1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <stdlib.h>
27#include <stdio.h>
28#include <strings.h>
29#include <sys/types.h>
30#include <unistd.h>
31#include <stropts.h>
32#include <libintl.h>
33#include <errno.h>
34#include <time.h>
35#include <string.h>
36#include <assert.h>
37#include <getopt.h>
38#include <cmdparse.h>
39#include <signal.h>
40#include <pthread.h>
41#include <fcntl.h>
42#include <locale.h>
43#include <sys/systeminfo.h>
44
45#include <libiscsit.h>
46#include <sys/iscsit/iscsit_common.h>
47
48static int it_enable(int, char **, cmdOptions_t *, void *);
49static int it_disable(int, char **, cmdOptions_t *, void *);
50
51/*
52 *  MAJOR - This should only change when there is an incompatible change made
53 *  to the interfaces or the output.
54 *
55 *  MINOR - This should change whenever there is a new command or new feature
56 *  with no incompatible change.
57 */
58#define	VERSION_STRING_MAJOR	    "1"
59#define	VERSION_STRING_MINOR	    "0"
60#define	VERSION_STRING_MAX_LEN	    10
61
62/* 10 ms sleep in nanoseconds */
63#define	TEN_MS_NANOSLEEP  10000000
64
65/* tables set up based on cmdparse instructions */
66
67/* add new options here */
68optionTbl_t longOptions[] = {
69	{NULL, 0, 0, 0}
70};
71
72/*
73 * Add new subcommands here
74 */
75subCommandProps_t subcommands[] = {
76	{"start", it_enable, NULL, NULL, NULL, OPERAND_NONE, NULL},
77	{"stop", it_disable, NULL, NULL, NULL, OPERAND_NONE, NULL},
78	{NULL, 0, NULL, NULL, 0, NULL, 0, NULL}
79};
80
81/* globals */
82char *cmdName;
83
84/*
85 * Opens the iSCSI Target Node
86 *
87 * fd - Return the iscsit file descriptor
88 */
89static int
90it_open(int *fd)
91{
92
93	int ret = ITADM_SUCCESS;
94
95	*fd = open(ISCSIT_NODE, O_RDONLY);
96	if (*fd < 0) {
97		if (errno == EPERM) {
98			(void) fprintf(stdout, "open failed: EPERM");
99			ret = ITADM_PERM;
100		} else {
101			(void) fprintf(stdout, "open failed: INVALID");
102			ret = ITADM_INVALID;
103		}
104	}
105
106	return (ret);
107}
108
109/*
110 * Enables the iSCSI Target
111 */
112/*ARGSUSED*/
113static int
114it_enable(int operandLen, char *operands[], cmdOptions_t *options,
115    void *args)
116{
117	int	ret;
118	int	fd;
119	char	buf[256];
120	uint32_t *buflenp;
121	char	*fqhnp;
122	iscsit_hostinfo_t hostinfo;
123
124	(void) fprintf(stdout, "%s: %s\n", cmdName,
125	    gettext("Requesting to enable iscsi target"));
126
127	bzero(buf, 256);
128	bzero(hostinfo.fqhn, sizeof (hostinfo.fqhn));
129
130	/* Open the iscsi target node */
131	if ((ret = it_open(&fd)) != ITADM_SUCCESS) {
132		(void) fprintf(stdout, "Unable to open device %s", ISCSIT_NODE);
133		return (ret);
134	}
135
136	(void) fprintf(stdout, "it_enable [fd=%d]\n", fd);
137	/* enable the iscsi target */
138	buflenp = (uint32_t *)((void *)&buf);
139	*buflenp = strlen("target_name") + 1;
140	(void) strncpy(buf + sizeof (uint32_t), "target_name",
141	    256 - sizeof (uint32_t));
142
143	fqhnp = &hostinfo.fqhn[0];
144
145	ret = sysinfo(SI_HOSTNAME, fqhnp, 256);
146
147	if ((ret != -1) && (ret < sizeof (hostinfo.fqhn))) {
148		fqhnp += ret;
149		hostinfo.length = ret;
150		hostinfo.fqhn[ret-1] = '.';
151		hostinfo.length += sysinfo(SI_SRPC_DOMAIN, fqhnp,
152		    sizeof (hostinfo.fqhn) - ret);
153	}
154
155	(void) fprintf(stdout, "it_enable: fqhn = '%s'\n", hostinfo.fqhn);
156
157	if ((ret = ioctl(fd, ISCSIT_IOC_ENABLE_SVC, &hostinfo)) != 0) {
158		(void) fprintf(stdout, "Unable to issue ioctl: %d", errno);
159		return (ret);
160	}
161	return (ITADM_SUCCESS);
162}
163
164
165/*
166 * Disable the iSCSI target
167 */
168/* ARGSUSED */
169static int
170it_disable(int operandLen, char *operands[], cmdOptions_t *options,
171    void *args)
172{
173	int	ret;
174	int	fd;
175
176	(void) fprintf(stdout, "%s: %s\n", cmdName,
177	    gettext("Requesting to disable iscsi target"));
178
179	/* Open the iscsi target node */
180	if ((ret = it_open(&fd)) != ITADM_SUCCESS) {
181		return (ret);
182	}
183
184	/* disable the iSCSI target */
185	if ((ret = ioctl(fd, ISCSIT_IOC_DISABLE_SVC, NULL)) != 0) {
186		return (ret);
187	}
188	return (ITADM_SUCCESS);
189}
190
191/*
192 * input:
193 *  execFullName - exec name of program (argv[0])
194 *
195 *  copied from usr/src/cmd/zoneadm/zoneadm.c in OS/Net
196 *  (changed name to lowerCamelCase to keep consistent with this file)
197 *
198 * Returns:
199 *  command name portion of execFullName
200 */
201static char *
202getExecBasename(char *execFullname)
203{
204	char *lastSlash, *execBasename;
205
206	/* guard against '/' at end of command invocation */
207	for (;;) {
208		lastSlash = strrchr(execFullname, '/');
209		if (lastSlash == NULL) {
210			execBasename = execFullname;
211			break;
212		} else {
213			execBasename = lastSlash + 1;
214			if (*execBasename == '\0') {
215				*lastSlash = '\0';
216				continue;
217			}
218			break;
219		}
220	}
221	return (execBasename);
222}
223
224int
225main(int argc, char *argv[])
226{
227	synTables_t synTables;
228	char versionString[VERSION_STRING_MAX_LEN];
229	int ret;
230	int funcRet;
231	void *subcommandArgs = NULL;
232
233	(void) setlocale(LC_ALL, "");
234	/* set global command name */
235	cmdName = getExecBasename(argv[0]);
236
237	(void) snprintf(versionString, VERSION_STRING_MAX_LEN, "%s.%s",
238	    VERSION_STRING_MAJOR, VERSION_STRING_MINOR);
239	synTables.versionString = versionString;
240	synTables.longOptionTbl = &longOptions[0];
241	synTables.subCommandPropsTbl = &subcommands[0];
242
243	ret = cmdParse(argc, argv, synTables, subcommandArgs, &funcRet);
244	if (ret != 0) {
245		return (ret);
246	}
247
248	return (funcRet);
249} /* end main */
250