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, struct ptlrpc_request **request)
40 struct ptlrpc_request *req;
41 struct mds_body *body;
42 int rc, size = sizeof(*body);
45 req = ptlrpc_prep_req(cl, conn, MDS_CONNECT, 1, &size, NULL);
47 GOTO(out, rc = -ENOMEM);
49 body = lustre_msg_buf(req->rq_reqmsg, 0);
50 req->rq_replen = lustre_msg_size(1, &size);
52 mds_pack_req_body(req);
53 rc = ptlrpc_queue_wait(req);
54 rc = ptlrpc_check_status(req, rc);
57 mds_unpack_rep_body(req);
58 body = lustre_msg_buf(req->rq_repmsg, 0);
59 memcpy(rootfid, &body->fid1, sizeof(*rootfid));
61 CDEBUG(D_NET, "root ino: %Ld\n", rootfid->id);
72 int mdc_getattr(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
73 ino_t ino, int type, int valid, struct ptlrpc_request **request)
75 struct ptlrpc_request *req;
76 struct mds_body *body;
77 int rc, size = sizeof(*body);
80 req = ptlrpc_prep_req(cl, conn, MDS_GETATTR, 1, &size, NULL);
82 GOTO(out, rc = -ENOMEM);
84 body = lustre_msg_buf(req->rq_reqmsg, 0);
85 ll_ino2fid(&body->fid1, ino, 0, type);
88 req->rq_replen = lustre_msg_size(1, &size);
90 rc = ptlrpc_queue_wait(req);
91 rc = ptlrpc_check_status(req, rc);
94 mds_unpack_rep_body(req);
95 body = lustre_msg_buf(req->rq_repmsg, 0);
96 CDEBUG(D_NET, "mode: %o\n", body->mode);
105 int mdc_open(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
106 ino_t ino, int type, int flags, __u64 *fh,
107 struct ptlrpc_request **request)
109 struct mds_body *body;
110 int rc, size = sizeof(*body);
111 struct ptlrpc_request *req;
113 req = ptlrpc_prep_req(cl, conn, MDS_OPEN, 1, &size, NULL);
115 GOTO(out, rc = -ENOMEM);
117 body = lustre_msg_buf(req->rq_reqmsg, 0);
118 ll_ino2fid(&body->fid1, ino, 0, type);
119 body->flags = HTON__u32(flags);
121 req->rq_replen = lustre_msg_size(1, &size);
123 rc = ptlrpc_queue_wait(req);
124 rc = ptlrpc_check_status(req, rc);
127 mds_unpack_rep_body(req);
128 body = lustre_msg_buf(req->rq_repmsg, 0);
138 int mdc_close(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
139 ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
141 struct mds_body *body;
142 int rc, size = sizeof(*body);
143 struct ptlrpc_request *req;
145 req = ptlrpc_prep_req(cl, conn, MDS_CLOSE, 1, &size, NULL);
147 GOTO(out, rc = -ENOMEM);
149 body = lustre_msg_buf(req->rq_reqmsg, 0);
150 ll_ino2fid(&body->fid1, ino, 0, type);
153 req->rq_replen = lustre_msg_size(1, &size);
155 rc = ptlrpc_queue_wait(req);
156 rc = ptlrpc_check_status(req, rc);
164 int mdc_readpage(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
165 ino_t ino, int type, __u64 offset, char *addr,
166 struct ptlrpc_request **request)
168 struct ptlrpc_request *req = NULL;
169 struct ptlrpc_bulk_desc *bulk = NULL;
170 struct niobuf niobuf;
171 struct mds_body *body;
172 int rc, size[2] = {sizeof(*body), sizeof(struct niobuf)};
173 char *bufs[2] = {NULL, (char *)&niobuf};
175 niobuf.addr = (__u64) (long) addr;
177 CDEBUG(D_INODE, "inode: %ld\n", ino);
179 bulk = ptlrpc_prep_bulk(conn);
181 CERROR("%s: cannot init bulk desc\n", __FUNCTION__);
186 req = ptlrpc_prep_req(cl, conn, MDS_READPAGE, 2, size, bufs);
188 GOTO(out, rc = -ENOMEM);
190 bulk->b_buflen = PAGE_SIZE;
191 bulk->b_buf = (void *)(long)niobuf.addr;
192 bulk->b_portal = MDS_BULK_PORTAL;
193 bulk->b_xid = req->rq_reqmsg->xid;
195 rc = ptlrpc_register_bulk(bulk);
197 CERROR("couldn't setup bulk sink: error %d.\n", rc);
201 body = lustre_msg_buf(req->rq_reqmsg, 0);
203 body->fid1.f_type = type;
206 req->rq_replen = lustre_msg_size(1, size);
208 rc = ptlrpc_queue_wait(req);
210 CERROR("error in handling %d\n", rc);
211 ptlrpc_abort_bulk(bulk);
215 mds_unpack_rep_body(req);
220 ptlrpc_free_bulk(bulk);
224 static int request_ioctl(struct inode *inode, struct file *file,
225 unsigned int cmd, unsigned long arg)
228 struct ptlrpc_client cl;
229 struct ptlrpc_connection *conn;
230 struct ptlrpc_request *request;
234 if (MINOR(inode->i_rdev) != REQUEST_MINOR)
237 if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
238 _IOC_NR(cmd) < IOC_REQUEST_MIN_NR ||
239 _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
240 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
241 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
245 ptlrpc_init_client(NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
246 conn = ptlrpc_uuid_to_connection("mds");
248 CERROR("cannot create client\n");
253 case IOC_REQUEST_GETATTR: {
254 CERROR("-- getting attr for ino %lu\n", arg);
255 err = mdc_getattr(&cl, conn, arg, S_IFDIR, ~0, &request);
256 CERROR("-- done err %d\n", err);
261 case IOC_REQUEST_READPAGE: {
263 OBD_ALLOC(buf, PAGE_SIZE);
268 CERROR("-- readpage 0 for ino %lu\n", arg);
269 err = mdc_readpage(&cl, conn, arg, S_IFDIR, 0, buf, &request);
270 CERROR("-- done err %d\n", err);
271 OBD_FREE(buf, PAGE_SIZE);
276 case IOC_REQUEST_SETATTR: {
281 inode.i_generation = 0;
282 iattr.ia_mode = 040777;
284 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
286 err = mdc_setattr(&cl, conn, &inode, &iattr, &request);
287 CERROR("-- done err %d\n", err);
292 case IOC_REQUEST_CREATE: {
297 inode.i_generation = 0;
298 iattr.ia_mode = 040777;
300 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
302 err = mdc_create(&cl, conn, &inode,
303 "foofile", strlen("foofile"),
304 NULL, 0, 0100707, 47114711,
305 11, 47, 0, &request);
306 CERROR("-- done err %d\n", err);
311 case IOC_REQUEST_OPEN: {
313 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
314 CERROR("-- opening ino %llu\n", ino);
315 err = mdc_open(&cl, conn, ino, S_IFDIR, O_RDONLY, &fh,
317 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
318 CERROR("-- done err %d (fh=%Lu)\n", err, fh);
323 case IOC_REQUEST_CLOSE: {
324 CERROR("-- closing ino 2, filehandle %lu\n", arg);
325 err = mdc_close(&cl, conn, 2, S_IFDIR, arg, &request);
326 CERROR("-- done err %d\n", err);
336 ptlrpc_free_req(request);
337 ptlrpc_put_connection(conn);
343 static struct file_operations requestdev_fops = {
344 ioctl: request_ioctl,
347 static struct miscdevice request_dev = {
353 static int __init ptlrpc_request_init(void)
355 misc_register(&request_dev);
359 static void __exit ptlrpc_request_exit(void)
361 misc_deregister(&request_dev);
364 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
365 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
366 MODULE_LICENSE("GPL");
368 EXPORT_SYMBOL(mdc_connect);
369 EXPORT_SYMBOL(mdc_getattr);
370 EXPORT_SYMBOL(mdc_create);
371 EXPORT_SYMBOL(mdc_unlink);
372 EXPORT_SYMBOL(mdc_rename);
373 EXPORT_SYMBOL(mdc_link);
374 EXPORT_SYMBOL(mdc_readpage);
375 EXPORT_SYMBOL(mdc_setattr);
376 EXPORT_SYMBOL(mdc_close);
377 EXPORT_SYMBOL(mdc_open);
379 module_init(ptlrpc_request_init);
380 module_exit(ptlrpc_request_exit);