- return fid_seq_is_igif(fid_seq(fid));
-}
-
-struct ost_id {
- obd_id oi_id;
- obd_seq oi_seq;
-};
-
-static inline int fid_seq_is_norm(const __u64 seq)
-{
- return (seq >= FID_SEQ_NORMAL);
-}
-
-static inline int fid_is_norm(const struct lu_fid *fid)
-{
- return fid_seq_is_norm(fid_seq(fid));
-}
-
-/* convert an OST objid into an IDIF FID SEQ number */
-static inline obd_seq fid_idif_seq(obd_id id, __u32 ost_idx)
-{
- return FID_SEQ_IDIF | (ost_idx << 16) | ((id >> 32) & 0xffff);
-}
-
-/* convert a packed IDIF FID into an OST objid */
-static inline obd_id fid_idif_id(obd_seq seq, __u32 oid, __u32 ver)
-{
- return ((__u64)ver << 48) | ((seq & 0xffff) << 32) | oid;
-}
-
-/* unpack an ostid (id/seq) from a wire/disk structure into an IDIF FID */
-static inline void ostid_idif_unpack(struct ost_id *ostid,
- struct lu_fid *fid, __u32 ost_idx)
-{
- fid->f_seq = fid_idif_seq(ostid->oi_id, ost_idx);
- fid->f_oid = ostid->oi_id; /* truncate to 32 bits by assignment */
- fid->f_ver = ostid->oi_id >> 48; /* in theory, not currently used */
-}
-
-/* unpack an ostid (id/seq) from a wire/disk structure into a non-IDIF FID */
-static inline void ostid_fid_unpack(struct ost_id *ostid, struct lu_fid *fid)
-{
- fid->f_seq = ostid->oi_seq;
- fid->f_oid = ostid->oi_id; /* truncate to 32 bits by assignment */
- fid->f_ver = ostid->oi_id >> 32; /* in theory, not currently used */
-}
-
-/* Unpack an OST object id/seq (group) into a FID. This is needed for
- * converting all obdo, lmm, lsm, etc. 64-bit id/seq pairs into proper
- * FIDs. Note that if an id/seq is already in FID/IDIF format it will
- * be passed through unchanged. Only legacy OST objects in "group 0"
- * will be mapped into the IDIF namespace so that they can fit into the
- * struct lu_fid fields without loss. For reference see:
- * http://arch.lustre.org/index.php?title=Interoperability_fids_zfs
- */
-static inline int fid_ostid_unpack(struct lu_fid *fid, struct ost_id *ostid,
- __u32 ost_idx)
-{
- if (ost_idx > 0xffff) {
- CERROR("bad ost_idx, seq:"LPU64" id:"LPU64" ost_idx:%u\n",
- ostid->oi_seq, ostid->oi_id, ost_idx);
- return -EBADF;
- }
-
- if (fid_seq_is_mdt0(ostid->oi_seq)) {
- /* This is a "legacy" (old 1.x/2.early) OST object in "group 0"
- * that we map into the IDIF namespace. It allows up to 2^48
- * objects per OST, as this is the object namespace that has
- * been in production for years. This can handle create rates
- * of 1M objects/s/OST for 9 years, or combinations thereof. */
- if (ostid->oi_id >= IDIF_MAX_OID) {
- CERROR("bad MDT0 id, seq:"LPU64" id:"LPU64" ost_idx:%u\n",
- ostid->oi_seq, ostid->oi_id, ost_idx);
- return -EBADF;
- }
- ostid_idif_unpack(ostid, fid, ost_idx);
-
- } else if (fid_seq_is_rsvd(ostid->oi_seq)) {
- /* These are legacy OST objects for LLOG/ECHO and CMD testing.
- * We only support 2^32 objects in these groups, and cannot
- * uniquely identify them in the system (i.e. they are the
- * duplicated on all OSTs), but this is not strictly required
- * for the old object protocol, which has a separate ost_idx. */
- if (ostid->oi_id >= 0xffffffffULL) {
- CERROR("bad RSVD id, seq:"LPU64" id:"LPU64" ost_idx:%u\n",
- ostid->oi_seq, ostid->oi_id, ost_idx);
- return -EBADF;
- }
- ostid_fid_unpack(ostid, fid);
-
- } else if (unlikely(fid_seq_is_igif(ostid->oi_seq))) {
- /* This is an MDT inode number, which should never collide with
- * proper OST object IDs, and is probably a broken filesystem */
- CERROR("bad IGIF, seq:"LPU64" id:"LPU64" ost_idx:%u\n",
- ostid->oi_seq, ostid->oi_id, ost_idx);
- return -EBADF;
-
- } else /* if (fid_seq_is_idif(seq) || fid_seq_is_norm(seq)) */ {
- /* This is either an IDIF object, which identifies objects across
- * all OSTs, or a regular FID. The IDIF namespace maps legacy
- * OST objects into the FID namespace. In both cases, we just
- * pass the FID through, no conversion needed. */
- ostid_fid_unpack(ostid, fid);
- }
-
- return 0;
-}
-
-/* pack an IDIF FID into an ostid (id/seq) for the wire/disk */
-static inline void ostid_idif_pack(struct lu_fid *fid, struct ost_id *ostid)
-{
- ostid->oi_seq = FID_SEQ_OST_MDT0;
- ostid->oi_id = fid_idif_id(fid->f_seq, fid->f_oid, fid->f_ver);
-}
-
-/* pack a non-IDIF FID into an ostid (id/seq) for the wire/disk */
-static inline void ostid_fid_pack(struct lu_fid *fid, struct ost_id *ostid)
-{
- ostid->oi_seq = fid_seq(fid);
- ostid->oi_id = fid_ver_oid(fid);
-}
-
-/* pack any OST FID into an ostid (id/seq) for the wire/disk */
-static inline int fid_ostid_pack(struct lu_fid *fid, struct ost_id *ostid)
-{
- if (unlikely(fid_seq_is_igif(fid->f_seq))) {
- CERROR("bad IGIF, "DFID"\n", PFID(fid));
- return -EBADF;
- }
-
- if (fid_is_idif(fid))
- ostid_idif_pack(fid, ostid);
- else
- ostid_fid_pack(fid, ostid);
-
- return 0;
-}
-
-/* extract OST sequence (group) from a wire ost_id (id/seq) pair */
-static inline obd_seq ostid_seq(struct ost_id *ostid)
-{
- if (unlikely(fid_seq_is_igif(ostid->oi_seq)))
- CWARN("bad IGIF, oi_seq: "LPU64" oi_id: "LPX64"\n",
- ostid->oi_seq, ostid->oi_id);
-
- if (unlikely(fid_seq_is_idif(ostid->oi_seq)))
- return FID_SEQ_OST_MDT0;
-
- return ostid->oi_seq;
-}
-
-/* extract OST objid from a wire ost_id (id/seq) pair */
-static inline obd_id ostid_id(struct ost_id *ostid)
-{
- if (ostid->oi_seq == FID_SEQ_OST_MDT0)
- return ostid->oi_id & IDIF_OID_MASK;
-
- if (fid_seq_is_rsvd(ostid->oi_seq))
- return ostid->oi_id & OBIF_OID_MASK;
-
- if (fid_seq_is_idif(ostid->oi_seq))
- return fid_idif_id(ostid->oi_seq, ostid->oi_id, 0);
-
- return ostid->oi_id;