1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * MDS data structures.
22 * See also lustre_idl.h for wire formats of requests.
32 #include <linux/lustre_idl.h>
34 struct ldlm_lock_desc;
37 struct ptlrpc_connection;
40 struct ptlrpc_request;
43 #define LUSTRE_MDS_NAME "mds"
44 #define LUSTRE_MDC_NAME "mdc"
46 struct mds_update_record {
50 struct ll_fid *ur_fid1;
51 struct ll_fid *ur_fid2;
56 struct iattr ur_iattr;
64 #define MDS_LR_CLIENT 8192
65 #define MDS_LR_SIZE 128
67 #define MDS_CLIENT_SLOTS 17
69 #define MDS_MOUNT_RECOV 2
71 /* Data stored per server at the head of the last_rcvd file. In le32 order. */
72 struct mds_server_data {
73 __u8 msd_uuid[37]; /* server UUID */
74 __u8 uuid_padding[3]; /* unused */
75 __u64 msd_last_rcvd; /* last completed transaction ID */
76 __u64 msd_mount_count; /* MDS incarnation number */
77 __u8 padding[512 - 56];
80 /* Data stored per client in the last_rcvd file. In le32 order. */
81 struct mds_client_data {
82 __u8 mcd_uuid[37]; /* client UUID */
83 __u8 uuid_padding[3]; /* unused */
84 __u64 mcd_last_rcvd; /* last completed transaction ID */
85 __u64 mcd_mount_count; /* MDS incarnation number */
86 __u64 mcd_last_xid; /* client RPC xid for the last transaction */
87 __u8 padding[MDS_LR_SIZE - 64];
90 /* In-memory access to client data from MDS struct */
91 struct mds_export_data {
92 struct list_head med_open_head;
93 struct mds_client_data *med_mcd;
97 /* file data for open files on MDS */
98 struct mds_file_data {
99 struct list_head mfd_list;
100 struct file *mfd_file;
102 __u32 mfd_clientcookie;
105 /* mds/mds_reint.c */
106 int mds_reint_rec(struct mds_update_record *r, int offset,
107 struct ptlrpc_request *req);
109 /* lib/mds_updates.c */
110 void mds_unpack_body(struct mds_body *b);
111 void mds_unpack_fid(struct ll_fid *fid);
112 void mds_pack_fid(struct ll_fid *fid);
113 void mds_pack_req_body(struct ptlrpc_request *);
114 void mds_pack_rep_body(struct ptlrpc_request *);
115 int mds_update_unpack(struct ptlrpc_request *, int offset,
116 struct mds_update_record *);
118 void mds_getattr_pack(struct ptlrpc_request *req, int offset,
119 struct inode *inode, const char *name, int namelen);
120 void mds_setattr_pack(struct ptlrpc_request *, int offset, struct inode *,
121 struct iattr *, const char *name, int namelen);
122 void mds_create_pack(struct ptlrpc_request *, int offset, struct inode *,
123 __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
124 const char *name, int namelen, const char *tgt,
126 void mds_unlink_pack(struct ptlrpc_request *, int offset, struct inode *inode,
127 struct inode *child, __u32 mode, const char *name,
129 void mds_link_pack(struct ptlrpc_request *, int offset, struct inode *ino,
130 struct inode *dir, const char *name, int namelen);
131 void mds_rename_pack(struct ptlrpc_request *, int offset, struct inode *srcdir,
132 struct inode *tgtdir, const char *name, int namelen,
133 const char *tgt, int tgtlen);
134 void mds_pack_inode2fid(struct ll_fid *fid, struct inode *inode);
135 void mds_pack_inode2body(struct mds_body *body, struct inode *inode);
138 struct dentry *mds_name2locked_dentry(struct obd_device *, struct dentry *dir,
139 struct vfsmount **mnt, char *name,
140 int namelen, int lock_mode,
141 struct lustre_handle *lockh,
143 struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid,
144 struct vfsmount **mnt, int lock_mode,
145 struct lustre_handle *lockh);
146 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid,
147 struct vfsmount **mnt);
148 int mds_reint(int offset, struct ptlrpc_request *req);
150 /* mdc/mdc_request.c */
151 int mdc_enqueue(struct lustre_handle *conn, int lock_type,
152 struct lookup_intent *it, int lock_mode, struct inode *dir,
153 struct dentry *de, struct lustre_handle *lockh, char *tgt,
154 int tgtlen, void *data, int datalen);
155 int mdc_getlovinfo(struct obd_device *obd, struct lustre_handle *mdc_connh,
156 struct ptlrpc_request **request);
157 int mdc_getstatus(struct lustre_handle *conn,
158 struct ll_fid *rootfid, __u64 *last_committed,
159 __u64 *last_xid, struct ptlrpc_request **);
160 int mdc_getattr(struct lustre_handle *conn,
161 obd_id ino, int type, unsigned long valid, size_t ea_size,
162 struct ptlrpc_request **request);
163 int mdc_statfs(struct lustre_handle *conn, struct obd_statfs *osfs,
164 struct ptlrpc_request **request);
165 int mdc_setattr(struct lustre_handle *conn,
166 struct inode *, struct iattr *iattr, struct ptlrpc_request **);
167 int mdc_open(struct lustre_handle *conn, obd_id ino, int type, int flags,
168 struct lov_stripe_md *, __u64 cookie, __u64 *fh,
169 struct ptlrpc_request **);
170 int mdc_close(struct lustre_handle *conn,
171 obd_id ino, int type, __u64 fh, struct ptlrpc_request **req);
172 int mdc_readpage(struct lustre_handle *conn, obd_id ino,
173 int type, __u64 offset, char *addr, struct ptlrpc_request **);
174 int mdc_create(struct lustre_handle *conn,
175 struct inode *dir, const char *name, int namelen,
176 const char *tgt, int tgtlen, int mode, __u32 uid, __u32 gid,
177 __u64 time, __u64 rdev, struct lov_stripe_md *md,
178 struct ptlrpc_request **);
179 int mdc_unlink(struct lustre_handle *, struct inode *dir, struct inode *child,
180 __u32 mode, const char *name, int namelen,
181 struct ptlrpc_request **);
182 int mdc_link(struct lustre_handle *conn,
183 struct dentry *src, struct inode *dir, const char *name,
184 int namelen, struct ptlrpc_request **);
185 int mdc_rename(struct lustre_handle *conn,
186 struct inode *src, struct inode *tgt, const char *old,
187 int oldlen, const char *new, int newlen,
188 struct ptlrpc_request **);
189 int mdc_create_client(obd_uuid_t uuid, struct ptlrpc_client *cl);
191 extern int mds_client_add(struct mds_export_data *med, int cl_off);
192 extern int mds_client_free(struct obd_export *exp);
195 struct mds_fs_operations {
196 struct module *fs_owner;
197 void *(* fs_start)(struct inode *inode, int op);
198 int (* fs_commit)(struct inode *inode, void *handle);
199 int (* fs_setattr)(struct dentry *dentry, void *handle,
200 struct iattr *iattr);
201 int (* fs_set_md)(struct inode *inode, void *handle,
202 struct lov_mds_md *md);
203 int (* fs_get_md)(struct inode *inode,
204 struct lov_mds_md *md);
205 ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
207 void (* fs_delete_inode)(struct inode *inode);
208 void (* cl_delete_inode)(struct inode *inode);
209 int (* fs_journal_data)(struct file *file);
210 int (* fs_set_last_rcvd)(struct mds_obd *mds, void *handle);
211 int (* fs_statfs)(struct super_block *sb, struct statfs *sfs);
214 extern int mds_register_fs_type(struct mds_fs_operations *op, const char *name);
215 extern void mds_unregister_fs_type(const char *name);
216 extern int mds_fs_setup(struct obd_device *obddev, struct vfsmount *mnt);
217 extern void mds_fs_cleanup(struct obd_device *obddev);
219 #define MDS_FSOP_UNLINK 1
220 #define MDS_FSOP_RMDIR 2
221 #define MDS_FSOP_RENAME 3
222 #define MDS_FSOP_CREATE 4
223 #define MDS_FSOP_MKDIR 5
224 #define MDS_FSOP_SYMLINK 6
225 #define MDS_FSOP_MKNOD 7
226 #define MDS_FSOP_SETATTR 8
227 #define MDS_FSOP_LINK 9
229 #endif /* __KERNEL__ */
231 /* ioctls for trying requests */
232 #define IOC_REQUEST_TYPE 'f'
233 #define IOC_REQUEST_MIN_NR 30
235 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
236 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
237 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
238 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
239 #define IOC_REQUEST_OPEN _IOWR('f', 34, long)
240 #define IOC_REQUEST_CLOSE _IOWR('f', 35, long)
241 #define IOC_REQUEST_MAX_NR 35