From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sun, 28 Sep 2025 11:13:45 +0000 (+0000)
Subject: util: Add helper function to read integers from file
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8dd453b905acdcc67e800685832db65d4ff31349;p=telemetry.git

util: Add helper function to read integers from file

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/daemon/util.c b/src/daemon/util.c
index 6231c47..34e0de9 100644
--- a/src/daemon/util.c
+++ b/src/daemon/util.c
@@ -19,6 +19,7 @@
 #############################################################################*/
 
 #include <errno.h>
+#include <stdint.h>
 #include <stdio.h>
 
 #include "util.h"
@@ -40,3 +41,31 @@ int __collecty_format_number(char* buffer, size_t length, int number) {
 
 	return 0;
 }
+
+int collecty_file_read_uint64(const char* path, uint64_t* number) {
+	unsigned long n = 0;
+	FILE* f = NULL;
+	int r;
+
+	// Open the file
+	f = fopen(path, "r");
+	if (!f)
+		return -errno;
+
+	// Read the number
+	r = fscanf(f, "%lu", &n);
+	if (r != 1) {
+		r = -errno;
+		goto ERROR;
+	}
+
+	// Return the number
+	*number = n;
+	r = 0;
+
+ERROR:
+	if (f)
+		fclose(f);
+
+	return r;
+}
diff --git a/src/daemon/util.h b/src/daemon/util.h
index 04d8dfa..b97084b 100644
--- a/src/daemon/util.h
+++ b/src/daemon/util.h
@@ -21,9 +21,13 @@
 #ifndef COLLECTY_UTIL_H
 #define COLLECTY_UTIL_H
 
+#include <stdint.h>
+
 #define collecty_format_number(buffer, number) \
 	__collecty_format_number(buffer, sizeof(buffer), number)
 
 int __collecty_format_number(char* buffer, size_t length, int number);
 
+int collecty_file_read_uint64(const char* path, uint64_t* number);
+
 #endif /* COLLECTY_UTIL_H */