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/module.h>
26 #include <linux/miscdevice.h>
28 #define DEBUG_SUBSYSTEM S_MDC
30 #include <linux/lustre_mds.h>
31 #include <linux/lustre_lite.h>
33 #define REQUEST_MINOR 244
35 extern int mds_queue_req(struct ptlrpc_request *);
37 int mdc_connect(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
38 struct ll_fid *rootfid, __u64 *last_committed, __u64 *last_rcvd,
39 __u32 *last_xid, struct ptlrpc_request **request)
41 struct ptlrpc_request *req;
42 struct mds_body *body;
43 int rc, size = sizeof(*body);
46 req = ptlrpc_prep_req(cl, conn, MDS_CONNECT, 1, &size, NULL);
48 GOTO(out, rc = -ENOMEM);
50 body = lustre_msg_buf(req->rq_reqmsg, 0);
51 req->rq_level = LUSTRE_CONN_CON;
52 req->rq_replen = lustre_msg_size(1, &size);
54 mds_pack_req_body(req);
55 rc = ptlrpc_queue_wait(req);
56 rc = ptlrpc_check_status(req, rc);
59 mds_unpack_rep_body(req);
60 body = lustre_msg_buf(req->rq_repmsg, 0);
61 memcpy(rootfid, &body->fid1, sizeof(*rootfid));
62 *last_committed = req->rq_repmsg->last_committed;
63 *last_rcvd = req->rq_repmsg->last_rcvd;
64 *last_xid = body->last_xid;
66 CDEBUG(D_NET, "root ino=%ld, last_committed=%Lu, last_rcvd=%Lu,"
68 (unsigned long)rootfid->id,
69 (unsigned long long)*last_committed,
70 (unsigned long long)*last_rcvd,
81 int mdc_getattr(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
82 ino_t ino, int type, unsigned long valid, size_t ea_size,
83 struct ptlrpc_request **request)
85 struct ptlrpc_request *req;
86 struct mds_body *body;
87 int rc, size[2] = {sizeof(*body), 0}, bufcount = 1;
90 req = ptlrpc_prep_req(cl, conn, MDS_GETATTR, 1, size, NULL);
92 GOTO(out, rc = -ENOMEM);
94 body = lustre_msg_buf(req->rq_reqmsg, 0);
95 ll_ino2fid(&body->fid1, ino, 0, type);
98 if (valid & OBD_MD_LINKNAME) {
102 req->rq_replen = lustre_msg_size(bufcount, size);
103 req->rq_level = LUSTRE_CONN_FULL;
105 rc = ptlrpc_queue_wait(req);
106 rc = ptlrpc_check_status(req, rc);
109 mds_unpack_rep_body(req);
110 body = lustre_msg_buf(req->rq_repmsg, 0);
111 CDEBUG(D_NET, "mode: %o\n", body->mode);
120 int mdc_open(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
121 ino_t ino, int type, int flags, __u64 cookie, __u64 *fh,
122 struct ptlrpc_request **request)
124 struct mds_body *body;
125 int rc, size = sizeof(*body);
126 struct ptlrpc_request *req;
128 req = ptlrpc_prep_req(cl, conn, MDS_OPEN, 1, &size, NULL);
130 GOTO(out, rc = -ENOMEM);
132 req->rq_flags |= PTL_RPC_FL_REPLAY;
133 req->rq_level = LUSTRE_CONN_FULL;
134 body = lustre_msg_buf(req->rq_reqmsg, 0);
135 ll_ino2fid(&body->fid1, ino, 0, type);
136 body->flags = HTON__u32(flags);
137 body->objid = cookie;
139 req->rq_replen = lustre_msg_size(1, &size);
141 rc = ptlrpc_queue_wait(req);
142 rc = ptlrpc_check_status(req, rc);
145 mds_unpack_rep_body(req);
146 body = lustre_msg_buf(req->rq_repmsg, 0);
156 int mdc_close(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
157 ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
159 struct mds_body *body;
160 int rc, size = sizeof(*body);
161 struct ptlrpc_request *req;
163 req = ptlrpc_prep_req(cl, conn, MDS_CLOSE, 1, &size, NULL);
165 GOTO(out, rc = -ENOMEM);
167 body = lustre_msg_buf(req->rq_reqmsg, 0);
168 ll_ino2fid(&body->fid1, ino, 0, type);
171 req->rq_level = LUSTRE_CONN_FULL;
172 req->rq_replen = lustre_msg_size(0, NULL);
174 rc = ptlrpc_queue_wait(req);
175 rc = ptlrpc_check_status(req, rc);
183 int mdc_readpage(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
184 ino_t ino, int type, __u64 offset, char *addr,
185 struct ptlrpc_request **request)
187 struct ptlrpc_request *req = NULL;
188 struct ptlrpc_bulk_desc *desc = NULL;
189 struct ptlrpc_bulk_page *bulk = NULL;
190 struct mds_body *body;
191 int rc, size = sizeof(*body);
194 CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
196 desc = ptlrpc_prep_bulk(conn);
198 GOTO(out, rc = -ENOMEM);
200 req = ptlrpc_prep_req(cl, conn, MDS_READPAGE, 1, &size, NULL);
202 GOTO(out2, rc = -ENOMEM);
204 bulk = ptlrpc_prep_bulk_page(desc);
205 bulk->b_buflen = PAGE_SIZE;
207 bulk->b_xid = req->rq_reqmsg->xid;
208 desc->b_portal = MDS_BULK_PORTAL;
210 rc = ptlrpc_register_bulk(desc);
212 CERROR("couldn't setup bulk sink: error %d.\n", rc);
216 body = lustre_msg_buf(req->rq_reqmsg, 0);
218 body->fid1.f_type = type;
221 req->rq_replen = lustre_msg_size(1, &size);
222 req->rq_level = LUSTRE_CONN_FULL;
223 rc = ptlrpc_queue_wait(req);
224 rc = ptlrpc_check_status(req, rc);
226 ptlrpc_abort_bulk(desc);
229 mds_unpack_rep_body(req);
233 ptlrpc_free_bulk(desc);
240 int mdc_statfs(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
241 struct statfs *statfs,
242 struct ptlrpc_request **request)
244 struct mds_rec_setattr *rec;
245 struct ptlrpc_request *req;
246 int rc, size = sizeof(*rec);
249 req = ptlrpc_prep_req(cl, conn, MDS_STATFS, 1, &size, NULL);
253 rec = lustre_msg_buf(req->rq_reqmsg, 0);
254 mds_setattr_pack(rec, inode, iattr);
256 size = sizeof(struct mds_body);
257 req->rq_replen = lustre_msg_size(1, &size);
259 rc = mdc_reint(cl, req, LUSTRE_CONN_FULL);
261 if (rc == -ERESTARTSYS )
268 static int request_ioctl(struct inode *inode, struct file *file,
269 unsigned int cmd, unsigned long arg)
272 struct ptlrpc_client cl;
273 struct ptlrpc_connection *conn;
274 struct ptlrpc_request *request;
278 if (MINOR(inode->i_rdev) != REQUEST_MINOR)
281 if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
282 _IOC_NR(cmd) < IOC_REQUEST_MIN_NR ||
283 _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
284 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
285 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
289 ptlrpc_init_client(NULL, NULL,
290 MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
291 conn = ptlrpc_uuid_to_connection("mds");
293 CERROR("cannot create client\n");
298 case IOC_REQUEST_GETATTR: {
299 CERROR("-- getting attr for ino %lu\n", arg);
300 err = mdc_getattr(&cl, conn, arg, S_IFDIR, ~0, 0, &request);
301 CERROR("-- done err %d\n", err);
306 case IOC_REQUEST_READPAGE: {
308 OBD_ALLOC(buf, PAGE_SIZE);
313 CERROR("-- readpage 0 for ino %lu\n", arg);
314 err = mdc_readpage(&cl, conn, arg, S_IFDIR, 0, buf, &request);
315 CERROR("-- done err %d\n", err);
316 OBD_FREE(buf, PAGE_SIZE);
321 case IOC_REQUEST_SETATTR: {
326 inode.i_generation = 0;
327 iattr.ia_mode = 040777;
329 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
331 err = mdc_setattr(&cl, conn, &inode, &iattr, &request);
332 CERROR("-- done err %d\n", err);
337 case IOC_REQUEST_CREATE: {
342 inode.i_generation = 0;
343 iattr.ia_mode = 040777;
345 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
347 err = mdc_create(&cl, conn, &inode,
348 "foofile", strlen("foofile"),
349 NULL, 0, 0100707, 47114711,
350 11, 47, 0, &request);
351 CERROR("-- done err %d\n", err);
356 case IOC_REQUEST_OPEN: {
358 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
359 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
360 err = mdc_open(&cl, conn, ino, S_IFDIR, O_RDONLY, 4711, &fh,
362 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
363 CERROR("-- done err %d (fh=%Lu)\n", err,
364 (unsigned long long)fh);
369 case IOC_REQUEST_CLOSE: {
370 CERROR("-- closing ino 2, filehandle %lu\n", arg);
371 err = mdc_close(&cl, conn, 2, S_IFDIR, arg, &request);
372 CERROR("-- done err %d\n", err);
378 GOTO(out, err = -EINVAL);
382 ptlrpc_free_req(request);
383 ptlrpc_put_connection(conn);
384 ptlrpc_cleanup_client(&cl);
390 static struct file_operations requestdev_fops = {
391 ioctl: request_ioctl,
394 static struct miscdevice request_dev = {
400 static int __init ptlrpc_request_init(void)
402 misc_register(&request_dev);
406 static void __exit ptlrpc_request_exit(void)
408 misc_deregister(&request_dev);
411 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
412 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
413 MODULE_LICENSE("GPL");
415 EXPORT_SYMBOL(mdc_connect);
416 EXPORT_SYMBOL(mdc_getattr);
417 EXPORT_SYMBOL(mdc_create);
418 EXPORT_SYMBOL(mdc_unlink);
419 EXPORT_SYMBOL(mdc_rename);
420 EXPORT_SYMBOL(mdc_link);
421 EXPORT_SYMBOL(mdc_readpage);
422 EXPORT_SYMBOL(mdc_setattr);
423 EXPORT_SYMBOL(mdc_close);
424 EXPORT_SYMBOL(mdc_open);
426 module_init(ptlrpc_request_init);
427 module_exit(ptlrpc_request_exit);