summaryrefslogtreecommitdiffstats
path: root/usr.sbin/ctld/ctld.h
blob: 33996483f25b44a6ebf1e8b2b5195a0eaa6782bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
/*-
 * Copyright (c) 2012 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Edward Tomasz Napierala under sponsorship
 * from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef CTLD_H
#define	CTLD_H

#include <sys/queue.h>
#ifdef ICL_KERNEL_PROXY
#include <sys/types.h>
#include <sys/socket.h>
#endif
#include <stdbool.h>
#include <libutil.h>

#define	DEFAULT_CONFIG_PATH		"/etc/ctl.conf"
#define	DEFAULT_PIDFILE			"/var/run/ctld.pid"
#define	DEFAULT_BLOCKSIZE		512

#define	MAX_NAME_LEN			223
#define	MAX_DATA_SEGMENT_LENGTH		(128 * 1024)
#define	MAX_BURST_LENGTH		16776192

struct auth {
	TAILQ_ENTRY(auth)		a_next;
	struct auth_group		*a_auth_group;
	char				*a_user;
	char				*a_secret;
	char				*a_mutual_user;
	char				*a_mutual_secret;
};

struct auth_name {
	TAILQ_ENTRY(auth_name)		an_next;
	struct auth_group		*an_auth_group;
	char				*an_initator_name;
};

struct auth_portal {
	TAILQ_ENTRY(auth_portal)	ap_next;
	struct auth_group		*ap_auth_group;
	char				*ap_initator_portal;
};

#define	AG_TYPE_UNKNOWN			0
#define	AG_TYPE_DENY			1
#define	AG_TYPE_NO_AUTHENTICATION	2
#define	AG_TYPE_CHAP			3
#define	AG_TYPE_CHAP_MUTUAL		4

struct auth_group {
	TAILQ_ENTRY(auth_group)		ag_next;
	struct conf			*ag_conf;
	char				*ag_name;
	struct target			*ag_target;
	int				ag_type;
	TAILQ_HEAD(, auth)		ag_auths;
	TAILQ_HEAD(, auth_name)		ag_names;
	TAILQ_HEAD(, auth_portal)	ag_portals;
};

struct portal {
	TAILQ_ENTRY(portal)		p_next;
	struct portal_group		*p_portal_group;
	bool				p_iser;
	char				*p_listen;
	struct addrinfo			*p_ai;
#ifdef ICL_KERNEL_PROXY
	int				p_id;
#endif

	TAILQ_HEAD(, target)		p_targets;
	int				p_socket;
};

struct portal_group {
	TAILQ_ENTRY(portal_group)	pg_next;
	struct conf			*pg_conf;
	char				*pg_name;
	struct auth_group		*pg_discovery_auth_group;
	bool				pg_unassigned;
	TAILQ_HEAD(, portal)		pg_portals;

	uint16_t			pg_tag;
};

struct lun_option {
	TAILQ_ENTRY(lun_option)		lo_next;
	struct lun			*lo_lun;
	char				*lo_name;
	char				*lo_value;
};

struct lun {
	TAILQ_ENTRY(lun)		l_next;
	TAILQ_HEAD(, lun_option)	l_options;
	struct target			*l_target;
	int				l_lun;
	char				*l_backend;
	int				l_blocksize;
	char				*l_device_id;
	char				*l_path;
	char				*l_serial;
	int64_t				l_size;

	int				l_ctl_lun;
};

struct target {
	TAILQ_ENTRY(target)		t_next;
	TAILQ_HEAD(, lun)		t_luns;
	struct conf			*t_conf;
	struct auth_group		*t_auth_group;
	struct portal_group		*t_portal_group;
	char				*t_name;
	char				*t_alias;
};

struct conf {
	char				*conf_pidfile_path;
	TAILQ_HEAD(, target)		conf_targets;
	TAILQ_HEAD(, auth_group)	conf_auth_groups;
	TAILQ_HEAD(, portal_group)	conf_portal_groups;
	int				conf_debug;
	int				conf_timeout;
	int				conf_maxproc;

	uint16_t			conf_last_portal_group_tag;
#ifdef ICL_KERNEL_PROXY
	int				conf_portal_id;
#endif
	struct pidfh			*conf_pidfh;

	bool				conf_default_pg_defined;
	bool				conf_default_ag_defined;
	bool				conf_kernel_port_on;
};

#define	CONN_SESSION_TYPE_NONE		0
#define	CONN_SESSION_TYPE_DISCOVERY	1
#define	CONN_SESSION_TYPE_NORMAL	2

#define	CONN_DIGEST_NONE		0
#define	CONN_DIGEST_CRC32C		1

struct connection {
	struct portal		*conn_portal;
	struct target		*conn_target;
	int			conn_socket;
	int			conn_session_type;
	char			*conn_initiator_name;
	char			*conn_initiator_addr;
	char			*conn_initiator_alias;
	uint32_t		conn_cmdsn;
	uint32_t		conn_statsn;
	size_t			conn_max_data_segment_length;
	size_t			conn_max_burst_length;
	int			conn_immediate_data;
	int			conn_header_digest;
	int			conn_data_digest;
};

struct pdu {
	struct connection	*pdu_connection;
	struct iscsi_bhs	*pdu_bhs;
	char			*pdu_data;
	size_t			pdu_data_len;
};

#define	KEYS_MAX	1024

struct keys {
	char		*keys_names[KEYS_MAX];
	char		*keys_values[KEYS_MAX];
	char		*keys_data;
	size_t		keys_data_len;
};

struct conf		*conf_new(void);
struct conf		*conf_new_from_file(const char *path);
struct conf		*conf_new_from_kernel(void);
void			conf_delete(struct conf *conf);
int			conf_verify(struct conf *conf);

struct auth_group	*auth_group_new(struct conf *conf, const char *name);
void			auth_group_delete(struct auth_group *ag);
struct auth_group	*auth_group_find(const struct conf *conf,
			    const char *name);
int			auth_group_set_type_str(struct auth_group *ag,
			    const char *type);

const struct auth	*auth_new_chap(struct auth_group *ag,
			    const char *user, const char *secret);
const struct auth	*auth_new_chap_mutual(struct auth_group *ag,
			    const char *user, const char *secret,
			    const char *user2, const char *secret2);
const struct auth	*auth_find(const struct auth_group *ag,
			    const char *user);

const struct auth_name	*auth_name_new(struct auth_group *ag,
			    const char *initiator_name);
bool			auth_name_defined(const struct auth_group *ag);
const struct auth_name	*auth_name_find(const struct auth_group *ag,
			    const char *initiator_name);

const struct auth_portal	*auth_portal_new(struct auth_group *ag,
				    const char *initiator_portal);
bool			auth_portal_defined(const struct auth_group *ag);
const struct auth_portal	*auth_portal_find(const struct auth_group *ag,
				    const char *initiator_portal);

struct portal_group	*portal_group_new(struct conf *conf, const char *name);
void			portal_group_delete(struct portal_group *pg);
struct portal_group	*portal_group_find(const struct conf *conf,
			    const char *name);
int			portal_group_add_listen(struct portal_group *pg,
			    const char *listen, bool iser);

struct target		*target_new(struct conf *conf, const char *name);
void			target_delete(struct target *target);
struct target		*target_find(struct conf *conf,
			    const char *name);

struct lun		*lun_new(struct target *target, int lun_id);
void			lun_delete(struct lun *lun);
struct lun		*lun_find(const struct target *target, int lun_id);
void			lun_set_backend(struct lun *lun, const char *value);
void			lun_set_blocksize(struct lun *lun, size_t value);
void			lun_set_device_id(struct lun *lun, const char *value);
void			lun_set_path(struct lun *lun, const char *value);
void			lun_set_serial(struct lun *lun, const char *value);
void			lun_set_size(struct lun *lun, size_t value);
void			lun_set_ctl_lun(struct lun *lun, uint32_t value);

struct lun_option	*lun_option_new(struct lun *lun,
			    const char *name, const char *value);
void			lun_option_delete(struct lun_option *clo);
struct lun_option	*lun_option_find(const struct lun *lun,
			    const char *name);
void			lun_option_set(struct lun_option *clo,
			    const char *value);

void			kernel_init(void);
int			kernel_lun_add(struct lun *lun);
int			kernel_lun_resize(struct lun *lun);
int			kernel_lun_remove(struct lun *lun);
void			kernel_handoff(struct connection *conn);
int			kernel_port_on(void);
int			kernel_port_off(void);
void			kernel_capsicate(void);

#ifdef ICL_KERNEL_PROXY
void			kernel_listen(struct addrinfo *ai, bool iser,
			    int portal_id);
void			kernel_accept(int *connection_id, int *portal_id,
			    struct sockaddr *client_sa,
			    socklen_t *client_salen);
void			kernel_send(struct pdu *pdu);
void			kernel_receive(struct pdu *pdu);
#endif

struct keys		*keys_new(void);
void			keys_delete(struct keys *keys);
void			keys_load(struct keys *keys, const struct pdu *pdu);
void			keys_save(struct keys *keys, struct pdu *pdu);
const char		*keys_find(struct keys *keys, const char *name);
int			keys_find_int(struct keys *keys, const char *name);
void			keys_add(struct keys *keys,
			    const char *name, const char *value);
void			keys_add_int(struct keys *keys,
			    const char *name, int value);

struct pdu		*pdu_new(struct connection *conn);
struct pdu		*pdu_new_response(struct pdu *request);
void			pdu_delete(struct pdu *pdu);
void			pdu_receive(struct pdu *request);
void			pdu_send(struct pdu *response);

void			login(struct connection *conn);

void			discovery(struct connection *conn);

void			log_init(int level);
void			log_set_peer_name(const char *name);
void			log_set_peer_addr(const char *addr);
void			log_err(int, const char *, ...)
			    __dead2 __printflike(2, 3);
void			log_errx(int, const char *, ...)
			    __dead2 __printflike(2, 3);
void			log_warn(const char *, ...) __printflike(1, 2);
void			log_warnx(const char *, ...) __printflike(1, 2);
void			log_debugx(const char *, ...) __printflike(1, 2);

char			*checked_strdup(const char *);
bool			valid_iscsi_name(const char *name);
bool			timed_out(void);

#endif /* !CTLD_H */
OpenPOWER on IntegriCloud