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 Portals, http://www.sf.net/projects/lustre/
8 * Portals 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 * Portals 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 Portals; 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 #include <linux/string.h>
30 #include <linux/stat.h>
31 #include <linux/errno.h>
32 #include <linux/locks.h>
33 #include <linux/unistd.h>
35 #include <asm/system.h>
36 #include <asm/uaccess.h>
37 #include <linux/module.h>
40 #include <linux/stat.h>
41 #include <asm/uaccess.h>
42 #include <asm/segment.h>
43 #include <linux/miscdevice.h>
45 #define DEBUG_SUBSYSTEM S_MDC
47 #include <linux/obd_support.h>
48 #include <linux/obd_class.h>
49 #include <linux/lustre_lib.h>
50 #include <linux/lustre_idl.h>
51 #include <linux/lustre_mds.h>
53 #define REQUEST_MINOR 244
55 extern int mds_queue_req(struct ptlrpc_request *);
58 int mdc_getattr(struct ptlrpc_client *cl, ino_t ino, int type, int valid,
59 struct ptlrpc_request **req)
62 struct ptlrpc_request *request;
66 request = ptlrpc_prep_req(cl, MDS_GETATTR, 0, NULL, 0, NULL);
68 CERROR("llight request: cannot pack\n");
74 ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
76 request->rq_req.mds->valid = valid;
78 sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
80 rc = ptlrpc_queue_wait(cl, request);
81 rc = ptlrpc_check_status(request, rc);
84 CDEBUG(D_NET, "mode: %o\n", request->rq_rep.mds->mode);
92 int mdc_open(struct ptlrpc_client *cl, ino_t ino, int type, int flags,
93 __u64 *fh, struct ptlrpc_request **req)
95 struct ptlrpc_request *request;
98 request = ptlrpc_prep_req(cl, MDS_OPEN, 0, NULL, 0, NULL);
100 CERROR("llight request: cannot pack\n");
105 ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
106 request->rq_req.mds->flags = HTON__u32(flags);
108 sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
110 rc = ptlrpc_queue_wait(cl, request);
111 rc = ptlrpc_check_status(request, rc);
114 CERROR("llight request: error in handling %d\n", rc);
118 *fh = request->rq_rep.mds->objid;
125 int mdc_close(struct ptlrpc_client *cl, ino_t ino, int type, __u64 fh,
126 struct ptlrpc_request **req)
128 struct ptlrpc_request *request;
131 request = ptlrpc_prep_req(cl, MDS_CLOSE, 0, NULL, 0, NULL);
133 CERROR("llight request: cannot pack\n");
138 ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
139 request->rq_req.mds->objid = fh;
141 sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
143 rc = ptlrpc_queue_wait(cl, request);
144 rc = ptlrpc_check_status(request, rc);
147 CERROR("llight request: error in handling %d\n", rc);
156 int mdc_readpage(struct ptlrpc_client *cl, ino_t ino, int type, __u64 offset,
157 char *addr, struct ptlrpc_request **req)
159 struct ptlrpc_request *request = NULL;
160 struct ptlrpc_bulk_desc *bulk = NULL;
161 struct niobuf niobuf;
164 niobuf.addr = (__u64) (long) addr;
166 CDEBUG(D_INODE, "inode: %ld\n", ino);
168 bulk = ptlrpc_prep_bulk(&cl->cli_server);
170 CERROR("%s: cannot init bulk desc\n", __FUNCTION__);
175 request = ptlrpc_prep_req(cl, MDS_READPAGE, 0, NULL,
176 sizeof(struct niobuf), (char *)&niobuf);
178 CERROR("%s: cannot pack\n", __FUNCTION__);
183 bulk->b_buflen = PAGE_SIZE;
184 bulk->b_buf = (void *)(long)niobuf.addr;
185 bulk->b_portal = MDS_BULK_PORTAL;
186 bulk->b_xid = request->rq_xid;
188 rc = ptlrpc_register_bulk(bulk);
190 CERROR("%s: couldn't setup bulk sink: error %d.\n",
195 request->rq_req.mds->fid1.id = ino;
196 request->rq_req.mds->fid1.f_type = type;
197 request->rq_req.mds->size = offset;
198 request->rq_req.mds->tgtlen = sizeof(niobuf);
199 request->rq_replen = sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
201 rc = ptlrpc_queue_wait(cl, request);
203 CERROR("mdc request: error in handling %d\n", rc);
207 CDEBUG(D_INODE, "mode: %o\n", request->rq_rep.mds->mode);
212 OBD_FREE(bulk, sizeof(*bulk));
216 static int request_ioctl(struct inode *inode, struct file *file,
217 unsigned int cmd, unsigned long arg)
220 struct ptlrpc_client cl;
221 struct ptlrpc_request *request;
225 if (MINOR(inode->i_rdev) != REQUEST_MINOR) {
230 if ( _IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
231 _IOC_NR(cmd) < IOC_REQUEST_MIN_NR ||
232 _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
233 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
234 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
239 /* XXX complete this to get debugging working again */
242 CERROR("cannot create client\n");
247 case IOC_REQUEST_GETATTR: {
248 CERROR("-- getting attr for ino 2\n");
249 err = mdc_getattr(&cl, 2, S_IFDIR, ~0, &request);
251 CERROR("-- done err %d\n", err);
255 case IOC_REQUEST_READPAGE: {
257 OBD_ALLOC(buf, PAGE_SIZE);
262 CERROR("-- readpage 0 for ino 2\n");
263 err = mdc_readpage(&cl, 2, S_IFDIR, 0, buf, &request);
264 CERROR("-- done err %d\n", err);
265 OBD_FREE(buf, PAGE_SIZE);
269 case IOC_REQUEST_SETATTR: {
274 iattr.ia_mode = 040777;
276 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
278 err = mdc_setattr(&cl, &inode, &iattr, &request);
279 CERROR("-- done err %d\n", err);
283 case IOC_REQUEST_CREATE: {
288 iattr.ia_mode = 040777;
290 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
292 err = mdc_create(&cl, &inode,
293 "foofile", strlen("foofile"),
294 NULL, 0, 0100707, 47114711,
295 11, 47, 0, &request);
296 CERROR("-- done err %d\n", err);
310 static struct file_operations requestdev_fops = {
311 ioctl: request_ioctl,
315 static struct miscdevice request_dev = {
322 static int __init ptlrpc_request_init(void)
324 misc_register(&request_dev);
329 static void __exit ptlrpc_request_exit(void)
331 misc_deregister(&request_dev);
334 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
335 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
336 MODULE_LICENSE("GPL");
338 EXPORT_SYMBOL(mdc_create);
339 EXPORT_SYMBOL(mdc_unlink);
340 EXPORT_SYMBOL(mdc_rename);
341 EXPORT_SYMBOL(mdc_link);
342 EXPORT_SYMBOL(mdc_getattr);
343 EXPORT_SYMBOL(mdc_readpage);
344 EXPORT_SYMBOL(mdc_setattr);
345 EXPORT_SYMBOL(mdc_close);
346 EXPORT_SYMBOL(mdc_open);
348 module_init(ptlrpc_request_init);
349 module_exit(ptlrpc_request_exit);