diff options
| author | gad <gad@FreeBSD.org> | 2001-04-04 23:27:35 +0000 |
|---|---|---|
| committer | gad <gad@FreeBSD.org> | 2001-04-04 23:27:35 +0000 |
| commit | 08f68aa7974a03094e34047f66fa0b3c39b0ad61 (patch) | |
| tree | 4dca80b2d87ce27607d4efb1205a183327ef9973 /sys/net/bpf.c | |
| parent | e1c6e50d7281b90ecadee85d7fea77f46aa92ec7 (diff) | |
| download | FreeBSD-src-08f68aa7974a03094e34047f66fa0b3c39b0ad61.zip FreeBSD-src-08f68aa7974a03094e34047f66fa0b3c39b0ad61.tar.gz | |
Fix bpf devices so select() recognizes that they are always writable.
PR: 9355
Submitted by: Bruce Evans <bde@zeta.org.au>
Reviewed by: Garrett Rooney <rooneg@electricjellyfish.net> (see pr :-)
Diffstat (limited to 'sys/net/bpf.c')
| -rw-r--r-- | sys/net/bpf.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c index 74a8c5b..c947c1a 100644 --- a/sys/net/bpf.c +++ b/sys/net/bpf.c @@ -972,18 +972,21 @@ bpfpoll(dev, events, p) struct proc *p; { struct bpf_d *d; - int revents = 0; + int revents; - /* - * An imitation of the FIONREAD ioctl code. - */ d = dev->si_drv1; - if (d->bd_bif == NULL) return (ENXIO); + revents = events & (POLLOUT | POLLWRNORM); BPFD_LOCK(d); if (events & (POLLIN | POLLRDNORM)) { + /* + * An imitation of the FIONREAD ioctl code. + * XXX not quite. An exact imitation: + * if (d->b_slen != 0 || + * (d->bd_hbuf != NULL && d->bd_hlen != 0) + */ if (d->bd_hlen != 0 || (d->bd_immediate && d->bd_slen != 0)) revents |= events & (POLLIN | POLLRDNORM); else |
