newlib/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, 2008,
   2009, 2010, 2011, 2012 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"
#include "security.h"
#include "ntdll.h"

/* CV, 2008-10-23: All wincapc's have to be in the .cygwin_dll_common section,
   same as wincap itself.  Otherwise the capability changes made in
   wincapc::init() are not propagated to any subsequently started process
   in the same session.  I'm only writing this longish comment because I'm
   puzzled that this has never been noticed before... */

/* Minimal set of capabilities required to run Cygwin. */
#define wincap_minimal wincap_2000

wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:true,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:false,
  has_disk_ex_ioctls:false,
  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,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  has_recvmsg:false,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
  has_stack_size_param_is_a_reservation:false,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:true,
};

wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:true,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:false,
  has_disk_ex_ioctls:false,
  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,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  has_recvmsg:false,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
  has_stack_size_param_is_a_reservation:false,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:true,
};

wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:true,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls: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:false,
  has_gaa_on_link_prefix:false,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  has_recvmsg:true,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:true,
  has_create_global_privilege:false,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls: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,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  has_recvmsg:true,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:true,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls: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,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  has_recvmsg:true,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:false,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls: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,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:true,
  has_transactions:false,
  has_recvmsg:true,
  has_sendmsg:false,
  has_broken_udf:true,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:true,
  has_program_compatibility_assistant:false,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:false,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls: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,
  has_gaa_largeaddress_bug:true,
  supports_all_posix_ai_flags:true,
  has_restricted_stack_args:false,
  has_transactions:true,
  has_recvmsg:true,
  has_sendmsg:true,
  has_broken_udf:false,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:true,
  has_localenames:true,
  has_fast_cwd:true,
  has_restricted_raw_disk_access:true,
  use_dont_resolve_hack:false,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:false,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:true,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:false,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:true,
  needs_logon_sid_in_sid_list:false,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:true,
  has_gaa_prefixes:true,
  has_gaa_on_link_prefix:true,
  has_gaa_largeaddress_bug:true,
  supports_all_posix_ai_flags:true,
  has_restricted_stack_args:false,
  has_transactions:true,
  has_recvmsg:true,
  has_sendmsg:true,
  has_broken_udf:false,
  has_console_handle_problem:true,
  has_broken_alloc_console:true,
  has_always_all_codepages:true,
  has_localenames:true,
  has_fast_cwd:true,
  has_restricted_raw_disk_access:true,
  use_dont_resolve_hack:false,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:true,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:true,
  kernel_is_always_casesensitive:false,
};

wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
  max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
  is_server:false,
  has_physical_mem_access:false,
  has_create_global_privilege:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_disk_ex_ioctls:true,
  has_buggy_restart_scan:false,
  has_mandatory_integrity_control:true,
  needs_logon_sid_in_sid_list:false,
  needs_count_in_si_lpres2:false,
  has_recycle_dot_bin:true,
  has_gaa_prefixes:true,
  has_gaa_on_link_prefix:true,
  has_gaa_largeaddress_bug:false,
  supports_all_posix_ai_flags:true,
  has_restricted_stack_args:false,
  has_transactions:true,
  has_recvmsg:true,
  has_sendmsg:true,
  has_broken_udf:false,
  has_console_handle_problem:true,
  has_broken_alloc_console:true,
  has_always_all_codepages:true,
  has_localenames:true,
  has_fast_cwd:true,
  has_restricted_raw_disk_access:true,
  use_dont_resolve_hack:false,
  has_stack_size_param_is_a_reservation:true,
  has_console_logon_sid:true,
  wow64_has_secondary_stack:false,
  has_program_compatibility_assistant:true,
  kernel_is_always_casesensitive:false,
};

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

void
wincapc::init ()
{
  if (caps)
    return;		// already initialized

  GetSystemInfo (&system_info);
  version.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEX);
  GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version));

  switch (version.dwMajorVersion)
    {
      case 5:
	switch (version.dwMinorVersion)
	  {
	    case 0:
	      if (version.wServicePackMajor < 4)
		caps = &wincap_2000;
	      else
		caps = &wincap_2000sp4;
	      break;

	    case 1:
	      caps = &wincap_xp;
	      switch (version.wServicePackMajor)
		{
		case 0:
		  caps = &wincap_xp;
		case 1:
		  caps = &wincap_xpsp1;
		default:
		  caps = &wincap_xpsp2;
		}
	      break;

	    default:
	      caps = &wincap_2003;
	  }
	break;
      case 6:
	switch (version.dwMinorVersion)
	  {
	    case 0:
	      caps = &wincap_vista;
	      break;
	    case 1:
	      caps = &wincap_7;
	      break;
	    default:
	      caps = &wincap_8;
	      break;
	  }
	break;
      default:
	caps = &wincap_minimal;
	break;
    }

  ((wincaps *)caps)->is_server = (version.wProductType != VER_NT_WORKSTATION);
  if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
					     ProcessWow64Information,
					     &wow64, sizeof wow64, NULL))
      && !wow64)
    {
      ((wincaps *)caps)->needs_count_in_si_lpres2 = false;
      ((wincaps *)caps)->has_restricted_stack_args = false;
      ((wincaps *)caps)->wow64_has_secondary_stack = false;
      ((wincaps *)caps)->has_gaa_largeaddress_bug = false;
    }

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