static int llog_truncate(const struct lu_env *env, struct dt_object *o)
{
struct lu_attr la;
struct thandle *th;
struct dt_device *d;
int rc;
ENTRY;
LASSERT(o);
d = lu2dt_dev(o->do_lu.lo_dev);
LASSERT(d);
rc = dt_attr_get(env, o, &la);
if (rc)
RETURN(rc);
CDEBUG(D_OTHER, "original size "LPU64"\n", la.la_size);
rc = sizeof(struct llog_log_hdr) + sizeof(struct llog_mini_rec);
if (la.la_size < rc) {
CERROR("too small llog: "LPU64"\n", la.la_size);
RETURN(0);
}
/* drop 2 records */
la.la_size = la.la_size - (sizeof(struct llog_mini_rec) * 2);
la.la_valid = LA_SIZE;
th = dt_trans_create(env, d);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
rc = dt_declare_attr_set(env, o, &la, th);
if (rc)
GOTO(stop, rc);
rc = dt_declare_punch(env, o, la.la_size, OBD_OBJECT_EOF, th);
rc = dt_trans_start_local(env, d, th);
if (rc)
GOTO(stop, rc);
rc = dt_punch(env, o, la.la_size, OBD_OBJECT_EOF, th);
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, o, &la, th);
if (rc)
GOTO(stop, rc);
stop:
dt_trans_stop(env, d, th);
RETURN(rc);
}
static int llog_osd_declare_write_rec(const struct lu_env *env,
struct llog_handle *loghandle,
struct llog_rec_hdr *rec,
int idx, struct thandle *th)
{
struct llog_thread_info *lgi = llog_info(env);
struct dt_object *o;
int rc;
ENTRY;
LASSERT(env);
LASSERT(th);
LASSERT(loghandle);
o = loghandle->lgh_obj;
LASSERT(o);
/* each time we update header */
rc = dt_declare_record_write(env, o, sizeof(struct llog_log_hdr), 0,
th);
if (rc || idx == 0) /* if error or just header */
RETURN(rc);
if (dt_object_exists(o)) {
rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA);
lgi->lgi_off = lgi->lgi_attr.la_size;
LASSERT(ergo(rc == 0, lgi->lgi_attr.la_valid & LA_SIZE));
if (rc)
RETURN(rc);
rc = dt_declare_punch(env, o, lgi->lgi_off, OBD_OBJECT_EOF, th);
if (rc)
RETURN(rc);
} else {
lgi->lgi_off = 0;
}
/* XXX: implement declared window or multi-chunks approach */
rc = dt_declare_record_write(env, o, 32 * 1024, lgi->lgi_off, th);
RETURN(rc);
}
int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
__u64 start, __u64 end, struct lu_attr *la,
struct filter_fid *ff, struct obdo *oa)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct ofd_mod_data *fmd;
struct dt_object *dob = ofd_object_child(fo);
struct thandle *th;
int ff_needed = 0;
int rc;
ENTRY;
/* we support truncate, not punch yet */
LASSERT(end == OBD_OBJECT_EOF);
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0)
GOTO(unlock, rc);
}
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_load(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, dob, la, th);
if (rc)
GOTO(stop, rc);
rc = dt_declare_punch(env, dob, start, OBD_OBJECT_EOF, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, fo, th);
if (rc)
GOTO(stop, rc);
rc = dt_punch(env, dob, start, OBD_OBJECT_EOF, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, dob, la, th, ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed) {
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
if (rc == 0) {
fo->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
fo->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
/* Currently, the filter_fid::ff_parent::f_ver is not
* the real parent MDT-object's FID::f_ver, instead it
* is the OST-object index in its parent MDT-object's
* layout EA. */
fo->ofo_pfid.f_stripe_idx =
le32_to_cpu(ff->ff_parent.f_stripe_idx);
}
}
GOTO(stop, rc);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
return rc;
}
int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
__u64 start, __u64 end, struct lu_attr *la,
struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct ofd_mod_data *fmd;
struct dt_object *dob = ofd_object_child(fo);
struct thandle *th;
int ff_needed = 0;
int rc;
ENTRY;
/* we support truncate, not punch yet */
LASSERT(end == OBD_OBJECT_EOF);
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_check(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, dob, la, th);
if (rc)
GOTO(stop, rc);
rc = dt_declare_punch(env, dob, start, OBD_OBJECT_EOF, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, fo, th);
if (rc)
GOTO(stop, rc);
rc = dt_punch(env, dob, start, OBD_OBJECT_EOF, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, dob, la, th, ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed)
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
RETURN(rc);
}
