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  20 .TH PCAP_GETERR 3PCAP "3 January 2014"
  21 .SH NAME
  22 pcap_geterr, pcap_perror \- get or print libpcap error message text
  23 .SH SYNOPSIS
  24 .nf
  25 .ft B
  26 #include <pcap/pcap.h>
  27 .ft
  28 .LP
  29 .ft B
  30 char *pcap_geterr(pcap_t *p);
  31 void pcap_perror(pcap_t *p, const char *prefix);
  32 .ft
  33 .fi
  34 .SH DESCRIPTION
  35 .B pcap_geterr()
  36 returns the error text pertaining to the last pcap library error.
  37 .BR NOTE :
  38 the pointer it returns will no longer point to a valid error message
  39 string after the
  40 .B pcap_t
  41 passed to it is closed; you must use or copy the string before closing
  42 the
  43 .BR pcap_t .
  44 .PP
  45 .B pcap_perror()
  46 prints the text of the last pcap library error on
  47 .BR stderr ,
  48 prefixed by
  49 .IR prefix .
  50 .SH SEE ALSO
  51 pcap(3PCAP)