[thirdparty/linux.git] / tools / hv / hv_kvp_daemon.c

/*
 * An implementation of key value pair (KVP) functionality for Linux.
 *
 *
 * Copyright (C) 2010, Novell, Inc.
 * Author : K. Y. Srinivasan <ksrinivasan@novell.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 * NON INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */


#include <sys/types.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <sys/utsname.h>
#include <linux/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include <linux/connector.h>
#include <linux/hyperv.h>
#include <linux/netlink.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <syslog.h>


/*
 * KVP protocol: The user mode component first registers with the
 * the kernel component. Subsequently, the kernel component requests, data
 * for the specified keys. In response to this message the user mode component
 * fills in the value corresponding to the specified key. We overload the
 * sequence field in the cn_msg header to define our KVP message types.
 *
 * We use this infrastructure for also supporting queries from user mode
 * application for state that may be maintained in the KVP kernel component.
 *
 */


enum key_index {
	FullyQualifiedDomainName = 0,
	IntegrationServicesVersion, /*This key is serviced in the kernel*/
	NetworkAddressIPv4,
	NetworkAddressIPv6,
	OSBuildNumber,
	OSName,
	OSMajorVersion,
	OSMinorVersion,
	OSVersion,
	ProcessorArchitecture
};

static char kvp_send_buffer[4096];
static char kvp_recv_buffer[4096];
static struct sockaddr_nl addr;

static char *os_name = "";
static char *os_major = "";
static char *os_minor = "";
static char *processor_arch;
static char *os_build;
static char *lic_version;
static struct utsname uts_buf;

void kvp_get_os_info(void)
{
	FILE	*file;
	char	*p, buf[512];

	uname(&uts_buf);
	os_build = uts_buf.release;
	processor_arch = uts_buf.machine;

	/*
	 * The current windows host (win7) expects the build
	 * string to be of the form: x.y.z
	 * Strip additional information we may have.
	 */
	p = strchr(os_build, '-');
	if (p)
		*p = '\0';

	file = fopen("/etc/SuSE-release", "r");
	if (file != NULL)
		goto kvp_osinfo_found;
	file  = fopen("/etc/redhat-release", "r");
	if (file != NULL)
		goto kvp_osinfo_found;
	/*
	 * Add code for other supported platforms.
	 */

	/*
	 * We don't have information about the os.
	 */
	os_name = uts_buf.sysname;
	return;

kvp_osinfo_found:
	/* up to three lines */
	p = fgets(buf, sizeof(buf), file);
	if (p) {
		p = strchr(buf, '\n');
		if (p)
			*p = '\0';
		p = strdup(buf);
		if (!p)
			goto done;
		os_name = p;

		/* second line */
		p = fgets(buf, sizeof(buf), file);
		if (p) {
			p = strchr(buf, '\n');
			if (p)
				*p = '\0';
			p = strdup(buf);
			if (!p)
				goto done;
			os_major = p;

			/* third line */
			p = fgets(buf, sizeof(buf), file);
			if (p)  {
				p = strchr(buf, '\n');
				if (p)
					*p = '\0';
				p = strdup(buf);
				if (p)
					os_minor = p;
			}
		}
	}

done:
	fclose(file);
	return;
}

static int
kvp_get_ip_address(int family, char *buffer, int length)
{
	struct ifaddrs *ifap;
	struct ifaddrs *curp;
	int ipv4_len = strlen("255.255.255.255") + 1;
	int ipv6_len = strlen("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")+1;
	int offset = 0;
	const char *str;
	char tmp[50];
	int error = 0;

	/*
	 * On entry into this function, the buffer is capable of holding the
	 * maximum key value (2048 bytes).
	 */

	if (getifaddrs(&ifap)) {
		strcpy(buffer, "getifaddrs failed\n");
		return 1;
	}

	curp = ifap;
	while (curp != NULL) {
		if ((curp->ifa_addr != NULL) &&
		   (curp->ifa_addr->sa_family == family)) {
			if (family == AF_INET) {
				struct sockaddr_in *addr =
				(struct sockaddr_in *) curp->ifa_addr;

				str = inet_ntop(family, &addr->sin_addr,
						tmp, 50);
				if (str == NULL) {
					strcpy(buffer, "inet_ntop failed\n");
					error = 1;
					goto getaddr_done;
				}
				if (offset == 0)
					strcpy(buffer, tmp);
				else
					strcat(buffer, tmp);
				strcat(buffer, ";");

				offset += strlen(str) + 1;
				if ((length - offset) < (ipv4_len + 1))
					goto getaddr_done;

			} else {

			/*
			 * We only support AF_INET and AF_INET6
			 * and the list of addresses is separated by a ";".
			 */
				struct sockaddr_in6 *addr =
				(struct sockaddr_in6 *) curp->ifa_addr;

				str = inet_ntop(family,
					&addr->sin6_addr.s6_addr,
					tmp, 50);
				if (str == NULL) {
					strcpy(buffer, "inet_ntop failed\n");
					error = 1;
					goto getaddr_done;
				}
				if (offset == 0)
					strcpy(buffer, tmp);
				else
					strcat(buffer, tmp);
				strcat(buffer, ";");
				offset += strlen(str) + 1;
				if ((length - offset) < (ipv6_len + 1))
					goto getaddr_done;

			}

		}
		curp = curp->ifa_next;
	}

getaddr_done:
	freeifaddrs(ifap);
	return error;
}


static int
kvp_get_domain_name(char *buffer, int length)
{
	struct addrinfo	hints, *info ;
	int error = 0;

	gethostname(buffer, length);
	memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = AI_CANONNAME;

	error = getaddrinfo(buffer, NULL, &hints, &info);
	if (error != 0) {
		strcpy(buffer, "getaddrinfo failed\n");
		return error;
	}
	strcpy(buffer, info->ai_canonname);
	freeaddrinfo(info);
	return error;
}

static int
netlink_send(int fd, struct cn_msg *msg)
{
	struct nlmsghdr *nlh;
	unsigned int size;
	struct msghdr message;
	char buffer[64];
	struct iovec iov[2];

	size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len);

	nlh = (struct nlmsghdr *)buffer;
	nlh->nlmsg_seq = 0;
	nlh->nlmsg_pid = getpid();
	nlh->nlmsg_type = NLMSG_DONE;
	nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh));
	nlh->nlmsg_flags = 0;

	iov[0].iov_base = nlh;
	iov[0].iov_len = sizeof(*nlh);

	iov[1].iov_base = msg;
	iov[1].iov_len = size;

	memset(&message, 0, sizeof(message));
	message.msg_name = &addr;
	message.msg_namelen = sizeof(addr);
	message.msg_iov = iov;
	message.msg_iovlen = 2;

	return sendmsg(fd, &message, 0);
}

int main(void)
{
	int fd, len, sock_opt;
	int error;
	struct cn_msg *message;
	struct pollfd pfd;
	struct nlmsghdr *incoming_msg;
	struct cn_msg	*incoming_cn_msg;
	struct hv_kvp_msg *hv_msg;
	char	*p;
	char	*key_value;
	char	*key_name;

	daemon(1, 0);
	openlog("KVP", 0, LOG_USER);
	syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
	/*
	 * Retrieve OS release information.
	 */
	kvp_get_os_info();

	fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
	if (fd < 0) {
		syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
		exit(-1);
	}
	addr.nl_family = AF_NETLINK;
	addr.nl_pad = 0;
	addr.nl_pid = 0;
	addr.nl_groups = CN_KVP_IDX;


	error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
	if (error < 0) {
		syslog(LOG_ERR, "bind failed; error:%d", error);
		close(fd);
		exit(-1);
	}
	sock_opt = addr.nl_groups;
	setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt));
	/*
	 * Register ourselves with the kernel.
	 */
	message = (struct cn_msg *)kvp_send_buffer;
	message->id.idx = CN_KVP_IDX;
	message->id.val = CN_KVP_VAL;

	hv_msg = (struct hv_kvp_msg *)message->data;
	hv_msg->kvp_hdr.operation = KVP_OP_REGISTER;
	message->ack = 0;
	message->len = sizeof(struct hv_kvp_msg);

	len = netlink_send(fd, message);
	if (len < 0) {
		syslog(LOG_ERR, "netlink_send failed; error:%d", len);
		close(fd);
		exit(-1);
	}

	pfd.fd = fd;

	while (1) {
		pfd.events = POLLIN;
		pfd.revents = 0;
		poll(&pfd, 1, -1);

		len = recv(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0);

		if (len < 0) {
			syslog(LOG_ERR, "recv failed; error:%d", len);
			close(fd);
			return -1;
		}

		incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
		incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
		hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;

		switch (hv_msg->kvp_hdr.operation) {
		case KVP_OP_REGISTER:
			/*
			 * Driver is registering with us; stash away the version
			 * information.
			 */
			p = (char *)hv_msg->body.kvp_register.version;
			lic_version = malloc(strlen(p) + 1);
			if (lic_version) {
				strcpy(lic_version, p);
				syslog(LOG_INFO, "KVP LIC Version: %s",
					lic_version);
			} else {
				syslog(LOG_ERR, "malloc failed");
			}
			continue;

		case KVP_OP_SET:
		case KVP_OP_GET:
		case KVP_OP_DELETE:
		default:
			break;
		}

		if (hv_msg->kvp_hdr.operation != KVP_OP_ENUMERATE)
			goto kvp_done;

		hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
		key_name = (char *)hv_msg->body.kvp_enum_data.data.key;
		key_value = (char *)hv_msg->body.kvp_enum_data.data.value;

		switch (hv_msg->body.kvp_enum_data.index) {
		case FullyQualifiedDomainName:
			kvp_get_domain_name(key_value,
					HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
			strcpy(key_name, "FullyQualifiedDomainName");
			break;
		case IntegrationServicesVersion:
			strcpy(key_name, "IntegrationServicesVersion");
			strcpy(key_value, lic_version);
			break;
		case NetworkAddressIPv4:
			kvp_get_ip_address(AF_INET, key_value,
					HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
			strcpy(key_name, "NetworkAddressIPv4");
			break;
		case NetworkAddressIPv6:
			kvp_get_ip_address(AF_INET6, key_value,
					HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
			strcpy(key_name, "NetworkAddressIPv6");
			break;
		case OSBuildNumber:
			strcpy(key_value, os_build);
			strcpy(key_name, "OSBuildNumber");
			break;
		case OSName:
			strcpy(key_value, os_name);
			strcpy(key_name, "OSName");
			break;
		case OSMajorVersion:
			strcpy(key_value, os_major);
			strcpy(key_name, "OSMajorVersion");
			break;
		case OSMinorVersion:
			strcpy(key_value, os_minor);
			strcpy(key_name, "OSMinorVersion");
			break;
		case OSVersion:
			strcpy(key_value, os_build);
			strcpy(key_name, "OSVersion");
			break;
		case ProcessorArchitecture:
			strcpy(key_value, processor_arch);
			strcpy(key_name, "ProcessorArchitecture");
			break;
		default:
			strcpy(key_value, "Unknown Key");
			/*
			 * We use a null key name to terminate enumeration.
			 */
			strcpy(key_name, "");
			break;
		}
		/*
		 * Send the value back to the kernel. The response is
		 * already in the receive buffer. Update the cn_msg header to
		 * reflect the key value that has been added to the message
		 */
kvp_done:

		incoming_cn_msg->id.idx = CN_KVP_IDX;
		incoming_cn_msg->id.val = CN_KVP_VAL;
		incoming_cn_msg->ack = 0;
		incoming_cn_msg->len = sizeof(struct hv_kvp_msg);

		len = netlink_send(fd, incoming_cn_msg);
		if (len < 0) {
			syslog(LOG_ERR, "net_link send failed; error:%d", len);
			exit(-1);
		}
	}

}
Commit	Line	Data
cc04acf5 KS	1	/*
	2	* An implementation of key value pair (KVP) functionality for Linux.
	3	*
	4	*
	5	* Copyright (C) 2010, Novell, Inc.
	6	* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License version 2 as published
	10	* by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	15	* NON INFRINGEMENT. See the GNU General Public License for more
	16	* details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	21	*
	22	*/
	23
	24
	25	#include <sys/types.h>
	26	#include <sys/socket.h>
	27	#include <sys/poll.h>
	28	#include <sys/utsname.h>
	29	#include <linux/types.h>
	30	#include <stdio.h>
	31	#include <stdlib.h>
	32	#include <unistd.h>
	33	#include <string.h>
	34	#include <errno.h>
	35	#include <arpa/inet.h>
	36	#include <linux/connector.h>
eab6af71	37	#include <linux/hyperv.h>
cc04acf5	38	#include <linux/netlink.h>
cc04acf5 KS	39	#include <ifaddrs.h>
	40	#include <netdb.h>
	41	#include <syslog.h>
	42
cc04acf5 KS	43
	44	/*
	45	* KVP protocol: The user mode component first registers with the
	46	* the kernel component. Subsequently, the kernel component requests, data
	47	* for the specified keys. In response to this message the user mode component
	48	* fills in the value corresponding to the specified key. We overload the
	49	* sequence field in the cn_msg header to define our KVP message types.
	50	*
	51	* We use this infrastructure for also supporting queries from user mode
	52	* application for state that may be maintained in the KVP kernel component.
	53	*
cc04acf5 KS	54	*/
cc04acf5 KS	55
cc04acf5 KS	56
	57	enum key_index {
	58	FullyQualifiedDomainName = 0,
	59	IntegrationServicesVersion, /This key is serviced in the kernel/
	60	NetworkAddressIPv4,
	61	NetworkAddressIPv6,
	62	OSBuildNumber,
	63	OSName,
	64	OSMajorVersion,
	65	OSMinorVersion,
	66	OSVersion,
	67	ProcessorArchitecture
	68	};
	69
cc04acf5 KS	70	static char kvp_send_buffer[4096];
	71	static char kvp_recv_buffer[4096];
	72	static struct sockaddr_nl addr;
	73
7989f7d5 OH	74	static char *os_name = "";
	75	static char *os_major = "";
	76	static char *os_minor = "";
	77	static char *processor_arch;
	78	static char *os_build;
cc04acf5	79	static char *lic_version;
7989f7d5	80	static struct utsname uts_buf;
cc04acf5 KS	81
	82	void kvp_get_os_info(void)
	83	{
	84	FILE *file;
7989f7d5	85	char *p, buf[512];
cc04acf5	86
7989f7d5 OH	87	uname(&uts_buf);
7989f7d5 OH	88	os_build = uts_buf.release;
064931d0	89	processor_arch = uts_buf.machine;
cc04acf5	90
e54bbc64 S	91	/*
	92	* The current windows host (win7) expects the build
	93	* string to be of the form: x.y.z
	94	* Strip additional information we may have.
	95	*/
	96	p = strchr(os_build, '-');
	97	if (p)
	98	*p = '\0';
	99
cc04acf5 KS	100	file = fopen("/etc/SuSE-release", "r");
	101	if (file != NULL)
	102	goto kvp_osinfo_found;
	103	file = fopen("/etc/redhat-release", "r");
	104	if (file != NULL)
	105	goto kvp_osinfo_found;
	106	/*
	107	* Add code for other supported platforms.
	108	*/
	109
	110	/*
	111	* We don't have information about the os.
	112	*/
7989f7d5	113	os_name = uts_buf.sysname;
cc04acf5 KS	114	return;
	115
	116	kvp_osinfo_found:
7989f7d5 OH	117	/* up to three lines */
	118	p = fgets(buf, sizeof(buf), file);
	119	if (p) {
	120	p = strchr(buf, '\n');
	121	if (p)
	122	*p = '\0';
	123	p = strdup(buf);
	124	if (!p)
	125	goto done;
	126	os_name = p;
	127
	128	/* second line */
	129	p = fgets(buf, sizeof(buf), file);
	130	if (p) {
	131	p = strchr(buf, '\n');
	132	if (p)
	133	*p = '\0';
	134	p = strdup(buf);
	135	if (!p)
	136	goto done;
	137	os_major = p;
	138
	139	/* third line */
	140	p = fgets(buf, sizeof(buf), file);
	141	if (p) {
	142	p = strchr(buf, '\n');
	143	if (p)
	144	*p = '\0';
	145	p = strdup(buf);
	146	if (p)
	147	os_minor = p;
	148	}
	149	}
	150	}
	151
	152	done:
cc04acf5 KS	153	fclose(file);
	154	return;
	155	}
	156
	157	static int
	158	kvp_get_ip_address(int family, char *buffer, int length)
	159	{
	160	struct ifaddrs *ifap;
	161	struct ifaddrs *curp;
	162	int ipv4_len = strlen("255.255.255.255") + 1;
	163	int ipv6_len = strlen("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")+1;
	164	int offset = 0;
	165	const char *str;
	166	char tmp[50];
	167	int error = 0;
	168
	169	/*
	170	* On entry into this function, the buffer is capable of holding the
	171	* maximum key value (2048 bytes).
	172	*/
	173
	174	if (getifaddrs(&ifap)) {
	175	strcpy(buffer, "getifaddrs failed\n");
	176	return 1;
	177	}
	178
	179	curp = ifap;
	180	while (curp != NULL) {
	181	if ((curp->ifa_addr != NULL) &&
	182	(curp->ifa_addr->sa_family == family)) {
	183	if (family == AF_INET) {
	184	struct sockaddr_in *addr =
	185	(struct sockaddr_in *) curp->ifa_addr;
	186
	187	str = inet_ntop(family, &addr->sin_addr,
	188	tmp, 50);
	189	if (str == NULL) {
	190	strcpy(buffer, "inet_ntop failed\n");
	191	error = 1;
	192	goto getaddr_done;
	193	}
	194	if (offset == 0)
	195	strcpy(buffer, tmp);
	196	else
	197	strcat(buffer, tmp);
	198	strcat(buffer, ";");
	199
	200	offset += strlen(str) + 1;
	201	if ((length - offset) < (ipv4_len + 1))
	202	goto getaddr_done;
	203
	204	} else {
	205
	206	/*
	207	* We only support AF_INET and AF_INET6
25985edc	208	* and the list of addresses is separated by a ";".
cc04acf5 KS	209	*/
	210	struct sockaddr_in6 *addr =
	211	(struct sockaddr_in6 *) curp->ifa_addr;
	212
	213	str = inet_ntop(family,
	214	&addr->sin6_addr.s6_addr,
	215	tmp, 50);
	216	if (str == NULL) {
	217	strcpy(buffer, "inet_ntop failed\n");
	218	error = 1;
	219	goto getaddr_done;
	220	}
	221	if (offset == 0)
	222	strcpy(buffer, tmp);
	223	else
	224	strcat(buffer, tmp);
	225	strcat(buffer, ";");
	226	offset += strlen(str) + 1;
	227	if ((length - offset) < (ipv6_len + 1))
	228	goto getaddr_done;
	229
	230	}
	231
	232	}
	233	curp = curp->ifa_next;
	234	}
	235
	236	getaddr_done:
	237	freeifaddrs(ifap);
	238	return error;
	239	}
	240
	241
	242	static int
	243	kvp_get_domain_name(char *buffer, int length)
	244	{
	245	struct addrinfo hints, *info ;
cc04acf5 KS	246	int error = 0;
cc04acf5 KS	247
5be528c2	248	gethostname(buffer, length);
cc04acf5 KS	249	memset(&hints, 0, sizeof(hints));
	250	hints.ai_family = AF_INET; /Get only ipv4 addrinfo. /
	251	hints.ai_socktype = SOCK_STREAM;
	252	hints.ai_flags = AI_CANONNAME;
	253
5be528c2	254	error = getaddrinfo(buffer, NULL, &hints, &info);
cc04acf5 KS	255	if (error != 0) {
cc04acf5 KS	256	strcpy(buffer, "getaddrinfo failed\n");
5be528c2	257	return error;
cc04acf5 KS	258	}
cc04acf5 KS	259	strcpy(buffer, info->ai_canonname);
cc04acf5 KS	260	freeaddrinfo(info);
	261	return error;
	262	}
	263
	264	static int
	265	netlink_send(int fd, struct cn_msg *msg)
	266	{
	267	struct nlmsghdr *nlh;
	268	unsigned int size;
	269	struct msghdr message;
	270	char buffer[64];
	271	struct iovec iov[2];
	272
	273	size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len);
	274
	275	nlh = (struct nlmsghdr *)buffer;
	276	nlh->nlmsg_seq = 0;
	277	nlh->nlmsg_pid = getpid();
	278	nlh->nlmsg_type = NLMSG_DONE;
	279	nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh));
	280	nlh->nlmsg_flags = 0;
	281
	282	iov[0].iov_base = nlh;
	283	iov[0].iov_len = sizeof(*nlh);
	284
	285	iov[1].iov_base = msg;
	286	iov[1].iov_len = size;
	287
	288	memset(&message, 0, sizeof(message));
	289	message.msg_name = &addr;
	290	message.msg_namelen = sizeof(addr);
	291	message.msg_iov = iov;
	292	message.msg_iovlen = 2;
	293
	294	return sendmsg(fd, &message, 0);
	295	}
	296
7989f7d5	297	int main(void)
cc04acf5 KS	298	{
	299	int fd, len, sock_opt;
	300	int error;
	301	struct cn_msg *message;
	302	struct pollfd pfd;
	303	struct nlmsghdr *incoming_msg;
	304	struct cn_msg *incoming_cn_msg;
26403354	305	struct hv_kvp_msg *hv_msg;
7989f7d5	306	char *p;
cc04acf5 KS	307	char *key_value;
cc04acf5 KS	308	char *key_name;
cc04acf5 KS	309
	310	daemon(1, 0);
	311	openlog("KVP", 0, LOG_USER);
	312	syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
	313	/*
	314	* Retrieve OS release information.
	315	*/
	316	kvp_get_os_info();
	317
	318	fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
	319	if (fd < 0) {
	320	syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
	321	exit(-1);
	322	}
	323	addr.nl_family = AF_NETLINK;
	324	addr.nl_pad = 0;
	325	addr.nl_pid = 0;
	326	addr.nl_groups = CN_KVP_IDX;
	327
	328
	329	error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
	330	if (error < 0) {
	331	syslog(LOG_ERR, "bind failed; error:%d", error);
	332	close(fd);
	333	exit(-1);
	334	}
	335	sock_opt = addr.nl_groups;
	336	setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt));
	337	/*
	338	* Register ourselves with the kernel.
	339	*/
	340	message = (struct cn_msg *)kvp_send_buffer;
	341	message->id.idx = CN_KVP_IDX;
	342	message->id.val = CN_KVP_VAL;
26403354 S	343
	344	hv_msg = (struct hv_kvp_msg *)message->data;
	345	hv_msg->kvp_hdr.operation = KVP_OP_REGISTER;
cc04acf5	346	message->ack = 0;
26403354	347	message->len = sizeof(struct hv_kvp_msg);
cc04acf5 KS	348
	349	len = netlink_send(fd, message);
	350	if (len < 0) {
	351	syslog(LOG_ERR, "netlink_send failed; error:%d", len);
	352	close(fd);
	353	exit(-1);
	354	}
	355
	356	pfd.fd = fd;
	357
	358	while (1) {
	359	pfd.events = POLLIN;
	360	pfd.revents = 0;
	361	poll(&pfd, 1, -1);
	362
	363	len = recv(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0);
	364
	365	if (len < 0) {
	366	syslog(LOG_ERR, "recv failed; error:%d", len);
	367	close(fd);
	368	return -1;
	369	}
	370
	371	incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
	372	incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
26403354	373	hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
cc04acf5	374
26403354 S	375	switch (hv_msg->kvp_hdr.operation) {
26403354 S	376	case KVP_OP_REGISTER:
cc04acf5 KS	377	/*
	378	* Driver is registering with us; stash away the version
	379	* information.
	380	*/
e485ceac	381	p = (char *)hv_msg->body.kvp_register.version;
7989f7d5	382	lic_version = malloc(strlen(p) + 1);
cc04acf5	383	if (lic_version) {
7989f7d5	384	strcpy(lic_version, p);
cc04acf5 KS	385	syslog(LOG_INFO, "KVP LIC Version: %s",
	386	lic_version);
	387	} else {
	388	syslog(LOG_ERR, "malloc failed");
	389	}
	390	continue;
	391
fa3d5b85 S	392	case KVP_OP_SET:
	393	case KVP_OP_GET:
	394	case KVP_OP_DELETE:
cc04acf5	395	default:
26403354	396	break;
cc04acf5 KS	397	}
cc04acf5 KS	398
fa3d5b85 S	399	if (hv_msg->kvp_hdr.operation != KVP_OP_ENUMERATE)
	400	goto kvp_done;
	401
26403354 S	402	hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
	403	key_name = (char *)hv_msg->body.kvp_enum_data.data.key;
	404	key_value = (char *)hv_msg->body.kvp_enum_data.data.value;
cc04acf5	405
26403354	406	switch (hv_msg->body.kvp_enum_data.index) {
cc04acf5 KS	407	case FullyQualifiedDomainName:
	408	kvp_get_domain_name(key_value,
	409	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
	410	strcpy(key_name, "FullyQualifiedDomainName");
	411	break;
	412	case IntegrationServicesVersion:
	413	strcpy(key_name, "IntegrationServicesVersion");
	414	strcpy(key_value, lic_version);
	415	break;
	416	case NetworkAddressIPv4:
	417	kvp_get_ip_address(AF_INET, key_value,
	418	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
	419	strcpy(key_name, "NetworkAddressIPv4");
	420	break;
	421	case NetworkAddressIPv6:
	422	kvp_get_ip_address(AF_INET6, key_value,
	423	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
	424	strcpy(key_name, "NetworkAddressIPv6");
	425	break;
	426	case OSBuildNumber:
	427	strcpy(key_value, os_build);
	428	strcpy(key_name, "OSBuildNumber");
	429	break;
	430	case OSName:
	431	strcpy(key_value, os_name);
	432	strcpy(key_name, "OSName");
	433	break;
	434	case OSMajorVersion:
	435	strcpy(key_value, os_major);
	436	strcpy(key_name, "OSMajorVersion");
	437	break;
	438	case OSMinorVersion:
	439	strcpy(key_value, os_minor);
	440	strcpy(key_name, "OSMinorVersion");
	441	break;
	442	case OSVersion:
	443	strcpy(key_value, os_build);
	444	strcpy(key_name, "OSVersion");
	445	break;
	446	case ProcessorArchitecture:
	447	strcpy(key_value, processor_arch);
	448	strcpy(key_name, "ProcessorArchitecture");
	449	break;
	450	default:
	451	strcpy(key_value, "Unknown Key");
	452	/*
	453	* We use a null key name to terminate enumeration.
	454	*/
	455	strcpy(key_name, "");
	456	break;
	457	}
	458	/*
	459	* Send the value back to the kernel. The response is
	460	* already in the receive buffer. Update the cn_msg header to
	461	* reflect the key value that has been added to the message
	462	*/
fa3d5b85	463	kvp_done:
cc04acf5 KS	464
	465	incoming_cn_msg->id.idx = CN_KVP_IDX;
	466	incoming_cn_msg->id.val = CN_KVP_VAL;
cc04acf5	467	incoming_cn_msg->ack = 0;
26403354	468	incoming_cn_msg->len = sizeof(struct hv_kvp_msg);
cc04acf5 KS	469
	470	len = netlink_send(fd, incoming_cn_msg);
	471	if (len < 0) {
	472	syslog(LOG_ERR, "net_link send failed; error:%d", len);
	473	exit(-1);
	474	}
	475	}
	476
	477	}