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dpavlin |
1 |
/* |
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* Cisco 7200 (Predator) simulation platform. |
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* Copyright (c) 2006 Christophe Fillot (cf@utc.fr) |
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* |
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* Hypervisor routines. |
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*/ |
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/* By default, Cygwin supports only 64 FDs with select()! */ |
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#ifdef __CYGWIN__ |
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#define FD_SETSIZE 1024 |
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#endif |
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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 <sys/types.h> |
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#include <sys/stat.h> |
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#include <sys/mman.h> |
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#include <signal.h> |
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#include <fcntl.h> |
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#include <errno.h> |
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#include <assert.h> |
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#include <stdarg.h> |
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#include <sys/ioctl.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <arpa/inet.h> |
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#include <pthread.h> |
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#include "utils.h" |
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#include "parser.h" |
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#include "net.h" |
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#include "registry.h" |
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#include "mips64.h" |
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#include "dynamips.h" |
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#include "dev_c7200.h" |
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#include "dev_c3600.h" |
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dpavlin |
4 |
#include "dev_c2691.h" |
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#include "dev_c3725.h" |
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#include "dev_c3745.h" |
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dpavlin |
1 |
#include "hypervisor.h" |
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#include "net_io.h" |
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#include "net_io_bridge.h" |
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#include "frame_relay.h" |
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#include "atm.h" |
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#define DEBUG_TOKEN 0 |
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/* Hypervisor modules */ |
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static hypervisor_module_t *module_list = NULL; |
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static volatile int hypervisor_running = 0; |
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/* Hypervisor connection list */ |
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static hypervisor_conn_t *hypervisor_conn_list = NULL; |
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/* Show hypervisor version */ |
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static int cmd_version(hypervisor_conn_t *conn,int argc,char *argv[]) |
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{ |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"%s",sw_version); |
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return(0); |
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} |
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dpavlin |
2 |
/* Parser test */ |
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static int cmd_parser_test(hypervisor_conn_t *conn,int argc,char *argv[]) |
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{ |
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int i; |
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for(i=0;i<argc;i++) |
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hypervisor_send_reply(conn,HSC_INFO_MSG,0, |
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"arg %d (len %u): \"%s\"", |
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i,strlen(argv[i]),argv[i]); |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
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return(0); |
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} |
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dpavlin |
1 |
/* Show hypervisor module list */ |
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static int cmd_mod_list(hypervisor_conn_t *conn,int argc,char *argv[]) |
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{ |
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hypervisor_module_t *m; |
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for(m=module_list;m;m=m->next) |
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hypervisor_send_reply(conn,HSC_INFO_MSG,0,"%s",m->name); |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
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return(0); |
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} |
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/* Show module command list */ |
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static int cmd_modcmd_list(hypervisor_conn_t *conn,int argc,char *argv[]) |
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{ |
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hypervisor_module_t *m; |
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hypervisor_cmd_t *cmd; |
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if (!(m = hypervisor_find_module(argv[0]))) { |
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hypervisor_send_reply(conn,HSC_ERR_UNK_MODULE,1,"unknown module '%s'", |
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argv[0]); |
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return(-1); |
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} |
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for(cmd=m->cmd_list;cmd;cmd=cmd->next) |
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hypervisor_send_reply(conn,HSC_INFO_MSG,0,"%s (min/max args: %d/%d)", |
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cmd->name,cmd->min_param,cmd->max_param); |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
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return(0); |
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} |
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110 |
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/* Set working directory */ |
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static int cmd_set_working_dir(hypervisor_conn_t *conn,int argc,char *argv[]) |
112 |
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{ |
113 |
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if (chdir(argv[0]) == -1) { |
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hypervisor_send_reply(conn,HSC_ERR_INV_PARAM,1, |
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"chdir: %s",strerror(errno)); |
116 |
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} else { |
117 |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
118 |
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} |
119 |
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return(0); |
120 |
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} |
121 |
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122 |
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/* Save the hypervisor configuration in the specified file */ |
123 |
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static int cmd_save_config(hypervisor_conn_t *conn,int argc,char *argv[]) |
124 |
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{ |
125 |
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FILE *fd; |
126 |
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127 |
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if (!(fd = fopen(argv[0],"w"))) { |
128 |
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hypervisor_send_reply(conn,HSC_ERR_FILE,1,"fopen: %s",strerror(errno)); |
129 |
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return(-1); |
130 |
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} |
131 |
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132 |
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/* Save configuration for all objects */ |
133 |
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netio_save_config_all(fd); |
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frsw_save_config_all(fd); |
135 |
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atmsw_save_config_all(fd); |
136 |
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netio_bridge_save_config_all(fd); |
137 |
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c7200_save_config_all(fd); |
138 |
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c3600_save_config_all(fd); |
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dpavlin |
4 |
c2691_save_config_all(fd); |
140 |
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c3725_save_config_all(fd); |
141 |
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c3745_save_config_all(fd); |
142 |
dpavlin |
1 |
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143 |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
144 |
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return(0); |
145 |
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} |
146 |
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147 |
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/* Reset hypervisor (delete all objects) */ |
148 |
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static int cmd_reset(hypervisor_conn_t *conn,int argc,char *argv[]) |
149 |
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{ |
150 |
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dynamips_reset(); |
151 |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
152 |
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return(0); |
153 |
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} |
154 |
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155 |
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/* Close connection */ |
156 |
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static int cmd_close(hypervisor_conn_t *conn,int argc,char *argv[]) |
157 |
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{ |
158 |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
159 |
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conn->active = FALSE; |
160 |
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return(0); |
161 |
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} |
162 |
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163 |
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/* Stop hypervisor */ |
164 |
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static int cmd_stop(hypervisor_conn_t *conn,int argc,char *argv[]) |
165 |
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{ |
166 |
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hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK"); |
167 |
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hypervisor_running = FALSE; |
168 |
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return(0); |
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} |
170 |
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171 |
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/* Hypervisor commands */ |
172 |
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static hypervisor_cmd_t hypervisor_cmd_array[] = { |
173 |
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{ "version", 0, 0, cmd_version, NULL }, |
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dpavlin |
2 |
{ "parser_test", 0, 10, cmd_parser_test, NULL }, |
175 |
dpavlin |
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{ "module_list", 0, 0, cmd_mod_list, NULL }, |
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{ "cmd_list", 1, 1, cmd_modcmd_list, NULL }, |
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{ "working_dir", 1, 1, cmd_set_working_dir, NULL }, |
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{ "save_config", 1, 1, cmd_save_config, NULL }, |
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{ "reset", 0, 0, cmd_reset, NULL }, |
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{ "close", 0, 0, cmd_close, NULL }, |
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{ "stop", 0, 0, cmd_stop, NULL }, |
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{ NULL, -1, -1, NULL, NULL }, |
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}; |
184 |
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185 |
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/* Send a reply */ |
186 |
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int hypervisor_send_reply(hypervisor_conn_t *conn,int code,int done, |
187 |
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char *format,...) |
188 |
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{ |
189 |
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va_list ap; |
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size_t n = 0; |
191 |
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192 |
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if (conn != NULL) { |
193 |
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va_start(ap,format); |
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n += fprintf(conn->out,"%3d%s",code,(done)?"-":" "); |
195 |
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n += vfprintf(conn->out,format,ap); |
196 |
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n += fprintf(conn->out,"\r\n"); |
197 |
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fflush(conn->out); |
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va_end(ap); |
199 |
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} |
200 |
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201 |
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return(n); |
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} |
203 |
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204 |
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/* Find a module */ |
205 |
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hypervisor_module_t *hypervisor_find_module(char *name) |
206 |
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{ |
207 |
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hypervisor_module_t *m; |
208 |
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209 |
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for(m=module_list;m;m=m->next) |
210 |
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if (!strcmp(m->name,name)) |
211 |
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return m; |
212 |
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213 |
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return NULL; |
214 |
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} |
215 |
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216 |
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/* Find a command in a module */ |
217 |
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hypervisor_cmd_t *hypervisor_find_cmd(hypervisor_module_t *module,char *name) |
218 |
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{ |
219 |
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hypervisor_cmd_t *cmd; |
220 |
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221 |
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for(cmd=module->cmd_list;cmd;cmd=cmd->next) |
222 |
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if (!strcmp(cmd->name,name)) |
223 |
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return cmd; |
224 |
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225 |
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return NULL; |
226 |
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} |
227 |
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228 |
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/* Find an object in the registry */ |
229 |
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void *hypervisor_find_object(hypervisor_conn_t *conn,char *name,int obj_type) |
230 |
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{ |
231 |
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void *p; |
232 |
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233 |
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if (!(p = registry_find(name,obj_type))) { |
234 |
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hypervisor_send_reply(conn,HSC_ERR_UNK_OBJ,1, |
235 |
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"unable to find object '%s'",name); |
236 |
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return NULL; |
237 |
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} |
238 |
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239 |
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return p; |
240 |
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} |
241 |
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242 |
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/* Find a VM in the registry */ |
243 |
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void *hypervisor_find_vm(hypervisor_conn_t *conn,char *name,int vm_type) |
244 |
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{ |
245 |
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vm_instance_t *vm; |
246 |
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247 |
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if (!(vm = vm_acquire(name))) { |
248 |
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hypervisor_send_reply(conn,HSC_ERR_UNK_OBJ,1, |
249 |
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"unable to find VM '%s'",name); |
250 |
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return NULL; |
251 |
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} |
252 |
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253 |
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if (vm->type != vm_type) { |
254 |
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vm_release(vm); |
255 |
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hypervisor_send_reply(conn,HSC_ERR_BAD_OBJ,1, |
256 |
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"VM '%s' is not a VM type %d", |
257 |
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name,vm_type); |
258 |
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return NULL; |
259 |
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} |
260 |
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261 |
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return vm; |
262 |
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} |
263 |
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264 |
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/* Register a module */ |
265 |
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hypervisor_module_t *hypervisor_register_module(char *name) |
266 |
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{ |
267 |
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hypervisor_module_t *m; |
268 |
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|
269 |
|
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if (hypervisor_find_module(name) != NULL) { |
270 |
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fprintf(stderr,"Hypervisor: module '%s' already exists.\n",name); |
271 |
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return NULL; |
272 |
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} |
273 |
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274 |
|
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if (!(m = malloc(sizeof(*m)))) { |
275 |
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fprintf(stderr,"Hypervisor: unable to register new module.\n"); |
276 |
|
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return NULL; |
277 |
|
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} |
278 |
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279 |
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m->name = name; |
280 |
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m->cmd_list = NULL; |
281 |
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282 |
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m->next = module_list; |
283 |
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module_list = m; |
284 |
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return m; |
285 |
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} |
286 |
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|
287 |
|
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/* Register a list of commands */ |
288 |
|
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int hypervisor_register_cmd_list(hypervisor_module_t *module, |
289 |
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hypervisor_cmd_t *cmd_list) |
290 |
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{ |
291 |
|
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hypervisor_cmd_t *cmd = cmd_list; |
292 |
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|
293 |
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while(cmd->next != NULL) |
294 |
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cmd = cmd->next; |
295 |
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296 |
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cmd->next = module->cmd_list; |
297 |
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module->cmd_list = cmd_list; |
298 |
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return(0); |
299 |
|
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} |
300 |
|
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|
301 |
|
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/* Register an array of commands */ |
302 |
|
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int hypervisor_register_cmd_array(hypervisor_module_t *module, |
303 |
|
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hypervisor_cmd_t *cmd_array) |
304 |
|
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{ |
305 |
|
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hypervisor_cmd_t *cmd; |
306 |
|
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|
307 |
|
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for(cmd=cmd_array;cmd->name!=NULL;cmd++) { |
308 |
|
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cmd->next = module->cmd_list; |
309 |
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module->cmd_list = cmd; |
310 |
|
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} |
311 |
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|
312 |
|
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return(0); |
313 |
|
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} |
314 |
|
|
|
315 |
|
|
/* Locate the module and execute command */ |
316 |
|
|
static int hypervisor_exec_cmd(hypervisor_conn_t *conn, |
317 |
|
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char *mod_name,char *cmd_name, |
318 |
|
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int argc,char *argv[]) |
319 |
|
|
{ |
320 |
|
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hypervisor_module_t *module; |
321 |
|
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hypervisor_cmd_t *cmd; |
322 |
|
|
|
323 |
|
|
if (!(module = hypervisor_find_module(mod_name))) { |
324 |
|
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hypervisor_send_reply(conn,HSC_ERR_UNK_MODULE,1,"Unknown module '%s'", |
325 |
|
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mod_name); |
326 |
|
|
return(-1); |
327 |
|
|
} |
328 |
|
|
|
329 |
|
|
if (!(cmd = hypervisor_find_cmd(module,cmd_name))) { |
330 |
|
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hypervisor_send_reply(conn,HSC_ERR_UNK_CMD,1,"Unknown command '%s'", |
331 |
|
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cmd_name); |
332 |
|
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return(-1); |
333 |
|
|
} |
334 |
|
|
|
335 |
|
|
if ((argc < cmd->min_param) || (argc > cmd->max_param)) { |
336 |
|
|
hypervisor_send_reply(conn,HSC_ERR_BAD_PARAM,1, |
337 |
|
|
"Bad number of parameters (%d with min/max=%d/%d)", |
338 |
|
|
argc,cmd->min_param,cmd->max_param); |
339 |
|
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return(-1); |
340 |
|
|
} |
341 |
|
|
|
342 |
|
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return(cmd->handler(conn,argc,argv)); |
343 |
|
|
} |
344 |
|
|
|
345 |
|
|
/* Thread for servicing connections */ |
346 |
|
|
static void *hypervisor_thread(void *arg) |
347 |
|
|
{ |
348 |
|
|
hypervisor_conn_t *conn = arg; |
349 |
dpavlin |
2 |
char buffer[512],**tokens; |
350 |
|
|
parser_context_t ctx; |
351 |
|
|
int res; |
352 |
dpavlin |
1 |
|
353 |
dpavlin |
2 |
tokens = NULL; |
354 |
|
|
parser_context_init(&ctx); |
355 |
|
|
|
356 |
dpavlin |
1 |
while(conn->active) { |
357 |
dpavlin |
2 |
if (!fgets(buffer,sizeof(buffer),conn->in)) |
358 |
dpavlin |
1 |
break; |
359 |
|
|
|
360 |
|
|
if (!*buffer) |
361 |
|
|
continue; |
362 |
|
|
|
363 |
|
|
/* Tokenize command line */ |
364 |
dpavlin |
2 |
res = parser_scan_buffer(&ctx,buffer,strlen(buffer)); |
365 |
dpavlin |
1 |
|
366 |
dpavlin |
2 |
if (res != 0) { |
367 |
|
|
tokens = NULL; |
368 |
dpavlin |
1 |
|
369 |
dpavlin |
2 |
if (ctx.error != 0) { |
370 |
|
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hypervisor_send_reply(conn,HSC_ERR_PARSING,1,"Parse error: %s", |
371 |
|
|
parser_strerror(&ctx)); |
372 |
|
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goto free_tokens; |
373 |
|
|
} |
374 |
dpavlin |
1 |
|
375 |
dpavlin |
2 |
if (ctx.tok_count < 2) { |
376 |
|
|
hypervisor_send_reply(conn,HSC_ERR_PARSING,1, |
377 |
|
|
"At least a module and a command " |
378 |
|
|
"must be specified"); |
379 |
|
|
goto free_tokens; |
380 |
|
|
} |
381 |
|
|
|
382 |
|
|
/* Map token list to an array */ |
383 |
|
|
tokens = parser_map_array(&ctx); |
384 |
dpavlin |
1 |
|
385 |
dpavlin |
2 |
if (!tokens) { |
386 |
|
|
hypervisor_send_reply(conn,HSC_ERR_PARSING,1,"No memory"); |
387 |
|
|
goto free_tokens; |
388 |
|
|
} |
389 |
dpavlin |
1 |
|
390 |
dpavlin |
2 |
/* Execute command */ |
391 |
|
|
//m_log("hypervisor_exec","%s\n",buffer); |
392 |
|
|
hypervisor_exec_cmd(conn,tokens[0],tokens[1],ctx. |
393 |
|
|
tok_count-2,&tokens[2]); |
394 |
dpavlin |
1 |
|
395 |
dpavlin |
2 |
free_tokens: |
396 |
|
|
free(tokens); |
397 |
|
|
tokens = NULL; |
398 |
|
|
parser_context_free(&ctx); |
399 |
|
|
} |
400 |
dpavlin |
1 |
} |
401 |
|
|
|
402 |
dpavlin |
2 |
free(tokens); |
403 |
|
|
parser_context_free(&ctx); |
404 |
dpavlin |
1 |
return NULL; |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
static void sigpipe_handler(int sig) |
408 |
|
|
{ |
409 |
|
|
printf("SIGPIPE received.\n"); |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
/* Initialize hypervisor */ |
413 |
|
|
int hypervisor_init(void) |
414 |
|
|
{ |
415 |
|
|
hypervisor_module_t *module; |
416 |
|
|
|
417 |
|
|
module = hypervisor_register_module("hypervisor"); |
418 |
|
|
assert(module != NULL); |
419 |
|
|
|
420 |
|
|
hypervisor_register_cmd_array(module,hypervisor_cmd_array); |
421 |
|
|
return(0); |
422 |
|
|
} |
423 |
|
|
|
424 |
|
|
/* Remove a connection from the list */ |
425 |
|
|
static void hypervisor_remove_conn(hypervisor_conn_t *conn) |
426 |
|
|
{ |
427 |
|
|
if (conn->pprev != NULL) { |
428 |
|
|
if (conn->next) |
429 |
|
|
conn->next->pprev = conn->pprev; |
430 |
|
|
|
431 |
|
|
*(conn->pprev) = conn->next; |
432 |
|
|
} |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
/* Close a connection */ |
436 |
|
|
static void hypervisor_close_conn(hypervisor_conn_t *conn) |
437 |
|
|
{ |
438 |
|
|
if (conn != NULL) { |
439 |
|
|
conn->active = FALSE; |
440 |
|
|
shutdown(conn->client_fd,2); |
441 |
|
|
pthread_join(conn->tid,NULL); |
442 |
|
|
|
443 |
|
|
fclose(conn->in); |
444 |
|
|
fclose(conn->out); |
445 |
|
|
|
446 |
|
|
shutdown(conn->client_fd,2); |
447 |
|
|
close(conn->client_fd); |
448 |
|
|
|
449 |
|
|
hypervisor_remove_conn(conn); |
450 |
|
|
free(conn); |
451 |
|
|
} |
452 |
|
|
} |
453 |
|
|
|
454 |
|
|
/* Close connections (dead or all) */ |
455 |
|
|
static void hypervisor_close_conn_list(int dead_status) |
456 |
|
|
{ |
457 |
|
|
hypervisor_conn_t *conn,*next; |
458 |
|
|
|
459 |
|
|
for(conn=hypervisor_conn_list;conn;conn=next) { |
460 |
|
|
next = conn->next; |
461 |
|
|
|
462 |
|
|
if (dead_status && conn->active) |
463 |
|
|
continue; |
464 |
|
|
|
465 |
|
|
hypervisor_close_conn(conn); |
466 |
|
|
} |
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
/* Add a new connection to the list */ |
470 |
|
|
static void hypervisor_add_conn(hypervisor_conn_t *conn) |
471 |
|
|
{ |
472 |
|
|
conn->next = hypervisor_conn_list; |
473 |
|
|
conn->pprev = &hypervisor_conn_list; |
474 |
|
|
|
475 |
|
|
if (hypervisor_conn_list != NULL) |
476 |
|
|
hypervisor_conn_list->pprev = &conn->next; |
477 |
|
|
|
478 |
|
|
hypervisor_conn_list = conn; |
479 |
|
|
} |
480 |
|
|
|
481 |
|
|
/* Create a new connection */ |
482 |
|
|
static hypervisor_conn_t *hypervisor_create_conn(int client_fd) |
483 |
|
|
{ |
484 |
|
|
hypervisor_conn_t *conn; |
485 |
|
|
|
486 |
|
|
if (!(conn = malloc(sizeof(*conn)))) |
487 |
|
|
goto err_malloc; |
488 |
|
|
|
489 |
|
|
memset(conn,0,sizeof(*conn)); |
490 |
|
|
conn->active = TRUE; |
491 |
|
|
conn->client_fd = client_fd; |
492 |
|
|
|
493 |
|
|
/* Open input buffered stream */ |
494 |
|
|
if (!(conn->in = fdopen(client_fd,"r"))) { |
495 |
|
|
perror("hypervisor_create_conn: fdopen/in"); |
496 |
|
|
goto err_fd_in; |
497 |
|
|
} |
498 |
|
|
|
499 |
|
|
/* Open output buffered stream */ |
500 |
|
|
if (!(conn->out = fdopen(client_fd,"w"))) { |
501 |
|
|
perror("hypervisor_create_conn: fdopen/out"); |
502 |
|
|
goto err_fd_out; |
503 |
|
|
} |
504 |
|
|
|
505 |
|
|
/* Set line buffering */ |
506 |
|
|
setlinebuf(conn->in); |
507 |
|
|
setlinebuf(conn->out); |
508 |
|
|
|
509 |
|
|
/* Create the managing thread */ |
510 |
|
|
if (pthread_create(&conn->tid,NULL,hypervisor_thread,conn) != 0) |
511 |
|
|
goto err_thread; |
512 |
|
|
|
513 |
|
|
/* Add it to the connection list */ |
514 |
|
|
hypervisor_add_conn(conn); |
515 |
|
|
return conn; |
516 |
|
|
|
517 |
|
|
err_thread: |
518 |
|
|
fclose(conn->out); |
519 |
|
|
err_fd_out: |
520 |
|
|
fclose(conn->in); |
521 |
|
|
err_fd_in: |
522 |
|
|
free(conn); |
523 |
|
|
err_malloc: |
524 |
|
|
return NULL; |
525 |
|
|
} |
526 |
|
|
|
527 |
|
|
/* Stop hypervisor from sighandler */ |
528 |
|
|
int hypervisor_stopsig(void) |
529 |
|
|
{ |
530 |
|
|
hypervisor_running = FALSE; |
531 |
|
|
return(0); |
532 |
|
|
} |
533 |
|
|
|
534 |
|
|
/* Hypervisor TCP server */ |
535 |
|
|
int hypervisor_tcp_server(int tcp_port) |
536 |
|
|
{ |
537 |
|
|
int fd_array[HYPERVISOR_MAX_FD]; |
538 |
|
|
struct sockaddr_storage remote_addr; |
539 |
|
|
socklen_t remote_len; |
540 |
|
|
int i,res,clnt,fd_count,fd_max; |
541 |
|
|
struct timeval tv; |
542 |
|
|
fd_set fds; |
543 |
|
|
|
544 |
|
|
/* Initialize all hypervisor modules */ |
545 |
|
|
hypervisor_init(); |
546 |
|
|
hypervisor_nio_init(); |
547 |
|
|
hypervisor_nio_bridge_init(); |
548 |
|
|
hypervisor_frsw_init(); |
549 |
|
|
hypervisor_atmsw_init(); |
550 |
|
|
hypervisor_ethsw_init(); |
551 |
|
|
hypervisor_vm_init(); |
552 |
dpavlin |
2 |
hypervisor_vm_debug_init(); |
553 |
dpavlin |
1 |
hypervisor_c7200_init(); |
554 |
|
|
hypervisor_c3600_init(); |
555 |
dpavlin |
4 |
hypervisor_c2691_init(); |
556 |
|
|
hypervisor_c3725_init(); |
557 |
|
|
hypervisor_c3745_init(); |
558 |
dpavlin |
1 |
|
559 |
|
|
signal(SIGPIPE,sigpipe_handler); |
560 |
|
|
|
561 |
|
|
if (!tcp_port) |
562 |
|
|
tcp_port = HYPERVISOR_TCP_PORT; |
563 |
|
|
|
564 |
|
|
fd_count = ip_listen(tcp_port,SOCK_STREAM,HYPERVISOR_MAX_FD,fd_array); |
565 |
|
|
|
566 |
|
|
if (fd_count <= 0) { |
567 |
|
|
fprintf(stderr,"Hypervisor: unable to create TCP sockets.\n"); |
568 |
|
|
return(-1); |
569 |
|
|
} |
570 |
|
|
|
571 |
|
|
/* Start accepting connections */ |
572 |
dpavlin |
4 |
printf("Hypervisor TCP control server started (port %d).\n",tcp_port); |
573 |
dpavlin |
1 |
hypervisor_running = TRUE; |
574 |
|
|
|
575 |
|
|
while(hypervisor_running) { |
576 |
|
|
FD_ZERO(&fds); |
577 |
|
|
fd_max = -1; |
578 |
|
|
|
579 |
|
|
for(i=0;i<fd_count;i++) |
580 |
|
|
if (fd_array[i] != -1) { |
581 |
|
|
FD_SET(fd_array[i],&fds); |
582 |
|
|
if (fd_array[i] > fd_max) |
583 |
|
|
fd_max = fd_array[i]; |
584 |
|
|
} |
585 |
|
|
|
586 |
|
|
/* Wait for incoming connections */ |
587 |
|
|
tv.tv_sec = 0; |
588 |
|
|
tv.tv_usec = 500 * 1000; /* 500 ms */ |
589 |
|
|
res = select(fd_max+1,&fds,NULL,NULL,&tv); |
590 |
|
|
|
591 |
|
|
if (res == -1) { |
592 |
|
|
if (errno == EINTR) |
593 |
|
|
continue; |
594 |
|
|
else |
595 |
|
|
perror("hypervisor_tcp_server: select"); |
596 |
|
|
} |
597 |
|
|
|
598 |
|
|
/* Accept connections on signaled sockets */ |
599 |
|
|
for(i=0;i<fd_count;i++) { |
600 |
|
|
if (fd_array[i] == -1) |
601 |
|
|
continue; |
602 |
|
|
|
603 |
|
|
if (!FD_ISSET(fd_array[i],&fds)) |
604 |
|
|
continue; |
605 |
|
|
|
606 |
|
|
remote_len = sizeof(remote_addr); |
607 |
|
|
clnt = accept(fd_array[i],(struct sockaddr *)&remote_addr, |
608 |
|
|
&remote_len); |
609 |
|
|
|
610 |
|
|
if (clnt < 0) { |
611 |
|
|
perror("hypervisor_tcp_server: accept"); |
612 |
|
|
continue; |
613 |
|
|
} |
614 |
|
|
|
615 |
|
|
/* create a new connection and start a thread to handle it */ |
616 |
|
|
if (!hypervisor_create_conn(clnt)) { |
617 |
|
|
fprintf(stderr,"hypervisor_tcp_server: unable to create new " |
618 |
|
|
"connection for FD %d\n",clnt); |
619 |
|
|
close(clnt); |
620 |
|
|
} |
621 |
|
|
} |
622 |
|
|
|
623 |
|
|
/* Walk through the connection list to eliminate dead connections */ |
624 |
|
|
hypervisor_close_conn_list(TRUE); |
625 |
|
|
} |
626 |
|
|
|
627 |
|
|
/* Close all control sockets */ |
628 |
|
|
printf("Hypervisor: closing control sockets.\n"); |
629 |
|
|
for(i=0;i<fd_count;i++) { |
630 |
|
|
if (fd_array[i] != -1) { |
631 |
|
|
shutdown(fd_array[i],2); |
632 |
|
|
close(fd_array[i]); |
633 |
|
|
} |
634 |
|
|
} |
635 |
|
|
|
636 |
|
|
/* Close all remote client connections */ |
637 |
|
|
printf("Hypervisor: closing remote client connections.\n"); |
638 |
|
|
hypervisor_close_conn_list(FALSE); |
639 |
|
|
return(0); |
640 |
|
|
} |