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pcap_geterr(3pcap) — Linux manual page

PCAP_GETERR(3PCAP)PCAP_GETERR(3PCAP)

NAME        top

       pcap_geterr, pcap_perror - get or print libpcap error message text

SYNOPSIS        top

#include <pcap/pcap.h>char *pcap_geterr(pcap_t *p);void pcap_perror(pcap_t *p, const char *prefix);

DESCRIPTION        top

pcap_geterr() returns the error text pertaining to the last pcap       library error.NOTE: the pointer it returns will no longer point       to a valid error message string after thepcap_tpassed to it is       closed; you must use or copy the string before closing thepcap_t.pcap_perror() prints the text of the last pcap library error onstderr, prefixed byprefix.

SEE ALSO        top

pcap(3PCAP),pcap_strerror(3PCAP)

COLOPHON        top

       This page is part of thelibpcap (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 2025-08-11.       (At that time, the date of the most recent commit that was found       in the repository was 2025-08-10.)  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 isnot part of the original manual page), send a mail to       man-pages@man7.org                             15 January 2016PCAP_GETERR(3PCAP)

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