lnet/utils/lstclient.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  * lnet/selftest/conctl.c
  35  *
  36  * Author: Liang Zhen <liangzhen@clusterfs.com>
  37  */
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <getopt.h>
  42 #include <errno.h>
  43 #include <pwd.h>
  44 #include <lnet/lnetctl.h>
  45 #include <lnet/lnetst.h>
  46 #include "../selftest/rpc.h"
  47 #include "../selftest/selftest.h"
  48
  49 static int lstjn_stopping = 0;
  50 static int lstjn_intialized = 0;
  51
  52
  53 static struct option lstjn_options[] =
  54 {
  55         {"sesid",       required_argument,  0, 's' },
  56         {"group",       required_argument,  0, 'g' },
  57         {"features",    required_argument,  0, 'f' },
  58         {"server_mode", no_argument,        0, 'm' },
  59         {0,             0,                  0,  0  }
  60 };
  61
  62 void
  63 lstjn_stop (int sig)
  64 {
  65         lstjn_stopping = 1;
  66 }
  67
  68 void
  69 lstjn_rpc_done(srpc_client_rpc_t *rpc)
  70 {
  71         if (!lstjn_intialized)
  72                 lstjn_intialized = 1;
  73 }
  74
  75 int
  76 lstjn_join_session(char *ses, char *grp, unsigned feats)
  77 {
  78         lnet_process_id_t  sesid;
  79         srpc_client_rpc_t *rpc;
  80         srpc_join_reqst_t *req;
  81         srpc_join_reply_t *rep;
  82         srpc_mksn_reqst_t *sreq;
  83         srpc_mksn_reply_t *srep;
  84         int                rc;
  85
  86         sesid.pid = LUSTRE_LNET_PID;
  87         sesid.nid = libcfs_str2nid(ses);
  88         if (sesid.nid == LNET_NID_ANY) {
  89                 fprintf(stderr, "Invalid session NID: %s\n", ses);
  90                 return -1;
  91         }
  92
  93         rpc = sfw_create_rpc(sesid, SRPC_SERVICE_JOIN, feats,
  94                              0, 0, lstjn_rpc_done, NULL);
  95         if (rpc == NULL) {
  96                 fprintf(stderr, "Out of memory\n");
  97                 return -1;
  98         }
  99
 100         req = &rpc->crpc_reqstmsg.msg_body.join_reqst;
 101
 102         req->join_sid = LST_INVALID_SID;
 103         strncpy(req->join_group, grp, LST_NAME_SIZE);
 104
 105         sfw_post_rpc(rpc);
 106
 107         for (;;) {
 108                 rc = selftest_wait_events();
 109
 110                 if (lstjn_intialized)
 111                         break;
 112         }
 113
 114         if (rpc->crpc_status != 0) {
 115                 fprintf(stderr, "Failed to send RPC to console: %s\n",
 116                         strerror(rpc->crpc_status));
 117                 srpc_client_rpc_decref(rpc);
 118                 return -1;
 119         }
 120
 121         sfw_unpack_message(&rpc->crpc_replymsg);
 122
 123         rep = &rpc->crpc_replymsg.msg_body.join_reply;
 124         if (rep->join_status != 0) {
 125                 fprintf(stderr, "Can't join session %s group %s: %s\n",
 126                         ses, grp, strerror(rep->join_status));
 127                 srpc_client_rpc_decref(rpc);
 128                 return -1;
 129         }
 130
 131         if (rpc->crpc_replymsg.msg_ses_feats != feats) {
 132                 /* this can only happen when connecting to old console
 133                  * which will ignore features */
 134                 fprintf(stderr, "Can't join session %s group %s because "
 135                         "feature bits can't match: %x/%x, please set "
 136                         "feature bits by -f FEATURES and retry\n",
 137                         ses, grp, feats, rpc->crpc_replymsg.msg_ses_feats);
 138                 srpc_client_rpc_decref(rpc);
 139                 return -1;
 140         }
 141
 142         sreq = &rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 143         sreq->mksn_sid     = rep->join_sid;
 144         sreq->mksn_force   = 0;
 145         strcpy(sreq->mksn_name, rep->join_session);
 146
 147         srep = &rpc->crpc_replymsg.msg_body.mksn_reply;
 148
 149         rc = sfw_make_session(sreq, srep);
 150         if (rc != 0 || srep->mksn_status != 0) {
 151                 fprintf(stderr, "Can't create session: %d, %s\n",
 152                         rc, strerror(srep->mksn_status));
 153                 srpc_client_rpc_decref(rpc);
 154                 return -1;
 155         }
 156
 157         fprintf(stdout, "Session %s, ID: %s, "LPU64"\n",
 158                 ses, libcfs_nid2str(rep->join_sid.ses_nid),
 159                 rep->join_sid.ses_stamp);
 160
 161         srpc_client_rpc_decref(rpc);
 162
 163         return 0;
 164 }
 165
 166 int
 167 main(int argc, char **argv)
 168 {
 169         char    *ses = NULL;
 170         char    *grp = NULL;
 171         unsigned feats = LST_FEATS_MASK;
 172         int      server_mode_flag = 0;
 173         int      optidx;
 174         int      c;
 175         int      rc;
 176
 177         const char *usage_string =
 178                    "Usage: lstclient --sesid ID --group GROUP "
 179                    "--features FEATURES [--server_mode]\n";
 180
 181         while (1) {
 182                 c = getopt_long(argc, argv, "s:g:f:m",
 183                                 lstjn_options, &optidx);
 184
 185                 if (c == -1)
 186                         break;
 187
 188                 switch (c) {
 189                 case 's':
 190                         ses = optarg;
 191                         break;
 192                 case 'g':
 193                         grp = optarg;
 194                         break;
 195                 case 'f':
 196                         feats = strtol(optarg, NULL, 16);
 197                         break;
 198
 199                 case 'm':
 200                         server_mode_flag = 1;
 201                         break;
 202                 default:
 203                         fprintf(stderr, "%s", usage_string);
 204                         return -1;
 205                 }
 206         }
 207
 208         if (optind != argc || grp == NULL || ses == NULL) {
 209                 fprintf(stderr, "%s", usage_string);
 210                 return -1;
 211         }
 212
 213         if ((feats & ~LST_FEATS_MASK) != 0) {
 214                 fprintf(stderr,
 215                         "lstclient can't understand these feature bits: %x\n",
 216                         (feats & ~LST_FEATS_MASK));
 217                 return -1;
 218         }
 219
 220         rc = libcfs_debug_init(5 * 1024 * 1024);
 221         if (rc != 0) {
 222                 fprintf(stderr, "libcfs_debug_init() failed: %d\n", rc);
 223                 return -1;
 224         }
 225
 226         rc = cfs_wi_startup();
 227         if (rc != 0) {
 228                 fprintf(stderr, "cfs_wi_startup() failed: %d\n", rc);
 229                 libcfs_debug_cleanup();
 230                 return -1;
 231         }
 232
 233         rc = LNetInit();
 234         if (rc != 0) {
 235                 fprintf(stderr, "LNetInit() failed: %d\n", rc);
 236                 cfs_wi_shutdown();
 237                 libcfs_debug_cleanup();
 238                 return -1;
 239         }
 240
 241         if (server_mode_flag)
 242                 lnet_server_mode();
 243
 244         rc = lnet_selftest_init();
 245         if (rc != 0) {
 246                 fprintf(stderr, "Can't startup selftest\n");
 247                 LNetFini();
 248                 cfs_wi_shutdown();
 249                 libcfs_debug_cleanup();
 250                 return -1;
 251         }
 252
 253         rc = lstjn_join_session(ses, grp, feats);
 254         if (rc != 0)
 255                 goto out;
 256
 257         signal(SIGINT, lstjn_stop);
 258
 259         fprintf(stdout, "Start handling selftest requests, Ctl-C to stop\n");
 260
 261         while (!lstjn_stopping) {
 262                 selftest_wait_events();
 263
 264                 if (!sfw_session_removed())
 265                         continue;
 266
 267                 fprintf(stdout, "Session ended\n");
 268                 break;
 269         }
 270
 271 out:
 272         lnet_selftest_fini();
 273
 274         LNetFini();
 275
 276         cfs_wi_shutdown();
 277
 278         libcfs_debug_cleanup();
 279
 280         return rc;
 281 }