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_class.h>
30 #include <linux/lustre_idl.h>
31 #include <linux/lustre_net.h>
33 static inline void l_dput(struct dentry *de)
35 if (!de || IS_ERR(de))
40 #define LUSTRE_MDS_NAME "mds"
42 struct mds_update_record {
45 struct ll_fid *ur_fid1;
46 struct ll_fid *ur_fid2;
51 struct iattr ur_iattr;
60 void *mds_req_tgt(struct mds_req *req);
61 int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct ptlreq_hdr **hdr, union ptl_req *req, int *len, char **buf);
62 int mds_unpack_req(char *buf, int len, struct ptlreq_hdr **hdr, union ptl_req *);
63 int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct ptlrep_hdr **hdr, union ptl_rep *rep, int *len, char **buf);
64 int mds_unpack_rep(char *buf, int len, struct ptlrep_hdr **hdr, union ptl_rep *rep);
67 int mds_reint_rec(struct mds_update_record *r, struct ptlrpc_request *req);
69 /* lib/mds_updates.c */
70 int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
72 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
73 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);
74 void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode, struct inode *child, const char *name, int namelen);
75 void mds_link_pack(struct mds_rec_link *rec, struct inode *inode, struct inode *dir, const char *name, int namelen);
76 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);
79 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
81 /* llight/request.c */
82 int mdc_getattr(struct ptlrpc_client *peer, ino_t ino, int type, int valid,
83 struct ptlrpc_request **);
84 int mdc_setattr(struct ptlrpc_client *peer, struct inode *inode,
85 struct iattr *iattr, struct ptlrpc_request **);
86 int mdc_open(struct ptlrpc_client *cl, ino_t ino, int type, int flags,
87 __u64 *fh, struct ptlrpc_request **req);
88 int mdc_close(struct ptlrpc_client *cl, ino_t ino, int type, __u64 fh,
89 struct ptlrpc_request **req);
90 int mdc_readpage(struct ptlrpc_client *peer, ino_t ino, int type, __u64 offset,
91 char *addr, struct ptlrpc_request **);
92 int mdc_create(struct ptlrpc_client *peer,
93 struct inode *dir, const char *name, int namelen,
94 const char *tgt, int tgtlen,
95 int mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
96 struct ptlrpc_request **);
97 int mdc_unlink(struct ptlrpc_client *peer, struct inode *dir,
98 struct inode *child, const char *name, int namelen,
99 struct ptlrpc_request **);
100 int mdc_link(struct ptlrpc_client *peer, struct dentry *src,
101 struct inode *dir, const char *name, int namelen,
102 struct ptlrpc_request **);
103 int mdc_rename(struct ptlrpc_client *peer, struct inode *src,
104 struct inode *tgt, const char *old, int oldlen,
105 const char *new, int newlen,
106 struct ptlrpc_request **);
107 int mdc_create_client(char *uuid, struct ptlrpc_client *cl);
109 struct mds_fs_operations {
110 void *(* fs_start)(struct inode *inode, int op);
111 int (* fs_commit)(struct inode *inode, void *handle);
112 int (* fs_setattr)(struct inode *inode, void *handle,
113 struct iattr *iattr);
114 int (* fs_set_objid)(struct inode *inode, void *handle, obd_id id);
115 void (* fs_get_objid)(struct inode *inode, obd_id *id);
116 ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
118 void (* fs_delete_inode)(struct inode *inode);
119 void (* cl_delete_inode)(struct inode *inode);
122 #define MDS_FSOP_UNLINK 1
123 #define MDS_FSOP_RMDIR 2
125 static inline void *mds_fs_start(struct mds_obd *mds, struct inode *inode,
128 return mds->mds_fsops->fs_start(inode, op);
131 static inline int mds_fs_commit(struct mds_obd *mds, struct inode *inode,
134 return mds->mds_fsops->fs_commit(inode, handle);
137 static inline int mds_fs_setattr(struct mds_obd *mds, struct inode *inode,
138 void *handle, struct iattr *iattr)
140 return mds->mds_fsops->fs_setattr(inode, handle, iattr);
143 static inline int mds_fs_set_objid(struct mds_obd *mds, struct inode *inode,
144 void *handle, __u64 id)
146 return mds->mds_fsops->fs_set_objid(inode, handle, id);
149 static inline void mds_fs_get_objid(struct mds_obd *mds, struct inode *inode,
152 mds->mds_fsops->fs_get_objid(inode, id);
155 static inline ssize_t mds_fs_readpage(struct mds_obd *mds, struct file *file,
156 char *buf, size_t count, loff_t *offset)
158 return mds->mds_fsops->fs_readpage(file, buf, count, offset);
161 extern struct mds_fs_operations mds_ext2_fs_ops;
162 extern struct mds_fs_operations mds_ext3_fs_ops;
164 /* ioctls for trying requests */
165 #define IOC_REQUEST_TYPE 'f'
166 #define IOC_REQUEST_MIN_NR 30
168 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
169 #define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
170 #define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
171 #define IOC_REQUEST_CREATE _IOWR('f', 33, long)
172 #define IOC_REQUEST_MAX_NR 33