diff options
Diffstat (limited to 'sbin/route/route.c')
| -rw-r--r-- | sbin/route/route.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/sbin/route/route.c b/sbin/route/route.c index 45460e1321c..c623d4ff7a8 100644 --- a/sbin/route/route.c +++ b/sbin/route/route.c @@ -1,4 +1,4 @@ -/* $OpenBSD: route.c,v 1.160 2012/12/04 02:30:33 deraadt Exp $ */ +/* $OpenBSD: route.c,v 1.161 2013/03/21 04:43:17 deraadt Exp $ */ /* $NetBSD: route.c,v 1.16 1996/04/15 18:27:05 cgd Exp $ */ /* @@ -286,14 +286,20 @@ flushroutes(int argc, char **argv) mib[4] = NET_RT_DUMP; mib[5] = 0; /* no flags */ mib[6] = tableid; - if (sysctl(mib, 7, NULL, &needed, NULL, 0) < 0) - err(1, "route-sysctl-estimate"); - if (needed) { - if ((buf = malloc(needed)) == NULL) - err(1, "malloc"); - if (sysctl(mib, 7, buf, &needed, NULL, 0) < 0) + while (1) { + if (sysctl(mib, 7, NULL, &needed, NULL, 0) == -1) + err(1, "route-sysctl-estimate"); + if (needed == 0) + break; + if ((buf = realloc(buf, needed)) == NULL) + err(1, "realloc"); + if (sysctl(mib, 7, buf, &needed, NULL, 0) == -1) { + if (errno == ENOMEM) + continue; err(1, "actual retrieval of routing table"); + } lim = buf + needed; + break; } if (verbose) { printf("Examining routing table from sysctl\n"); |