diff options
| -rw-r--r-- | sysdep/unix/sync-if.c | 5 |
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) { |