From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Date: Mon, 13 Mar 2023 15:28:51 +0000 (+0100)
Subject: core: sanitize arguments in gpiod_line_config_set_output_values()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3c55c6f3e0c94333acf6f3da1e96ef17fd430887;p=qemu-gpiodev%2Flibgpiod.git

core: sanitize arguments in gpiod_line_config_set_output_values()

Add an assert() for the line config structure and check the rest of the
arguments for invalid values.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---

diff --git a/lib/line-config.c b/lib/line-config.c
index 2b2c0ec..2749a2a 100644
--- a/lib/line-config.c
+++ b/lib/line-config.c
@@ -184,7 +184,9 @@ gpiod_line_config_set_output_values(struct gpiod_line_config *config,
 	size_t i;
 	int ret;
 
-	if (num_values > LINES_MAX) {
+	assert(config);
+
+	if (!num_values || num_values > LINES_MAX || !values) {
 		errno = EINVAL;
 		return -1;
 	}