* cygheap.cc (cygheap_user::set_logsrv): Remove.

(cygheap_user::set_domain): Ditto.
* cygheap.h (cygheap_user::set_logsrv): Remove declaration.
(cygheap_user::set_domain): Ditto.
(cygheap_user::env_domain): Declare new method.
(cygheap_user::env_name): Ditto.
* environ.cc (spenvs): Add two environment variables.
* spawn.cc (spawn_guts): Call build_env after RevertToSelf.  Always set
ciresrv.mount_h.
(cygheap_user::ontherange): Recalculate homedrive/homepath if they are empty.
Use env_logsrv to get logon server.
(cygheap_user::env_logsrv): Calculate server name here rather than relying on
it having been previously calculated.
(cygheap_user::env_domain): Ditto for domain name.
(cygheap-user::env_name): New method.
* syscalls.cc (seteuid32): Do not get or set the environment.  Do not call
LookupAccountSid nor internal_getlogin.  Set cygheap->user name and sid from
the passwd entry.
* uinfo.cc (uinfo_init): Only call internal_getlogin when starting from a non
Cygwin process and use the values returned in user.
(internal_getlogin): Simplify to case where starting from a non Cygwin process.
Store return values in user and return void.  Do not set the Windows default
environment.
* dcrt0.cc (dll_crt0_1): Call uinfo_init only when needed.  Do not set
myself->uid nor reset user.sid.
* spawn.cc (spawn_guts): Get the sid from cygheap->user.  Always
RevertToSelf().  Don't set uid in impersonated case.
* cygheap.cc (cygheap_user::set_sid): Do not set orig_sig.
(cygheap_user::set_orig_sid): New.
* cygheap.h: Declare cygheap_user::set_sid.
* winsup.h: Add argument to uinfo_init().

winsup/cygwin/ChangeLog

@@ -1,3 +1,40 @@
+2002-06-14  Christopher Faylor  <cgf@redhat.com>
+
+	* cygheap.cc (cygheap_user::set_logsrv): Remove.
+	(cygheap_user::set_domain): Ditto.
+	* cygheap.h (cygheap_user::set_logsrv): Remove declaration.
+	(cygheap_user::set_domain): Ditto.
+	(cygheap_user::env_domain): Declare new method.
+	(cygheap_user::env_name): Ditto.
+	* environ.cc (spenvs): Add two environment variables.
+	* spawn.cc (spawn_guts): Call build_env after RevertToSelf.  Always set
+	ciresrv.mount_h.
+	(cygheap_user::ontherange): Recalculate homedrive/homepath if they are
+	empty.  Use env_logsrv to get logon server.
+	(cygheap_user::env_logsrv): Calculate server name here rather than
+	relying on it having been previously calculated.
+	(cygheap_user::env_domain): Ditto for domain name.
+	(cygheap-user::env_name): New method.
+
+2002-06-12  Pierre Humblet <pierre.humblet@ieee.org>
+
+	* syscalls.cc (seteuid32): Do not get or set the environment.  Do not
+	call LookupAccountSid nor internal_getlogin.  Set cygheap->user name
+	and sid from the passwd entry.
+	* uinfo.cc (uinfo_init): Only call internal_getlogin when starting from
+	a non Cygwin process and use the values returned in user.
+	(internal_getlogin): Simplify to case where starting from a non Cygwin
+	process.  Store return values in user and return void.  Do not set the
+	Windows default environment.
+	* dcrt0.cc (dll_crt0_1): Call uinfo_init only when needed.  Do not set
+	myself->uid nor reset user.sid.
+	* spawn.cc (spawn_guts): Get the sid from cygheap->user.  Always
+	RevertToSelf().  Don't set uid in impersonated case.
+	* cygheap.cc (cygheap_user::set_sid): Do not set orig_sig.
+	(cygheap_user::set_orig_sid): New.
+	* cygheap.h: Declare cygheap_user::set_sid.
+	* winsup.h: Add argument to uinfo_init().
+
 2002-06-14  Corinna Vinschen  <corinna@vinschen.de>
 
 	* environ.cc (build_env): If realloc moves envblock, move s with it.

winsup/cygwin/cygheap.cc

@@ -445,54 +445,34 @@ cygheap_user::set_name (const char *new_name)
   pname = cstrdup (new_name ? new_name : "");
   homedrive = NULL;
   homepath = NULL;
-}
-
-void
-cygheap_user::set_logsrv (const char *new_logsrv)
-{
   if (plogsrv)
-    cfree (plogsrv - 2);
+    cfree (plogsrv);
-  if (!new_logsrv || !*new_logsrv)
-    plogsrv = NULL;
-  else
-    {
-      plogsrv = (char *) cmalloc (HEAP_STR, strlen (new_logsrv) + 3) + 2;
-      strcpy (plogsrv, new_logsrv);
-    }
-}
-
-void
-cygheap_user::set_domain (const char *new_domain)
-{
   if (pdomain)
     cfree (pdomain);
-  pdomain = (new_domain && *new_domain) ? cstrdup (new_domain) : NULL;
+  plogsrv = pdomain = NULL;
 }
 
 BOOL
 cygheap_user::set_sid (PSID new_sid)
 {
-  if (!new_sid)
+  if (new_sid)
-    {
-      if (psid)
-	cfree (psid);
-      if (orig_psid)
-	cfree (orig_psid);
-      psid = NULL;
-      orig_psid = NULL;
-      return TRUE;
-    }
-  else
     {
       if (!psid)
-	{
+        psid = cmalloc (HEAP_STR, MAX_SID_LEN);
-	  if (!orig_psid)
+      if (psid)
-	    {
+	return CopySid (MAX_SID_LEN, psid, new_sid);
-	      orig_psid = cmalloc (HEAP_STR, MAX_SID_LEN);
-	      CopySid (MAX_SID_LEN, orig_psid, new_sid);
-	    }
-	  psid = cmalloc (HEAP_STR, MAX_SID_LEN);
-	}
-      return CopySid (MAX_SID_LEN, psid, new_sid);
     }
+  return FALSE;
+}
+
+BOOL
+cygheap_user::set_orig_sid ()
+{
+  if (psid)
+    {
+      if (!orig_psid) orig_psid = cmalloc (HEAP_STR, MAX_SID_LEN);
+      if (orig_psid)
+	  return CopySid (MAX_SID_LEN, orig_psid, psid);
+    }
+  return FALSE;
 }

winsup/cygwin/cygheap.h

@@ -124,28 +124,17 @@ public:
   void set_name (const char *new_name);
   const char *name () const { return pname; }
 
-  void set_logsrv (const char *new_logsrv);
-  const char *logsrv () const { return plogsrv; }
-
   const char *env_logsrv ();
   const char *env_homepath ();
   const char *env_homedrive ();
   const char *env_userprofile ();
-
+  const char *env_domain ();
-  void set_domain (const char *new_domain);
+  const char *env_name ();
-  const char *domain () const { return pdomain; }
 
   BOOL set_sid (PSID new_sid);
+  BOOL set_orig_sid ();
   PSID sid () const { return psid; }
   PSID orig_sid () const { return orig_psid; }
-
-  void operator =(cygheap_user &user)
-  {
-    set_name (user.name ());
-    set_logsrv (user.logsrv ());
-    set_domain (user.domain ());
-    set_sid (user.sid ());
-  }
   const char *ontherange (homebodies what, struct passwd * = NULL);
 };
 

winsup/cygwin/dcrt0.cc

@@ -608,7 +608,6 @@ dll_crt0_1 ()
 				  DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE))
 	      h = NULL;
 	    set_myself (mypid, h);
-	    myself->uid = spawn_info->moreinfo->uid;
 	    __argc = spawn_info->moreinfo->argc;
 	    __argv = spawn_info->moreinfo->argv;
 	    envp = spawn_info->moreinfo->envp;
@@ -623,8 +622,6 @@ dll_crt0_1 ()
 	      }
 	    if (child_proc_info->subproc_ready)
 	      ProtectHandle (child_proc_info->subproc_ready);
-	    if (myself->uid == ILLEGAL_UID)
-	      cygheap->user.set_sid (NULL);
 	    break;
 	}
     }
@@ -679,8 +676,9 @@ dll_crt0_1 ()
   /* Allocate cygheap->fdtab */
   dtable_init ();
 
-/* Initialize uid, gid. */
+  /* Initialize uid, gid if necessary. */
-  uinfo_init ();
+  if (child_proc_info == NULL || spawn_info->moreinfo->uid == ILLEGAL_UID)
+    uinfo_init ();
 
   /* Initialize signal/subprocess handling. */
   sigproc_init ();

winsup/cygwin/environ.cc

@@ -765,6 +765,8 @@ static NO_COPY spenv spenvs[] =
   {"LOGONSERVER=", &cygheap_user::env_logsrv},
   {"SYSTEMDRIVE=", NULL},
   {"SYSTEMROOT=", NULL},
+  {"USERDOMAIN=", &cygheap_user::env_name},
+  {"USERNAME=", &cygheap_user::env_domain},
   {"USERPROFILE=", &cygheap_user::env_userprofile},
 };
 

winsup/cygwin/spawn.cc

@@ -567,8 +567,6 @@ spawn_guts (const char * prog_arg, const char *const *argv,
   ciresrv.moreinfo->argc = newargv.argc;
   ciresrv.moreinfo->argv = newargv;
   ciresrv.hexec_proc = hexec_proc;
-  ciresrv.moreinfo->envp = build_env (envp, envblock, ciresrv.moreinfo->envc,
-				      real_path.iscygexec ());
 
   if (mode != _P_OVERLAY ||
       !DuplicateHandle (hMainProc, myself.shared_handle (), hMainProc,
@@ -610,14 +608,14 @@ spawn_guts (const char * prog_arg, const char *const *argv,
   char sa_buf[1024];
 
   cygbench ("spawn-guts");
+  ciresrv.mount_h = cygwin_mount_h;
+
   if (!cygheap->user.impersonated || cygheap->user.token == INVALID_HANDLE_VALUE)
     {
       PSECURITY_ATTRIBUTES sec_attribs = sec_user_nih (sa_buf);
-      ciresrv.moreinfo->uid = getuid32 ();
-      /* FIXME: This leaks a handle in the CreateProcessAsUser case since the
-	 child process doesn't know about cygwin_mount_h. */
-      ciresrv.mount_h = cygwin_mount_h;
       newheap = cygheap_setup_for_child (&ciresrv, cygheap->fdtab.need_fixup_before ());
+      ciresrv.moreinfo->envp = build_env (envp, envblock, ciresrv.moreinfo->envc,
+					  real_path.iscygexec ());
       rc = CreateProcess (runpath,	/* image name - with full path */
 			  one_line.buf,	/* what was passed to exec */
 			  sec_attribs,	/* process security attrs */
@@ -631,16 +629,9 @@ spawn_guts (const char * prog_arg, const char *const *argv,
     }
   else
     {
-      cygsid sid;
+      PSID sid = cygheap->user.sid ();
-      DWORD ret_len;
+
-      if (!GetTokenInformation (cygheap->user.token, TokenUser, &sid,
+      /* Set security attributes with sid */
-				sizeof sid, &ret_len))
-	{
-	  sid = NO_SID;
-	  system_printf ("GetTokenInformation: %E");
-	}
-      /* Retrieve security attributes before setting psid to NULL
-	 since it's value is needed by `sec_user'. */
       PSECURITY_ATTRIBUTES sec_attribs = sec_user_nih (sa_buf, sid);
 
       RevertToSelf ();
@@ -655,7 +646,6 @@ spawn_guts (const char * prog_arg, const char *const *argv,
       char wstname[1024];
       char dskname[1024];
 
-      ciresrv.moreinfo->uid = ILLEGAL_UID;
       hwst = GetProcessWindowStation ();
       SetUserObjectSecurity (hwst, &dsi, get_null_sd ());
       GetUserObjectInformation (hwst, UOI_NAME, wstname, 1024, &n);
@@ -667,6 +657,8 @@ spawn_guts (const char * prog_arg, const char *const *argv,
       si.lpDesktop = wstname;
 
       newheap = cygheap_setup_for_child (&ciresrv, cygheap->fdtab.need_fixup_before ());
+      ciresrv.moreinfo->envp = build_env (envp, envblock, ciresrv.moreinfo->envc,
+					  real_path.iscygexec ());
       rc = CreateProcessAsUser (cygheap->user.token,
 		       runpath,		/* image name - with full path */
 		       one_line.buf,	/* what was passed to exec */

winsup/cygwin/syscalls.cc

@@ -1943,8 +1943,6 @@ mkfifo (const char *_path, mode_t mode)
   return -1;
 }
 
-extern struct passwd *internal_getlogin (cygheap_user &user);
-
 /* seteuid: standards? */
 extern "C" int
 seteuid32 (__uid32_t uid)
@@ -1958,17 +1956,11 @@ seteuid32 (__uid32_t uid)
     }
 
   sigframe thisframe (mainthread);
-  DWORD ulen = UNLEN + 1;
-  DWORD dlen = INTERNET_MAX_HOST_NAME_LENGTH + 1;
-  char orig_username[UNLEN + 1];
-  char orig_domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
-  char username[UNLEN + 1];
-  char domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
   cygsid usersid, pgrpsid;
   HANDLE ptok, sav_token;
   BOOL sav_impersonated, sav_token_is_internal_token;
   BOOL process_ok, explicitly_created_token = FALSE;
-  struct passwd * pw_new, * pw_cur;
+  struct passwd * pw_new;
   cygheap_user user;
   PSID origpsid, psid2 = NO_SID;
 
@@ -1984,12 +1976,6 @@ seteuid32 (__uid32_t uid)
   /* Save current information */
   sav_token = cygheap->user.token;
   sav_impersonated = cygheap->user.impersonated;
-  char *env;
-  orig_username[0] = orig_domain[0] = '\0';
-  if ((env = getenv ("USERNAME")))
-    strlcpy (orig_username, env, sizeof(orig_username));
-  if ((env = getenv ("USERDOMAIN")))
-    strlcpy (orig_domain, env, sizeof(orig_domain));
 
   RevertToSelf();
   if (!OpenProcessToken (GetCurrentProcess (),
@@ -2065,16 +2051,6 @@ seteuid32 (__uid32_t uid)
 	}
     }
 
-  /* Lookup username and domain before impersonating,
-     LookupAccountSid() returns a different answer afterwards. */
-  SID_NAME_USE use;
-  if (!LookupAccountSid (NULL, usersid, username, &ulen,
-			 domain, &dlen, &use))
-    {
-      debug_printf ("LookupAccountSid (): %E");
-      __seterrno ();
-      goto failed;
-    }
   /* If using the token, set info and impersonate */
   if (!process_ok)
     {
@@ -2104,38 +2080,17 @@ seteuid32 (__uid32_t uid)
       cygheap->user.impersonated = TRUE;
     }
 
-  /* user.token is used in internal_getlogin () to determine if
+  /* If sav_token was internally created and is replaced, destroy it. */
-     impersonation is active. If so, the token is used for
+  if (sav_token != INVALID_HANDLE_VALUE &&
-     retrieving user's SID. */
+      sav_token != cygheap->user.token &&
-  user.token = cygheap->user.impersonated ? cygheap->user.token
+      sav_token_is_internal_token)
-					  : INVALID_HANDLE_VALUE;
+      CloseHandle (sav_token);
-  /* Unsetting these two env vars is necessary to get NetUserGetInfo()
+  cygheap->user.set_name (pw_new->pw_name);
-     called in internal_getlogin ().  Otherwise the wrong path is used
+  cygheap->user.set_sid (usersid);
-     after a user switch, probably. */
+  myself->uid = uid;
-  unsetenv ("HOMEDRIVE");
+  return 0;
-  unsetenv ("HOMEPATH");
-  setenv ("USERDOMAIN", domain, 1);
-  setenv ("USERNAME", username, 1);
-  pw_cur = internal_getlogin (user);
-  if (pw_cur == pw_new)
-    {
-      /* If sav_token was internally created and is replaced, destroy it. */
-      if (sav_token != INVALID_HANDLE_VALUE &&
-	  sav_token != cygheap->user.token &&
-	  sav_token_is_internal_token)
-	CloseHandle (sav_token);
-      myself->uid = uid;
-      cygheap->user = user;
-      return 0;
-    }
-  debug_printf ("Diffs!!! token: %d, cur: %d, new: %d, orig: %d",
-		cygheap->user.token, pw_cur->pw_uid,
-		pw_new->pw_uid, cygheap->user.orig_uid);
-  set_errno (EPERM);
 
  failed:
-  setenv ("USERNAME", orig_username, 1);
-  setenv ("USERDOMAIN", orig_domain, 1);
   cygheap->user.token = sav_token;
   cygheap->user.impersonated = sav_impersonated;
   if ( cygheap->user.token != INVALID_HANDLE_VALUE &&

winsup/cygwin/uinfo.cc

@@ -27,100 +27,37 @@ details. */
 #include "cygerrno.h"
 #include "cygheap.h"
 #include "registry.h"
+#include "child_info.h"
 
-struct passwd *
+void
 internal_getlogin (cygheap_user &user)
 {
-  char buf[512];
-  char username[UNLEN + 1];
-  DWORD username_len = UNLEN + 1;
   struct passwd *pw = NULL;
 
-  if (!GetUserName (username, &username_len))
-    user.set_name (NULL);
-  else
-    user.set_name (username);
-  debug_printf ("GetUserName() = %s", user.name ());
-
   if (wincap.has_security ())
     {
-      LPWKSTA_USER_INFO_1 wui;
+      HANDLE ptok = INVALID_HANDLE_VALUE;
-      NET_API_STATUS ret;
-      char *env;
-
-      user.set_logsrv (NULL);
-      /* First trying to get logon info from environment */
-      if (!*user.name () && (env = getenv ("USERNAME")) != NULL)
-	user.set_name (env);
-      if ((env = getenv ("USERDOMAIN")) != NULL)
-	user.set_domain (env);
-      if ((env = getenv ("LOGONSERVER")) != NULL)
-	user.set_logsrv (env + 2); /* filter leading double backslashes */
-      if (user.name () && user.domain ())
-	debug_printf ("User: %s, Domain: %s, Logon Server: %s",
-		      user.name (), user.domain (), user.logsrv ());
-      else if (!(ret = NetWkstaUserGetInfo (NULL, 1, (LPBYTE *) &wui)))
-	{
-	  sys_wcstombs (buf, wui->wkui1_username, UNLEN + 1);
-	  user.set_name (buf);
-	  sys_wcstombs (buf, wui->wkui1_logon_server,
-			INTERNET_MAX_HOST_NAME_LENGTH + 1);
-	  user.set_logsrv (buf);
-	  sys_wcstombs (buf, wui->wkui1_logon_domain,
-			INTERNET_MAX_HOST_NAME_LENGTH + 1);
-	  user.set_domain (buf);
-	  NetApiBufferFree (wui);
-	}
-      if (!user.logsrv () && user.domain () &&
-          get_logon_server (user.domain (), buf, NULL))
-	user.set_logsrv (buf + 2);
-      debug_printf ("Domain: %s, Logon Server: %s, Windows Username: %s",
-		    user.domain (), user.logsrv (), user.name ());
-
-
-      HANDLE ptok = user.token; /* Which is INVALID_HANDLE_VALUE if no
-				   impersonation took place. */
       DWORD siz;
       cygsid tu;
-      ret = 0;
+      DWORD ret = 0;
 
-      /* Try to get the SID either from already impersonated token
+      /* Try to get the SID either from current process and
-	 or from current process first. To differ that two cases is
+	 store it in user.psid */
-	 important, because you can't rely on the user information
+      if (!OpenProcessToken (GetCurrentProcess (),
-	 in a process token of a currently impersonated process. */
+			     TOKEN_ADJUST_DEFAULT | TOKEN_QUERY,
-      if (ptok == INVALID_HANDLE_VALUE
+			     &ptok))
-	  && !OpenProcessToken (GetCurrentProcess (),
+	system_printf ("OpenProcessToken(): %E\n");
-				TOKEN_ADJUST_DEFAULT | TOKEN_QUERY,
-				&ptok))
-	debug_printf ("OpenProcessToken(): %E\n");
       else if (!GetTokenInformation (ptok, TokenUser, &tu, sizeof tu, &siz))
-	debug_printf ("GetTokenInformation(): %E");
+	system_printf ("GetTokenInformation(): %E");
       else if (!(ret = user.set_sid (tu)))
-	debug_printf ("Couldn't retrieve SID from access token!");
+        system_printf ("Couldn't retrieve SID from access token!");
-      /* If that failes, try to get the SID from localhost. This can only
+       /* We must set the user name, uid and gid.
-	 be done if a domain is given because there's a chance that a local
+	 If we have a SID, try to get the corresponding Cygwin
-	 and a domain user may have the same name. */
+	 password entry. Set user name which can be different
-      if (!ret && user.domain ())
+	 from the Windows user name */
-	{
+       if (ret)
-	  char domain[DNLEN + 1];
+	 {
-	  DWORD dlen = sizeof (domain);
+	  cygsid gsid (NO_SID);
-	  siz = sizeof (tu);
-	  SID_NAME_USE use = SidTypeInvalid;
-	  /* Concat DOMAIN\USERNAME for the next lookup */
-	  strcat (strcat (strcpy (buf, user.domain ()), "\\"), user.name ());
-          if (!LookupAccountName (NULL, buf, tu, &siz,
-	                          domain, &dlen, &use) ||
-               !legal_sid_type (use))
-	        debug_printf ("Couldn't retrieve SID locally!");
-	  else user.set_sid (tu);
-
-	}
-
-      /* If we have a SID, try to get the corresponding Cygwin user name
-	 which can be different from the Windows user name. */
-      cygsid gsid (NO_SID);
-      if (ret)
-	{
 	  cygsid psid;
 
 	  for (int pidx = 0; (pw = internal_getpwent (pidx)); ++pidx)
@@ -133,72 +70,51 @@ internal_getlogin (cygheap_user &user)
 		      gsid = NO_SID;
 		break;
 	      }
-	}
 
-      /* If this process is started from a non Cygwin process,
+	  /* Set token owner to the same value as token user and
-	 set token owner to the same value as token user and
+	     primary group to the group in /etc/passwd. */
-	 primary group to the group which is set as primary group
-	 in /etc/passwd. */
-      if (ptok != INVALID_HANDLE_VALUE && !myself->ppid_handle)
-	{
 	  if (!SetTokenInformation (ptok, TokenOwner, &tu, sizeof tu))
 	    debug_printf ("SetTokenInformation(TokenOwner): %E");
 	  if (gsid && !SetTokenInformation (ptok, TokenPrimaryGroup,
 					    &gsid, sizeof gsid))
 	    debug_printf ("SetTokenInformation(TokenPrimaryGroup): %E");
-	}
+	 }
 
-      /* Close token only if it's a result from OpenProcessToken(). */
+      if (ptok != INVALID_HANDLE_VALUE)
-      if (ptok != INVALID_HANDLE_VALUE
-	  && user.token == INVALID_HANDLE_VALUE)
 	CloseHandle (ptok);
     }
 
-  debug_printf ("Cygwins Username: %s", user.name ());
-
   if (!pw)
     pw = getpwnam (user.name ());
 
-  if (!myself->ppid_handle)
+  if (pw)
-    (void) cygheap->user.ontherange (CH_HOME, pw);
+    {
+      user.real_uid = pw->pw_uid;
+      user.real_gid = pw->pw_gid;
+    }
+  else
+    {
+      user.real_uid = DEFAULT_UID;
+      user.real_gid = DEFAULT_GID;
+    }
 
-  return pw;
+  (void) cygheap->user.ontherange (CH_HOME, pw);
+
+  return;
 }
 
 void
 uinfo_init ()
 {
-  struct passwd *p;
+  if (!child_proc_info)
+    internal_getlogin (cygheap->user); /* Set the cygheap->user. */
 
-  /* Initialize to non impersonated values.
+  /* Real and effective uid/gid are identical on process start up. */
-     Setting `impersonated' to TRUE seems to be wrong but it
+  myself->uid = cygheap->user.orig_uid = cygheap->user.real_uid;
-     isn't. Impersonated is thought as "Current User and `token'
+  myself->gid = cygheap->user.orig_gid = cygheap->user.real_gid;
-     are coincident". See seteuid() for the mechanism behind that. */
+  cygheap->user.set_orig_sid();      /* Update the original sid */
-  if (cygheap->user.token != INVALID_HANDLE_VALUE && cygheap->user.token != NULL)
-    CloseHandle (cygheap->user.token);
-  cygheap->user.token = INVALID_HANDLE_VALUE;
-  cygheap->user.impersonated = TRUE;
 
-  /* If uid is ILLEGAL_UID, the process is started from a non cygwin
+  cygheap->user.token = INVALID_HANDLE_VALUE; /* No token present */
-     process or the user context was changed in spawn.cc */
-  if (myself->uid == ILLEGAL_UID)
-    if ((p = internal_getlogin (cygheap->user)) != NULL)
-      {
-	myself->uid = p->pw_uid;
-	/* Set primary group only if process has been started from a
-	   non cygwin process. */
-	if (!myself->ppid_handle)
-	  myself->gid = p->pw_gid;
-      }
-    else
-      {
-	myself->uid = DEFAULT_UID;
-	myself->gid = DEFAULT_GID;
-      }
-  /* Real and effective uid/gid are always identical on process start up.
-     This is at least true for NT/W2K. */
-  cygheap->user.orig_uid = cygheap->user.real_uid = myself->uid;
-  cygheap->user.orig_gid = cygheap->user.real_gid = myself->gid;
 }
 
 extern "C" char *
@@ -317,7 +233,7 @@ cygheap_user::ontherange (homebodies what, struct passwd *pw)
 	}
     }
 
-  if (homedrive == NULL)
+  if (homedrive == NULL || !homedrive[0])
     {
       if (!pw)
 	pw = getpwnam (name ());
@@ -328,10 +244,10 @@ cygheap_user::ontherange (homebodies what, struct passwd *pw)
 	  sys_mbstowcs (wuser, name (), sizeof (wuser) / sizeof (*wuser));
 	  if ((ret = NetUserGetInfo (NULL, wuser, 3, (LPBYTE *)&ui)))
 	    {
-	      if (logsrv ())
+	      if (env_logsrv ())
 		{
 		  WCHAR wlogsrv[INTERNET_MAX_HOST_NAME_LENGTH + 3];
-		  strcat (strcpy (buf, "\\\\"), logsrv ());
+		  strcpy (buf, env_logsrv ());
 		  sys_mbstowcs (wlogsrv, buf, sizeof (wlogsrv) / sizeof(*wlogsrv));
 		  ret = NetUserGetInfo (wlogsrv, wuser, 3,(LPBYTE *)&ui);
 		}
@@ -383,17 +299,41 @@ cygheap_user::ontherange (homebodies what, struct passwd *pw)
 const char *
 cygheap_user::env_logsrv ()
 {
-  char *p = plogsrv - 2;
+  if (plogsrv)
+    return plogsrv;
 
-  *p = p[1] = '\\';
+  char logsrv[INTERNET_MAX_HOST_NAME_LENGTH + 3];
-  return p;
+  if (!get_logon_server (env_domain (), logsrv, NULL))
+    return NULL;
+  return plogsrv = cstrdup (logsrv);
+}
+
+const char *
+cygheap_user::env_domain ()
+{
+  if (pdomain)
+    return pdomain;
+
+  char username[UNLEN + 1];
+  DWORD ulen = sizeof (username);
+  char userdomain[DNLEN + 1];
+  DWORD dlen = sizeof (userdomain);
+  SID_NAME_USE use;
+
+  if (!LookupAccountSid (NULL, sid (), username, &ulen,
+			 userdomain, &dlen, &use))
+    {
+      __seterrno ();
+      return NULL;
+    }
+  return pdomain = cstrdup (userdomain);
 }
 
 const char *
 cygheap_user::env_userprofile ()
 {
   static char buf[512]; /* FIXME: This shouldn't be static. */
-  if (strcasematch (name (), "SYSTEM") || !domain () || !logsrv ())
+  if (strcasematch (name (), "SYSTEM") || !env_domain () || !env_logsrv ())
     return NULL;
 
   if (get_registry_hive_path (sid (), buf))
@@ -413,3 +353,9 @@ cygheap_user::env_homedrive ()
 {
   return ontherange (CH_HOMEDRIVE);
 }
+
+const char *
+cygheap_user::env_name ()
+{
+  return name ();
+}