Author: loos
Date: Sat Jul 5 20:16:02 2014
New Revision: 268301
URL: http://svnweb.freebsd.org/changeset/base/268301
Log:
Check the number of returned entries before doing any access to ifm_ulist.
Modified:
head/sbin/etherswitchcfg/etherswitchcfg.c
Modified: head/sbin/etherswitchcfg/etherswitchcfg.c
==============================================================================
--- head/sbin/etherswitchcfg/etherswitchcfg.c Sat Jul 5 20:08:35 2014
(r268300)
+++ head/sbin/etherswitchcfg/etherswitchcfg.c Sat Jul 5 20:16:02 2014
(r268301)
@@ -235,6 +235,8 @@ set_port_media(struct cfg *cfg, char *ar
p.es_ifmr.ifm_count = IFMEDIAREQ_NULISTENTRIES;
if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
+ if (p.es_ifmr.ifm_count == 0)
+ return;
subtype = get_media_subtype(IFM_TYPE(ifm_ulist[0]), argv[1]);
p.es_ifr.ifr_media = (p.es_ifmr.ifm_current & IFM_IMASK) |
IFM_TYPE(ifm_ulist[0]) | subtype;
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