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_replen = lustre_msg_size(1, &size);
53 mds_pack_req_body(req);
54 rc = ptlrpc_queue_wait(req);
55 rc = ptlrpc_check_status(req, rc);
58 mds_unpack_rep_body(req);
59 body = lustre_msg_buf(req->rq_repmsg, 0);
60 memcpy(rootfid, &body->fid1, sizeof(*rootfid));
61 *last_committed = body->last_committed;
62 *last_rcvd = body->last_rcvd;
63 *last_xid = body->last_xid;
65 CDEBUG(D_NET, "root ino=%ld, last_committed=%ld, last_rcvd=%ld,"
67 (unsigned long)rootfid->id,
68 (unsigned long)body->last_committed,
69 (unsigned long)body->last_rcvd,
80 int mdc_getattr(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
81 ino_t ino, int type, unsigned long valid,
82 struct ptlrpc_request **request)
84 struct ptlrpc_request *req;
85 struct mds_body *body;
86 int rc, size = sizeof(*body);
89 req = ptlrpc_prep_req(cl, conn, MDS_GETATTR, 1, &size, NULL);
91 GOTO(out, rc = -ENOMEM);
93 body = lustre_msg_buf(req->rq_reqmsg, 0);
94 ll_ino2fid(&body->fid1, ino, 0, type);
97 req->rq_replen = lustre_msg_size(1, &size);
99 rc = ptlrpc_queue_wait(req);
100 rc = ptlrpc_check_status(req, rc);
103 mds_unpack_rep_body(req);
104 body = lustre_msg_buf(req->rq_repmsg, 0);
105 CDEBUG(D_NET, "mode: %o\n", body->mode);
114 int mdc_open(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
115 ino_t ino, int type, int flags, __u64 *fh,
116 struct ptlrpc_request **request)
118 struct mds_body *body;
119 int rc, size = sizeof(*body);
120 struct ptlrpc_request *req;
122 req = ptlrpc_prep_req(cl, conn, MDS_OPEN, 1, &size, NULL);
124 GOTO(out, rc = -ENOMEM);
126 body = lustre_msg_buf(req->rq_reqmsg, 0);
127 ll_ino2fid(&body->fid1, ino, 0, type);
128 body->flags = HTON__u32(flags);
130 req->rq_replen = lustre_msg_size(1, &size);
132 rc = ptlrpc_queue_wait(req);
133 rc = ptlrpc_check_status(req, rc);
136 mds_unpack_rep_body(req);
137 body = lustre_msg_buf(req->rq_repmsg, 0);
147 int mdc_close(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
148 ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
150 struct mds_body *body;
151 int rc, size = sizeof(*body);
152 struct ptlrpc_request *req;
154 req = ptlrpc_prep_req(cl, conn, MDS_CLOSE, 1, &size, NULL);
156 GOTO(out, rc = -ENOMEM);
158 body = lustre_msg_buf(req->rq_reqmsg, 0);
159 ll_ino2fid(&body->fid1, ino, 0, type);
162 req->rq_replen = lustre_msg_size(1, &size);
164 rc = ptlrpc_queue_wait(req);
165 rc = ptlrpc_check_status(req, rc);
173 int mdc_readpage(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
174 ino_t ino, int type, __u64 offset, char *addr,
175 struct ptlrpc_request **request)
177 struct ptlrpc_request *req = NULL;
178 struct ptlrpc_bulk_desc *bulk = NULL;
179 struct niobuf niobuf;
180 struct mds_body *body;
181 int rc, size[2] = {sizeof(*body), sizeof(struct niobuf)};
182 char *bufs[2] = {NULL, (char *)&niobuf};
184 niobuf.addr = (__u64) (long) addr;
186 CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
188 bulk = ptlrpc_prep_bulk(conn);
190 CERROR("%s: cannot init bulk desc\n", __FUNCTION__);
195 req = ptlrpc_prep_req(cl, conn, MDS_READPAGE, 2, size, bufs);
197 GOTO(out, rc = -ENOMEM);
199 bulk->b_buflen = PAGE_SIZE;
200 bulk->b_buf = (void *)(long)niobuf.addr;
201 bulk->b_portal = MDS_BULK_PORTAL;
202 bulk->b_xid = req->rq_reqmsg->xid;
204 rc = ptlrpc_register_bulk(bulk);
206 CERROR("couldn't setup bulk sink: error %d.\n", rc);
210 body = lustre_msg_buf(req->rq_reqmsg, 0);
212 body->fid1.f_type = type;
215 req->rq_replen = lustre_msg_size(1, size);
217 rc = ptlrpc_queue_wait(req);
219 CERROR("error in handling %d\n", rc);
220 ptlrpc_abort_bulk(bulk);
224 mds_unpack_rep_body(req);
229 ptlrpc_free_bulk(bulk);
233 static int request_ioctl(struct inode *inode, struct file *file,
234 unsigned int cmd, unsigned long arg)
237 struct ptlrpc_client cl;
238 struct ptlrpc_connection *conn;
239 struct ptlrpc_request *request;
243 if (MINOR(inode->i_rdev) != REQUEST_MINOR)
246 if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
247 _IOC_NR(cmd) < IOC_REQUEST_MIN_NR ||
248 _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
249 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
250 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
254 ptlrpc_init_client(NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
255 conn = ptlrpc_uuid_to_connection("mds");
257 CERROR("cannot create client\n");
262 case IOC_REQUEST_GETATTR: {
263 CERROR("-- getting attr for ino %lu\n", arg);
264 err = mdc_getattr(&cl, conn, arg, S_IFDIR, ~0, &request);
265 CERROR("-- done err %d\n", err);
270 case IOC_REQUEST_READPAGE: {
272 OBD_ALLOC(buf, PAGE_SIZE);
277 CERROR("-- readpage 0 for ino %lu\n", arg);
278 err = mdc_readpage(&cl, conn, arg, S_IFDIR, 0, buf, &request);
279 CERROR("-- done err %d\n", err);
280 OBD_FREE(buf, PAGE_SIZE);
285 case IOC_REQUEST_SETATTR: {
290 inode.i_generation = 0;
291 iattr.ia_mode = 040777;
293 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
295 err = mdc_setattr(&cl, conn, &inode, &iattr, &request);
296 CERROR("-- done err %d\n", err);
301 case IOC_REQUEST_CREATE: {
306 inode.i_generation = 0;
307 iattr.ia_mode = 040777;
309 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
311 err = mdc_create(&cl, conn, &inode,
312 "foofile", strlen("foofile"),
313 NULL, 0, 0100707, 47114711,
314 11, 47, 0, &request);
315 CERROR("-- done err %d\n", err);
320 case IOC_REQUEST_OPEN: {
322 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
323 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
324 err = mdc_open(&cl, conn, ino, S_IFDIR, O_RDONLY, &fh,
326 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
327 CERROR("-- done err %d (fh=%Lu)\n", err,
328 (unsigned long long)fh);
333 case IOC_REQUEST_CLOSE: {
334 CERROR("-- closing ino 2, filehandle %lu\n", arg);
335 err = mdc_close(&cl, conn, 2, S_IFDIR, arg, &request);
336 CERROR("-- done err %d\n", err);
342 GOTO(out, err = -EINVAL);
346 ptlrpc_free_req(request);
347 ptlrpc_put_connection(conn);
353 static struct file_operations requestdev_fops = {
354 ioctl: request_ioctl,
357 static struct miscdevice request_dev = {
363 static int __init ptlrpc_request_init(void)
365 misc_register(&request_dev);
369 static void __exit ptlrpc_request_exit(void)
371 misc_deregister(&request_dev);
374 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
375 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
376 MODULE_LICENSE("GPL");
378 EXPORT_SYMBOL(mdc_connect);
379 EXPORT_SYMBOL(mdc_getattr);
380 EXPORT_SYMBOL(mdc_create);
381 EXPORT_SYMBOL(mdc_unlink);
382 EXPORT_SYMBOL(mdc_rename);
383 EXPORT_SYMBOL(mdc_link);
384 EXPORT_SYMBOL(mdc_readpage);
385 EXPORT_SYMBOL(mdc_setattr);
386 EXPORT_SYMBOL(mdc_close);
387 EXPORT_SYMBOL(mdc_open);
389 module_init(ptlrpc_request_init);
390 module_exit(ptlrpc_request_exit);