] kconfig: require an exact match for "is not set" to disable CONFIG option

Currently, any string starting "is not set" disables a CONFIG option.

For example, "# CONFIG_FOO is not settled down" is accepted as valid
input, functioning the same as "# CONFIG_FOO is not set". It is a
long-standing oddity.

Check the line against the exact pattern "is not set".

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/kconfig/confdata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 795ac6c9378f..958be12cd621 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -454,7 +454,7 @@ int conf_read_simple(const char *name, int def)
 			if (!p)
 				continue;
 			*p++ = 0;
-			if (strncmp(p, "is not set", 10))
+			if (strcmp(p, "is not set"))
 				continue;
 
 			val = "n";
-- 
2.40.1