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;
47 #define MDS_STOPPING 1
50 #define LUSTRE_MDS_NAME "mds"
54 struct task_struct *mds_thread;
56 wait_queue_head_t mds_waitq;
57 wait_queue_head_t mds_done_waitq;
58 struct timer_list *mds_timer;
61 struct list_head mds_reqs;
62 struct super_block * mds_sb;
63 struct vfsmount *mds_vfsmnt;
64 struct mds_run_ctxt mds_ctxt;
67 struct file_operations *mds_fop;
68 struct inode_operations *mds_iop;
69 struct address_space_operations *mds_aops;
71 struct ptlrpc_service *mds_service;
75 struct mds_update_record {
78 struct ll_fid *ur_fid1;
79 struct ll_fid *ur_fid2;
84 struct iattr ur_iattr;
93 void *mds_req_tgt(struct mds_req *req);
94 int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct ptlreq_hdr **hdr, union ptl_req *req, int *len, char **buf);
95 int mds_unpack_req(char *buf, int len, struct ptlreq_hdr **hdr, union ptl_req *);
96 int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct ptlrep_hdr **hdr, union ptl_rep *rep, int *len, char **buf);
97 int mds_unpack_rep(char *buf, int len, struct ptlrep_hdr **hdr, union ptl_rep *rep);
100 int mds_reint_rec(struct mds_update_record *r, struct ptlrpc_request *req);
102 /* lib/mds_updates.c */
103 int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
105 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
106 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);
107 void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode, const char *name, int namelen);
108 void mds_link_pack(struct mds_rec_link *rec, struct inode *inode, struct inode *dir, const char *name, int namelen);
109 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);
112 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
114 /* llight/request.c */
115 int mdc_getattr(struct ptlrpc_client *peer, ino_t ino, int type, int valid,
116 struct mds_rep **mds_reply, struct ptlrep_hdr **hdr);
117 int mdc_setattr(struct ptlrpc_client *peer, struct inode *inode,
118 struct iattr *iattr, struct mds_rep **mds_reply,
119 struct ptlrep_hdr **hdr);
120 int mdc_readpage(struct ptlrpc_client *peer, ino_t ino, int type, __u64 offset,
121 char *addr, struct mds_rep **rep, struct ptlrep_hdr **hdr);
122 int mdc_create(struct ptlrpc_client *peer,
123 struct inode *dir, const char *name, int namelen,
124 const char *tgt, int tgtlen,
125 int mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
126 struct mds_rep **rep, struct ptlrep_hdr **hdr);
127 int mdc_unlink(struct ptlrpc_client *peer,
128 struct inode *dir, const char *name, int namelen,
129 struct mds_rep **rep, struct ptlrep_hdr **hdr);
130 int mdc_link(struct ptlrpc_client *peer, struct dentry *src,
131 struct inode *dir, const char *name, int namelen,
132 struct mds_rep **rep, struct ptlrep_hdr **hdr);
133 int mdc_rename(struct ptlrpc_client *peer, struct inode *src,
134 struct inode *tgt, const char *old, int oldlen,
135 const char *new, int newlen,
136 struct mds_rep **rep, struct ptlrep_hdr **hdr);
137 int mdc_create_client(char *uuid, struct ptlrpc_client *cl);
139 /* ioctls for trying requests */
140 #define IOC_REQUEST_TYPE 'f'
141 #define IOC_REQUEST_MIN_NR 30
143 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
144 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
145 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
146 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
147 #define IOC_REQUEST_MAX_NR 33