void
zfs_rmnode(znode_t *zp)
{
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
objset_t *os = zfsvfs->z_os;
znode_t *xzp = NULL;
char obj_name[17];
dmu_tx_t *tx;
uint64_t acl_obj;
int error;
ASSERT(ZTOV(zp)->v_count == 0);
ASSERT(zp->z_phys->zp_links == 0);
/*
* If this is an attribute directory, purge its contents.
*/
if (ZTOV(zp)->v_type == VDIR && (zp->z_phys->zp_flags & ZFS_XATTR)) {
if (zfs_purgedir(zp) != 0) {
/*
* Not enough space to delete some xattrs.
* Leave it on the unlinked set.
*/
return;
}
}
/*
* If the file has extended attributes, we're going to unlink
* the xattr dir.
*/
if (zp->z_phys->zp_xattr) {
error = zfs_zget(zfsvfs, zp->z_phys->zp_xattr, &xzp);
ASSERT(error == 0);
}
acl_obj = zp->z_phys->zp_acl.z_acl_extern_obj;
/*
* Set up the transaction.
*/
tx = dmu_tx_create(os);
dmu_tx_hold_free(tx, zp->z_id, 0, DMU_OBJECT_END);
dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL);
if (xzp) {
dmu_tx_hold_bonus(tx, xzp->z_id);
dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, TRUE, NULL);
}
if (acl_obj)
dmu_tx_hold_free(tx, acl_obj, 0, DMU_OBJECT_END);
error = dmu_tx_assign(tx, TXG_WAIT);
if (error) {
/*
* Not enough space to delete the file. Leave it in the
* unlinked set, leaking it until the fs is remounted (at
* which point we'll call zfs_unlinked_drain() to process it).
*/
dmu_tx_abort(tx);
return;
}
if (xzp) {
dmu_buf_will_dirty(xzp->z_dbuf, tx);
mutex_enter(&xzp->z_lock);
xzp->z_unlinked = B_TRUE; /* mark xzp for deletion */
xzp->z_phys->zp_links = 0; /* no more links to it */
mutex_exit(&xzp->z_lock);
zfs_unlinked_add(xzp, tx);
}
/* Remove this znode from the unlinked set */
error = zap_remove(os, zfsvfs->z_unlinkedobj,
zfs_unlinked_hexname(obj_name, zp->z_id), tx);
ASSERT3U(error, ==, 0);
zfs_znode_delete(zp, tx);
dmu_tx_commit(tx);
if (xzp)
VN_RELE(ZTOV(xzp));
}
static int osd_declare_attr_set(const struct lu_env *env,
struct dt_object *dt,
const struct lu_attr *attr,
struct thandle *handle)
{
struct osd_thread_info *info = osd_oti_get(env);
char *buf = osd_oti_get(env)->oti_str;
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t bspace;
uint32_t blksize;
int rc = 0;
ENTRY;
LASSERT(handle != NULL);
LASSERT(osd_invariant(obj));
oh = container_of0(handle, struct osd_thandle, ot_super);
down_read(&obj->oo_guard);
if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
GOTO(out, rc = 0);
LASSERT(obj->oo_sa_hdl != NULL);
LASSERT(oh->ot_tx != NULL);
dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
if (oh->ot_tx->tx_err != 0)
GOTO(out, rc = -oh->ot_tx->tx_err);
sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
bspace = toqb(bspace * blksize);
__osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
XATTR_NAME_LMA, oh);
if (attr && attr->la_valid & LA_UID) {
/* account for user inode tracking ZAP update */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
/* quota enforcement for user */
if (attr->la_uid != obj->oo_attr.la_uid) {
rc = qsd_transfer(env, osd->od_quota_slave,
&oh->ot_quota_trans, USRQUOTA,
obj->oo_attr.la_uid, attr->la_uid,
bspace, &info->oti_qi);
if (rc)
GOTO(out, rc);
}
}
if (attr && attr->la_valid & LA_GID) {
/* account for user inode tracking ZAP update */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
/* quota enforcement for group */
if (attr->la_gid != obj->oo_attr.la_gid) {
rc = qsd_transfer(env, osd->od_quota_slave,
&oh->ot_quota_trans, GRPQUOTA,
obj->oo_attr.la_gid, attr->la_gid,
bspace, &info->oti_qi);
if (rc)
GOTO(out, rc);
}
}
out:
up_read(&obj->oo_guard);
RETURN(rc);
}
static int osd_declare_object_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct dt_object_format *dof,
struct thandle *handle)
{
char *buf = osd_oti_get(env)->oti_str;
const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t zapid;
int rc;
ENTRY;
LASSERT(dof);
switch (dof->dof_type) {
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
if (obj->oo_dt.do_body_ops == NULL)
obj->oo_dt.do_body_ops = &osd_body_ops;
break;
default:
break;
}
LASSERT(handle != NULL);
oh = container_of0(handle, struct osd_thandle, ot_super);
LASSERT(oh->ot_tx != NULL);
switch (dof->dof_type) {
case DFT_DIR:
dt->do_index_ops = &osd_dir_ops;
case DFT_INDEX:
/* for zap create */
dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
break;
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
/* first, we'll create new object */
dmu_tx_hold_bonus(oh->ot_tx, DMU_NEW_OBJECT);
break;
default:
LBUG();
break;
}
/* and we'll add it to some mapping */
zapid = osd_get_name_n_idx(env, osd, fid, buf);
dmu_tx_hold_bonus(oh->ot_tx, zapid);
dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, buf);
/* we will also update inode accounting ZAPs */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
__osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
XATTR_NAME_LMA, oh);
rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
false, NULL, false);
RETURN(rc);
}
int
zfs_make_xattrdir(znode_t *zp, vattr_t *vap, vnode_t **xvpp, cred_t *cr)
{
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
znode_t *xzp;
dmu_tx_t *tx;
int error;
zfs_acl_ids_t acl_ids;
boolean_t fuid_dirtied;
*xvpp = NULL;
/*
* In FreeBSD, access checking for creating an EA is being done
* in zfs_setextattr(),
*/
#ifndef __FreeBSD__
if (error = zfs_zaccess(zp, ACE_WRITE_NAMED_ATTRS, 0, B_FALSE, cr))
return (error);
#endif
if ((error = zfs_acl_ids_create(zp, IS_XATTR, vap, cr, NULL,
&acl_ids)) != 0)
return (error);
if (zfs_acl_ids_overquota(zfsvfs, &acl_ids)) {
zfs_acl_ids_free(&acl_ids);
return (EDQUOT);
}
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_bonus(tx, zp->z_id);
dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
fuid_dirtied = zfsvfs->z_fuid_dirty;
if (fuid_dirtied)
zfs_fuid_txhold(zfsvfs, tx);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
zfs_acl_ids_free(&acl_ids);
if (error == ERESTART)
dmu_tx_wait(tx);
dmu_tx_abort(tx);
return (error);
}
zfs_mknode(zp, vap, tx, cr, IS_XATTR, &xzp, 0, &acl_ids);
if (fuid_dirtied)
zfs_fuid_sync(zfsvfs, tx);
ASSERT(xzp->z_phys->zp_parent == zp->z_id);
dmu_buf_will_dirty(zp->z_dbuf, tx);
zp->z_phys->zp_xattr = xzp->z_id;
(void) zfs_log_create(zfsvfs->z_log, tx, TX_MKXATTR, zp,
xzp, "", NULL, acl_ids.z_fuidp, vap);
zfs_acl_ids_free(&acl_ids);
dmu_tx_commit(tx);
*xvpp = ZTOV(xzp);
return (0);
}
static int osd_declare_attr_set(const struct lu_env *env,
struct dt_object *dt,
const struct lu_attr *attr,
struct thandle *handle)
{
struct osd_thread_info *info = osd_oti_get(env);
char *buf = osd_oti_get(env)->oti_str;
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t bspace;
uint32_t blksize;
int rc;
ENTRY;
if (!dt_object_exists(dt)) {
/* XXX: sanity check that object creation is declared */
RETURN(0);
}
LASSERT(handle != NULL);
LASSERT(osd_invariant(obj));
oh = container_of0(handle, struct osd_thandle, ot_super);
LASSERT(obj->oo_sa_hdl != NULL);
LASSERT(oh->ot_tx != NULL);
dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
if (oh->ot_tx->tx_err != 0)
RETURN(-oh->ot_tx->tx_err);
sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
bspace = toqb(bspace * blksize);
if (attr && attr->la_valid & LA_UID) {
/* account for user inode tracking ZAP update */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
/* quota enforcement for user */
if (attr->la_uid != obj->oo_attr.la_uid) {
rc = qsd_transfer(env, osd->od_quota_slave,
&oh->ot_quota_trans, USRQUOTA,
obj->oo_attr.la_uid, attr->la_uid,
bspace, &info->oti_qi);
if (rc)
RETURN(rc);
}
}
if (attr && attr->la_valid & LA_GID) {
/* account for user inode tracking ZAP update */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
/* quota enforcement for group */
if (attr->la_gid != obj->oo_attr.la_gid) {
rc = qsd_transfer(env, osd->od_quota_slave,
&oh->ot_quota_trans, GRPQUOTA,
obj->oo_attr.la_gid, attr->la_gid,
bspace, &info->oti_qi);
if (rc)
RETURN(rc);
}
}
RETURN(0);
}
void __osd_xattr_declare_set(const struct lu_env *env, struct osd_object *obj,
int vallen, const char *name, struct osd_thandle *oh)
{
struct osd_device *osd = osd_obj2dev(obj);
udmu_objset_t *uos = &osd->od_objset;
dmu_buf_t *db = obj->oo_db;
dmu_tx_t *tx = oh->ot_tx;
uint64_t xa_data_obj;
int rc = 0;
int here;
here = dt_object_exists(&obj->oo_dt);
/* object may be not yet created */
if (here) {
LASSERT(db);
LASSERT(obj->oo_sa_hdl);
/* we might just update SA_ZPL_DXATTR */
dmu_tx_hold_sa(tx, obj->oo_sa_hdl, 1);
if (obj->oo_xattr == ZFS_NO_OBJECT)
rc = -ENOENT;
}
if (!here || rc == -ENOENT) {
/* we'll be updating SA_ZPL_XATTR */
if (here) {
LASSERT(obj->oo_sa_hdl);
dmu_tx_hold_sa(tx, obj->oo_sa_hdl, 1);
}
/* xattr zap + entry */
dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, TRUE, (char *) name);
/* xattr value obj */
dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, vallen);
return;
}
rc = -zap_lookup(uos->os, obj->oo_xattr, name, sizeof(uint64_t), 1,
&xa_data_obj);
if (rc == 0) {
/*
* Entry already exists.
* We'll truncate the existing object.
*/
dmu_tx_hold_bonus(tx, xa_data_obj);
dmu_tx_hold_free(tx, xa_data_obj, vallen, DMU_OBJECT_END);
dmu_tx_hold_write(tx, xa_data_obj, 0, vallen);
return;
} else if (rc == -ENOENT) {
/*
* Entry doesn't exist, we need to create a new one and a new
* object to store the value.
*/
dmu_tx_hold_bonus(tx, obj->oo_xattr);
dmu_tx_hold_zap(tx, obj->oo_xattr, TRUE, (char *) name);
dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, vallen);
return;
}
/* An error happened */
tx->tx_err = -rc;
}
