pcap_lookupdev - find the default device on which to capture
#include <pcap/pcap.h> char errbuf[PCAP_ERRBUF_SIZE]; [DEPRECATED] char *pcap_lookupdev(char *errbuf);
PCAP_LOOKUPDEV(3pcap) PCAP_LOOKUPDEV(3pcap) NAME pcap_lookupdev - find the default device on which to capture SYNOPSIS #include <pcap/pcap.h> char errbuf[PCAP_ERRBUF_SIZE]; [DEPRECATED] char *pcap_lookupdev(char *errbuf); DESCRIPTION This interface is obsoleted by pcap_findalldevs(3PCAP). To find a default device on which to capture, call pcap_findalldevs() and, if the list it returns is not empty, use the first device in the list. (If the list is empty, there are no devices on which capture is possible.) pcap_lookupdev() returns a pointer to a string giving the name of a network device suitable for use with pcap_create(3PCAP) and pcap_activate(3PCAP), or with pcap_open_live(3PCAP), and with pcap_lookupnet(3PCAP). If there is an error, NULL is returned and errbuf is filled in with an appropriate error message. errbuf is assumed to be able to hold at least PCAP_ERRBUF_SIZE chars. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------------+ |Availability | system/library/libpcap | +---------------+------------------------+ |Stability | Uncommitted | +---------------+------------------------+ SEE ALSO pcap(3PCAP) BUGS The pointer returned by pcap_lookupdev() points to a static buffer; subsequent calls to pcap_lookupdev() in the same thread, or calls to pcap_lookupdev() in another thread, may overwrite that buffer. In WinPcap, this function may return a UTF-16 string rather than an ASCII or UTF-8 string. NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://www.tcpdump.org/release/libp- cap-1.9.1.tar.gz. Further information about this software can be found on the open source community website at https://www.tcpdump.org/. 8 September 2017 PCAP_LOOKUPDEV(3pcap)