LXR linux/drivers/staging/lustre/lustre/mdc/mdc

   1/*
   2 * GPL HEADER START
   3 *
   4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 only,
   8 * as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * General Public License version 2 for more details (a copy is included
  14 * in the LICENSE file that accompanied this code).
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * version 2 along with this program; If not, see
  18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19 *
  20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21 * CA 95054 USA or visit www.sun.com if you need additional information or
  22 * have any questions.
  23 *
  24 * GPL HEADER END
  25 */
  26/*
  27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28 * Use is subject to license terms.
  29 *
  30 * Copyright (c) 2011, Intel Corporation.
  31 */
  32/*
  33 * This file is part of Lustre, http://www.lustre.org/
  34 * Lustre is a trademark of Sun Microsystems, Inc.
  35 */
  36
  37#ifndef _MDC_INTERNAL_H
  38#define _MDC_INTERNAL_H
  39
  40#include "../include/lustre_mdc.h"
  41#include "../include/lustre_mds.h"
  42
  43#if defined (CONFIG_PROC_FS)
  44void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars);
  45#else
  46static inline void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars)
  47{
  48        memset(lvars, 0, sizeof(*lvars));
  49}
  50#endif
  51
  52void mdc_pack_body(struct ptlrpc_request *req, const struct lu_fid *fid,
  53                   struct obd_capa *oc, __u64 valid, int ea_size,
  54                   __u32 suppgid, int flags);
  55void mdc_pack_capa(struct ptlrpc_request *req,
  56                   const struct req_msg_field *field, struct obd_capa *oc);
  57int mdc_pack_req(struct ptlrpc_request *req, int version, int opc);
  58void mdc_is_subdir_pack(struct ptlrpc_request *req, const struct lu_fid *pfid,
  59                        const struct lu_fid *cfid, int flags);
  60void mdc_swap_layouts_pack(struct ptlrpc_request *req,
  61                           struct md_op_data *op_data);
  62void mdc_readdir_pack(struct ptlrpc_request *req, __u64 pgoff, __u32 size,
  63                      const struct lu_fid *fid, struct obd_capa *oc);
  64void mdc_getattr_pack(struct ptlrpc_request *req, __u64 valid, int flags,
  65                      struct md_op_data *data, int ea_size);
  66void mdc_setattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  67                     void *ea, int ealen, void *ea2, int ea2len);
  68void mdc_create_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  69                     const void *data, int datalen, __u32 mode, __u32 uid,
  70                     __u32 gid, cfs_cap_t capability, __u64 rdev);
  71void mdc_open_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  72                   __u32 mode, __u64 rdev, __u64 flags, const void *data,
  73                   int datalen);
  74void mdc_unlink_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  75void mdc_getxattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  76void mdc_link_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  77void mdc_rename_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  78                     const char *old, int oldlen, const char *new, int newlen);
  79void mdc_close_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  80int mdc_enter_request(struct client_obd *cli);
  81void mdc_exit_request(struct client_obd *cli);
  82
  83/* mdc/mdc_locks.c */
  84int mdc_set_lock_data(struct obd_export *exp,
  85                      __u64 *lockh, void *data, __u64 *bits);
  86
  87int mdc_null_inode(struct obd_export *exp, const struct lu_fid *fid);
  88
  89int mdc_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
  90                    ldlm_iterator_t it, void *data);
  91
  92int mdc_intent_lock(struct obd_export *exp,
  93                    struct md_op_data *,
  94                    void *lmm, int lmmsize,
  95                    struct lookup_intent *, int,
  96                    struct ptlrpc_request **reqp,
  97                    ldlm_blocking_callback cb_blocking,
  98                    __u64 extra_lock_flags);
  99int mdc_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
 100                struct lookup_intent *it, struct md_op_data *op_data,
 101                struct lustre_handle *lockh, void *lmm, int lmmsize,
 102                struct ptlrpc_request **req, __u64 extra_lock_flags);
 103
 104int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
 105                            struct list_head *cancels, ldlm_mode_t mode,
 106                            __u64 bits);
 107/* mdc/mdc_request.c */
 108int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
 109                  struct md_op_data *op_data);
 110
 111int mdc_open(struct obd_export *exp, obd_id ino, int type, int flags,
 112             struct lov_mds_md *lmm, int lmm_size, struct lustre_handle *fh,
 113             struct ptlrpc_request **);
 114
 115struct obd_client_handle;
 116
 117int mdc_get_lustre_md(struct obd_export *md_exp, struct ptlrpc_request *req,
 118                      struct obd_export *dt_exp, struct obd_export *lmv_exp,
 119                      struct lustre_md *md);
 120
 121int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md);
 122
 123int mdc_set_open_replay_data(struct obd_export *exp,
 124                             struct obd_client_handle *och,
 125                             struct lookup_intent *it);
 126
 127int mdc_clear_open_replay_data(struct obd_export *exp,
 128                               struct obd_client_handle *och);
 129void mdc_commit_open(struct ptlrpc_request *req);
 130void mdc_replay_open(struct ptlrpc_request *req);
 131
 132int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
 133               const void *data, int datalen, int mode, __u32 uid, __u32 gid,
 134               cfs_cap_t capability, __u64 rdev,
 135               struct ptlrpc_request **request);
 136int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
 137             struct ptlrpc_request **request);
 138int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
 139               const char *old, int oldlen, const char *new, int newlen,
 140               struct ptlrpc_request **request);
 141int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
 142                void *ea, int ealen, void *ea2, int ea2len,
 143                struct ptlrpc_request **request, struct md_open_data **mod);
 144int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
 145               struct ptlrpc_request **request);
 146int mdc_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
 147                      ldlm_policy_data_t *policy, ldlm_mode_t mode,
 148                      ldlm_cancel_flags_t flags, void *opaque);
 149
 150static inline void mdc_set_capa_size(struct ptlrpc_request *req,
 151                                     const struct req_msg_field *field,
 152                                     struct obd_capa *oc)
 153{
 154        if (oc == NULL)
 155                req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
 156        else
 157                /* it is already calculated as sizeof struct obd_capa */
 158                ;
 159}
 160
 161int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
 162                        struct lu_fid *fid, __u64 *bits);
 163
 164int mdc_intent_getattr_async(struct obd_export *exp,
 165                             struct md_enqueue_info *minfo,
 166                             struct ldlm_enqueue_info *einfo);
 167
 168ldlm_mode_t mdc_lock_match(struct obd_export *exp, __u64 flags,
 169                           const struct lu_fid *fid, ldlm_type_t type,
 170                           ldlm_policy_data_t *policy, ldlm_mode_t mode,
 171                           struct lustre_handle *lockh);
 172
 173static inline int mdc_prep_elc_req(struct obd_export *exp,
 174                                   struct ptlrpc_request *req, int opc,
 175                                   struct list_head *cancels, int count)
 176{
 177        return ldlm_prep_elc_req(exp, req, LUSTRE_MDS_VERSION, opc, 0, cancels,
 178                                 count);
 179}
 180
 181#endif
 182