diff options
Diffstat (limited to 'drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h')
| -rw-r--r-- | drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h deleted file mode 100644 index 2e7a8d103777..000000000000 --- a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h +++ /dev/null @@ -1,293 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2014, Intel Corporation. - * - * Copyright 2016 Cray Inc, all rights reserved. - * Author: Ben Evans. - * - * all fid manipulation functions go here - * - * FIDS are globally unique within a Lustre filessytem, and are made up - * of three parts: sequence, Object ID, and version. - * - */ -#ifndef _UAPI_LUSTRE_FID_H_ -#define _UAPI_LUSTRE_FID_H_ - -#include <uapi/linux/lustre/lustre_idl.h> - -/** returns fid object sequence */ -static inline __u64 fid_seq(const struct lu_fid *fid) -{ - return fid->f_seq; -} - -/** returns fid object id */ -static inline __u32 fid_oid(const struct lu_fid *fid) -{ - return fid->f_oid; -} - -/** returns fid object version */ -static inline __u32 fid_ver(const struct lu_fid *fid) -{ - return fid->f_ver; -} - -static inline void fid_zero(struct lu_fid *fid) -{ - memset(fid, 0, sizeof(*fid)); -} - -static inline __u64 fid_ver_oid(const struct lu_fid *fid) -{ - return (__u64)fid_ver(fid) << 32 | fid_oid(fid); -} - -static inline bool fid_seq_is_mdt0(__u64 seq) -{ - return seq == FID_SEQ_OST_MDT0; -} - -static inline bool fid_seq_is_mdt(__u64 seq) -{ - return seq == FID_SEQ_OST_MDT0 || seq >= FID_SEQ_NORMAL; -}; - -static inline bool fid_seq_is_echo(__u64 seq) -{ - return seq == FID_SEQ_ECHO; -} - -static inline bool fid_is_echo(const struct lu_fid *fid) -{ - return fid_seq_is_echo(fid_seq(fid)); -} - -static inline bool fid_seq_is_llog(__u64 seq) -{ - return seq == FID_SEQ_LLOG; -} - -static inline bool fid_is_llog(const struct lu_fid *fid) -{ - /* file with OID == 0 is not llog but contains last oid */ - return fid_seq_is_llog(fid_seq(fid)) && fid_oid(fid) > 0; -} - -static inline bool fid_seq_is_rsvd(__u64 seq) -{ - return seq > FID_SEQ_OST_MDT0 && seq <= FID_SEQ_RSVD; -}; - -static inline bool fid_seq_is_special(__u64 seq) -{ - return seq == FID_SEQ_SPECIAL; -}; - -static inline bool fid_seq_is_local_file(__u64 seq) -{ - return seq == FID_SEQ_LOCAL_FILE || - seq == FID_SEQ_LOCAL_NAME; -}; - -static inline bool fid_seq_is_root(__u64 seq) -{ - return seq == FID_SEQ_ROOT; -} - -static inline bool fid_seq_is_dot(__u64 seq) -{ - return seq == FID_SEQ_DOT_LUSTRE; -} - -static inline bool fid_seq_is_default(__u64 seq) -{ - return seq == FID_SEQ_LOV_DEFAULT; -} - -static inline bool fid_is_mdt0(const struct lu_fid *fid) -{ - return fid_seq_is_mdt0(fid_seq(fid)); -} - -/** - * Check if a fid is igif or not. - * \param fid the fid to be tested. - * \return true if the fid is an igif; otherwise false. - */ -static inline bool fid_seq_is_igif(__u64 seq) -{ - return seq >= FID_SEQ_IGIF && seq <= FID_SEQ_IGIF_MAX; -} - -static inline bool fid_is_igif(const struct lu_fid *fid) -{ - return fid_seq_is_igif(fid_seq(fid)); -} - -/** - * Check if a fid is idif or not. - * \param fid the fid to be tested. - * \return true if the fid is an idif; otherwise false. - */ -static inline bool fid_seq_is_idif(__u64 seq) -{ - return seq >= FID_SEQ_IDIF && seq <= FID_SEQ_IDIF_MAX; -} - -static inline bool fid_is_idif(const struct lu_fid *fid) -{ - return fid_seq_is_idif(fid_seq(fid)); -} - -static inline bool fid_is_local_file(const struct lu_fid *fid) -{ - return fid_seq_is_local_file(fid_seq(fid)); -} - -static inline bool fid_seq_is_norm(__u64 seq) -{ - return (seq >= FID_SEQ_NORMAL); -} - -static inline bool 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 __u64 fid_idif_seq(__u64 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 __u64 fid_idif_id(__u64 seq, __u32 oid, __u32 ver) -{ - return ((__u64)ver << 48) | ((seq & 0xffff) << 32) | oid; -} - -static inline __u32 idif_ost_idx(__u64 seq) -{ - return (seq >> 16) & 0xffff; -} - -/* extract ost index from IDIF FID */ -static inline __u32 fid_idif_ost_idx(const struct lu_fid *fid) -{ - return idif_ost_idx(fid_seq(fid)); -} - -/** - * Get inode number from an igif. - * \param fid an igif to get inode number from. - * \return inode number for the igif. - */ -static inline ino_t lu_igif_ino(const struct lu_fid *fid) -{ - return fid_seq(fid); -} - -/** - * Get inode generation from an igif. - * \param fid an igif to get inode generation from. - * \return inode generation for the igif. - */ -static inline __u32 lu_igif_gen(const struct lu_fid *fid) -{ - return fid_oid(fid); -} - -/** - * Build igif from the inode number/generation. - */ -static inline void lu_igif_build(struct lu_fid *fid, __u32 ino, __u32 gen) -{ - fid->f_seq = ino; - fid->f_oid = gen; - fid->f_ver = 0; -} - -/* - * Fids are transmitted across network (in the sender byte-ordering), - * and stored on disk in big-endian order. - */ -static inline void fid_cpu_to_le(struct lu_fid *dst, const struct lu_fid *src) -{ - dst->f_seq = __cpu_to_le64(fid_seq(src)); - dst->f_oid = __cpu_to_le32(fid_oid(src)); - dst->f_ver = __cpu_to_le32(fid_ver(src)); -} - -static inline void fid_le_to_cpu(struct lu_fid *dst, const struct lu_fid *src) -{ - dst->f_seq = __le64_to_cpu(fid_seq(src)); - dst->f_oid = __le32_to_cpu(fid_oid(src)); - dst->f_ver = __le32_to_cpu(fid_ver(src)); -} - -static inline void fid_cpu_to_be(struct lu_fid *dst, const struct lu_fid *src) -{ - dst->f_seq = __cpu_to_be64(fid_seq(src)); - dst->f_oid = __cpu_to_be32(fid_oid(src)); - dst->f_ver = __cpu_to_be32(fid_ver(src)); -} - -static inline void fid_be_to_cpu(struct lu_fid *dst, const struct lu_fid *src) -{ - dst->f_seq = __be64_to_cpu(fid_seq(src)); - dst->f_oid = __be32_to_cpu(fid_oid(src)); - dst->f_ver = __be32_to_cpu(fid_ver(src)); -} - -static inline bool fid_is_sane(const struct lu_fid *fid) -{ - return fid && ((fid_seq(fid) >= FID_SEQ_START && !fid_ver(fid)) || - fid_is_igif(fid) || fid_is_idif(fid) || - fid_seq_is_rsvd(fid_seq(fid))); -} - -static inline bool lu_fid_eq(const struct lu_fid *f0, const struct lu_fid *f1) -{ - return !memcmp(f0, f1, sizeof(*f0)); -} - -static inline int lu_fid_cmp(const struct lu_fid *f0, - const struct lu_fid *f1) -{ - if (fid_seq(f0) != fid_seq(f1)) - return fid_seq(f0) > fid_seq(f1) ? 1 : -1; - - if (fid_oid(f0) != fid_oid(f1)) - return fid_oid(f0) > fid_oid(f1) ? 1 : -1; - - if (fid_ver(f0) != fid_ver(f1)) - return fid_ver(f0) > fid_ver(f1) ? 1 : -1; - - return 0; -} -#endif |