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  *   Author: Eric Mei <ericm@clusterfs.com>
   6  *
   7  *   This file is part of Lustre, http://www.lustre.org.
   8  *
   9  *   Lustre is free software; you can redistribute it and/or
  10  *   modify it under the terms of version 2 of the GNU General Public
  11  *   License as published by the Free Software Foundation.
  12  *
  13  *   Lustre is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with Lustre; if not, write to the Free Software
  20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifndef EXPORT_SYMTAB
  24 #define EXPORT_SYMTAB
  25 #endif
  26 #define DEBUG_SUBSYSTEM S_SEC
  27
  28 #include <libcfs/libcfs.h>
  29 #ifndef __KERNEL__
  30 #include <liblustre.h>
  31 #include <libcfs/list.h>
  32 #else
  33 #include <linux/crypto.h>
  34 #endif
  35
  36 #include <obd.h>
  37 #include <obd_class.h>
  38 #include <obd_support.h>
  39 #include <lustre_net.h>
  40 #include <lustre_import.h>
  41 #include <lustre_dlm.h>
  42 #include <lustre_sec.h>
  43
  44 #include "ptlrpc_internal.h"
  45
  46 #ifdef __KERNEL__
  47
  48 struct proc_dir_entry *sptlrpc_proc_root = NULL;
  49 EXPORT_SYMBOL(sptlrpc_proc_root);
  50
  51 void sec_flags2str(unsigned long flags, char *buf, int bufsize)
  52 {
  53         buf[0] = '\0';
  54
  55         if (flags & PTLRPC_SEC_FL_REVERSE)
  56                 strncat(buf, "reverse,", bufsize);
  57         if (flags & PTLRPC_SEC_FL_ROOTONLY)
  58                 strncat(buf, "rootonly,", bufsize);
  59         if (flags & PTLRPC_SEC_FL_BULK)
  60                 strncat(buf, "bulk,", bufsize);
  61         if (buf[0] == '\0')
  62                 strncat(buf, "-,", bufsize);
  63
  64         buf[strlen(buf) - 1] = '\0';
  65
  66 }
  67
  68 int sptlrpc_lprocfs_rd(char *page, char **start, off_t off, int count,
  69                        int *eof, void *data)
  70 {
  71         struct obd_device        *obd = data;
  72         struct sec_flavor_config *conf = &obd->u.cli.cl_sec_conf;
  73         struct ptlrpc_sec        *sec = NULL;
  74         char                      flags_str[32];
  75         int                       written;
  76
  77         if (obd == NULL)
  78                 return 0;
  79
  80         LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
  81                 strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
  82                 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME) == 0);
  83         LASSERT(conf->sfc_bulk_csum < BULK_CSUM_ALG_MAX);
  84         LASSERT(conf->sfc_bulk_priv < BULK_PRIV_ALG_MAX);
  85
  86         if (obd->u.cli.cl_import)
  87                 sec = obd->u.cli.cl_import->imp_sec;
  88
  89         if (sec == NULL) {
  90                 written = snprintf(page, count, "\n");
  91                 goto out;
  92         }
  93
  94         sec_flags2str(sec->ps_flags, flags_str, sizeof(flags_str));
  95
  96         written = snprintf(page, count,
  97                         "rpc msg flavor:        %s\n"
  98                         "bulk checksum:         %s\n"
  99                         "bulk encrypt:          %s\n"
 100                         "flags:                 %s\n"
 101                         "ctx cache busy         %d\n"
 102                         "gc interval            %lu\n"
 103                         "gc next                %ld\n",
 104                         sptlrpc_flavor2name(sec->ps_flavor),
 105                         sptlrpc_bulk_csum_alg2name(conf->sfc_bulk_csum),
 106                         sptlrpc_bulk_priv_alg2name(conf->sfc_bulk_priv),
 107                         flags_str,
 108                         atomic_read(&sec->ps_busy),
 109                         sec->ps_gc_interval,
 110                         sec->ps_gc_interval ?
 111                                 sec->ps_gc_next - cfs_time_current_sec() : 0
 112                           );
 113
 114         if (sec->ps_policy->sp_cops->display) {
 115                 written += sec->ps_policy->sp_cops->display(
 116                                         sec, page + written, count - written);
 117         }
 118
 119 out:
 120         return written;
 121 }
 122 EXPORT_SYMBOL(sptlrpc_lprocfs_rd);
 123
 124 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
 125         { "enc_pool", sptlrpc_proc_read_enc_pool, NULL, NULL },
 126         { NULL }
 127 };
 128
 129 int sptlrpc_lproc_init(void)
 130 {
 131         int     rc;
 132
 133         LASSERT(sptlrpc_proc_root == NULL);
 134
 135         sptlrpc_proc_root = lprocfs_register("sptlrpc", proc_lustre_root,
 136                                              sptlrpc_lprocfs_vars, NULL);
 137         if (IS_ERR(sptlrpc_proc_root)) {
 138                 rc = PTR_ERR(sptlrpc_proc_root);
 139                 sptlrpc_proc_root = NULL;
 140                 return rc;
 141         }
 142         return 0;
 143 }
 144
 145 void sptlrpc_lproc_fini(void)
 146 {
 147         if (sptlrpc_proc_root) {
 148                 lprocfs_remove(&sptlrpc_proc_root);
 149                 sptlrpc_proc_root = NULL;
 150         }
 151 }
 152
 153 #else /* !__KERNEL__ */
 154
 155 int sptlrpc_lproc_init(void)
 156 {
 157         return 0;
 158 }
 159
 160 void sptlrpc_lproc_fini(void)
 161 {
 162 }
 163
 164 #endif