1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Lustre Light Update Records
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
9 * Copryright (C) 2002 Cluster File Systems, Inc.
13 #include <linux/config.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
17 #include <linux/string.h>
18 #include <linux/stat.h>
19 #include <linux/errno.h>
20 #include <linux/locks.h>
21 #include <linux/unistd.h>
23 #include <asm/system.h>
24 #include <asm/uaccess.h>
27 #include <linux/stat.h>
28 #include <asm/uaccess.h>
29 #include <linux/slab.h>
30 #include <asm/segment.h>
32 #define DEBUG_SUBSYSTEM S_MDS
34 #include <linux/obd_support.h>
35 #include <linux/lustre_lib.h>
36 #include <linux/lustre_mds.h>
37 #include <linux/lustre_lite.h>
39 void mds_pack_fid(struct ll_fid *fid)
41 fid->id = HTON__u64(fid->id);
42 fid->generation = HTON__u32(fid->generation);
43 fid->f_type = HTON__u32(fid->f_type);
46 static void mds_pack_body(struct mds_body *b)
51 mds_pack_fid(&b->fid1);
52 mds_pack_fid(&b->fid2);
53 b->objid = HTON__u64(b->objid);
54 b->size = HTON__u64(b->size);
55 b->valid = HTON__u32(b->valid);
56 b->mode = HTON__u32(b->mode);
57 b->uid = HTON__u32(b->uid);
58 b->gid = HTON__u32(b->gid);
59 b->mtime = HTON__u32(b->mtime);
60 b->ctime = HTON__u32(b->ctime);
61 b->atime = HTON__u32(b->atime);
62 b->flags = HTON__u32(b->flags);
63 b->major = HTON__u32(b->major);
64 b->minor = HTON__u32(b->minor);
65 b->ino = HTON__u32(b->ino);
66 b->nlink = HTON__u32(b->nlink);
67 b->generation = HTON__u32(b->generation);
68 b->last_xid = HTON__u32(b->last_xid);
71 void mds_pack_req_body(struct ptlrpc_request *req)
73 struct mds_body *b = lustre_msg_buf(req->rq_reqmsg, 0);
77 void mds_pack_rep_body(struct ptlrpc_request *req)
79 struct mds_body *b = lustre_msg_buf(req->rq_repmsg, 0);
84 /* packing of MDS records */
85 void mds_create_pack(struct mds_rec_create *rec, struct inode *inode,
86 __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time)
88 /* XXX do something about time, uid, gid */
89 rec->cr_opcode = HTON__u32(REINT_CREATE);
90 ll_inode2fid(&rec->cr_fid, inode);
91 rec->cr_mode = HTON__u32(mode);
92 rec->cr_id = HTON__u64(id);
93 rec->cr_uid = HTON__u32(uid);
94 rec->cr_gid = HTON__u32(gid);
95 rec->cr_time = HTON__u64(time);
98 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode,
101 rec->sa_opcode = HTON__u32(REINT_SETATTR);
102 ll_inode2fid(&rec->sa_fid, inode);
103 rec->sa_valid = HTON__u32(iattr->ia_valid);
104 rec->sa_mode = HTON__u32(iattr->ia_mode);
105 rec->sa_uid = HTON__u32(iattr->ia_uid);
106 rec->sa_gid = HTON__u32(iattr->ia_gid);
107 rec->sa_size = HTON__u64(iattr->ia_size);
108 rec->sa_atime = HTON__u64(iattr->ia_atime);
109 rec->sa_mtime = HTON__u64(iattr->ia_mtime);
110 rec->sa_ctime = HTON__u64(iattr->ia_ctime);
111 rec->sa_attr_flags = HTON__u32(iattr->ia_attr_flags);
114 void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode,
117 rec->ul_opcode = HTON__u32(REINT_UNLINK);
118 ll_inode2fid(&rec->ul_fid1, inode);
119 ll_inode2fid(&rec->ul_fid2, child);
122 void mds_link_pack(struct mds_rec_link *rec,
123 struct inode *inode, struct inode *dir)
125 rec->lk_opcode = HTON__u32(REINT_LINK);
126 ll_inode2fid(&rec->lk_fid1, inode);
127 ll_inode2fid(&rec->lk_fid2, dir);
130 void mds_rename_pack(struct mds_rec_rename *rec, struct inode *srcdir,
131 struct inode *tgtdir)
133 /* XXX do something about time, uid, gid */
134 rec->rn_opcode = HTON__u32(REINT_RENAME);
135 ll_inode2fid(&rec->rn_fid1, srcdir);
136 ll_inode2fid(&rec->rn_fid2, tgtdir);
140 void mds_unpack_fid(struct ll_fid *fid)
142 fid->id = NTOH__u64(fid->id);
143 fid->generation = NTOH__u32(fid->generation);
144 fid->f_type = NTOH__u32(fid->f_type);
147 static void mds_unpack_body(struct mds_body *b)
152 mds_unpack_fid(&b->fid1);
153 mds_unpack_fid(&b->fid2);
154 b->objid = NTOH__u64(b->objid);
155 b->size = NTOH__u64(b->size);
156 b->valid = NTOH__u32(b->valid);
157 b->mode = NTOH__u32(b->mode);
158 b->uid = NTOH__u32(b->uid);
159 b->gid = NTOH__u32(b->gid);
160 b->mtime = NTOH__u32(b->mtime);
161 b->ctime = NTOH__u32(b->ctime);
162 b->atime = NTOH__u32(b->atime);
163 b->flags = NTOH__u32(b->flags);
164 b->major = NTOH__u32(b->major);
165 b->minor = NTOH__u32(b->minor);
166 b->ino = NTOH__u32(b->ino);
167 b->nlink = NTOH__u32(b->nlink);
168 b->generation = NTOH__u32(b->generation);
169 b->last_xid = NTOH__u32(b->last_xid);
173 void mds_unpack_req_body(struct ptlrpc_request *req)
175 struct mds_body *b = lustre_msg_buf(req->rq_reqmsg, 0);
179 void mds_unpack_rep_body(struct ptlrpc_request *req)
181 struct mds_body *b = lustre_msg_buf(req->rq_repmsg, 0);
185 static int mds_setattr_unpack(struct ptlrpc_request *req,
186 struct mds_update_record *r)
188 struct iattr *attr = &r->ur_iattr;
189 struct mds_rec_setattr *rec = lustre_msg_buf(req->rq_reqmsg, 0);
192 if (req->rq_reqmsg->bufcount != 1 ||
193 req->rq_reqmsg->buflens[0] != sizeof(*rec))
196 r->ur_fid1 = &rec->sa_fid;
197 attr->ia_valid = NTOH__u32(rec->sa_valid);
198 attr->ia_mode = NTOH__u32(rec->sa_mode);
199 attr->ia_uid = NTOH__u32(rec->sa_uid);
200 attr->ia_gid = NTOH__u32(rec->sa_gid);
201 attr->ia_size = NTOH__u64(rec->sa_size);
202 attr->ia_atime = NTOH__u64(rec->sa_atime);
203 attr->ia_mtime = NTOH__u64(rec->sa_mtime);
204 attr->ia_ctime = NTOH__u64(rec->sa_ctime);
205 attr->ia_attr_flags = NTOH__u32(rec->sa_attr_flags);
209 static int mds_create_unpack(struct ptlrpc_request *req,
210 struct mds_update_record *r)
212 struct mds_rec_create *rec = lustre_msg_buf(req->rq_reqmsg, 0);
215 if (req->rq_reqmsg->bufcount != 3 ||
216 req->rq_reqmsg->buflens[0] != sizeof(*rec))
219 r->ur_fid1 = &rec->cr_fid;
220 r->ur_mode = NTOH__u32(rec->cr_mode);
221 r->ur_id = NTOH__u64(rec->cr_id);
222 r->ur_uid = NTOH__u32(rec->cr_uid);
223 r->ur_gid = NTOH__u32(rec->cr_gid);
224 r->ur_time = NTOH__u64(rec->cr_time);
226 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
227 r->ur_namelen = req->rq_reqmsg->buflens[1];
229 r->ur_tgt = lustre_msg_buf(req->rq_reqmsg, 2);
230 r->ur_tgtlen = req->rq_reqmsg->buflens[2];
234 static int mds_link_unpack(struct ptlrpc_request *req,
235 struct mds_update_record *r)
237 struct mds_rec_link *rec = lustre_msg_buf(req->rq_reqmsg, 0);
240 if (req->rq_reqmsg->bufcount != 2 ||
241 req->rq_reqmsg->buflens[0] != sizeof(*rec))
244 r->ur_fid1 = &rec->lk_fid1;
245 r->ur_fid2 = &rec->lk_fid2;
247 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
248 r->ur_namelen = req->rq_reqmsg->buflens[1];
252 static int mds_unlink_unpack(struct ptlrpc_request *req,
253 struct mds_update_record *r)
255 struct mds_rec_unlink *rec = lustre_msg_buf(req->rq_reqmsg, 0);
258 if (req->rq_reqmsg->bufcount != 2 ||
259 req->rq_reqmsg->buflens[0] != sizeof(*rec))
262 r->ur_fid1 = &rec->ul_fid1;
263 r->ur_fid2 = &rec->ul_fid2;
265 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
266 r->ur_namelen = req->rq_reqmsg->buflens[1];
270 static int mds_rename_unpack(struct ptlrpc_request *req,
271 struct mds_update_record *r)
273 struct mds_rec_rename *rec = lustre_msg_buf(req->rq_reqmsg, 0);
276 if (req->rq_reqmsg->bufcount != 3 ||
277 req->rq_reqmsg->buflens[0] != sizeof(*rec))
280 r->ur_fid1 = &rec->rn_fid1;
281 r->ur_fid2 = &rec->rn_fid2;
283 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
284 r->ur_namelen = req->rq_reqmsg->buflens[1];
286 r->ur_tgt = lustre_msg_buf(req->rq_reqmsg, 2);
287 r->ur_tgtlen = req->rq_reqmsg->buflens[2];
291 typedef int (*update_unpacker)(struct ptlrpc_request *req,
292 struct mds_update_record *r);
294 static update_unpacker mds_unpackers[REINT_MAX + 1] = {
295 [REINT_SETATTR] mds_setattr_unpack,
296 [REINT_CREATE] mds_create_unpack,
297 [REINT_LINK] mds_link_unpack,
298 [REINT_UNLINK] mds_unlink_unpack,
299 [REINT_RENAME] mds_rename_unpack,
300 [REINT_RECREATE] mds_create_unpack,
303 int mds_update_unpack(struct ptlrpc_request *req, struct mds_update_record *rec)
305 struct mds_update_record_hdr *hdr = lustre_msg_buf(req->rq_reqmsg, 0);
309 if (!hdr || req->rq_reqmsg->buflens[0] < sizeof(__u32))
312 rec->ur_opcode = NTOH__u32(hdr->ur_opcode);
314 if (rec->ur_opcode < 0 || rec->ur_opcode > REINT_MAX)
317 rc = mds_unpackers[rec->ur_opcode](req, rec);