[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / hv / tools / 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/netlink.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <syslog.h>

/*
 * KYS: TODO. Need to register these in the kernel.
 *
 * The following definitions are shared with the in-kernel component; do not
 * change any of this without making the corresponding changes in
 * the KVP kernel component.
 */
#define CN_KVP_IDX		0x9     /* MSFT KVP functionality */
#define CN_KVP_VAL		0x1 /* This supports queries from the kernel */
#define CN_KVP_USER_VAL		0x2 /* This supports queries from the user  */

/*
 * 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.
 *
 * XXXKYS: Have a shared header file between the user and kernel (TODO)
 */

enum kvp_op {
	KVP_REGISTER = 0, /* Register the user mode component*/
	KVP_KERNEL_GET, /*Kernel is requesting the value for the specified key*/
	KVP_KERNEL_SET, /*Kernel is providing the value for the specified key*/
	KVP_USER_GET, /*User is requesting the value for the specified key*/
	KVP_USER_SET /*User is providing the value for the specified key*/
};

#define HV_KVP_EXCHANGE_MAX_KEY_SIZE	512
#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE	2048

struct hv_ku_msg {
	__u32	kvp_index;
	__u8  kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */
	__u8  kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key  value */
};

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

/*
 * End of shared definitions.
 */

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

static char os_name[100];
static char os_major[50];
static char os_minor[50];
static char processor_arch[50];
static char os_build[100];
static char *lic_version;

void kvp_get_os_info(void)
{
	FILE	*file;
	char	*eol;
	struct utsname buf;

	uname(&buf);
	strcpy(os_build, buf.release);
	strcpy(processor_arch, buf.machine);

	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.
	 */
	strcpy(os_name, "Linux");
	strcpy(os_major, "0");
	strcpy(os_minor, "0");
	return;

kvp_osinfo_found:
	fgets(os_name, 99, file);
	eol = index(os_name, '\n');
	*eol = '\0';
	fgets(os_major, 49, file);
	eol = index(os_major, '\n');
	*eol = '\0';
	fgets(os_minor, 49, file);
	eol = index(os_minor, '\n');
	*eol = '\0';
	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 seperated 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 ;
	gethostname(buffer, length);
	int error = 0;

	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, "http", &hints, &info);
	if (error != 0) {
		strcpy(buffer, "getaddrinfo failed\n");
		error = 1;
		goto get_domain_done;
	}
	strcpy(buffer, info->ai_canonname);
get_domain_done:
	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);
}

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;
	char	*key_value;
	char	*key_name;
	int	 key_index;

	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;
	message->seq = KVP_REGISTER;
	message->ack = 0;
	message->len = 0;

	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);

		switch (incoming_cn_msg->seq) {
		case KVP_REGISTER:
			/*
			 * Driver is registering with us; stash away the version
			 * information.
			 */
			lic_version = malloc(strlen(incoming_cn_msg->data) + 1);
			if (lic_version) {
				strcpy(lic_version, incoming_cn_msg->data);
				syslog(LOG_INFO, "KVP LIC Version: %s",
					lic_version);
			} else {
				syslog(LOG_ERR, "malloc failed");
			}
			continue;

		case KVP_KERNEL_GET:
			break;
		default:
			continue;
		}

		key_index =
		((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_index;
		key_name =
		((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_key;
		key_value =
		((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_value;

		switch (key_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
		 */

		incoming_cn_msg->id.idx = CN_KVP_IDX;
		incoming_cn_msg->id.val = CN_KVP_VAL;
		incoming_cn_msg->seq = KVP_USER_SET;
		incoming_cn_msg->ack = 0;
		incoming_cn_msg->len = sizeof(struct hv_ku_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>
	37	#include <linux/netlink.h>
	38	#include <sys/socket.h>
	39	#include <ifaddrs.h>
	40	#include <netdb.h>
	41	#include <syslog.h>
	42
	43	/*
	44	* KYS: TODO. Need to register these in the kernel.
	45	*
	46	* The following definitions are shared with the in-kernel component; do not
	47	* change any of this without making the corresponding changes in
	48	* the KVP kernel component.
	49	*/
	50	#define CN_KVP_IDX 0x9 /* MSFT KVP functionality */
	51	#define CN_KVP_VAL 0x1 /* This supports queries from the kernel */
	52	#define CN_KVP_USER_VAL 0x2 /* This supports queries from the user */
	53
	54	/*
	55	* KVP protocol: The user mode component first registers with the
	56	* the kernel component. Subsequently, the kernel component requests, data
	57	* for the specified keys. In response to this message the user mode component
	58	* fills in the value corresponding to the specified key. We overload the
	59	* sequence field in the cn_msg header to define our KVP message types.
	60	*
	61	* We use this infrastructure for also supporting queries from user mode
	62	* application for state that may be maintained in the KVP kernel component.
	63	*
	64	* XXXKYS: Have a shared header file between the user and kernel (TODO)
65	*/
66
67	enum kvp_op {
68	KVP_REGISTER = 0, /* Register the user mode component*/
69	KVP_KERNEL_GET, /Kernel is requesting the value for the specified key/
70	KVP_KERNEL_SET, /Kernel is providing the value for the specified key/
71	KVP_USER_GET, /User is requesting the value for the specified key/
72	KVP_USER_SET /User is providing the value for the specified key/
73	};
74
75	#define HV_KVP_EXCHANGE_MAX_KEY_SIZE 512
76	#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE 2048
77
78	struct hv_ku_msg {
79	__u32 kvp_index;
80	__u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */
81	__u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */
82	};
83
84	enum key_index {
85	FullyQualifiedDomainName = 0,
86	IntegrationServicesVersion, /This key is serviced in the kernel/
87	NetworkAddressIPv4,
88	NetworkAddressIPv6,
89	OSBuildNumber,
90	OSName,
91	OSMajorVersion,
92	OSMinorVersion,
93	OSVersion,
94	ProcessorArchitecture
95	};
96
97	/*
98	* End of shared definitions.
99	*/
100
101	static char kvp_send_buffer[4096];
102	static char kvp_recv_buffer[4096];
103	static struct sockaddr_nl addr;
104
105	static char os_name[100];
106	static char os_major[50];
107	static char os_minor[50];
108	static char processor_arch[50];
109	static char os_build[100];
110	static char *lic_version;
111
112	void kvp_get_os_info(void)
113	{
114	FILE *file;
115	char *eol;
116	struct utsname buf;
117
118	uname(&buf);
119	strcpy(os_build, buf.release);
120	strcpy(processor_arch, buf.machine);
121
122	file = fopen("/etc/SuSE-release", "r");
123	if (file != NULL)
124	goto kvp_osinfo_found;
125	file = fopen("/etc/redhat-release", "r");
126	if (file != NULL)
127	goto kvp_osinfo_found;
128	/*
129	* Add code for other supported platforms.
130	*/
131
132	/*
133	* We don't have information about the os.
134	*/
135	strcpy(os_name, "Linux");
136	strcpy(os_major, "0");
137	strcpy(os_minor, "0");
138	return;
139
140	kvp_osinfo_found:
141	fgets(os_name, 99, file);
142	eol = index(os_name, '\n');
143	*eol = '\0';
144	fgets(os_major, 49, file);
145	eol = index(os_major, '\n');
146	*eol = '\0';
147	fgets(os_minor, 49, file);
148	eol = index(os_minor, '\n');
149	*eol = '\0';
150	fclose(file);
151	return;
152	}
153
154	static int
155	kvp_get_ip_address(int family, char *buffer, int length)
156	{
157	struct ifaddrs *ifap;
158	struct ifaddrs *curp;
159	int ipv4_len = strlen("255.255.255.255") + 1;
160	int ipv6_len = strlen("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")+1;
161	int offset = 0;
162	const char *str;
163	char tmp[50];
164	int error = 0;
165
166	/*
167	* On entry into this function, the buffer is capable of holding the
168	* maximum key value (2048 bytes).
169	*/
170
171	if (getifaddrs(&ifap)) {
172	strcpy(buffer, "getifaddrs failed\n");
173	return 1;
174	}
175
176	curp = ifap;
177	while (curp != NULL) {
178	if ((curp->ifa_addr != NULL) &&
179	(curp->ifa_addr->sa_family == family)) {
180	if (family == AF_INET) {
181	struct sockaddr_in *addr =
182	(struct sockaddr_in *) curp->ifa_addr;
183
184	str = inet_ntop(family, &addr->sin_addr,
185	tmp, 50);
186	if (str == NULL) {
187	strcpy(buffer, "inet_ntop failed\n");
188	error = 1;
189	goto getaddr_done;
190	}
191	if (offset == 0)
192	strcpy(buffer, tmp);
193	else
194	strcat(buffer, tmp);
195	strcat(buffer, ";");
196
197	offset += strlen(str) + 1;
198	if ((length - offset) < (ipv4_len + 1))
199	goto getaddr_done;
200
201	} else {
202
203	/*
204	* We only support AF_INET and AF_INET6
205	* and the list of addresses is seperated by a ";".
206	*/
207	struct sockaddr_in6 *addr =
208	(struct sockaddr_in6 *) curp->ifa_addr;
209
210	str = inet_ntop(family,
211	&addr->sin6_addr.s6_addr,
212	tmp, 50);
213	if (str == NULL) {
214	strcpy(buffer, "inet_ntop failed\n");
215	error = 1;
216	goto getaddr_done;
217	}
218	if (offset == 0)
219	strcpy(buffer, tmp);
220	else
221	strcat(buffer, tmp);
222	strcat(buffer, ";");
223	offset += strlen(str) + 1;
224	if ((length - offset) < (ipv6_len + 1))
225	goto getaddr_done;
226
227	}
228
229	}
230	curp = curp->ifa_next;
231	}
232
233	getaddr_done:
234	freeifaddrs(ifap);
235	return error;
236	}
237
238
239	static int
240	kvp_get_domain_name(char *buffer, int length)
241	{
242	struct addrinfo hints, *info ;
243	gethostname(buffer, length);
244	int error = 0;
245
246	memset(&hints, 0, sizeof(hints));
247	hints.ai_family = AF_INET; /Get only ipv4 addrinfo. /
248	hints.ai_socktype = SOCK_STREAM;
249	hints.ai_flags = AI_CANONNAME;
250
251	error = getaddrinfo(buffer, "http", &hints, &info);
252	if (error != 0) {
253	strcpy(buffer, "getaddrinfo failed\n");
254	error = 1;
255	goto get_domain_done;
256	}
257	strcpy(buffer, info->ai_canonname);
258	get_domain_done:
259	freeaddrinfo(info);
260	return error;
261	}
262
263	static int
264	netlink_send(int fd, struct cn_msg *msg)
265	{
266	struct nlmsghdr *nlh;
267	unsigned int size;
268	struct msghdr message;
269	char buffer[64];
270	struct iovec iov[2];
271
272	size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len);
273
274	nlh = (struct nlmsghdr *)buffer;
275	nlh->nlmsg_seq = 0;
276	nlh->nlmsg_pid = getpid();
277	nlh->nlmsg_type = NLMSG_DONE;
278	nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh));
279	nlh->nlmsg_flags = 0;
280
281	iov[0].iov_base = nlh;
282	iov[0].iov_len = sizeof(*nlh);
283
284	iov[1].iov_base = msg;
285	iov[1].iov_len = size;
286
287	memset(&message, 0, sizeof(message));
288	message.msg_name = &addr;
289	message.msg_namelen = sizeof(addr);
290	message.msg_iov = iov;
291	message.msg_iovlen = 2;
292
293	return sendmsg(fd, &message, 0);
294	}
295
296	main(void)
297	{
298	int fd, len, sock_opt;
299	int error;
300	struct cn_msg *message;
301	struct pollfd pfd;
302	struct nlmsghdr *incoming_msg;
303	struct cn_msg *incoming_cn_msg;
304	char *key_value;
305	char *key_name;
306	int key_index;
307
308	daemon(1, 0);
309	openlog("KVP", 0, LOG_USER);
310	syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
311	/*
312	* Retrieve OS release information.
313	*/
314	kvp_get_os_info();
315
316	fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
317	if (fd < 0) {
318	syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
319	exit(-1);
320	}
321	addr.nl_family = AF_NETLINK;
322	addr.nl_pad = 0;
323	addr.nl_pid = 0;
324	addr.nl_groups = CN_KVP_IDX;
325
326
327	error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
328	if (error < 0) {
329	syslog(LOG_ERR, "bind failed; error:%d", error);
330	close(fd);
331	exit(-1);
332	}
333	sock_opt = addr.nl_groups;
334	setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt));
335	/*
336	* Register ourselves with the kernel.
337	*/
338	message = (struct cn_msg *)kvp_send_buffer;
339	message->id.idx = CN_KVP_IDX;
340	message->id.val = CN_KVP_VAL;
341	message->seq = KVP_REGISTER;
342	message->ack = 0;
343	message->len = 0;
344
345	len = netlink_send(fd, message);
346	if (len < 0) {
347	syslog(LOG_ERR, "netlink_send failed; error:%d", len);
348	close(fd);
349	exit(-1);
350	}
351
352	pfd.fd = fd;
353
354	while (1) {
355	pfd.events = POLLIN;
356	pfd.revents = 0;
357	poll(&pfd, 1, -1);
358
359	len = recv(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0);
360
361	if (len < 0) {
362	syslog(LOG_ERR, "recv failed; error:%d", len);
363	close(fd);
364	return -1;
365	}
366
367	incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
368	incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
369
370	switch (incoming_cn_msg->seq) {
371	case KVP_REGISTER:
372	/*
373	* Driver is registering with us; stash away the version
374	* information.
375	*/
376	lic_version = malloc(strlen(incoming_cn_msg->data) + 1);
377	if (lic_version) {
378	strcpy(lic_version, incoming_cn_msg->data);
379	syslog(LOG_INFO, "KVP LIC Version: %s",
380	lic_version);
381	} else {
382	syslog(LOG_ERR, "malloc failed");
383	}
384	continue;
385
386	case KVP_KERNEL_GET:
387	break;
388	default:
389	continue;
390	}
391
392	key_index =
393	((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_index;
394	key_name =
395	((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_key;
396	key_value =
397	((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_value;
398
399	switch (key_index) {
400	case FullyQualifiedDomainName:
401	kvp_get_domain_name(key_value,
402	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
403	strcpy(key_name, "FullyQualifiedDomainName");
404	break;
405	case IntegrationServicesVersion:
406	strcpy(key_name, "IntegrationServicesVersion");
407	strcpy(key_value, lic_version);
408	break;
409	case NetworkAddressIPv4:
410	kvp_get_ip_address(AF_INET, key_value,
411	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
412	strcpy(key_name, "NetworkAddressIPv4");
413	break;
414	case NetworkAddressIPv6:
415	kvp_get_ip_address(AF_INET6, key_value,
416	HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
417	strcpy(key_name, "NetworkAddressIPv6");
418	break;
419	case OSBuildNumber:
420	strcpy(key_value, os_build);
421	strcpy(key_name, "OSBuildNumber");
422	break;
423	case OSName:
424	strcpy(key_value, os_name);
425	strcpy(key_name, "OSName");
426	break;
427	case OSMajorVersion:
428	strcpy(key_value, os_major);
429	strcpy(key_name, "OSMajorVersion");
430	break;
431	case OSMinorVersion:
432	strcpy(key_value, os_minor);
433	strcpy(key_name, "OSMinorVersion");
434	break;
435	case OSVersion:
436	strcpy(key_value, os_build);
437	strcpy(key_name, "OSVersion");
438	break;
439	case ProcessorArchitecture:
440	strcpy(key_value, processor_arch);
441	strcpy(key_name, "ProcessorArchitecture");
442	break;
443	default:
444	strcpy(key_value, "Unknown Key");
445	/*
446	* We use a null key name to terminate enumeration.
447	*/
448	strcpy(key_name, "");
449	break;
450	}
451	/*
452	* Send the value back to the kernel. The response is
453	* already in the receive buffer. Update the cn_msg header to
454	* reflect the key value that has been added to the message
455	*/
456
457	incoming_cn_msg->id.idx = CN_KVP_IDX;
458	incoming_cn_msg->id.val = CN_KVP_VAL;
459	incoming_cn_msg->seq = KVP_USER_SET;
460	incoming_cn_msg->ack = 0;
461	incoming_cn_msg->len = sizeof(struct hv_ku_msg);
462
463	len = netlink_send(fd, incoming_cn_msg);
464	if (len < 0) {
465	syslog(LOG_ERR, "net_link send failed; error:%d", len);
466	exit(-1);
467	}
468	}
469
470	}