lustre/obdclass/darwin/darwin-sysctl.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/kernel.h>
  39 #include <sys/malloc.h>
  40 #include <sys/systm.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/proc.h>
  43 #include <sys/unistd.h>
  44 #include <mach/mach_types.h>
  45 #include <lustre/lustre_build_version.h>
  46
  47 #define DEBUG_SUBSYSTEM S_CLASS
  48
  49 #include <libcfs/libcfs.h>
  50 #ifndef BUILD_VERSION
  51 #define BUILD_VERSION           "Unknown"
  52 #endif
  53 #ifndef LUSTRE_KERNEL_VERSION
  54 #define LUSTRE_KERNEL_VERSION   "Unknown Darwin version"
  55 #endif
  56
  57 cfs_sysctl_table_header_t *obd_table_header = NULL;
  58
  59 int proc_obd_timeout SYSCTL_HANDLER_ARGS;
  60 extern unsigned int obd_dump_on_timeout;
  61 extern unsigned int obd_timeout;
  62 extern unsigned int ldlm_timeout;
  63 extern unsigned int obd_sync_filter;
  64 extern atomic_t obd_memory;
  65
  66 int read_build_version SYSCTL_HANDLER_ARGS;
  67 int read_lustre_kernel_version SYSCTL_HANDLER_ARGS;
  68
  69 SYSCTL_NODE (,                  OID_AUTO,       lustre,     CTLFLAG_RW,
  70              0,                 "lustre sysctl top");
  71 SYSCTL_PROC(_lustre,            OID_AUTO,       timeout,
  72             CTLTYPE_INT | CTLFLAG_RW ,          &obd_timeout,
  73             0,          &proc_obd_timeout,      "I",    "obd_timeout");
  74 SYSCTL_PROC(_lustre,            OID_AUTO,       build_version,
  75             CTLTYPE_STRING | CTLFLAG_RD ,       NULL,
  76             0,          &read_build_version,    "A",    "lustre_build_version");
  77 SYSCTL_PROC(_lustre,            OID_AUTO,       lustre_kernel_version,
  78             CTLTYPE_STRING | CTLFLAG_RD ,       NULL,
  79             0,          &read_lustre_kernel_version,    "A",    "lustre_build_version");
  80 SYSCTL_INT(_lustre,             OID_AUTO,       dump_on_timeout,
  81            CTLTYPE_INT | CTLFLAG_RW,            &obd_dump_on_timeout,
  82            0,           "lustre_dump_on_timeout");
  83 SYSCTL_INT(_lustre,             OID_AUTO,       debug_peer_on_timeout,
  84            CTLTYPE_INT | CTLFLAG_RW,            &obd_debug_peer_on_timeout,
  85            0,           "lustre_debug_peer_on_timeout");
  86 SYSCTL_INT(_lustre,             OID_AUTO,       memused,
  87            CTLTYPE_INT | CTLFLAG_RW,            (int *)&obd_memory.counter,
  88            0,           "lustre_memory_used");
  89 SYSCTL_INT(_lustre,             OID_AUTO,       ldlm_timeout,
  90            CTLTYPE_INT | CTLFLAG_RW,            &ldlm_timeout,
  91            0,           "ldlm_timeout");
  92
  93 static cfs_sysctl_table_t      parent_table[] = {
  94         &sysctl__lustre,
  95         &sysctl__lustre_timeout,
  96         &sysctl__lustre_dump_on_timeout,
  97         &sysctl__lustre_debug_peer_on_timeout,
  98         &sysctl__lustre_upcall,
  99         &sysctl__lustre_memused,
 100         &sysctl__lustre_filter_sync_on_commit,
 101         &sysctl__lustre_ldlm_timeout,
 102 };
 103
 104 int proc_obd_timeout SYSCTL_HANDLER_ARGS
 105 {
 106         int error = 0;
 107
 108         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 109         if (!error && req->newptr != USER_ADDR_NULL) {
 110                 if (ldlm_timeout >= obd_timeout)
 111                         ldlm_timeout = max(obd_timeout / 3, 1U);
 112         } else  if (req->newptr != USER_ADDR_NULL) {
 113                 printf ("sysctl fail obd_timeout: %d.\n", error);
 114         } else {
 115                 /* Read request */
 116                 error = SYSCTL_OUT(req, &obd_timeout, sizeof obd_timeout);
 117         }
 118         return error;
 119 }
 120
 121 int read_build_version SYSCTL_HANDLER_ARGS
 122 {
 123         int error = 0;
 124
 125         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 126         if ( req->newptr != USER_ADDR_NULL) {
 127                 printf("sysctl read_build_version is read-only!\n");
 128         } else {
 129                 error = SYSCTL_OUT(req, BUILD_VERSION, strlen(BUILD_VERSION));
 130         }
 131         return error;
 132 }
 133
 134 int read_lustre_kernel_version SYSCTL_HANDLER_ARGS
 135 {
 136         int error = 0;
 137
 138         error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 139         if ( req->newptr != NULL) {
 140                 printf("sysctl lustre_kernel_version is read-only!\n");
 141         } else {
 142                 error = SYSCTL_OUT(req, LUSTRE_KERNEL_VERSION, strlen(LUSTRE_KERNEL_VERSION));
 143         }
 144         return error;
 145 }
 146
 147 void obd_sysctl_init (void)
 148 {
 149 #if 1
 150         if ( !obd_table_header )
 151                 obd_table_header = cfs_register_sysctl_table(parent_table, 0);
 152 #endif
 153 }
 154
 155 void obd_sysctl_clean (void)
 156 {
 157 #if 1
 158         if ( obd_table_header )
 159                 cfs_unregister_sysctl_table(obd_table_header);
 160         obd_table_header = NULL;
 161 #endif
 162 }