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.lustre.org.
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.
23 #include <linux/module.h>
24 #include <linux/autoconf.h>
25 #include <linux/sysctl.h>
26 #include <linux/sched.h>
28 #include <linux/sysctl.h>
29 #include <linux/swapctl.h>
30 #include <linux/proc_fs.h>
31 #include <linux/slab.h>
32 #include <linux/stat.h>
33 #include <linux/ctype.h>
34 #include <asm/bitops.h>
35 #include <asm/segment.h>
36 #include <asm/uaccess.h>
37 #include <linux/utsname.h>
39 #define DEBUG_SUBSYSTEM S_CLASS
41 #include <linux/obd_support.h>
43 struct ctl_table_header *obd_table_header = NULL;
48 static int obd_sctl_vars( ctl_table * table, int write, struct file *
49 filp, void * buffer, size_t * lenp );
50 static int obd_sctl_reset( ctl_table * table, int write, struct file
51 * filp, void * buffer, size_t * lenp );
53 #define OBD_SYSCTL 300
55 #define OBD_FAIL_LOC 1 /* control test failures instrumentation */
56 #define OBD_ENTRY 2 /* control enter/leave pattern */
60 #define OBD_TIMEOUT 6 /* RPC timeout before recovery/intr */
61 /* XXX move to /proc/sys/lustre/recovery? */
62 #define OBD_UPCALL 7 /* path to recovery upcall */
64 #define OBD_VARS_SLOT 2
66 static ctl_table obd_table[] = {
67 {OBD_FAIL_LOC, "fail_loc", &obd_fail_loc, sizeof(int), 0644, NULL, &proc_dointvec},
68 {OBD_VARS, "vars", &vars[0], sizeof(int), 0644, NULL, &proc_dointvec},
69 {OBD_INDEX, "index", &index, sizeof(int), 0644, NULL, &obd_sctl_vars},
70 {OBD_RESET, "reset", NULL, 0, 0644, NULL, &obd_sctl_reset},
71 {OBD_TIMEOUT, "timeout", &obd_timeout, sizeof(int), 0644, NULL, &proc_dointvec},
72 /* XXX need to lock so we avoid update races with the recovery upcall! */
73 {OBD_UPCALL, "recovery_upcall", obd_recovery_upcall, 128, 0644, NULL,
74 &proc_dostring, &sysctl_string },
78 static ctl_table parent_table[] = {
79 {OBD_SYSCTL, "lustre", NULL, 0, 0555, obd_table},
83 void obd_sysctl_init (void)
86 if ( !obd_table_header )
87 obd_table_header = register_sysctl_table(parent_table, 0);
91 void obd_sysctl_clean (void)
94 if ( obd_table_header )
95 unregister_sysctl_table(obd_table_header);
96 obd_table_header = NULL;
100 int obd_sctl_reset (ctl_table * table, int write,
101 struct file * filp, void * buffer,
105 /* do something here */
114 int obd_sctl_vars (ctl_table * table, int write,
115 struct file * filp, void * buffer,
120 rc = proc_dointvec(table, write, filp, buffer, lenp);
125 if ( index < 0 || index > 1 ) {
126 CERROR("Illegal index %d!\n", index);
129 obd_table[OBD_VARS_SLOT].data = &vars[index];