/**
* Find the osd object for given fid.
*
* \param fid need to find the osd object having this fid
*
* \retval osd_object on success
* \retval -ve on error
*/
struct osd_object *osd_object_find(const struct lu_env *env,
struct dt_object *dt,
const struct lu_fid *fid)
{
struct lu_device *ludev = dt->do_lu.lo_dev;
struct osd_object *child = NULL;
struct lu_object *luch;
struct lu_object *lo;
/*
* at this point topdev might not exist yet
* (i.e. MGS is preparing profiles). so we can
* not rely on topdev and instead lookup with
* our device passed as topdev. this can't work
* if the object isn't cached yet (as osd doesn't
* allocate lu_header). IOW, the object must be
* in the cache, otherwise lu_object_alloc() crashes
* -bzzz
*/
luch = lu_object_find_at(env, ludev, fid, NULL);
if (IS_ERR(luch))
return (void *)luch;
if (lu_object_exists(luch)) {
lo = lu_object_locate(luch->lo_header, ludev->ld_type);
if (lo != NULL)
child = osd_obj(lo);
else
LU_OBJECT_DEBUG(D_ERROR, env, luch,
"%s: object can't be located "DFID"\n",
osd_dev(ludev)->od_svname, PFID(fid));
if (child == NULL) {
lu_object_put(env, luch);
CERROR("%s: Unable to get osd_object "DFID"\n",
osd_dev(ludev)->od_svname, PFID(fid));
child = ERR_PTR(-ENOENT);
}
} else {
LU_OBJECT_DEBUG(D_ERROR, env, luch,
"%s: lu_object does not exists "DFID"\n",
osd_dev(ludev)->od_svname, PFID(fid));
lu_object_put(env, luch);
child = ERR_PTR(-ENOENT);
}
return child;
}
static int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
struct lustre_capa *capa, __u64 opc)
{
const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
int rc;
if (!dev->od_fl_capa)
return 0;
if (capa == BYPASS_CAPA)
return 0;
if (!capa) {
CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
return -EACCES;
}
if (!lu_fid_eq(fid, &capa->lc_fid)) {
DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",PFID(fid));
return -EACCES;
}
if (!capa_opc_supported(capa, opc)) {
DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
return -EACCES;
}
if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
return -EACCES;
}
return 0;
}
/**
* Initialize osd Iterator for given osd index object.
*
* \param dt - osd index object
* \param attr - not used
* \param capa - BYPASS_CAPA
*/
static struct dt_it *osd_it_acct_init(const struct lu_env *env,
struct dt_object *dt,
__u32 attr,
struct lustre_capa *capa)
{
struct osd_thread_info *info = osd_oti_get(env);
struct osd_it_quota *it;
struct lu_object *lo = &dt->do_lu;
struct osd_device *osd = osd_dev(lo->lo_dev);
int rc;
ENTRY;
LASSERT(lu_object_exists(lo));
if (info == NULL)
RETURN(ERR_PTR(-ENOMEM));
it = &info->oti_it_quota;
memset(it, 0, sizeof(*it));
it->oiq_oid = osd_quota_fid2dmu(lu_object_fid(lo));
/* initialize zap cursor */
rc = -udmu_zap_cursor_init(&it->oiq_zc, &osd->od_objset, it->oiq_oid,0);
if (rc)
RETURN(ERR_PTR(rc));
/* take object reference */
lu_object_get(lo);
it->oiq_obj = osd_dt_obj(dt);
it->oiq_reset = 1;
RETURN((struct dt_it *)it);
}
