newlib-cygwin/winsup/cygwin/wincap.cc

/* wincap.cc -- figure out on which OS we're running. Set the
		capability class to the appropriate values.

   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc.

This file is part of Cygwin.

This software is a copyrighted work licensed under the terms of the
Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
details. */

#include "winsup.h"

/* Minimal set of capabilities which is equivalent to NT4. */
static NO_COPY wincaps wincap_unknown = {
  chunksize:0,
  heapslop:0x0,
  is_server:false,
  has_security_descriptor_control:false,
  has_ip_helper_lib:false,
  has_broken_if_oper_status:false,
  has_physical_mem_access:true,
  has_process_io_counters:false,
  has_terminal_services:false,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:false,
  has_extended_priority_class:false,
  has_guid_volumes:false,
  has_disk_ex_ioctls:false,
  has_disabled_user_tos_setting:false,
  has_fileid_dirinfo:false,
  has_exclusiveaddruse:false,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:true,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:false,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_nt4 = {
  chunksize:0,
  heapslop:0x0,
  is_server:false,
  has_security_descriptor_control:false,
  has_ip_helper_lib:false,
  has_broken_if_oper_status:false,
  has_physical_mem_access:true,
  has_process_io_counters:false,
  has_terminal_services:false,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:false,
  has_extended_priority_class:false,
  has_guid_volumes:false,
  has_disk_ex_ioctls:false,
  has_disabled_user_tos_setting:false,
  has_fileid_dirinfo:false,
  has_exclusiveaddruse:false,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:true,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:false,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_nt4sp4 = {
  chunksize:0,
  heapslop:0x0,
  is_server:false,
  has_security_descriptor_control:false,
  has_ip_helper_lib:true,
  has_broken_if_oper_status:true,
  has_physical_mem_access:true,
  has_process_io_counters:false,
  has_terminal_services:false,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:false,
  has_extended_priority_class:false,
  has_guid_volumes:false,
  has_disk_ex_ioctls:false,
  has_disabled_user_tos_setting:false,
  has_fileid_dirinfo:false,
  has_exclusiveaddruse:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:true,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:false,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_2000 = {
  chunksize:0,
  heapslop:0x0,
  is_server:false,
  has_security_descriptor_control:true,
  has_ip_helper_lib:true,
  has_broken_if_oper_status:false,
  has_physical_mem_access:true,
  has_process_io_counters:true,
  has_terminal_services:true,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:false,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:false,
  has_disabled_user_tos_setting:true,
  has_fileid_dirinfo:true,
  has_exclusiveaddruse:true,
  has_buggy_restart_scan:true,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:true,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:false,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_xp = {
  chunksize:0,
  heapslop:0x0,
  is_server:false,
  has_security_descriptor_control:true,
  has_ip_helper_lib:true,
  has_broken_if_oper_status:false,
  has_physical_mem_access:true,
  has_process_io_counters:true,
  has_terminal_services:true,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:true,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:true,
  has_disabled_user_tos_setting:true,
  has_fileid_dirinfo:true,
  has_exclusiveaddruse:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:false,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:true,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_2003 = {
  chunksize:0,
  heapslop:0x4,
  is_server:true,
  has_security_descriptor_control:true,
  has_ip_helper_lib:true,
  has_broken_if_oper_status:false,
  has_physical_mem_access:false,
  has_process_io_counters:true,
  has_terminal_services:true,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:true,
  has_disabled_user_tos_setting:true,
  has_fileid_dirinfo:true,
  has_exclusiveaddruse:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:false,
  needs_logon_sid_in_sid_list:false,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:false,
  has_gaa_prefixes:true,
  has_gaa_on_link_prefix:false,
  supports_all_posix_ai_flags:false,
};

static NO_COPY wincaps wincap_vista = {
  chunksize:0,
  heapslop:0x4,
  is_server:false,
  has_security_descriptor_control:true,
  has_ip_helper_lib:true,
  has_broken_if_oper_status:false,
  has_physical_mem_access:false,
  has_process_io_counters:true,
  has_terminal_services:true,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:true,
  has_disabled_user_tos_setting:true,
  has_fileid_dirinfo:true,
  has_exclusiveaddruse:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:true,
  needs_logon_sid_in_sid_list:false,
  needs_count_in_si_lpres2:true,
  has_recycle_dot_bin:true,
  has_gaa_prefixes:true,
  has_gaa_on_link_prefix:true,
  supports_all_posix_ai_flags:true,
};

wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));

void
wincapc::init ()
{
  const char *os;
  bool has_osversioninfoex = true;

  if (caps)
    return;		// already initialized

  memset (&version, 0, sizeof version);
  /* Request versionex info first, which is available on all systems since
     NT4 SP6 anyway.  If that fails, call the simple version. */
  version.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEX);
  if (!GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version)))
    {
      has_osversioninfoex = false;
      version.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
      GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version));
    }

  switch (version.dwPlatformId)
    {
      case VER_PLATFORM_WIN32_NT:
	switch (version.dwMajorVersion)
	  {
	    case 4:
	      os = "NT";
	      if (!has_osversioninfoex
		  && strcmp (version.szCSDVersion, "Service Pack 4") < 0)
		caps = &wincap_nt4;
	      else
		caps = &wincap_nt4sp4;
	      break;
	    case 5:
	      os = "NT";
	      switch (version.dwMinorVersion)
		{
		  case 0:
		    caps = &wincap_2000;
		    break;

		  case 1:
		    caps = &wincap_xp;
		    if (version.wServicePackMajor < 1)
		      ((wincaps *)this->caps)->has_gaa_prefixes = false;
		    break;

		  default:
		    caps = &wincap_2003;
		}
	      break;
	    case 6:
	      os = "NT";
	      caps = &wincap_vista;
	      break;
	    default:
	      os = "??";
	      caps = &wincap_unknown;
	      break;
	  }
	break;
      case VER_PLATFORM_WIN32_WINDOWS:
	/* I'd be very surprised if this code is ever hit, but it doesn't
	   hurt to keep it. */
	api_fatal ("Windows 95/98/Me are not supported.");
	break;
      default:
	os = "??";
	caps = &wincap_unknown;
	break;
    }

  if (has_osversioninfoex && version.wProductType != VER_NT_WORKSTATION)
    ((wincaps *)this->caps)->is_server = true;

  BOOL is_wow64_proc = FALSE;
  if (IsWow64Process (GetCurrentProcess (), &is_wow64_proc))
    wow64 = is_wow64_proc;
  else
    ((wincaps *)this->caps)->needs_count_in_si_lpres2 = false;

  __small_sprintf (osnam, "%s-%d.%d", os, version.dwMajorVersion,
		   version.dwMinorVersion);
}

void
wincapc::set_chunksize (DWORD nchunksize)
{
  ((wincaps *)this->caps)->chunksize = nchunksize;
}