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1 office 1 .\" Copyright (c) 1994, 1996, 1997
2 .\" The Regents of the University of California. All rights reserved.
3 .\"
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that: (1) source code distributions
6 .\" retain the above copyright notice and this paragraph in its entirety, (2)
7 .\" distributions including binary code include the above copyright notice and
8 .\" this paragraph in its entirety in the documentation or other materials
9 .\" provided with the distribution, and (3) all advertising materials mentioning
10 .\" features or use of this software display the following acknowledgement:
11 .\" ``This product includes software developed by the University of California,
12 .\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
13 .\" the University nor the names of its contributors may be used to endorse
14 .\" or promote products derived from this software without specific prior
15 .\" written permission.
16 .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
17 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
18 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 .\"
20 .TH PCAP_GETERR 3PCAP "5 April 2008"
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, 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)