From: Guy Harris <guy@alum.mit.edu>
Date: Mon, 14 May 2018 10:00:20 +0000 (-0700)
Subject: UN*X - the OS family with at least 4 ways of saying "no can do" for an ioctl.
X-Git-Tag: libpcap-1.9-bp~30
X-Git-Url: https://git.tcpdump.org/libpcap/commitdiff_plain/5ed387fda83b80d7844ea525d5f8849ca9b0cc25?hp=--cc

UN*X - the OS family with at least 4 ways of saying "no can do" for an ioctl.

Here's number 4 - ENODEV, in addition to EOPNOTSUPP and EINVAL and
ENOTTY.
---

5ed387fda83b80d7844ea525d5f8849ca9b0cc25
diff --git a/pcap-bpf.c b/pcap-bpf.c
index 9f4c62b5..6ce383b0 100644
--- a/pcap-bpf.c
+++ b/pcap-bpf.c
@@ -2747,7 +2747,8 @@ get_if_flags(const char *name, bpf_u_int32 *flags, char *errbuf)
 	memset(&req, 0, sizeof(req));
 	strncpy(req.ifm_name, name, sizeof(req.ifm_name));
 	if (ioctl(sock, SIOCGIFMEDIA, &req) < 0) {
-		if (errno == EOPNOTSUPP || errno == EINVAL || errno == ENOTTY) {
+		if (errno == EOPNOTSUPP || errno == EINVAL || errno == ENOTTY ||
+		    errno == ENODEV) {
 			/*
 			 * Not supported, so we can't provide any
 			 * additional information.  Assume that