| /* |
| * 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.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef _LMV_INTERNAL_H_ |
| #define _LMV_INTERNAL_H_ |
| |
| #include "../include/lustre/lustre_idl.h" |
| #include "../include/obd.h" |
| |
| #define LMV_MAX_TGT_COUNT 128 |
| |
| #define LL_IT2STR(it) \ |
| ((it) ? ldlm_it2str((it)->it_op) : "0") |
| |
| int lmv_check_connect(struct obd_device *obd); |
| |
| int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, |
| void *lmm, int lmmsize, struct lookup_intent *it, |
| int flags, struct ptlrpc_request **reqp, |
| ldlm_blocking_callback cb_blocking, |
| __u64 extra_lock_flags); |
| |
| int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds); |
| int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds); |
| int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid, |
| struct md_op_data *op_data); |
| |
| static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req) |
| { |
| struct mdt_body *body; |
| struct lmv_stripe_md *mea; |
| |
| LASSERT(req); |
| |
| body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); |
| |
| if (!body || !S_ISDIR(body->mode) || !body->eadatasize) |
| return NULL; |
| |
| mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, |
| body->eadatasize); |
| if (mea->mea_count == 0) |
| return NULL; |
| if (mea->mea_magic != MEA_MAGIC_LAST_CHAR && |
| mea->mea_magic != MEA_MAGIC_ALL_CHARS && |
| mea->mea_magic != MEA_MAGIC_HASH_SEGMENT) |
| return NULL; |
| |
| return mea; |
| } |
| |
| static inline int lmv_get_easize(struct lmv_obd *lmv) |
| { |
| return sizeof(struct lmv_stripe_md) + |
| lmv->desc.ld_tgt_count * |
| sizeof(struct lu_fid); |
| } |
| |
| static inline struct lmv_tgt_desc * |
| lmv_get_target(struct lmv_obd *lmv, u32 mds) |
| { |
| int count = lmv->desc.ld_tgt_count; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (!lmv->tgts[i]) |
| continue; |
| |
| if (lmv->tgts[i]->ltd_idx == mds) |
| return lmv->tgts[i]; |
| } |
| |
| return ERR_PTR(-ENODEV); |
| } |
| |
| static inline struct lmv_tgt_desc * |
| lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) |
| { |
| u32 mds = 0; |
| int rc; |
| |
| if (lmv->desc.ld_tgt_count > 1) { |
| rc = lmv_fld_lookup(lmv, fid, &mds); |
| if (rc) |
| return ERR_PTR(rc); |
| } |
| |
| return lmv_get_target(lmv, mds); |
| } |
| |
| struct lmv_tgt_desc |
| *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, |
| struct lu_fid *fid); |
| /* lproc_lmv.c */ |
| void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars); |
| |
| extern struct file_operations lmv_proc_target_fops; |
| |
| #endif |