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
44 void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars);
45 #else
lprocfs_mdc_init_vars(struct lprocfs_static_vars * lvars)46 static inline void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars)
47 {
48 memset(lvars, 0, sizeof(*lvars));
49 }
50 #endif
51
52 void 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);
55 void mdc_pack_capa(struct ptlrpc_request *req,
56 const struct req_msg_field *field, struct obd_capa *oc);
57 int mdc_pack_req(struct ptlrpc_request *req, int version, int opc);
58 void mdc_is_subdir_pack(struct ptlrpc_request *req, const struct lu_fid *pfid,
59 const struct lu_fid *cfid, int flags);
60 void mdc_swap_layouts_pack(struct ptlrpc_request *req,
61 struct md_op_data *op_data);
62 void mdc_readdir_pack(struct ptlrpc_request *req, __u64 pgoff, __u32 size,
63 const struct lu_fid *fid, struct obd_capa *oc);
64 void mdc_getattr_pack(struct ptlrpc_request *req, __u64 valid, int flags,
65 struct md_op_data *data, int ea_size);
66 void mdc_setattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
67 void *ea, int ealen, void *ea2, int ea2len);
68 void 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);
71 void 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);
74 void mdc_unlink_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
75 void mdc_getxattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
76 void mdc_link_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
77 void mdc_rename_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
78 const char *old, int oldlen, const char *new, int newlen);
79 void mdc_close_pack(struct ptlrpc_request *req, struct md_op_data *op_data);
80 int mdc_enter_request(struct client_obd *cli);
81 void mdc_exit_request(struct client_obd *cli);
82
83 /* mdc/mdc_locks.c */
84 int mdc_set_lock_data(struct obd_export *exp,
85 __u64 *lockh, void *data, __u64 *bits);
86
87 int mdc_null_inode(struct obd_export *exp, const struct lu_fid *fid);
88
89 int mdc_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
90 ldlm_iterator_t it, void *data);
91
92 int 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);
99 int 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
104 int 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 */
108 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
109 struct md_op_data *op_data);
110
111 int mdc_open(struct obd_export *exp, u64 ino, int type, int flags,
112 struct lov_mds_md *lmm, int lmm_size, struct lustre_handle *fh,
113 struct ptlrpc_request **);
114
115 struct obd_client_handle;
116
117 int 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
121 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md);
122
123 int mdc_set_open_replay_data(struct obd_export *exp,
124 struct obd_client_handle *och,
125 struct lookup_intent *it);
126
127 int mdc_clear_open_replay_data(struct obd_export *exp,
128 struct obd_client_handle *och);
129 void mdc_commit_open(struct ptlrpc_request *req);
130 void mdc_replay_open(struct ptlrpc_request *req);
131
132 int 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);
136 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
137 struct ptlrpc_request **request);
138 int 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);
141 int 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);
144 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
145 struct ptlrpc_request **request);
146 int 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
mdc_set_capa_size(struct ptlrpc_request * req,const struct req_msg_field * field,struct obd_capa * oc)150 static 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
161 int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
162 struct lu_fid *fid, __u64 *bits);
163
164 int mdc_intent_getattr_async(struct obd_export *exp,
165 struct md_enqueue_info *minfo,
166 struct ldlm_enqueue_info *einfo);
167
168 ldlm_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
mdc_prep_elc_req(struct obd_export * exp,struct ptlrpc_request * req,int opc,struct list_head * cancels,int count)173 static 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