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--- a/python-ethtool/ethtool.c.orig 2013-08-07 10:37:37.378764077 +0200
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+++ b/python-ethtool/ethtool.c 2013-08-07 10:39:27.111760146 +0200
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@@ -26,6 +26,7 @@
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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+#include <ifaddrs.h>
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#include "etherinfo_struct.h"
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#include "etherinfo_obj.h"
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@@ -54,55 +55,24 @@
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static PyObject *get_active_devices(PyObject *self __unused, PyObject *args __unused)
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{
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PyObject *list;
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- int numreqs = 30;
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- struct ifconf ifc;
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- struct ifreq *ifr;
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- int n;
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+ struct ifaddrs *ifaddr, *ifa;
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- /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
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- (as of 2.1.128) */
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- /* Open control socket. */
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- int skfd = socket(AF_INET, SOCK_DGRAM, 0);
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-
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- if (skfd < 0) {
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+ if (getifaddrs(&ifaddr) == -1) {
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PyErr_SetString(PyExc_OSError, strerror(errno));
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return NULL;
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}
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- ifc.ifc_buf = NULL;
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- for (;;) {
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- ifc.ifc_len = sizeof(struct ifreq) * numreqs;
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- ifc.ifc_buf = realloc(ifc.ifc_buf, ifc.ifc_len);
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-
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- if (ioctl(skfd, SIOCGIFCONF, &ifc) < 0) {
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- PyErr_SetString(PyExc_OSError, strerror(errno));
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- free(ifc.ifc_buf);
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- close(skfd);
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- return NULL;
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- }
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-
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- if (ifc.ifc_len == (int)sizeof(struct ifreq) * numreqs) {
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- /* assume it overflowed and try again */
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- numreqs += 10;
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- continue;
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- }
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- break;
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- }
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-
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list = PyList_New(0);
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- ifr = ifc.ifc_req;
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- for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
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- if (!(ioctl(skfd, SIOCGIFFLAGS, ifr) < 0))
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- if (ifr->ifr_flags & IFF_UP) {
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- PyObject *str = PyString_FromString(ifr->ifr_name);
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- PyList_Append(list, str);
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- Py_DECREF(str);
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- }
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- ifr++;
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+ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
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+ PyObject *str = PyString_FromString(ifa->ifa_name);
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+ /* names are not unique (listed for both ipv4 and ipv6) */
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+ if (!PySequence_Contains(list, str) && (ifa->ifa_flags & (IFF_UP))) {
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+ PyList_Append(list, str);
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+ }
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+ Py_DECREF(str);
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}
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- free(ifc.ifc_buf);
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- close(skfd);
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+ freeifaddrs(ifaddr);
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return list;
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}
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