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bcc2c9c3ff
The SuSE security team suggested to use recvfrom instead of recv to be certain that the connector message is originated from kernel. CVE-2012-2669 Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Marcus Meissner <meissner@suse.de> Signed-off-by: Sebastian Krahmer <krahmer@suse.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
871 lines
20 KiB
C
871 lines
20 KiB
C
/*
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* An implementation of key value pair (KVP) functionality for Linux.
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*
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*
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* Copyright (C) 2010, Novell, Inc.
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* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/poll.h>
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#include <sys/utsname.h>
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#include <linux/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <linux/connector.h>
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#include <linux/hyperv.h>
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#include <linux/netlink.h>
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#include <ifaddrs.h>
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#include <netdb.h>
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#include <syslog.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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/*
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* KVP protocol: The user mode component first registers with the
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* the kernel component. Subsequently, the kernel component requests, data
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* for the specified keys. In response to this message the user mode component
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* fills in the value corresponding to the specified key. We overload the
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* sequence field in the cn_msg header to define our KVP message types.
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*
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* We use this infrastructure for also supporting queries from user mode
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* application for state that may be maintained in the KVP kernel component.
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*
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*/
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enum key_index {
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FullyQualifiedDomainName = 0,
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IntegrationServicesVersion, /*This key is serviced in the kernel*/
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NetworkAddressIPv4,
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NetworkAddressIPv6,
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OSBuildNumber,
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OSName,
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OSMajorVersion,
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OSMinorVersion,
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OSVersion,
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ProcessorArchitecture
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};
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static char kvp_send_buffer[4096];
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static char kvp_recv_buffer[4096];
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static struct sockaddr_nl addr;
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static char *os_name = "";
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static char *os_major = "";
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static char *os_minor = "";
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static char *processor_arch;
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static char *os_build;
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static char *lic_version;
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static struct utsname uts_buf;
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#define MAX_FILE_NAME 100
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#define ENTRIES_PER_BLOCK 50
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struct kvp_record {
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__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
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__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
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};
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struct kvp_file_state {
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int fd;
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int num_blocks;
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struct kvp_record *records;
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int num_records;
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__u8 fname[MAX_FILE_NAME];
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};
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static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT];
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static void kvp_acquire_lock(int pool)
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{
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struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0};
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fl.l_pid = getpid();
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if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) {
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syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool);
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exit(-1);
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}
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}
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static void kvp_release_lock(int pool)
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{
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struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0};
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fl.l_pid = getpid();
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if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) {
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perror("fcntl");
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syslog(LOG_ERR, "Failed to release the lock pool: %d", pool);
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exit(-1);
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}
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}
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static void kvp_update_file(int pool)
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{
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FILE *filep;
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size_t bytes_written;
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/*
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* We are going to write our in-memory registry out to
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* disk; acquire the lock first.
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*/
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kvp_acquire_lock(pool);
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filep = fopen(kvp_file_info[pool].fname, "w");
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if (!filep) {
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kvp_release_lock(pool);
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syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
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exit(-1);
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}
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bytes_written = fwrite(kvp_file_info[pool].records,
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sizeof(struct kvp_record),
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kvp_file_info[pool].num_records, filep);
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fflush(filep);
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kvp_release_lock(pool);
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}
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static void kvp_update_mem_state(int pool)
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{
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FILE *filep;
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size_t records_read = 0;
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struct kvp_record *record = kvp_file_info[pool].records;
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struct kvp_record *readp;
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int num_blocks = kvp_file_info[pool].num_blocks;
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int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK;
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kvp_acquire_lock(pool);
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filep = fopen(kvp_file_info[pool].fname, "r");
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if (!filep) {
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kvp_release_lock(pool);
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syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
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exit(-1);
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}
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while (!feof(filep)) {
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readp = &record[records_read];
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records_read += fread(readp, sizeof(struct kvp_record),
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ENTRIES_PER_BLOCK * num_blocks,
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filep);
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if (!feof(filep)) {
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/*
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* We have more data to read.
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*/
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num_blocks++;
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record = realloc(record, alloc_unit * num_blocks);
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if (record == NULL) {
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syslog(LOG_ERR, "malloc failed");
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exit(-1);
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}
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continue;
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}
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break;
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}
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kvp_file_info[pool].num_blocks = num_blocks;
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kvp_file_info[pool].records = record;
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kvp_file_info[pool].num_records = records_read;
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kvp_release_lock(pool);
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}
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static int kvp_file_init(void)
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{
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int ret, fd;
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FILE *filep;
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size_t records_read;
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__u8 *fname;
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struct kvp_record *record;
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struct kvp_record *readp;
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int num_blocks;
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int i;
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int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK;
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if (access("/var/opt/hyperv", F_OK)) {
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if (mkdir("/var/opt/hyperv", S_IRUSR | S_IWUSR | S_IROTH)) {
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syslog(LOG_ERR, " Failed to create /var/opt/hyperv");
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exit(-1);
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}
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}
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for (i = 0; i < KVP_POOL_COUNT; i++) {
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fname = kvp_file_info[i].fname;
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records_read = 0;
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num_blocks = 1;
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sprintf(fname, "/var/opt/hyperv/.kvp_pool_%d", i);
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fd = open(fname, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR | S_IROTH);
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if (fd == -1)
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return 1;
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filep = fopen(fname, "r");
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if (!filep)
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return 1;
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record = malloc(alloc_unit * num_blocks);
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if (record == NULL) {
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fclose(filep);
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return 1;
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}
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while (!feof(filep)) {
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readp = &record[records_read];
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records_read += fread(readp, sizeof(struct kvp_record),
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ENTRIES_PER_BLOCK,
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filep);
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if (!feof(filep)) {
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/*
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* We have more data to read.
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*/
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num_blocks++;
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record = realloc(record, alloc_unit *
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num_blocks);
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if (record == NULL) {
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fclose(filep);
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return 1;
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}
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continue;
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}
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break;
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}
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kvp_file_info[i].fd = fd;
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kvp_file_info[i].num_blocks = num_blocks;
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kvp_file_info[i].records = record;
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kvp_file_info[i].num_records = records_read;
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fclose(filep);
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}
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return 0;
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}
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static int kvp_key_delete(int pool, __u8 *key, int key_size)
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{
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int i;
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int j, k;
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int num_records;
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struct kvp_record *record;
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/*
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* First update the in-memory state.
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*/
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kvp_update_mem_state(pool);
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num_records = kvp_file_info[pool].num_records;
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record = kvp_file_info[pool].records;
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for (i = 0; i < num_records; i++) {
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if (memcmp(key, record[i].key, key_size))
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continue;
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/*
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* Found a match; just move the remaining
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* entries up.
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*/
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if (i == num_records) {
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kvp_file_info[pool].num_records--;
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kvp_update_file(pool);
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return 0;
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}
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j = i;
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k = j + 1;
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for (; k < num_records; k++) {
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strcpy(record[j].key, record[k].key);
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strcpy(record[j].value, record[k].value);
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j++;
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}
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kvp_file_info[pool].num_records--;
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kvp_update_file(pool);
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return 0;
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}
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return 1;
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}
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static int kvp_key_add_or_modify(int pool, __u8 *key, int key_size, __u8 *value,
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int value_size)
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{
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int i;
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int j, k;
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int num_records;
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struct kvp_record *record;
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int num_blocks;
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if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) ||
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(value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE))
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return 1;
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/*
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* First update the in-memory state.
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*/
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kvp_update_mem_state(pool);
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num_records = kvp_file_info[pool].num_records;
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record = kvp_file_info[pool].records;
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num_blocks = kvp_file_info[pool].num_blocks;
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for (i = 0; i < num_records; i++) {
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if (memcmp(key, record[i].key, key_size))
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continue;
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/*
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* Found a match; just update the value -
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* this is the modify case.
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*/
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memcpy(record[i].value, value, value_size);
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kvp_update_file(pool);
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return 0;
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}
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/*
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* Need to add a new entry;
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*/
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if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) {
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/* Need to allocate a larger array for reg entries. */
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record = realloc(record, sizeof(struct kvp_record) *
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ENTRIES_PER_BLOCK * (num_blocks + 1));
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if (record == NULL)
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return 1;
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kvp_file_info[pool].num_blocks++;
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}
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memcpy(record[i].value, value, value_size);
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memcpy(record[i].key, key, key_size);
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kvp_file_info[pool].records = record;
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kvp_file_info[pool].num_records++;
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kvp_update_file(pool);
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return 0;
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}
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static int kvp_get_value(int pool, __u8 *key, int key_size, __u8 *value,
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int value_size)
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{
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int i;
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int num_records;
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struct kvp_record *record;
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if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) ||
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(value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE))
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return 1;
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/*
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* First update the in-memory state.
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*/
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kvp_update_mem_state(pool);
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num_records = kvp_file_info[pool].num_records;
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record = kvp_file_info[pool].records;
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for (i = 0; i < num_records; i++) {
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if (memcmp(key, record[i].key, key_size))
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continue;
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/*
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* Found a match; just copy the value out.
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*/
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memcpy(value, record[i].value, value_size);
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return 0;
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}
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return 1;
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}
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static void kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size,
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__u8 *value, int value_size)
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{
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struct kvp_record *record;
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/*
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* First update our in-memory database.
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*/
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kvp_update_mem_state(pool);
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record = kvp_file_info[pool].records;
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if (index >= kvp_file_info[pool].num_records) {
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/*
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* This is an invalid index; terminate enumeration;
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* - a NULL value will do the trick.
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*/
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strcpy(value, "");
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return;
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}
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memcpy(key, record[index].key, key_size);
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memcpy(value, record[index].value, value_size);
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}
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void kvp_get_os_info(void)
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{
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FILE *file;
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char *p, buf[512];
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uname(&uts_buf);
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os_build = uts_buf.release;
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processor_arch = uts_buf.machine;
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/*
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* The current windows host (win7) expects the build
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* string to be of the form: x.y.z
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* Strip additional information we may have.
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*/
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p = strchr(os_build, '-');
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if (p)
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*p = '\0';
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file = fopen("/etc/SuSE-release", "r");
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if (file != NULL)
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goto kvp_osinfo_found;
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file = fopen("/etc/redhat-release", "r");
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if (file != NULL)
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goto kvp_osinfo_found;
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/*
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* Add code for other supported platforms.
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*/
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/*
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* We don't have information about the os.
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*/
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os_name = uts_buf.sysname;
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return;
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kvp_osinfo_found:
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/* up to three lines */
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p = fgets(buf, sizeof(buf), file);
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if (p) {
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p = strchr(buf, '\n');
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if (p)
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*p = '\0';
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p = strdup(buf);
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if (!p)
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goto done;
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os_name = p;
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/* second line */
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p = fgets(buf, sizeof(buf), file);
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if (p) {
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p = strchr(buf, '\n');
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if (p)
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*p = '\0';
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p = strdup(buf);
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if (!p)
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goto done;
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os_major = p;
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/* third line */
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p = fgets(buf, sizeof(buf), file);
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if (p) {
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p = strchr(buf, '\n');
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if (p)
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*p = '\0';
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p = strdup(buf);
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if (p)
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os_minor = p;
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}
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}
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}
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done:
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fclose(file);
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return;
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}
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static int
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kvp_get_ip_address(int family, char *buffer, int length)
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{
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struct ifaddrs *ifap;
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struct ifaddrs *curp;
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int ipv4_len = strlen("255.255.255.255") + 1;
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int ipv6_len = strlen("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")+1;
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int offset = 0;
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const char *str;
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char tmp[50];
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int error = 0;
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/*
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* On entry into this function, the buffer is capable of holding the
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* maximum key value (2048 bytes).
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*/
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if (getifaddrs(&ifap)) {
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strcpy(buffer, "getifaddrs failed\n");
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return 1;
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}
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curp = ifap;
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while (curp != NULL) {
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if ((curp->ifa_addr != NULL) &&
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(curp->ifa_addr->sa_family == family)) {
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if (family == AF_INET) {
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struct sockaddr_in *addr =
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(struct sockaddr_in *) curp->ifa_addr;
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str = inet_ntop(family, &addr->sin_addr,
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tmp, 50);
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if (str == NULL) {
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strcpy(buffer, "inet_ntop failed\n");
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error = 1;
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goto getaddr_done;
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}
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if (offset == 0)
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strcpy(buffer, tmp);
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else
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strcat(buffer, tmp);
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strcat(buffer, ";");
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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();
|
|
|
|
if (kvp_file_init()) {
|
|
syslog(LOG_ERR, "Failed to initialize the pools");
|
|
exit(-1);
|
|
}
|
|
|
|
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) {
|
|
struct sockaddr *addr_p = (struct sockaddr *) &addr;
|
|
socklen_t addr_l = sizeof(addr);
|
|
pfd.events = POLLIN;
|
|
pfd.revents = 0;
|
|
poll(&pfd, 1, -1);
|
|
|
|
len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0,
|
|
addr_p, &addr_l);
|
|
|
|
if (len < 0 || addr.nl_pid) {
|
|
syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s",
|
|
addr.nl_pid, errno, strerror(errno));
|
|
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;
|
|
|
|
/*
|
|
* The current protocol with the kernel component uses a
|
|
* NULL key name to pass an error condition.
|
|
* For the SET, GET and DELETE operations,
|
|
* use the existing protocol to pass back error.
|
|
*/
|
|
|
|
case KVP_OP_SET:
|
|
if (kvp_key_add_or_modify(hv_msg->kvp_hdr.pool,
|
|
hv_msg->body.kvp_set.data.key,
|
|
hv_msg->body.kvp_set.data.key_size,
|
|
hv_msg->body.kvp_set.data.value,
|
|
hv_msg->body.kvp_set.data.value_size))
|
|
strcpy(hv_msg->body.kvp_set.data.key, "");
|
|
break;
|
|
|
|
case KVP_OP_GET:
|
|
if (kvp_get_value(hv_msg->kvp_hdr.pool,
|
|
hv_msg->body.kvp_set.data.key,
|
|
hv_msg->body.kvp_set.data.key_size,
|
|
hv_msg->body.kvp_set.data.value,
|
|
hv_msg->body.kvp_set.data.value_size))
|
|
strcpy(hv_msg->body.kvp_set.data.key, "");
|
|
break;
|
|
|
|
case KVP_OP_DELETE:
|
|
if (kvp_key_delete(hv_msg->kvp_hdr.pool,
|
|
hv_msg->body.kvp_delete.key,
|
|
hv_msg->body.kvp_delete.key_size))
|
|
strcpy(hv_msg->body.kvp_delete.key, "");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (hv_msg->kvp_hdr.operation != KVP_OP_ENUMERATE)
|
|
goto kvp_done;
|
|
|
|
/*
|
|
* If the pool is KVP_POOL_AUTO, dynamically generate
|
|
* both the key and the value; if not read from the
|
|
* appropriate pool.
|
|
*/
|
|
if (hv_msg->kvp_hdr.pool != KVP_POOL_AUTO) {
|
|
kvp_pool_enumerate(hv_msg->kvp_hdr.pool,
|
|
hv_msg->body.kvp_enum_data.index,
|
|
hv_msg->body.kvp_enum_data.data.key,
|
|
HV_KVP_EXCHANGE_MAX_KEY_SIZE,
|
|
hv_msg->body.kvp_enum_data.data.value,
|
|
HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
|
|
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);
|
|
}
|
|
}
|
|
|
|
}
|