diff options
| -rw-r--r-- | src/platform/nm-platform-utils.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/src/platform/nm-platform-utils.c b/src/platform/nm-platform-utils.c index f907d298d1..492572833e 100644 --- a/src/platform/nm-platform-utils.c +++ b/src/platform/nm-platform-utils.c @@ -832,41 +832,42 @@ nmp_utils_ethtool_get_permanent_address (int ifindex, guint8 *buf, size_t *length) { - struct { - struct ethtool_perm_addr e; - guint8 _extra_data[NM_UTILS_HWADDR_LEN_MAX + 1]; - } edata = { - .e.cmd = ETHTOOL_GPERMADDR, - .e.size = NM_UTILS_HWADDR_LEN_MAX, - }; + char ebuf[sizeof (struct ethtool_perm_addr) + NM_UTILS_HWADDR_LEN_MAX + 1]; + struct ethtool_perm_addr *edata; guint i; g_return_val_if_fail (ifindex > 0, FALSE); - if (_ethtool_call_once (ifindex, &edata, sizeof (edata)) < 0) + edata = (struct ethtool_perm_addr *) ebuf; + *edata = (struct ethtool_perm_addr) { + .cmd = ETHTOOL_GPERMADDR, + .size = NM_UTILS_HWADDR_LEN_MAX, + }; + + if (_ethtool_call_once (ifindex, edata, sizeof (*edata)) < 0) return FALSE; - if (edata.e.size > NM_UTILS_HWADDR_LEN_MAX) + if (edata->size > NM_UTILS_HWADDR_LEN_MAX) return FALSE; - if (edata.e.size < 1) + if (edata->size < 1) return FALSE; - if (NM_IN_SET (edata.e.data[0], 0, 0xFF)) { + if (NM_IN_SET (edata->data[0], 0, 0xFF)) { /* Some drivers might return a permanent address of all zeros. * Reject that (rh#1264024) * * Some drivers return a permanent address of all ones. Reject that too */ - for (i = 1; i < edata.e.size; i++) { - if (edata.e.data[0] != edata.e.data[i]) + for (i = 1; i < edata->size; i++) { + if (edata->data[0] != edata->data[i]) goto not_all_0or1; } return FALSE; } not_all_0or1: - memcpy (buf, edata.e.data, edata.e.size); - *length = edata.e.size; + memcpy (buf, edata->data, edata->size); + *length = edata->size; return TRUE; } |