Author: luigi
Date: Thu Oct 2 21:34:52 2014
New Revision: 272451
URL: https://svnweb.freebsd.org/changeset/base/272451
Log:
add CAP_EVENT for the libpcap device so we will be able to use
pcap--netmap which does poll() on the file descriptor
MFC after: 2 weeks
Modified:
head/contrib/tcpdump/tcpdump.c
Modified: head/contrib/tcpdump/tcpdump.c
==============================================================================
--- head/contrib/tcpdump/tcpdump.c Thu Oct 2 21:19:13 2014
(r272450)
+++ head/contrib/tcpdump/tcpdump.c Thu Oct 2 21:34:52 2014
(r272451)
@@ -1533,7 +1533,12 @@ main(int argc, char **argv)
if (RFileName == NULL && VFileName == NULL) {
static const unsigned long cmds[] = { BIOCGSTATS };
- cap_rights_init(&rights, CAP_IOCTL, CAP_READ);
+ /*
+ * the various libpcap devices use a combination of
+ * read (bpf), ioctl (bpf, netmap), poll (netmap)
+ * so we add the relevant access rights.
+ */
+ cap_rights_init(&rights, CAP_IOCTL, CAP_READ, CAP_EVENT);
if (cap_rights_limit(pcap_fileno(pd), &rights) < 0 &&
errno != ENOSYS) {
error("unable to limit pcap descriptor");
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