PCAP_LIST_TSTAMP_TYPES
Section: Misc. Reference Manual Pages (3PCAP)
Updated: 8 September 2019
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NAME
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
#include <pcap/pcap.h>
int pcap_list_tstamp_types(pcap_t *p, int **tstamp_typesp);
void pcap_free_tstamp_types(int *tstamp_types);
DESCRIPTION
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
pca-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
tstamp_types.
RETURN VALUE
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.
BACKWARD COMPATIBILITY
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
pcap(3PCAP),
pcap_tstamp_type_val_to_name(3PCAP),
pca-tstamp(7)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- BACKWARD COMPATIBILITY
-
- SEE ALSO
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