src/common.h: Add comment about return value of read_file_contents().

[collectd.git] / src / common.h

diff --git a/src/common.h b/src/common.h
index 7b9fa0a..c292abf 100644 (file)
--- a/src/common.h
+++ b/src/common.h
@@ -282,7 +282,8 @@ int notification_init (notification_t *n, int severity, const char *message,
 typedef int (*dirwalk_callback_f)(const char *dirname, const char *filename,
                void *user_data);
 int walk_directory (const char *dir, dirwalk_callback_f callback,
-               void *user_data);
+               void *user_data, int hidden);
+/* Returns the number of bytes read or negative on error. */
 int read_file_contents (const char *filename, char *buf, int bufsize);
 
 counter_t counter_diff (counter_t old_value, counter_t new_value);
@@ -291,4 +292,8 @@ counter_t counter_diff (counter_t old_value, counter_t new_value);
  * (in the range [1-65535]). Returns less than zero on error. */
 int service_name_to_port_number (const char *service_name);
 
+/** Parse a string to a derive_t value. Returns zero on success or non-zero on
+ * failure. If failure is returned, ret_value is not touched. */
+int strtoderive (const char *string, derive_t *ret_value);
+
 #endif /* COMMON_H */