diff options
Diffstat (limited to 'src/ap/vlan_init.c')
| -rw-r--r-- | src/ap/vlan_init.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/ap/vlan_init.c b/src/ap/vlan_init.c index 31e4fc6b396a1..01fecee026a11 100644 --- a/src/ap/vlan_init.c +++ b/src/ap/vlan_init.c @@ -138,6 +138,8 @@ int vlan_init(struct hostapd_data *hapd) !hapd->conf->vlan) { /* dynamic vlans enabled but no (or empty) vlan_file given */ struct hostapd_vlan *vlan; + int ret; + vlan = os_zalloc(sizeof(*vlan)); if (vlan == NULL) { wpa_printf(MSG_ERROR, "Out of memory while assigning " @@ -146,8 +148,16 @@ int vlan_init(struct hostapd_data *hapd) } vlan->vlan_id = VLAN_ID_WILDCARD; - os_snprintf(vlan->ifname, sizeof(vlan->ifname), "%s.#", - hapd->conf->iface); + ret = os_snprintf(vlan->ifname, sizeof(vlan->ifname), "%s.#", + hapd->conf->iface); + if (ret >= (int) sizeof(vlan->ifname)) { + wpa_printf(MSG_WARNING, + "VLAN: Interface name was truncated to %s", + vlan->ifname); + } else if (ret < 0) { + os_free(vlan); + return ret; + } vlan->next = hapd->conf->vlan; hapd->conf->vlan = vlan; } |