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22 .TH PCAP_ACTIVATE 3PCAP "5 April 2008"
24 pcap_activate \- activate a capture handle
28 #include <pcap/pcap.h>
32 int pcap_activate(pcap_t *p);
37 is used to activate a packet capture handle to look
38 at packets on the network, with the options that were set on the handle
42 returns 0 on success without warnings,
43 .B PCAP_WARNING_PROMISC_NOTSUP
44 on success on a device that doesn't support promiscuous mode if
45 promiscuous mode was requested,
46 .B PCAP_WARNING_TSTAMP_TYPE_NOTSUP
47 on success if the time stamp type specified in a previous
48 .B pcap_set_tstamp_type()
49 call isn't supported by the capture source (the time stamp type is
52 on success with any other warning,
53 .B PCAP_ERROR_ACTIVATED
54 if the handle has already been activated,
55 .B PCAP_ERROR_NO_SUCH_DEVICE
56 if the capture source specified when the handle was created doesn't
58 .B PCAP_ERROR_PERM_DENIED
59 if the process doesn't have permission to open the capture source,
60 .B PCAP_ERROR_PROMISC_PERM_DENIED
61 if the process has permission to open the capture source but doesn't
62 have permission to put it into promiscuous mode,
63 .B PCAP_ERROR_RFMON_NOTSUP
64 if monitor mode was specified but the capture source doesn't support
66 .B PCAP_ERROR_IFACE_NOT_UP
67 if the capture source is not up, and
69 if another error occurred.
80 as an argument to fetch or display a message describing the warning or
83 .BR PCAP_WARNING_PROMISC_NOTSUP ,
84 .BR PCAP_ERROR_NO_SUCH_DEVICE ,
86 .B PCAP_ERROR_PERM_DENIED
93 as an argument to fetch or display an message giving additional details
94 about the problem that might be useful for debugging the problem if it's