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-rw-r--r--sysdep/unix/sync-if.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdep/unix/sync-if.c b/sysdep/unix/sync-if.c
index 641565f..44f93f5 100644
--- a/sysdep/unix/sync-if.c
+++ b/sysdep/unix/sync-if.c
@@ -140,7 +140,7 @@ scan_if(timer *t)
ic.ifc_ifcu.ifcu_req = r;
ic.ifc_len = last_ifbuf_size;
res = ioctl(if_scan_sock, SIOCGIFCONF, &ic);
- if (res < 0 && errno != EFAULT)
+ if (res < 0 && errno != EFAULT) /* FIXME: I would sigsegv you if I were kernel at this point */
die("SIOCCGIFCONF: %m");
if (res < last_ifbuf_size)
{
@@ -149,8 +149,11 @@ scan_if(timer *t)
}
}
ic.ifc_ifcu.ifcu_req = NULL;
+ ic.ifc_len = 999999999;
if (ioctl(if_scan_sock, SIOCGIFCONF, &ic) < 0)
die("SIOCIFCONF: %m");
+ if (ic.ifc_len > 100*1024)
+ die("Buf size MUCH too big: %d\n", ic.ifc_len);
ic.ifc_len += sizeof(struct ifreq);
if (last_ifbuf_size < ic.ifc_len)
{