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authorPavel Machek <pavel@ucw.cz>1998-10-13 16:59:46 +0200
committerPavel Machek <pavel@ucw.cz>1998-10-13 16:59:46 +0200
commitfdf33cde1cd14a2a0215d6d459489e258fe20789 (patch)
tree522577ca1a1dd615a73160dc05769397041c0972 /sysdep/unix
parent21580e304f612b276a90d2a90f4fb86569609255 (diff)
downloadbird-fdf33cde1cd14a2a0215d6d459489e258fe20789.tar
bird-fdf33cde1cd14a2a0215d6d459489e258fe20789.zip
Strange, on atrey ioctl() does not fill structure, and bird segfaults
on it. Now we "only" die().
Diffstat (limited to 'sysdep/unix')
-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)
{