iscontrol(8): Fix building with -fno-common.
[dragonfly.git] / sbin / iscontrol / iscontrol.c
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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
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34#include <sys/param.h>
35#include <sys/types.h>
36#include <sys/socket.h>
37#include <sys/sysctl.h>
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38#include <sys/module.h>
39#include <sys/linker.h>
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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
e53224f8 58#define USAGE "[-dv] [-c file] [-n nickname] [-t target] [variable=value ...]"
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59#define OPTIONS "vdc:t:n:"
60
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61token_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
71token_t DigestMethods[] = {
72 {"None", 0},
73 {"CRC32", 1},
74 {"CRC32C", 1},
75 {0, 0}
76};
77
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78int vflag;
79char *iscsidev;
80
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81u_char isid[6 + 6];
82/*
83 | Default values
84 */
85isc_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
114int
115lookup(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
125int
126main(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
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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
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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
678e8cc6 148 kw = ta = NULL;
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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}