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