1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * This file is part of Lustre, http://www.lustre.org
7 * See also lustre_idl.h for wire formats of requests.
13 #include <lustre_handles.h>
14 #include <libcfs/kp30.h>
15 #include <lustre/lustre_idl.h>
16 #include <lustre_lib.h>
17 #include <lustre_dlm.h>
18 #include <lustre_log.h>
19 #include <lustre_export.h>
21 #if defined(__linux__)
22 #include <linux/lustre_mds.h>
23 #elif defined(__APPLE__)
24 #include <darwin/lustre_mds.h>
25 #elif defined(__WINNT__)
26 #include <winnt/lustre_mds.h>
28 #error Unsupported operating system.
31 struct ldlm_lock_desc;
33 struct ptlrpc_connection;
36 struct ptlrpc_request;
41 struct mds_body *body;
42 struct lov_stripe_md *lsm;
43 #ifdef CONFIG_FS_POSIX_ACL
44 struct posix_acl *posix_acl;
61 struct mds_update_record {
63 struct ll_fid *ur_fid1;
64 struct ll_fid *ur_fid2;
72 struct llog_cookie *ur_logcookies;
73 struct iattr ur_iattr;
74 struct lvfs_ucred ur_uc;
79 struct lvfs_grp_hash_entry *ur_grp_entry;
80 struct ldlm_request *ur_dlm;
83 /* file data for open files on MDS */
84 struct mds_file_data {
85 struct portals_handle mfd_handle; /* must be first */
86 atomic_t mfd_refcount;
87 struct list_head mfd_list; /* protected by med_open_lock */
90 struct dentry *mfd_dentry;
94 #ifdef CONFIG_FS_POSIX_ACL
95 # ifdef HAVE_XATTR_ACL
96 # define MDS_XATTR_NAME_ACL_ACCESS XATTR_NAME_ACL_ACCESS
97 # define mds_xattr_acl_size(entry) xattr_acl_size(entry)
98 # else /* HAVE_XATTR_ACL */
99 # define MDS_XATTR_NAME_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
100 # define mds_xattr_acl_size(entry) posix_acl_xattr_size(entry)
101 # endif /* HAVE_XATTR_ACL */
103 # define LUSTRE_POSIX_ACL_MAX_ENTRIES (32)
104 # define LUSTRE_POSIX_ACL_MAX_SIZE \
105 (mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES))
106 #else /* CONFIG_FS_POSIX_ACL */
107 # define LUSTRE_POSIX_ACL_MAX_SIZE 0
108 #endif /* CONFIG_FS_POSIX_ACL */
110 /* mds/mds_reint.c */
111 int mds_reint_rec(struct mds_update_record *r, int offset,
112 struct ptlrpc_request *req, struct lustre_handle *);
116 /* mdc/mdc_locks.c */
117 struct md_enqueue_info;
119 int it_disposition(struct lookup_intent *it, int flag);
120 void it_set_disposition(struct lookup_intent *it, int flag);
121 void it_clear_disposition(struct lookup_intent *it, int flag);
122 int it_open_error(int phase, struct lookup_intent *it);
123 void mdc_set_lock_data(__u64 *lockh, void *data);
124 int mdc_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
125 ldlm_iterator_t it, void *data);
126 int mdc_revalidate_lock(struct obd_export *exp,
127 struct lookup_intent *it,
129 int mdc_intent_lock(struct obd_export *exp,
130 struct mdc_op_data *,
131 void *lmm, int lmmsize,
132 struct lookup_intent *, int,
133 struct ptlrpc_request **reqp,
134 ldlm_blocking_callback cb_blocking, int extra_lock_flags);
135 int mdc_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
136 struct lookup_intent *it, struct mdc_op_data *data,
137 struct lustre_handle *lockh, void *lmm, int lmmlen,
138 int extra_lock_flags);
139 int mdc_intent_getattr_async(struct obd_export *exp,
140 struct md_enqueue_info *minfo,
141 struct ldlm_enqueue_info *einfo);
143 /* mdc/mdc_request.c */
144 int mdc_init_ea_size(struct obd_export *mdc_exp, struct obd_export *lov_exp);
145 int mdc_req2lustre_md(struct ptlrpc_request *req, int offset,
146 struct obd_export *exp, struct lustre_md *md);
147 void mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md);
148 int mdc_getstatus(struct obd_export *exp, struct ll_fid *rootfid);
149 int mdc_getattr(struct obd_export *exp, struct ll_fid *fid,
150 obd_valid valid, unsigned int ea_size,
151 struct ptlrpc_request **request);
152 int mdc_getattr_name(struct obd_export *exp, struct ll_fid *fid,
153 const char *filename, int namelen, unsigned long valid,
154 unsigned int ea_size, struct ptlrpc_request **request);
155 int mdc_setattr(struct obd_export *exp, struct mdc_op_data *data,
156 struct iattr *iattr, void *ea, int ealen, void *ea2, int ea2len,
157 struct ptlrpc_request **request);
158 int mdc_setxattr(struct obd_export *exp, struct ll_fid *fid,
159 obd_valid valid, const char *xattr_name,
160 const char *input, int input_size,
161 int output_size, int flags,
162 struct ptlrpc_request **request);
163 int mdc_getxattr(struct obd_export *exp, struct ll_fid *fid,
164 obd_valid valid, const char *xattr_name,
165 const char *input, int input_size,
166 int output_size, struct ptlrpc_request **request);
167 int mdc_open(struct obd_export *exp, obd_id ino, int type, int flags,
168 struct lov_mds_md *lmm, int lmm_size, struct lustre_handle *fh,
169 struct ptlrpc_request **);
170 struct obd_client_handle;
171 void mdc_set_open_replay_data(struct obd_client_handle *och,
172 struct ptlrpc_request *open_req);
173 void mdc_clear_open_replay_data(struct obd_client_handle *och);
174 int mdc_close(struct obd_export *, struct obdo *, struct obd_client_handle *,
175 struct ptlrpc_request **);
176 int mdc_readpage(struct obd_export *exp, struct ll_fid *mdc_fid, __u64 offset,
177 struct page *, struct ptlrpc_request **);
178 int mdc_create(struct obd_export *exp, struct mdc_op_data *op_data,
179 const void *data, int datalen, int mode, __u32 uid, __u32 gid,
180 __u32 cap_effective, __u64 rdev,struct ptlrpc_request **request);
181 int mdc_unlink(struct obd_export *exp, struct mdc_op_data *data,
182 struct ptlrpc_request **request);
183 int mdc_link(struct obd_export *exp, struct mdc_op_data *data,
184 struct ptlrpc_request **);
185 int mdc_rename(struct obd_export *exp, struct mdc_op_data *data,
186 const char *old, int oldlen, const char *new, int newlen,
187 struct ptlrpc_request **request);
188 int mdc_sync(struct obd_export *exp, struct ll_fid *fid,
189 struct ptlrpc_request **);
190 int mdc_create_client(struct obd_uuid uuid, struct ptlrpc_client *cl);
191 int mdc_resource_get_unused(struct obd_export *exp, struct ll_fid *fid,
192 struct list_head *cancels, ldlm_mode_t mode,
195 /* Store the generation of a newly-created inode in |req| for replay. */
196 void mdc_store_inode_generation(struct ptlrpc_request *req, int reqoff,
198 int mdc_llog_process(struct obd_export *, char *logname, llog_cb_t, void *data);
199 int mdc_done_writing(struct obd_export *exp, struct obdo *);
201 static inline void mdc_pack_fid(struct ll_fid *fid, obd_id ino, __u32 gen,
205 fid->generation = gen;
209 static inline int it_to_lock_mode(struct lookup_intent *it)
211 /* CREAT needs to be tested before open (both could be set) */
212 if (it->it_op & IT_CREAT)
214 else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP))
221 /* ioctls for trying requests */
222 #define IOC_REQUEST_TYPE 'f'
223 #define IOC_REQUEST_MIN_NR 30
225 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
226 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
227 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
228 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
229 #define IOC_REQUEST_OPEN _IOWR('f', 34, long)
230 #define IOC_REQUEST_CLOSE _IOWR('f', 35, long)
231 #define IOC_REQUEST_MAX_NR 35
233 /* metadata stat-ahead */
234 typedef int (* md_enqueue_cb_t)(struct obd_export *exp,
235 struct ptlrpc_request *req,
236 struct md_enqueue_info *minfo,
239 struct md_enqueue_info {
240 struct obd_export *mi_exp;
241 struct mdc_op_data mi_data;
242 struct lookup_intent mi_it;
243 struct lustre_handle mi_lockh;
244 struct dentry *mi_dentry;
245 md_enqueue_cb_t mi_cb;
249 struct mdc_enqueue_args {
250 struct md_enqueue_info *ma_mi;
251 struct ldlm_enqueue_info *ma_ei;