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libpcap
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If an interface doesn't support SIOC{G,S}IFMEDIA, just report it as not 

supporting monitor mode.
This commit is contained in:
guy 2008-04-05 04:33:34 +00:00
parent 56ef271897
commit 4e6a56a9ab
1 changed files with 9 additions and 2 deletions
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11
pcap-bpf.c
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@ -20,7 +20,7 @@
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.99.2.5 2008-04-04 19:39:05 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.99.2.6 2008-04-05 04:33:34 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -1676,7 +1676,14 @@ monitor_mode(pcap_t *p, int set)
/*
* Can't get the media types.
*/
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFMEDIA: %s",
if (errno == EINVAL) {
/*
* Interface doesn't support SIOC{G,S}IFMEDIA.
*/
close(sock);
return (PCAP_ERROR_RFMON_NOTSUP);
}
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFMEDIA 1: %s",
pcap_strerror(errno));
close(sock);
return (PCAP_ERROR);