openvpn plugin: constify

diff --git a/src/openvpn.c b/src/openvpn.c
index 93c8f1b..8bccce3 100644 (file)
--- a/src/openvpn.c
+++ b/src/openvpn.c
@@ -95,7 +95,8 @@ static int openvpn_strsplit (char *string, char **fields, size_t size)
 } /* int openvpn_strsplit */
 
 /* dispatches number of users */
-static void numusers_submit (char *pinst, char *tinst, gauge_t value)
+static void numusers_submit (const char *pinst, const char *tinst,
+               gauge_t value)
 {
        value_t values[1];
        value_list_t vl = VALUE_LIST_INIT;
@@ -115,8 +116,10 @@ static void numusers_submit (char *pinst, char *tinst, gauge_t value)
        plugin_dispatch_values (&vl);
 } /* void numusers_submit */
 
-/* dispatches stats about traffic (TCP or UDP) generated by the tunnel per single endpoint */
-static void iostats_submit (char *pinst, char *tinst, derive_t rx, derive_t tx)
+/* dispatches stats about traffic (TCP or UDP) generated by the tunnel
+ * per single endpoint */
+static void iostats_submit (const char *pinst, const char *tinst,
+               derive_t rx, derive_t tx)
 {
        value_t values[2];
        value_list_t vl = VALUE_LIST_INIT;
@@ -145,7 +148,7 @@ static void iostats_submit (char *pinst, char *tinst, derive_t rx, derive_t tx)
 } /* void traffic_submit */
 
 /* dispatches stats about data compression shown when in single mode */
-static void compression_submit (char *pinst, char *tinst,
+static void compression_submit (const char *pinst, const char *tinst,
                derive_t uncompressed, derive_t compressed)
 {
        value_t values[2];
@@ -168,7 +171,7 @@ static void compression_submit (char *pinst, char *tinst,
        plugin_dispatch_values (&vl);
 } /* void compression_submit */
 
-static int single_read (char *name, FILE *fh)
+static int single_read (const char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[4];
@@ -261,7 +264,7 @@ static int single_read (char *name, FILE *fh)
 } /* int single_read */
 
 /* for reading status version 1 */
-static int multi1_read (char *name, FILE *fh)
+static int multi1_read (const char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[10];
@@ -324,7 +327,7 @@ static int multi1_read (char *name, FILE *fh)
 } /* int multi1_read */
 
 /* for reading status version 2 */
-static int multi2_read (char *name, FILE *fh)
+static int multi2_read (const char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[10];
@@ -386,7 +389,7 @@ static int multi2_read (char *name, FILE *fh)
 } /* int multi2_read */
 
 /* for reading status version 3 */
-static int multi3_read (char *name, FILE *fh)
+static int multi3_read (const char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[15];
@@ -451,7 +454,7 @@ static int multi3_read (char *name, FILE *fh)
 } /* int multi3_read */
 
 /* for reading status version 4 */
-static int multi4_read (char *name, FILE *fh)
+static int multi4_read (const char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[11];