#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/hhook.h>
#include <sys/khelp.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/module_khelp.h>
#include <sys/osd.h>
#include <sys/queue.h>
#include <sys/refcount.h>
#include <sys/systm.h>
#include <net/vnet.h>

Include dependency graph for kern_hhook.c:

Data Structures
struct	hhook

Macros
#define	V_hhook_vhead_list VNET(hhook_vhead_list)

#define	HHHLIST_LOCK() mtx_lock(&hhook_head_list_lock)

#define	HHHLIST_UNLOCK() mtx_unlock(&hhook_head_list_lock)

#define	HHHLIST_LOCK_ASSERT() mtx_assert(&hhook_head_list_lock, MA_OWNED)

#define	HHH_LOCK_INIT(hhh) rm_init(&(hhh)->hhh_lock, "hhook_head rm lock")

#define	HHH_LOCK_DESTROY(hhh) rm_destroy(&(hhh)->hhh_lock)

#define	HHH_WLOCK(hhh) rm_wlock(&(hhh)->hhh_lock)

#define	HHH_WUNLOCK(hhh) rm_wunlock(&(hhh)->hhh_lock)

#define	HHH_RLOCK(hhh, rmpt) rm_rlock(&(hhh)->hhh_lock, (rmpt))

#define	HHH_RUNLOCK(hhh, rmpt) rm_runlock(&(hhh)->hhh_lock, (rmpt))

Functions
	__FBSDID ("$FreeBSD$")

static	MALLOC_DEFINE (M_HHOOK, "hhook", "Helper hooks are linked off hhook_head lists")

	LIST_HEAD (hhookheadhead, hhook_head)

	VNET_DEFINE (struct hhookheadhead, hhook_vhead_list)

	MTX_SYSINIT (hhookheadlistlock, &hhook_head_list_lock, "hhook_head list lock", MTX_DEF)

static void	hhook_head_destroy (struct hhook_head *hhh)

void	khelp_new_hhook_registered (struct hhook_head *hhh, uint32_t flags)

void	hhook_run_hooks (struct hhook_head hhh, void ctx_data, struct osd *hosd)

int	hhook_add_hook (struct hhook_head hhh, struct hookinfo hki, uint32_t flags)

int	hhook_add_hook_lookup (struct hookinfo *hki, uint32_t flags)

int	hhook_remove_hook (struct hhook_head hhh, struct hookinfo hki)

int	hhook_remove_hook_lookup (struct hookinfo *hki)

int	hhook_head_register (int32_t hhook_type, int32_t hhook_id, struct hhook_head **hhh, uint32_t flags)

int	hhook_head_deregister (struct hhook_head *hhh)

int	hhook_head_deregister_lookup (int32_t hhook_type, int32_t hhook_id)

struct hhook_head *	hhook_head_get (int32_t hhook_type, int32_t hhook_id)

void	hhook_head_release (struct hhook_head *hhh)

uint32_t	hhook_head_is_virtualised (struct hhook_head *hhh)

uint32_t	hhook_head_is_virtualised_lookup (int32_t hook_type, int32_t hook_id)

static void	hhook_vnet_init (const void *unused __unused)

static void	hhook_vnet_uninit (const void *unused __unused)

	VNET_SYSINIT (hhook_vnet_init, SI_SUB_INIT_IF, SI_ORDER_FIRST, hhook_vnet_init, NULL)

	VNET_SYSUNINIT (hhook_vnet_uninit, SI_SUB_INIT_IF, SI_ORDER_FIRST, hhook_vnet_uninit, NULL)

Variables
struct hhookheadhead	hhook_head_list

static struct mtx	hhook_head_list_lock

static uint32_t	n_hhookheads

Macro Definition Documentation

◆ HHH_LOCK_DESTROY

#define HHH_LOCK_DESTROY ( hhh ) rm_destroy(&(hhh)->hhh_lock)

Definition at line 86 of file kern_hhook.c.

◆ HHH_LOCK_INIT

#define HHH_LOCK_INIT ( hhh ) rm_init(&(hhh)->hhh_lock, "hhook_head rm lock")

Definition at line 85 of file kern_hhook.c.

◆ HHH_RLOCK

#define HHH_RLOCK	(	hhh,
		rmpt
	)	rm_rlock(&(hhh)->hhh_lock, (rmpt))

Definition at line 89 of file kern_hhook.c.

◆ HHH_RUNLOCK

#define HHH_RUNLOCK	(	hhh,
		rmpt
	)	rm_runlock(&(hhh)->hhh_lock, (rmpt))

Definition at line 90 of file kern_hhook.c.

◆ HHH_WLOCK

#define HHH_WLOCK ( hhh ) rm_wlock(&(hhh)->hhh_lock)

Definition at line 87 of file kern_hhook.c.

◆ HHH_WUNLOCK

#define HHH_WUNLOCK ( hhh ) rm_wunlock(&(hhh)->hhh_lock)

Definition at line 88 of file kern_hhook.c.

◆ HHHLIST_LOCK

#define HHHLIST_LOCK ( ) mtx_lock(&hhook_head_list_lock)

Definition at line 81 of file kern_hhook.c.

◆ HHHLIST_LOCK_ASSERT

#define HHHLIST_LOCK_ASSERT ( ) mtx_assert(&hhook_head_list_lock, MA_OWNED)

Definition at line 83 of file kern_hhook.c.

◆ HHHLIST_UNLOCK

#define HHHLIST_UNLOCK ( ) mtx_unlock(&hhook_head_list_lock)

Definition at line 82 of file kern_hhook.c.

◆ V_hhook_vhead_list

#define V_hhook_vhead_list VNET(hhook_vhead_list)

Definition at line 68 of file kern_hhook.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ hhook_add_hook()

int hhook_add_hook	(	struct hhook_head *	hhh,
		struct hookinfo *	hki,
		uint32_t	flags
	)

Definition at line 133 of file kern_hhook.c.

References flags, free(), HHH_WLOCK, HHH_WUNLOCK, hhook::hhk_func, hhook::hhk_helper, hhook::hhk_udata, and malloc().

Referenced by hhook_add_hook_lookup(), and khelp_new_hhook_registered().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_add_hook_lookup()

int hhook_add_hook_lookup	(	struct hookinfo *	hki,
		uint32_t	flags
	)

Definition at line 190 of file kern_hhook.c.

References flags, free(), HHHLIST_LOCK, HHHLIST_UNLOCK, hhook_add_hook(), hhook_head_list, malloc(), and n_hhookheads.

Referenced by khelp_add_hhook().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_head_deregister()

int hhook_head_deregister ( struct hhook_head * hhh )

Definition at line 369 of file kern_hhook.c.

References HHHLIST_LOCK, HHHLIST_UNLOCK, and hhook_head_destroy().

Referenced by hhook_head_deregister_lookup(), and socket_hhook_deregister().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_head_deregister_lookup()

int hhook_head_deregister_lookup	(	int32_t	hhook_type,
		int32_t	hhook_id
	)

Definition at line 391 of file kern_hhook.c.

References hhook_head_deregister(), hhook_head_get(), and hhook_head_release().

Here is the call graph for this function:

◆ hhook_head_destroy()

static void hhook_head_destroy ( struct hhook_head * hhh )

static

Definition at line 344 of file kern_hhook.c.

References free(), HHH_LOCK_DESTROY, HHH_WLOCK, HHH_WUNLOCK, HHHLIST_LOCK_ASSERT, hhook_head_is_virtualised(), and n_hhookheads.

Referenced by hhook_head_deregister(), and hhook_vnet_uninit().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_head_get()

struct hhook_head * hhook_head_get	(	int32_t	hhook_type,
		int32_t	hhook_id
	)

Definition at line 410 of file kern_hhook.c.

References HHHLIST_LOCK, HHHLIST_UNLOCK, hhook_head_is_virtualised(), and hhook_head_list.

Referenced by hhook_head_deregister_lookup(), hhook_head_is_virtualised_lookup(), and hhook_head_register().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_head_is_virtualised()

uint32_t hhook_head_is_virtualised ( struct hhook_head * hhh )

Definition at line 448 of file kern_hhook.c.

Referenced by hhook_head_destroy(), hhook_head_get(), and hhook_head_is_virtualised_lookup().

Here is the caller graph for this function:

◆ hhook_head_is_virtualised_lookup()

uint32_t hhook_head_is_virtualised_lookup	(	int32_t	hook_type,
		int32_t	hook_id
	)

Definition at line 463 of file kern_hhook.c.

References hhook_head_get(), hhook_head_is_virtualised(), and hhook_head_release().

Here is the call graph for this function:

◆ hhook_head_register()

int hhook_head_register	(	int32_t	hhook_type,
		int32_t	hhook_id,
		struct hhook_head **	hhh,
		uint32_t	flags
	)

Definition at line 294 of file kern_hhook.c.

References flags, HHH_LOCK_INIT, HHHLIST_LOCK, HHHLIST_UNLOCK, hhook_head_get(), hhook_head_list, hhook_head_release(), khelp_new_hhook_registered(), malloc(), n_hhookheads, and V_hhook_vhead_list.

Referenced by socket_hhook_register().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_head_release()

void hhook_head_release ( struct hhook_head * hhh )

Definition at line 435 of file kern_hhook.c.

Referenced by hhook_head_deregister_lookup(), hhook_head_is_virtualised_lookup(), and hhook_head_register().

Here is the caller graph for this function:

◆ hhook_remove_hook()

int hhook_remove_hook	(	struct hhook_head *	hhh,
		struct hookinfo *	hki
	)

Definition at line 248 of file kern_hhook.c.

References free(), HHH_WLOCK, HHH_WUNLOCK, hhook::hhk_func, and hhook::hhk_udata.

Referenced by hhook_remove_hook_lookup().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_remove_hook_lookup()

int hhook_remove_hook_lookup ( struct hookinfo * hki )

Definition at line 275 of file kern_hhook.c.

References HHHLIST_LOCK, HHHLIST_UNLOCK, hhook_head_list, and hhook_remove_hook().

Referenced by khelp_deregister_helper(), and khelp_remove_hhook().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ hhook_run_hooks()

void hhook_run_hooks	(	struct hhook_head *	hhh,
		void *	ctx_data,
		struct osd *	hosd
	)

Definition at line 96 of file kern_hhook.c.

References HHH_RLOCK, HHH_RUNLOCK, hhook::hhk_func, hhook::hhk_helper, hhook::hhk_udata, and osd_get().

Here is the call graph for this function:

◆ hhook_vnet_init()

static void hhook_vnet_init ( const void *unused __unused )

static

Definition at line 483 of file kern_hhook.c.

References V_hhook_vhead_list.

◆ hhook_vnet_uninit()

static void hhook_vnet_uninit ( const void *unused __unused )

static

Definition at line 493 of file kern_hhook.c.

References HHHLIST_LOCK, HHHLIST_UNLOCK, hhook_head_destroy(), printf(), and V_hhook_vhead_list.

Here is the call graph for this function:

◆ khelp_new_hhook_registered()

void khelp_new_hhook_registered	(	struct hhook_head *	hhh,
		uint32_t	flags
	)

Definition at line 291 of file kern_khelp.c.

References flags, hhook_add_hook(), KHELP_LIST_RLOCK, KHELP_LIST_RUNLOCK, and printf().

Referenced by hhook_head_register().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ LIST_HEAD()

LIST_HEAD	(	hhookheadhead	,
		hhook_head
	)

◆ MALLOC_DEFINE()

static MALLOC_DEFINE	(	M_HHOOK	,
		"hhook"	,
		"Helper hooks are linked off hhook_head lists"
	)

static

◆ MTX_SYSINIT()

MTX_SYSINIT	(	hhookheadlistlock	,
		&	hhook_head_list_lock,
		"hhook_head list lock"	,
		MTX_DEF
	)

◆ VNET_DEFINE()

VNET_DEFINE	(	struct hhookheadhead	,
		hhook_vhead_list
	)

◆ VNET_SYSINIT()

VNET_SYSINIT	(	hhook_vnet_init	,
		SI_SUB_INIT_IF	,
		SI_ORDER_FIRST	,
		hhook_vnet_init	,
		NULL
	)

◆ VNET_SYSUNINIT()

VNET_SYSUNINIT	(	hhook_vnet_uninit	,
		SI_SUB_INIT_IF	,
		SI_ORDER_FIRST	,
		hhook_vnet_uninit	,
		NULL
	)

Variable Documentation

◆ hhook_head_list

struct hhookheadhead hhook_head_list

Definition at line 66 of file kern_hhook.c.

Referenced by hhook_add_hook_lookup(), hhook_head_get(), hhook_head_register(), and hhook_remove_hook_lookup().

◆ hhook_head_list_lock

struct mtx hhook_head_list_lock

static

Definition at line 70 of file kern_hhook.c.

◆ n_hhookheads

uint32_t n_hhookheads

static

Definition at line 75 of file kern_hhook.c.

Referenced by hhook_add_hook_lookup(), hhook_head_destroy(), and hhook_head_register().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ HHH_LOCK_DESTROY

◆ HHH_LOCK_INIT

◆ HHH_RLOCK

◆ HHH_RUNLOCK

◆ HHH_WLOCK

◆ HHH_WUNLOCK

◆ HHHLIST_LOCK

◆ HHHLIST_LOCK_ASSERT

◆ HHHLIST_UNLOCK

◆ V_hhook_vhead_list

Function Documentation

◆ __FBSDID()

◆ hhook_add_hook()

◆ hhook_add_hook_lookup()

◆ hhook_head_deregister()

◆ hhook_head_deregister_lookup()

◆ hhook_head_destroy()

◆ hhook_head_get()

◆ hhook_head_is_virtualised()

◆ hhook_head_is_virtualised_lookup()

◆ hhook_head_register()

◆ hhook_head_release()

◆ hhook_remove_hook()

◆ hhook_remove_hook_lookup()

◆ hhook_run_hooks()

◆ hhook_vnet_init()

◆ hhook_vnet_uninit()

◆ khelp_new_hhook_registered()

◆ LIST_HEAD()

◆ MALLOC_DEFINE()

◆ MTX_SYSINIT()

◆ VNET_DEFINE()

◆ VNET_SYSINIT()

◆ VNET_SYSUNINIT()

Variable Documentation

◆ hhook_head_list

◆ hhook_head_list_lock

◆ n_hhookheads