lustre/ptlrpc/sec_lproc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2006 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   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.
  11  *
  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.
  16  *
  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.
  20  */
  21
  22 #ifndef EXPORT_SYMTAB
  23 #define EXPORT_SYMTAB
  24 #endif
  25 #define DEBUG_SUBSYSTEM S_SEC
  26
  27 #include <libcfs/libcfs.h>
  28 #ifndef __KERNEL__
  29 #include <liblustre.h>
  30 #include <libcfs/list.h>
  31 #else
  32 #include <linux/crypto.h>
  33 #endif
  34
  35 #include <obd.h>
  36 #include <obd_class.h>
  37 #include <obd_support.h>
  38 #include <lustre_net.h>
  39 #include <lustre_import.h>
  40 #include <lustre_dlm.h>
  41 #include <lustre_sec.h>
  42
  43 #include "ptlrpc_internal.h"
  44
  45 #ifdef __KERNEL__
  46
  47 struct proc_dir_entry *sptlrpc_proc_root = NULL;
  48 EXPORT_SYMBOL(sptlrpc_proc_root);
  49
  50 void sec_flags2str(unsigned long flags, char *buf, int bufsize)
  51 {
  52         buf[0] = '\0';
  53
  54         if (flags & PTLRPC_SEC_FL_REVERSE)
  55                 strncat(buf, "reverse,", bufsize);
  56         if (flags & PTLRPC_SEC_FL_ROOTONLY)
  57                 strncat(buf, "rootonly,", bufsize);
  58         if (flags & PTLRPC_SEC_FL_BULK)
  59                 strncat(buf, "bulk,", bufsize);
  60         if (buf[0] == '\0')
  61                 strncat(buf, "-,", bufsize);
  62
  63         buf[strlen(buf) - 1] = '\0';
  64
  65 }
  66
  67 int sptlrpc_lprocfs_rd(char *page, char **start, off_t off, int count,
  68                        int *eof, void *data)
  69 {
  70         struct obd_device        *obd = data;
  71         struct sec_flavor_config *conf = &obd->u.cli.cl_sec_conf;
  72         struct ptlrpc_sec        *sec = NULL;
  73         struct ptlrpc_cli_ctx    *ctx;
  74         struct hlist_node        *pos, *next;
  75         char                      flags_str[32];
  76         int                       written, i;
  77
  78         if (obd == NULL)
  79                 return 0;
  80
  81         LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
  82                 strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
  83                 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
  84         LASSERT(conf->sfc_bulk_csum < BULK_CSUM_ALG_MAX);
  85         LASSERT(conf->sfc_bulk_priv < BULK_PRIV_ALG_MAX);
  86
  87         if (obd->u.cli.cl_import)
  88                 sec = obd->u.cli.cl_import->imp_sec;
  89
  90         if (sec == NULL) {
  91                 written = snprintf(page, count, "\n");
  92                 goto out;
  93         }
  94
  95         sec_flags2str(sec->ps_flags, flags_str, sizeof(flags_str));
  96
  97         written = snprintf(page, count,
  98                         "rpc msg flavor:        %s\n"
  99                         "bulk checksum:         %s\n"
 100                         "bulk encrypt:          %s\n"
 101                         "flags:                 %s\n"
 102                         "ctx cache size         %u\n"
 103                         "ctx cache busy         %d\n"
 104                         "gc interval            %lu\n"
 105                         "gc next                %ld\n",
 106                         sptlrpc_flavor2name(sec->ps_flavor),
 107                         sptlrpc_bulk_csum_alg2name(conf->sfc_bulk_csum),
 108                         sptlrpc_bulk_priv_alg2name(conf->sfc_bulk_priv),
 109                         flags_str,
 110                         sec->ps_ccache_size,
 111                         atomic_read(&sec->ps_busy),
 112                         sec->ps_gc_interval,
 113                         sec->ps_gc_interval ?
 114                                 sec->ps_gc_next - cfs_time_current_sec() : 0
 115                           );
 116         /*
 117          * list contexts
 118          */
 119         if (sec->ps_policy->sp_policy != SPTLRPC_POLICY_GSS)
 120                 goto out;
 121
 122         written += snprintf(page + written, count - written,
 123                             "GSS contexts ==>\n");
 124
 125         spin_lock(&sec->ps_lock);
 126         for (i = 0; i < sec->ps_ccache_size; i++) {
 127                 hlist_for_each_entry_safe(ctx, pos, next,
 128                                           &sec->ps_ccache[i], cc_hash) {
 129                         if (written >= count)
 130                                 break;
 131                         written += sptlrpc_ctx_display(ctx, page + written,
 132                                                        count - written);
 133                 }
 134         }
 135         spin_unlock(&sec->ps_lock);
 136
 137 out:
 138         return written;
 139 }
 140 EXPORT_SYMBOL(sptlrpc_lprocfs_rd);
 141
 142 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
 143         { "enc_pool", sptlrpc_proc_read_enc_pool, NULL, NULL },
 144         { NULL }
 145 };
 146
 147 int sptlrpc_lproc_init(void)
 148 {
 149         int     rc;
 150
 151         LASSERT(sptlrpc_proc_root == NULL);
 152
 153         sptlrpc_proc_root = lprocfs_register("sptlrpc", proc_lustre_root,
 154                                              sptlrpc_lprocfs_vars, NULL);
 155         if (IS_ERR(sptlrpc_proc_root)) {
 156                 rc = PTR_ERR(sptlrpc_proc_root);
 157                 sptlrpc_proc_root = NULL;
 158                 return rc;
 159         }
 160         return 0;
 161 }
 162
 163 void sptlrpc_lproc_fini(void)
 164 {
 165         if (sptlrpc_proc_root) {
 166                 lprocfs_remove(&sptlrpc_proc_root);
 167                 sptlrpc_proc_root = NULL;
 168         }
 169 }
 170
 171 #else /* !__KERNEL__ */
 172
 173 int sptlrpc_lproc_init(void)
 174 {
 175         return 0;
 176 }
 177
 178 void sptlrpc_lproc_fini(void)
 179 {
 180 }
 181
 182 #endif