1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
5 * Author: Zach Brown <zab@clusterfs.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <linux/version.h>
24 #include <linux/module.h>
27 #define DEBUG_SUBSYSTEM S_PTLBD
29 #include <linux/obd_support.h>
30 #include <linux/obd_class.h>
31 #include <linux/lustre_debug.h>
32 #include <linux/lprocfs_status.h>
33 #include <linux/obd_ptlbd.h>
35 #define BACKING_FILE "/tmp/ptlbd-backing-file-la-la-la"
37 static int ptlbd_sv_already_setup = 1;
39 static int ptlbd_sv_setup(struct obd_device *obddev, obd_count len, void *buf)
41 struct ptlbd_obd *ptlbd = &obddev->u.ptlbd;
45 ptlbd->filp = filp_open(BACKING_FILE,
46 O_RDWR|O_CREAT|O_LARGEFILE, 0600);
48 if ( IS_ERR(ptlbd->filp) )
49 RETURN(PTR_ERR(ptlbd->filp));
51 ptlbd->ptlbd_service =
52 ptlrpc_init_svc(PTLBD_NEVENTS, PTLBD_NBUFS, PTLBD_BUFSIZE,
53 PTLBD_MAXREQSIZE, PTLBD_REQUEST_PORTAL,
55 ptlbd_handle, "ptlbd_sv",
56 obddev->obd_proc_entry);
58 if (ptlbd->ptlbd_service == NULL)
59 GOTO(out_filp, rc = -ENOMEM);
61 rc = ptlrpc_start_n_threads(obddev, ptlbd->ptlbd_service, 1, "ptldb");
65 ptlbd_sv_already_setup = 1;
70 ptlrpc_unregister_service(ptlbd->ptlbd_service);
72 filp_close(ptlbd->filp, NULL);
77 static int ptlbd_sv_cleanup(struct obd_device *obddev, int flags)
79 struct ptlbd_obd *ptlbd = &obddev->u.ptlbd;
82 /* XXX check for state */
84 ptlrpc_stop_all_threads(ptlbd->ptlbd_service);
85 ptlrpc_unregister_service(ptlbd->ptlbd_service);
86 if ( ! IS_ERR(ptlbd->filp) )
87 filp_close(ptlbd->filp, NULL);
89 ptlbd_sv_already_setup = 0;
93 static struct obd_ops ptlbd_sv_obd_ops = {
95 o_setup: ptlbd_sv_setup,
96 o_cleanup: ptlbd_sv_cleanup,
97 o_connect: class_connect,
98 o_disconnect: class_disconnect,
101 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
102 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
103 LPROCFS_INIT_VARS(ptlbd_sv, lprocfs_module_vars, lprocfs_obd_vars)
105 int ptlbd_sv_init(void)
107 struct lprocfs_static_vars lvars;
109 lprocfs_init_vars(ptlbd_sv,&lvars);
110 return class_register_type(&ptlbd_sv_obd_ops, lvars.module_vars,
111 OBD_PTLBD_SV_DEVICENAME);
114 void ptlbd_sv_exit(void)
116 class_unregister_type(OBD_PTLBD_SV_DEVICENAME);