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Diffstat (limited to 'target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-bpf.c')
-rw-r--r--target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-bpf.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-bpf.c b/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-bpf.c
new file mode 100644
index 0000000000..d8006c39bb
--- /dev/null
+++ b/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-bpf.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright (c) 1993, 1994, 1995, 1996, 1998
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/pcap-bpf.c,v 1.1 1999/08/26 10:05:23 johana Exp $ (LBL)";
+#endif
+
+#include <sys/param.h> /* optionally get BSD define */
+#include <sys/time.h>
+#include <sys/timeb.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pcap-int.h"
+
+#include "gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+int
+pcap_stats(pcap_t *p, struct pcap_stat *ps)
+{
+ struct bpf_stat s;
+
+ if (ioctl(p->fd, BIOCGSTATS, (caddr_t)&s) < 0) {
+ sprintf(p->errbuf, "BIOCGSTATS: %s", pcap_strerror(errno));
+ return (-1);
+ }
+
+ ps->ps_recv = s.bs_recv;
+ ps->ps_drop = s.bs_drop;
+ return (0);
+}
+
+int
+pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
+{
+ int cc;
+ int n = 0;
+ register u_char *bp, *ep;
+
+ again:
+ cc = p->cc;
+ if (p->cc == 0) {
+ cc = read(p->fd, (char *)p->buffer, p->bufsize);
+ if (cc < 0) {
+ /* Don't choke when we get ptraced */
+ switch (errno) {
+
+ case EINTR:
+ goto again;
+
+ case EWOULDBLOCK:
+ return (0);
+#if defined(sun) && !defined(BSD)
+ /*
+ * Due to a SunOS bug, after 2^31 bytes, the kernel
+ * file offset overflows and read fails with EINVAL.
+ * The lseek() to 0 will fix things.
+ */
+ case EINVAL:
+ if (lseek(p->fd, 0L, SEEK_CUR) +
+ p->bufsize < 0) {
+ (void)lseek(p->fd, 0L, SEEK_SET);
+ goto again;
+ }
+ /* fall through */
+#endif
+ }
+ sprintf(p->errbuf, "read: %s", pcap_strerror(errno));
+ return (-1);
+ }
+ bp = p->buffer;
+ } else
+ bp = p->bp;
+
+ /*
+ * Loop through each packet.
+ */
+#define bhp ((struct bpf_hdr *)bp)
+ ep = bp + cc;
+ while (bp < ep) {
+ register int caplen, hdrlen;
+ caplen = bhp->bh_caplen;
+ hdrlen = bhp->bh_hdrlen;
+ /*
+ * XXX A bpf_hdr matches a pcap_pkthdr.
+ */
+ (*callback)(user, (struct pcap_pkthdr*)bp, bp + hdrlen);
+ bp += BPF_WORDALIGN(caplen + hdrlen);
+ if (++n >= cnt && cnt > 0) {
+ p->bp = bp;
+ p->cc = ep - bp;
+ return (n);
+ }
+ }
+#undef bhp
+ p->cc = 0;
+ return (n);
+}
+
+static inline int
+bpf_open(pcap_t *p, char *errbuf)
+{
+ int fd;
+ int n = 0;
+ char device[sizeof "/dev/bpf000"];
+
+ /*
+ * Go through all the minors and find one that isn't in use.
+ */
+ do {
+ (void)sprintf(device, "/dev/bpf%d", n++);
+ fd = open(device, O_RDONLY);
+ } while (fd < 0 && errno == EBUSY);
+
+ /*
+ * XXX better message for all minors used
+ */
+ if (fd < 0)
+ sprintf(errbuf, "%s: %s", device, pcap_strerror(errno));
+
+ return (fd);
+}
+
+pcap_t *
+pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
+{
+ int fd;
+ struct ifreq ifr;
+ struct bpf_version bv;
+ u_int v;
+ pcap_t *p;
+
+ p = (pcap_t *)malloc(sizeof(*p));
+ if (p == NULL) {
+ sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
+ return (NULL);
+ }
+ bzero(p, sizeof(*p));
+ fd = bpf_open(p, ebuf);
+ if (fd < 0)
+ goto bad;
+
+ p->fd = fd;
+ p->snapshot = snaplen;
+
+ if (ioctl(fd, BIOCVERSION, (caddr_t)&bv) < 0) {
+ sprintf(ebuf, "BIOCVERSION: %s", pcap_strerror(errno));
+ goto bad;
+ }
+ if (bv.bv_major != BPF_MAJOR_VERSION ||
+ bv.bv_minor < BPF_MINOR_VERSION) {
+ sprintf(ebuf, "kernel bpf filter out of date");
+ goto bad;
+ }
+ v = 32768; /* XXX this should be a user-accessible hook */
+ /* 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 use the standard
+ * buffer size.
+ */
+ (void) ioctl(fd, BIOCSBLEN, (caddr_t)&v);
+
+ (void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
+ if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) < 0) {
+ sprintf(ebuf, "%s: %s", device, pcap_strerror(errno));
+ goto bad;
+ }
+ /* Get the data link layer type. */
+ if (ioctl(fd, BIOCGDLT, (caddr_t)&v) < 0) {
+ sprintf(ebuf, "BIOCGDLT: %s", pcap_strerror(errno));
+ goto bad;
+ }
+#if _BSDI_VERSION - 0 >= 199510
+ /* The SLIP and PPP link layer header changed in BSD/OS 2.1 */
+ switch (v) {
+
+ case DLT_SLIP:
+ v = DLT_SLIP_BSDOS;
+ break;
+
+ case DLT_PPP:
+ v = DLT_PPP_BSDOS;
+ break;
+ }
+#endif
+ p->linktype = v;
+
+ /* set timeout */
+ if (to_ms != 0) {
+ struct timeval to;
+ to.tv_sec = to_ms / 1000;
+ to.tv_usec = (to_ms * 1000) % 1000000;
+ if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
+ sprintf(ebuf, "BIOCSRTIMEOUT: %s",
+ pcap_strerror(errno));
+ goto bad;
+ }
+ }
+ if (promisc)
+ /* set promiscuous mode, okay if it fails */
+ (void)ioctl(p->fd, BIOCPROMISC, NULL);
+
+ if (ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) {
+ sprintf(ebuf, "BIOCGBLEN: %s", pcap_strerror(errno));
+ goto bad;
+ }
+ p->bufsize = v;
+ p->buffer = (u_char *)malloc(p->bufsize);
+ if (p->buffer == NULL) {
+ sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
+ goto bad;
+ }
+
+ return (p);
+ bad:
+ (void)close(fd);
+ free(p);
+ return (NULL);
+}
+
+int
+pcap_setfilter(pcap_t *p, struct bpf_program *fp)
+{
+ if (p->sf.rfile != NULL)
+ p->fcode = *fp;
+ else if (ioctl(p->fd, BIOCSETF, (caddr_t)fp) < 0) {
+ sprintf(p->errbuf, "BIOCSETF: %s", pcap_strerror(errno));
+ return (-1);
+ }
+ return (0);
+}