lgcosta
5323ee2c71
- pfk_hooks: PRE→PF_IN, LOCAL_OUT/POST→PF_OUT v4+v6; replacement/buffer handling with NF_STOLEN + re-injection (documented divergence: re-entry) - pfk_mod: pf_status_init/pfattach + pfi attach via pfk_if event callback - pfk_kern: NET_LOCK holder reentrancy (fix deadlock when notifier fires under the write lock — observed as full-VM network hang) - tools: static pfctl link for musl VMs
64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
/* PFLINUX: <sys/refcnt.h> — userland twin of
|
|
* module/include/compat/sys/refcnt.h. The kernel side is
|
|
* `struct refcnt { refcount_t rc; }` where refcount_t wraps a single
|
|
* atomic_t (4 bytes on Linux). Only struct pf_anchor embeds it and
|
|
* pf_anchor never crosses /dev/pf, but size/alignment are kept equal. */
|
|
#ifndef _PFLINUX_SYS_REFCNT_H
|
|
#define _PFLINUX_SYS_REFCNT_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
struct refcnt {
|
|
unsigned int rc;
|
|
};
|
|
|
|
#define REFCNT_INITIALIZER { .rc = 1 }
|
|
|
|
static inline void
|
|
refcnt_init(struct refcnt *r, unsigned int v)
|
|
{
|
|
r->rc = v ? v : 1;
|
|
}
|
|
|
|
static inline unsigned int
|
|
refcnt_value(const struct refcnt *r)
|
|
{
|
|
return (r->rc);
|
|
}
|
|
|
|
static inline void
|
|
refcnt_take(struct refcnt *r)
|
|
{
|
|
r->rc++;
|
|
}
|
|
|
|
static inline int
|
|
refcnt_take_not0(struct refcnt *r)
|
|
{
|
|
if (r->rc == 0)
|
|
return (0);
|
|
r->rc++;
|
|
return (1);
|
|
}
|
|
|
|
static inline unsigned int
|
|
refcnt_rele(struct refcnt *r)
|
|
{
|
|
return (--r->rc);
|
|
}
|
|
|
|
static inline unsigned int
|
|
refcnt_rele_wake(struct refcnt *r)
|
|
{
|
|
return (refcnt_rele(r));
|
|
}
|
|
|
|
static inline void
|
|
refcnt_finalize(struct refcnt *r, const void *unused)
|
|
{
|
|
(void)r;
|
|
(void)unused;
|
|
}
|
|
|
|
#endif /* _PFLINUX_SYS_REFCNT_H */
|