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>
32 #define REQUEST_MINOR 244
34 extern int mds_queue_req(struct ptlrpc_request *);
36 int mdc_connect(struct ptlrpc_client *cl, struct lustre_peer *peer, ino_t ino,
37 int type, int valid, struct ptlrpc_request **request)
39 struct ptlrpc_request *req;
40 struct mds_body *body;
41 int rc, size = sizeof(*body);
44 req = ptlrpc_prep_req(cl, peer, MDS_GETATTR, 1, &size, NULL);
46 GOTO(out, rc = -ENOMEM);
48 body = lustre_msg_buf(req->rq_reqmsg, 0);
49 ll_ino2fid(&body->fid1, ino, 0, type);
52 req->rq_replen = lustre_msg_size(1, &size);
54 rc = ptlrpc_queue_wait(cl, req);
55 rc = ptlrpc_check_status(req, rc);
59 body = lustre_msg_buf(req->rq_repmsg, 0);
60 CDEBUG(D_NET, "mode: %o\n", body->mode);
70 int mdc_getattr(struct ptlrpc_client *cl, struct lustre_peer *peer, ino_t ino,
71 int type, int valid, struct ptlrpc_request **request)
73 struct ptlrpc_request *req;
74 struct mds_body *body;
75 int rc, size = sizeof(*body);
78 req = ptlrpc_prep_req(cl, peer, MDS_GETATTR, 1, &size, NULL);
80 GOTO(out, rc = -ENOMEM);
82 body = lustre_msg_buf(req->rq_reqmsg, 0);
83 ll_ino2fid(&body->fid1, ino, 0, type);
86 req->rq_replen = lustre_msg_size(1, &size);
88 rc = ptlrpc_queue_wait(cl, req);
89 rc = ptlrpc_check_status(req, rc);
93 body = lustre_msg_buf(req->rq_repmsg, 0);
94 CDEBUG(D_NET, "mode: %o\n", body->mode);
103 int mdc_open(struct ptlrpc_client *cl, struct lustre_peer *peer, ino_t ino,
104 int type, int flags, __u64 *fh, struct ptlrpc_request **request)
106 struct mds_body *body;
107 int rc, size = sizeof(*body);
108 struct ptlrpc_request *req;
110 req = ptlrpc_prep_req(cl, peer, MDS_OPEN, 1, &size, NULL);
112 GOTO(out, rc = -ENOMEM);
114 body = lustre_msg_buf(req->rq_reqmsg, 0);
115 ll_ino2fid(&body->fid1, ino, 0, type);
116 body->flags = HTON__u32(flags);
118 req->rq_replen = lustre_msg_size(1, &size);
120 rc = ptlrpc_queue_wait(cl, req);
121 rc = ptlrpc_check_status(req, rc);
124 mds_unpack_body(req);
125 body = lustre_msg_buf(req->rq_repmsg, 0);
135 int mdc_close(struct ptlrpc_client *cl, struct lustre_peer *peer, ino_t ino,
136 int type, __u64 fh, struct ptlrpc_request **request)
138 struct mds_body *body;
139 int rc, size = sizeof(*body);
140 struct ptlrpc_request *req;
142 req = ptlrpc_prep_req(cl, peer, MDS_CLOSE, 1, &size, NULL);
144 GOTO(out, rc = -ENOMEM);
146 body = lustre_msg_buf(req->rq_reqmsg, 0);
147 ll_ino2fid(&body->fid1, ino, 0, type);
150 req->rq_replen = lustre_msg_size(1, &size);
152 rc = ptlrpc_queue_wait(cl, req);
153 rc = ptlrpc_check_status(req, rc);
161 int mdc_readpage(struct ptlrpc_client *cl, struct lustre_peer *peer, ino_t ino,
162 int type, __u64 offset, char *addr,
163 struct ptlrpc_request **request)
165 struct ptlrpc_request *req = NULL;
166 struct ptlrpc_bulk_desc *bulk = NULL;
167 struct niobuf niobuf;
168 struct mds_body *body;
169 int rc, size[2] = {sizeof(*body), sizeof(struct niobuf)};
170 char *bufs[2] = {NULL, (char *)&niobuf};
172 niobuf.addr = (__u64) (long) addr;
174 CDEBUG(D_INODE, "inode: %ld\n", ino);
176 bulk = ptlrpc_prep_bulk(peer);
178 CERROR("%s: cannot init bulk desc\n", __FUNCTION__);
183 req = ptlrpc_prep_req(cl, peer, MDS_READPAGE, 2, size, bufs);
185 GOTO(out, rc = -ENOMEM);
187 bulk->b_buflen = PAGE_SIZE;
188 bulk->b_buf = (void *)(long)niobuf.addr;
189 bulk->b_portal = MDS_BULK_PORTAL;
190 bulk->b_xid = req->rq_xid;
192 rc = ptlrpc_register_bulk(bulk);
194 CERROR("couldn't setup bulk sink: error %d.\n", rc);
198 body = lustre_msg_buf(req->rq_reqmsg, 0);
200 body->fid1.f_type = type;
203 req->rq_replen = lustre_msg_size(1, size);
205 rc = ptlrpc_queue_wait(cl, req);
207 CERROR("error in handling %d\n", rc);
208 ptlrpc_abort_bulk(bulk);
212 mds_unpack_body(req);
218 OBD_FREE(bulk, sizeof(*bulk));
222 static int request_ioctl(struct inode *inode, struct file *file,
223 unsigned int cmd, unsigned long arg)
226 struct ptlrpc_client cl;
227 struct lustre_peer peer;
228 struct ptlrpc_request *request;
232 if (MINOR(inode->i_rdev) != REQUEST_MINOR)
235 if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
236 _IOC_NR(cmd) < IOC_REQUEST_MIN_NR ||
237 _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
238 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
239 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
243 ptlrpc_init_client(NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
244 err = ptlrpc_connect_client("mds", &cl, &peer);
246 CERROR("cannot create client\n");
251 case IOC_REQUEST_GETATTR: {
252 CERROR("-- getting attr for ino %lu\n", arg);
253 err = mdc_getattr(&cl, &peer, arg, S_IFDIR, ~0, &request);
254 CERROR("-- done err %d\n", err);
259 case IOC_REQUEST_READPAGE: {
261 OBD_ALLOC(buf, PAGE_SIZE);
266 CERROR("-- readpage 0 for ino %lu\n", arg);
267 err = mdc_readpage(&cl, &peer, arg, S_IFDIR, 0, buf, &request);
268 CERROR("-- done err %d\n", err);
269 OBD_FREE(buf, PAGE_SIZE);
274 case IOC_REQUEST_SETATTR: {
279 inode.i_generation = 0;
280 iattr.ia_mode = 040777;
282 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
284 err = mdc_setattr(&cl, &peer, &inode, &iattr, &request);
285 CERROR("-- done err %d\n", err);
290 case IOC_REQUEST_CREATE: {
295 inode.i_generation = 0;
296 iattr.ia_mode = 040777;
298 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
300 err = mdc_create(&cl, &peer, &inode,
301 "foofile", strlen("foofile"),
302 NULL, 0, 0100707, 47114711,
303 11, 47, 0, &request);
304 CERROR("-- done err %d\n", err);
309 case IOC_REQUEST_OPEN: {
311 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
312 CERROR("-- opening ino %llu\n", ino);
313 err = mdc_open(&cl, &peer, ino, S_IFDIR, O_RDONLY, &fh,
315 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
316 CERROR("-- done err %d (fh=%Lu)\n", err, fh);
321 case IOC_REQUEST_CLOSE: {
322 CERROR("-- closing ino 2, filehandle %lu\n", arg);
323 err = mdc_close(&cl, &peer, 2, S_IFDIR, arg, &request);
324 CERROR("-- done err %d\n", err);
334 ptlrpc_free_req(request);
340 static struct file_operations requestdev_fops = {
341 ioctl: request_ioctl,
344 static struct miscdevice request_dev = {
350 static int __init ptlrpc_request_init(void)
352 misc_register(&request_dev);
356 static void __exit ptlrpc_request_exit(void)
358 misc_deregister(&request_dev);
361 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
362 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
363 MODULE_LICENSE("GPL");
365 EXPORT_SYMBOL(mdc_create);
366 EXPORT_SYMBOL(mdc_unlink);
367 EXPORT_SYMBOL(mdc_rename);
368 EXPORT_SYMBOL(mdc_link);
369 EXPORT_SYMBOL(mdc_getattr);
370 EXPORT_SYMBOL(mdc_readpage);
371 EXPORT_SYMBOL(mdc_setattr);
372 EXPORT_SYMBOL(mdc_close);
373 EXPORT_SYMBOL(mdc_open);
375 module_init(ptlrpc_request_init);
376 module_exit(ptlrpc_request_exit);