* external.cc (fillout_pinfo): Pass PID_NOREDIR flag to pinfo init to avoid

finding execed processes twice.
* signal.cc (kill_pgrp): Ditto.
* spawn.cc (spawn_guts): Avoid passing first argument to CreateProcess when
running a windows shell so that CreateProcess will locate the shell.
Reorganize so that correct error is returned when CreateProcess fails.

winsup/cygwin/ChangeLog

@@ -1,3 +1,13 @@
+Thu Oct 19 23:31:41 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* external.cc (fillout_pinfo): Pass PID_NOREDIR flag to pinfo init to
+	avoid finding execed processes twice.
+	* signal.cc (kill_pgrp): Ditto.
+	* spawn.cc (spawn_guts): Avoid passing first argument to CreateProcess
+	when running a windows shell so that CreateProcess will locate the
+	shell.  Reorganize so that correct error is returned when CreateProcess
+	fails.
+
 Thu Oct 19 13:55:31 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* dcrt0.cc (sigthread::init): Correct overzealous ifdef.

winsup/cygwin/external.cc

@@ -44,7 +44,7 @@ fillout_pinfo (pid_t pid, int winpid)
       DWORD thispid = pids[i++];
       if (!thispid)
 	continue;
-      pinfo p (thispid);
+      pinfo p (thispid, PID_NOREDIR);
 
       if (!p)
 	{

winsup/cygwin/pinfo.cc

@@ -163,7 +163,6 @@ pinfo::init (pid_t n, DWORD create, HANDLE in_h)
 	}
       else if (!create)
 	{
-	  /* CGF FIXME -- deal with inheritance after an exec */
 	  h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE, FALSE, mapname);
 	  created = 0;
 	}
@@ -185,6 +184,13 @@ pinfo::init (pid_t n, DWORD create, HANDLE in_h)
       procinfo = (_pinfo *) MapViewOfFile (h, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
       ProtectHandle1 (h, pinfo_shared_handle);
 
+      if ((procinfo->process_state & PID_INITIALIZING) && (create & PID_NOREDIR))
+	{
+	  release ();
+	  set_errno (ENOENT);
+	  return;
+	}
+
       if (procinfo->process_state & PID_EXECED)
 	{
 	  assert (!i);
@@ -232,6 +238,7 @@ pinfo::release ()
       if (((DWORD) procinfo & 0x77000000) == 0x61000000) try_to_debug ();
 #endif
       UnmapViewOfFile (procinfo);
+      procinfo = NULL;
       ForceCloseHandle1 (h, pinfo_shared_handle);
       h = NULL;
     }

winsup/cygwin/signal.cc

@@ -193,7 +193,7 @@ kill_pgrp (pid_t pid, int sig)
   winpids pids;
   for (unsigned i = 0; i < pids.npids; i++)
     {
-      pinfo p (pids[i]);
+      pinfo p (pids[i], PID_NOREDIR);
 
       if (!proc_exists (p))
 	continue;

winsup/cygwin/spawn.cc

@@ -175,9 +175,7 @@ public:
   size_t ix;
   char *buf;
   size_t alloced;
-  linebuf () : ix (0), buf (NULL), alloced (0)
+  linebuf () : ix (0), buf (NULL), alloced (0) {}
-  {
-  }
   ~linebuf () {/* if (buf) free (buf);*/}
   void add (const char *what, int len);
   void add (const char *what) {add (what, strlen (what));}
@@ -349,15 +347,21 @@ spawn_guts (HANDLE hToken, const char * prog_arg, const char *const *argv,
 
   av newargv (ac, argv);
 
+  int null_app_name = 0;
   if (ac == 3 && argv[1][0] == '/' && argv[1][1] == 'c' &&
       (iscmd (argv[0], "command.com") || iscmd (argv[0], "cmd.exe")))
     {
-      one_line.add (argv[0]);
+      real_path.check (prog_arg);
+      if (!real_path.error)
+	one_line.add (real_path);
+      else
+	one_line.add (argv[0]);
       one_line.add (" ");
       one_line.add (argv[1]);
       one_line.add (" ");
       one_line.add (argv[2]);
       strcpy (real_path, argv[0]);
+      null_app_name = 1;
       goto skip_arg_parsing;
     }
 
@@ -525,8 +529,6 @@ skip_arg_parsing:
   si.hStdError = handle (2, 1); /* Get output handle */
   si.cb = sizeof (si);
 
-  syscall_printf ("spawn_guts (%s, %.132s)", (char *) real_path, one_line.buf);
-
   int flags = CREATE_DEFAULT_ERROR_MODE | GetPriorityClass (hMainProc);
 
   if (mode == _P_DETACH || !set_console_state_for_spawn ())
@@ -550,11 +552,15 @@ skip_arg_parsing:
   if (!hToken && myself->token != INVALID_HANDLE_VALUE)
     hToken = myself->token;
 
-cygbench ("spawn-guts");
+  const char *runpath = null_app_name ? NULL : (const char *) real_path;
+
+  syscall_printf ("spawn_guts null_app_name %d (%s, %.132s)", null_app_name, runpath, one_line.buf);
+
+  cygbench ("spawn-guts");
   if (!hToken)
     {
       ciresrv.moreinfo->uid = getuid ();
-      rc = CreateProcess (real_path,	/* image name - with full path */
+      rc = CreateProcess (runpath,	/* image name - with full path */
 			  one_line.buf,	/* what was passed to exec */
 					  /* process security attrs */
 			  allow_ntsec ? sec_user (sa_buf) : &sec_all_nih,
@@ -612,7 +618,7 @@ cygbench ("spawn-guts");
       load_registry_hive (sid);
 
       rc = CreateProcessAsUser (hToken,
-		       real_path,	/* image name - with full path */
+		       runpath,		/* image name - with full path */
 		       one_line.buf,	/* what was passed to exec */
 		       sec_attribs,     /* process security attrs */
 		       sec_attribs,     /* thread security attrs */
@@ -639,10 +645,10 @@ cygbench ("spawn-guts");
      messages].  */
   if (!rc)
     {
-      if (spr)
-	ForceCloseHandle (spr);
       __seterrno ();
       syscall_printf ("CreateProcess failed, %E");
+      if (spr)
+	ForceCloseHandle (spr);
       return -1;
     }