1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.sf.net/projects/lustre/
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.
25 #include <linux/config.h>
26 #include <linux/module.h>
27 #include <linux/kernel.h>
29 #define DEBUG_SUBSYSTEM S_MDC
31 #include <linux/obd_class.h>
32 #include <linux/lustre_mds.h>
34 static int mdc_reint(struct ptlrpc_request *request, int level)
37 request->rq_level = level;
39 rc = ptlrpc_queue_wait(request);
40 rc = ptlrpc_check_status(request, rc);
43 CERROR("error in handling %d\n", rc);
48 int mdc_setattr(struct lustre_handle *conn,
49 struct inode *inode, struct iattr *iattr,
50 struct ptlrpc_request **request)
52 struct ptlrpc_client *cl;
53 struct ptlrpc_connection *connection;
54 struct lustre_handle *rconn;
55 struct mds_rec_setattr *rec;
56 struct ptlrpc_request *req;
57 int rc, size = sizeof(*rec);
60 mdc_con2cl(conn, &cl, &connection, &rconn);
61 req = ptlrpc_prep_req2(cl, connection, rconn,
62 MDS_REINT, 1, &size, NULL);
66 mds_setattr_pack(req, 0, inode, iattr, NULL, 0);
68 size = sizeof(struct mds_body);
69 req->rq_replen = lustre_msg_size(1, &size);
71 rc = mdc_reint(req, LUSTRE_CONN_FULL);
73 if (rc == -ERESTARTSYS )
79 int mdc_create(struct lustre_handle *conn,
80 struct inode *dir, const char *name, int namelen,
81 const char *tgt, int tgtlen, int mode, __u32 uid,
82 __u32 gid, __u64 time, __u64 rdev, struct lov_stripe_md *smd,
83 struct ptlrpc_request **request)
85 struct mds_rec_create *rec;
86 struct ptlrpc_client *cl;
87 struct ptlrpc_connection *connection;
88 struct lustre_handle *rconn;
89 struct ptlrpc_request *req;
90 int rc, size[3] = {sizeof(struct mds_rec_create), namelen + 1, 0};
91 char *tmp, *bufs[3] = {NULL, NULL, NULL};
92 int level, bufcount = 2;
97 CERROR("File create, but no md (%ld, %*s)\n",
98 dir->i_ino, namelen, name);
101 size[2] = smd->lmd_size;
102 bufs[2] = (char *)smd;
104 } else if (S_ISLNK(mode)) {
105 size[2] = tgtlen + 1;
109 mdc_con2cl(conn, &cl, &connection, &rconn);
110 req = ptlrpc_prep_req2(cl, connection, rconn,
111 MDS_REINT, bufcount, size, bufs);
115 /* mds_create_pack fills bufs[1] with name */
116 rec = lustre_msg_buf(req->rq_reqmsg, 0);
117 mds_create_pack(req, 0, dir, mode, rdev, uid, gid, time,
118 name, namelen, NULL, 0);
121 tmp = lustre_msg_buf(req->rq_reqmsg, 2);
122 memcpy(tmp, smd, smd->lmd_size);
123 } else if (S_ISLNK(mode)) {
124 tmp = lustre_msg_buf(req->rq_reqmsg, 2);
125 LOGL0(tgt, tgtlen, tmp);
128 size[0] = sizeof(struct mds_body);
129 req->rq_replen = lustre_msg_size(1, size);
131 level = LUSTRE_CONN_FULL;
133 rc = mdc_reint(req, level);
134 if (rc == -ERESTARTSYS) {
135 struct mds_update_record_hdr *hdr =
136 lustre_msg_buf(req->rq_reqmsg, 0);
137 level = LUSTRE_CONN_RECOVD;
138 CERROR("Lost reply: re-create rep.\n");
140 hdr->ur_opcode = NTOH__u32(REINT_RECREATE);
148 int mdc_unlink(struct lustre_handle *conn,
149 struct inode *dir, struct inode *child, const char *name,
150 int namelen, struct ptlrpc_request **request)
152 struct ptlrpc_client *cl;
153 struct ptlrpc_connection *connection;
154 struct lustre_handle *rconn;
155 struct ptlrpc_request *req;
156 int rc, size[2] = {sizeof(struct mds_rec_unlink), namelen + 1};
159 mdc_con2cl(conn, &cl, &connection, &rconn);
160 req = ptlrpc_prep_req2(cl, connection, rconn,
161 MDS_REINT, 2, size, NULL);
165 mds_unlink_pack(req, 0, dir, child, name, namelen);
167 size[0] = sizeof(struct mds_body);
168 req->rq_replen = lustre_msg_size(1, size);
170 rc = mdc_reint(req, LUSTRE_CONN_FULL);
172 if (rc == -ERESTARTSYS )
178 int mdc_link(struct lustre_handle *conn,
179 struct dentry *src, struct inode *dir, const char *name,
180 int namelen, struct ptlrpc_request **request)
182 struct ptlrpc_client *cl;
183 struct ptlrpc_connection *connection;
184 struct lustre_handle *rconn;
185 struct ptlrpc_request *req;
186 int rc, size[2] = {sizeof(struct mds_rec_link), namelen + 1};
189 mdc_con2cl(conn, &cl, &connection, &rconn);
190 req = ptlrpc_prep_req2(cl, connection, rconn,
191 MDS_REINT, 2, size, NULL);
195 mds_link_pack(req, 0, src->d_inode, dir, name, namelen);
197 size[0] = sizeof(struct mds_body);
198 req->rq_replen = lustre_msg_size(1, size);
200 rc = mdc_reint(req, LUSTRE_CONN_FULL);
202 if (rc == -ERESTARTSYS )
208 int mdc_rename(struct lustre_handle *conn,
209 struct inode *src, struct inode *tgt, const char *old,
210 int oldlen, const char *new, int newlen,
211 struct ptlrpc_request **request)
213 struct ptlrpc_client *cl;
214 struct ptlrpc_connection *connection;
215 struct lustre_handle *rconn;
216 struct ptlrpc_request *req;
217 int rc, size[3] = {sizeof(struct mds_rec_rename), oldlen + 1,
221 mdc_con2cl(conn, &cl, &connection, &rconn);
222 req = ptlrpc_prep_req2(cl, connection, rconn,
223 MDS_REINT, 3, size, NULL);
227 mds_rename_pack(req, 0, src, tgt, old, oldlen, new, newlen);
229 size[0] = sizeof(struct mds_body);
230 req->rq_replen = lustre_msg_size(1, size);
232 rc = mdc_reint(req, LUSTRE_CONN_FULL);
234 if (rc == -ERESTARTSYS )