[or-cvs] r17049: {torvm} Pass vm kernel cmdline via -append option until issue with f (torvm/trunk/build/win32/src/torvm-w32)

[coderman at seul.org]

Author: coderman
Date: 2008-10-06 06:23:52 -0400 (Mon, 06 Oct 2008)
New Revision: 17049

Modified:
   torvm/trunk/build/win32/src/torvm-w32/torvm.c
Log:
Pass vm kernel cmdline via -append option until issue with file handle inheritance and pipes is resolved.  Also added clean and debug options to restore network state after crash and provide additional detail during testing.

Modified: torvm/trunk/build/win32/src/torvm-w32/torvm.c
===================================================================
--- torvm/trunk/build/win32/src/torvm-w32/torvm.c	2008-10-06 07:52:51 UTC (rev 17048)
+++ torvm/trunk/build/win32/src/torvm-w32/torvm.c	2008-10-06 10:23:52 UTC (rev 17049)
@@ -1149,7 +1149,7 @@
               ldebug ("Connection %s default gateway: %s.", ce->name, ce->gateway); 
               if (strcmp(ce->gateway, "0.0.0.0") != 0) {
                 ce->isdefgw = TRUE;
-                ldebug ("Connection %s has the default route.");
+                ldebug ("Connection %s has the default route.", ce->name);
               }
             }
             len = sizeof (name_data);
@@ -1418,14 +1418,15 @@
 }
 
 BOOL buildcmdline (struct s_rconnelem *  brif,
-                   char **cmdline)
+                   BOOL                  usedebug,
+                   char **               cmdline)
 {
   *cmdline = (char *)malloc(4096);
   const char * basecmds = "quiet loglevel=0 clocksource=hpet";
-  const char * dbgcmds = "loglevel=9 clocksource=hpet DEBUGINIT";
+  const char * dbgcmds  = "loglevel=9 clocksource=hpet DEBUGINIT";
   snprintf (*cmdline, 4095,
             "%s IP=%s MASK=%s GW=%s MAC=%s MTU=1480 PRIVIP=10.10.10.1",
-            basecmds,
+            usedebug ? dbgcmds : basecmds,
             brif->ipaddr,
             brif->netmask,
             brif->gateway,
@@ -1441,8 +1442,7 @@
   STARTUPINFO si;
   HANDLE stdin_rd = NULL;
   HANDLE stdin_wr = NULL;
-  HANDLE stdout_rd = NULL;
-  HANDLE stdout_wr = NULL;
+  HANDLE stdout_h = NULL;
   SECURITY_ATTRIBUTES sattr;
   LPTSTR cmd = NULL;
   LPTSTR dir = NULL;
@@ -1458,26 +1458,32 @@
   dir = TOR_VM_BIN;
   cmd = (LPTSTR)malloc(1024);
   snprintf (cmd, 1023,
-            "\"" TOR_VM_BIN "\\qemu.exe\" -name \"Tor VM \" -L . -kernel ../lib/vmlinuz -appendstdin -hda ../state/hdd.img -m %d -std-vga -net nic,model=pcnet,macaddr=%s -net pcap,devicename=\"%s\" -net nic,vlan=1,model=pcnet -net tap,vlan=1,ifname=\"%s\" -net user,vlan=2 -net nic,vlan=2,model=pcnet",
+            "\"" TOR_VM_BIN "\\qemu.exe\" -name \"Tor VM \" -L . -kernel ../lib/vmlinuz -append \"%s\" -hda ../state/hdd.img -m %d -std-vga -net nic,model=pcnet,macaddr=%s -net pcap,devicename=\"%s\" -net nic,vlan=1,model=pcnet -net tap,vlan=1,ifname=\"%s\" -net user,vlan=2 -net nic,vlan=2,model=pcnet",
+            cmdline,
             32,
             macaddr,
             bridgeintf,
             TOR_TAP_NAME);
   ldebug ("Launching Qemu with cmd: %s", cmd);
 
+/* don't use this stdin pipe until the read 0 issue is resolved.
   CreatePipe(&stdin_rd, &stdin_wr, &sattr, 0);
   SetHandleInformation(stdin_wr, HANDLE_FLAG_INHERIT, 0);
 
-  si.hStdError = stderr;
-  si.hStdOutput = stdout;
+  stdout_h = GetStdHandle(STD_OUTPUT_HANDLE);
+
+  si.hStdError = stdout_h;
+  si.hStdOutput = stdout_h;
   si.hStdInput = stdin_rd;
   si.dwFlags |= STARTF_USESTDHANDLES;
+*/
 
   if( !CreateProcess(NULL, 
                      cmd,
                      NULL,   // process handle no inherit
                      NULL,   // thread handle no inherit
-                     FALSE,  // default handle inheritance false
+/*                     TRUE,   // handle inheritance needed for std handles  */
+                     FALSE,
                      opts,
                      NULL,   // environment block
                      dir,
@@ -1487,10 +1493,18 @@
     return FALSE;
   }
 
+/*
   CloseHandle(stdin_rd);
 
-  WriteFile(stdin_wr, cmdline, strlen(cmdline), &numwritten, NULL);
+  if (! WriteFile(stdin_wr, cmdline, strlen(cmdline), &numwritten, NULL)) {
+    lerror ("Failed to write kernel command line to stdin handle.  Error code: %d", GetLastError());
+  }
+  else {
+    ldebug ("Wrote %d bytes of cmdline len %d to qemu stdin.", numwritten, strlen(cmdline));
+  }
+  FlushFileBuffers (stdin_wr);
   CloseHandle(stdin_wr);
+*/
 
   return TRUE;
 }
@@ -1651,9 +1665,26 @@
   int  numintf;
   struct s_rconnelem *connlist = NULL;
   struct s_rconnelem *ce = NULL;
+  BOOL  vmdebug = FALSE;
   BOOL  foundit = FALSE;
   char *  cmdline = NULL;
 
+  /* invocation options:
+   * clean - restore network setup (if saved config exists), clean up tap, etc.
+   * debug - launch vm in debug mode, shell at console in vm, etc.
+   * TODO: implement "real" command line options
+   */
+  if (argc > 1) {
+    if (strcmp(argv[1], "clean") == 0) {
+      uninstalltap();
+      restorenetconfig();
+      exit (0);
+    }
+    if (strcmp(argv[1], "debug") == 0) {
+      vmdebug = TRUE;
+    }
+  }
+
   if (!haveadminrights()) {
     if (promptrunasadmin()) {
       if (respawnasadmin() == TRUE) {
@@ -1692,7 +1723,6 @@
     goto shutdown;
   }
 
-
   numintf = loadnetinfo(&connlist);
 
   if (! configbridge()) {
@@ -1732,7 +1762,7 @@
     lerror ("Unable to find network interface with a default route.");
     goto shutdown;
   }
-  if (! buildcmdline(ce, &cmdline)) {
+  if (! buildcmdline(ce, vmdebug, &cmdline)) {
     lerror ("Unable to generate command line for kernel.");
     goto shutdown;
   }