#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/sysmacros.h>
#include <sys/resource.h>
#include <sys/mntent.h>
#include <sys/u8_textprep.h>
#include <sys/dsl_dataset.h>
#include <sys/vfs.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/kmem.h>
#include <sys/errno.h>
#include <sys/unistd.h>
#include <sys/atomic.h>
#include <sys/zfs_dir.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_rlock.h>
#include <sys/zfs_fuid.h>
#include <sys/dnode.h>
#include <sys/fs/zfs.h>
#include <sys/kidmap.h>
#include <sys/dmu.h>
#include <sys/refcount.h>
#include <sys/stat.h>
#include <sys/zap.h>
#include <sys/zfs_znode.h>
#include <sys/sa.h>
#include <sys/zfs_sa.h>
#include <sys/zfs_stat.h>
#include "zfs_prop.h"
#include "zfs_comutil.h"

Include dependency graph for zfs_znode.c:

Defines
#define	ZNODE_STAT_ADD(stat)
	Define ZNODE_STATS to turn on statistic gathering.
#define	NBITSMINOR64 32
#define	MAXMAJ64 0xffffffffUL
#define	MAXMIN64 0xffffffffUL
Functions
	SYSCTL_INT (_debug_sizeof, OID_AUTO, znode, CTLFLAG_RD, 0, sizeof(znode_t),"sizeof(znode_t)")
static void	znode_evict_error (dmu_buf_t dbuf, void user_ptr)
static int	zfs_znode_cache_constructor (void buf, void arg, int kmflags)
static void	zfs_znode_cache_destructor (void buf, void arg)
void	zfs_znode_init (void)
void	zfs_znode_fini (void)
int	zfs_create_share_dir (zfsvfs_t zfsvfs, dmu_tx_t tx)
static uint64_t	zfs_expldev (dev_t dev)
	Create special expldev for ZFS private use.
dev_t	zfs_cmpldev (uint64_t dev)
	Special cmpldev for ZFS private use.
static void	zfs_znode_sa_init (zfsvfs_t zfsvfs, znode_t zp, dmu_buf_t db, dmu_object_type_t obj_type, sa_handle_t sa_hdl)
void	zfs_znode_dmu_fini (znode_t *zp)
static void	zfs_vnode_forget (vnode_t *vp)
static znode_t *	zfs_znode_alloc (zfsvfs_t zfsvfs, dmu_buf_t db, int blksz, dmu_object_type_t obj_type, sa_handle_t *hdl)
	Construct a new znode/vnode and intialize.
void	zfs_mknode (znode_t dzp, vattr_t vap, dmu_tx_t tx, cred_t cr, uint_t flag, znode_t *zpp, zfs_acl_ids_t acl_ids)
	Create a new DMU object to hold a zfs znode.
void	zfs_xvattr_set (znode_t zp, xvattr_t xvap, dmu_tx_t *tx)
	Update in-core attributes.
int	zfs_zget (zfsvfs_t zfsvfs, uint64_t obj_num, znode_t *zpp)
int	zfs_rezget (znode_t *zp)
void	zfs_znode_delete (znode_t zp, dmu_tx_t tx)
void	zfs_zinactive (znode_t *zp)
void	zfs_znode_free (znode_t *zp)
void	zfs_tstamp_update_setup (znode_t *zp, uint_t flag, uint64_t mtime[2], uint64_t ctime[2], boolean_t have_tx)
void	zfs_grow_blocksize (znode_t zp, uint64_t size, dmu_tx_t tx)
	Grow the block size for a file.
static int	zfs_extend (znode_t *zp, uint64_t end)
	Increase the file length.
static int	zfs_free_range (znode_t *zp, uint64_t off, uint64_t len)
	Free space in a file.
static int	zfs_trunc (znode_t *zp, uint64_t end)
	Truncate a file.
int	zfs_freesp (znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log)
	Free space in a file.
void	zfs_create_fs (objset_t os, cred_t cr, nvlist_t zplprops, dmu_tx_t tx)
static int	zfs_sa_setup (objset_t osp, sa_attr_type_t *sa_table)
static int	zfs_grab_sa_handle (objset_t osp, uint64_t obj, sa_handle_t hdlp, dmu_buf_t db, void tag)
void	zfs_release_sa_handle (sa_handle_t hdl, dmu_buf_t db, void *tag)
static int	zfs_obj_to_pobj (objset_t osp, sa_handle_t hdl, sa_attr_type_t sa_table, uint64_t pobjp, int *is_xattrdir)
	Given an object number, return its parent object number and whether or not the object is an extended attribute directory.
static int	zfs_obj_to_stats_impl (sa_handle_t hdl, sa_attr_type_t sa_table, zfs_stat_t *sb)
	Given an object number, return some zpl level statistics.
static int	zfs_obj_to_path_impl (objset_t osp, uint64_t obj, sa_handle_t hdl, sa_attr_type_t sa_table, char buf, int len)
int	zfs_obj_to_path (objset_t osp, uint64_t obj, char buf, int len)
int	zfs_obj_to_stats (objset_t osp, uint64_t obj, zfs_stat_t sb, char *buf, int len)
Variables
krwlock_t	zfsvfs_lock
	Needed to close a small window in zfs_znode_move() that allows the zfsvfs to be freed before it can be safely accessed.
static kmem_cache_t *	znode_cache = NULL
struct vop_vector	zfs_vnodeops
struct vop_vector	zfs_fifoops
struct vop_vector	zfs_shareops
static uint64_t	empty_xattr
static uint64_t	pad [4]
static zfs_acl_phys_t	acl_phys

Define Documentation

#define MAXMAJ64 0xffffffffUL

Definition at line 558 of file zfs_znode.c.

#define MAXMIN64 0xffffffffUL

Definition at line 561 of file zfs_znode.c.

#define NBITSMINOR64 32

Definition at line 555 of file zfs_znode.c.

#define ZNODE_STAT_ADD ( stat )

Define ZNODE_STATS to turn on statistic gathering.

By default, it is only turned on when DEBUG is also defined.

Definition at line 84 of file zfs_znode.c.

Function Documentation

SYSCTL_INT	(	_debug_sizeof	,
		OID_AUTO	,
		znode	,
		CTLFLAG_RD	,
		0	,
		sizeof(znode_t)	,
		"sizeof(znode_t)"
	)

dev_t zfs_cmpldev ( uint64_t dev )

Special cmpldev for ZFS private use.

Can't use standard cmpldev since it takes a long dev_t and compresses it to dev32_t in LP64. We need to do a compaction of a long dev_t to a dev32_t in ILP32.

Definition at line 586 of file zfs_znode.c.

void zfs_create_fs	(	objset_t *	os,
		cred_t *	cr,
		nvlist_t *	zplprops,
		dmu_tx_t *	tx
	)

Definition at line 1841 of file zfs_znode.c.

int zfs_create_share_dir	(	zfsvfs_t *	zfsvfs,
		dmu_tx_t *	tx
	)

Definition at line 499 of file zfs_znode.c.

static uint64_t zfs_expldev ( dev_t dev ) [static]

Create special expldev for ZFS private use.

Can't use standard expldev since it doesn't do what we want. The standard expldev() takes a dev32_t in LP64 and expands it to a long dev_t. We need an interface that takes a dev32_t in ILP32 and expands it to a long dev_t.

Definition at line 573 of file zfs_znode.c.

static int zfs_extend	(	znode_t *	zp,
		uint64_t	end
	)		`[static]`

Increase the file length.

Parameters:

[in]	zp	znode of file to free data in.
[in]	end	new end-of-file

Returns:: 0 on success, error code on failure

Definition at line 1560 of file zfs_znode.c.

static int zfs_free_range	(	znode_t *	zp,
		uint64_t	off,
		uint64_t	len
	)		`[static]`

Free space in a file.

Parameters:

[in]	zp	znode of file to free data in.
[in]	off	start of section to free.
[in]	len	length of section to free.

Returns:: 0 on success, error code on failure

Definition at line 1639 of file zfs_znode.c.

int zfs_freesp	(	znode_t *	zp,
		uint64_t	off,
		uint64_t	len,
		int	flag,
		boolean_t	log
	)

Free space in a file.

Parameters:

[in]	zp	znode of file to free data in.
[in]	off	start of range
[in]	len	end of range (0 => EOF)
[in]	flag	current file open mode flags.
[in]	log	TRUE if this action should be logged

Returns:: 0 on success, error code on failure

Definition at line 1768 of file zfs_znode.c.

static int zfs_grab_sa_handle	(	objset_t *	osp,
		uint64_t	obj,
		sa_handle_t **	hdlp,
		dmu_buf_t **	db,
		void *	tag
	)		`[static]`

Definition at line 2010 of file zfs_znode.c.

void zfs_grow_blocksize	(	znode_t *	zp,
		uint64_t	size,
		dmu_tx_t *	tx
	)

Grow the block size for a file.

Parameters:

[in]	zp	znode of file to free data in.
[in]	size	requested block size
[in]	tx	open transaction.

Note:: This function assumes that the znode is write locked.

Definition at line 1509 of file zfs_znode.c.

void zfs_mknode	(	znode_t *	dzp,
		vattr_t *	vap,
		dmu_tx_t *	tx,
		cred_t *	cr,
		uint_t	flag,
		znode_t **	zpp,
		zfs_acl_ids_t *	acl_ids
	)

Create a new DMU object to hold a zfs znode.

Parameters:

[in]	dzp	parent directory for new znode
[in]	vap	file attributes for new znode
[in]	tx	dmu transaction id for zap operations
[in]	cr	credentials of caller
[in]	flag	flags: IS_ROOT_NODE - new object will be root IS_XATTR - new object is an attribute
[out]	zpp	allocated znode

Definition at line 786 of file zfs_znode.c.

int zfs_obj_to_path	(	objset_t *	osp,
		uint64_t	obj,
		char *	buf,
		int	len
	)

Definition at line 2196 of file zfs_znode.c.

static int zfs_obj_to_path_impl	(	objset_t *	osp,
		uint64_t	obj,
		sa_handle_t *	hdl,
		sa_attr_type_t *	sa_table,
		char *	buf,
		int	len
	)		`[static]`

Definition at line 2124 of file zfs_znode.c.

static int zfs_obj_to_pobj	(	objset_t *	osp,
		sa_handle_t *	hdl,
		sa_attr_type_t *	sa_table,
		uint64_t *	pobjp,
		int *	is_xattrdir
	)		`[static]`

Given an object number, return its parent object number and whether or not the object is an extended attribute directory.

Definition at line 2049 of file zfs_znode.c.

int zfs_obj_to_stats	(	objset_t *	osp,
		uint64_t	obj,
		zfs_stat_t *	sb,
		char *	buf,
		int	len
	)

Definition at line 2218 of file zfs_znode.c.

static int zfs_obj_to_stats_impl	(	sa_handle_t *	hdl,
		sa_attr_type_t *	sa_table,
		zfs_stat_t *	sb
	)		`[static]`

Given an object number, return some zpl level statistics.

Definition at line 2105 of file zfs_znode.c.

void zfs_release_sa_handle	(	sa_handle_t *	hdl,
		dmu_buf_t *	db,
		void *	tag
	)

Definition at line 2038 of file zfs_znode.c.

int zfs_rezget ( znode_t * zp )

Definition at line 1276 of file zfs_znode.c.

static int zfs_sa_setup	(	objset_t *	osp,
		sa_attr_type_t **	sa_table
	)		`[static]`

Definition at line 1996 of file zfs_znode.c.

static int zfs_trunc	(	znode_t *	zp,
		uint64_t	end
	)		`[static]`

Truncate a file.

Parameters:

[in]	zp	znode of file to free data in.
[in]	end	new end-of-file.

Returns:: 0 on success, error code on failure

Definition at line 1686 of file zfs_znode.c.

void zfs_tstamp_update_setup	(	znode_t *	zp,
		uint_t	flag,
		uint64_t	mtime[2],
		uint64_t	ctime[2],
		boolean_t	have_tx
	)

Definition at line 1466 of file zfs_znode.c.

static void zfs_vnode_forget ( vnode_t * vp ) [static]

Definition at line 634 of file zfs_znode.c.

void zfs_xvattr_set	(	znode_t *	zp,
		xvattr_t *	xvap,
		dmu_tx_t *	tx
	)

Update in-core attributes.

It is assumed the caller will be doing an sa_bulk_update to push the changes out

Definition at line 1051 of file zfs_znode.c.

int zfs_zget	(	zfsvfs_t *	zfsvfs,
		uint64_t	obj_num,
		znode_t **	zpp
	)

Definition at line 1142 of file zfs_znode.c.

void zfs_zinactive ( znode_t * zp )

Definition at line 1398 of file zfs_znode.c.

static znode_t* zfs_znode_alloc	(	zfsvfs_t *	zfsvfs,
		dmu_buf_t *	db,
		int	blksz,
		dmu_object_type_t	obj_type,
		sa_handle_t *	hdl
	)		`[static]`

Construct a new znode/vnode and intialize.

This does not do a call to dmu_set_user() that is up to the caller to do, in case you don't want to return the znode

Definition at line 652 of file zfs_znode.c.

static int zfs_znode_cache_constructor	(	void *	buf,
		void *	arg,
		int	kmflags
	)		`[static]`

Definition at line 124 of file zfs_znode.c.

static void zfs_znode_cache_destructor	(	void *	buf,
		void *	arg
	)		`[static]`

Definition at line 167 of file zfs_znode.c.

void zfs_znode_delete	(	znode_t *	zp,
		dmu_tx_t *	tx
	)

Definition at line 1379 of file zfs_znode.c.

void zfs_znode_dmu_fini ( znode_t * zp )

Definition at line 623 of file zfs_znode.c.

void zfs_znode_fini ( void )

Definition at line 386 of file zfs_znode.c.

void zfs_znode_free ( znode_t * zp )

Definition at line 1444 of file zfs_znode.c.

void zfs_znode_init ( void )

Definition at line 372 of file zfs_znode.c.

static void zfs_znode_sa_init	(	zfsvfs_t *	zfsvfs,
		znode_t *	zp,
		dmu_buf_t *	db,
		dmu_object_type_t	obj_type,
		sa_handle_t *	sa_hdl
	)		`[static]`

Definition at line 592 of file zfs_znode.c.

static void znode_evict_error	(	dmu_buf_t *	dbuf,
		void *	user_ptr
	)		`[static]`

Definition at line 103 of file zfs_znode.c.

Variable Documentation

zfs_acl_phys_t acl_phys [static]

Definition at line 772 of file zfs_znode.c.

uint64_t empty_xattr [static]

Definition at line 770 of file zfs_znode.c.

uint64_t pad[4] [static]

Definition at line 771 of file zfs_znode.c.

struct vop_vector zfs_fifoops

Definition at line 6693 of file zfs_vnops.c.

struct vop_vector zfs_shareops

Definition at line 6694 of file zfs_vnops.c.

struct vop_vector zfs_vnodeops

Definition at line 6692 of file zfs_vnops.c.

krwlock_t zfsvfs_lock

Needed to close a small window in zfs_znode_move() that allows the zfsvfs to be freed before it can be safely accessed.

Definition at line 97 of file zfs_znode.c.

kmem_cache_t* znode_cache = NULL [static]

Definition at line 99 of file zfs_znode.c.

zfs_znode.c File Reference

Defines

Functions

Variables

Define Documentation

Function Documentation

Variable Documentation