RETURN(rc);
}
-/* get the first parent fid from link EA */
-static int mdd_pfid_get(const struct lu_env *env,
- struct mdd_object *mdd_obj, struct md_attr *ma)
-{
- struct lu_buf *buf;
- struct link_ea_header *leh;
- struct link_ea_entry *lee;
- struct lu_fid *pfid = &ma->ma_pfid;
- ENTRY;
-
- if (ma->ma_valid & MA_PFID)
- RETURN(0);
-
- buf = mdd_links_get(env, mdd_obj);
- if (IS_ERR(buf))
- RETURN(PTR_ERR(buf));
-
- leh = buf->lb_buf;
- lee = (struct link_ea_entry *)(leh + 1);
- memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
- fid_be_to_cpu(pfid, pfid);
- ma->ma_valid |= MA_PFID;
- if (buf->lb_len > OBD_ALLOC_BIG)
- /* if we vmalloced a large buffer drop it */
- mdd_buf_put(buf);
- RETURN(0);
-}
-
int mdd_lmm_get_locked(const struct lu_env *env, struct mdd_object *mdd_obj,
struct md_attr *ma)
{
RETURN(rc);
}
-/* get lmv EA only*/
-static int __mdd_lmv_get(const struct lu_env *env,
- struct mdd_object *mdd_obj, struct md_attr *ma)
-{
- int rc;
- ENTRY;
-
- if (ma->ma_valid & MA_LMV)
- RETURN(0);
-
- rc = mdd_get_md(env, mdd_obj, ma->ma_lmv, &ma->ma_lmv_size,
- XATTR_NAME_LMV);
- if (rc > 0) {
- ma->ma_valid |= MA_LMV;
- rc = 0;
- }
- RETURN(rc);
-}
-
-static int __mdd_lma_get(const struct lu_env *env, struct mdd_object *mdd_obj,
- struct md_attr *ma)
-{
- struct mdd_thread_info *info = mdd_env_info(env);
- struct lustre_mdt_attrs *lma =
- (struct lustre_mdt_attrs *)info->mti_xattr_buf;
- int lma_size;
- int rc;
- ENTRY;
-
- /* If all needed data are already valid, nothing to do */
- if ((ma->ma_valid & (MA_HSM | MA_SOM)) ==
- (ma->ma_need & (MA_HSM | MA_SOM)))
- RETURN(0);
-
- /* Read LMA from disk EA */
- lma_size = sizeof(info->mti_xattr_buf);
- rc = mdd_get_md(env, mdd_obj, lma, &lma_size, XATTR_NAME_LMA);
- if (rc <= 0)
- RETURN(rc);
-
- /* Useless to check LMA incompatibility because this is already done in
- * osd_ea_fid_get(), and this will fail long before this code is
- * called.
- * So, if we are here, LMA is compatible.
- */
-
- lustre_lma_swab(lma);
-
- /* Swab and copy LMA */
- if (ma->ma_need & MA_HSM) {
- if (lma->lma_compat & LMAC_HSM)
- ma->ma_hsm.mh_flags = lma->lma_flags & HSM_FLAGS_MASK;
- else
- ma->ma_hsm.mh_flags = 0;
- ma->ma_valid |= MA_HSM;
- }
-
- /* Copy SOM */
- if (ma->ma_need & MA_SOM && lma->lma_compat & LMAC_SOM) {
- LASSERT(ma->ma_som != NULL);
- ma->ma_som->msd_ioepoch = lma->lma_ioepoch;
- ma->ma_som->msd_size = lma->lma_som_size;
- ma->ma_som->msd_blocks = lma->lma_som_blocks;
- ma->ma_som->msd_mountid = lma->lma_som_mountid;
- ma->ma_valid |= MA_SOM;
- }
-
- RETURN(0);
-}
-
-int mdd_attr_get_internal(const struct lu_env *env, struct mdd_object *mdd_obj,
- struct md_attr *ma)
-{
- int rc = 0;
- ENTRY;
-
- if (ma->ma_need & MA_INODE)
- rc = mdd_iattr_get(env, mdd_obj, ma);
-
- if (rc == 0 && ma->ma_need & MA_LOV) {
- if (S_ISREG(mdd_object_type(mdd_obj)) ||
- S_ISDIR(mdd_object_type(mdd_obj)))
- rc = __mdd_lmm_get(env, mdd_obj, ma);
- }
- if (rc == 0 && ma->ma_need & MA_PFID && !(ma->ma_valid & MA_LOV)) {
- if (S_ISREG(mdd_object_type(mdd_obj)))
- rc = mdd_pfid_get(env, mdd_obj, ma);
- }
- if (rc == 0 && ma->ma_need & MA_LMV) {
- if (S_ISDIR(mdd_object_type(mdd_obj)))
- rc = __mdd_lmv_get(env, mdd_obj, ma);
- }
- if (rc == 0 && ma->ma_need & (MA_HSM | MA_SOM)) {
- if (S_ISREG(mdd_object_type(mdd_obj)))
- rc = __mdd_lma_get(env, mdd_obj, ma);
- }
-#ifdef CONFIG_FS_POSIX_ACL
- if (rc == 0 && ma->ma_need & MA_ACL_DEF) {
- if (S_ISDIR(mdd_object_type(mdd_obj)))
- rc = mdd_def_acl_get(env, mdd_obj, ma);
- }
-#endif
- CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
- rc, ma->ma_valid, ma->ma_lmm);
- RETURN(rc);
-}
-
-int mdd_attr_get_internal_locked(const struct lu_env *env,
- struct mdd_object *mdd_obj, struct md_attr *ma)
-{
- int rc;
- int needlock = ma->ma_need &
- (MA_LOV | MA_LMV | MA_ACL_DEF | MA_HSM | MA_SOM | MA_PFID);
-
- if (needlock)
- mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdd_attr_get_internal(env, mdd_obj, ma);
- if (needlock)
- mdd_read_unlock(env, mdd_obj);
- return rc;
-}
-
/*
* No permission check is needed.
*/
int rc;
ENTRY;
- rc = mdd_attr_get_internal_locked(env, mdd_obj, ma);
+ rc = mdd_iattr_get(env, mdd_obj, ma);
RETURN(rc);
}
const char *name)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct mdd_device *mdd = mdo2mdd(obj);
+ struct lu_fid rootfid;
+ int is_root;
int rc;
ENTRY;
mdd_object_capa(env, mdd_obj));
mdd_read_unlock(env, mdd_obj);
+ dt_root_get(env, mdd->mdd_child, &rootfid);
+ is_root = lu_fid_eq(mdd_object_fid(mdd_obj), &rootfid);
+
+ /* XXX: a temp. solution till LOD/OSP is landed */
+ if (rc == -ENODATA && strcmp(name, XATTR_NAME_LOV) == 0 && is_root) {
+ if (buf->lb_buf == NULL) {
+ rc = sizeof(struct lov_user_md);
+ } else if (buf->lb_len >= sizeof(struct lov_user_md)) {
+ rc = mdd_get_default_md(mdd_obj, buf->lb_buf);
+ } else {
+ rc = -ERANGE;
+ }
+ }
+
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff