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 } 240