sbin/iscontrol/iscontrol.c

   1 /*-
   2  * Copyright (c) 2005-2008 Daniel Braniss <danny@cs.huji.ac.il>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27 /*
  28  | $Id: iscontrol.c,v 2.2 2006/12/01 09:11:56 danny Exp danny $
  29  */
  30 /*
  31  | the user level initiator (client)
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/socket.h>
  37 #include <sys/sysctl.h>
  38 #include <sys/module.h>
  39 #include <sys/linker.h>
  40
  41 #include <netinet/in.h>
  42 #include <netinet/tcp.h>
  43 #include <arpa/inet.h>
  44 #include <sys/ioctl.h>
  45 #include <netdb.h>
  46 #include <stdlib.h>
  47 #include <unistd.h>
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <fcntl.h>
  52 #include <time.h>
  53 #include <camlib.h>
  54
  55 #include "iscsi.h"
  56 #include "iscontrol.h"
  57
  58 #define USAGE "[-dv] [-c file] [-n nickname] [-t target] [variable=value ...]"
  59 #define OPTIONS "vdc:t:n:"
  60
  61 #ifndef DEBUG
  62 //int   vflag;
  63 #endif
  64
  65 token_t AuthMethods[] = {
  66      {"None",   NONE},
  67      {"KRB5",   KRB5},
  68      {"SPKM1",  SPKM1},
  69      {"SPKM2",  SPKM2},
  70      {"SRP",    SRP},
  71      {"CHAP",   CHAP},
  72      {0, 0}
  73 };
  74
  75 token_t DigestMethods[] = {
  76      {"None",   0},
  77      {"CRC32",  1},
  78      {"CRC32C", 1},
  79      {0, 0}
  80 };
  81
  82 u_char  isid[6 + 6];
  83 /*
  84  | Default values
  85  */
  86 isc_opt_t opvals = {
  87      .port                      = 3260,
  88      .sockbufsize               = 128,
  89      .iqn                       = "iqn.2005-01.il.ac.huji.cs:",
  90
  91      .sessionType               = "Normal",
  92      .targetAddress             = 0,
  93      .targetName                = 0,
  94      .initiatorName             = 0,
  95      .authMethod                = "None",
  96      .headerDigest              = "None,CRC32C",
  97      .dataDigest                = "None,CRC32C",
  98      .maxConnections            = 1,
  99      .maxRecvDataSegmentLength  = 64 * 1024,
 100      .maxXmitDataSegmentLength  = 8 * 1024, // 64 * 1024,
 101      .maxBurstLength            = 128 * 1024,
 102      .firstBurstLength          = 64 * 1024, // must be less than maxBurstLength
 103      .defaultTime2Wait          = 0,
 104      .defaultTime2Retain        = 0,
 105      .maxOutstandingR2T         = 1,
 106      .errorRecoveryLevel        = 0,
 107
 108      .dataPDUInOrder            = TRUE,
 109      .dataSequenceInOrder       = TRUE,
 110
 111      .initialR2T                = TRUE,
 112      .immediateData             = TRUE,
 113 };
 114
 115 int
 116 lookup(token_t *tbl, char *m)
 117 {
 118      token_t    *tp;
 119
 120      for(tp = tbl; tp->name != NULL; tp++)
 121           if(strcasecmp(tp->name, m) == 0)
 122                return tp->val;
 123      return 0;
 124 }
 125
 126 int
 127 main(int cc, char **vv)
 128 {
 129      int        ch, disco;
 130      char       *pname, *p, *q, *ta, *kw;
 131      isc_opt_t  *op;
 132      FILE       *fd;
 133
 134      /* Try to load iscsi_initiator module before starting its operation */
 135      if (modfind(INITIATORMOD) < 0) {
 136              if (kldload(INITIATORMOD) < 0 || modfind(INITIATORMOD) < 0) {
 137                      perror(INITIATORMOD ": Error while handling kernel module");
 138                      return 1;
 139              }
 140      }
 141
 142      op = &opvals;
 143      iscsidev = "/dev/"ISCSIDEV;
 144      fd = NULL;
 145      pname = vv[0];
 146      if((p = strrchr(pname, '/')) != NULL)
 147           pname = p + 1;
 148
 149      kw = ta = NULL;
 150      disco = 0;
 151
 152      while((ch = getopt(cc, vv, OPTIONS)) != -1) {
 153           switch(ch) {
 154           case 'v':
 155                vflag++;
 156                break;
 157           case 'c':
 158                fd = fopen(optarg, "r");
 159                if(fd == NULL) {
 160                     perror(optarg);
 161                     exit(1);
 162                }
 163                break;
 164           case 'd':
 165                disco = 1;
 166                break;
 167           case 't':
 168                ta = optarg;
 169                break;
 170           case 'n':
 171                kw = optarg;
 172                break;
 173           default:
 174           badu:
 175                fprintf(stderr, "Usage: %s %s\n", pname, USAGE);
 176                exit(1);
 177           }
 178      }
 179      if(fd == NULL)
 180           fd = fopen("/etc/iscsi.conf", "r");
 181
 182      if(fd != NULL) {
 183           parseConfig(fd, kw, op);
 184           fclose(fd);
 185      }
 186      cc -= optind;
 187      vv += optind;
 188      if(cc > 0) {
 189           if(vflag)
 190                printf("adding '%s'\n", *vv);
 191           parseArgs(cc, vv, op);
 192      }
 193      if(ta)
 194           op->targetAddress = ta;
 195
 196      if(op->targetAddress == NULL) {
 197           fprintf(stderr, "No target!\n");
 198           goto badu;
 199      }
 200      q = op->targetAddress;
 201      if(*q == '[' && (q = strchr(q, ']')) != NULL) {
 202           *q++ = '\0';
 203           op->targetAddress++;
 204      } else
 205           q = op->targetAddress;
 206      if((p = strchr(q, ':')) != NULL) {
 207           *p++ = 0;
 208           op->port = atoi(p);
 209           p = strchr(p, ',');
 210      }
 211      if(p || ((p = strchr(q, ',')) != NULL)) {
 212           *p++ = 0;
 213           op->targetPortalGroupTag = atoi(p);
 214      }
 215      if(op->initiatorName == 0) {
 216           char  hostname[256];
 217
 218           if(op->iqn) {
 219                if(gethostname(hostname, sizeof(hostname)) == 0)
 220                     asprintf(&op->initiatorName, "%s:%s", op->iqn, hostname);
 221                else
 222                     asprintf(&op->initiatorName, "%s:%d", op->iqn, (int)time(0) & 0xff); // XXX:
 223           }
 224           else {
 225                if(gethostname(hostname, sizeof(hostname)) == 0)
 226                     asprintf(&op->initiatorName, "%s", hostname);
 227                else
 228                     asprintf(&op->initiatorName, "%d", (int)time(0) & 0xff); // XXX:
 229           }
 230      }
 231      if(disco) {
 232           op->sessionType = "Discovery";
 233           op->targetName = 0;
 234      }
 235
 236      fsm(op);
 237
 238      exit(0);
 239 }