pcap_create(3pcap) — Linux manual page


PCAP_CREATE(3PCAP)                                    PCAP_CREATE(3PCAP)

NAME         top

       pcap_create - create a live capture handle

SYNOPSIS         top

       #include <pcap/pcap.h>

       char errbuf[PCAP_ERRBUF_SIZE];

       pcap_t *pcap_create(const char *source, char *errbuf);

DESCRIPTION         top

       pcap_create() is used to create a packet capture handle to look
       at packets on the network.  source is a string that specifies the
       network device to open; on Linux systems with 2.2 or later
       kernels, a source argument of "any" or NULL can be used to
       capture packets from all interfaces.  errbuf is a buffer large
       enough to hold at least PCAP_ERRBUF_SIZE chars.

       The returned handle must be activated with pcap_activate(3PCAP)
       before packets can be captured with it; options for the capture,
       such as promiscuous mode, can be set on the handle before
       activating it.

RETURN VALUE         top

       pcap_create() returns a pcap_t * on success and NULL on failure.
       If NULL is returned, errbuf is filled in with an appropriate
       error message.

SEE ALSO         top


COLOPHON         top

       This page is part of the libpcap (packet capture library)
       project.  Information about the project can be found at 
       ⟨http://www.tcpdump.org/⟩.  If you have a bug report for this
       manual page, see ⟨http://www.tcpdump.org/#patches⟩.  This page
       was obtained from the project's upstream Git repository
       ⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

                             3 January 2014           PCAP_CREATE(3PCAP)