Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1519 commits)
staging: et131x: Remove redundant check and return statement
staging: et131x: Mainly whitespace changes to appease checkpatch
staging: et131x: Remove last of the forward declarations
staging: et131x: Remove even more forward declarations
staging: et131x: Remove yet more forward declarations
staging: et131x: Remove more forward declarations
staging: et131x: Remove forward declaration of et131x_adapter_setup
staging: et131x: Remove some forward declarations
staging: et131x: Remove unused rx_ring.recv_packet_pool
staging: et131x: Remove call to find pci pm capability
staging: et131x: Remove redundant et131x_reset_recv() call
staging: et131x: Remove unused rx_ring.recv_buffer_pool
Staging: bcm: Fix three initialization errors in InterfaceDld.c
Staging: bcm: Fix coding style issues in InterfaceDld.c
staging:iio:dac: Add AD5360 driver
staging:iio:trigger:bfin-timer: Fix compile error
Staging: vt6655: add some range checks before memcpy()
Staging: vt6655: whitespace fixes to iotcl.c
Staging: vt6656: add some range checks before memcpy()
Staging: vt6656: whitespace cleanups in ioctl.c
...
Fix up conflicts in:
- drivers/{Kconfig,Makefile}, drivers/staging/{Kconfig,Makefile}:
vg driver movement
- drivers/staging/brcm80211/brcmfmac/{dhd_linux.c,mac80211_if.c}:
driver removal vs now stale changes
- drivers/staging/rtl8192e/r8192E_core.c:
driver removal vs now stale changes
- drivers/staging/et131x/et131*:
driver consolidation into one file, tried to do fixups
This commit is contained in:
Linus Torvalds
500
tools/hv/hv_kvp_daemon.c
Normal file
500
tools/hv/hv_kvp_daemon.c
Normal file
@ -0,0 +1,500 @@
|
||||
/*
|
||||
* 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 <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 = "";
|
||||
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;
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||||
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_ku_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;
|
||||
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.
|
||||
*/
|
||||
p = (char *)incoming_cn_msg->data;
|
||||
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_KERNEL_GET:
|
||||
break;
|
||||
default:
|
||||
continue;
|
||||
}
|
||||
|
||||
hv_msg = (struct hv_ku_msg *)incoming_cn_msg->data;
|
||||
key_name = (char *)hv_msg->kvp_key;
|
||||
key_value = (char *)hv_msg->kvp_value;
|
||||
|
||||
switch (hv_msg->kvp_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);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user