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/cdefs.h> 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/socket.h> 39 #include <sys/sysctl.h> 40 #include <sys/module.h> 41 #include <sys/linker.h> 42 43 #include <netinet/in.h> 44 #include <netinet/tcp.h> 45 #include <arpa/inet.h> 46 #include <sys/ioctl.h> 47 #include <netdb.h> 48 #include <stdlib.h> 49 #include <unistd.h> 50 #include <stdio.h> 51 #include <string.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <time.h> 55 #include <camlib.h> 56 57 #include "iscsi.h" 58 #include "iscontrol.h" 59 60 #define USAGE "[-v] [-d] [-c config] [-n name] [-t target] " 61 #define OPTIONS "vdc:t:n:" 62 63 #ifndef DEBUG 64 //int vflag; 65 #endif 66 67 token_t AuthMethods[] = { 68 {"None", NONE}, 69 {"KRB5", KRB5}, 70 {"SPKM1", SPKM1}, 71 {"SPKM2", SPKM2}, 72 {"SRP", SRP}, 73 {"CHAP", CHAP}, 74 {0, 0} 75 }; 76 77 token_t DigestMethods[] = { 78 {"None", 0}, 79 {"CRC32", 1}, 80 {"CRC32C", 1}, 81 {0, 0} 82 }; 83 84 u_char isid[6 + 6]; 85 /* 86 | Default values 87 */ 88 isc_opt_t opvals = { 89 .port = 3260, 90 .sockbufsize = 128, 91 .iqn = "iqn.2005-01.il.ac.huji.cs:", 92 93 .sessionType = "Normal", 94 .targetAddress = 0, 95 .targetName = 0, 96 .initiatorName = 0, 97 .authMethod = "None", 98 .headerDigest = "None,CRC32C", 99 .dataDigest = "None,CRC32C", 100 .maxConnections = 1, 101 .maxRecvDataSegmentLength = 64 * 1024, 102 .maxXmitDataSegmentLength = 8 * 1024, // 64 * 1024, 103 .maxBurstLength = 128 * 1024, 104 .firstBurstLength = 64 * 1024, // must be less than maxBurstLength 105 .defaultTime2Wait = 0, 106 .defaultTime2Retain = 0, 107 .maxOutstandingR2T = 1, 108 .errorRecoveryLevel = 0, 109 110 .dataPDUInOrder = TRUE, 111 .dataSequenceInOrder = TRUE, 112 113 .initialR2T = TRUE, 114 .immediateData = TRUE, 115 }; 116 117 int 118 lookup(token_t *tbl, char *m) 119 { 120 token_t *tp; 121 122 for(tp = tbl; tp->name != NULL; tp++) 123 if(strcasecmp(tp->name, m) == 0) 124 return tp->val; 125 return 0; 126 } 127 128 int 129 main(int cc, char **vv) 130 { 131 int ch, disco; 132 char *pname, *p, *q, *ta, *kw; 133 isc_opt_t *op; 134 FILE *fd; 135 136 /* Try to load iscsi_initiator module before starting its operation */ 137 if (modfind(INITIATORMOD) < 0) { 138 if (kldload(INITIATORMOD) < 0 || modfind(INITIATORMOD) < 0) { 139 perror(INITIATORMOD ": Error while handling kernel module"); 140 return 1; 141 } 142 } 143 144 op = &opvals; 145 iscsidev = "/dev/"ISCSIDEV; 146 fd = NULL; 147 pname = vv[0]; 148 if((p = strrchr(pname, '/')) != NULL) 149 pname = p + 1; 150 151 kw = ta = 0; 152 disco = 0; 153 154 while((ch = getopt(cc, vv, OPTIONS)) != -1) { 155 switch(ch) { 156 case 'v': 157 vflag++; 158 break; 159 case 'c': 160 fd = fopen(optarg, "r"); 161 if(fd == NULL) { 162 perror(optarg); 163 exit(1); 164 } 165 break; 166 case 'd': 167 disco = 1; 168 break; 169 case 't': 170 ta = optarg; 171 break; 172 case 'n': 173 kw = optarg; 174 break; 175 default: 176 badu: 177 fprintf(stderr, "Usage: %s %s\n", pname, USAGE); 178 exit(1); 179 } 180 } 181 if(fd == NULL) 182 fd = fopen("/etc/iscsi.conf", "r"); 183 184 if(fd != NULL) { 185 parseConfig(fd, kw, op); 186 fclose(fd); 187 } 188 cc -= optind; 189 vv += optind; 190 if(cc > 0) { 191 if(vflag) 192 printf("adding '%s'\n", *vv); 193 parseArgs(cc, vv, op); 194 } 195 if(ta) 196 op->targetAddress = ta; 197 198 if(op->targetAddress == NULL) { 199 fprintf(stderr, "No target!\n"); 200 goto badu; 201 } 202 q = op->targetAddress; 203 if(*q == '[' && (q = strchr(q, ']')) != NULL) { 204 *q++ = '\0'; 205 op->targetAddress++; 206 } else 207 q = op->targetAddress; 208 if((p = strchr(q, ':')) != NULL) { 209 *p++ = 0; 210 op->port = atoi(p); 211 p = strchr(p, ','); 212 } 213 if(p || ((p = strchr(q, ',')) != NULL)) { 214 *p++ = 0; 215 op->targetPortalGroupTag = atoi(p); 216 } 217 if(op->initiatorName == 0) { 218 char hostname[256]; 219 220 if(op->iqn) { 221 if(gethostname(hostname, sizeof(hostname)) == 0) 222 asprintf(&op->initiatorName, "%s:%s", op->iqn, hostname); 223 else 224 asprintf(&op->initiatorName, "%s:%d", op->iqn, (int)time(0) & 0xff); // XXX: 225 } 226 else { 227 if(gethostname(hostname, sizeof(hostname)) == 0) 228 asprintf(&op->initiatorName, "%s", hostname); 229 else 230 asprintf(&op->initiatorName, "%d", (int)time(0) & 0xff); // XXX: 231 } 232 } 233 if(disco) { 234 op->sessionType = "Discovery"; 235 op->targetName = 0; 236 } 237 238 fsm(op); 239 240 exit(0); 241 } 242