diff options
Diffstat (limited to 'pcap-snoop.c')
| -rw-r--r-- | pcap-snoop.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/pcap-snoop.c b/pcap-snoop.c index 948d3881..9bf0d261 100644 --- a/pcap-snoop.c +++ b/pcap-snoop.c @@ -221,6 +221,13 @@ pcap_activate_snoop(pcap_t *p) sr.sr_family = AF_RAW; (void)strncpy(sr.sr_ifname, p->opt.source, sizeof(sr.sr_ifname)); if (bind(fd, (struct sockaddr *)&sr, sizeof(sr))) { + /* + * XXX - there's probably a particular bind error that + * means "there's no such device" and a particular bind + * error that means "that device doesn't support snoop"; + * they might be the same error, if they both end up + * meaning "snoop doesn't know about that device". + */ pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snoop bind: %s", pcap_strerror(errno)); goto bad; @@ -411,8 +418,18 @@ pcap_create_interface(const char *device, char *ebuf) return (p); } +/* + * XXX - there's probably a particular bind error that means "that device + * doesn't support snoop"; if so, we should try a bind and use that. + */ +static int +can_be_bound(const char *name _U_) +{ + return (1); +} + int pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) { - return (pcap_findalldevs_interfaces(alldevsp, errbuf)); + return (pcap_findalldevs_interfaces(alldevsp, errbuf, can_be_bound)); } |