kernel/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.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  * lustre/ptlrpc/sec_lproc.c
  35  *
  36  * Author: Eric Mei <ericm@clusterfs.com>
  37  */
  38
  39 #define DEBUG_SUBSYSTEM S_SEC
  40
  41 #include "../../include/linux/libcfs/libcfs.h"
  42 #include <linux/crypto.h>
  43
  44 #include "../include/obd.h"
  45 #include "../include/obd_class.h"
  46 #include "../include/obd_support.h"
  47 #include "../include/lustre_net.h"
  48 #include "../include/lustre_import.h"
  49 #include "../include/lustre_dlm.h"
  50 #include "../include/lustre_sec.h"
  51
  52 #include "ptlrpc_internal.h"
  53
  54 static char *sec_flags2str(unsigned long flags, char *buf, int bufsize)
  55 {
  56         buf[0] = '\0';
  57
  58         if (flags & PTLRPC_SEC_FL_REVERSE)
  59                 strlcat(buf, "reverse,", bufsize);
  60         if (flags & PTLRPC_SEC_FL_ROOTONLY)
  61                 strlcat(buf, "rootonly,", bufsize);
  62         if (flags & PTLRPC_SEC_FL_UDESC)
  63                 strlcat(buf, "udesc,", bufsize);
  64         if (flags & PTLRPC_SEC_FL_BULK)
  65                 strlcat(buf, "bulk,", bufsize);
  66         if (buf[0] == '\0')
  67                 strlcat(buf, "-,", bufsize);
  68
  69         return buf;
  70 }
  71
  72 static int sptlrpc_info_lprocfs_seq_show(struct seq_file *seq, void *v)
  73 {
  74         struct obd_device *dev = seq->private;
  75         struct client_obd *cli = &dev->u.cli;
  76         struct ptlrpc_sec *sec = NULL;
  77         char str[32];
  78
  79         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
  80                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
  81                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
  82
  83         if (cli->cl_import)
  84                 sec = sptlrpc_import_sec_ref(cli->cl_import);
  85         if (sec == NULL)
  86                 goto out;
  87
  88         sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str));
  89
  90         seq_printf(seq, "rpc flavor:    %s\n",
  91                    sptlrpc_flavor2name_base(sec->ps_flvr.sf_rpc));
  92         seq_printf(seq, "bulk flavor:   %s\n",
  93                    sptlrpc_flavor2name_bulk(&sec->ps_flvr, str, sizeof(str)));
  94         seq_printf(seq, "flags:  %s\n",
  95                    sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str)));
  96         seq_printf(seq, "id:        %d\n", sec->ps_id);
  97         seq_printf(seq, "refcount:      %d\n",
  98                    atomic_read(&sec->ps_refcount));
  99         seq_printf(seq, "nctx:    %d\n", atomic_read(&sec->ps_nctx));
 100         seq_printf(seq, "gc internal    %ld\n", sec->ps_gc_interval);
 101         seq_printf(seq, "gc next        %lld\n",
 102                    sec->ps_gc_interval ?
 103                    (s64)(sec->ps_gc_next - ktime_get_real_seconds()) : 0ll);
 104
 105         sptlrpc_sec_put(sec);
 106 out:
 107         return 0;
 108 }
 109
 110 LPROC_SEQ_FOPS_RO(sptlrpc_info_lprocfs);
 111
 112 static int sptlrpc_ctxs_lprocfs_seq_show(struct seq_file *seq, void *v)
 113 {
 114         struct obd_device *dev = seq->private;
 115         struct client_obd *cli = &dev->u.cli;
 116         struct ptlrpc_sec *sec = NULL;
 117
 118         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
 119                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
 120                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
 121
 122         if (cli->cl_import)
 123                 sec = sptlrpc_import_sec_ref(cli->cl_import);
 124         if (sec == NULL)
 125                 goto out;
 126
 127         if (sec->ps_policy->sp_cops->display)
 128                 sec->ps_policy->sp_cops->display(sec, seq);
 129
 130         sptlrpc_sec_put(sec);
 131 out:
 132         return 0;
 133 }
 134
 135 LPROC_SEQ_FOPS_RO(sptlrpc_ctxs_lprocfs);
 136
 137 int sptlrpc_lprocfs_cliobd_attach(struct obd_device *dev)
 138 {
 139         int rc;
 140
 141         if (strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) != 0 &&
 142             strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) != 0 &&
 143             strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) != 0) {
 144                 CERROR("can't register lproc for obd type %s\n",
 145                        dev->obd_type->typ_name);
 146                 return -EINVAL;
 147         }
 148
 149         rc = ldebugfs_obd_seq_create(dev, "srpc_info", 0444,
 150                                      &sptlrpc_info_lprocfs_fops, dev);
 151         if (rc) {
 152                 CERROR("create proc entry srpc_info for %s: %d\n",
 153                        dev->obd_name, rc);
 154                 return rc;
 155         }
 156
 157         rc = ldebugfs_obd_seq_create(dev, "srpc_contexts", 0444,
 158                                      &sptlrpc_ctxs_lprocfs_fops, dev);
 159         if (rc) {
 160                 CERROR("create proc entry srpc_contexts for %s: %d\n",
 161                        dev->obd_name, rc);
 162                 return rc;
 163         }
 164
 165         return 0;
 166 }
 167 EXPORT_SYMBOL(sptlrpc_lprocfs_cliobd_attach);
 168
 169 LPROC_SEQ_FOPS_RO(sptlrpc_proc_enc_pool);
 170 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
 171         { "encrypt_page_pools", &sptlrpc_proc_enc_pool_fops },
 172         { NULL }
 173 };
 174
 175 static struct dentry *sptlrpc_debugfs_dir;
 176
 177 int sptlrpc_lproc_init(void)
 178 {
 179         int rc;
 180
 181         LASSERT(sptlrpc_debugfs_dir == NULL);
 182
 183         sptlrpc_debugfs_dir = ldebugfs_register("sptlrpc", debugfs_lustre_root,
 184                                                 sptlrpc_lprocfs_vars, NULL);
 185         if (IS_ERR_OR_NULL(sptlrpc_debugfs_dir)) {
 186                 rc = sptlrpc_debugfs_dir ? PTR_ERR(sptlrpc_debugfs_dir)
 187                                          : -ENOMEM;
 188                 sptlrpc_debugfs_dir = NULL;
 189                 return rc;
 190         }
 191         return 0;
 192 }
 193
 194 void sptlrpc_lproc_fini(void)
 195 {
 196         if (!IS_ERR_OR_NULL(sptlrpc_debugfs_dir))
 197                 ldebugfs_remove(&sptlrpc_debugfs_dir);
 198 }