Date: Wed, 31 Oct 2001 14:33:35 +1100 (EST) From: Edwin Groothuis <edwin@mavetju.org> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/31649: libpcap doesn't work with -pthread Message-ID: <20011031033335.C1959B4@k7.mavetju.org>
next in thread | raw e-mail | index | archive | help
>Number: 31649
>Category: bin
>Synopsis: libpcap doesn't work with -pthread
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Oct 30 19:40:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Edwin Groothuis
>Release: FreeBSD 4.4-RELEASE i386
>Organization:
-
>Environment:
System: FreeBSD k7.mavetju.org 4.4-RELEASE FreeBSD 4.4-RELEASE #0: Thu Oct 4 08:49:05 EST 2001 edwin@k7.mavetju.org:/usr/src/sys/compile/k7 i386
A normal 4.4 machine, build from the distribution cdrom
>Description:
When compiling a program which listens to a network device via the
pcap-library with -pthread, it stops working in the pcap_loop()
bits.
>How-To-Repeat:
#include <pcap.h>
#include <net/bpf.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/ioctl.h>
pcap_t *pd = NULL;
char *dev = "fxp0";
int link_offset;
int link_type;
int snaplen = 65535, promisc = 1, to = 1000;
char pc_err[PCAP_ERRBUF_SIZE];
void networkinit(void) {
if ((pd = pcap_open_live(dev, snaplen, promisc, to, pc_err)) == NULL) {
perror(pc_err);
exit(-1);
}
}
void process(u_char *data1, struct pcap_pkthdr* h, u_char *p) {
fprintf(stderr,".");
}
void networkrun(void) {
while (pcap_loop(pd, 0, (pcap_handler)process, 0));
exit(-2);
}
int main(void) {
networkinit();
networkrun();
}
(You might have to tweak the fxp0 in the dev-variable)
Compile as "gcc -Wall -o nw nw.c -lpcap". It will print a dot for
every IP packet.
Compile as "gcc -Wall -o nw nw.c -lpcap -pthread". It will print
nothing.
>Fix:
none known.
>Release-Note:
>Audit-Trail:
>Unformatted:
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20011031033335.C1959B4>