Implement the KVP_OP_SET_IP_INFO verb. This operation sets the IP information on the specified interface.
Signed-off-by: K. Y. Srinivasan <[email protected]> Reviewed-by: Haiyang Zhang <[email protected]> --- tools/hv/hv_kvp_daemon.c | 198 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 198 insertions(+), 0 deletions(-) diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 569f4d7..8eefdb5 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -847,6 +847,183 @@ getaddr_done: return error; } +int parse_ip_val_buffer(char *in_buf, int *offset, char *out_buf, int out_len) +{ + int end; + char *x; + char *start; + + /* + * in_buf has sequence of characters that are seperated by + * the character ';'. The last sequence is terminated by ';'. + */ + start = in_buf + *offset; + + x = strchr(start, ';'); + if (x) { + *x = 0; + if ((x - start) <= out_len) { + strcpy(out_buf, start); + strcat(out_buf, "\n"); + *offset = (x - start) + 1; + return 1; + } + } + return 0; +} + +static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) +{ + int error = 0; + char if_path[256]; + char if_tmp_path[256]; + FILE *file; + char addr[INET6_ADDRSTRLEN]; + int i; + char cmd[256]; + char str[256]; + int offset; + + /* + * Set the specified info in the appropriate config file + * for the specified interface and flush the settings. + * Currently we support distributions that maintain + * network configuration information in file: + * /etc/sysconfig/network-scripts/icfg-ifname + */ + memset(if_path, 0, sizeof(if_path)); + strcat(if_path, "/etc/sysconfig/network-scripts/ifcfg-"); + strcat(if_path, if_name); + + memset(if_tmp_path, 0, sizeof(if_tmp_path)); + strcat(if_tmp_path, "/var/opt/hyperv/.kvp_ifcfg-"); + strcat(if_tmp_path, if_name); + + file = fopen(if_path, "r"); + if (file == NULL) { + /* + * This system maintains the interface configuration + * information in a different location. Need to add + * code to deal with that. For now fail the operation. + */ + return 1; + } + + fclose(file); + /* + * The host gives us complete configuration information for the + * interface; just overwrite the current info. + * To deal with intermediate failues, first write a temp file. + */ + + file = fopen(if_tmp_path, "w"); + + if (file == NULL) + return 1; + + if (new_val->dhcp_enabled) { + error = fputs("BOOTPROTO=dhcp\n", file); + if (error == EOF) + goto setval_error; + + /* + * We are done!. + */ + goto setval_done; + } + + /* + * Write the configuration for ipaddress, netmask, gateway and + * name servers. + */ + i = 0; + offset = 0; + memset(addr, 0, sizeof(addr)); + memset(str, 0, sizeof(str)); + + while (parse_ip_val_buffer((char *)new_val->ip_addr, &offset, addr, + (MAX_IP_ADDR_SIZE * 2))) { + sprintf(str, "IPADDR_%d=", i++); + strcat(str, addr); + error = fputs(str, file); + if (error == EOF) + goto setval_error; + } + + i = 0; + offset = 0; + memset(addr, 0, sizeof(addr)); + memset(str, 0, sizeof(str)); + + while (parse_ip_val_buffer((char *)new_val->sub_net, &offset, addr, + (MAX_IP_ADDR_SIZE * 2))) { + sprintf(str, "NETMAK_%d=", i++); + strcat(str, addr); + error = fputs(str, file); + if (error == EOF) + goto setval_error; + } + + i = 0; + offset = 0; + memset(addr, 0, sizeof(addr)); + memset(str, 0, sizeof(str)); + + while (parse_ip_val_buffer((char *)new_val->gate_way, &offset, addr, + (MAX_IP_ADDR_SIZE * 2))) { + sprintf(str, "GATEWAY_%d=", i++); + strcat(str, addr); + error = fputs(str, file); + if (error == EOF) + goto setval_error; + } + + i = 0; + offset = 0; + memset(addr, 0, sizeof(addr)); + memset(str, 0, sizeof(str)); + + while (parse_ip_val_buffer((char *)new_val->dns_addr, &offset, addr, + (MAX_IP_ADDR_SIZE * 2))) { + sprintf(str, "DNS%d=", i++); + strcat(str, addr); + error = fputs(str, file); + if (error == EOF) + goto setval_error; + } + + error = fputs("ONBOOT=yes\n", file); + if (error == EOF) + goto setval_error; + + error = fputs("PEERDNS=yes\n", file); + if (error == EOF) + goto setval_error; + +setval_done: + /* + * Now move the config file to the final location. + */ + fclose(file); + memset(cmd, 0, sizeof(cmd)); + strcat(cmd, "mv "); + strcat(cmd, if_tmp_path); + strcat(cmd, " "); + strcat(cmd, if_path); + system(cmd); + + /* + * Now restart the network to flush the parameters. + */ + memset(cmd, 0, sizeof(cmd)); + strcat(cmd, "service network restart"); + system(cmd); + return 0; + +setval_error: + fclose(file); + return error; +} static int kvp_get_domain_name(char *buffer, int length) @@ -1048,6 +1225,27 @@ int main(void) 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, + MAX_ADAPTER_ID_SIZE); + if (if_name == NULL) { + /* + * We could not map the guid to an + * interface name; return error. + */ + *((int *)(&hv_msg->kvp_hdr.operation)) = + HV_ERROR_DEVICE_NOT_CONNECTED; + break; + } + error = kvp_set_ip_info(if_name, kvp_ip_val); + if (error) + *((int *)(&hv_msg->kvp_hdr.operation)) = + HV_ERROR_DEVICE_NOT_CONNECTED; + + free(if_name); + break; case KVP_OP_SET: if (kvp_key_add_or_modify(hv_msg->kvp_hdr.pool, hv_msg->body.kvp_set.data.key, -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
