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rdisc: do not crash on NDP init failures (rh #1012151)

Browse source 
ndp_open() can fail, do not assume it cannot.
When 'ipv6.disable=1' kernel parameter is used, the whole IPv6 stack is
disabled and the attempt to create PF_INET6 socket fails.

https://bugzilla.redhat.com/show_bug.cgi?id=1012151
This commit is contained in:
Jiří Klimeš 2013-09-26 11:18:09 +02:00
parent e69727bf8a
commit 469febc0d9
2 changed files with 16 additions and 7 deletions
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20
src/rdisc/nm-lndp-rdisc.c
View file

@ -50,13 +50,23 @@ G_DEFINE_TYPE (NMLNDPRDisc, nm_lndp_rdisc, NM_TYPE_RDISC)
NMRDisc *
nm_lndp_rdisc_new (int ifindex, const char *ifname)
{
NMRDisc *rdisc = g_object_new (NM_TYPE_LNDP_RDISC, NULL);
NMRDisc *rdisc;
NMLNDPRDiscPrivate *priv;
int error;
rdisc = g_object_new (NM_TYPE_LNDP_RDISC, NULL);
g_assert (rdisc);
rdisc->ifindex = ifindex;
rdisc->ifname = g_strdup (ifname);
priv = NM_LNDP_RDISC_GET_PRIVATE (rdisc);
error = ndp_open (&priv->ndp);
if (error != 0) {
g_object_unref (rdisc);
debug ("(%s): error creating socket for NDP; errno=%d", ifname, -error);
return NULL;
}
return rdisc;
}
@ -594,11 +604,6 @@ start (NMRDisc *rdisc)
static void
nm_lndp_rdisc_init (NMLNDPRDisc *lndp_rdisc)
{
NMLNDPRDiscPrivate *priv = NM_LNDP_RDISC_GET_PRIVATE (lndp_rdisc);
int error;
error = ndp_open (&priv->ndp);
g_assert (!error);
}
static void
@ -615,7 +620,8 @@ nm_lndp_rdisc_finalize (GObject *object)
if (priv->event_id)
g_source_remove (priv->event_id);
ndp_close (priv->ndp);
if (priv->ndp)
ndp_close (priv->ndp);
}
static void

3
src/rdisc/tests/rdisc.c
View file

@ -35,6 +35,9 @@ main (int argc, char **argv)
}
rdisc = new (ifindex, ifname);
if (!rdisc)
return EXIT_FAILURE;
nm_rdisc_set_lladdr (rdisc, mac, 6);
nm_rdisc_start (rdisc);