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 (flags & PTLRPC_SEC_FL_PAG)
  61                 strncat(buf, "pag,", bufsize);
  62         if (buf[0] == '\0')
  63                 strncat(buf, "-,", bufsize);
  64
  65         buf[strlen(buf) - 1] = '\0';
  66
  67 }
  68
  69 int sptlrpc_lprocfs_rd(char *page, char **start, off_t off, int count,
  70                        int *eof, void *data)
  71 {
  72         struct obd_device        *obd = data;
  73         struct sec_flavor_config *conf = &obd->u.cli.cl_sec_conf;
  74         struct ptlrpc_sec        *sec = NULL;
  75         struct ptlrpc_cli_ctx    *ctx;
  76         struct hlist_node        *pos, *next;
  77         char                      flags_str[32];
  78         int                       written, i;
  79
  80         if (obd == NULL)
  81                 return 0;
  82
  83         LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
  84                 strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
  85                 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
  86         LASSERT(conf->sfc_bulk_csum < BULK_CSUM_ALG_MAX);
  87         LASSERT(conf->sfc_bulk_priv < BULK_PRIV_ALG_MAX);
  88
  89         if (obd->u.cli.cl_import)
  90                 sec = obd->u.cli.cl_import->imp_sec;
  91
  92         if (sec == NULL) {
  93                 written = snprintf(page, count, "\n");
  94                 goto out;
  95         }
  96
  97         sec_flags2str(sec->ps_flags, flags_str, sizeof(flags_str));
  98
  99         written = snprintf(page, count,
 100                         "rpc msg flavor:        %s\n"
 101                         "bulk checksum:         %s\n"
 102                         "bulk encrypt:          %s\n"
 103                         "flags:                 %s\n"
 104                         "ctx cache size         %u\n"
 105                         "ctx cache busy         %d\n"
 106                         "gc interval            %lu\n"
 107                         "gc next                %ld\n",
 108                         sptlrpc_flavor2name(sec->ps_flavor),
 109                         sptlrpc_bulk_csum_alg2name(conf->sfc_bulk_csum),
 110                         sptlrpc_bulk_priv_alg2name(conf->sfc_bulk_priv),
 111                         flags_str,
 112                         sec->ps_ccache_size,
 113                         atomic_read(&sec->ps_busy),
 114                         sec->ps_gc_interval,
 115                         sec->ps_gc_interval ?
 116                                 sec->ps_gc_next - cfs_time_current_sec() : 0
 117                           );
 118         /*
 119          * list contexts
 120          */
 121         if (sec->ps_policy->sp_policy != SPTLRPC_POLICY_GSS)
 122                 goto out;
 123
 124         written += snprintf(page + written, count - written,
 125                             "GSS contexts ==>\n");
 126
 127         spin_lock(&sec->ps_lock);
 128         for (i = 0; i < sec->ps_ccache_size; i++) {
 129                 hlist_for_each_entry_safe(ctx, pos, next,
 130                                           &sec->ps_ccache[i], cc_hash) {
 131                         if (written >= count)
 132                                 break;
 133                         written += sptlrpc_ctx_display(ctx, page + written,
 134                                                        count - written);
 135                 }
 136         }
 137         spin_unlock(&sec->ps_lock);
 138
 139 out:
 140         return written;
 141 }
 142 EXPORT_SYMBOL(sptlrpc_lprocfs_rd);
 143
 144 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
 145         { "enc_pool", sptlrpc_proc_read_enc_pool, NULL, NULL },
 146         { NULL }
 147 };
 148
 149 int sptlrpc_lproc_init(void)
 150 {
 151         int     rc;
 152
 153         LASSERT(sptlrpc_proc_root == NULL);
 154
 155         sptlrpc_proc_root = lprocfs_register("sptlrpc", proc_lustre_root,
 156                                              sptlrpc_lprocfs_vars, NULL);
 157         if (IS_ERR(sptlrpc_proc_root)) {
 158                 rc = PTR_ERR(sptlrpc_proc_root);
 159                 sptlrpc_proc_root = NULL;
 160                 return rc;
 161         }
 162         return 0;
 163 }
 164
 165 void sptlrpc_lproc_fini(void)
 166 {
 167         if (sptlrpc_proc_root) {
 168                 lprocfs_remove(sptlrpc_proc_root);
 169                 sptlrpc_proc_root = NULL;
 170         }
 171 }
 172
 173 #else /* !__KERNEL__ */
 174
 175 int sptlrpc_lproc_init(void)
 176 {
 177         return 0;
 178 }
 179
 180 void sptlrpc_lproc_fini(void)
 181 {
 182 }
 183
 184 #endif