diff options
| -rw-r--r-- | python-ethtool/etherinfo.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/python-ethtool/etherinfo.c b/python-ethtool/etherinfo.c index c5e6798..24147bc 100644 --- a/python-ethtool/etherinfo.c +++ b/python-ethtool/etherinfo.c @@ -118,6 +118,9 @@ static int _set_device_index(PyEtherInfo *self) struct nl_cache *link_cache; struct rtnl_link *link; + /* Reset errno, as we will use it to report errors further on */ + errno = 0; + /* Find the interface index we're looking up. * As we don't expect it to change, we're reusing a "cached" * interface index if we have that @@ -129,6 +132,7 @@ static int _set_device_index(PyEtherInfo *self) link = rtnl_link_get_by_name(link_cache, PyString_AsString(self->device)); if( !link ) { + errno = ENODEV; nl_cache_free(link_cache); return 0; } @@ -177,6 +181,9 @@ int get_etherinfo_link(PyEtherInfo *self) } if( _set_device_index(self) != 1) { + if( errno != 0 ) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + } return 0; } @@ -227,6 +234,9 @@ PyObject * get_etherinfo_address(PyEtherInfo *self, nlQuery query) } if( _set_device_index(self) != 1) { + if( errno != 0 ) { + return PyErr_SetFromErrno(PyExc_IOError); + } return NULL; } |