From 574f59b8f5b5ef54a9d3f7bf1c52c28e1c6dd16b Mon Sep 17 00:00:00 2001
From: Drath <drath@drath.cc>
Date: Mon, 11 May 2026 11:01:37 +0000
Subject: [PATCH] make it take size after all

---
 include/utils.h | 6 +++---
 src/cpu.c       | 2 +-
 src/gpu.c       | 2 +-
 src/sys.c       | 2 +-
 src/utils.c     | 4 ++--
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/utils.h b/include/utils.h
index 4bcbe26..91e1b79 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -1,5 +1,5 @@
-#ifndef UTILS_H
-#define UTILS_H
+#ifndef LINUXSMARTIE_UTILS_H
+#define LINUXSMARTIE_UTILS_H
 
 #include <stdbool.h>
 #include <time.h>
@@ -31,7 +31,7 @@ char *pretty_bytes(uint64_t bytes, int8_t start_suffix, char *buf, size_t bufsz)
 
 bool file_exists(const char *path);
 
-int get_hwmon_dir(char *path);
+int get_hwmon_dir(char *path, size_t bufsz);
 
 size_t read_file(const char *path, char *buffer, size_t n);
 
diff --git a/src/cpu.c b/src/cpu.c
index ca1763c..e4622f6 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -12,7 +12,7 @@ void cpu_detect(struct cpu_sensors_t *t, const char *pci_dev) {
 	t->num_cores = sysconf(_SC_NPROCESSORS_ONLN);
 
 	snprintf(t->hwmon, sizeof(t->hwmon), "/sys/bus/pci/devices/%s/hwmon", pci_dev);
-	const int ret = get_hwmon_dir(t->hwmon);
+	const int ret = get_hwmon_dir(t->hwmon, sizeof(t->hwmon));
 	if (ret != 0) {
 		t->hwmon[0] = '\0';
 		applog(LOG_WRN, "Detected %d cores, module enum #%d. Can't get hwmon path, skipping", t->num_cores, t->module);
diff --git a/src/gpu.c b/src/gpu.c
index 97938d4..a9ae503 100644
--- a/src/gpu.c
+++ b/src/gpu.c
@@ -12,7 +12,7 @@ const uint16_t max_metrics_length = 512;	      // length of the metrics buffer
 
 void gpu_detect(struct gpu_sensors_t *t, const char *pci) {
 	snprintf(t->hwmon, sizeof(t->hwmon), "/sys/bus/pci/devices/%s/hwmon", pci);
-	const int ret = get_hwmon_dir(t->hwmon);
+	const int ret = get_hwmon_dir(t->hwmon, sizeof(t->hwmon));
 	if (ret != 0) {
 		t->hwmon[0] = '\0';
 		applog(LOG_WRN, "Detected GPU hwmon");
diff --git a/src/sys.c b/src/sys.c
index 09f08a9..56039c1 100644
--- a/src/sys.c
+++ b/src/sys.c
@@ -71,7 +71,7 @@ void sys_get_network(struct network_t *network) {
 
 void sys_detect(struct syssensors_t *s, const char *platform) {
 	snprintf(s->hwmon, sizeof(s->hwmon), "/sys/devices/platform/%s/hwmon", platform);
-	const int ret = get_hwmon_dir(s->hwmon);
+	const int ret = get_hwmon_dir(s->hwmon, sizeof(s->hwmon));
 	if (ret != 0) {
 		s->hwmon[0] = '\0';
 		applog(LOG_WRN, "Can't open system hwmon. Kernel params added? Module loaded? See README");
diff --git a/src/utils.c b/src/utils.c
index 7a74cf5..1414378 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -55,12 +55,12 @@ inline bool file_exists(const char *path) {
 }
 
 /* path has to have at least 8 free chars at the end for glob */
-int get_hwmon_dir(char *path) {
+int get_hwmon_dir(char *path, const size_t bufsz) {
 	glob_t g;
 	strncat(path, "/hwmon*", 10);
 
 	if (glob(path, 0, NULL, &g) == 0) {
-		strncpy(path, g.gl_pathv[0], 128); // bug prone, careful
+		strncpy(path, g.gl_pathv[0], bufsz); // same size as hwmon length, careful
 		globfree(&g);
 		return 0;
 	}