From 5833dd5dd9b936950d3f52f678a60d638ef33ad8 Mon Sep 17 00:00:00 2001
From: Marcel Alexandru Nitan <nitan.marcel@protonmail.com>
Date: Tue, 31 Jan 2023 21:22:18 +0200
Subject: [PATCH] util: report write errors in sysfs_write

---
 src/util.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/util.cpp b/src/util.cpp
index a7bc911..f2f7efe 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -59,11 +59,19 @@ void sysfs_write(char *path, char *content)
 {
 	std::cout << "Write: " << content << " -> " << path << std::endl;
 	int fd;
-	fd = open(path, O_WRONLY);
-	write(fd, content, strlen(content));
+	if (fd = open(path, O_WRONLY) == -1)
+	{
+		perror("Failed to open sysfs file");
+		return;
+	}
+	if (write(fd, content, strlen(content) == -1))
+	{
+		perror("Failed to write sysfs file");
+	}
 	close(fd);
 }
 
+
 char *getprop(char *key)
 {
 	std::array<char, 128> buffer;