discover: pxe: Avoid dereferencing null pointer

[petitboot] / discover / sysinfo.c

diff --git a/discover/sysinfo.c b/discover/sysinfo.c
index e8e6d52bce971452ebff7f6d714c2005ccd58715..74d1eae573f230a53ea018aab36a713d34686d84 100644 (file)
--- a/discover/sysinfo.c
+++ b/discover/sysinfo.c
@@ -17,6 +17,15 @@ const struct system_info *system_info_get(void)
        return sysinfo;
 }
 
+bool system_info_network_available(void)
+{
+       unsigned int i;
+
+       for (i = 0; i < sysinfo->n_interfaces; i++)
+               if (sysinfo->interfaces[i]->address)
+                       return true;
+       return false;
+}
 
 void system_info_set_interface_address(unsigned int hwaddr_size,
                uint8_t *hwaddr, const char *address)