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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/iscsid/iscsid.c	Lines:	0	153	0.0 %
Date:	2017-11-13	Branches:	0	81	0.0 %


/*	$OpenBSD: iscsid.c,v 1.20 2017/01/23 08:40:07 benno Exp $ */

/*
 * Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/uio.h>

#include <err.h>
#include <event.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "iscsid.h"
#include "log.h"

void		main_sig_handler(int, short, void *);
__dead void	usage(void);
void		shutdown_cb(int, short, void *);

struct initiator *initiator;
struct event exit_ev;
int exit_rounds;
#define ISCSI_EXIT_WAIT 5

const struct session_params	iscsi_sess_defaults = {
	.MaxBurstLength = 262144,
	.FirstBurstLength = 65536,
	.DefaultTime2Wait = 2,
	.DefaultTime2Retain = 20,
	.MaxOutstandingR2T = 1,
	.MaxConnections = 1,
	.InitialR2T = 1,
	.ImmediateData = 1,
	.DataPDUInOrder = 1,
	.DataSequenceInOrder = 1,
	.ErrorRecoveryLevel = 0
};

const struct connection_params	iscsi_conn_defaults = {
	.MaxRecvDataSegmentLength = 8192
};

int
main(int argc, char *argv[])
{
	struct event ev_sigint, ev_sigterm, ev_sighup;
	struct passwd *pw;
	char *ctrlsock = ISCSID_CONTROL;
	char *vscsidev = ISCSID_DEVICE;
	int name[] = { CTL_KERN, KERN_PROC_NOBROADCASTKILL, 0 };
	int ch, debug = 0, verbose = 0, nobkill = 1;

	log_procname = getprogname();

	log_init(1);    /* log to stderr until daemonized */
	log_verbose(1);

	while ((ch = getopt(argc, argv, "dn:s:v")) != -1) {
		switch (ch) {
		case 'd':
			debug = 1;
			break;
		case 'n':
			vscsidev = optarg;
			break;
		case 's':
			ctrlsock = optarg;
			break;
		case 'v':
			verbose = 1;
			break;
		default:
			usage();
			/* NOTREACHED */
		}
	}

	argc -= optind;
	argv += optind;

	if (argc > 0)
		usage();

	/* check for root privileges  */
	if (geteuid())
		errx(1, "need root privileges");

	log_init(debug);
	log_verbose(verbose);

	if (control_init(ctrlsock) == -1)
		fatalx("control socket setup failed");

	if (!debug)
		daemon(1, 0);
	log_info("startup");

	name[2] = getpid();
	if (sysctl(name, 3, NULL, 0, &nobkill, sizeof(nobkill)) != 0)
		fatal("sysctl");

	event_init();
	vscsi_open(vscsidev);

	/* chroot and drop to iscsid user */
	if ((pw = getpwnam(ISCSID_USER)) == NULL)
		errx(1, "unknown user %s", ISCSID_USER);

	if (chroot(pw->pw_dir) == -1)
		fatal("chroot");
	if (chdir("/") == -1)
		fatal("chdir(\"/\")");
	if (setgroups(1, &pw->pw_gid) ||
	    setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
	    setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
		fatal("can't drop privileges");

	/* setup signal handler */
	signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
	signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
	signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
	signal_add(&ev_sigint, NULL);
	signal_add(&ev_sigterm, NULL);
	signal_add(&ev_sighup, NULL);
	signal(SIGPIPE, SIG_IGN);

	control_event_init();
	initiator = initiator_init();

	event_dispatch();

	/* do some cleanup on the way out */
	control_cleanup(ctrlsock);
	initiator_cleanup(initiator);
	log_info("exiting.");
	return 0;
}

void
shutdown_cb(int fd, short event, void *arg)
{
	struct timeval tv;

	if (exit_rounds++ >= ISCSI_EXIT_WAIT || initiator_isdown(initiator))
		event_loopexit(NULL);

	timerclear(&tv);
	tv.tv_sec = 1;

	if (evtimer_add(&exit_ev, &tv) == -1)
		fatal("shutdown_cb");
}

void
main_sig_handler(int sig, short event, void *arg)
{
	struct timeval tv;

	/* signal handler rules don't apply, libevent decouples for us */
	switch (sig) {
	case SIGTERM:
	case SIGINT:
	case SIGHUP:
		initiator_shutdown(initiator);
		evtimer_set(&exit_ev, shutdown_cb, NULL);
		timerclear(&tv);
		if (evtimer_add(&exit_ev, &tv) == -1)
			fatal("main_sig_handler");
		break;
	default:
		fatalx("unexpected signal");
		/* NOTREACHED */
	}
}

__dead void
usage(void)
{
	extern char *__progname;

	fprintf(stderr, "usage: %s [-dv] [-n device] [-s socket]\n",
	    __progname);
	exit(1);
}

void
iscsid_ctrl_dispatch(void *ch, struct pdu *pdu)
{
	struct ctrlmsghdr *cmh;
	struct initiator_config *ic;
	struct session_config *sc;
	struct session *s;
	int *valp;

	cmh = pdu_getbuf(pdu, NULL, 0);
	if (cmh == NULL)
		goto done;

	switch (cmh->type) {
	case CTRL_INITIATOR_CONFIG:
		if (cmh->len[0] != sizeof(*ic)) {
			log_warnx("CTRL_INITIATOR_CONFIG bad size");
			control_compose(ch, CTRL_FAILURE, NULL, 0);
			break;
		}
		ic = pdu_getbuf(pdu, NULL, 1);
		memcpy(&initiator->config, ic, sizeof(initiator->config));
		control_compose(ch, CTRL_SUCCESS, NULL, 0);
		break;
	case CTRL_SESSION_CONFIG:
		if (cmh->len[0] != sizeof(*sc)) {
			log_warnx("CTRL_SESSION_CONFIG bad size");
			control_compose(ch, CTRL_FAILURE, NULL, 0);
			break;
		}
		sc = pdu_getbuf(pdu, NULL, 1);
		if (cmh->len[1])
			sc->TargetName = pdu_getbuf(pdu, NULL, 2);
		else if (sc->SessionType != SESSION_TYPE_DISCOVERY) {
			control_compose(ch, CTRL_FAILURE, NULL, 0);
			goto done;
		} else
			sc->TargetName = NULL;
		if (cmh->len[2])
			sc->InitiatorName = pdu_getbuf(pdu, NULL, 3);
		else
			sc->InitiatorName = NULL;

		s = session_find(initiator, sc->SessionName);
		if (s == NULL) {
			s = session_new(initiator, sc->SessionType);
			if (s == NULL) {
				control_compose(ch, CTRL_FAILURE, NULL, 0);
				goto done;
			}
		}

		session_config(s, sc);
		if (s->state == SESS_INIT)
			session_fsm(s, SESS_EV_START, NULL, 0);

		control_compose(ch, CTRL_SUCCESS, NULL, 0);
		break;
	case CTRL_LOG_VERBOSE:
		if (cmh->len[0] != sizeof(int)) {
			log_warnx("CTRL_LOG_VERBOSE bad size");
			control_compose(ch, CTRL_FAILURE, NULL, 0);
			break;
		}
		valp = pdu_getbuf(pdu, NULL, 1);
		log_verbose(*valp);
		control_compose(ch, CTRL_SUCCESS, NULL, 0);
		break;
	case CTRL_VSCSI_STATS:
		control_compose(ch, CTRL_VSCSI_STATS, vscsi_stats(),
		    sizeof(struct vscsi_stats));
		break;
	case CTRL_SHOW_SUM:
		control_compose(ch, CTRL_INITIATOR_CONFIG, &initiator->config,
		    sizeof(initiator->config));

		TAILQ_FOREACH(s, &initiator->sessions, entry) {
			struct ctrldata cdv[3];
			bzero(cdv, sizeof(cdv));

			cdv[0].buf = &s->config;
			cdv[0].len = sizeof(s->config);

			if (s->config.TargetName) {
				cdv[1].buf = s->config.TargetName;
				cdv[1].len =
				    strlen(s->config.TargetName) + 1;
			}
			if (s->config.InitiatorName) {
				cdv[2].buf = s->config.InitiatorName;
				cdv[2].len =
				    strlen(s->config.InitiatorName) + 1;
			}

			control_build(ch, CTRL_SESSION_CONFIG,
			    nitems(cdv), cdv);
		}

		control_compose(ch, CTRL_SUCCESS, NULL, 0);
		break;
	default:
		log_warnx("unknown control message type %d", cmh->type);
		control_compose(ch, CTRL_FAILURE, NULL, 0);
		break;
	}

done:
	pdu_free(pdu);
}

#define MERGE_MIN(r, a, b, v)				\
	r->v = (a->v < b->v ? a->v : b->v)
#define MERGE_MAX(r, a, b, v)				\
	r->v = (a->v > b->v ? a->v : b->v)
#define MERGE_OR(r, a, b, v)				\
	r->v = (a->v || b->v)
#define MERGE_AND(r, a, b, v)				\
	r->v = (a->v && b->v)

void
iscsi_merge_sess_params(struct session_params *res,
    struct session_params *mine, struct session_params *his)
{
	MERGE_MIN(res, mine, his, MaxBurstLength);
	MERGE_MIN(res, mine, his, FirstBurstLength);
	MERGE_MAX(res, mine, his, DefaultTime2Wait);
	MERGE_MIN(res, mine, his, DefaultTime2Retain);
	MERGE_MIN(res, mine, his, MaxOutstandingR2T);
	res->TargetPortalGroupTag = his->TargetPortalGroupTag;
	MERGE_MIN(res, mine, his, MaxConnections);
	MERGE_OR(res, mine, his, InitialR2T);
	MERGE_AND(res, mine, his, ImmediateData);
	MERGE_OR(res, mine, his, DataPDUInOrder);
	MERGE_OR(res, mine, his, DataSequenceInOrder);
	MERGE_MIN(res, mine, his, ErrorRecoveryLevel);

}

void
iscsi_merge_conn_params(struct connection_params *res,
    struct connection_params *mine, struct connection_params *his)
{
	res->MaxRecvDataSegmentLength = his->MaxRecvDataSegmentLength;
	/* XXX HeaderDigest and DataDigest */
}

#undef MERGE_MIN
#undef MERGE_MAX
#undef MERGE_OR
#undef MERGE_AND


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: iscsid.c,v 1.20 2017/01/23 08:40:07 benno Exp $ */
2
3			/*
4			* Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/queue.h>
20			#include <sys/socket.h>
21			#include <sys/sysctl.h>
22			#include <sys/time.h>
23			#include <sys/uio.h>
24
25			#include <err.h>
26			#include <event.h>
27			#include <pwd.h>
28			#include <signal.h>
29			#include <stdio.h>
30			#include <stdlib.h>
31			#include <string.h>
32			#include <unistd.h>
33
34			#include "iscsid.h"
35			#include "log.h"
36
37			void main_sig_handler(int, short, void *);
38			__dead void usage(void);
39			void shutdown_cb(int, short, void *);
40
41			struct initiator *initiator;
42			struct event exit_ev;
43			int exit_rounds;
44			#define ISCSI_EXIT_WAIT 5
45
46			const struct session_params iscsi_sess_defaults = {
47			.MaxBurstLength = 262144,
48			.FirstBurstLength = 65536,
49			.DefaultTime2Wait = 2,
50			.DefaultTime2Retain = 20,
51			.MaxOutstandingR2T = 1,
52			.MaxConnections = 1,
53			.InitialR2T = 1,
54			.ImmediateData = 1,
55			.DataPDUInOrder = 1,
56			.DataSequenceInOrder = 1,
57			.ErrorRecoveryLevel = 0
58			};
59
60			const struct connection_params iscsi_conn_defaults = {
61			.MaxRecvDataSegmentLength = 8192
62			};
63
64			int
65			main(int argc, char *argv[])
66			{
67			struct event ev_sigint, ev_sigterm, ev_sighup;
68			struct passwd *pw;
69			char *ctrlsock = ISCSID_CONTROL;
70			char *vscsidev = ISCSID_DEVICE;
71			int name[] = { CTL_KERN, KERN_PROC_NOBROADCASTKILL, 0 };
72			int ch, debug = 0, verbose = 0, nobkill = 1;
73
74			log_procname = getprogname();
75
76			log_init(1); /* log to stderr until daemonized */
77			log_verbose(1);
78
79			while ((ch = getopt(argc, argv, "dn:s:v")) != -1) {
80			switch (ch) {
81			case 'd':
82			debug = 1;
83			break;
84			case 'n':
85			vscsidev = optarg;
86			break;
87			case 's':
88			ctrlsock = optarg;
89			break;
90			case 'v':
91			verbose = 1;
92			break;
93			default:
94			usage();
95			/* NOTREACHED */
96			}
97			}
98
99			argc -= optind;
100			argv += optind;
101
102			if (argc > 0)
103			usage();
104
105			/* check for root privileges */
106			if (geteuid())
107			errx(1, "need root privileges");
108
109			log_init(debug);
110			log_verbose(verbose);
111
112			if (control_init(ctrlsock) == -1)
113			fatalx("control socket setup failed");
114
115			if (!debug)
116			daemon(1, 0);
117			log_info("startup");
118
119			name[2] = getpid();
120			if (sysctl(name, 3, NULL, 0, &nobkill, sizeof(nobkill)) != 0)
121			fatal("sysctl");
122
123			event_init();
124			vscsi_open(vscsidev);
125
126			/* chroot and drop to iscsid user */
127			if ((pw = getpwnam(ISCSID_USER)) == NULL)
128			errx(1, "unknown user %s", ISCSID_USER);
129
130			if (chroot(pw->pw_dir) == -1)
131			fatal("chroot");
132			if (chdir("/") == -1)
133			fatal("chdir(\"/\")");
134			if (setgroups(1, &pw->pw_gid) \|\|
135			setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) \|\|
136			setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
137			fatal("can't drop privileges");
138
139			/* setup signal handler */
140			signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
141			signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
142			signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
143			signal_add(&ev_sigint, NULL);
144			signal_add(&ev_sigterm, NULL);
145			signal_add(&ev_sighup, NULL);
146			signal(SIGPIPE, SIG_IGN);
147
148			control_event_init();
149			initiator = initiator_init();
150
151			event_dispatch();
152
153			/* do some cleanup on the way out */
154			control_cleanup(ctrlsock);
155			initiator_cleanup(initiator);
156			log_info("exiting.");
157			return 0;
158			}
159
160			void
161			shutdown_cb(int fd, short event, void *arg)
162			{
163			struct timeval tv;
164
165			if (exit_rounds++ >= ISCSI_EXIT_WAIT \|\| initiator_isdown(initiator))
166			event_loopexit(NULL);
167
168			timerclear(&tv);
169			tv.tv_sec = 1;
170
171			if (evtimer_add(&exit_ev, &tv) == -1)
172			fatal("shutdown_cb");
173			}
174
175			void
176			main_sig_handler(int sig, short event, void *arg)
177			{
178			struct timeval tv;
179
180			/* signal handler rules don't apply, libevent decouples for us */
181			switch (sig) {
182			case SIGTERM:
183			case SIGINT:
184			case SIGHUP:
185			initiator_shutdown(initiator);
186			evtimer_set(&exit_ev, shutdown_cb, NULL);
187			timerclear(&tv);
188			if (evtimer_add(&exit_ev, &tv) == -1)
189			fatal("main_sig_handler");
190			break;
191			default:
192			fatalx("unexpected signal");
193			/* NOTREACHED */
194			}
195			}
196
197			__dead void
198			usage(void)
199			{
200			extern char *__progname;
201
202			fprintf(stderr, "usage: %s [-dv] [-n device] [-s socket]\n",
203			__progname);
204			exit(1);
205			}
206
207			void
208			iscsid_ctrl_dispatch(void ch, struct pdu pdu)
209			{
210			struct ctrlmsghdr *cmh;
211			struct initiator_config *ic;
212			struct session_config *sc;
213			struct session *s;
214			int *valp;
215
216			cmh = pdu_getbuf(pdu, NULL, 0);
217			if (cmh == NULL)
218			goto done;
219
220			switch (cmh->type) {
221			case CTRL_INITIATOR_CONFIG:
222			if (cmh->len[0] != sizeof(*ic)) {
223			log_warnx("CTRL_INITIATOR_CONFIG bad size");
224			control_compose(ch, CTRL_FAILURE, NULL, 0);
225			break;
226			}
227			ic = pdu_getbuf(pdu, NULL, 1);
228			memcpy(&initiator->config, ic, sizeof(initiator->config));
229			control_compose(ch, CTRL_SUCCESS, NULL, 0);
230			break;
231			case CTRL_SESSION_CONFIG:
232			if (cmh->len[0] != sizeof(*sc)) {
233			log_warnx("CTRL_SESSION_CONFIG bad size");
234			control_compose(ch, CTRL_FAILURE, NULL, 0);
235			break;
236			}
237			sc = pdu_getbuf(pdu, NULL, 1);
238			if (cmh->len[1])
239			sc->TargetName = pdu_getbuf(pdu, NULL, 2);
240			else if (sc->SessionType != SESSION_TYPE_DISCOVERY) {
241			control_compose(ch, CTRL_FAILURE, NULL, 0);
242			goto done;
243			} else
244			sc->TargetName = NULL;
245			if (cmh->len[2])
246			sc->InitiatorName = pdu_getbuf(pdu, NULL, 3);
247			else
248			sc->InitiatorName = NULL;
249
250			s = session_find(initiator, sc->SessionName);
251			if (s == NULL) {
252			s = session_new(initiator, sc->SessionType);
253			if (s == NULL) {
254			control_compose(ch, CTRL_FAILURE, NULL, 0);
255			goto done;
256			}
257			}
258
259			session_config(s, sc);
260			if (s->state == SESS_INIT)
261			session_fsm(s, SESS_EV_START, NULL, 0);
262
263			control_compose(ch, CTRL_SUCCESS, NULL, 0);
264			break;
265			case CTRL_LOG_VERBOSE:
266			if (cmh->len[0] != sizeof(int)) {
267			log_warnx("CTRL_LOG_VERBOSE bad size");
268			control_compose(ch, CTRL_FAILURE, NULL, 0);
269			break;
270			}
271			valp = pdu_getbuf(pdu, NULL, 1);
272			log_verbose(*valp);
273			control_compose(ch, CTRL_SUCCESS, NULL, 0);
274			break;
275			case CTRL_VSCSI_STATS:
276			control_compose(ch, CTRL_VSCSI_STATS, vscsi_stats(),
277			sizeof(struct vscsi_stats));
278			break;
279			case CTRL_SHOW_SUM:
280			control_compose(ch, CTRL_INITIATOR_CONFIG, &initiator->config,
281			sizeof(initiator->config));
282
283			TAILQ_FOREACH(s, &initiator->sessions, entry) {
284			struct ctrldata cdv[3];
285			bzero(cdv, sizeof(cdv));
286
287			cdv[0].buf = &s->config;
288			cdv[0].len = sizeof(s->config);
289
290			if (s->config.TargetName) {
291			cdv[1].buf = s->config.TargetName;
292			cdv[1].len =
293			strlen(s->config.TargetName) + 1;
294			}
295			if (s->config.InitiatorName) {
296			cdv[2].buf = s->config.InitiatorName;
297			cdv[2].len =
298			strlen(s->config.InitiatorName) + 1;
299			}
300
301			control_build(ch, CTRL_SESSION_CONFIG,
302			nitems(cdv), cdv);
303			}
304
305			control_compose(ch, CTRL_SUCCESS, NULL, 0);
306			break;
307			default:
308			log_warnx("unknown control message type %d", cmh->type);
309			control_compose(ch, CTRL_FAILURE, NULL, 0);
310			break;
311			}
312
313			done:
314			pdu_free(pdu);
315			}
316
317			#define MERGE_MIN(r, a, b, v) \
318			r->v = (a->v < b->v ? a->v : b->v)
319			#define MERGE_MAX(r, a, b, v) \
320			r->v = (a->v > b->v ? a->v : b->v)
321			#define MERGE_OR(r, a, b, v) \
322			r->v = (a->v \|\| b->v)
323			#define MERGE_AND(r, a, b, v) \
324			r->v = (a->v && b->v)
325
326			void
327			iscsi_merge_sess_params(struct session_params *res,
328			struct session_params mine, struct session_params his)
329			{
330			MERGE_MIN(res, mine, his, MaxBurstLength);
331			MERGE_MIN(res, mine, his, FirstBurstLength);
332			MERGE_MAX(res, mine, his, DefaultTime2Wait);
333			MERGE_MIN(res, mine, his, DefaultTime2Retain);
334			MERGE_MIN(res, mine, his, MaxOutstandingR2T);
335			res->TargetPortalGroupTag = his->TargetPortalGroupTag;
336			MERGE_MIN(res, mine, his, MaxConnections);
337			MERGE_OR(res, mine, his, InitialR2T);
338			MERGE_AND(res, mine, his, ImmediateData);
339			MERGE_OR(res, mine, his, DataPDUInOrder);
340			MERGE_OR(res, mine, his, DataSequenceInOrder);
341			MERGE_MIN(res, mine, his, ErrorRecoveryLevel);
342
343			}
344
345			void
346			iscsi_merge_conn_params(struct connection_params *res,
347			struct connection_params mine, struct connection_params his)
348			{
349			res->MaxRecvDataSegmentLength = his->MaxRecvDataSegmentLength;
350			/* XXX HeaderDigest and DataDigest */
351			}
352
353			#undef MERGE_MIN
354			#undef MERGE_MAX
355			#undef MERGE_OR
356			#undef MERGE_AND