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| author | Pavel Machek <pavel@ucw.cz> | 1998-10-13 16:59:46 +0200 |
|---|---|---|
| committer | Pavel Machek <pavel@ucw.cz> | 1998-10-13 16:59:46 +0200 |
| commit | fdf33cde1cd14a2a0215d6d459489e258fe20789 (patch) | |
| tree | 522577ca1a1dd615a73160dc05769397041c0972 | |
| parent | 21580e304f612b276a90d2a90f4fb86569609255 (diff) | |
| download | bird-fdf33cde1cd14a2a0215d6d459489e258fe20789.tar bird-fdf33cde1cd14a2a0215d6d459489e258fe20789.zip | |
Strange, on atrey ioctl() does not fill structure, and bird segfaults
on it. Now we "only" die().
| -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) { |