iscsitsvc - zygaena/hammerhead

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#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

PROG =	iscsi-target

include ../Makefile.cmd

COMMONBASE = ../../common

LOCAL_OBJS = iscsitsvc.o
COMMON_OBJS = cmdparse.o
LOCAL_SRCS =	$(LOCAL_OBJS:%.o=%.c)
COMMON_SRCS =	$(COMMON_OBJS:%.o=$(COMMONBASE)/cmdparse/%.c)
OBJS =	$(LOCAL_OBJS) $(COMMON_OBJS)
SRCS = $(LOCAL_SRCS) $(COMMON_SRCS)

CPPFLAGS += -I$(COMMONBASE)/cmdparse

MANIFEST    = iscsi-target.xml
SVCMETHOD   = iscsi-target

ROOTMANIFESTDIR	= $(ROOTSVCNETWORKISCSI)
$(ROOTSVCNETWORKISCSI)/iscsi-target.xml	: FILEMODE = 0444

.KEEP_STATE:

all: $(PROG)

$(PROG): $(OBJS)
	$(LINK.c) -o $@ $(OBJS) $(LDLIBS)
	$(POST_PROCESS)

install: all $(ROOTMANIFEST) $(ROOTSVCMETHOD)

check:	$(CHKMANIFEST)
	$(CSTYLE) -pPc $(SRCS:%=%)

cmdparse.o: $(COMMONBASE)/cmdparse/cmdparse.c
	    $(COMPILE.c) -o $@ $(COMMONBASE)/cmdparse/cmdparse.c
	    $(POST_PROCESS_O)

clean:
	$(RM) $(OBJS)

lint:	lint_SRCS

include ../Makefile.targ
<?xml version='1.0'?>
<!DOCTYPE service_bundle SYSTEM '/usr/share/lib/xml/dtd/service_bundle.dtd.1'>

<!--

CDDL HEADER START

The contents of this file are subject to the terms of the
Common Development and Distribution License (the "License").
You may not use this file except in compliance with the License.

You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
or http://www.opensolaris.org/os/licensing.
See the License for the specific language governing permissions
and limitations under the License.

When distributing Covered Code, include this CDDL HEADER in each
file and include the License file at usr/src/OPENSOLARIS.LICENSE.
If applicable, add the following below this CDDL HEADER, with the
fields enclosed by brackets "[]" replaced with your own identifying
information: Portions Copyright [yyyy] [name of copyright owner]

CDDL HEADER END

Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.

Service manifests for iSCSI Target
-->

<!--
	network/iscsi/target - Export iSCSI target services

-->

<service_bundle type='manifest' name='SUNWiscsitr:iscsi-target'>

<service
	name='network/iscsi/target'
	type='service'
	version='1'>

	<create_default_instance enabled='false' />

	<single_instance/>

	<dependency name = 'network'
		grouping='require_any'
		restart_on='error'
		type='service'>
		<service_fmri value='svc:/milestone/network'/>
	</dependency>

	<dependency name = 'stmf'
		grouping='require_all'
		restart_on='none'
		type='service'>
		<service_fmri value='svc:/system/stmf:default'/>
	</dependency>

	<exec_method
		type='method'
		name='start'
		exec='/lib/svc/method/iscsi-target start'
		timeout_seconds='600'>
		<method_context working_directory='/'>
			<method_credential
			user='root'
			group='root'
			privileges='basic,sys_devices'
			/>
		</method_context>
	</exec_method>

	<exec_method
		type='method'
		name='stop'
		exec='/lib/svc/method/iscsi-target stop'
		timeout_seconds='600'>
		<method_context working_directory='/'>
			<method_credential
			user='root'
			group='root'
			privileges='basic,sys_devices'
			/>
		</method_context>
	</exec_method>

	<property_group name='startd' type='framework'>
		<propval name='duration' type='astring'
			value='transient' />
	</property_group>

	<stability value='Evolving' />

	<template>
		<common_name>
			<loctext xml:lang='C'>
				iscsi target
			</loctext>
		</common_name>
		<documentation>
			<manpage title='itadm' section='8'
				manpath='/usr/share/man' />
		</documentation>
	</template>

</service>

</service_bundle>
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <sys/types.h>
#include <unistd.h>
#include <stropts.h>
#include <libintl.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <assert.h>
#include <getopt.h>
#include <cmdparse.h>
#include <signal.h>
#include <pthread.h>
#include <fcntl.h>
#include <locale.h>
#include <sys/systeminfo.h>

#include <libiscsit.h>
#include <sys/iscsit/iscsit_common.h>

static int it_enable(int, char **, cmdOptions_t *, void *);
static int it_disable(int, char **, cmdOptions_t *, void *);

/*
 *  MAJOR - This should only change when there is an incompatible change made
 *  to the interfaces or the output.
 *
 *  MINOR - This should change whenever there is a new command or new feature
 *  with no incompatible change.
 */
#define	VERSION_STRING_MAJOR	    "1"
#define	VERSION_STRING_MINOR	    "0"
#define	VERSION_STRING_MAX_LEN	    10

/* 10 ms sleep in nanoseconds */
#define	TEN_MS_NANOSLEEP  10000000

/* tables set up based on cmdparse instructions */

/* add new options here */
optionTbl_t longOptions[] = {
	{NULL, 0, 0, 0}
};

/*
 * Add new subcommands here
 */
subCommandProps_t subcommands[] = {
	{"start", it_enable, NULL, NULL, NULL, OPERAND_NONE, NULL},
	{"stop", it_disable, NULL, NULL, NULL, OPERAND_NONE, NULL},
	{NULL, 0, NULL, NULL, 0, 0, 0, NULL}
};

/* globals */
char *cmdName;

/*
 * Opens the iSCSI Target Node
 *
 * fd - Return the iscsit file descriptor
 */
static int
it_open(int *fd)
{

	int ret = ITADM_SUCCESS;

	*fd = open(ISCSIT_NODE, O_RDONLY);
	if (*fd < 0) {
		if (errno == EPERM) {
			(void) fprintf(stdout, "open failed: EPERM");
			ret = ITADM_PERM;
		} else {
			(void) fprintf(stdout, "open failed: INVALID");
			ret = ITADM_INVALID;
		}
	}

	return (ret);
}

/*
 * Enables the iSCSI Target
 */
/*ARGSUSED*/
static int
it_enable(int operandLen, char *operands[], cmdOptions_t *options,
    void *args)
{
	int	ret;
	int	fd;
	char	buf[256];
	uint32_t *buflenp;
	char	*fqhnp;
	iscsit_hostinfo_t hostinfo;

	(void) fprintf(stdout, "%s: %s\n", cmdName,
	    gettext("Requesting to enable iscsi target"));

	bzero(buf, 256);
	bzero(hostinfo.fqhn, sizeof (hostinfo.fqhn));

	/* Open the iscsi target node */
	if ((ret = it_open(&fd)) != ITADM_SUCCESS) {
		(void) fprintf(stdout, "Unable to open device %s", ISCSIT_NODE);
		return (ret);
	}

	(void) fprintf(stdout, "it_enable [fd=%d]\n", fd);
	/* enable the iscsi target */
	buflenp = (uint32_t *)((void *)&buf);
	*buflenp = strlen("target_name") + 1;
	(void) strncpy(buf + sizeof (uint32_t), "target_name",
	    256 - sizeof (uint32_t));

	fqhnp = &hostinfo.fqhn[0];

	ret = sysinfo(SI_HOSTNAME, fqhnp, 256);

	if ((ret != -1) && (ret < sizeof (hostinfo.fqhn))) {
		fqhnp += ret;
		hostinfo.length = ret;
		hostinfo.fqhn[ret-1] = '.';
		hostinfo.length += sysinfo(SI_SRPC_DOMAIN, fqhnp,
		    sizeof (hostinfo.fqhn) - ret);
	}

	(void) fprintf(stdout, "it_enable: fqhn = '%s'\n", hostinfo.fqhn);

	if ((ret = ioctl(fd, ISCSIT_IOC_ENABLE_SVC, &hostinfo)) != 0) {
		(void) fprintf(stdout, "Unable to issue ioctl: %d", errno);
		return (ret);
	}
	return (ITADM_SUCCESS);
}


/*
 * Disable the iSCSI target
 */
/* ARGSUSED */
static int
it_disable(int operandLen, char *operands[], cmdOptions_t *options,
    void *args)
{
	int	ret;
	int	fd;

	(void) fprintf(stdout, "%s: %s\n", cmdName,
	    gettext("Requesting to disable iscsi target"));

	/* Open the iscsi target node */
	if ((ret = it_open(&fd)) != ITADM_SUCCESS) {
		return (ret);
	}

	/* disable the iSCSI target */
	if ((ret = ioctl(fd, ISCSIT_IOC_DISABLE_SVC, NULL)) != 0) {
		return (ret);
	}
	return (ITADM_SUCCESS);
}

/*
 * input:
 *  execFullName - exec name of program (argv[0])
 *
 *  copied from usr/src/cmd/zoneadm/zoneadm.c in OS/Net
 *  (changed name to lowerCamelCase to keep consistent with this file)
 *
 * Returns:
 *  command name portion of execFullName
 */
static char *
getExecBasename(char *execFullname)
{
	char *lastSlash, *execBasename;

	/* guard against '/' at end of command invocation */
	for (;;) {
		lastSlash = strrchr(execFullname, '/');
		if (lastSlash == NULL) {
			execBasename = execFullname;
			break;
		} else {
			execBasename = lastSlash + 1;
			if (*execBasename == '\0') {
				*lastSlash = '\0';
				continue;
			}
			break;
		}
	}
	return (execBasename);
}

int
main(int argc, char *argv[])
{
	synTables_t synTables;
	char versionString[VERSION_STRING_MAX_LEN];
	int ret;
	int funcRet;
	void *subcommandArgs = NULL;

	(void) setlocale(LC_ALL, "");
	/* set global command name */
	cmdName = getExecBasename(argv[0]);

	(void) snprintf(versionString, VERSION_STRING_MAX_LEN, "%s.%s",
	    VERSION_STRING_MAJOR, VERSION_STRING_MINOR);
	synTables.versionString = versionString;
	synTables.longOptionTbl = &longOptions[0];
	synTables.subCommandPropsTbl = &subcommands[0];

	ret = cmdParse(argc, argv, synTables, subcommandArgs, &funcRet);
	if (ret != 0) {
		return (ret);
	}

	return (funcRet);
} /* end main */