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1/*
2 * Copyright (c) 1990, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from the Stanford/CMU enet packet filter,
6 * (net/enet.c) distributed as part of 4.3BSD, and code contributed
7 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
8 * Berkeley Laboratory.

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32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)bpf.c 8.2 (Berkeley) 3/28/94
39 *
40 * $Id: bpf.c,v 1.43 1998/10/04 23:04:48 alex Exp $
40 * $Id: bpf.c,v 1.44 1998/10/08 00:32:08 alex Exp $
41 */
42
43#include "bpfilter.h"
44
45#if NBPFILTER > 0
46
47#ifndef __GNUC__
48#define inline

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56#include <sys/malloc.h>
57#include <sys/mbuf.h>
58#include <sys/time.h>
59#include <sys/proc.h>
60#include <sys/signalvar.h>
61#include <sys/filio.h>
62#include <sys/sockio.h>
63#include <sys/ttycom.h>
64#include <sys/filedesc.h>
65
66#if defined(sparc) && BSD < 199103
67#include <sys/stream.h>
68#endif
69#include <sys/poll.h>
70
71#include <sys/socket.h>
72#include <sys/vnode.h>

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375 dev_t dev;
376 int flags;
377 int fmt;
378 struct proc *p;
379{
380 register struct bpf_d *d = &bpf_dtab[minor(dev)];
381 register int s;
382
383 funsetown(d->bd_sigio);
384 s = splimp();
385 if (d->bd_bif)
386 bpf_detachd(d);
387 splx(s);
388 bpf_freed(d);
389
390 return (0);
391}

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534 */
535static inline void
536bpf_wakeup(d)
537 register struct bpf_d *d;
538{
539 struct proc *p;
540
541 wakeup((caddr_t)d);
540 if (d->bd_async && d->bd_sig)
541 if (d->bd_pgid > 0)
542 gsignal (d->bd_pgid, d->bd_sig);
543 else if (p = pfind (-d->bd_pgid))
544 psignal (p, d->bd_sig);
542 if (d->bd_async && d->bd_sig && d->bd_sigio)
543 pgsigio(d->bd_sigio, d->bd_sig, 0);
544
545#if BSD >= 199103
546 selwakeup(&d->bd_sel);
547 /* XXX */
548 d->bd_sel.si_pid = 0;
549#else
550 if (d->bd_selproc) {
551 selwakeup(d->bd_selproc, (int)d->bd_selcoll);

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828
829 case FIONBIO: /* Non-blocking I/O */
830 break;
831
832 case FIOASYNC: /* Send signal on receive packets */
833 d->bd_async = *(int *)addr;
834 break;
835
837/* N.B. ioctl (FIOSETOWN) and fcntl (F_SETOWN) both end up doing the
838 equivalent of a TIOCSPGRP and hence end up here. *However* TIOCSPGRP's arg
839 is a process group if it's positive and a process id if it's negative. This
840 is exactly the opposite of what the other two functions want! Therefore
841 there is code in ioctl and fcntl to negate the arg before calling here. */
836 case FIOSETOWN:
837 error = fsetown(*(int *)addr, &d->bd_sigio);
838 break;
839
843 case TIOCSPGRP: /* Process or group to send signals to */
844 d->bd_pgid = *(int *)addr;
840 case FIOGETOWN:
841 *(int *)addr = fgetown(d->bd_sigio);
842 break;
843
844 /* This is deprecated, FIOSETOWN should be used instead. */
845 case TIOCSPGRP:
846 error = fsetown(-(*(int *)addr), &d->bd_sigio);
847 break;
848
849 /* This is deprecated, FIOGETOWN should be used instead. */
850 case TIOCGPGRP:
848 *(int *)addr = d->bd_pgid;
851 *(int *)addr = -fgetown(d->bd_sigio);
852 break;
853
854 case BIOCSRSIG: /* Set receive signal */
855 {
856 u_int sig;
857
858 sig = *(u_int *)addr;
859

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