text: /*
   * Ntdll environment functions
   *
   * Copyright 1996, 1998 Alexandre Julliard
   * Copyright 2003       Eric Pouech
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  #include "config.h"
  
  #include <assert.h>
  #include <errno.h>
  #include <stdarg.h>
  #include <sys/types.h>
  #ifdef HAVE_SYS_STAT_H
  # include <sys/stat.h>
  #endif
  #ifdef HAVE_UNISTD_H
  # include <unistd.h>
  #endif
  
  #include "ntstatus.h"
  #define WIN32_NO_STATUS
  #include "windef.h"
  #include "winternl.h"
  #include "wine/library.h"
  #include "wine/debug.h"
  #include "ntdll_misc.h"
  #include "winnt.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(environ);
  
  static WCHAR empty[] = {0};
  static const UNICODE_STRING empty_str = { 0, sizeof(empty), empty };
  static const UNICODE_STRING null_str = { 0, 0, NULL };
  
  static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
  
  static const WCHAR windows_dir[] = {'C',':','\\','w','i','n','d','o','w','s',0};
  
  static BOOL first_prefix_start;  /* first ever process start in this prefix? */
  
  static inline SIZE_T get_env_length( const WCHAR *env )
  {
      const WCHAR *end = env;
      while (*end) end += wcslen(end) + 1;
      return end + 1 - env;
  }
  
  #ifdef __APPLE__
  extern char **__wine_get_main_environment(void);
  #else
  extern char **__wine_main_environ;
  static char **__wine_get_main_environment(void) { return __wine_main_environ; }
  #endif
  
  
  /***********************************************************************
   *           is_special_env_var
   *
   * Check if an environment variable needs to be handled specially when
   * passed through the Unix environment (i.e. prefixed with "WINE").
   */
  static inline BOOL is_special_env_var( const char *var )
  {
      return (!strncmp( var, "PATH=", sizeof("PATH=")-1 ) ||
              !strncmp( var, "PWD=", sizeof("PWD=")-1 ) ||
              !strncmp( var, "HOME=", sizeof("HOME=")-1 ) ||
              !strncmp( var, "TEMP=", sizeof("TEMP=")-1 ) ||
              !strncmp( var, "TMP=", sizeof("TMP=")-1 ) ||
              !strncmp( var, "QT_", sizeof("QT_")-1 ) ||
              !strncmp( var, "VK_", sizeof("VK_")-1 ));
  }
  
  
  /***********************************************************************
   *           set_env_var
   */
  static void set_env_var( WCHAR **env, const WCHAR *name, const WCHAR *val )
  {
      UNICODE_STRING nameW, valW;
  
      RtlInitUnicodeString( &nameW, name );
      RtlInitUnicodeString( &valW, val );
      RtlSetEnvironmentVariable( env, &nameW, &valW );
  }
  
  
  /***********************************************************************
   *           set_registry_variables
   *
   * Set environment variables by enumerating the values of a key;
   * helper for set_registry_environment().
   * Note that Windows happily truncates the value if it's too big.
   */
  static void set_registry_variables( WCHAR **env, HANDLE hkey, ULONG type )
  {
      static const WCHAR pathW[] = {'P','A','T','H'};
      static const WCHAR sep[] = {';',0};
      UNICODE_STRING env_name, env_value;
      NTSTATUS status;
      DWORD size;
      int index;
      char buffer[1024*sizeof(WCHAR) + sizeof(KEY_VALUE_FULL_INFORMATION)];
      WCHAR tmpbuf[1024];
      UNICODE_STRING tmp;
      KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
  
      tmp.Buffer = tmpbuf;
      tmp.MaximumLength = sizeof(tmpbuf);
  
      for (index = 0; ; index++)
      {
          status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
                                        buffer, sizeof(buffer), &size );
          if (status != STATUS_SUCCESS && status != STATUS_BUFFER_OVERFLOW) break;
          if (info->Type != type) continue;
          env_name.Buffer = info->Name;
          env_name.Length = env_name.MaximumLength = info->NameLength;
          env_value.Buffer = (WCHAR *)(buffer + info->DataOffset);
          env_value.Length = info->DataLength;
          env_value.MaximumLength = sizeof(buffer) - info->DataOffset;
          if (env_value.Length && !env_value.Buffer[env_value.Length/sizeof(WCHAR)-1])
              env_value.Length -= sizeof(WCHAR);  /* don't count terminating null if any */
          if (!env_value.Length) continue;
          if (info->Type == REG_EXPAND_SZ)
          {
              status = RtlExpandEnvironmentStrings_U( *env, &env_value, &tmp, NULL );
              if (status != STATUS_SUCCESS && status != STATUS_BUFFER_OVERFLOW) continue;
              RtlCopyUnicodeString( &env_value, &tmp );
          }
          /* PATH is magic */
          if (env_name.Length == sizeof(pathW) &&
              !wcsnicmp( env_name.Buffer, pathW, ARRAY_SIZE( pathW )) &&
              !RtlQueryEnvironmentVariable_U( *env, &env_name, &tmp ))
          {
              RtlAppendUnicodeToString( &tmp, sep );
              if (RtlAppendUnicodeStringToString( &tmp, &env_value )) continue;
              RtlCopyUnicodeString( &env_value, &tmp );
          }
          RtlSetEnvironmentVariable( env, &env_name, &env_value );
      }
  }
  
  
  /***********************************************************************
   *           set_registry_environment
   *
   * Set the environment variables specified in the registry.
   *
   * Note: Windows handles REG_SZ and REG_EXPAND_SZ in one pass with the
   * consequence that REG_EXPAND_SZ cannot be used reliably as it depends
   * on the order in which the variables are processed. But on Windows it
   * does not really matter since they only use %SystemDrive% and
   * %SystemRoot% which are predefined. But Wine defines these in the
   * registry, so we need two passes.
   */
  static BOOL set_registry_environment( WCHAR **env, BOOL first_time )
  {
      static const WCHAR env_keyW[] = {'\\','R','e','g','i','s','t','r','y','\\',
                                       'M','a','c','h','i','n','e','\\',
                                       'S','y','s','t','e','m','\\',
                                       'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
                                       'C','o','n','t','r','o','l','\\',
                                       'S','e','s','s','i','o','n',' ','M','a','n','a','g','e','r','\\',
                                       'E','n','v','i','r','o','n','m','e','n','t',0};
      static const WCHAR envW[] = {'E','n','v','i','r','o','n','m','e','n','t',0};
      static const WCHAR volatile_envW[] = {'V','o','l','a','t','i','l','e',' ','E','n','v','i','r','o','n','m','e','n','t',0};
  
      OBJECT_ATTRIBUTES attr;
      UNICODE_STRING nameW;
      HANDLE hkey;
      BOOL ret = FALSE;
  
      /* first the system environment variables */
      InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
      RtlInitUnicodeString( &nameW, env_keyW );
      if (first_time && !NtOpenKey( &hkey, KEY_READ, &attr ))
      {
          set_registry_variables( env, hkey, REG_SZ );
          set_registry_variables( env, hkey, REG_EXPAND_SZ );
          NtClose( hkey );
      }
      else ret = TRUE;
  
      /* then the ones for the current user */
      if (RtlOpenCurrentUser( KEY_READ, &attr.RootDirectory ) != STATUS_SUCCESS) return ret;
      RtlInitUnicodeString( &nameW, envW );
      if (first_time && !NtOpenKey( &hkey, KEY_READ, &attr ))
      {
          set_registry_variables( env, hkey, REG_SZ );
          set_registry_variables( env, hkey, REG_EXPAND_SZ );
          NtClose( hkey );
      }
  
      RtlInitUnicodeString( &nameW, volatile_envW );
      if (!NtOpenKey( &hkey, KEY_READ, &attr ))
      {
          set_registry_variables( env, hkey, REG_SZ );
          set_registry_variables( env, hkey, REG_EXPAND_SZ );
          NtClose( hkey );
      }
  
      NtClose( attr.RootDirectory );
      return ret;
  }
  
  
  /***********************************************************************
   *           get_registry_value
   */
  static WCHAR *get_registry_value( WCHAR *env, HKEY hkey, const WCHAR *name )
  {
      char buffer[1024 * sizeof(WCHAR) + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
      KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
      DWORD len, size = sizeof(buffer);
      WCHAR *ret = NULL;
      UNICODE_STRING nameW;
  
      RtlInitUnicodeString( &nameW, name );
      if (NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, buffer, size, &size ))
          return NULL;
  
      if (size <= FIELD_OFFSET( KEY_VALUE_PARTIAL_INFORMATION, Data )) return NULL;
      len = (size - FIELD_OFFSET( KEY_VALUE_PARTIAL_INFORMATION, Data )) / sizeof(WCHAR);
  
      if (info->Type == REG_EXPAND_SZ)
      {
          UNICODE_STRING value, expanded;
  
          value.MaximumLength = len * sizeof(WCHAR);
          value.Buffer = (WCHAR *)info->Data;
          if (!value.Buffer[len - 1]) len--;  /* don't count terminating null if any */
          value.Length = len * sizeof(WCHAR);
          expanded.Length = expanded.MaximumLength = 1024 * sizeof(WCHAR);
          if (!(expanded.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, expanded.MaximumLength )))
              return NULL;
          if (!RtlExpandEnvironmentStrings_U( env, &value, &expanded, NULL )) ret = expanded.Buffer;
          else RtlFreeUnicodeString( &expanded );
      }
      else if (info->Type == REG_SZ)
      {
          if ((ret = RtlAllocateHeap( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) )))
          {
              memcpy( ret, info->Data, len * sizeof(WCHAR) );
              ret[len] = 0;
          }
      }
      return ret;
  }
  
  
  /***********************************************************************
   *           set_additional_environment
   *
   * Set some additional environment variables not specified in the registry.
   */
  static void set_additional_environment( WCHAR **env )
  {
      static const WCHAR profile_keyW[] = {'\\','R','e','g','i','s','t','r','y','\\',
                                           'M','a','c','h','i','n','e','\\',
                                           'S','o','f','t','w','a','r','e','\\',
                                           'M','i','c','r','o','s','o','f','t','\\',
                                           'W','i','n','d','o','w','s',' ','N','T','\\',
                                           'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
                                           'P','r','o','f','i','l','e','L','i','s','t',0};
      static const WCHAR computer_keyW[] = {'\\','R','e','g','i','s','t','r','y','\\',
                                            'M','a','c','h','i','n','e','\\',
                                            'S','y','s','t','e','m','\\',
                                            'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
                                            'C','o','n','t','r','o','l','\\',
                                            'C','o','m','p','u','t','e','r','N','a','m','e','\\',
                                            'A','c','t','i','v','e','C','o','m','p','u','t','e','r','N','a','m','e',0};
      static const WCHAR computer_valueW[] = {'C','o','m','p','u','t','e','r','N','a','m','e',0};
      static const WCHAR public_valueW[] = {'P','u','b','l','i','c',0};
      static const WCHAR computernameW[] = {'C','O','M','P','U','T','E','R','N','A','M','E',0};
      static const WCHAR allusersW[] = {'A','L','L','U','S','E','R','S','P','R','O','F','I','L','E',0};
      static const WCHAR programdataW[] = {'P','r','o','g','r','a','m','D','a','t','a',0};
      static const WCHAR publicW[] = {'P','U','B','L','I','C',0};
      OBJECT_ATTRIBUTES attr;
      UNICODE_STRING nameW;
      WCHAR *val;
      HANDLE hkey;
  
      /* set the user profile variables */
  
      InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
      RtlInitUnicodeString( &nameW, profile_keyW );
      if (!NtOpenKey( &hkey, KEY_READ, &attr ))
      {
          if ((val = get_registry_value( *env, hkey, programdataW )))
          {
              set_env_var( env, allusersW, val );
              set_env_var( env, programdataW, val );
              RtlFreeHeap( GetProcessHeap(), 0, val );
          }
          if ((val = get_registry_value( *env, hkey, public_valueW )))
          {
              set_env_var( env, publicW, val );
              RtlFreeHeap( GetProcessHeap(), 0, val );
          }
          NtClose( hkey );
      }
  
      /* set the computer name */
  
      RtlInitUnicodeString( &nameW, computer_keyW );
      if (!NtOpenKey( &hkey, KEY_READ, &attr ))
      {
          if ((val = get_registry_value( *env, hkey, computer_valueW )))
          {
              set_env_var( env, computernameW, val );
              RtlFreeHeap( GetProcessHeap(), 0, val );
          }
          NtClose( hkey );
      }
  }
  
  
  /* set an environment variable for one of the wine path variables */
  static void set_wine_path_variable( WCHAR **env, const WCHAR *name, const char *unix_path )
  {
      UNICODE_STRING nt_name, var_name;
      ANSI_STRING unix_name;
  
      RtlInitUnicodeString( &var_name, name );
      if (unix_path)
      {
          RtlInitAnsiString( &unix_name, unix_path );
          if (wine_unix_to_nt_file_name( &unix_name, &nt_name )) return;
          RtlSetEnvironmentVariable( env, &var_name, &nt_name );
          RtlFreeUnicodeString( &nt_name );
      }
      else RtlSetEnvironmentVariable( env, &var_name, NULL );
  }
  
  
  /***********************************************************************
   *           set_wow64_environment
   *
   * Set the environment variables that change across 32/64/Wow64.
   */
  static void set_wow64_environment( WCHAR **env )
  {
      static WCHAR archW[]    = {'P','R','O','C','E','S','S','O','R','_','A','R','C','H','I','T','E','C','T','U','R','E',0};
      static WCHAR arch6432W[] = {'P','R','O','C','E','S','S','O','R','_','A','R','C','H','I','T','E','W','6','4','3','2',0};
      static const WCHAR x86W[] = {'x','8','6',0};
      static const WCHAR versionW[] = {'\\','R','e','g','i','s','t','r','y','\\',
                                       'M','a','c','h','i','n','e','\\',
                                       'S','o','f','t','w','a','r','e','\\',
                                       'M','i','c','r','o','s','o','f','t','\\',
                                       'W','i','n','d','o','w','s','\\',
                                       'C','u','r','r','e','n','t','V','e','r','s','i','o','n',0};
      static const WCHAR progdirW[]   = {'P','r','o','g','r','a','m','F','i','l','e','s','D','i','r',0};
      static const WCHAR progdir86W[] = {'P','r','o','g','r','a','m','F','i','l','e','s','D','i','r',' ','(','x','8','6',')',0};
      static const WCHAR progfilesW[] = {'P','r','o','g','r','a','m','F','i','l','e','s',0};
      static const WCHAR progfiles86W[] = {'P','r','o','g','r','a','m','F','i','l','e','s','(','x','8','6',')',0};
      static const WCHAR progw6432W[] = {'P','r','o','g','r','a','m','W','6','4','3','2',0};
      static const WCHAR commondirW[]   = {'C','o','m','m','o','n','F','i','l','e','s','D','i','r',0};
      static const WCHAR commondir86W[] = {'C','o','m','m','o','n','F','i','l','e','s','D','i','r',' ','(','x','8','6',')',0};
      static const WCHAR commonfilesW[] = {'C','o','m','m','o','n','P','r','o','g','r','a','m','F','i','l','e','s',0};
      static const WCHAR commonfiles86W[] = {'C','o','m','m','o','n','P','r','o','g','r','a','m','F','i','l','e','s','(','x','8','6',')',0};
      static const WCHAR commonw6432W[] = {'C','o','m','m','o','n','P','r','o','g','r','a','m','W','6','4','3','2',0};
      static const WCHAR winedlldirW[] = {'W','I','N','E','D','L','L','D','I','R','%','u',0};
      static const WCHAR winehomedirW[] = {'W','I','N','E','H','O','M','E','D','I','R',0};
      static const WCHAR winedatadirW[] = {'W','I','N','E','D','A','T','A','D','I','R',0};
      static const WCHAR winebuilddirW[] = {'W','I','N','E','B','U','I','L','D','D','I','R',0};
      static const WCHAR wineusernameW[] = {'W','I','N','E','U','S','E','R','N','A','M','E',0};
      static const WCHAR wineconfigdirW[] = {'W','I','N','E','C','O','N','F','I','G','D','I','R',0};
  
      WCHAR buf[256];
      UNICODE_STRING arch_strW = { sizeof(archW) - sizeof(WCHAR), sizeof(archW), archW };
      UNICODE_STRING arch6432_strW = { sizeof(arch6432W) - sizeof(WCHAR), sizeof(arch6432W), arch6432W };
      UNICODE_STRING valW = { 0, sizeof(buf), buf };
      OBJECT_ATTRIBUTES attr;
      UNICODE_STRING nameW;
      const char *p, *name;
      WCHAR *val;
      HANDLE hkey;
      DWORD i;
  
      /* set the Wine paths */
  
      set_wine_path_variable( env, winedatadirW, wine_get_data_dir() );
      set_wine_path_variable( env, winehomedirW, getenv("HOME") );
      set_wine_path_variable( env, winebuilddirW, wine_get_build_dir() );
      set_wine_path_variable( env, wineconfigdirW, wine_get_config_dir() );
      for (i = 0; (p = wine_dll_enum_load_path( i )); i++)
      {
          NTDLL_swprintf( buf, winedlldirW, i );
          set_wine_path_variable( env, buf, p );
      }
      NTDLL_swprintf( buf, winedlldirW, i );
      set_wine_path_variable( env, buf, NULL );
  
      /* set user name */
  
      name = wine_get_user_name();
      if ((p = strrchr( name, '/' ))) name = p + 1;
      if ((p = strrchr( name, '\\' ))) name = p + 1;
      ntdll_umbstowcs( name, strlen(name) + 1, buf, ARRAY_SIZE(buf) );
      set_env_var( env, wineusernameW, buf );
  
      /* set the PROCESSOR_ARCHITECTURE variable */
  
      if (!RtlQueryEnvironmentVariable_U( *env, &arch6432_strW, &valW ))
      {
          if (is_win64)
          {
              RtlSetEnvironmentVariable( env, &arch_strW, &valW );
              RtlSetEnvironmentVariable( env, &arch6432_strW, NULL );
          }
      }
      else if (!RtlQueryEnvironmentVariable_U( *env, &arch_strW, &valW ))
      {
          if (is_wow64)
          {
              RtlSetEnvironmentVariable( env, &arch6432_strW, &valW );
              RtlInitUnicodeString( &nameW, x86W );
              RtlSetEnvironmentVariable( env, &arch_strW, &nameW );
          }
      }
  
      InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
      RtlInitUnicodeString( &nameW, versionW );
      if (NtOpenKey( &hkey, KEY_READ | KEY_WOW64_64KEY, &attr )) return;
  
      /* set the ProgramFiles variables */
  
      if ((val = get_registry_value( *env, hkey, progdirW )))
      {
          if (is_win64 || is_wow64) set_env_var( env, progw6432W, val );
          if (is_win64 || !is_wow64) set_env_var( env, progfilesW, val );
          RtlFreeHeap( GetProcessHeap(), 0, val );
      }
      if ((val = get_registry_value( *env, hkey, progdir86W )))
      {
          if (is_win64 || is_wow64) set_env_var( env, progfiles86W, val );
          if (is_wow64) set_env_var( env, progfilesW, val );
          RtlFreeHeap( GetProcessHeap(), 0, val );
      }
  
      /* set the CommonProgramFiles variables */
  
      if ((val = get_registry_value( *env, hkey, commondirW )))
      {
          if (is_win64 || is_wow64) set_env_var( env, commonw6432W, val );
          if (is_win64 || !is_wow64) set_env_var( env, commonfilesW, val );
          RtlFreeHeap( GetProcessHeap(), 0, val );
      }
      if ((val = get_registry_value( *env, hkey, commondir86W )))
      {
          if (is_win64 || is_wow64) set_env_var( env, commonfiles86W, val );
          if (is_wow64) set_env_var( env, commonfilesW, val );
          RtlFreeHeap( GetProcessHeap(), 0, val );
      }
      NtClose( hkey );
  }
  
  
  /***********************************************************************
   *           build_initial_environment
   *
   * Build the Win32 environment from the Unix environment
   */
  static WCHAR *build_initial_environment( char **env )
  {
      SIZE_T size = 1;
      char **e;
      WCHAR *p, *ptr;
  
      /* compute the total size of the Unix environment */
  
      for (e = env; *e; e++)
      {
          if (is_special_env_var( *e )) continue;
          size += strlen(*e) + 1;
      }
  
      if (!(ptr = RtlAllocateHeap( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) return NULL;
      p = ptr;
  
      /* and fill it with the Unix environment */
  
      for (e = env; *e; e++)
      {
          char *str = *e;
  
          /* skip Unix special variables and use the Wine variants instead */
          if (!strncmp( str, "WINE", 4 ))
          {
              if (is_special_env_var( str + 4 )) str += 4;
              else if (!strncmp( str, "WINEPRELOADRESERVE=", 19 )) continue;  /* skip it */
          }
          else if (is_special_env_var( str )) continue;  /* skip it */
  
          ntdll_umbstowcs( str, strlen(str) + 1, p, size - (p - ptr) );
          p += wcslen(p) + 1;
      }
      *p = 0;
      first_prefix_start = set_registry_environment( &ptr, TRUE );
      set_additional_environment( &ptr );
      return ptr;
  }
  
  
  /***********************************************************************
   *           build_envp
   *
   * Build the environment of a new child process.
   */
  char **build_envp( const WCHAR *envW )
  {
      static const char * const unix_vars[] = { "PATH", "TEMP", "TMP", "HOME" };
      char **envp;
      char *env, *p;
      int count = 1, length, lenW;
      unsigned int i;
  
      lenW = get_env_length( envW );
      if (!(env = RtlAllocateHeap( GetProcessHeap(), 0, lenW * 3 ))) return NULL;
      length = ntdll_wcstoumbs( envW, lenW, env, lenW * 3, FALSE );
  
      for (p = env; *p; p += strlen(p) + 1, count++)
          if (is_special_env_var( p )) length += 4; /* prefix it with "WINE" */
  
      for (i = 0; i < ARRAY_SIZE( unix_vars ); i++)
      {
          if (!(p = getenv(unix_vars[i]))) continue;
          length += strlen(unix_vars[i]) + strlen(p) + 2;
          count++;
      }
  
      if ((envp = RtlAllocateHeap( GetProcessHeap(), 0, count * sizeof(*envp) + length )))
      {
          char **envptr = envp;
          char *dst = (char *)(envp + count);
  
          /* some variables must not be modified, so we get them directly from the unix env */
          for (i = 0; i < ARRAY_SIZE( unix_vars ); i++)
          {
              if (!(p = getenv( unix_vars[i] ))) continue;
              *envptr++ = strcpy( dst, unix_vars[i] );
              strcat( dst, "=" );
              strcat( dst, p );
              dst += strlen(dst) + 1;
          }
  
          /* now put the Windows environment strings */
          for (p = env; *p; p += strlen(p) + 1)
          {
              if (*p == '=') continue;  /* skip drive curdirs, this crashes some unix apps */
              if (!strncmp( p, "WINEPRELOADRESERVE=", sizeof("WINEPRELOADRESERVE=")-1 )) continue;
              if (!strncmp( p, "WINELOADERNOEXEC=", sizeof("WINELOADERNOEXEC=")-1 )) continue;
              if (!strncmp( p, "WINESERVERSOCKET=", sizeof("WINESERVERSOCKET=")-1 )) continue;
              if (is_special_env_var( p ))  /* prefix it with "WINE" */
              {
                  *envptr++ = strcpy( dst, "WINE" );
                  strcat( dst, p );
              }
              else
              {
                  *envptr++ = strcpy( dst, p );
              }
              dst += strlen(dst) + 1;
          }
          *envptr = 0;
      }
      RtlFreeHeap( GetProcessHeap(), 0, env );
      return envp;
  }
  
  
  /***********************************************************************
   *           get_current_directory
   *
   * Initialize the current directory from the Unix cwd.
   */
  static void get_current_directory( UNICODE_STRING *dir )
  {
      const char *pwd;
      char *cwd;
      int size;
  
      dir->Length = 0;
  
      /* try to get it from the Unix cwd */
  
      for (size = 1024; ; size *= 2)
      {
          if (!(cwd = RtlAllocateHeap( GetProcessHeap(), 0, size ))) break;
          if (getcwd( cwd, size )) break;
          RtlFreeHeap( GetProcessHeap(), 0, cwd );
          if (errno == ERANGE) continue;
          cwd = NULL;
          break;
      }
  
      /* try to use PWD if it is valid, so that we don't resolve symlinks */
  
      pwd = getenv( "PWD" );
      if (cwd)
      {
          struct stat st1, st2;
  
          if (!pwd || stat( pwd, &st1 ) == -1 ||
              (!stat( cwd, &st2 ) && (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)))
              pwd = cwd;
      }
  
      if (pwd)
      {
          ANSI_STRING unix_name;
          UNICODE_STRING nt_name;
  
          RtlInitAnsiString( &unix_name, pwd );
          if (!wine_unix_to_nt_file_name( &unix_name, &nt_name ))
          {
              /* skip the \??\ prefix */
              if (nt_name.Length > 6 * sizeof(WCHAR) && nt_name.Buffer[5] == ':')
              {
                  dir->Length = nt_name.Length - 4 * sizeof(WCHAR);
                  memcpy( dir->Buffer, nt_name.Buffer + 4, dir->Length );
              }
              else  /* change \??\ to \\?\ */
              {
                  dir->Length = nt_name.Length;
                  memcpy( dir->Buffer, nt_name.Buffer, dir->Length );
                  dir->Buffer[1] = '\\';
              }
              RtlFreeUnicodeString( &nt_name );
          }
      }
  
      if (!dir->Length)  /* still not initialized */
      {
          MESSAGE("Warning: could not find DOS drive for current working directory '%s', "
                  "starting in the Windows directory.\n", cwd ? cwd : "" );
          dir->Length = wcslen( windows_dir ) * sizeof(WCHAR);
          memcpy( dir->Buffer, windows_dir, dir->Length );
      }
      RtlFreeHeap( GetProcessHeap(), 0, cwd );
  
      /* add trailing backslash */
      if (dir->Buffer[dir->Length / sizeof(WCHAR) - 1] != '\\')
      {
          dir->Buffer[dir->Length / sizeof(WCHAR)] = '\\';
          dir->Length += sizeof(WCHAR);
      }
      dir->Buffer[dir->Length / sizeof(WCHAR)] = 0;
  }
  
  
  /***********************************************************************
   *           is_path_prefix
   */
  static inline BOOL is_path_prefix( const WCHAR *prefix, const WCHAR *path, const WCHAR *file )
  {
      DWORD len = wcslen( prefix );
  
      if (wcsnicmp( path, prefix, len )) return FALSE;
      while (path[len] == '\\') len++;
      return path + len == file;
  }
  
  
  /***********************************************************************
   *           get_image_path
   */
  static void get_image_path( const char *argv0, UNICODE_STRING *path )
  {
      static const WCHAR exeW[] = {'.','e','x','e',0};
      WCHAR *load_path, *file_part, *name, full_name[MAX_PATH];
      DWORD len = strlen(argv0) + 1;
  
      if (!(name = RtlAllocateHeap( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) goto failed;
      ntdll_umbstowcs( argv0, len, name, len );
  
      if (RtlDetermineDosPathNameType_U( name ) != RELATIVE_PATH ||
          wcschr( name, '/' ) || wcschr( name, '\\' ))
      {
          len = RtlGetFullPathName_U( name, sizeof(full_name), full_name, &file_part );
          if (!len || len > sizeof(full_name)) goto failed;
          /* try first without extension */
          if (RtlDoesFileExists_U( full_name )) goto done;
          if (len < (MAX_PATH - 4) * sizeof(WCHAR) && !wcschr( file_part, '.' ))
          {
              wcscat( file_part, exeW );
              if (RtlDoesFileExists_U( full_name )) goto done;
          }
          /* check for builtin path inside system directory */
          if (!is_path_prefix( system_dir, full_name, file_part ))
          {
              if (!is_win64 && !is_wow64) goto failed;
              if (!is_path_prefix( syswow64_dir, full_name, file_part )) goto failed;
          }
      }
      else
      {
          RtlGetExePath( name, &load_path );
          len = RtlDosSearchPath_U( load_path, name, exeW, sizeof(full_name), full_name, &file_part );
          RtlReleasePath( load_path );
          if (!len || len > sizeof(full_name))
          {
              /* build builtin path inside system directory */
              len = wcslen( system_dir );
              if (wcslen( name ) >= MAX_PATH - 4 - len) goto failed;
              wcscpy( full_name, system_dir );
              wcscat( full_name, name );
              if (!wcschr( name, '.' )) wcscat( full_name, exeW );
          }
      }
  done:
      RtlCreateUnicodeString( path, full_name );
      RtlFreeHeap( GetProcessHeap(), 0, name );
      return;
  
  failed:
      MESSAGE( "wine: cannot find '%s'\n", argv0 );
      RtlExitUserProcess( GetLastError() );
  }
  
  
  /***********************************************************************
   *              set_library_wargv
   *
   * Set the Wine library Unicode argv global variables.
   */
  static void set_library_wargv( char **argv, const UNICODE_STRING *image )
  {
      int argc;
      WCHAR *p, **wargv;
      DWORD total = 0;
  
      if (image) total += 1 + image->Length / sizeof(WCHAR);
      for (argc = (image != NULL); argv[argc]; argc++) total += strlen(argv[argc]) + 1;
  
      wargv = RtlAllocateHeap( GetProcessHeap(), 0,
                               total * sizeof(WCHAR) + (argc + 1) * sizeof(*wargv) );
      p = (WCHAR *)(wargv + argc + 1);
      if (image)
      {
          wcscpy( p, image->Buffer );
          wargv[0] = p;
          p += 1 + image->Length / sizeof(WCHAR);
          total -= 1 + image->Length / sizeof(WCHAR);
      }
      for (argc = (image != NULL); argv[argc]; argc++)
      {
          DWORD reslen = ntdll_umbstowcs( argv[argc], strlen(argv[argc]) + 1, p, total );
          wargv[argc] = p;
          p += reslen;
          total -= reslen;
      }
      wargv[argc] = NULL;
  
      __wine_main_argc = argc;
      __wine_main_wargv = wargv;
  }
  
  
  /***********************************************************************
   *           build_command_line
   *
   * Build the command line of a process from the argv array.
   *
   * Note that it does NOT necessarily include the file name.
   * Sometimes we don't even have any command line options at all.
   *
   * We must quote and escape characters so that the argv array can be rebuilt
   * from the command line:
   * - spaces and tabs must be quoted
   *   'a b'   -> '"a b"'
   * - quotes must be escaped
   *   '"'     -> '\"'
   * - if '\'s are followed by a '"', they must be doubled and followed by '\"',
   *   resulting in an odd number of '\' followed by a '"'
   *   '\"'    -> '\\\"'
   *   '\\"'   -> '\\\\\"'
   * - '\'s are followed by the closing '"' must be doubled,
   *   resulting in an even number of '\' followed by a '"'
   *   ' \'    -> '" \\"'
   *   ' \\'    -> '" \\\\"'
   * - '\'s that are not followed by a '"' can be left as is
   *   'a\b'   == 'a\b'
   *   'a\\b'  == 'a\\b'
   */
  static void build_command_line( WCHAR **argv, UNICODE_STRING *cmdline )
  {
      int len;
      WCHAR **arg;
      LPWSTR p;
  
      len = 1;
      for (arg = argv; *arg; arg++) len += 3 + 2 * wcslen( *arg );
      cmdline->MaximumLength = len * sizeof(WCHAR);
      if (!(cmdline->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, cmdline->MaximumLength ))) return;
  
      p = cmdline->Buffer;
      for (arg = argv; *arg; arg++)
      {
          BOOL has_space, has_quote;
          int i, bcount;
          WCHAR *a;
  
          /* check for quotes and spaces in this argument */
          if (arg == argv || !**arg) has_space = TRUE;
          else has_space = wcschr( *arg, ' ' ) || wcschr( *arg, '\t' );
          has_quote = wcschr( *arg, '"' ) != NULL;
  
          /* now transfer it to the command line */
          if (has_space) *p++ = '"';
          if (has_quote || has_space)
          {
              bcount = 0;
              for (a = *arg; *a; a++)
              {
                  if (*a == '\\') bcount++;
                  else
                  {
                      if (*a == '"') /* double all the '\\' preceding this '"', plus one */
                          for (i = 0; i <= bcount; i++) *p++ = '\\';
                      bcount = 0;
                  }
                  *p++ = *a;
              }
          }
          else
          {
              wcscpy( p, *arg );
              p += wcslen( p );
          }
          if (has_space)
          {
              /* Double all the '\' preceding the closing quote */
              for (i = 0; i < bcount; i++) *p++ = '\\';
              *p++ = '"';
          }
          *p++ = ' ';
      }
      if (p > cmdline->Buffer) p--;  /* remove last space */
      *p = 0;
      cmdline->Length = (p - cmdline->Buffer) * sizeof(WCHAR);
  }
  
  
  /******************************************************************************
   *  NtQuerySystemEnvironmentValue		[NTDLL.@]
   */
  NTSYSAPI NTSTATUS WINAPI NtQuerySystemEnvironmentValue(PUNICODE_STRING VariableName,
                                                         PWCHAR Value,
                                                         ULONG ValueBufferLength,
                                                         PULONG RequiredLength)
  {
      FIXME("(%s, %p, %u, %p), stub\n", debugstr_us(VariableName), Value, ValueBufferLength, RequiredLength);
      return STATUS_NOT_IMPLEMENTED;
  }
  
  /******************************************************************************
   *  NtQuerySystemEnvironmentValueEx		[NTDLL.@]
   */
  NTSYSAPI NTSTATUS WINAPI NtQuerySystemEnvironmentValueEx(PUNICODE_STRING name, LPGUID vendor,
                                                           PVOID value, PULONG retlength, PULONG attrib)
  {
      FIXME("(%s, %s, %p, %p, %p), stub\n", debugstr_us(name), debugstr_guid(vendor), value, retlength, attrib);
      return STATUS_NOT_IMPLEMENTED;
  }
  
  /******************************************************************************
   *  RtlCreateEnvironment		[NTDLL.@]
   */
  NTSTATUS WINAPI RtlCreateEnvironment(BOOLEAN inherit, PWSTR* env)
  {
      SIZE_T size;
  
      TRACE("(%u,%p)!\n", inherit, env);
  
      if (inherit)
      {
          RtlAcquirePebLock();
          size = get_env_length( NtCurrentTeb()->Peb->ProcessParameters->Environment ) * sizeof(WCHAR);
          if ((*env = RtlAllocateHeap( GetProcessHeap(), 0, size )))
              memcpy( *env, NtCurrentTeb()->Peb->ProcessParameters->Environment, size );
          RtlReleasePebLock();
      }
      else *env = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WCHAR) );
  
      return *env ? STATUS_SUCCESS : STATUS_NO_MEMORY;
  }
  
  /******************************************************************************
   *  RtlDestroyEnvironment		[NTDLL.@]
   */
  NTSTATUS WINAPI RtlDestroyEnvironment(PWSTR env) 
  {
      RtlFreeHeap( GetProcessHeap(), 0, env );
      return STATUS_SUCCESS;
  }
  
  static LPCWSTR ENV_FindVariable(PCWSTR var, PCWSTR name, unsigned namelen)
  {
      while (*var)
      {
          /* match var names, but avoid setting a var with a name including a '='
           * (a starting '=' is valid though)
           */
          unsigned int len = wcslen( var );
          if (len > namelen &&
              var[namelen] == '=' &&
              !RtlCompareUnicodeStrings( var, namelen, name, namelen, TRUE ) &&
              wcschr(var + 1, '=') == var + namelen)
          {
              return var + namelen + 1;
          }
          var += len + 1;
      }
      return NULL;
  }
  
  /******************************************************************
   *		RtlQueryEnvironmentVariable_U   [NTDLL.@]
   *
   * NOTES: when the buffer is too small, the string is not written, but if the
   *      terminating null char is the only char that cannot be written, then
   *      all chars (except the null) are written and success is returned
   *      (behavior of Win2k at least)
   */
  NTSTATUS WINAPI RtlQueryEnvironmentVariable_U(PWSTR env,
                                                PUNICODE_STRING name,
                                                PUNICODE_STRING value)
  {
      NTSTATUS    nts = STATUS_VARIABLE_NOT_FOUND;
      PCWSTR      var;
      unsigned    namelen;
  
      TRACE("%p %s %p\n", env, debugstr_us(name), value);
  
      value->Length = 0;
      namelen = name->Length / sizeof(WCHAR);
      if (!namelen) return nts;
  
      if (!env)
      {
          RtlAcquirePebLock();
          var = NtCurrentTeb()->Peb->ProcessParameters->Environment;
      }
      else var = env;
  
      var = ENV_FindVariable(var, name->Buffer, namelen);
      if (var != NULL)
      {
          value->Length = wcslen(var) * sizeof(WCHAR);
  
          if (value->Length <= value->MaximumLength)
          {
              memmove(value->Buffer, var, min(value->Length + sizeof(WCHAR), value->MaximumLength));
              nts = STATUS_SUCCESS;
          }
          else nts = STATUS_BUFFER_TOO_SMALL;
      }
  
      if (!env) RtlReleasePebLock();
  
      return nts;
  }
  
  /******************************************************************
   *		RtlSetCurrentEnvironment        [NTDLL.@]
   *
   */
  void WINAPI RtlSetCurrentEnvironment(PWSTR new_env, PWSTR* old_env)
  {
      TRACE("(%p %p)\n", new_env, old_env);
  
      RtlAcquirePebLock();
  
      if (old_env) *old_env = NtCurrentTeb()->Peb->ProcessParameters->Environment;
      NtCurrentTeb()->Peb->ProcessParameters->Environment = new_env;
  
      RtlReleasePebLock();
  }
  
  
  /******************************************************************************
   *  RtlSetEnvironmentVariable		[NTDLL.@]
   */
  NTSTATUS WINAPI RtlSetEnvironmentVariable(PWSTR* penv, PUNICODE_STRING name, 
                                            PUNICODE_STRING value)
  {
      INT varlen, len, old_size;
      LPWSTR      p, env;
      NTSTATUS    nts = STATUS_VARIABLE_NOT_FOUND;
  
      TRACE("(%p, %s, %s)\n", penv, debugstr_us(name), debugstr_us(value));
  
      if (!name || !name->Buffer || !name->Length)
          return STATUS_INVALID_PARAMETER_1;
  
      len = name->Length / sizeof(WCHAR);
  
      /* variable names can't contain a '=' except as a first character */
      for (p = name->Buffer + 1; p < name->Buffer + len; p++)
          if (*p == '=') return STATUS_INVALID_PARAMETER;
  
      if (!penv)
      {
          RtlAcquirePebLock();
          env = NtCurrentTeb()->Peb->ProcessParameters->Environment;
      } else env = *penv;
  
      old_size = get_env_length( env );
  
      /* Find a place to insert the string */
      for (p = env; *p; p += varlen + 1)
      {
          varlen = wcslen(p);
          if (varlen > len && p[len] == '=' &&
              !RtlCompareUnicodeStrings( name->Buffer, len, p, len, TRUE )) break;
      }
      if (!value && !*p) goto done;  /* Value to remove doesn't exist */
  
      /* Realloc the buffer */
      len = value ? len + value->Length / sizeof(WCHAR) + 2 : 0;
      if (*p) len -= wcslen(p) + 1;  /* The name already exists */
  
      if (len < 0)
      {
          LPWSTR next = p + wcslen(p) + 1;  /* We know there is a next one */
          memmove(next + len, next, (old_size - (next - env)) * sizeof(WCHAR));
      }
  
      if ((old_size + len) * sizeof(WCHAR) > RtlSizeHeap( GetProcessHeap(), 0, env ))
      {
          SIZE_T new_size = max( old_size * 2, old_size + len ) * sizeof(WCHAR);
          LPWSTR new_env = RtlAllocateHeap( GetProcessHeap(), 0, new_size );
  
          if (!new_env)
          {
              nts = STATUS_NO_MEMORY;
              goto done;
          }
          memmove(new_env, env, (p - env) * sizeof(WCHAR));
          assert(len > 0);
          memmove(new_env + (p - env) + len, p, (old_size - (p - env)) * sizeof(WCHAR));
          p = new_env + (p - env);
  
          RtlDestroyEnvironment(env);
          if (!penv) NtCurrentTeb()->Peb->ProcessParameters->Environment = new_env;
          else *penv = new_env;
      }
      else
      {
          if (len > 0) memmove(p + len, p, (old_size - (p - env)) * sizeof(WCHAR));
      }
  
      /* Set the new string */
      if (value)
      {
          memcpy( p, name->Buffer, name->Length );
          p += name->Length / sizeof(WCHAR);
          *p++ = '=';
          memcpy( p, value->Buffer, value->Length );
          p[value->Length / sizeof(WCHAR)] = 0;
      }
      nts = STATUS_SUCCESS;
  
  done:
      if (!penv) RtlReleasePebLock();
  
      return nts;
  }
  
  /******************************************************************************
   *		RtlExpandEnvironmentStrings (NTDLL.@)
   */
  NTSTATUS WINAPI RtlExpandEnvironmentStrings( const WCHAR *renv, WCHAR *src, SIZE_T src_len,
                                               WCHAR *dst, SIZE_T count, SIZE_T *plen )
  {
      SIZE_T len, total_size = 1;  /* 1 for terminating '\0' */
      LPCWSTR env, var;
  
      if (!renv)
      {
          RtlAcquirePebLock();
          env = NtCurrentTeb()->Peb->ProcessParameters->Environment;
      }
      else env = renv;
  
      while (src_len)
      {
          if (*src != '%')
          {
              for (len = 0; len < src_len; len++) if (src[len] == '%') break;
              var = src;
              src += len;
              src_len -= len;
          }
          else  /* we are at the start of a variable */
          {
              for (len = 1; len < src_len; len++) if (src[len] == '%') break;
              if (len < src_len)
              {
                  if ((var = ENV_FindVariable( env, src + 1, len - 1 )))
                  {
                      src += len + 1;  /* Skip the variable name */
                      src_len -= len + 1;
                      len = wcslen(var);
                  }
                  else
                  {
                      var = src;  /* Copy original name instead */
                      len++;
                      src += len;
                      src_len -= len;
                  }
              }
              else  /* unfinished variable name, ignore it */
              {
                  var = src;
                  src += len;
                  src_len = 0;
              }
          }
          total_size += len;
          if (dst)
          {
              if (count < len) len = count;
              memcpy(dst, var, len * sizeof(WCHAR));
              count -= len;
              dst += len;
          }
      }
  
      if (!renv) RtlReleasePebLock();
  
      if (dst && count) *dst = '\0';
      if (plen) *plen = total_size;
  
      return (count) ? STATUS_SUCCESS : STATUS_BUFFER_TOO_SMALL;
  }
  
  /******************************************************************
   *		RtlExpandEnvironmentStrings_U (NTDLL.@)
   */
  NTSTATUS WINAPI RtlExpandEnvironmentStrings_U( const WCHAR *env, const UNICODE_STRING *src,
                                                 UNICODE_STRING *dst, ULONG *plen )
  {
      SIZE_T len;
      NTSTATUS ret;
  
      ret = RtlExpandEnvironmentStrings( env, src->Buffer, src->Length / sizeof(WCHAR),
                                         dst->Buffer, dst->MaximumLength / sizeof(WCHAR), &len );
      if (plen) *plen = len * sizeof(WCHAR);  /* FIXME: check for overflow? */
      if (len > UNICODE_STRING_MAX_CHARS) ret = STATUS_BUFFER_TOO_SMALL;
      if (!ret) dst->Length = (len - 1) * sizeof(WCHAR);
      return ret;
  }
  
  static inline void normalize( void *base, WCHAR **ptr )
  {
      if (*ptr) *ptr = (WCHAR *)((char *)base + (UINT_PTR)*ptr);
  }
  
  /******************************************************************************
   *  RtlNormalizeProcessParams  [NTDLL.@]
   */
  PRTL_USER_PROCESS_PARAMETERS WINAPI RtlNormalizeProcessParams( RTL_USER_PROCESS_PARAMETERS *params )
  {
      if (params && !(params->Flags & PROCESS_PARAMS_FLAG_NORMALIZED))
      {
          normalize( params, &params->CurrentDirectory.DosPath.Buffer );
          normalize( params, &params->DllPath.Buffer );
          normalize( params, &params->ImagePathName.Buffer );
          normalize( params, &params->CommandLine.Buffer );
          normalize( params, &params->WindowTitle.Buffer );
          normalize( params, &params->Desktop.Buffer );
          normalize( params, &params->ShellInfo.Buffer );
          normalize( params, &params->RuntimeInfo.Buffer );
          params->Flags |= PROCESS_PARAMS_FLAG_NORMALIZED;
      }
      return params;
  }
  
  
  static inline void denormalize( const void *base, WCHAR **ptr )
  {
      if (*ptr) *ptr = (WCHAR *)(UINT_PTR)((char *)*ptr - (const char *)base);
  }
  
  /******************************************************************************
   *  RtlDeNormalizeProcessParams  [NTDLL.@]
   */
  PRTL_USER_PROCESS_PARAMETERS WINAPI RtlDeNormalizeProcessParams( RTL_USER_PROCESS_PARAMETERS *params )
  {
      if (params && (params->Flags & PROCESS_PARAMS_FLAG_NORMALIZED))
      {
          denormalize( params, &params->CurrentDirectory.DosPath.Buffer );
          denormalize( params, &params->DllPath.Buffer );
          denormalize( params, &params->ImagePathName.Buffer );
          denormalize( params, &params->CommandLine.Buffer );
          denormalize( params, &params->WindowTitle.Buffer );
          denormalize( params, &params->Desktop.Buffer );
          denormalize( params, &params->ShellInfo.Buffer );
          denormalize( params, &params->RuntimeInfo.Buffer );
          params->Flags &= ~PROCESS_PARAMS_FLAG_NORMALIZED;
      }
      return params;
  }
  
  
  #define ROUND_SIZE(size) (((size) + sizeof(void *) - 1) & ~(sizeof(void *) - 1))
  
  /* append a unicode string to the process params data; helper for RtlCreateProcessParameters */
  static void append_unicode_string( void **data, const UNICODE_STRING *src,
                                     UNICODE_STRING *dst )
  {
      dst->Length = src->Length;
      dst->MaximumLength = src->MaximumLength;
      if (dst->MaximumLength)
      {
          dst->Buffer = *data;
          memcpy( dst->Buffer, src->Buffer, dst->Length );
          *data = (char *)dst->Buffer + ROUND_SIZE( dst->MaximumLength );
      }
      else dst->Buffer = NULL;
  }
  
  
  /******************************************************************************
   *  RtlCreateProcessParametersEx  [NTDLL.@]
   */
  NTSTATUS WINAPI RtlCreateProcessParametersEx( RTL_USER_PROCESS_PARAMETERS **result,
                                                const UNICODE_STRING *ImagePathName,
                                                const UNICODE_STRING *DllPath,
                                                const UNICODE_STRING *CurrentDirectoryName,
                                                const UNICODE_STRING *CommandLine,
                                                PWSTR Environment,
                                                const UNICODE_STRING *WindowTitle,
                                                const UNICODE_STRING *Desktop,
                                                const UNICODE_STRING *ShellInfo,
                                                const UNICODE_STRING *RuntimeInfo,
                                                ULONG flags )
  {
      UNICODE_STRING curdir;
      const RTL_USER_PROCESS_PARAMETERS *cur_params;
      SIZE_T size, env_size = 0;
      void *ptr;
      NTSTATUS status = STATUS_SUCCESS;
  
      RtlAcquirePebLock();
      cur_params = NtCurrentTeb()->Peb->ProcessParameters;
      if (!DllPath) DllPath = &cur_params->DllPath;
      if (!CurrentDirectoryName)
      {
          if (NtCurrentTeb()->Tib.SubSystemTib)  /* FIXME: hack */
              curdir = ((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
          else
              curdir = cur_params->CurrentDirectory.DosPath;
      }
      else curdir = *CurrentDirectoryName;
      curdir.MaximumLength = MAX_PATH * sizeof(WCHAR);
  
      if (!CommandLine) CommandLine = ImagePathName;
      if (!Environment && cur_params) Environment = cur_params->Environment;
      if (!WindowTitle) WindowTitle = &empty_str;
      if (!Desktop) Desktop = &empty_str;
      if (!ShellInfo) ShellInfo = &empty_str;
      if (!RuntimeInfo) RuntimeInfo = &null_str;
  
      if (Environment) env_size = get_env_length( Environment ) * sizeof(WCHAR);
  
      size = (sizeof(RTL_USER_PROCESS_PARAMETERS)
              + ROUND_SIZE( ImagePathName->MaximumLength )
              + ROUND_SIZE( DllPath->MaximumLength )
              + ROUND_SIZE( curdir.MaximumLength )
              + ROUND_SIZE( CommandLine->MaximumLength )
              + ROUND_SIZE( WindowTitle->MaximumLength )
              + ROUND_SIZE( Desktop->MaximumLength )
              + ROUND_SIZE( ShellInfo->MaximumLength )
              + ROUND_SIZE( RuntimeInfo->MaximumLength ));
  
      if ((ptr = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, size + ROUND_SIZE(env_size) )))
      {
          RTL_USER_PROCESS_PARAMETERS *params = ptr;
          params->AllocationSize = size;
          params->Size           = size;
          params->Flags          = PROCESS_PARAMS_FLAG_NORMALIZED;
          if (cur_params) params->ConsoleFlags = cur_params->ConsoleFlags;
          /* all other fields are zero */
  
          ptr = params + 1;
          append_unicode_string( &ptr, &curdir, &params->CurrentDirectory.DosPath );
          append_unicode_string( &ptr, DllPath, &params->DllPath );
          append_unicode_string( &ptr, ImagePathName, &params->ImagePathName );
          append_unicode_string( &ptr, CommandLine, &params->CommandLine );
          append_unicode_string( &ptr, WindowTitle, &params->WindowTitle );
          append_unicode_string( &ptr, Desktop, &params->Desktop );
          append_unicode_string( &ptr, ShellInfo, &params->ShellInfo );
          append_unicode_string( &ptr, RuntimeInfo, &params->RuntimeInfo );
          if (Environment) params->Environment = memcpy( ptr, Environment, env_size );
          *result = params;
          if (!(flags & PROCESS_PARAMS_FLAG_NORMALIZED)) RtlDeNormalizeProcessParams( params );
      }
      else status = STATUS_NO_MEMORY;
  
      RtlReleasePebLock();
      return status;
  }
  
  
  /******************************************************************************
   *  RtlCreateProcessParameters  [NTDLL.@]
   */
  NTSTATUS WINAPI RtlCreateProcessParameters( RTL_USER_PROCESS_PARAMETERS **result,
                                              const UNICODE_STRING *image,
                                              const UNICODE_STRING *dllpath,
                                              const UNICODE_STRING *curdir,
                                              const UNICODE_STRING *cmdline,
                                              PWSTR env,
                                              const UNICODE_STRING *title,
                                              const UNICODE_STRING *desktop,
                                              const UNICODE_STRING *shellinfo,
                                              const UNICODE_STRING *runtime )
  {
      return RtlCreateProcessParametersEx( result, image, dllpath, curdir, cmdline,
                                           env, title, desktop, shellinfo, runtime, 0 );
  }
  
  
  /******************************************************************************
   *  RtlDestroyProcessParameters  [NTDLL.@]
   */
  void WINAPI RtlDestroyProcessParameters( RTL_USER_PROCESS_PARAMETERS *params )
  {
      RtlFreeHeap( GetProcessHeap(), 0, params );
  }
  
  
  static inline void get_unicode_string( UNICODE_STRING *str, WCHAR **src, UINT len )
  {
      str->Buffer = *src;
      str->Length = len;
      str->MaximumLength = len + sizeof(WCHAR);
      *src += len / sizeof(WCHAR);
  }
  
  
  /***********************************************************************
   *           run_wineboot
   */
  static void run_wineboot( WCHAR **env )
  {
      static const WCHAR wineboot_eventW[] = {'\\','K','e','r','n','e','l','O','b','j','e','c','t','s',
                                              '\\','_','_','w','i','n','e','b','o','o','t','_','e','v','e','n','t',0};
      static const WCHAR wineboot[] = {'\\','?','?','\\','C',':','\\','w','i','n','d','o','w','s','\\',
                                       's','y','s','t','e','m','3','2','\\',
                                       'w','i','n','e','b','o','o','t','.','e','x','e',0};
      static const WCHAR cmdline[] = {'C',':','\\','w','i','n','d','o','w','s','\\',
                                      's','y','s','t','e','m','3','2','\\',
                                      'w','i','n','e','b','o','o','t','.','e','x','e',' ',
                                      '-','-','i','n','i','t',0};
      UNICODE_STRING nameW, cmdlineW, dllpathW;
      RTL_USER_PROCESS_PARAMETERS *params;
      RTL_USER_PROCESS_INFORMATION info;
      WCHAR *load_path, *dummy;
      OBJECT_ATTRIBUTES attr;
      LARGE_INTEGER timeout;
      HANDLE handles[2];
      NTSTATUS status;
      ULONG redir = 0;
      int count = 1;
  
      RtlInitUnicodeString( &nameW, wineboot_eventW );
      InitializeObjectAttributes( &attr, &nameW, OBJ_OPENIF, 0, NULL );
  
      status = NtCreateEvent( &handles[0], EVENT_ALL_ACCESS, &attr, NotificationEvent, 0 );
      if (status == STATUS_OBJECT_NAME_EXISTS) goto wait;
      if (status)
      {
          ERR( "failed to create wineboot event, expect trouble\n" );
          return;
      }
      LdrGetDllPath( wineboot + 4, LOAD_WITH_ALTERED_SEARCH_PATH, &load_path, &dummy );
      RtlInitUnicodeString( &nameW, wineboot + 4 );
      RtlInitUnicodeString( &dllpathW, load_path );
      RtlInitUnicodeString( &cmdlineW, cmdline );
      RtlCreateProcessParametersEx( &params, &nameW, &dllpathW, NULL, &cmdlineW, *env, NULL, NULL,
                                    NULL, NULL, PROCESS_PARAMS_FLAG_NORMALIZED );
      params->hStdInput  = 0;
      params->hStdOutput = 0;
      params->hStdError  = NtCurrentTeb()->Peb->ProcessParameters->hStdError;
  
      RtlInitUnicodeString( &nameW, wineboot );
      RtlWow64EnableFsRedirectionEx( TRUE, &redir );
      status = RtlCreateUserProcess( &nameW, OBJ_CASE_INSENSITIVE, params,
                                     NULL, NULL, 0, FALSE, 0, 0, &info );
      RtlWow64EnableFsRedirection( !redir );
      RtlReleasePath( load_path );
      RtlDestroyProcessParameters( params );
      if (status)
      {
          ERR( "failed to start wineboot %x\n", status );
          NtClose( handles[0] );
          return;
      }
      NtResumeThread( info.Thread, NULL );
      NtClose( info.Thread );
      handles[count++] = info.Process;
  
  wait:
      timeout.QuadPart = (ULONGLONG)(first_prefix_start ? 5 : 2) * 60 * 1000 * -10000;
      if (NtWaitForMultipleObjects( count, handles, TRUE, FALSE, &timeout ) == WAIT_TIMEOUT)
          ERR( "boot event wait timed out\n" );
      while (count) NtClose( handles[--count] );
  
      /* reload environment now that wineboot has run */
      set_registry_environment( env, first_prefix_start );
      set_additional_environment( env );
  }
  
  
  /***********************************************************************
   *           init_user_process_params
   *
   * Fill the initial RTL_USER_PROCESS_PARAMETERS structure from the server.
   */
  void init_user_process_params( SIZE_T data_size )
  {
      WCHAR *src, *load_path, *dummy;
      SIZE_T info_size, env_size;
      NTSTATUS status;
      startup_info_t *info = NULL;
      RTL_USER_PROCESS_PARAMETERS *params = NULL;
      UNICODE_STRING curdir, dllpath, imagepath, cmdline, title, desktop, shellinfo, runtime;
  
      if (!data_size)
      {
          RTL_USER_PROCESS_PARAMETERS initial_params = {0};
          WCHAR *env, curdir_buffer[MAX_PATH];
  
          NtCurrentTeb()->Peb->ProcessParameters = &initial_params;
          initial_params.Environment = build_initial_environment( __wine_get_main_environment() );
          curdir.Buffer = curdir_buffer;
          curdir.MaximumLength = sizeof(curdir_buffer);
          get_current_directory( &curdir );
          initial_params.CurrentDirectory.DosPath = curdir;
          get_image_path( __wine_main_argv[0], &initial_params.ImagePathName );
          set_library_wargv( __wine_main_argv, &initial_params.ImagePathName );
          build_command_line( __wine_main_wargv, &cmdline );
          LdrGetDllPath( initial_params.ImagePathName.Buffer, 0, &load_path, &dummy );
          RtlInitUnicodeString( &dllpath, load_path );
  
          env = initial_params.Environment;
          initial_params.Environment = NULL;  /* avoid copying it */
          if (RtlCreateProcessParametersEx( &params, &initial_params.ImagePathName, &dllpath, &curdir,
                                            &cmdline, NULL, &initial_params.ImagePathName, NULL, NULL, NULL,
                                            PROCESS_PARAMS_FLAG_NORMALIZED ))
              return;
  
          params->Environment = env;
          NtCurrentTeb()->Peb->ProcessParameters = params;
          RtlFreeUnicodeString( &initial_params.ImagePathName );
          RtlFreeUnicodeString( &cmdline );
          RtlReleasePath( load_path );
  
          if (isatty(0) || isatty(1) || isatty(2))
              params->ConsoleHandle = (HANDLE)2; /* see kernel32/kernel_private.h */
          if (!isatty(0))
              wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params->hStdInput );
          if (!isatty(1))
              wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params->hStdOutput );
          if (!isatty(2))
              wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params->hStdError );
          params->wShowWindow = 1; /* SW_SHOWNORMAL */
  
          run_wineboot( &params->Environment );
          goto done;
      }
  
      if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, data_size ))) return;
  
      SERVER_START_REQ( get_startup_info )
      {
          wine_server_set_reply( req, info, data_size );
          if (!(status = wine_server_call( req )))
          {
              data_size = wine_server_reply_size( reply );
              info_size = reply->info_size;
              env_size  = data_size - info_size;
          }
      }
      SERVER_END_REQ;
      if (status) goto done;
  
      src = (WCHAR *)(info + 1);
      get_unicode_string( &curdir, &src, info->curdir_len );
      get_unicode_string( &dllpath, &src, info->dllpath_len );
      get_unicode_string( &imagepath, &src, info->imagepath_len );
      get_unicode_string( &cmdline, &src, info->cmdline_len );
      get_unicode_string( &title, &src, info->title_len );
      get_unicode_string( &desktop, &src, info->desktop_len );
      get_unicode_string( &shellinfo, &src, info->shellinfo_len );
      get_unicode_string( &runtime, &src, info->runtime_len );
  
      runtime.MaximumLength = runtime.Length;  /* runtime info isn't a real string */
  
      if (RtlCreateProcessParametersEx( &params, &imagepath, &dllpath, &curdir, &cmdline, NULL,
                                        &title, &desktop, &shellinfo, &runtime,
                                        PROCESS_PARAMS_FLAG_NORMALIZED ))
          goto done;
  
      NtCurrentTeb()->Peb->ProcessParameters = params;
      params->DebugFlags      = info->debug_flags;
      params->ConsoleHandle   = wine_server_ptr_handle( info->console );
      params->ConsoleFlags    = info->console_flags;
      params->hStdInput       = wine_server_ptr_handle( info->hstdin );
      params->hStdOutput      = wine_server_ptr_handle( info->hstdout );
      params->hStdError       = wine_server_ptr_handle( info->hstderr );
      params->dwX             = info->x;
      params->dwY             = info->y;
      params->dwXSize         = info->xsize;
      params->dwYSize         = info->ysize;
      params->dwXCountChars   = info->xchars;
      params->dwYCountChars   = info->ychars;
      params->dwFillAttribute = info->attribute;
      params->dwFlags         = info->flags;
      params->wShowWindow     = info->show;
  
      /* environment needs to be a separate memory block */
      if ((params->Environment = RtlAllocateHeap( GetProcessHeap(), 0, max( env_size, sizeof(WCHAR) ))))
      {
          if (env_size) memcpy( params->Environment, (char *)info + info_size, env_size );
          else params->Environment[0] = 0;
      }
  
      set_library_wargv( __wine_main_argv, NULL );
  
  done:
      RtlFreeHeap( GetProcessHeap(), 0, info );
      if (RtlSetCurrentDirectory_U( &params->CurrentDirectory.DosPath ))
      {
          MESSAGE("wine: could not open working directory %s, starting in the Windows directory.\n",
                  debugstr_w( params->CurrentDirectory.DosPath.Buffer ));
          RtlInitUnicodeString( &curdir, windows_dir );
          RtlSetCurrentDirectory_U( &curdir );
      }
      if (!params->CurrentDirectory.Handle) chdir("/"); /* avoid locking removable devices */
      set_wow64_environment( &params->Environment );
  }
  