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  * Copyright (c) 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/selftest/conctl.c
  37  *
  38  * Author: Liang Zhen <liangzhen@clusterfs.com>
  39  */
  40
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <getopt.h>
  44 #include <errno.h>
  45 #include <pwd.h>
  46 #include <lnet/lnetctl.h>
  47 #include <lnet/lnetst.h>
  48 #include "../selftest/rpc.h"
  49 #include "../selftest/selftest.h"
  50
  51 static int lstjn_stopping = 0;
  52 static int lstjn_intialized = 0;
  53
  54
  55 static struct option lstjn_options[] =
  56 {
  57         {"sesid",       required_argument,  0, 's' },
  58         {"group",       required_argument,  0, 'g' },
  59         {"features",    required_argument,  0, 'f' },
  60         {"server_mode", no_argument,        0, 'm' },
  61         {0,             0,                  0,  0  }
  62 };
  63
  64 void
  65 lstjn_stop (int sig)
  66 {
  67         lstjn_stopping = 1;
  68 }
  69
  70 void
  71 lstjn_rpc_done(srpc_client_rpc_t *rpc)
  72 {
  73         if (!lstjn_intialized)
  74                 lstjn_intialized = 1;
  75 }
  76
  77 int
  78 lstjn_join_session(char *ses, char *grp, unsigned feats)
  79 {
  80         lnet_process_id_t  sesid;
  81         srpc_client_rpc_t *rpc;
  82         srpc_join_reqst_t *req;
  83         srpc_join_reply_t *rep;
  84         srpc_mksn_reqst_t *sreq;
  85         srpc_mksn_reply_t *srep;
  86         int                rc;
  87
  88         sesid.pid = LUSTRE_LNET_PID;
  89         sesid.nid = libcfs_str2nid(ses);
  90         if (sesid.nid == LNET_NID_ANY) {
  91                 fprintf(stderr, "Invalid session NID: %s\n", ses);
  92                 return -1;
  93         }
  94
  95         rpc = sfw_create_rpc(sesid, SRPC_SERVICE_JOIN, feats,
  96                              0, 0, lstjn_rpc_done, NULL);
  97         if (rpc == NULL) {
  98                 fprintf(stderr, "Out of memory\n");
  99                 return -1;
 100         }
 101
 102         req = &rpc->crpc_reqstmsg.msg_body.join_reqst;
 103
 104         req->join_sid = LST_INVALID_SID;
 105         strncpy(req->join_group, grp, LST_NAME_SIZE);
 106
 107         sfw_post_rpc(rpc);
 108
 109         for (;;) {
 110                 rc = selftest_wait_events();
 111
 112                 if (lstjn_intialized)
 113                         break;
 114         }
 115
 116         if (rpc->crpc_status != 0) {
 117                 fprintf(stderr, "Failed to send RPC to console: %s\n",
 118                         strerror(rpc->crpc_status));
 119                 srpc_client_rpc_decref(rpc);
 120                 return -1;
 121         }
 122
 123         sfw_unpack_message(&rpc->crpc_replymsg);
 124
 125         rep = &rpc->crpc_replymsg.msg_body.join_reply;
 126         if (rep->join_status != 0) {
 127                 fprintf(stderr, "Can't join session %s group %s: %s\n",
 128                         ses, grp, strerror(rep->join_status));
 129                 srpc_client_rpc_decref(rpc);
 130                 return -1;
 131         }
 132
 133         if (rpc->crpc_replymsg.msg_ses_feats != feats) {
 134                 /* this can only happen when connecting to old console
 135                  * which will ignore features */
 136                 fprintf(stderr, "Can't join session %s group %s because "
 137                         "feature bits can't match: %x/%x, please set "
 138                         "feature bits by -f FEATURES and retry\n",
 139                         ses, grp, feats, rpc->crpc_replymsg.msg_ses_feats);
 140                 srpc_client_rpc_decref(rpc);
 141                 return -1;
 142         }
 143
 144         sreq = &rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 145         sreq->mksn_sid     = rep->join_sid;
 146         sreq->mksn_force   = 0;
 147         strcpy(sreq->mksn_name, rep->join_session);
 148
 149         srep = &rpc->crpc_replymsg.msg_body.mksn_reply;
 150
 151         rc = sfw_make_session(sreq, srep);
 152         if (rc != 0 || srep->mksn_status != 0) {
 153                 fprintf(stderr, "Can't create session: %d, %s\n",
 154                         rc, strerror(srep->mksn_status));
 155                 srpc_client_rpc_decref(rpc);
 156                 return -1;
 157         }
 158
 159         fprintf(stdout, "Session %s, ID: %s, "LPU64"\n",
 160                 ses, libcfs_nid2str(rep->join_sid.ses_nid),
 161                 rep->join_sid.ses_stamp);
 162
 163         srpc_client_rpc_decref(rpc);
 164
 165         return 0;
 166 }
 167
 168 int
 169 main(int argc, char **argv)
 170 {
 171         char    *ses = NULL;
 172         char    *grp = NULL;
 173         unsigned feats = LST_FEATS_MASK;
 174         int      server_mode_flag = 0;
 175         int      optidx;
 176         int      c;
 177         int      rc;
 178
 179         const char *usage_string =
 180                    "Usage: lstclient --sesid ID --group GROUP "
 181                    "--features FEATURES [--server_mode]\n";
 182
 183         while (1) {
 184                 c = getopt_long(argc, argv, "s:g:f:m",
 185                                 lstjn_options, &optidx);
 186
 187                 if (c == -1)
 188                         break;
 189
 190                 switch (c) {
 191                 case 's':
 192                         ses = optarg;
 193                         break;
 194                 case 'g':
 195                         grp = optarg;
 196                         break;
 197                 case 'f':
 198                         feats = strtol(optarg, NULL, 16);
 199                         break;
 200
 201                 case 'm':
 202                         server_mode_flag = 1;
 203                         break;
 204                 default:
 205                         fprintf(stderr, "%s", usage_string);
 206                         return -1;
 207                 }
 208         }
 209
 210         if (optind != argc || grp == NULL || ses == NULL) {
 211                 fprintf(stderr, "%s", usage_string);
 212                 return -1;
 213         }
 214
 215         if ((feats & ~LST_FEATS_MASK) != 0) {
 216                 fprintf(stderr,
 217                         "lstclient can't understand these feature bits: %x\n",
 218                         (feats & ~LST_FEATS_MASK));
 219                 return -1;
 220         }
 221
 222         rc = libcfs_debug_init(5 * 1024 * 1024);
 223         if (rc != 0) {
 224                 fprintf(stderr, "libcfs_debug_init() failed: %d\n", rc);
 225                 return -1;
 226         }
 227
 228         rc = cfs_wi_startup();
 229         if (rc != 0) {
 230                 fprintf(stderr, "cfs_wi_startup() failed: %d\n", rc);
 231                 libcfs_debug_cleanup();
 232                 return -1;
 233         }
 234
 235         rc = LNetInit();
 236         if (rc != 0) {
 237                 fprintf(stderr, "LNetInit() failed: %d\n", rc);
 238                 cfs_wi_shutdown();
 239                 libcfs_debug_cleanup();
 240                 return -1;
 241         }
 242
 243         if (server_mode_flag)
 244                 lnet_server_mode();
 245
 246         rc = lnet_selftest_init();
 247         if (rc != 0) {
 248                 fprintf(stderr, "Can't startup selftest\n");
 249                 LNetFini();
 250                 cfs_wi_shutdown();
 251                 libcfs_debug_cleanup();
 252                 return -1;
 253         }
 254
 255         rc = lstjn_join_session(ses, grp, feats);
 256         if (rc != 0)
 257                 goto out;
 258
 259         signal(SIGINT, lstjn_stop);
 260
 261         fprintf(stdout, "Start handling selftest requests, Ctl-C to stop\n");
 262
 263         while (!lstjn_stopping) {
 264                 selftest_wait_events();
 265
 266                 if (!sfw_session_removed())
 267                         continue;
 268
 269                 fprintf(stdout, "Session ended\n");
 270                 break;
 271         }
 272
 273 out:
 274         lnet_selftest_fini();
 275
 276         LNetFini();
 277
 278         cfs_wi_shutdown();
 279
 280         libcfs_debug_cleanup();
 281
 282         return rc;
 283 }