drivers/staging/lustre/lustre/ptlrpc/sec_lproc.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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 /*
  27  * This file is part of Lustre, http://www.lustre.org/
  28  * Lustre is a trademark of Sun Microsystems, Inc.
  29  *
  30  * lustre/ptlrpc/sec_lproc.c
  31  *
  32  * Author: Eric Mei <ericm@clusterfs.com>
  33  */
  34
  35 #define DEBUG_SUBSYSTEM S_SEC
  36
  37 #include "../../include/linux/libcfs/libcfs.h"
  38 #include <linux/crypto.h>
  39
  40 #include "../include/obd.h"
  41 #include "../include/obd_class.h"
  42 #include "../include/obd_support.h"
  43 #include "../include/lustre_net.h"
  44 #include "../include/lustre_import.h"
  45 #include "../include/lustre_dlm.h"
  46 #include "../include/lustre_sec.h"
  47
  48 #include "ptlrpc_internal.h"
  49
  50 static char *sec_flags2str(unsigned long flags, char *buf, int bufsize)
  51 {
  52         buf[0] = '\0';
  53
  54         if (flags & PTLRPC_SEC_FL_REVERSE)
  55                 strlcat(buf, "reverse,", bufsize);
  56         if (flags & PTLRPC_SEC_FL_ROOTONLY)
  57                 strlcat(buf, "rootonly,", bufsize);
  58         if (flags & PTLRPC_SEC_FL_UDESC)
  59                 strlcat(buf, "udesc,", bufsize);
  60         if (flags & PTLRPC_SEC_FL_BULK)
  61                 strlcat(buf, "bulk,", bufsize);
  62         if (buf[0] == '\0')
  63                 strlcat(buf, "-,", bufsize);
  64
  65         return buf;
  66 }
  67
  68 static int sptlrpc_info_lprocfs_seq_show(struct seq_file *seq, void *v)
  69 {
  70         struct obd_device *dev = seq->private;
  71         struct client_obd *cli = &dev->u.cli;
  72         struct ptlrpc_sec *sec = NULL;
  73         char str[32];
  74
  75         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
  76                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
  77                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
  78
  79         if (cli->cl_import)
  80                 sec = sptlrpc_import_sec_ref(cli->cl_import);
  81         if (!sec)
  82                 goto out;
  83
  84         sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str));
  85
  86         seq_printf(seq, "rpc flavor:    %s\n",
  87                    sptlrpc_flavor2name_base(sec->ps_flvr.sf_rpc));
  88         seq_printf(seq, "bulk flavor:   %s\n",
  89                    sptlrpc_flavor2name_bulk(&sec->ps_flvr, str, sizeof(str)));
  90         seq_printf(seq, "flags:  %s\n",
  91                    sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str)));
  92         seq_printf(seq, "id:        %d\n", sec->ps_id);
  93         seq_printf(seq, "refcount:      %d\n",
  94                    atomic_read(&sec->ps_refcount));
  95         seq_printf(seq, "nctx:    %d\n", atomic_read(&sec->ps_nctx));
  96         seq_printf(seq, "gc internal    %ld\n", sec->ps_gc_interval);
  97         seq_printf(seq, "gc next        %lld\n",
  98                    sec->ps_gc_interval ?
  99                    (s64)(sec->ps_gc_next - ktime_get_real_seconds()) : 0ll);
 100
 101         sptlrpc_sec_put(sec);
 102 out:
 103         return 0;
 104 }
 105
 106 LPROC_SEQ_FOPS_RO(sptlrpc_info_lprocfs);
 107
 108 static int sptlrpc_ctxs_lprocfs_seq_show(struct seq_file *seq, void *v)
 109 {
 110         struct obd_device *dev = seq->private;
 111         struct client_obd *cli = &dev->u.cli;
 112         struct ptlrpc_sec *sec = NULL;
 113
 114         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
 115                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
 116                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
 117
 118         if (cli->cl_import)
 119                 sec = sptlrpc_import_sec_ref(cli->cl_import);
 120         if (!sec)
 121                 goto out;
 122
 123         if (sec->ps_policy->sp_cops->display)
 124                 sec->ps_policy->sp_cops->display(sec, seq);
 125
 126         sptlrpc_sec_put(sec);
 127 out:
 128         return 0;
 129 }
 130
 131 LPROC_SEQ_FOPS_RO(sptlrpc_ctxs_lprocfs);
 132
 133 int sptlrpc_lprocfs_cliobd_attach(struct obd_device *dev)
 134 {
 135         int rc;
 136
 137         if (strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) != 0 &&
 138             strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) != 0 &&
 139             strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) != 0) {
 140                 CERROR("can't register lproc for obd type %s\n",
 141                        dev->obd_type->typ_name);
 142                 return -EINVAL;
 143         }
 144
 145         rc = ldebugfs_obd_seq_create(dev, "srpc_info", 0444,
 146                                      &sptlrpc_info_lprocfs_fops, dev);
 147         if (rc) {
 148                 CERROR("create proc entry srpc_info for %s: %d\n",
 149                        dev->obd_name, rc);
 150                 return rc;
 151         }
 152
 153         rc = ldebugfs_obd_seq_create(dev, "srpc_contexts", 0444,
 154                                      &sptlrpc_ctxs_lprocfs_fops, dev);
 155         if (rc) {
 156                 CERROR("create proc entry srpc_contexts for %s: %d\n",
 157                        dev->obd_name, rc);
 158                 return rc;
 159         }
 160
 161         return 0;
 162 }
 163 EXPORT_SYMBOL(sptlrpc_lprocfs_cliobd_attach);
 164
 165 LPROC_SEQ_FOPS_RO(sptlrpc_proc_enc_pool);
 166 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
 167         { "encrypt_page_pools", &sptlrpc_proc_enc_pool_fops },
 168         { NULL }
 169 };
 170
 171 static struct dentry *sptlrpc_debugfs_dir;
 172
 173 int sptlrpc_lproc_init(void)
 174 {
 175         int rc;
 176
 177         LASSERT(!sptlrpc_debugfs_dir);
 178
 179         sptlrpc_debugfs_dir = ldebugfs_register("sptlrpc", debugfs_lustre_root,
 180                                                 sptlrpc_lprocfs_vars, NULL);
 181         if (IS_ERR_OR_NULL(sptlrpc_debugfs_dir)) {
 182                 rc = sptlrpc_debugfs_dir ? PTR_ERR(sptlrpc_debugfs_dir)
 183                                          : -ENOMEM;
 184                 sptlrpc_debugfs_dir = NULL;
 185                 return rc;
 186         }
 187         return 0;
 188 }
 189
 190 void sptlrpc_lproc_fini(void)
 191 {
 192         if (!IS_ERR_OR_NULL(sptlrpc_debugfs_dir))
 193                 ldebugfs_remove(&sptlrpc_debugfs_dir);
 194 }