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, 2008,
   2009, 2010, 2011 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_nt4sp4

wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_CHANGE_NOTIFY_PRIVILEGE,
  is_server:false,
  has_dacl_protect:false,
  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_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem:false,
  has_recvmsg:false,
  has_sendmsg:false,
  has_broken_udf:false,
  has_console_handle_problem:false,
  has_broken_alloc_console:false,
  has_always_all_codepages:false,
  has_localenames:false,
  has_mwmo_inputavailable:false,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
};

wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
};

wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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:true,
  has_ioctl_storage_get_media_types_ex:false,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:false,
  has_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
};

wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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_fileid_dirinfo: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,
  supports_all_posix_ai_flags:false,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
};

wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
};

wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x0,
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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:true,
  has_ioctl_storage_get_media_types_ex:true,
  has_extended_priority_class:true,
  has_guid_volumes:true,
  has_disk_ex_ioctls:true,
  has_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:true,
};

wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x4,
  max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
  is_server:true,
  has_dacl_protect: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_fileid_dirinfo: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,
  has_restricted_stack_args:true,
  has_transactions:false,
  ts_has_dep_problem: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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:false,
  has_restricted_raw_disk_access:false,
  use_dont_resolve_hack:false,
};

wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x4,
  max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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_fileid_dirinfo: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,
  has_restricted_stack_args:false,
  has_transactions:true,
  ts_has_dep_problem:false,
  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_mwmo_inputavailable:true,
  has_buggy_thread_startup:true,
  has_fast_cwd:true,
  has_restricted_raw_disk_access:true,
  use_dont_resolve_hack:false,
};

wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
  chunksize:0,
  heapslop:0x4,
  max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
  is_server:false,
  has_dacl_protect: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_fileid_dirinfo: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,
  supports_all_posix_ai_flags:true,
  has_restricted_stack_args:false,
  has_transactions:true,
  ts_has_dep_problem:false,
  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_mwmo_inputavailable:true,
  has_buggy_thread_startup:false,
  has_fast_cwd:true,
  has_restricted_raw_disk_access:true,
  use_dont_resolve_hack:false,
};

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

void
wincapc::init ()
{
  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:
	      /* No mercy.  We require at least NT4 SP4. */
	      caps = &wincap_nt4sp4;
	      break;
	    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;
		  default:
		    caps = &wincap_7;
		    break;
		}
	      break;
	    default:
	      caps = &wincap_minimal;
	      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:
	caps = &wincap_minimal;
	break;
    }

  if (has_osversioninfoex && version.wProductType != VER_NT_WORKSTATION)
    {
      ((wincaps *)caps)->is_server = true;
      if (version.dwMajorVersion >= 6
	  && (version.wSuiteMask
	      & (VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS))
	     == VER_SUITE_TERMINAL)
	((wincaps *)caps)->ts_has_dep_problem = true;
    }
  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;
    }

  if (!wow64)
    ((wincaps *) caps)->has_buggy_thread_startup = false;
  __small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
		   version.dwMinorVersion);
}

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