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>
34 static inline void l_dput(struct dentry *de)
36 if (!de || IS_ERR(de))
42 struct vfsmount *pwdmnt;
48 #define LUSTRE_MDS_NAME "mds"
52 struct task_struct *mds_thread;
54 wait_queue_head_t mds_waitq;
55 wait_queue_head_t mds_done_waitq;
56 struct timer_list *mds_timer;
59 struct list_head mds_reqs;
60 struct super_block * mds_sb;
61 struct vfsmount *mds_vfsmnt;
62 struct mds_run_ctxt mds_ctxt;
65 struct file_operations *mds_fop;
66 struct inode_operations *mds_iop;
67 struct address_space_operations *mds_aops;
69 struct ptlrpc_service *mds_service;
73 struct mds_update_record {
76 struct ll_fid *ur_fid1;
77 struct ll_fid *ur_fid2;
82 struct iattr ur_iattr;
91 void *mds_req_tgt(struct mds_req *req);
92 int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct ptlreq_hdr **hdr, struct mds_req **req, int *len, char **buf);
93 int mds_unpack_req(char *buf, int len, struct ptlreq_hdr **hdr, struct mds_req **req);
94 int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct ptlrep_hdr **hdr, struct mds_rep **rep, int *len, char **buf);
95 int mds_unpack_rep(char *buf, int len, struct ptlrep_hdr **hdr, struct mds_rep **rep);
98 int mds_reint_rec(struct mds_update_record *r, struct ptlrpc_request *req);
100 /* lib/mds_updates.c */
101 int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
103 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
104 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, const char *tgt, int tgtlen);
105 void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode, const char *name, int namelen);
106 void mds_link_pack(struct mds_rec_link *rec, struct inode *inode, struct inode *dir, const char *name, int namelen);
107 void mds_rename_pack(struct mds_rec_rename *rec, struct inode *srcdir, struct inode *tgtdir, const char *name, int namelen, const char *tgt, int tgtlen);
110 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
112 /* llight/request.c */
113 int mdc_getattr(struct lustre_peer *peer, ino_t ino, int type, int valid,
114 struct mds_rep **mds_reply, struct ptlrep_hdr **hdr);
115 int mdc_setattr(struct lustre_peer *peer, struct inode *inode,
116 struct iattr *iattr, struct mds_rep **mds_reply,
117 struct ptlrep_hdr **hdr);
118 int mdc_readpage(struct lustre_peer *peer, ino_t ino, int type, __u64 offset,
119 char *addr, struct mds_rep **rep, struct ptlrep_hdr **hdr);
120 int mdc_create(struct lustre_peer *peer,
121 struct inode *dir, const char *name, int namelen,
122 const char *tgt, int tgtlen,
123 int mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
124 struct mds_rep **rep, struct ptlrep_hdr **hdr);
125 int mdc_unlink(struct lustre_peer *peer,
126 struct inode *dir, const char *name, int namelen,
127 struct mds_rep **rep, struct ptlrep_hdr **hdr);
128 int mdc_link(struct lustre_peer *peer, struct dentry *src,
129 struct inode *dir, const char *name, int namelen,
130 struct mds_rep **rep, struct ptlrep_hdr **hdr);
131 int mdc_rename(struct lustre_peer *peer, struct inode *src,
132 struct inode *tgt, const char *old, int oldlen,
133 const char *new, int newlen,
134 struct mds_rep **rep, struct ptlrep_hdr **hdr);
136 /* ioctls for trying requests */
137 #define IOC_REQUEST_TYPE 'f'
138 #define IOC_REQUEST_MIN_NR 30
140 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
141 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
142 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
143 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
144 #define IOC_REQUEST_MAX_NR 33