Constify pointer-typed function arguments
Most of our pointer function arguments are inputs; mark them as const.
Based on a suggestion from Joel Stanley <joel@jms.id.au>.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/inarp.c b/inarp.c
index 4a92ed7..c30e1e8 100644
--- a/inarp.c
+++ b/inarp.c
@@ -44,10 +44,10 @@
static int send_arp_packet(int fd,
int ifindex,
- unsigned char *src_mac,
- struct in_addr *src_ip,
- unsigned char *dest_mac,
- struct in_addr *dest_ip)
+ const unsigned char *src_mac,
+ const struct in_addr *src_ip,
+ const unsigned char *dest_mac,
+ const struct in_addr *dest_ip)
{
struct sockaddr_ll addr;
struct arp_packet arp;
@@ -93,7 +93,7 @@
return rc;
}
-static void show_mac_addr(const char *name, unsigned char *mac_addr)
+static void show_mac_addr(const char *name, const unsigned char *mac_addr)
{
int i;
printf("%s MAC address: ", name);