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 code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
9 * These are the only exported functions, they provide some generic
10 * infrastructure for managing object devices
12 * Object Devices Class Driver
16 #include <linux/config.h> /* for CONFIG_PROC_FS */
17 #include <linux/module.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/major.h>
21 #include <linux/sched.h>
23 #include <linux/slab.h>
24 #include <linux/ioport.h>
25 #include <linux/fcntl.h>
26 #include <linux/delay.h>
27 #include <linux/skbuff.h>
28 #include <linux/proc_fs.h>
30 #include <linux/poll.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
34 #include <asm/system.h>
36 #include <asm/uaccess.h>
37 #include <linux/miscdevice.h>
39 #define DEBUG_SUBSYSTEM S_CLASS
41 #include <linux/obd_support.h>
42 #include <linux/obd_class.h>
43 #include <linux/lustre_debug.h>
44 #include <linux/smp_lock.h>
45 #include <linux/lprocfs.h>
47 struct semaphore obd_conf_sem; /* serialize configuration commands */
48 struct obd_device obd_dev[MAX_OBD_DEVICES];
49 struct list_head obd_types;
50 unsigned long obd_memory;
52 /* The following are visible and mutable through /proc/sys/lustre/. */
53 unsigned long obd_fail_loc;
54 unsigned long obd_timeout = 100;
55 char obd_recovery_upcall[128] = "/usr/lib/lustre/ha_assist";
57 extern struct obd_type *class_nm_to_type(char *nm);
59 * LProcFS specific data structures. These define the namespace for
60 * the various device classes. We will need to distribute these
61 * later, to individual modules (e.g. MDS, MDC etc)
67 * Common OBD namespace for lprocFS (these are used very often)
70 char* obd_dir_nm_1[]= {
79 lprocfs_vars_t obd_var_nm_1[]= {
80 {"num_ops", lprocfs_ll_rd, lprocfs_ll_wr},
81 {"min_time", lprocfs_ll_rd, lprocfs_ll_wr},
82 {"max_time", lprocfs_ll_rd, lprocfs_ll_wr},
83 {"sum_time", lprocfs_ll_rd, lprocfs_ll_wr},
89 * MDC Spcific namespace for lprocFS
92 char *mdc_dir_nm_1[]= {
107 * Create the MDC groupings
109 lprocfs_group_t lprocfs_mdc_nm[]= {
111 {obd_dir_nm_1, obd_var_nm_1, e_generic},
112 {mdc_dir_nm_1, obd_var_nm_1, e_generic},
117 * MDS Device Groupings
119 char *mds_dir_nm_1[]={
122 "disconnect_callback",
142 char *mds_dir_nm_2[]={
148 lprocfs_vars_t mds_var_nm_2[]={
149 {"f_type", rd_other, wr_other},
150 {"f_bsize",rd_other, wr_other},
151 {"f_blocks",rd_other, wr_other},
152 {"f_bfree",rd_other, wr_other},
153 {"f_bavail",rd_other, wr_other},
154 {"uuid",rd_string, wr_string},
159 lprocfs_group_t lprocfs_mds_nm[]={
160 {obd_dir_nm_1, obd_var_nm_1, e_generic},
161 {mds_dir_nm_1, obd_var_nm_1, e_generic},
162 {mds_dir_nm_2, mds_var_nm_2, e_specific},
170 char* osc_dir_nm_1[]={
184 lprocfs_group_t lprocfs_osc_nm[]={
185 {obd_dir_nm_1, obd_var_nm_1, e_generic},
186 {osc_dir_nm_1, obd_var_nm_1, e_generic},
192 * OST, LOV, OBD_FILTER namespace
193 * Note: These namespaces are exactly similar to the osc_dir_namespace
194 * Hence, I use the osc namespace as the base class and add only
195 * those attributes that are missing in osc_dir_namespace.
198 char *ost_lov_obdfilter_dir_nm_1[]={
204 char *ost_lov_obdfilter_dir_nm_2[]={
209 lprocfs_vars_t ost_lov_obdfilter_var_nm_2[]={
210 {"f_type", rd_other, wr_other},
211 {"f_bsize",rd_other, wr_other},
212 {"f_blocks",rd_other, wr_other},
213 {"f_bfree",rd_other, wr_other},
214 {"f_bavail",rd_other, wr_other},
215 {"f_objects", rd_other, wr_other},
216 {"f_ofree", rd_other, wr_other},
217 {"f_objectgroups", rd_other, wr_other},
218 {"f_uuid", rd_string, wr_string},
223 lprocfs_group_t lprocfs_ost_lov_obdf_nm[]={
224 {obd_dir_nm_1, obd_var_nm_1, e_generic},
225 {osc_dir_nm_1, obd_var_nm_1, e_generic},
226 {ost_lov_obdfilter_dir_nm_1, obd_var_nm_1, e_generic},
227 {ost_lov_obdfilter_dir_nm_2, ost_lov_obdfilter_var_nm_2, e_specific},
232 * LDLM Device namespace
236 char* ldlm_dir_nm_1[]={
245 lprocfs_vars_t ldlm_var_nm_1[]= {
246 {"num_total", lprocfs_ll_rd, lprocfs_ll_wr},
247 {"num_zerolatency", lprocfs_ll_rd, lprocfs_ll_wr},
248 {"num_zerolatency_inflight", lprocfs_ll_rd, lprocfs_ll_wr},
249 {"num_zerolatency_done", lprocfs_ll_rd, lprocfs_ll_wr},
250 {"nonzero_mintime", lprocfs_ll_rd, lprocfs_ll_wr},
251 {"nonzero_maxtime", lprocfs_ll_rd, lprocfs_ll_wr},
252 {"nonzero_sumtime", lprocfs_ll_rd, lprocfs_ll_wr},
257 lprocfs_group_t lprocfs_ldlm_nm[]={
258 {obd_dir_nm_1, obd_var_nm_1, e_generic},
259 {ldlm_dir_nm_1, ldlm_var_nm_1, e_generic},
264 * Note: Need to add namespace for breaking out locks by device class
270 char* ptlrpc_dir_nm_1[]={
275 lprocfs_vars_t ptlrpc_var_nm_1[]={
276 {"msgs_alloc", lprocfs_ll_rd, lprocfs_ll_wr},
277 {"msgs_max", lprocfs_ll_rd, lprocfs_ll_wr},
278 {"recv_count", lprocfs_ll_rd, lprocfs_ll_wr},
279 {"recv_length", lprocfs_ll_rd, lprocfs_ll_wr},
280 {"send_count", lprocfs_ll_rd, lprocfs_ll_wr},
281 {"send_length", lprocfs_ll_rd, lprocfs_ll_wr},
282 {"portal_kmemory", lprocfs_ll_rd, lprocfs_ll_wr},
286 char* ptlrpc_dir_nm_2[] = {
291 lprocfs_vars_t ptlrpc_var_nm_2[] = {
292 {"type", rd_string, wr_string},
293 {"mtu", lprocfs_ll_rd, lprocfs_ll_wr},
294 {"rxpackets", lprocfs_ll_rd, lprocfs_ll_wr},
295 {"txpackets", lprocfs_ll_rd, lprocfs_ll_wr},
296 {"txbytes", lprocfs_ll_rd, lprocfs_ll_wr},
300 lprocfs_group_t lprocfs_ptlrpc_nm[]={
301 {obd_dir_nm_1, obd_var_nm_1, e_generic},
302 {ptlrpc_dir_nm_1, ptlrpc_var_nm_1, e_generic},
303 {ptlrpc_dir_nm_2, ptlrpc_var_nm_2, e_specific},
309 * Building the entire device namespace. This will be used during attach and
310 * detach to associate the namespace with the class of the device
313 lprocfs_obd_nm_t obd_nm[]={
314 {"mdc", lprocfs_mdc_nm, sizeof(struct lprofiler_gen)},
315 {"mds", lprocfs_mds_nm, sizeof(struct lprofiler_gen)},
316 {"osc", lprocfs_osc_nm, sizeof(struct lprofiler_gen)},
317 {"ost", lprocfs_ost_lov_obdf_nm, sizeof(struct lprofiler_gen)},
318 {"lov", lprocfs_ost_lov_obdf_nm, sizeof(struct lprofiler_gen)},
319 {"obdfilter", lprocfs_ost_lov_obdf_nm, sizeof(struct lprofiler_gen)},
320 {"obdecho", lprocfs_ost_lov_obdf_nm, sizeof(struct lprofiler_gen)},
321 {"ldlm", lprocfs_ldlm_nm, sizeof(struct lprofiler_ldlm)},
322 {"ptlrpc", lprocfs_ptlrpc_nm, sizeof(struct lprofiler_ptlrpc)},
328 lprocfs_obd_nm_t* obd_nm=0;
332 /* opening /dev/obd */
333 static int obd_class_open(struct inode * inode, struct file * file)
337 file->private_data = NULL;
338 CDEBUG(D_IOCTL, "MOD_INC_USE for open: count = %d\n",
339 atomic_read(&(THIS_MODULE)->uc.usecount));
344 /* closing /dev/obd */
345 static int obd_class_release(struct inode * inode, struct file * file)
349 // XXX drop lsm, connections here
350 if (file->private_data)
351 file->private_data = NULL;
353 CDEBUG(D_IOCTL, "MOD_DEC_USE for close: count = %d\n",
354 atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
360 inline void obd_data2conn(struct lustre_handle *conn, struct obd_ioctl_data *data)
362 conn->addr = data->ioc_addr;
363 conn->cookie = data->ioc_cookie;
367 inline void obd_conn2data(struct obd_ioctl_data *data, struct lustre_handle *conn)
369 data->ioc_addr = conn->addr;
370 data->ioc_cookie = conn->cookie;
374 /* to control /dev/obd */
375 static int obd_class_ioctl (struct inode * inode, struct file * filp,
376 unsigned int cmd, unsigned long arg)
380 struct obd_ioctl_data *data;
381 struct obd_device *obd = filp->private_data;
383 struct lustre_handle conn;
384 int rw = OBD_BRW_READ;
392 case OBD_IOC_BRW_WRITE:
393 case OBD_IOC_BRW_READ:
394 case OBD_IOC_GETATTR:
402 if (!obd && cmd != OBD_IOC_DEVICE && cmd != TCGETS &&
403 cmd != OBD_IOC_LIST &&
404 cmd != OBD_IOC_NAME2DEV && cmd != OBD_IOC_NEWDEV) {
405 CERROR("OBD ioctl: No device\n");
406 GOTO(out, err=-EINVAL);
408 if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
409 CERROR("OBD ioctl: data error\n");
410 GOTO(out, err=-EINVAL);
412 data = (struct obd_ioctl_data *)buf;
416 GOTO(out, err=-EINVAL);
417 case OBD_IOC_DEVICE: {
418 CDEBUG(D_IOCTL, "\n");
419 if (data->ioc_dev >= MAX_OBD_DEVICES || data->ioc_dev < 0) {
420 CERROR("OBD ioctl: DEVICE insufficient devices\n");
421 GOTO(out, err=-EINVAL);
423 CDEBUG(D_IOCTL, "device %d\n", data->ioc_dev);
425 filp->private_data = &obd_dev[data->ioc_dev];
431 char *buf2 = data->ioc_bulk;
432 int remains = data->ioc_inllen1;
434 if (!data->ioc_inlbuf1) {
435 CERROR("No buffer passed!\n");
436 GOTO(out, err=-EINVAL);
440 for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
443 struct obd_device *obd = &obd_dev[i];
446 if (obd->obd_flags & OBD_SET_UP)
448 else if (obd->obd_flags & OBD_ATTACHED)
452 l = snprintf(buf2, remains, "%2d %s %s %s %s %d\n",
453 i, status, obd->obd_type->typ_name,
454 obd->obd_name, obd->obd_uuid, obd->obd_type->typ_refcnt);
458 CERROR("not enough space for device listing\n");
463 err = copy_to_user((int *)arg, data, len);
468 case OBD_IOC_NAME2DEV: {
469 /* Resolve a device name. This does not change the
470 * currently selected device.
474 if (!data->ioc_inllen1 || !data->ioc_inlbuf1 ) {
475 CERROR("No name passed,!\n");
476 GOTO(out, err=-EINVAL);
478 if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
479 CERROR("Name not nul terminated!\n");
480 GOTO(out, err=-EINVAL);
483 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
484 dev = class_name2dev(data->ioc_inlbuf1);
487 CDEBUG(D_IOCTL, "No device for name %s!\n",
489 GOTO(out, err=-EINVAL);
492 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
494 err = copy_to_user((int *)arg, data, sizeof(*data));
498 case OBD_IOC_UUID2DEV: {
499 /* Resolve a device uuid. This does not change the
500 * currently selected device.
504 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
505 CERROR("No UUID passed!\n");
506 GOTO(out, err=-EINVAL);
508 if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
509 CERROR("Name not nul terminated!\n");
510 GOTO(out, err=-EINVAL);
513 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
514 dev = class_uuid2dev(data->ioc_inlbuf1);
517 CDEBUG(D_IOCTL, "No device for name %s!\n",
519 GOTO(out, err=-EINVAL);
522 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
524 err = copy_to_user((int *)arg, data, sizeof(*data));
528 case OBD_IOC_NEWDEV: {
532 filp->private_data = NULL;
533 for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
534 struct obd_device *obd = &obd_dev[i];
535 if (!obd->obd_type) {
536 filp->private_data = obd;
545 GOTO(out, err=-EINVAL);
547 err = copy_to_user((int *)arg, data, sizeof(*data));
551 case OBD_IOC_ATTACH: {
552 struct obd_type *type;
555 /* have we attached a type to this device */
556 if (obd->obd_flags & OBD_ATTACHED || obd->obd_type) {
557 CERROR("OBD: Device %d already typed as %s.\n",
558 obd->obd_minor, MKSTR(obd->obd_type->typ_name));
559 GOTO(out, err=-EBUSY);
562 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
563 CERROR("No type passed!\n");
564 GOTO(out, err=-EINVAL);
566 if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
567 CERROR("Type not nul terminated!\n");
568 GOTO(out, err=-EINVAL);
571 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
572 MKSTR(data->ioc_inlbuf1),
573 MKSTR(data->ioc_inlbuf2), MKSTR(data->ioc_inlbuf3));
576 type = class_nm_to_type(data->ioc_inlbuf1);
578 CERROR("OBD: unknown type dev %d\n", obd->obd_minor);
579 GOTO(out, err=-EINVAL);
582 minor = obd->obd_minor;
583 memset(obd, 0, sizeof(*obd));
584 obd->obd_minor = minor;
585 obd->obd_type = type;
586 INIT_LIST_HEAD(&obd->obd_exports);
587 INIT_LIST_HEAD(&obd->obd_imports);
588 spin_lock_init(&obd->obd_dev_lock);
591 if (OBP(obd, attach))
592 err = OBP(obd,attach)(obd, sizeof(*data), data);
594 obd->obd_type = NULL;
596 obd->obd_flags |= OBD_ATTACHED;
599 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s\n",
600 obd->obd_minor, data->ioc_inlbuf1);
601 if (data->ioc_inlbuf2) {
602 int len = strlen(data->ioc_inlbuf2) + 1;
603 OBD_ALLOC(obd->obd_name, len);
604 if (!obd->obd_name) {
605 CERROR("no memory\n");
608 memcpy(obd->obd_name, data->ioc_inlbuf2, len);
609 /* obd->obd_proc_entry =
610 proc_lustre_register_obd_device(obd);
613 CERROR("WARNING: unnamed obd device\n");
614 obd->obd_proc_entry = NULL;
617 if (data->ioc_inlbuf3) {
618 int len = strlen(data->ioc_inlbuf3);
619 if (len >= sizeof(obd->obd_uuid)) {
620 CERROR("uuid must be < %d bytes long\n",
621 sizeof(obd->obd_uuid));
623 OBD_FREE(obd->obd_name,
624 strlen(obd->obd_name) + 1);
625 GOTO(out, err=-EINVAL);
627 memcpy(obd->obd_uuid, data->ioc_inlbuf3, len);
629 /* Get the LprocFS namespace for this device class */
631 l_idx = lprocfs_get_nm(data->ioc_inlbuf1, obd_nm);
633 CERROR("Non-existent device class"
634 "or proc/lustre not compiled \n");
636 lprocfs_reg_dev(obd, obd_nm[l_idx].obd_names,
637 obd_nm[l_idx].cntr_blk_sz);
640 CDEBUG(D_IOCTL, "MOD_INC_USE for attach: count = %d\n",
641 atomic_read(&(THIS_MODULE)->uc.usecount));
648 case OBD_IOC_DETACH: {
650 if (obd->obd_flags & OBD_SET_UP) {
651 CERROR("OBD device %d still set up\n", obd->obd_minor);
652 GOTO(out, err=-EBUSY);
654 if (!(obd->obd_flags & OBD_ATTACHED) ) {
655 CERROR("OBD device %d not attached\n", obd->obd_minor);
656 GOTO(out, err=-ENODEV);
658 #warning FIXME: Mike, we probably need some sort of "force detach" here
659 if (!list_empty(&obd->obd_exports) ) {
660 CERROR("OBD device %d (%p) has exports\n",
661 obd->obd_minor, obd);
662 GOTO(out, err=-EBUSY);
666 if (lprocfs_dereg_dev(obd) != LPROCFS_SUCCESS) {
667 CERROR("Could not remove /proc entry\n");
671 OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
672 obd->obd_name = NULL;
675 if (obd->obd_proc_entry)
676 proc_lustre_release_obd_device(obd);
679 obd->obd_flags &= ~OBD_ATTACHED;
680 obd->obd_type->typ_refcnt--;
681 obd->obd_type = NULL;
682 CDEBUG(D_IOCTL, "MOD_DEC_USE for detach: count = %d\n",
683 atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
688 case OBD_IOC_SETUP: {
689 /* have we attached a type to this device? */
690 if (!(obd->obd_flags & OBD_ATTACHED)) {
691 CERROR("Device %d not attached\n", obd->obd_minor);
692 GOTO(out, err=-ENODEV);
695 /* has this been done already? */
696 if ( obd->obd_flags & OBD_SET_UP ) {
697 CERROR("Device %d already setup (type %s)\n",
698 obd->obd_minor, obd->obd_type->typ_name);
699 GOTO(out, err=-EBUSY);
702 if ( OBT(obd) && OBP(obd, setup) )
703 err = obd_setup(obd, sizeof(*data), data);
706 obd->obd_type->typ_refcnt++;
707 obd->obd_flags |= OBD_SET_UP;
712 case OBD_IOC_CLEANUP: {
713 /* have we attached a type to this device? */
714 if (!(obd->obd_flags & OBD_ATTACHED)) {
715 CERROR("Device %d not attached\n", obd->obd_minor);
716 GOTO(out, err=-ENODEV);
719 if ( OBT(obd) && OBP(obd, cleanup) )
720 err = obd_cleanup(obd);
723 obd->obd_flags &= ~OBD_SET_UP;
724 obd->obd_type->typ_refcnt--;
729 case OBD_IOC_CONNECT: {
730 char * cluuid = "OBD_CLASS_UUID";
731 obd_data2conn(&conn, data);
733 err = obd_connect(&conn, obd, cluuid);
735 CDEBUG(D_IOCTL, "assigned export "LPX64"\n", conn.addr);
736 obd_conn2data(data, &conn);
740 err = copy_to_user((int *)arg, data, sizeof(*data));
741 // XXX save connection data into file handle
745 case OBD_IOC_DISCONNECT: {
746 obd_data2conn(&conn, data);
747 err = obd_disconnect(&conn);
751 case OBD_IOC_DEC_USE_COUNT: {
752 CDEBUG(D_IOCTL, "MOD_DEC_USE for force dec: count = %d\n",
753 atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
758 case OBD_IOC_CREATE: {
759 struct lov_stripe_md *lsm = NULL;
760 obd_data2conn(&conn, data);
762 #warning FIXME: save lsm into file handle for other ops, release on close
763 err = obd_create(&conn, &data->ioc_obdo1, &lsm);
767 err = copy_to_user((int *)arg, data, sizeof(*data));
771 case OBD_IOC_GETATTR: {
773 obd_data2conn(&conn, data);
774 err = obd_getattr(&conn, &data->ioc_obdo1, NULL);
778 err = copy_to_user((int *)arg, data, sizeof(*data));
782 case OBD_IOC_SETATTR: {
783 obd_data2conn(&conn, data);
784 err = obd_setattr(&conn, &data->ioc_obdo1, NULL);
788 err = copy_to_user((int *)arg, data, sizeof(*data));
792 case OBD_IOC_DESTROY: {
794 obd_data2conn(&conn, data);
796 err = obd_destroy(&conn, &data->ioc_obdo1, NULL);
800 err = copy_to_user((int *)arg, data, sizeof(*data));
805 struct lov_stripe_md *lsm = NULL; // XXX fill in from create
807 obd_data2conn(&conn, data);
808 err = obd_open(&conn, &data->ioc_obdo1, lsm);
812 case OBD_IOC_CLOSE: {
813 struct lov_stripe_md *lsm = NULL; // XXX fill in from create
815 obd_data2conn(&conn, data);
816 obd_data2conn(&conn, data);
817 err = obd_close(&conn, &data->ioc_obdo1, lsm);
821 case OBD_IOC_BRW_WRITE:
823 case OBD_IOC_BRW_READ: {
824 struct lov_stripe_md tmp_lsm; // XXX fill in from create
825 struct lov_stripe_md *lsm = &tmp_lsm; // XXX fill in from create
826 struct io_cb_data *cbd = ll_init_cb();
828 struct brw_page *pga, *pgp;
829 __u64 id = data->ioc_obdo1.o_id;
830 int gfp_mask = (id & 1) ? GFP_HIGHUSER : GFP_KERNEL;
831 int verify = (id != 0);
836 GOTO(out, err = -ENOMEM);
838 obd_data2conn(&conn, data);
840 pages = data->ioc_count / PAGE_SIZE;
841 off = data->ioc_offset;
843 CDEBUG(D_INODE, "BRW %s with %d pages @ "LPX64"\n",
844 rw == OBD_BRW_READ ? "read" : "write", pages, off);
845 OBD_ALLOC(pga, pages * sizeof(*pga));
847 CERROR("no memory for %d BRW per-page data\n", pages);
848 GOTO(brw_free, err = -ENOMEM);
851 memset(lsm, 0, sizeof(*lsm)); // XXX don't do this later
852 lsm->lsm_object_id = id; // ensure id == lsm->lsm_object_id
854 for (j = 0, pgp = pga; j < pages; j++, off += PAGE_SIZE, pgp++){
855 pgp->pg = alloc_pages(gfp_mask, 0);
857 CERROR("no memory for brw pages\n");
858 GOTO(brw_cleanup, err = -ENOMEM);
860 pgp->count = PAGE_SIZE;
865 void *addr = kmap(pgp->pg);
867 if (rw == OBD_BRW_WRITE)
868 page_debug_setup(addr, pgp->count,
871 page_debug_setup(addr, pgp->count,
878 err = obd_brw(rw, &conn, lsm, j, pga, ll_sync_io_cb, cbd);
880 CERROR("test_brw: error from obd_brw: err = %d\n", err);
883 for (j = 0, pgp = pga; j < pages; j++, pgp++) {
884 if (pgp->pg != NULL) {
885 if (verify && !err) {
886 void *addr = kmap(pgp->pg);
888 err = page_debug_check("test_brw",
894 __free_pages(pgp->pg, 0);
898 OBD_FREE(pga, pages * sizeof(*pga));
902 obd_data2conn(&conn, data);
904 err = obd_iocontrol(cmd, &conn, len, data, NULL);
908 err = copy_to_user((int *)arg, data, len);
918 } /* obd_class_ioctl */
922 /* declare character device */
923 static struct file_operations obd_psdev_fops = {
924 ioctl: obd_class_ioctl, /* ioctl */
925 open: obd_class_open, /* open */
926 release: obd_class_release, /* release */
930 #define OBD_MINOR 241
931 static struct miscdevice obd_psdev = {
937 void (*class_signal_connection_failure)(struct ptlrpc_connection *);
939 EXPORT_SYMBOL(obd_dev);
940 EXPORT_SYMBOL(obdo_cachep);
941 EXPORT_SYMBOL(obd_memory);
942 EXPORT_SYMBOL(obd_fail_loc);
943 EXPORT_SYMBOL(obd_timeout);
944 EXPORT_SYMBOL(obd_recovery_upcall);
946 EXPORT_SYMBOL(class_register_type);
947 EXPORT_SYMBOL(class_unregister_type);
948 EXPORT_SYMBOL(class_name2dev);
949 EXPORT_SYMBOL(class_uuid2dev);
950 EXPORT_SYMBOL(class_uuid2obd);
951 EXPORT_SYMBOL(class_new_export);
952 EXPORT_SYMBOL(class_destroy_export);
953 EXPORT_SYMBOL(class_connect);
954 EXPORT_SYMBOL(class_conn2export);
955 EXPORT_SYMBOL(class_conn2obd);
956 EXPORT_SYMBOL(class_conn2cliimp);
957 EXPORT_SYMBOL(class_conn2ldlmimp);
958 EXPORT_SYMBOL(class_disconnect);
959 EXPORT_SYMBOL(class_disconnect_all);
960 //EXPORT_SYMBOL(class_uuid_parse);
961 EXPORT_SYMBOL(class_uuid_unparse);
962 //EXPORT_SYMBOL(class_multi_setup);
963 //EXPORT_SYMBOL(class_multi_cleanup);
965 EXPORT_SYMBOL(class_signal_connection_failure);
966 EXPORT_SYMBOL(ll_sync_io_cb);
967 EXPORT_SYMBOL(ll_init_cb);
969 static int __init init_obdclass(void)
971 struct obd_device *obd;
975 printk(KERN_INFO "OBD class driver v0.9, info@clusterfs.com\n");
977 sema_init(&obd_conf_sem, 1);
978 INIT_LIST_HEAD(&obd_types);
980 if ((err = misc_register(&obd_psdev))) {
981 CERROR("cannot register %d err %d\n", OBD_MINOR, err);
985 /* This struct is already zerod for us (static global) */
986 for (i = 0, obd = obd_dev; i < MAX_OBD_DEVICES; i++, obd++)
989 err = obd_init_caches();
996 static void __exit cleanup_obdclass(void)
1001 misc_deregister(&obd_psdev);
1002 for (i = 0; i < MAX_OBD_DEVICES; i++) {
1003 struct obd_device *obd = &obd_dev[i];
1004 if (obd->obd_type && (obd->obd_flags & OBD_SET_UP) &&
1005 OBT(obd) && OBP(obd, detach)) {
1006 /* XXX should this call generic detach otherwise? */
1007 OBP(obd, detach)(obd);
1011 obd_cleanup_caches();
1013 CERROR("obd memory leaked: %ld bytes\n", obd_memory);
1017 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1018 MODULE_DESCRIPTION("Lustre Class Driver v1.0");
1019 MODULE_LICENSE("GPL");
1021 module_init(init_obdclass);
1022 module_exit(cleanup_obdclass);