check sysctl return value

From: Gleydson Soares <gsoares@gmail.com>, ryan ok

diff --git a/sbin/pfctl/pfctl.c b/sbin/pfctl/pfctl.c
index 76b6e79..f01b6a9 100644 (file)
--- a/sbin/pfctl/pfctl.c
+++ b/sbin/pfctl/pfctl.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pfctl.c,v 1.276 2008/05/27 08:14:57 mcbride Exp $ */
+/*     $OpenBSD: pfctl.c,v 1.277 2008/07/24 10:52:43 henning Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -1573,7 +1573,8 @@ pfctl_init_options(struct pfctl *pf)
        mib[0] = CTL_HW;
        mib[1] = HW_PHYSMEM64;
        size = sizeof(mem);
-       (void) sysctl(mib, 2, &mem, &size, NULL, 0);
+       if (sysctl(mib, 2, &mem, &size, NULL, 0) == -1)
+               err(1, "sysctl");
        if (mem <= 100*1024*1024)
                pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT_SMALL;