lustre/obdclass/darwin/darwin-sysctl.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 /*
  31  * This file is part of Lustre, http://www.lustre.org/
  32  * Lustre is a trademark of Sun Microsystems, Inc.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/kernel.h>
  37 #include <sys/malloc.h>
  38 #include <sys/systm.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/proc.h>
  41 #include <sys/unistd.h>
  42 #include <mach/mach_types.h>
  43 #include <lustre/lustre_build_version.h>
  44
  45 #define DEBUG_SUBSYSTEM S_CLASS
  46
  47 #include <libcfs/libcfs.h>
  48 #ifndef BUILD_VERSION
  49 #define BUILD_VERSION           "Unknown"
  50 #endif
  51 #ifndef LUSTRE_KERNEL_VERSION
  52 #define LUSTRE_KERNEL_VERSION   "Unknown Darwin version"
  53 #endif
  54
  55 cfs_sysctl_table_header_t *obd_table_header = NULL;
  56
  57 int proc_obd_timeout SYSCTL_HANDLER_ARGS;
  58 extern unsigned int obd_dump_on_timeout;
  59 extern unsigned int obd_timeout;
  60 extern unsigned int ldlm_timeout;
  61 extern unsigned int obd_sync_filter;
  62 extern atomic_t obd_memory;
  63
  64 int read_build_version SYSCTL_HANDLER_ARGS;
  65 int read_lustre_kernel_version SYSCTL_HANDLER_ARGS;
  66
  67 SYSCTL_NODE (,                  OID_AUTO,       lustre,     CTLFLAG_RW,
  68              0,                 "lustre sysctl top");
  69 SYSCTL_PROC(_lustre,            OID_AUTO,       timeout,
  70             CTLTYPE_INT | CTLFLAG_RW ,          &obd_timeout,
  71             0,          &proc_obd_timeout,      "I",    "obd_timeout");
  72 SYSCTL_PROC(_lustre,            OID_AUTO,       build_version,
  73             CTLTYPE_STRING | CTLFLAG_RD ,       NULL,
  74             0,          &read_build_version,    "A",    "lustre_build_version");
  75 SYSCTL_PROC(_lustre,            OID_AUTO,       lustre_kernel_version,
  76             CTLTYPE_STRING | CTLFLAG_RD ,       NULL,
  77             0,          &read_lustre_kernel_version,    "A",    "lustre_build_version");
  78 SYSCTL_INT(_lustre,             OID_AUTO,       dump_on_timeout,
  79            CTLTYPE_INT | CTLFLAG_RW,            &obd_dump_on_timeout,
  80            0,           "lustre_dump_on_timeout");
  81 SYSCTL_INT(_lustre,             OID_AUTO,       debug_peer_on_timeout,
  82            CTLTYPE_INT | CTLFLAG_RW,            &obd_debug_peer_on_timeout,
  83            0,           "lustre_debug_peer_on_timeout");
  84 SYSCTL_INT(_lustre,             OID_AUTO,       memused,
  85            CTLTYPE_INT | CTLFLAG_RW,            (int *)&obd_memory.counter,
  86            0,           "lustre_memory_used");
  87 SYSCTL_INT(_lustre,             OID_AUTO,       ldlm_timeout,
  88            CTLTYPE_INT | CTLFLAG_RW,            &ldlm_timeout,
  89            0,           "ldlm_timeout");
  90
  91 static cfs_sysctl_table_t      parent_table[] = {
  92         &sysctl__lustre,
  93         &sysctl__lustre_timeout,
  94         &sysctl__lustre_dump_on_timeout,
  95         &sysctl__lustre_debug_peer_on_timeout,
  96         &sysctl__lustre_upcall,
  97         &sysctl__lustre_memused,
  98         &sysctl__lustre_filter_sync_on_commit,
  99         &sysctl__lustre_ldlm_timeout,
 100 };
 101
 102 int proc_obd_timeout SYSCTL_HANDLER_ARGS
 103 {
 104         int error = 0;
 105
 106         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 107         if (!error && req->newptr != USER_ADDR_NULL) {
 108                 if (ldlm_timeout >= obd_timeout)
 109                         ldlm_timeout = max(obd_timeout / 3, 1U);
 110         } else  if (req->newptr != USER_ADDR_NULL) {
 111                 printf ("sysctl fail obd_timeout: %d.\n", error);
 112         } else {
 113                 /* Read request */
 114                 error = SYSCTL_OUT(req, &obd_timeout, sizeof obd_timeout);
 115         }
 116         return error;
 117 }
 118
 119 int read_build_version SYSCTL_HANDLER_ARGS
 120 {
 121         int error = 0;
 122
 123         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 124         if ( req->newptr != USER_ADDR_NULL) {
 125                 printf("sysctl read_build_version is read-only!\n");
 126         } else {
 127                 error = SYSCTL_OUT(req, BUILD_VERSION, strlen(BUILD_VERSION));
 128         }
 129         return error;
 130 }
 131
 132 int read_lustre_kernel_version SYSCTL_HANDLER_ARGS
 133 {
 134         int error = 0;
 135
 136         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 137         if ( req->newptr != NULL) {
 138                 printf("sysctl lustre_kernel_version is read-only!\n");
 139         } else {
 140                 error = SYSCTL_OUT(req, LUSTRE_KERNEL_VERSION, strlen(LUSTRE_KERNEL_VERSION));
 141         }
 142         return error;
 143 }
 144
 145 void obd_sysctl_init (void)
 146 {
 147 #if 1
 148         if ( !obd_table_header )
 149                 obd_table_header = cfs_register_sysctl_table(parent_table, 0);
 150 #endif
 151 }
 152
 153 void obd_sysctl_clean (void)
 154 {
 155 #if 1
 156         if ( obd_table_header )
 157                 cfs_unregister_sysctl_table(obd_table_header);
 158         obd_table_header = NULL;
 159 #endif
 160 }