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libiwinfo: fix segfaults in nl80211 hwmodelist and freqlist operations if called on a not existing phy

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This commit is contained in:
Jo-Philipp Wich 2011-07-22 14:49:52 +00:00
parent ff892ab41a
commit 7dc764e861
1 changed files with 2 additions and 2 deletions
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4
contrib/package/iwinfo/src/iwinfo_nl80211.c
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@ -1438,7 +1438,7 @@ int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
if( req ) if( req )
{ {
res = nl80211_send(req); res = nl80211_send(req);
if( res ) if( res && res->attr[NL80211_ATTR_WIPHY_BANDS] )
{ {
nla_for_each_nested(band, nla_for_each_nested(band,
res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
@ -1537,7 +1537,7 @@ int nl80211_get_hwmodelist(const char *ifname, int *buf)
if( req ) if( req )
{ {
res = nl80211_send(req); res = nl80211_send(req);
if( res ) if( res && res->attr[NL80211_ATTR_WIPHY_BANDS] )
{ {
nla_for_each_nested(band, nla_for_each_nested(band,
res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)