sys/zfs_onexit.h File Reference

#include <sys/zfs_context.h>

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Data Structures
struct	zfs_onexit
struct	zfs_onexit_action_node
Typedefs
typedef struct zfs_onexit	zfs_onexit_t
typedef struct zfs_onexit_action_node	zfs_onexit_action_node_t
Functions
void	zfs_onexit_init (zfs_onexit_t **zo)
void	zfs_onexit_destroy (zfs_onexit_t *zo)
int	zfs_onexit_fd_hold (int fd, minor_t *minorp)
	Consumers might need to operate by minor number instead of fd, since they might be running in another thread (e.g.
void	zfs_onexit_fd_rele (int fd)
int	zfs_onexit_add_cb (minor_t minor, void(*func)(void *), void *data, uint64_t *action_handle)
	Add a callback to be invoked when the calling process exits.
int	zfs_onexit_del_cb (minor_t minor, uint64_t action_handle, boolean_t fire)
	Delete the callback.
int	zfs_onexit_cb_data (minor_t minor, uint64_t action_handle, void **data)
	Return the data associated with this callback.

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Typedef Documentation

typedef struct zfs_onexit_action_node zfs_onexit_action_node_t

typedef struct zfs_onexit zfs_onexit_t

---

Function Documentation

int zfs_onexit_add_cb	(	minor_t	minor,
		void(*)(void *)	func,
		void *	data,
		uint64_t *	action_handle
	)

Add a callback to be invoked when the calling process exits.

Definition at line 155 of file zfs_onexit.c.

int zfs_onexit_cb_data	(	minor_t	minor,
		uint64_t	action_handle,
		void **	data
	)

Return the data associated with this callback.

This allows consumers of the cleanup-on-exit interfaces to stash kernel data across system calls, knowing that it will be cleaned up if the calling process exits.

Definition at line 236 of file zfs_onexit.c.

int zfs_onexit_del_cb	(	minor_t	minor,
		uint64_t	action_handle,
		boolean_t	fire
	)

Delete the callback.

Parameters:

[in]

fire

trigger the callback if set

Definition at line 204 of file zfs_onexit.c.

void zfs_onexit_destroy

(

zfs_onexit_t *

zo

)

Definition at line 87 of file zfs_onexit.c.

int zfs_onexit_fd_hold	(	int	fd,
		minor_t *	minorp
	)

Consumers might need to operate by minor number instead of fd, since they might be running in another thread (e.g.

txg_sync_thread). Callers of this function must call zfs_onexit_fd_rele() when they're finished using the minor number.

Definition at line 123 of file zfs_onexit.c.

void zfs_onexit_fd_rele

(

int

fd

)

Definition at line 146 of file zfs_onexit.c.

void zfs_onexit_init

(

zfs_onexit_t **

zo

)

Definition at line 76 of file zfs_onexit.c.