drivers/staging/lustre/lustre/mdc/mdc_internal.h

   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 void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars);
  44
  45 void mdc_pack_body(struct ptlrpc_request *req, const struct lu_fid *fid,
  46                    __u64 valid, int ea_size, __u32 suppgid, int flags);
  47 int mdc_pack_req(struct ptlrpc_request *req, int version, int opc);
  48 void mdc_is_subdir_pack(struct ptlrpc_request *req, const struct lu_fid *pfid,
  49                         const struct lu_fid *cfid, int flags);
  50 void mdc_swap_layouts_pack(struct ptlrpc_request *req,
  51                            struct md_op_data *op_data);
  52 void mdc_readdir_pack(struct ptlrpc_request *req, __u64 pgoff, __u32 size,
  53                       const struct lu_fid *fid);
  54 void mdc_getattr_pack(struct ptlrpc_request *req, __u64 valid, int flags,
  55                       struct md_op_data *data, int ea_size);
  56 void mdc_setattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  57                      void *ea, int ealen, void *ea2, int ea2len);
  58 void mdc_create_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  59                      const void *data, int datalen, __u32 mode, __u32 uid,
  60                      __u32 gid, cfs_cap_t capability, __u64 rdev);
  61 void mdc_open_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  62                    __u32 mode, __u64 rdev, __u64 flags, const void *data,
  63                    int datalen);
  64 void mdc_unlink_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  65 void mdc_getxattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  66 void mdc_link_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  67 void mdc_rename_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
  68                      const char *old, int oldlen, const char *new, int newlen);
  69 void mdc_close_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
  70 int mdc_enter_request(struct client_obd *cli);
  71 void mdc_exit_request(struct client_obd *cli);
  72
  73 /* mdc/mdc_locks.c */
  74 int mdc_set_lock_data(struct obd_export *exp,
  75                       __u64 *lockh, void *data, __u64 *bits);
  76
  77 int mdc_null_inode(struct obd_export *exp, const struct lu_fid *fid);
  78
  79 int mdc_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
  80                     ldlm_iterator_t it, void *data);
  81
  82 int mdc_intent_lock(struct obd_export *exp,
  83                     struct md_op_data *,
  84                     void *lmm, int lmmsize,
  85                     struct lookup_intent *, int,
  86                     struct ptlrpc_request **reqp,
  87                     ldlm_blocking_callback cb_blocking,
  88                     __u64 extra_lock_flags);
  89 int mdc_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
  90                 struct lookup_intent *it, struct md_op_data *op_data,
  91                 struct lustre_handle *lockh, void *lmm, int lmmsize,
  92                 struct ptlrpc_request **req, __u64 extra_lock_flags);
  93
  94 int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
  95                             struct list_head *cancels, ldlm_mode_t mode,
  96                             __u64 bits);
  97 /* mdc/mdc_request.c */
  98 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
  99                   struct md_op_data *op_data);
 100 struct obd_client_handle;
 101
 102 int mdc_set_open_replay_data(struct obd_export *exp,
 103                              struct obd_client_handle *och,
 104                              struct lookup_intent *it);
 105
 106 void mdc_commit_open(struct ptlrpc_request *req);
 107 void mdc_replay_open(struct ptlrpc_request *req);
 108
 109 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
 110                const void *data, int datalen, int mode, __u32 uid, __u32 gid,
 111                cfs_cap_t capability, __u64 rdev,
 112                struct ptlrpc_request **request);
 113 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
 114              struct ptlrpc_request **request);
 115 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
 116                const char *old, int oldlen, const char *new, int newlen,
 117                struct ptlrpc_request **request);
 118 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
 119                 void *ea, int ealen, void *ea2, int ea2len,
 120                 struct ptlrpc_request **request, struct md_open_data **mod);
 121 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
 122                struct ptlrpc_request **request);
 123 int mdc_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
 124                       ldlm_policy_data_t *policy, ldlm_mode_t mode,
 125                       ldlm_cancel_flags_t flags, void *opaque);
 126
 127 int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
 128                         struct lu_fid *fid, __u64 *bits);
 129
 130 int mdc_intent_getattr_async(struct obd_export *exp,
 131                              struct md_enqueue_info *minfo,
 132                              struct ldlm_enqueue_info *einfo);
 133
 134 ldlm_mode_t mdc_lock_match(struct obd_export *exp, __u64 flags,
 135                            const struct lu_fid *fid, ldlm_type_t type,
 136                            ldlm_policy_data_t *policy, ldlm_mode_t mode,
 137                            struct lustre_handle *lockh);
 138
 139 static inline int mdc_prep_elc_req(struct obd_export *exp,
 140                                    struct ptlrpc_request *req, int opc,
 141                                    struct list_head *cancels, int count)
 142 {
 143         return ldlm_prep_elc_req(exp, req, LUSTRE_MDS_VERSION, opc, 0, cancels,
 144                                  count);
 145 }
 146
 147 #endif