freebsd: correctly check if routing is enabled

diff --git a/src/daemon/lldpd.c b/src/daemon/lldpd.c
index 494d416bb05a555876a9d28481359c7a391f7f37..b9c97502fee73ab7a4e7862085fbf6d4a2108ca8 100644 (file)
--- a/src/daemon/lldpd.c
+++ b/src/daemon/lldpd.c
@@ -36,6 +36,9 @@
 #include <arpa/inet.h>
 #include <pwd.h>
 #include <grp.h>
+#ifdef HOST_OS_FREEBSD
+# include <sys/sysctl.h>
+#endif
 
 static void             usage(void);
 
@@ -803,8 +806,6 @@ lldpd_update_localchassis(struct lldpd *cfg)
 {
        struct utsname un;
        char *hp;
-       int f;
-       char status;
 
        log_debug("localchassis", "update information for local chassis");
 
@@ -839,6 +840,9 @@ lldpd_update_localchassis(struct lldpd *cfg)
         }
 
        /* Check forwarding */
+#if defined HOST_OS_LINUX
+       int f;
+       char status;
        if ((f = priv_open("/proc/sys/net/ipv4/ip_forward")) >= 0) {
                if ((read(f, &status, 1) == 1) && (status == '1')) {
                        log_debug("localchassis", "forwarding is enabled, enable router capability");
@@ -846,8 +850,25 @@ lldpd_update_localchassis(struct lldpd *cfg)
                } else
                        LOCAL_CHASSIS(cfg)->c_cap_enabled &= ~LLDP_CAP_ROUTER;
                close(f);
-       } else
-               log_debug("localchassis", "unable to check if forwarding is enabled");
+       }
+#elif defined HOST_OS_FREEBSD
+       int n, mib[4] = {
+               CTL_NET,
+               PF_INET,
+               IPPROTO_IP,
+               IPCTL_FORWARDING
+       };
+       size_t len = sizeof(int);
+       if (sysctl(mib, 4, &n, &len, NULL, 0) != -1) {
+               if (n == 1) {
+                       log_debug("localchassis", "forwarding is enabled, enable router capability");
+                       LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_ROUTER;
+               } else
+                       LOCAL_CHASSIS(cfg)->c_cap_enabled &= ~LLDP_CAP_ROUTER;
+       }
+#endif
+       else log_debug("localchassis", "unable to check if forwarding is enabled");
+
 #ifdef ENABLE_LLDPMED
        if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_TELEPHONE)
                LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_TELEPHONE;