#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysmacros.h>
#include <sys/kmem.h>
#include <sys/acl.h>
#include <sys/vnode.h>
#include <sys/vfs.h>
#include <sys/mntent.h>
#include <sys/mount.h>
#include <sys/cmn_err.h>
#include <sys/zfs_znode.h>
#include <sys/zfs_dir.h>
#include <sys/zil.h>
#include <sys/fs/zfs.h>
#include <sys/dmu.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_deleg.h>
#include <sys/spa.h>
#include <sys/zap.h>
#include <sys/sa.h>
#include <sys/sa_impl.h>
#include <sys/varargs.h>
#include <sys/policy.h>
#include <sys/atomic.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_ctldir.h>
#include <sys/zfs_fuid.h>
#include <sys/sunddi.h>
#include <sys/dnlc.h>
#include <sys/dmu_objset.h>
#include <sys/spa_boot.h>
#include <sys/jail.h>
#include "zfs_comutil.h"

Include dependency graph for zfs_vfsops.c:

Functions
	MTX_SYSINIT (zfs_debug_mtx,&zfs_debug_mtx,"zfs_debug", MTX_DEF)
	SYSCTL_NODE (_vfs, OID_AUTO, zfs, CTLFLAG_RW, 0,"ZFS file system")
	SYSCTL_INT (_vfs_zfs, OID_AUTO, super_owner, CTLFLAG_RW,&zfs_super_owner, 0,"File system owner can perform privileged operation on his file systems")
	TUNABLE_INT ("vfs.zfs.debug",&zfs_debug_level)
	SYSCTL_INT (_vfs_zfs, OID_AUTO, debug, CTLFLAG_RW,&zfs_debug_level, 0,"Debug level")
	SYSCTL_NODE (_vfs_zfs, OID_AUTO, version, CTLFLAG_RD, 0,"ZFS versions")
	SYSCTL_INT (_vfs_zfs_version, OID_AUTO, acl, CTLFLAG_RD,&zfs_version_acl, 0,"ZFS_ACL_VERSION")
	SYSCTL_INT (_vfs_zfs_version, OID_AUTO, spa, CTLFLAG_RD,&zfs_version_spa, 0,"SPA_VERSION")
	SYSCTL_INT (_vfs_zfs_version, OID_AUTO, zpl, CTLFLAG_RD,&zfs_version_zpl, 0,"ZPL_VERSION")
static int	zfs_mount (vfs_t *vfsp)
static int	zfs_umount (vfs_t *vfsp, int fflag)
static int	zfs_root (vfs_t vfsp, int flags, vnode_t *vpp)
static int	zfs_statfs (vfs_t vfsp, struct statfs statp)
static int	zfs_vget (vfs_t vfsp, ino_t ino, int flags, vnode_t *vpp)
static int	zfs_sync (vfs_t *vfsp, int waitfor)
static int	zfs_checkexp (vfs_t vfsp, struct sockaddr nam, int extflagsp, struct ucred credanonp, int numsecflavors, int **secflavors)
static int	zfs_fhtovp (vfs_t vfsp, fid_t fidp, int flags, vnode_t **vpp)
static void	zfs_objset_close (zfsvfs_t *zfsvfs)
static void	zfs_freevfs (vfs_t *vfsp)
	VFS_SET (zfs_vfsops, zfs, VFCF_JAIL\|VFCF_DELEGADMIN)
static int	zfs_create_unique_device (dev_t *dev)
static void	atime_changed_cb (void *arg, uint64_t newval)
static void	xattr_changed_cb (void *arg, uint64_t newval)
static void	blksz_changed_cb (void *arg, uint64_t newval)
static void	readonly_changed_cb (void *arg, uint64_t newval)
static void	setuid_changed_cb (void *arg, uint64_t newval)
static void	exec_changed_cb (void *arg, uint64_t newval)
static void	nbmand_changed_cb (void *arg, uint64_t newval)
	The nbmand mount option can be changed at mount time.
static void	snapdir_changed_cb (void *arg, uint64_t newval)
static void	vscan_changed_cb (void *arg, uint64_t newval)
static void	acl_mode_changed_cb (void *arg, uint64_t newval)
static void	acl_inherit_changed_cb (void *arg, uint64_t newval)
static int	zfs_register_callbacks (vfs_t *vfsp)
static int	zfs_space_delta_cb (dmu_object_type_t bonustype, void data, uint64_t userp, uint64_t *groupp)
static void	fuidstr_to_sid (zfsvfs_t zfsvfs, const char fuidstr, char domainbuf, int buflen, uid_t ridp)
static uint64_t	zfs_userquota_prop_to_obj (zfsvfs_t *zfsvfs, zfs_userquota_prop_t type)
int	zfs_userspace_many (zfsvfs_t zfsvfs, zfs_userquota_prop_t type, uint64_t cookiep, void vbuf, uint64_t bufsizep)
static int	id_to_fuidstr (zfsvfs_t zfsvfs, const char domain, uid_t rid, char *buf, boolean_t addok)
	buf must be big enough (eg, 32 bytes)
int	zfs_userspace_one (zfsvfs_t zfsvfs, zfs_userquota_prop_t type, const char domain, uint64_t rid, uint64_t *valp)
int	zfs_set_userquota (zfsvfs_t zfsvfs, zfs_userquota_prop_t type, const char domain, uint64_t rid, uint64_t quota)
boolean_t	zfs_fuid_overquota (zfsvfs_t *zfsvfs, boolean_t isgroup, uint64_t fuid)
boolean_t	zfs_owner_overquota (zfsvfs_t zfsvfs, znode_t zp, boolean_t isgroup)
int	zfsvfs_create (const char osname, zfsvfs_t *zfvp)
static int	zfsvfs_setup (zfsvfs_t *zfsvfs, boolean_t mounting)
void	zfsvfs_free (zfsvfs_t *zfsvfs)
static void	zfs_set_fuid_feature (zfsvfs_t *zfsvfs)
static int	zfs_domount (vfs_t vfsp, char osname)
void	zfs_unregister_callbacks (zfsvfs_t *zfsvfs)
static int	getpoolname (const char osname, char poolname)
int	zfs_vnode_lock (vnode_t *vp, int flags)
static int	zfsvfs_teardown (zfsvfs_t *zfsvfs, boolean_t unmounting)
	Teardown the zfsvfs::z_os.
	CTASSERT (SHORT_FID_LEN<=sizeof(struct fid))
	CTASSERT (LONG_FID_LEN<=sizeof(struct fid))
int	zfs_suspend_fs (zfsvfs_t *zfsvfs)
	Block out VOPs and close zfsvfs_t::z_os.
int	zfs_resume_fs (zfsvfs_t zfsvfs, const char osname)
	Reopen zfsvfs_t::z_os and release VOPs.
static void	zfs_vnodes_adjust (void)
static void	zfs_vnodes_adjust_back (void)
void	zfs_init (void)
void	zfs_fini (void)
int	zfs_busy (void)
int	zfs_set_version (zfsvfs_t *zfsvfs, uint64_t newvers)
int	zfs_get_zplprop (objset_t os, zfs_prop_t prop, uint64_t value)
	Read a property stored within the master node.
void	zfsvfs_update_fromname (const char oldname, const char newname)
Variables
struct mtx	zfs_debug_mtx
int	zfs_super_owner
int	zfs_debug_level
static int	zfs_version_acl = ZFS_ACL_VERSION
static int	zfs_version_spa = SPA_VERSION
static int	zfs_version_zpl = ZPL_VERSION
static struct vfsops	zfs_vfsops
static uint32_t	zfs_active_fs_count = 0
	We need to keep a count of active fs's.
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.

Function Documentation

static void acl_inherit_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 381 of file zfs_vfsops.c.

static void acl_mode_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 373 of file zfs_vfsops.c.

static void atime_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 233 of file zfs_vfsops.c.

static void blksz_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 273 of file zfs_vfsops.c.

CTASSERT ( SHORT_FID_LEN<= sizeofstruct fid )

CTASSERT ( LONG_FID_LEN<= sizeofstruct fid )

static void exec_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 320 of file zfs_vfsops.c.

static void fuidstr_to_sid	(	zfsvfs_t *	zfsvfs,
		const char *	fuidstr,
		char *	domainbuf,
		int	buflen,
		uid_t *	ridp
	)		`[static]`

Definition at line 618 of file zfs_vfsops.c.

static int getpoolname	(	const char *	osname,
		char *	poolname
	)		`[static]`

Definition at line 1542 of file zfs_vfsops.c.

static int id_to_fuidstr	(	zfsvfs_t *	zfsvfs,
		const char *	domain,
		uid_t	rid,
		char *	buf,
		boolean_t	addok
	)		`[static]`

buf must be big enough (eg, 32 bytes)

Definition at line 696 of file zfs_vfsops.c.

MTX_SYSINIT	(	zfs_debug_mtx	,
		&	zfs_debug_mtx,
		"zfs_debug"	,
		MTX_DEF
	)

static void nbmand_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

The nbmand mount option can be changed at mount time.

We can't allow it to be toggled on live file systems or incorrect behavior may be seen from cifs clients

This property isn't registered via dsl_prop_register(), but this callback will be called when a file system is first mounted

Definition at line 344 of file zfs_vfsops.c.

static void readonly_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 286 of file zfs_vfsops.c.

static void setuid_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 304 of file zfs_vfsops.c.

static void snapdir_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 357 of file zfs_vfsops.c.

SYSCTL_INT	(	_vfs_zfs_version	,
		OID_AUTO	,
		spa	,
		CTLFLAG_RD	,
		&	zfs_version_spa,
		0	,
		"SPA_VERSION"
	)

SYSCTL_INT	(	_vfs_zfs_version	,
		OID_AUTO	,
		zpl	,
		CTLFLAG_RD	,
		&	zfs_version_zpl,
		0	,
		"ZPL_VERSION"
	)

SYSCTL_INT	(	_vfs_zfs	,
		OID_AUTO	,
		debug	,
		CTLFLAG_RW	,
		&	zfs_debug_level,
		0	,
		"Debug level"
	)

SYSCTL_INT	(	_vfs_zfs	,
		OID_AUTO	,
		super_owner	,
		CTLFLAG_RW	,
		&	zfs_super_owner,
		0	,
		"File system owner can perform privileged operation on his file systems"
	)

SYSCTL_INT	(	_vfs_zfs_version	,
		OID_AUTO	,
		acl	,
		CTLFLAG_RD	,
		&	zfs_version_acl,
		0	,
		"ZFS_ACL_VERSION"
	)

SYSCTL_NODE	(	_vfs	,
		OID_AUTO	,
		zfs	,
		CTLFLAG_RW	,
		0	,
		"ZFS file system"
	)

SYSCTL_NODE	(	_vfs_zfs	,
		OID_AUTO	,
		version	,
		CTLFLAG_RD	,
		0	,
		"ZFS versions"
	)

TUNABLE_INT	(	"vfs.zfs.debug"	,
		&	zfs_debug_level
	)

VFS_SET	(	zfs_vfsops	,
		zfs	,
		VFCF_JAIL\|	VFCF_DELEGADMIN
	)

static void vscan_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 365 of file zfs_vfsops.c.

static void xattr_changed_cb	(	void *	arg,
		uint64_t	newval
	)		`[static]`

Definition at line 251 of file zfs_vfsops.c.

int zfs_busy ( void )

Definition at line 2345 of file zfs_vfsops.c.

static int zfs_checkexp	(	vfs_t *	vfsp,
		struct sockaddr *	nam,
		int *	extflagsp,
		struct ucred **	credanonp,
		int *	numsecflavors,
		int **	secflavors
	)		`[static]`

Definition at line 2043 of file zfs_vfsops.c.

static int zfs_create_unique_device ( dev_t * dev ) [static]

Definition at line 180 of file zfs_vfsops.c.

static int zfs_domount	(	vfs_t *	vfsp,
		char *	osname
	)		`[static]`

Definition at line 1115 of file zfs_vfsops.c.

static int zfs_fhtovp	(	vfs_t *	vfsp,
		fid_t *	fidp,
		int	flags,
		vnode_t **	vpp
	)		`[static]`

Definition at line 2063 of file zfs_vfsops.c.

void zfs_fini ( void )

Definition at line 2337 of file zfs_vfsops.c.

static void zfs_freevfs ( vfs_t * vfsp ) [static]

Definition at line 2256 of file zfs_vfsops.c.

boolean_t zfs_fuid_overquota	(	zfsvfs_t *	zfsvfs,
		boolean_t	isgroup,
		uint64_t	fuid
	)

Definition at line 801 of file zfs_vfsops.c.

int zfs_get_zplprop	(	objset_t *	os,
		zfs_prop_t	prop,
		uint64_t *	value
	)

Read a property stored within the master node.

Definition at line 2421 of file zfs_vfsops.c.

void zfs_init ( void )

Definition at line 2311 of file zfs_vfsops.c.

static int zfs_mount ( vfs_t * vfsp ) [static]

Definition at line 1562 of file zfs_vfsops.c.

static void zfs_objset_close ( zfsvfs_t * zfsvfs ) [static]

boolean_t zfs_owner_overquota	(	zfsvfs_t *	zfsvfs,
		znode_t *	zp,
		boolean_t	isgroup
	)

Definition at line 825 of file zfs_vfsops.c.

static int zfs_register_callbacks ( vfs_t * vfsp ) [static]

Definition at line 389 of file zfs_vfsops.c.

int zfs_resume_fs	(	zfsvfs_t *	zfsvfs,
		const char *	osname
	)

Reopen zfsvfs_t::z_os and release VOPs.

Definition at line 2182 of file zfs_vfsops.c.

static int zfs_root	(	vfs_t *	vfsp,
		int	flags,
		vnode_t **	vpp
	)		`[static]`

Definition at line 1751 of file zfs_vfsops.c.

static void zfs_set_fuid_feature ( zfsvfs_t * zfsvfs ) [static]

Definition at line 1091 of file zfs_vfsops.c.

int zfs_set_userquota	(	zfsvfs_t *	zfsvfs,
		zfs_userquota_prop_t	type,
		const char *	domain,
		uint64_t	rid,
		uint64_t	quota
	)

Definition at line 740 of file zfs_vfsops.c.

int zfs_set_version	(	zfsvfs_t *	zfsvfs,
		uint64_t	newvers
	)

Definition at line 2351 of file zfs_vfsops.c.

static int zfs_space_delta_cb	(	dmu_object_type_t	bonustype,
		void *	data,
		uint64_t *	userp,
		uint64_t *	groupp
	)		`[static]`

Definition at line 553 of file zfs_vfsops.c.

static int zfs_statfs	(	vfs_t *	vfsp,
		struct statfs *	statp
	)		`[static]`

Definition at line 1682 of file zfs_vfsops.c.

int zfs_suspend_fs ( zfsvfs_t * zfsvfs )

Block out VOPs and close zfsvfs_t::z_os.

Note:: If successful, then we return with the 'z_teardown_lock' and 'z_teardown_inactive_lock' write held.

Definition at line 2167 of file zfs_vfsops.c.

static int zfs_sync	(	vfs_t *	vfsp,
		int	waitfor
	)		`[static]`

Definition at line 128 of file zfs_vfsops.c.

static int zfs_umount	(	vfs_t *	vfsp,
		int	fflag
	)		`[static]`

Definition at line 1889 of file zfs_vfsops.c.

void zfs_unregister_callbacks ( zfsvfs_t * zfsvfs )

Definition at line 1207 of file zfs_vfsops.c.

static uint64_t zfs_userquota_prop_to_obj	(	zfsvfs_t *	zfsvfs,
		zfs_userquota_prop_t	type
	)		`[static]`

Definition at line 635 of file zfs_vfsops.c.

int zfs_userspace_many	(	zfsvfs_t *	zfsvfs,
		zfs_userquota_prop_t	type,
		uint64_t *	cookiep,
		void *	vbuf,
		uint64_t *	bufsizep
	)

Definition at line 651 of file zfs_vfsops.c.

int zfs_userspace_one	(	zfsvfs_t *	zfsvfs,
		zfs_userquota_prop_t	type,
		const char *	domain,
		uint64_t	rid,
		uint64_t *	valp
	)

Definition at line 713 of file zfs_vfsops.c.

static int zfs_vget	(	vfs_t *	vfsp,
		ino_t	ino,
		int	flags,
		vnode_t **	vpp
	)		`[static]`

Definition at line 2012 of file zfs_vfsops.c.

int zfs_vnode_lock	(	vnode_t *	vp,
		int	flags
	)

Definition at line 1740 of file zfs_vfsops.c.

static void zfs_vnodes_adjust ( void ) [static]

Definition at line 2281 of file zfs_vfsops.c.

static void zfs_vnodes_adjust_back ( void ) [static]

Definition at line 2302 of file zfs_vfsops.c.

int zfsvfs_create	(	const char *	osname,
		zfsvfs_t **	zfvp
	)

Definition at line 841 of file zfs_vfsops.c.

void zfsvfs_free ( zfsvfs_t * zfsvfs )

Definition at line 1064 of file zfs_vfsops.c.

static int zfsvfs_setup	(	zfsvfs_t *	zfsvfs,
		boolean_t	mounting
	)		`[static]`

Definition at line 983 of file zfs_vfsops.c.

static int zfsvfs_teardown	(	zfsvfs_t *	zfsvfs,
		boolean_t	unmounting
	)		`[static]`

Teardown the zfsvfs::z_os.

Note:: If 'unmounting' is FALSE, we return with the 'z_teardown_lock' and 'z_teardown_inactive_lock' held.

Definition at line 1783 of file zfs_vfsops.c.

void zfsvfs_update_fromname	(	const char *	oldname,
		const char *	newname
	)

Definition at line 2461 of file zfs_vfsops.c.

Variable Documentation

uint32_t zfs_active_fs_count = 0 [static]

We need to keep a count of active fs's.

This is necessary to prevent our module from being unloaded after a umount -f

Definition at line 124 of file zfs_vfsops.c.

struct mtx zfs_debug_mtx

Definition at line 66 of file zfs_vfsops.c.

int zfs_super_owner

Definition at line 71 of file zfs_vfsops.c.

int zfs_version_acl = ZFS_ACL_VERSION [static]

Definition at line 84 of file zfs_vfsops.c.

int zfs_version_spa = SPA_VERSION [static]

Definition at line 87 of file zfs_vfsops.c.

int zfs_version_zpl = ZPL_VERSION [static]

Definition at line 90 of file zfs_vfsops.c.

struct vfsops zfs_vfsops [static]

Initial value:

 {
        .vfs_mount =            zfs_mount,
        .vfs_unmount =          zfs_umount,
        .vfs_root =             zfs_root,
        .vfs_statfs =           zfs_statfs,
        .vfs_vget =             zfs_vget,
        .vfs_sync =             zfs_sync,
        .vfs_checkexp =         zfs_checkexp,
        .vfs_fhtovp =           zfs_fhtovp,
}

Definition at line 106 of file zfs_vfsops.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.

zfs_vfsops.c File Reference

Functions

Variables

Function Documentation

Variable Documentation