#include <sys/dmu.h>
#include <sys/dmu_objset.h>
#include <sys/dmu_tx.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_synctask.h>
#include <sys/dsl_deleg.h>
#include <sys/spa.h>
#include <sys/metaslab.h>
#include <sys/zap.h>
#include <sys/zio.h>
#include <sys/arc.h>
#include <sys/sunddi.h>
#include <sys/zvol.h>
#include <sys/zfs_vfsops.h>
#include "zfs_namecheck.h"

Include dependency graph for dsl_dir.c:

Data Structures
struct	tempreserve
struct	renamearg
Functions
static uint64_t	dsl_dir_space_towrite (dsl_dir_t *dd)
static void	dsl_dir_set_reservation_sync (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dir_evict (dmu_buf_t db, void arg)
int	dsl_dir_open_obj (dsl_pool_t dp, uint64_t ddobj, const char tail, void tag, dsl_dir_t *ddp)
void	dsl_dir_close (dsl_dir_t dd, void tag)
void	dsl_dir_name (dsl_dir_t dd, char buf)
	buf must be long enough (MAXNAMELEN + strlen(MOS_DIR_NAME) + 1 should do)
int	dsl_dir_namelen (dsl_dir_t *dd)
	Calculate name length, avoiding all the strcat calls of dsl_dir_name.
static int	getcomponent (const char path, char component, const char **nextp)
int	dsl_dir_open_spa (spa_t spa, const char name, void tag, dsl_dir_t ddp, const char *tailp)
	same as dsl_open_dir, ignore the first component of name and use the spa instead
int	dsl_dir_open (const char name, void tag, dsl_dir_t ddp, const char tailp)
	Return the dsl_dir_t, and possibly the last component which couldn't be found in *tail.
uint64_t	dsl_dir_create_sync (dsl_pool_t dp, dsl_dir_t pds, const char name, dmu_tx_t tx)
int	dsl_dir_destroy_check (void arg1, void arg2, dmu_tx_t *tx)
void	dsl_dir_destroy_sync (void arg1, void tag, dmu_tx_t *tx)
boolean_t	dsl_dir_is_clone (dsl_dir_t *dd)
void	dsl_dir_stats (dsl_dir_t dd, nvlist_t nv)
void	dsl_dir_dirty (dsl_dir_t dd, dmu_tx_t tx)
static int64_t	parent_delta (dsl_dir_t *dd, uint64_t used, int64_t delta)
void	dsl_dir_sync (dsl_dir_t dd, dmu_tx_t tx)
uint64_t	dsl_dir_space_available (dsl_dir_t dd, dsl_dir_t ancestor, int64_t delta, int ondiskonly)
	How much space would dd have available if ancestor had delta applied to it? If ondiskonly is set, we're only interested in what's on-disk, not estimated pending changes.
static int	dsl_dir_tempreserve_impl (dsl_dir_t dd, uint64_t asize, boolean_t netfree, boolean_t ignorequota, boolean_t checkrefquota, list_t tr_list, dmu_tx_t *tx, boolean_t first)
int	dsl_dir_tempreserve_space (dsl_dir_t dd, uint64_t lsize, uint64_t asize, uint64_t fsize, uint64_t usize, void tr_cookiep, dmu_tx_t tx)
	Reserve space in this dsl_dir, to be used in this tx's txg.
void	dsl_dir_tempreserve_clear (void tr_cookie, dmu_tx_t tx)
	Clear a temporary reservation that we previously made with dsl_dir_tempreserve_space().
static void	dsl_dir_willuse_space_impl (dsl_dir_t dd, int64_t space, dmu_tx_t tx)
void	dsl_dir_willuse_space (dsl_dir_t dd, int64_t space, dmu_tx_t tx)
	Call in open context when we think we're going to write/free space, eg.
void	dsl_dir_diduse_space (dsl_dir_t dd, dd_used_t type, int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t tx)
	call from syncing context when we actually write/free space for this dd
void	dsl_dir_transfer_space (dsl_dir_t dd, int64_t delta, dd_used_t oldtype, dd_used_t newtype, dmu_tx_t tx)
static int	dsl_dir_set_quota_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dir_set_quota_sync (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dir_set_quota (const char *ddname, zprop_source_t source, uint64_t quota)
int	dsl_dir_set_reservation_check (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dir_set_reservation (const char *ddname, zprop_source_t source, uint64_t reservation)
static dsl_dir_t *	closest_common_ancestor (dsl_dir_t ds1, dsl_dir_t ds2)
static int64_t	would_change (dsl_dir_t dd, int64_t delta, dsl_dir_t ancestor)
	If delta is applied to dd, how much of that delta would be applied to ancestor? Syncing context only.
static int	dsl_dir_rename_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dir_rename_sync (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dir_rename (dsl_dir_t dd, const char newname, int flags)
int	dsl_dir_transfer_possible (dsl_dir_t sdd, dsl_dir_t tdd, uint64_t space)
timestruc_t	dsl_dir_snap_cmtime (dsl_dir_t *dd)
void	dsl_dir_snap_cmtime_update (dsl_dir_t *dd)
Variables
dsl_syncfunc_t	dsl_prop_set_sync

Function Documentation

static dsl_dir_t* closest_common_ancestor	(	dsl_dir_t *	ds1,
		dsl_dir_t *	ds2
	)		`[static]`

Definition at line 1212 of file dsl_dir.c.

void dsl_dir_close	(	dsl_dir_t *	dd,
		void *	tag
	)

Definition at line 201 of file dsl_dir.c.

uint64_t dsl_dir_create_sync	(	dsl_pool_t *	dp,
		dsl_dir_t *	pds,
		const char *	name,
		dmu_tx_t *	tx
	)

Definition at line 415 of file dsl_dir.c.

int dsl_dir_destroy_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 453 of file dsl_dir.c.

void dsl_dir_destroy_sync	(	void *	arg1,
		void *	tag,
		dmu_tx_t *	tx
	)

Definition at line 485 of file dsl_dir.c.

void dsl_dir_diduse_space	(	dsl_dir_t *	dd,
		dd_used_t	type,
		int64_t	used,
		int64_t	compressed,
		int64_t	uncompressed,
		dmu_tx_t *	tx
	)

call from syncing context when we actually write/free space for this dd

Definition at line 944 of file dsl_dir.c.

void dsl_dir_dirty	(	dsl_dir_t *	dd,
		dmu_tx_t *	tx
	)

Definition at line 572 of file dsl_dir.c.

static void dsl_dir_evict	(	dmu_buf_t *	db,
		void *	arg
	)		`[static]`

Definition at line 53 of file dsl_dir.c.

boolean_t dsl_dir_is_clone ( dsl_dir_t * dd )

Definition at line 523 of file dsl_dir.c.

void dsl_dir_name	(	dsl_dir_t *	dd,
		char *	buf
	)

buf must be long enough (MAXNAMELEN + strlen(MOS_DIR_NAME) + 1 should do)

Definition at line 210 of file dsl_dir.c.

int dsl_dir_namelen ( dsl_dir_t * dd )

Calculate name length, avoiding all the strcat calls of dsl_dir_name.

Definition at line 233 of file dsl_dir.c.

int dsl_dir_open	(	const char *	name,
		void *	tag,
		dsl_dir_t **	ddp,
		const char **	tailp
	)

Return the dsl_dir_t, and possibly the last component which couldn't be found in *tail.

Return NULL if the path is bogus, or if tail==NULL and we couldn't parse the whole name. (*tail)[0] == '@' means that the last component is a snapshot.

Definition at line 409 of file dsl_dir.c.

int dsl_dir_open_obj	(	dsl_pool_t *	dp,
		uint64_t	ddobj,
		const char *	tail,
		void *	tag,
		dsl_dir_t **	ddp
	)

Definition at line 80 of file dsl_dir.c.

int dsl_dir_open_spa	(	spa_t *	spa,
		const char *	name,
		void *	tag,
		dsl_dir_t **	ddp,
		const char **	tailp
	)

same as dsl_open_dir, ignore the first component of name and use the spa instead

Definition at line 308 of file dsl_dir.c.

int dsl_dir_rename	(	dsl_dir_t *	dd,
		const char *	newname,
		int	flags
	)

Definition at line 1356 of file dsl_dir.c.

static int dsl_dir_rename_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1247 of file dsl_dir.c.

static void dsl_dir_rename_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1295 of file dsl_dir.c.

int dsl_dir_set_quota	(	const char *	ddname,
		zprop_source_t	source,
		uint64_t	quota
	)

Definition at line 1069 of file dsl_dir.c.

static int dsl_dir_set_quota_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1017 of file dsl_dir.c.

static void dsl_dir_set_quota_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1051 of file dsl_dir.c.

int dsl_dir_set_reservation	(	const char *	ddname,
		zprop_source_t	source,
		uint64_t	reservation
	)

Definition at line 1181 of file dsl_dir.c.

int dsl_dir_set_reservation_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 1105 of file dsl_dir.c.

static void dsl_dir_set_reservation_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1152 of file dsl_dir.c.

timestruc_t dsl_dir_snap_cmtime ( dsl_dir_t * dd )

Definition at line 1405 of file dsl_dir.c.

void dsl_dir_snap_cmtime_update ( dsl_dir_t * dd )

Definition at line 1417 of file dsl_dir.c.

uint64_t dsl_dir_space_available	(	dsl_dir_t *	dd,
		dsl_dir_t *	ancestor,
		int64_t	delta,
		int	ondiskonly
	)

How much space would dd have available if ancestor had delta applied to it? If ondiskonly is set, we're only interested in what's on-disk, not estimated pending changes.

Definition at line 629 of file dsl_dir.c.

static uint64_t dsl_dir_space_towrite ( dsl_dir_t * dd ) [static]

Definition at line 609 of file dsl_dir.c.

void dsl_dir_stats	(	dsl_dir_t *	dd,
		nvlist_t *	nv
	)

Definition at line 532 of file dsl_dir.c.

void dsl_dir_sync	(	dsl_dir_t *	dd,
		dmu_tx_t *	tx
	)

Definition at line 593 of file dsl_dir.c.

void dsl_dir_tempreserve_clear	(	void *	tr_cookie,
		dmu_tx_t *	tx
	)

Clear a temporary reservation that we previously made with dsl_dir_tempreserve_space().

Definition at line 878 of file dsl_dir.c.

static int dsl_dir_tempreserve_impl	(	dsl_dir_t *	dd,
		uint64_t	asize,
		boolean_t	netfree,
		boolean_t	ignorequota,
		boolean_t	checkrefquota,
		list_t *	tr_list,
		dmu_tx_t *	tx,
		boolean_t	first
	)		`[static]`

Definition at line 698 of file dsl_dir.c.

int dsl_dir_tempreserve_space	(	dsl_dir_t *	dd,
		uint64_t	lsize,
		uint64_t	asize,
		uint64_t	fsize,
		uint64_t	usize,
		void **	tr_cookiep,
		dmu_tx_t *	tx
	)

Reserve space in this dsl_dir, to be used in this tx's txg.

After the space has been dirtied (and dsl_dir_willuse_space() has been called), the reservation should be canceled, using dsl_dir_tempreserve_clear().

Definition at line 819 of file dsl_dir.c.

int dsl_dir_transfer_possible	(	dsl_dir_t *	sdd,
		dsl_dir_t *	tdd,
		uint64_t	space
	)

Definition at line 1389 of file dsl_dir.c.

void dsl_dir_transfer_space	(	dsl_dir_t *	dd,
		int64_t	delta,
		dd_used_t	oldtype,
		dd_used_t	newtype,
		dmu_tx_t *	tx
	)

Definition at line 991 of file dsl_dir.c.

void dsl_dir_willuse_space	(	dsl_dir_t *	dd,
		int64_t	space,
		dmu_tx_t *	tx
	)

Call in open context when we think we're going to write/free space, eg.

when dirtying data. Be conservative (ie. OK to write less than this or free more than this, but don't write more or free less).

Definition at line 936 of file dsl_dir.c.

static void dsl_dir_willuse_space_impl	(	dsl_dir_t *	dd,
		int64_t	space,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 909 of file dsl_dir.c.

static int getcomponent	(	const char *	path,
		char *	component,
		const char **	nextp
	)		`[static]`

Definition at line 255 of file dsl_dir.c.

static int64_t parent_delta	(	dsl_dir_t *	dd,
		uint64_t	used,
		int64_t	delta
	)		`[static]`

Definition at line 585 of file dsl_dir.c.

static int64_t would_change	(	dsl_dir_t *	dd,
		int64_t	delta,
		dsl_dir_t *	ancestor
	)		`[static]`

If delta is applied to dd, how much of that delta would be applied to ancestor? Syncing context only.

Definition at line 1229 of file dsl_dir.c.

Variable Documentation

dsl_syncfunc_t dsl_prop_set_sync

dsl_dir.c File Reference

Data Structures

Functions

Variables

Function Documentation

Variable Documentation