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/* wincap.cc -- figure out on which OS we're running. Set the
capability class to the appropriate values.
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... */
wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:1,
max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:false,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin: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_sendmsg:false,
has_broken_udf:true,
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_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:false,
has_pipe_reject_remote_clients:false,
terminate_thread_frees_stack:false,
has_precise_system_time:false,
has_microsoft_accounts:false,
has_set_thread_stack_guarantee:false,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:false,
has_broken_prefetchvm:false,
has_new_pebteb_region:false,
has_broken_whoami:true,
};
wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:1,
max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:false,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin:false,
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_sendmsg:false,
has_broken_udf:true,
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_console_logon_sid:false,
wow64_has_secondary_stack:true,
has_program_compatibility_assistant:false,
has_pipe_reject_remote_clients:false,
terminate_thread_frees_stack:false,
has_precise_system_time:false,
has_microsoft_accounts:false,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:true,
has_processor_groups:false,
has_broken_prefetchvm:false,
has_new_pebteb_region:false,
has_broken_whoami:true,
};
wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:1,
max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:true,
needs_count_in_si_lpres2:true,
has_recycle_dot_bin: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_sendmsg:true,
has_broken_udf: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_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:true,
has_pipe_reject_remote_clients:true,
terminate_thread_frees_stack:true,
has_precise_system_time:false,
has_microsoft_accounts:false,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:false,
has_broken_prefetchvm:false,
has_new_pebteb_region:false,
has_broken_whoami:true,
};
wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:1,
max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:true,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin: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_sendmsg:true,
has_broken_udf:false,
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_console_logon_sid:true,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:true,
has_pipe_reject_remote_clients:true,
terminate_thread_frees_stack:true,
has_precise_system_time:false,
has_microsoft_accounts:false,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:true,
has_broken_prefetchvm:false,
has_new_pebteb_region:false,
has_broken_whoami:true,
};
wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:2,
max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:true,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin: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_sendmsg:true,
has_broken_udf:false,
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_console_logon_sid:true,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:true,
has_pipe_reject_remote_clients:true,
terminate_thread_frees_stack:true,
has_precise_system_time:true,
has_microsoft_accounts:true,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:true,
has_broken_prefetchvm:false,
has_new_pebteb_region:false,
has_broken_whoami:false,
};
wincaps wincap_10 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:2,
max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:true,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin: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_sendmsg:true,
has_broken_udf:false,
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_console_logon_sid:true,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:true,
has_pipe_reject_remote_clients:true,
terminate_thread_frees_stack:true,
has_precise_system_time:true,
has_microsoft_accounts:true,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:true,
has_broken_prefetchvm:true,
has_new_pebteb_region:false,
has_broken_whoami:false,
};
wincaps wincap_10_1511 __attribute__((section (".cygwin_dll_common"), shared)) = {
def_guard_pages:2,
max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
is_server:false,
has_mandatory_integrity_control:true,
needs_count_in_si_lpres2:false,
has_recycle_dot_bin: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_sendmsg:true,
has_broken_udf:false,
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_console_logon_sid:true,
wow64_has_secondary_stack:false,
has_program_compatibility_assistant:true,
has_pipe_reject_remote_clients:true,
terminate_thread_frees_stack:true,
has_precise_system_time:true,
has_microsoft_accounts:true,
has_set_thread_stack_guarantee:true,
has_broken_rtl_query_process_debug_information:false,
has_processor_groups:true,
has_broken_prefetchvm:false,
has_new_pebteb_region:true,
has_broken_whoami:false,
};
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
void
wincapc::init ()
{
if (caps)
return; // already initialized
GetSystemInfo (&system_info);
version.dwOSVersionInfoSize = sizeof (RTL_OSVERSIONINFOEXW);
RtlGetVersion (&version);
/* Overwrite unreliable kernel version with correct values returned by
RtlGetNtVersionNumbers. See git log of this change for a description. */
RtlGetNtVersionNumbers (&version.dwMajorVersion,
&version.dwMinorVersion,
&version.dwBuildNumber);
switch (version.dwMajorVersion)
{
case 5:
switch (version.dwMinorVersion)
{
case 1:
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;
case 2:
case 3:
caps = &wincap_8;
break;
default:
caps = &wincap_10;
break;
}
break;
case 10:
default:
if (version.dwBuildNumber >= 10586)
caps = &wincap_10_1511;
else
caps = &wincap_10;
break;
}
((wincaps *)caps)->is_server = (version.wProductType != VER_NT_WORKSTATION);
#ifdef __x86_64__
wow64 = 0;
/* 64 bit systems have one more guard page than their 32 bit counterpart. */
++((wincaps *)caps)->def_guard_pages;
#else
/* RtlQueryProcessDebugInformation/CreateToolhelp32Snapshot both crash the
target process on 64 bit XP/2003 in native 64 bit mode only. Reset the
flag here for 32 bit. */
((wincaps *)caps)->has_broken_rtl_query_process_debug_information = false;
/* Windows 10 1511 has a stack move when a 64 bit process is started from
a 32 bit process, just as it was vice versa in XP/2003. Reset the flag
here for 32 bit. */
if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
ProcessWow64Information,
&wow64, sizeof wow64, NULL))
&& !wow64)
#endif
{
((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;
((wincaps *)caps)->has_broken_prefetchvm = false;
}
__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
version.dwMinorVersion);
}
|
