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.
30 #include <linux/obd_support.h>
31 #include <linux/lustre_idl.h>
32 #include <linux/lustre_net.h>
35 struct vfsmount *pwdmnt;
41 #define LUSTRE_MDS_NAME "mds"
45 struct task_struct *mds_thread;
47 wait_queue_head_t mds_waitq;
48 wait_queue_head_t mds_done_waitq;
49 struct timer_list *mds_timer;
52 struct list_head mds_reqs;
53 struct super_block * mds_sb;
54 struct vfsmount *mds_vfsmnt;
55 struct mds_run_ctxt mds_ctxt;
58 struct file_operations *mds_fop;
59 struct inode_operations *mds_iop;
60 struct address_space_operations *mds_aops;
64 struct mds_update_record {
67 struct ll_fid *ur_fid1;
68 struct ll_fid *ur_fid2;
73 struct iattr ur_iattr;
82 void *mds_req_tgt(struct mds_req *req);
83 int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct ptlreq_hdr **hdr, struct mds_req **req, int *len, char **buf);
84 int mds_unpack_req(char *buf, int len, struct ptlreq_hdr **hdr, struct mds_req **req);
85 int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct ptlrep_hdr **hdr, struct mds_rep **rep, int *len, char **buf);
86 int mds_unpack_rep(char *buf, int len, struct ptlrep_hdr **hdr, struct mds_rep **rep);
89 int mds_reint_rec(struct mds_update_record *r, struct ptlrpc_request *req);
91 /* lib/mds_updates.c */
92 int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
94 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
95 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);
98 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
100 /* llight/request.c */
101 int mdc_getattr(struct lustre_peer *peer, ino_t ino, int type, int valid,
102 struct mds_rep **mds_reply, struct ptlrep_hdr **hdr);
103 int mdc_setattr(struct lustre_peer *peer, struct inode *inode,
104 struct iattr *iattr, struct mds_rep **mds_reply,
105 struct ptlrep_hdr **hdr);
106 int mdc_readpage(struct lustre_peer *peer, ino_t ino, int type, __u64 offset,
107 char *addr, struct mds_rep **rep, struct ptlrep_hdr **hdr);
108 int mdc_create(struct lustre_peer *peer, struct inode *dir, const char *name,
109 int namelen, int mode, __u64 id, __u32 uid,
110 __u32 gid, __u64 time,
111 struct mds_rep **rep, struct ptlrep_hdr **hdr);
113 /* ioctls for trying requests */
114 #define IOC_REQUEST_TYPE 'f'
115 #define IOC_REQUEST_MIN_NR 30
117 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
118 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
119 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
120 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
121 #define IOC_REQUEST_MAX_NR 33