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(pcap_open_live): rewrite BIOCSBLEN loop as a for(). from Guy Harris <gharris@flashcom.net>

This commit is contained in:
assar 2000-07-11 23:02:51 +00:00
parent b113d4f386
commit f4ab57be13
1 changed files with 6 additions and 9 deletions
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15
pcap-bpf.c
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@ -20,7 +20,7 @@
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.36 2000-07-11 23:00:05 assar Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.37 2000-07-11 23:02:51 assar Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -200,9 +200,11 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
* Try finding a good size for the buffer; 32768 may be too
* big, so keep cutting it in half until we find a size
* that works, or run out of sizes to try.
*
* XXX - there should be a user-accessible hook to set the
* initial buffer size.
*/
v = 32768; /* XXX this should be a user-accessible hook */
do {
for (v = 32768; v != 0; v >>= 1) {
/* Ignore the return value - this is because the call fails
* on BPF systems that don't have kernel malloc. And if
* the call fails, it's no big deal, we just continue to
@ -219,12 +221,7 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
device, pcap_strerror(errno));
goto bad;
}
/*
* Try a smaller size.
*/
v >>= 2;
} while (v != 0);
}
if (v == 0) {
snprintf(ebuf, PCAP_ERRBUF_SIZE,