maneeshs wrote:
There seems to be a race condition in the above code, the check for the
descriptor being free and the call to D_GET to mark the descriptor as
being used is not atomic. So two closely spaced calls to bpfopen could
cause bpf to use the same device twice ?
Yes, if, in OpenBSD, e
If so, then that open routine:
int
bpfopen(dev_t dev, int flag, int mode, struct proc *p)
{
struct bpf_d *d;
/* create on demand */
if ((d = bpfilter_create(minor(dev))) == NULL)
return (ENXIO);
/*
* Each minor can be opened by only one
