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>
38 void mds_pack_body(struct ptlrpc_request *req)
40 struct mds_body *b = lustre_msg_buf(req->rq_reqmsg, 0);
44 /* fid1/fid2 are already packed by another function */
45 b->objid = HTON__u64(b->objid);
46 b->size = HTON__u64(b->size);
47 b->valid = HTON__u32(b->valid);
48 b->mode = HTON__u32(b->mode);
49 b->uid = HTON__u32(b->uid);
50 b->gid = HTON__u32(b->gid);
51 b->mtime = HTON__u32(b->mtime);
52 b->ctime = HTON__u32(b->ctime);
53 b->atime = HTON__u32(b->atime);
54 b->flags = HTON__u32(b->flags);
55 b->major = HTON__u32(b->major);
56 b->minor = HTON__u32(b->minor);
57 b->ino = HTON__u32(b->ino);
58 b->nlink = HTON__u32(b->nlink);
59 b->generation = HTON__u32(b->generation);
62 /* packing of MDS records */
63 void mds_create_pack(struct mds_rec_create *rec, struct inode *inode,
64 __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time)
66 /* XXX do something about time, uid, gid */
67 rec->cr_opcode = HTON__u32(REINT_CREATE);
68 ll_inode2fid(&rec->cr_fid, inode);
69 rec->cr_mode = HTON__u32(mode);
70 rec->cr_id = HTON__u64(id);
71 rec->cr_uid = HTON__u32(uid);
72 rec->cr_gid = HTON__u32(gid);
73 rec->cr_time = HTON__u64(time);
76 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode,
79 rec->sa_opcode = HTON__u32(REINT_SETATTR);
80 ll_inode2fid(&rec->sa_fid, inode);
81 rec->sa_valid = HTON__u32(iattr->ia_valid);
82 rec->sa_mode = HTON__u32(iattr->ia_mode);
83 rec->sa_uid = HTON__u32(iattr->ia_uid);
84 rec->sa_gid = HTON__u32(iattr->ia_gid);
85 rec->sa_size = HTON__u64(iattr->ia_size);
86 rec->sa_atime = HTON__u64(iattr->ia_atime);
87 rec->sa_mtime = HTON__u64(iattr->ia_mtime);
88 rec->sa_ctime = HTON__u64(iattr->ia_ctime);
89 rec->sa_attr_flags = HTON__u32(iattr->ia_attr_flags);
92 void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode,
95 rec->ul_opcode = HTON__u32(REINT_UNLINK);
96 ll_inode2fid(&rec->ul_fid1, inode);
97 ll_inode2fid(&rec->ul_fid2, child);
100 void mds_link_pack(struct mds_rec_link *rec,
101 struct inode *inode, struct inode *dir)
103 rec->lk_opcode = HTON__u32(REINT_LINK);
104 ll_inode2fid(&rec->lk_fid1, inode);
105 ll_inode2fid(&rec->lk_fid2, dir);
108 void mds_rename_pack(struct mds_rec_rename *rec, struct inode *srcdir,
109 struct inode *tgtdir)
111 /* XXX do something about time, uid, gid */
112 rec->rn_opcode = HTON__u32(REINT_RENAME);
113 ll_inode2fid(&rec->rn_fid1, srcdir);
114 ll_inode2fid(&rec->rn_fid2, tgtdir);
118 void mds_unpack_body(struct ptlrpc_request *req)
120 struct mds_body *b = lustre_msg_buf(req->rq_repmsg, 0);
124 b->objid = NTOH__u64(b->objid);
125 b->size = NTOH__u64(b->size);
126 b->valid = NTOH__u32(b->valid);
127 b->mode = NTOH__u32(b->mode);
128 b->uid = NTOH__u32(b->uid);
129 b->gid = NTOH__u32(b->gid);
130 b->mtime = NTOH__u32(b->mtime);
131 b->ctime = NTOH__u32(b->ctime);
132 b->atime = NTOH__u32(b->atime);
133 b->flags = NTOH__u32(b->flags);
134 b->major = NTOH__u32(b->major);
135 b->minor = NTOH__u32(b->minor);
136 b->ino = NTOH__u32(b->ino);
137 b->nlink = NTOH__u32(b->nlink);
138 b->generation = NTOH__u32(b->generation);
141 static int mds_setattr_unpack(struct ptlrpc_request *req,
142 struct mds_update_record *r)
144 struct iattr *attr = &r->ur_iattr;
145 struct mds_rec_setattr *rec = lustre_msg_buf(req->rq_reqmsg, 0);
148 if (req->rq_reqmsg->bufcount != 1 ||
149 req->rq_reqmsg->buflens[0] != sizeof(*rec))
152 r->ur_fid1 = &rec->sa_fid;
153 attr->ia_valid = NTOH__u32(rec->sa_valid);
154 attr->ia_mode = NTOH__u32(rec->sa_mode);
155 attr->ia_uid = NTOH__u32(rec->sa_uid);
156 attr->ia_gid = NTOH__u32(rec->sa_gid);
157 attr->ia_size = NTOH__u64(rec->sa_size);
158 attr->ia_atime = NTOH__u64(rec->sa_atime);
159 attr->ia_mtime = NTOH__u64(rec->sa_mtime);
160 attr->ia_ctime = NTOH__u64(rec->sa_ctime);
161 attr->ia_attr_flags = NTOH__u32(rec->sa_attr_flags);
165 static int mds_create_unpack(struct ptlrpc_request *req,
166 struct mds_update_record *r)
168 struct mds_rec_create *rec = lustre_msg_buf(req->rq_reqmsg, 0);
171 if (req->rq_reqmsg->bufcount != 3 ||
172 req->rq_reqmsg->buflens[0] != sizeof(*rec))
175 r->ur_fid1 = &rec->cr_fid;
176 r->ur_mode = NTOH__u32(rec->cr_mode);
177 r->ur_id = NTOH__u64(rec->cr_id);
178 r->ur_uid = NTOH__u32(rec->cr_uid);
179 r->ur_gid = NTOH__u32(rec->cr_gid);
180 r->ur_time = NTOH__u64(rec->cr_time);
182 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
183 r->ur_namelen = req->rq_reqmsg->buflens[1];
185 r->ur_tgt = lustre_msg_buf(req->rq_reqmsg, 2);
186 r->ur_tgtlen = req->rq_reqmsg->buflens[2];
190 static int mds_link_unpack(struct ptlrpc_request *req,
191 struct mds_update_record *r)
193 struct mds_rec_link *rec = lustre_msg_buf(req->rq_reqmsg, 0);
196 if (req->rq_reqmsg->bufcount != 2 ||
197 req->rq_reqmsg->buflens[0] != sizeof(*rec))
200 r->ur_fid1 = &rec->lk_fid1;
201 r->ur_fid2 = &rec->lk_fid2;
203 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
204 r->ur_namelen = req->rq_reqmsg->buflens[1];
208 static int mds_unlink_unpack(struct ptlrpc_request *req,
209 struct mds_update_record *r)
211 struct mds_rec_unlink *rec = lustre_msg_buf(req->rq_reqmsg, 0);
214 if (req->rq_reqmsg->bufcount != 2 ||
215 req->rq_reqmsg->buflens[0] != sizeof(*rec))
218 r->ur_fid1 = &rec->ul_fid1;
219 r->ur_fid2 = &rec->ul_fid2;
221 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
222 r->ur_namelen = req->rq_reqmsg->buflens[1];
226 static int mds_rename_unpack(struct ptlrpc_request *req,
227 struct mds_update_record *r)
229 struct mds_rec_rename *rec = lustre_msg_buf(req->rq_reqmsg, 0);
232 if (req->rq_reqmsg->bufcount != 3 ||
233 req->rq_reqmsg->buflens[0] != sizeof(*rec))
236 r->ur_fid1 = &rec->rn_fid1;
237 r->ur_fid2 = &rec->rn_fid2;
239 r->ur_name = lustre_msg_buf(req->rq_reqmsg, 1);
240 r->ur_namelen = req->rq_reqmsg->buflens[1];
242 r->ur_tgt = lustre_msg_buf(req->rq_reqmsg, 2);
243 r->ur_tgtlen = req->rq_reqmsg->buflens[2];
247 typedef int (*update_unpacker)(struct ptlrpc_request *req,
248 struct mds_update_record *r);
250 static update_unpacker mds_unpackers[REINT_MAX + 1] = {
251 [REINT_SETATTR] mds_setattr_unpack,
252 [REINT_CREATE] mds_create_unpack,
253 [REINT_LINK] mds_link_unpack,
254 [REINT_UNLINK] mds_unlink_unpack,
255 [REINT_RENAME] mds_rename_unpack,
258 int mds_update_unpack(struct ptlrpc_request *req, struct mds_update_record *rec)
260 struct mds_update_record_hdr *hdr = lustre_msg_buf(req->rq_reqmsg, 0);
264 if (!hdr || req->rq_reqmsg->buflens[0] < sizeof(__u32))
267 rec->ur_opcode = NTOH__u32(hdr->ur_opcode);
269 if (rec->ur_opcode < 0 || rec->ur_opcode > REINT_MAX)
272 rc = mds_unpackers[rec->ur_opcode](req, rec);