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Explicitly check for a positive "cnt" argument, as at least some other 

read_op loops do, to clarify that a zero or negative "cnt" value means
"loop until we run out of packets".
This commit is contained in:
guy 2008-02-02 20:42:35 +00:00
parent d46f258195
commit 43b6c2d818
1 changed files with 2 additions and 2 deletions
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4
pcap-dag.c
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@ -17,7 +17,7 @@
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/pcap-dag.c,v 1.35 2008-01-06 21:25:54 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/pcap-dag.c,v 1.36 2008-02-02 20:42:35 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -538,7 +538,7 @@ dag_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
/* Only count packets that pass the filter, for consistency with standard Linux behaviour. */
processed++;
if (processed == cnt)
if (processed == cnt && cnt > 0)
{
/* Reached the user-specified limit. */
return cnt;