linux-kernel - [PATCH v2 1/2] module: Put known GPL offenders in an array

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Message-ID: <20241115125121.1242871-2-wse@tuxedocomputers.com>
Date: Fri, 15 Nov 2024 13:49:39 +0100
From: Werner Sembach <wse@...edocomputers.com>
To: u.kleine-koenig@...libre.com,
	mcgrof@...nel.org,
	petr.pavlu@...e.com,
	samitolvanen@...gle.com,
	da.gomez@...sung.com,
	linux-modules@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux@...mhuis.info,
	vv@...edocomputers.com,
	cs@...edo.de
Cc: Uwe Kleine-König <ukleinek@...nel.org>,
	Werner Sembach <wse@...edocomputers.com>
Subject: [PATCH v2 1/2] module: Put known GPL offenders in an array

From: Uwe Kleine-König <ukleinek@...nel.org>

Instead of repeating the add_taint_module() call for each offender, create
an array and loop over that one. This simplifies adding new entries
considerably.

Signed-off-by: Uwe Kleine-König <ukleinek@...nel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Werner Sembach <wse@...edocomputers.com>
---
 kernel/module/main.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/kernel/module/main.c b/kernel/module/main.c
index 49b9bca9de12f..905d7b60dd709 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -2023,11 +2023,20 @@ static int rewrite_section_headers(struct load_info *info, int flags)
 	return 0;
 }
 
+static const char *module_license_offenders[] = {
+	/* driverloader was caught wrongly pretending to be under GPL */
+	"driverloader",
+
+	/* lve claims to be GPL but upstream won't provide source */
+	"lve",
+};
+
 /*
  * These calls taint the kernel depending certain module circumstances */
 static void module_augment_kernel_taints(struct module *mod, struct load_info *info)
 {
 	int prev_taint = test_taint(TAINT_PROPRIETARY_MODULE);
+	size_t i;
 
 	if (!get_modinfo(info, "intree")) {
 		if (!test_taint(TAINT_OOT_MODULE))
@@ -2076,15 +2085,11 @@ static void module_augment_kernel_taints(struct module *mod, struct load_info *i
 	if (strcmp(mod->name, "ndiswrapper") == 0)
 		add_taint(TAINT_PROPRIETARY_MODULE, LOCKDEP_NOW_UNRELIABLE);
 
-	/* driverloader was caught wrongly pretending to be under GPL */
-	if (strcmp(mod->name, "driverloader") == 0)
-		add_taint_module(mod, TAINT_PROPRIETARY_MODULE,
-				 LOCKDEP_NOW_UNRELIABLE);
-
-	/* lve claims to be GPL but upstream won't provide source */
-	if (strcmp(mod->name, "lve") == 0)
-		add_taint_module(mod, TAINT_PROPRIETARY_MODULE,
-				 LOCKDEP_NOW_UNRELIABLE);
+	for (i = 0; i < ARRAY_SIZE(module_license_offenders); ++i) {
+		if (strcmp(mod->name, module_license_offenders[i]) == 0)
+			add_taint_module(mod, TAINT_PROPRIETARY_MODULE,
+					 LOCKDEP_NOW_UNRELIABLE);
+	}
 
 	if (!prev_taint && test_taint(TAINT_PROPRIETARY_MODULE))
 		pr_warn("%s: module license taints kernel.\n", mod->name);
-- 
2.43.0