diff options
Diffstat (limited to 'sys/net/bpf.c')
| -rw-r--r-- | sys/net/bpf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c index 63e868e6f3f4..66ee80ae8195 100644 --- a/sys/net/bpf.c +++ b/sys/net/bpf.c @@ -562,6 +562,10 @@ bpfread(struct cdev *dev, struct uio *uio, int ioflag) * Move data from hold buffer into user space. * We know the entire buffer is transferred since * we checked above that the read buffer is bpf_bufsize bytes. + * + * XXXRW: More synchronization needed here: what if a second thread + * issues a read on the same fd at the same time? Don't want this + * getting invalidated. */ error = uiomove(d->bd_hbuf, d->bd_hlen, uio); @@ -574,7 +578,6 @@ bpfread(struct cdev *dev, struct uio *uio, int ioflag) return (error); } - /* * If there are processes sleeping on this descriptor, wake them up. */ |