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. <braam@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.
29 #include <linux/obd_support.h>
33 struct vfsmount *pwdmnt;
39 #define LUSTRE_MDS_NAME "mds"
43 struct task_struct *mds_thread;
44 wait_queue_head_t mds_waitq;
45 wait_queue_head_t mds_done_waitq;
46 struct timer_list *mds_timer;
49 struct list_head mds_reqs;
50 struct super_block * mds_sb;
51 struct vfsmount *mds_vfsmnt;
52 struct mds_run_ctxt mds_ctxt;
55 struct file_operations *mds_fop;
56 struct inode_operations *mds_iop;
57 struct address_space_operations *mds_aops;
62 struct list_head rq_list;
63 struct mds_obd *rq_obd;
68 struct mds_req_hdr *rq_reqhdr;
69 struct mds_req *rq_req;
73 struct mds_rep_hdr *rq_rephdr;
74 struct mds_rep *rq_rep;
76 void * rq_reply_handle;
77 wait_queue_head_t rq_wait_for_rep;
81 /* more or less identical to the packed structure, except for the pointers */
105 /* more or less identical to the packed structure, except for the pointers */
128 struct mds_update_record {
131 struct ll_fid *ur_fid1;
132 struct ll_fid *ur_fid2;
137 struct iattr ur_iattr;
146 void *mds_req_tgt(struct mds_req *req);
147 int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct mds_req_hdr **hdr, struct mds_req **req, int *len, char **buf);
148 int mds_unpack_req(char *buf, int len, struct mds_req_hdr **hdr, struct mds_req **req);
149 int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct mds_rep_hdr **hdr, struct mds_rep **rep, int *len, char **buf);
150 int mds_unpack_rep(char *buf, int len, struct mds_rep_hdr **hdr, struct mds_rep **rep);
152 /* mds/mds_reint.c */
153 int mds_reint_rec(struct mds_update_record *r, struct mds_request *req);
155 /* lib/mds_updates.c */
156 int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
158 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
159 void mds_create_pack(struct mds_rec_create *rec, struct inode *inode, const char *name, int namelen, __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time);
162 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
164 /* llight/request.c */
165 int mdc_getattr(ino_t ino, int type, int valid,
166 struct mds_rep **mds_reply, struct mds_rep_hdr **hdr);
167 int mdc_setattr(struct inode *inode, struct iattr *iattr,
168 struct mds_rep **mds_reply, struct mds_rep_hdr **hdr);
169 int mdc_readpage(ino_t ino, int type, __u64 offset, char *addr,
170 struct mds_rep **rep, struct mds_rep_hdr **hdr);
171 int mdc_create(struct inode *dir, const char *name,
172 int namelen, int mode, __u64 id, __u32 uid,
173 __u32 gid, __u64 time,
174 struct mds_rep **rep, struct mds_rep_hdr **hdr);
176 /* ioctls for trying requests */
177 #define IOC_REQUEST_TYPE 'f'
178 #define IOC_REQUEST_MIN_NR 30
180 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
181 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
182 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
183 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
184 #define IOC_REQUEST_MAX_NR 33