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 */
104 /* more or less identical to the packed structure, except for the pointers */
128 void *mds_req_tgt(struct mds_req *req);
129 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);
130 int mds_unpack_req(char *buf, int len, struct mds_req_hdr **hdr, struct mds_req **req);
131 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);
132 int mds_unpack_rep(char *buf, int len, struct mds_rep_hdr **hdr, struct mds_rep **rep);
134 /* mds/mds_reint.c */
135 int mds_reint_setattr(struct mds_request *req);
137 /* lib/mds_updates.c */
138 void mds_setattr_unpack(struct mds_rec_setattr *rec, struct iattr *attr);
139 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
142 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
145 /* llight/request.c */
146 int mdc_getattr(ino_t ino, int type, int valid,
147 struct mds_rep **mds_reply, struct mds_rep_hdr **hdr);
148 int mdc_setattr(struct inode *inode, struct iattr *iattr,
149 struct mds_rep **mds_reply, struct mds_rep_hdr **hdr);
150 int mdc_readpage(ino_t ino, int type, __u64 offset, char *addr,
151 struct mds_rep **rep, struct mds_rep_hdr **hdr);
155 /* ioctls for trying requests */
156 #define IOC_REQUEST_TYPE 'f'
157 #define IOC_REQUEST_MIN_NR 30
159 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
160 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
161 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
162 #define IOC_REQUEST_MAX_NR 32