diff options
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/hv/hv_get_dhcp_info.sh | 28 | ||||
| -rwxr-xr-x | tools/hv/hv_get_dns_info.sh | 13 | ||||
| -rw-r--r-- | tools/hv/hv_kvp_daemon.c | 1036 | ||||
| -rwxr-xr-x | tools/hv/hv_set_ifconfig.sh | 68 |
4 files changed, 1033 insertions, 112 deletions
diff --git a/tools/hv/hv_get_dhcp_info.sh b/tools/hv/hv_get_dhcp_info.sh new file mode 100755 index 000000000000..ccd3e9532764 --- /dev/null +++ b/tools/hv/hv_get_dhcp_info.sh @@ -0,0 +1,28 @@ +#!/bin/bash + +# This example script retrieves the DHCP state of a given interface. +# In the interest of keeping the KVP daemon code free of distro specific +# information; the kvp daemon code invokes this external script to gather +# DHCP setting for the specific interface. +# +# Input: Name of the interface +# +# Output: The script prints the string "Enabled" to stdout to indicate +# that DHCP is enabled on the interface. If DHCP is not enabled, +# the script prints the string "Disabled" to stdout. +# +# Each Distro is expected to implement this script in a distro specific +# fashion. For instance on Distros that ship with Network Manager enabled, +# this script can be based on the Network Manager APIs for retrieving DHCP +# information. + +if_file="/etc/sysconfig/network-scripts/ifcfg-"$1 + +dhcp=$(grep "dhcp" $if_file 2>/dev/null) + +if [ "$dhcp" != "" ]; +then +echo "Enabled" +else +echo "Disabled" +fi diff --git a/tools/hv/hv_get_dns_info.sh b/tools/hv/hv_get_dns_info.sh new file mode 100755 index 000000000000..058c17b46ffc --- /dev/null +++ b/tools/hv/hv_get_dns_info.sh @@ -0,0 +1,13 @@ +#!/bin/bash + +# This example script parses /etc/resolv.conf to retrive DNS information. +# In the interest of keeping the KVP daemon code free of distro specific +# information; the kvp daemon code invokes this external script to gather +# DNS information. +# This script is expected to print the nameserver values to stdout. +# Each Distro is expected to implement this script in a distro specific +# fashion. For instance on Distros that ship with Network Manager enabled, +# this script can be based on the Network Manager APIs for retrieving DNS +# entries. + +cat /etc/resolv.conf 2>/dev/null | awk '/^nameserver/ { print $2 }' diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index d9834b362943..5959affd8820 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -31,6 +31,7 @@ #include <stdlib.h> #include <unistd.h> #include <string.h> +#include <ctype.h> #include <errno.h> #include <arpa/inet.h> #include <linux/connector.h> @@ -41,6 +42,7 @@ #include <syslog.h> #include <sys/stat.h> #include <fcntl.h> +#include <dirent.h> /* * KVP protocol: The user mode component first registers with the @@ -68,25 +70,39 @@ enum key_index { ProcessorArchitecture }; + +enum { + IPADDR = 0, + NETMASK, + GATEWAY, + DNS +}; + static char kvp_send_buffer[4096]; -static char kvp_recv_buffer[4096]; +static char kvp_recv_buffer[4096 * 2]; static struct sockaddr_nl addr; +static int in_hand_shake = 1; 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 char *lic_version = "Unknown version"; static struct utsname uts_buf; +/* + * The location of the interface configuration file. + */ + +#define KVP_CONFIG_LOC "/var/opt/" #define MAX_FILE_NAME 100 #define ENTRIES_PER_BLOCK 50 struct kvp_record { - __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; - __u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; + char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; + char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; }; struct kvp_file_state { @@ -94,7 +110,7 @@ struct kvp_file_state { int num_blocks; struct kvp_record *records; int num_records; - __u8 fname[MAX_FILE_NAME]; + char fname[MAX_FILE_NAME]; }; static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; @@ -106,7 +122,7 @@ static void kvp_acquire_lock(int pool) if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool); - exit(-1); + exit(EXIT_FAILURE); } } @@ -118,7 +134,7 @@ static void kvp_release_lock(int pool) if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { perror("fcntl"); syslog(LOG_ERR, "Failed to release the lock pool: %d", pool); - exit(-1); + exit(EXIT_FAILURE); } } @@ -137,14 +153,19 @@ static void kvp_update_file(int pool) if (!filep) { kvp_release_lock(pool); syslog(LOG_ERR, "Failed to open file, pool: %d", pool); - exit(-1); + exit(EXIT_FAILURE); } bytes_written = fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record), kvp_file_info[pool].num_records, filep); - fflush(filep); + if (ferror(filep) || fclose(filep)) { + kvp_release_lock(pool); + syslog(LOG_ERR, "Failed to write file, pool: %d", pool); + exit(EXIT_FAILURE); + } + kvp_release_lock(pool); } @@ -163,14 +184,19 @@ static void kvp_update_mem_state(int pool) if (!filep) { kvp_release_lock(pool); syslog(LOG_ERR, "Failed to open file, pool: %d", pool); - exit(-1); + exit(EXIT_FAILURE); } - while (!feof(filep)) { + for (;;) { readp = &record[records_read]; records_read += fread(readp, sizeof(struct kvp_record), ENTRIES_PER_BLOCK * num_blocks, filep); + if (ferror(filep)) { + syslog(LOG_ERR, "Failed to read file, pool: %d", pool); + exit(EXIT_FAILURE); + } + if (!feof(filep)) { /* * We have more data to read. @@ -180,7 +206,7 @@ static void kvp_update_mem_state(int pool) if (record == NULL) { syslog(LOG_ERR, "malloc failed"); - exit(-1); + exit(EXIT_FAILURE); } continue; } @@ -191,14 +217,15 @@ static void kvp_update_mem_state(int pool) kvp_file_info[pool].records = record; kvp_file_info[pool].num_records = records_read; + fclose(filep); kvp_release_lock(pool); } static int kvp_file_init(void) { - int ret, fd; + int fd; FILE *filep; size_t records_read; - __u8 *fname; + char *fname; struct kvp_record *record; struct kvp_record *readp; int num_blocks; @@ -208,7 +235,7 @@ static int kvp_file_init(void) if (access("/var/opt/hyperv", F_OK)) { if (mkdir("/var/opt/hyperv", S_IRUSR | S_IWUSR | S_IROTH)) { syslog(LOG_ERR, " Failed to create /var/opt/hyperv"); - exit(-1); + exit(EXIT_FAILURE); } } @@ -232,12 +259,18 @@ static int kvp_file_init(void) fclose(filep); return 1; } - while (!feof(filep)) { + for (;;) { readp = &record[records_read]; records_read += fread(readp, sizeof(struct kvp_record), ENTRIES_PER_BLOCK, filep); + if (ferror(filep)) { + syslog(LOG_ERR, "Failed to read file, pool: %d", + i); + exit(EXIT_FAILURE); + } + if (!feof(filep)) { /* * We have more data to read. @@ -311,7 +344,6 @@ static int kvp_key_add_or_modify(int pool, __u8 *key, int key_size, __u8 *value, int value_size) { int i; - int j, k; int num_records; struct kvp_record *record; int num_blocks; @@ -394,7 +426,7 @@ static int kvp_get_value(int pool, __u8 *key, int key_size, __u8 *value, return 1; } -static void kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, +static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, __u8 *value, int value_size) { struct kvp_record *record; @@ -406,16 +438,12 @@ static void kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, record = kvp_file_info[pool].records; if (index >= kvp_file_info[pool].num_records) { - /* - * This is an invalid index; terminate enumeration; - * - a NULL value will do the trick. - */ - strcpy(value, ""); - return; + return 1; } memcpy(key, record[index].key, key_size); memcpy(value, record[index].value, value_size); + return 0; } @@ -426,6 +454,7 @@ void kvp_get_os_info(void) uname(&uts_buf); os_build = uts_buf.release; + os_name = uts_buf.sysname; processor_arch = uts_buf.machine; /* @@ -437,20 +466,70 @@ void kvp_get_os_info(void) if (p) *p = '\0'; + /* + * Parse the /etc/os-release file if present: + * http://www.freedesktop.org/software/systemd/man/os-release.html + */ + file = fopen("/etc/os-release", "r"); + if (file != NULL) { + while (fgets(buf, sizeof(buf), file)) { + char *value, *q; + + /* Ignore comments */ + if (buf[0] == '#') + continue; + + /* Split into name=value */ + p = strchr(buf, '='); + if (!p) + continue; + *p++ = 0; + + /* Remove quotes and newline; un-escape */ + value = p; + q = p; + while (*p) { + if (*p == '\\') { + ++p; + if (!*p) + break; + *q++ = *p++; + } else if (*p == '\'' || *p == '"' || + *p == '\n') { + ++p; + } else { + *q++ = *p++; + } + } + *q = 0; + + if (!strcmp(buf, "NAME")) { + p = strdup(value); + if (!p) + break; + os_name = p; + } else if (!strcmp(buf, "VERSION_ID")) { + p = strdup(value); + if (!p) + break; + os_major = p; + } + } + fclose(file); + return; + } + + /* Fallback for older RH/SUSE releases */ 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: @@ -494,82 +573,458 @@ done: return; } + + +/* + * Retrieve an interface name corresponding to the specified guid. + * If there is a match, the function returns a pointer + * to the interface name and if not, a NULL is returned. + * If a match is found, the caller is responsible for + * freeing the memory. + */ + +static char *kvp_get_if_name(char *guid) +{ + DIR *dir; + struct dirent *entry; + FILE *file; + char *p, *q, *x; + char *if_name = NULL; + char buf[256]; + char *kvp_net_dir = "/sys/class/net/"; + char dev_id[256]; + + dir = opendir(kvp_net_dir); + if (dir == NULL) + return NULL; + + snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); + q = dev_id + strlen(kvp_net_dir); + + while ((entry = readdir(dir)) != NULL) { + /* + * Set the state for the next pass. + */ + *q = '\0'; + strcat(dev_id, entry->d_name); + strcat(dev_id, "/device/device_id"); + + file = fopen(dev_id, "r"); + if (file == NULL) + continue; + + p = fgets(buf, sizeof(buf), file); + if (p) { + x = strchr(p, '\n'); + if (x) + *x = '\0'; + + if (!strcmp(p, guid)) { + /* + * Found the guid match; return the interface + * name. The caller will free the memory. + */ + if_name = strdup(entry->d_name); + fclose(file); + break; + } + } + fclose(file); + } + + closedir(dir); + return if_name; +} + +/* + * Retrieve the MAC address given the interface name. + */ + +static char *kvp_if_name_to_mac(char *if_name) +{ + FILE *file; + char *p, *x; + char buf[256]; + char addr_file[256]; + int i; + char *mac_addr = NULL; + + snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", + if_name, "/address"); + + file = fopen(addr_file, "r"); + if (file == NULL) + return NULL; + + p = fgets(buf, sizeof(buf), file); + if (p) { + x = strchr(p, '\n'); + if (x) + *x = '\0'; + for (i = 0; i < strlen(p); i++) + p[i] = toupper(p[i]); + mac_addr = strdup(p); + } + + fclose(file); + return mac_addr; +} + + +/* + * Retrieve the interface name given tha MAC address. + */ + +static char *kvp_mac_to_if_name(char *mac) +{ + DIR *dir; + struct dirent *entry; + FILE *file; + char *p, *q, *x; + char *if_name = NULL; + char buf[256]; + char *kvp_net_dir = "/sys/class/net/"; + char dev_id[256]; + int i; + + dir = opendir(kvp_net_dir); + if (dir == NULL) + return NULL; + + snprintf(dev_id, sizeof(dev_id), kvp_net_dir); + q = dev_id + strlen(kvp_net_dir); + + while ((entry = readdir(dir)) != NULL) { + /* + * Set the state for the next pass. + */ + *q = '\0'; + + strcat(dev_id, entry->d_name); + strcat(dev_id, "/address"); + + file = fopen(dev_id, "r"); + if (file == NULL) + continue; + + p = fgets(buf, sizeof(buf), file); + if (p) { + x = strchr(p, '\n'); + if (x) + *x = '\0'; + + for (i = 0; i < strlen(p); i++) + p[i] = toupper(p[i]); + + if (!strcmp(p, mac)) { + /* + * Found the MAC match; return the interface + * name. The caller will free the memory. + */ + if_name = strdup(entry->d_name); + fclose(file); + break; + } + } + fclose(file); + } + + closedir(dir); + return if_name; +} + + +static void kvp_process_ipconfig_file(char *cmd, + char *config_buf, int len, + int element_size, int offset) +{ + char buf[256]; + char *p; + char *x; + FILE *file; + + /* + * First execute the command. + */ + file = popen(cmd, "r"); + if (file == NULL) + return; + + if (offset == 0) + memset(config_buf, 0, len); + while ((p = fgets(buf, sizeof(buf), file)) != NULL) { + if ((len - strlen(config_buf)) < (element_size + 1)) + break; + + x = strchr(p, '\n'); + *x = '\0'; + strcat(config_buf, p); + strcat(config_buf, ";"); + } + pclose(file); +} + +static void kvp_get_ipconfig_info(char *if_name, + struct hv_kvp_ipaddr_value *buffer) +{ + char cmd[512]; + char dhcp_info[128]; + char *p; + FILE *file; + + /* + * Get the address of default gateway (ipv4). + */ + sprintf(cmd, "%s %s", "ip route show dev", if_name); + strcat(cmd, " | awk '/default/ {print $3 }'"); + + /* + * Execute the command to gather gateway info. + */ + kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, + (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); + + /* + * Get the address of default gateway (ipv6). + */ + sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); + strcat(cmd, " | awk '/default/ {print $3 }'"); + + /* + * Execute the command to gather gateway info (ipv6). + */ + kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, + (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); + + + /* + * Gather the DNS state. + * Since there is no standard way to get this information + * across various distributions of interest; we just invoke + * an external script that needs to be ported across distros + * of interest. + * + * Following is the expected format of the information from the script: + * + * ipaddr1 (nameserver1) + * ipaddr2 (nameserver2) + * . + * . + */ + + sprintf(cmd, "%s", "hv_get_dns_info"); + + /* + * Execute the command to gather DNS info. + */ + kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, + (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); + + /* + * Gather the DHCP state. + * We will gather this state by invoking an external script. + * The parameter to the script is the interface name. + * Here is the expected output: + * + * Enabled: DHCP enabled. + */ + + sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); + + file = popen(cmd, "r"); + if (file == NULL) + return; + + p = fgets(dhcp_info, sizeof(dhcp_info), file); + if (p == NULL) { + pclose(file); + return; + } + + if (!strncmp(p, "Enabled", 7)) + buffer->dhcp_enabled = 1; + else + buffer->dhcp_enabled = 0; + + pclose(file); +} + + +static unsigned int hweight32(unsigned int *w) +{ + unsigned int res = *w - ((*w >> 1) & 0x55555555); + res = (res & 0x33333333) + ((res >> 2) & 0x33333333); + res = (res + (res >> 4)) & 0x0F0F0F0F; + res = res + (res >> 8); + return (res + (res >> 16)) & 0x000000FF; +} + +static int kvp_process_ip_address(void *addrp, + int family, char *buffer, + int length, int *offset) +{ + struct sockaddr_in *addr; + struct sockaddr_in6 *addr6; + int addr_length; + char tmp[50]; + const char *str; + + if (family == AF_INET) { + addr = (struct sockaddr_in *)addrp; + str = inet_ntop(family, &addr->sin_addr, tmp, 50); + addr_length = INET_ADDRSTRLEN; + } else { + addr6 = (struct sockaddr_in6 *)addrp; + str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); + addr_length = INET6_ADDRSTRLEN; + } + + if ((length - *offset) < addr_length + 1) + return HV_E_FAIL; + if (str == NULL) { + strcpy(buffer, "inet_ntop failed\n"); + return HV_E_FAIL; + } + if (*offset == 0) + strcpy(buffer, tmp); + else + strcat(buffer, tmp); + strcat(buffer, ";"); + + *offset += strlen(str) + 1; + return 0; +} + static int -kvp_get_ip_address(int family, char *buffer, int length) +kvp_get_ip_info(int family, char *if_name, int op, + void *out_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 sn_offset = 0; int error = 0; - + char *buffer; + struct hv_kvp_ipaddr_value *ip_buffer; + char cidr_mask[5]; /* /xyz */ + int weight; + int i; + unsigned int *w; + char *sn_str; + struct sockaddr_in6 *addr6; + + if (op == KVP_OP_ENUMERATE) { + buffer = out_buffer; + } else { + ip_buffer = out_buffer; + buffer = (char *)ip_buffer->ip_addr; + ip_buffer->addr_family = 0; + } /* * On entry into this function, the buffer is capable of holding the - * maximum key value (2048 bytes). + * maximum key value. */ if (getifaddrs(&ifap)) { strcpy(buffer, "getifaddrs failed\n"); - return 1; + return HV_E_FAIL; } 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, ";"); + if (curp->ifa_addr == NULL) { + curp = curp->ifa_next; + continue; + } - offset += strlen(str) + 1; - if ((length - offset) < (ipv4_len + 1)) - goto getaddr_done; + if ((if_name != NULL) && + (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { + /* + * We want info about a specific interface; + * just continue. + */ + curp = curp->ifa_next; + continue; + } - } else { + /* + * We only support two address families: AF_INET and AF_INET6. + * If a family value of 0 is specified, we collect both + * supported address families; if not we gather info on + * the specified address family. + */ + if ((family != 0) && (curp->ifa_addr->sa_family != family)) { + curp = curp->ifa_next; + continue; + } + if ((curp->ifa_addr->sa_family != AF_INET) && + (curp->ifa_addr->sa_family != AF_INET6)) { + curp = curp->ifa_next; + continue; + } + if (op == KVP_OP_GET_IP_INFO) { /* - * We only support AF_INET and AF_INET6 - * and the list of addresses is separated by a ";". + * Gather info other than the IP address. + * IP address info will be gathered later. */ - 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; + if (curp->ifa_addr->sa_family == AF_INET) { + ip_buffer->addr_family |= ADDR_FAMILY_IPV4; + /* + * Get subnet info. + */ + error = kvp_process_ip_address( + curp->ifa_netmask, + AF_INET, + (char *) + ip_buffer->sub_net, + length, + &sn_offset); + if (error) + goto gather_ipaddr; + } else { + ip_buffer->addr_family |= ADDR_FAMILY_IPV6; + /* + * Get subnet info in CIDR format. + */ + weight = 0; + sn_str = (char *)ip_buffer->sub_net; + addr6 = (struct sockaddr_in6 *) + curp->ifa_netmask; + w = addr6->sin6_addr.s6_addr32; + + for (i = 0; i < 4; i++) + weight += hweight32(&w[i]); + + sprintf(cidr_mask, "/%d", weight); + if ((length - sn_offset) < + (strlen(cidr_mask) + 1)) + goto gather_ipaddr; + + if (sn_offset == 0) + strcpy(sn_str, cidr_mask); + else + strcat(sn_str, cidr_mask); + strcat((char *)ip_buffer->sub_net, ";"); + sn_offset += strlen(sn_str) + 1; } + /* + * Collect other ip related configuration info. + */ + + kvp_get_ipconfig_info(if_name, ip_buffer); } + +gather_ipaddr: + error = kvp_process_ip_address(curp->ifa_addr, + curp->ifa_addr->sa_family, + buffer, + length, &offset); + if (error) + goto getaddr_done; + curp = curp->ifa_next; } @@ -579,6 +1034,315 @@ getaddr_done: } +static int expand_ipv6(char *addr, int type) +{ + int ret; + struct in6_addr v6_addr; + + ret = inet_pton(AF_INET6, addr, &v6_addr); + + if (ret != 1) { + if (type == NETMASK) + return 1; + return 0; + } + + sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" + "%02x%02x:%02x%02x:%02x%02x", + (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], + (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], + (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], + (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], + (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], + (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], + (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], + (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); + + return 1; + +} + +static int is_ipv4(char *addr) +{ + int ret; + struct in_addr ipv4_addr; + + ret = inet_pton(AF_INET, addr, &ipv4_addr); + + if (ret == 1) + return 1; + return 0; +} + +static int parse_ip_val_buffer(char *in_buf, int *offset, + char *out_buf, int out_len) +{ + char *x; + char *start; + + /* + * in_buf has sequence of characters that are seperated by + * the character ';'. The last sequence does not have the + * terminating ";" character. + */ + start = in_buf + *offset; + + x = strchr(start, ';'); + if (x) + *x = 0; + else + x = start + strlen(start); + + if (strlen(start) != 0) { + int i = 0; + /* + * Get rid of leading spaces. + */ + while (start[i] == ' ') + i++; + + if ((x - start) <= out_len) { + strcpy(out_buf, (start + i)); + *offset += (x - start) + 1; + return 1; + } + } + return 0; +} + +static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) +{ + int ret; + + ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); + + if (ret < 0) + return HV_E_FAIL; + + return 0; +} + + +static int process_ip_string(FILE *f, char *ip_string, int type) +{ + int error = 0; + char addr[INET6_ADDRSTRLEN]; + int i = 0; + int j = 0; + char str[256]; + char sub_str[10]; + int offset = 0; + + memset(addr, 0, sizeof(addr)); + + while (parse_ip_val_buffer(ip_string, &offset, addr, + (MAX_IP_ADDR_SIZE * 2))) { + + sub_str[0] = 0; + if (is_ipv4(addr)) { + switch (type) { + case IPADDR: + snprintf(str, sizeof(str), "%s", "IPADDR"); + break; + case NETMASK: + snprintf(str, sizeof(str), "%s", "NETMASK"); + break; + case GATEWAY: + snprintf(str, sizeof(str), "%s", "GATEWAY"); + break; + case DNS: + snprintf(str, sizeof(str), "%s", "DNS"); + break; + } + if (i != 0) { + if (type != DNS) { + snprintf(sub_str, sizeof(sub_str), + "_%d", i++); + } else { + snprintf(sub_str, sizeof(sub_str), + "%d", ++i); + } + } else if (type == DNS) { + snprintf(sub_str, sizeof(sub_str), "%d", ++i); + } + + + } else if (expand_ipv6(addr, type)) { + switch (type) { + case IPADDR: + snprintf(str, sizeof(str), "%s", "IPV6ADDR"); + break; + case NETMASK: + snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); + break; + case GATEWAY: + snprintf(str, sizeof(str), "%s", + "IPV6_DEFAULTGW"); + break; + case DNS: + snprintf(str, sizeof(str), "%s", "DNS"); + break; + } + if ((j != 0) || (type == DNS)) { + if (type != DNS) { + snprintf(sub_str, sizeof(sub_str), + "_%d", j++); + } else { + snprintf(sub_str, sizeof(sub_str), + "%d", ++i); + } + } else if (type == DNS) { + snprintf(sub_str, sizeof(sub_str), + "%d", ++i); + } + } else { + return HV_INVALIDARG; + } + + error = kvp_write_file(f, str, sub_str, addr); + if (error) + return error; + memset(addr, 0, sizeof(addr)); + } + + return 0; +} + +static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) +{ + int error = 0; + char if_file[128]; + FILE *file; + char cmd[512]; + char *mac_addr; + + /* + * Set the configuration for the specified interface with + * the information provided. Since there is no standard + * way to configure an interface, we will have an external + * script that does the job of configuring the interface and + * flushing the configuration. + * + * The parameters passed to this external script are: + * 1. A configuration file that has the specified configuration. + * + * We will embed the name of the interface in the configuration + * file: ifcfg-ethx (where ethx is the interface name). + * + * The information provided here may be more than what is needed + * in a given distro to configure the interface and so are free + * ignore information that may not be relevant. + * + * Here is the format of the ip configuration file: + * + * HWADDR=macaddr + * IF_NAME=interface name + * DHCP=yes (This is optional; if yes, DHCP is configured) + * + * IPADDR=ipaddr1 + * IPADDR_1=ipaddr2 + * IPADDR_x=ipaddry (where y = x + 1) + * + * NETMASK=netmask1 + * NETMASK_x=netmasky (where y = x + 1) + * + * GATEWAY=ipaddr1 + * GATEWAY_x=ipaddry (where y = x + 1) + * + * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) + * + * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be + * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as + * IPV6NETMASK. + * + * The host can specify multiple ipv4 and ipv6 addresses to be + * configured for the interface. Furthermore, the configuration + * needs to be persistent. A subsequent GET call on the interface + * is expected to return the configuration that is set via the SET + * call. + */ + + snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, + "hyperv/ifcfg-", if_name); + + file = fopen(if_file, "w"); + + if (file == NULL) { + syslog(LOG_ERR, "Failed to open config file"); + return HV_E_FAIL; + } + + /* + * First write out the MAC address. + */ + + mac_addr = kvp_if_name_to_mac(if_name); + if (mac_addr == NULL) { + error = HV_E_FAIL; + goto setval_error; + } + + error = kvp_write_file(file, "HWADDR", "", mac_addr); + if (error) + goto setval_error; + + error = kvp_write_file(file, "IF_NAME", "", if_name); + if (error) + goto setval_error; + + if (new_val->dhcp_enabled) { + error = kvp_write_file(file, "DHCP", "", "yes"); + if (error) + goto setval_error; + + /* + * We are done!. + */ + goto setval_done; + } + + /* + * Write the configuration for ipaddress, netmask, gateway and + * name servers. + */ + + error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); + if (error) + goto setval_error; + + error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); + if (error) + goto setval_error; + + error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); + if (error) + goto setval_error; + + error = process_ip_string(file, (char *)new_val->dns_addr, DNS); + if (error) + goto setval_error; + +setval_done: + free(mac_addr); + fclose(file); + + /* + * Now that we have populated the configuration file, + * invoke the external script to do its magic. + */ + + snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file); + system(cmd); + return 0; + +setval_error: + syslog(LOG_ERR, "Failed to write config file"); + free(mac_addr); + fclose(file); + return error; +} + + static int kvp_get_domain_name(char *buffer, int length) { @@ -646,6 +1410,10 @@ int main(void) char *p; char *key_value; char *key_name; + int op; + int pool; + char *if_name; + struct hv_kvp_ipaddr_value *kvp_ip_val; daemon(1, 0); openlog("KVP", 0, LOG_USER); @@ -657,13 +1425,13 @@ int main(void) if (kvp_file_init()) { syslog(LOG_ERR, "Failed to initialize the pools"); - exit(-1); + exit(EXIT_FAILURE); } fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); if (fd < 0) { syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd); - exit(-1); + exit(EXIT_FAILURE); } addr.nl_family = AF_NETLINK; addr.nl_pad = 0; @@ -675,7 +1443,7 @@ int main(void) if (error < 0) { syslog(LOG_ERR, "bind failed; error:%d", error); close(fd); - exit(-1); + exit(EXIT_FAILURE); } sock_opt = addr.nl_groups; setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt)); @@ -687,7 +1455,7 @@ int main(void) message->id.val = CN_KVP_VAL; hv_msg = (struct hv_kvp_msg *)message->data; - hv_msg->kvp_hdr.operation = KVP_OP_REGISTER; + hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; message->ack = 0; message->len = sizeof(struct hv_kvp_msg); @@ -695,7 +1463,7 @@ int main(void) if (len < 0) { syslog(LOG_ERR, "netlink_send failed; error:%d", len); close(fd); - exit(-1); + exit(EXIT_FAILURE); } pfd.fd = fd; @@ -721,12 +1489,21 @@ int main(void) 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: + /* + * We will use the KVP header information to pass back + * the error from this daemon. So, first copy the state + * and set the error code to success. + */ + op = hv_msg->kvp_hdr.operation; + pool = hv_msg->kvp_hdr.pool; + hv_msg->error = HV_S_OK; + + if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { /* * Driver is registering with us; stash away the version * information. */ + in_hand_shake = 0; p = (char *)hv_msg->body.kvp_register.version; lic_version = malloc(strlen(p) + 1); if (lic_version) { @@ -737,44 +1514,82 @@ int main(void) 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. - */ + switch (op) { + case KVP_OP_GET_IP_INFO: + kvp_ip_val = &hv_msg->body.kvp_ip_val; + if_name = + kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); + + if (if_name == NULL) { + /* + * We could not map the mac address to an + * interface name; return error. + */ + hv_msg->error = HV_E_FAIL; + break; + } + error = kvp_get_ip_info( + 0, if_name, KVP_OP_GET_IP_INFO, + kvp_ip_val, + (MAX_IP_ADDR_SIZE * 2)); + + if (error) + hv_msg->error = error; + + free(if_name); + break; + + case KVP_OP_SET_IP_INFO: + kvp_ip_val = &hv_msg->body.kvp_ip_val; + if_name = kvp_get_if_name( + (char *)kvp_ip_val->adapter_id); + if (if_name == NULL) { + /* + * We could not map the guid to an + * interface name; return error. + */ + hv_msg->error = HV_GUID_NOTFOUND; + break; + } + error = kvp_set_ip_info(if_name, kvp_ip_val); + if (error) + hv_msg->error = error; + + free(if_name); + break; case KVP_OP_SET: - if (kvp_key_add_or_modify(hv_msg->kvp_hdr.pool, + if (kvp_key_add_or_modify(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, ""); + hv_msg->error = HV_S_CONT; break; case KVP_OP_GET: - if (kvp_get_value(hv_msg->kvp_hdr.pool, + if (kvp_get_value(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, ""); + hv_msg->error = HV_S_CONT; break; case KVP_OP_DELETE: - if (kvp_key_delete(hv_msg->kvp_hdr.pool, + if (kvp_key_delete(pool, hv_msg->body.kvp_delete.key, hv_msg->body.kvp_delete.key_size)) - strcpy(hv_msg->body.kvp_delete.key, ""); + hv_msg->error = HV_S_CONT; break; default: break; } - if (hv_msg->kvp_hdr.operation != KVP_OP_ENUMERATE) + if (op != KVP_OP_ENUMERATE) goto kvp_done; /* @@ -782,13 +1597,14 @@ int main(void) * 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, + if (pool != KVP_POOL_AUTO) { + if (kvp_pool_enumerate(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); + HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) + hv_msg->error = HV_S_CONT; goto kvp_done; } @@ -807,13 +1623,13 @@ int main(void) strcpy(key_value, lic_version); break; case NetworkAddressIPv4: - kvp_get_ip_address(AF_INET, key_value, - HV_KVP_EXCHANGE_MAX_VALUE_SIZE); + kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, + 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); + kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, + key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); strcpy(key_name, "NetworkAddressIPv6"); break; case OSBuildNumber: @@ -841,11 +1657,7 @@ int main(void) strcpy(key_name, "ProcessorArchitecture"); break; default: - strcpy(key_value, "Unknown Key"); - /* - * We use a null key name to terminate enumeration. - */ - strcpy(key_name, ""); + hv_msg->error = HV_S_CONT; break; } /* @@ -863,7 +1675,7 @@ kvp_done: len = netlink_send(fd, incoming_cn_msg); if (len < 0) { syslog(LOG_ERR, "net_link send failed; error:%d", len); - exit(-1); + exit(EXIT_FAILURE); } } diff --git a/tools/hv/hv_set_ifconfig.sh b/tools/hv/hv_set_ifconfig.sh new file mode 100755 index 000000000000..3e9427e08d80 --- /dev/null +++ b/tools/hv/hv_set_ifconfig.sh @@ -0,0 +1,68 @@ +#!/bin/bash + +# This example script activates an interface based on the specified +# configuration. +# +# In the interest of keeping the KVP daemon code free of distro specific +# information; the kvp daemon code invokes this external script to configure +# the interface. +# +# The only argument to this script is the configuration file that is to +# be used to configure the interface. +# +# Each Distro is expected to implement this script in a distro specific +# fashion. For instance on Distros that ship with Network Manager enabled, +# this script can be based on the Network Manager APIs for configuring the +# interface. +# +# This example script is based on a RHEL environment. +# +# Here is the format of the ip configuration file: +# +# HWADDR=macaddr +# IF_NAME=interface name +# DHCP=yes (This is optional; if yes, DHCP is configured) +# +# IPADDR=ipaddr1 +# IPADDR_1=ipaddr2 +# IPADDR_x=ipaddry (where y = x + 1) +# +# NETMASK=netmask1 +# NETMASK_x=netmasky (where y = x + 1) +# +# GATEWAY=ipaddr1 +# GATEWAY_x=ipaddry (where y = x + 1) +# +# DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) +# +# IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be +# tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as +# IPV6NETMASK. +# +# The host can specify multiple ipv4 and ipv6 addresses to be +# configured for the interface. Furthermore, the configuration +# needs to be persistent. A subsequent GET call on the interface +# is expected to return the configuration that is set via the SET +# call. +# + + + +echo "IPV6INIT=yes" >> $1 +echo "NM_CONTROLLED=no" >> $1 +echo "PEERDNS=yes" >> $1 +echo "ONBOOT=yes" >> $1 + +dhcp=$(grep "DHCP" $1 2>/dev/null) +if [ "$dhcp" != "" ]; +then +echo "BOOTPROTO=dhcp" >> $1; +fi + +cp $1 /etc/sysconfig/network-scripts/ + + +interface=$(echo $1 | awk -F - '{ print $2 }') + +/sbin/ifdown $interface 2>/dev/null +/sbin/ifup $interfac 2>/dev/null |