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/version.h>
30 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
31 #include <linux/swapctl.h>
33 #include <linux/proc_fs.h>
34 #include <linux/slab.h>
35 #include <linux/stat.h>
36 #include <linux/ctype.h>
37 #include <asm/bitops.h>
38 #include <asm/segment.h>
39 #include <asm/uaccess.h>
40 #include <linux/utsname.h>
42 #define DEBUG_SUBSYSTEM S_CLASS
44 #include <linux/obd_support.h>
46 struct ctl_table_header *obd_table_header = NULL;
51 static int obd_sctl_vars( ctl_table * table, int write, struct file *
52 filp, void * buffer, size_t * lenp );
53 static int obd_sctl_reset( ctl_table * table, int write, struct file
54 * filp, void * buffer, size_t * lenp );
56 #define OBD_SYSCTL 300
58 #define OBD_FAIL_LOC 1 /* control test failures instrumentation */
59 #define OBD_ENTRY 2 /* control enter/leave pattern */
63 #define OBD_TIMEOUT 6 /* RPC timeout before recovery/intr */
64 /* XXX move to /proc/sys/lustre/recovery? */
65 #define OBD_UPCALL 7 /* path to recovery upcall */
66 /* XXX temporary, as we play with sync osts.. */
67 #define OBD_SYNCFILTER 8
69 #define OBD_VARS_SLOT 2
71 static ctl_table obd_table[] = {
72 {OBD_FAIL_LOC, "fail_loc", &obd_fail_loc, sizeof(int), 0644, NULL, &proc_dointvec},
73 {OBD_VARS, "vars", &vars[0], sizeof(int), 0644, NULL, &proc_dointvec},
74 {OBD_INDEX, "index", &index, sizeof(int), 0644, NULL, &obd_sctl_vars},
75 {OBD_RESET, "reset", NULL, 0, 0644, NULL, &obd_sctl_reset},
76 {OBD_TIMEOUT, "timeout", &obd_timeout, sizeof(int), 0644, NULL, &proc_dointvec},
77 /* XXX need to lock so we avoid update races with the recovery upcall! */
78 {OBD_UPCALL, "recovery_upcall", obd_recovery_upcall, 128, 0644, NULL,
79 &proc_dostring, &sysctl_string },
80 {OBD_SYNCFILTER, "filter_sync_on_commit", &obd_sync_filter, sizeof(int),
81 0644, NULL, &proc_dointvec},
85 static ctl_table parent_table[] = {
86 {OBD_SYSCTL, "lustre", NULL, 0, 0555, obd_table},
90 void obd_sysctl_init (void)
93 if ( !obd_table_header )
94 obd_table_header = register_sysctl_table(parent_table, 0);
98 void obd_sysctl_clean (void)
101 if ( obd_table_header )
102 unregister_sysctl_table(obd_table_header);
103 obd_table_header = NULL;
107 int obd_sctl_reset (ctl_table * table, int write,
108 struct file * filp, void * buffer,
112 /* do something here */
121 int obd_sctl_vars (ctl_table * table, int write,
122 struct file * filp, void * buffer,
127 rc = proc_dointvec(table, write, filp, buffer, lenp);
132 if ( index < 0 || index > 1 ) {
133 CERROR("Illegal index %d!\n", index);
136 obd_table[OBD_VARS_SLOT].data = &vars[index];