Set D_TRACKCLOSE to avoid a race in devfs that could lead to orphaned bpf

devices never getting fully closed. MFC after: 3 days
2008-05-09 19:29:08 +00:00 · 2008-05-09 19:29:08 +00:00 · 7fb547c7f5
commit 7fb547c7f5
parent 084bc6a480
1 changed files with 1 additions and 0 deletions
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@ -140,6 +140,7 @@ static	d_kqfilter_t	bpfkqfilter;

 static struct cdevsw bpf_cdevsw = {
 	.d_version =	D_VERSION,
+	.d_flags =	D_TRACKCLOSE,
 	.d_open =	bpfopen,
 	.d_close =	bpfclose,
 	.d_read =	bpfread,