pcap_free_tstamp_types(3pcap) — Linux manual page



NAME         top

       pcap_list_tstamp_types,  pcap_free_tstamp_types  - get a list of time
       stamp types supported by a capture device, and free that list

SYNOPSIS         top

       #include <pcap/pcap.h>

       int pcap_list_tstamp_types(pcap_t *p, int **tstamp_typesp);
       void pcap_free_tstamp_types(int *tstamp_types);

DESCRIPTION         top

       pcap_list_tstamp_types() is used to get a list of the supported time
       stamp types of the interface associated with the pcap descriptor.
       pcap_list_tstamp_types() allocates an array to hold the list and sets
       *tstamp_typesp to point to the array.  See pcap-tstamp(7) for a list
       of all the time stamp types.

       The caller is responsible for freeing the array with
       pcap_free_tstamp_types(), which frees the list pointed to by

RETURN VALUE         top

       pcap_list_tstamp_types() returns the number of time stamp types in
       the array on success and PCAP_ERROR on failure.  A return value of
       one means that the only time stamp type supported is the one in the
       list, which is the capture device's default time stamp type.  A
       return value of zero means that the only time stamp type supported is
       PCAP_TSTAMP_HOST, which is the capture device's default time stamp
       type (only older versions of libpcap will return that; newer versions
       will always return one or more types).  If PCAP_ERROR is returned,
       pcap_geterr(3PCAP) or pcap_perror(3PCAP) may be called with p as an
       argument to fetch or display the error text.


       These functions became available in libpcap release 1.2.1.  In
       previous releases, the time stamp type cannot be set; only the
       default time stamp type offered by a capture source is available.

SEE ALSO         top

       pcap(3PCAP), pcap_tstamp_type_val_to_name(3PCAP), pcap-tstamp(7)

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 2020-09-18.
       (At that time, the date of the most recent commit that was found in
       the repository was 2020-09-15.)  If you discover any rendering prob‐
       lems in this HTML version of the page, or you believe there is a bet‐
       ter 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 man-pages@man7.org

                              8 September 2019 PCAP_LIST_TSTAMP_TYPES(3PCAP)