351 lines
11 KiB
C++
351 lines
11 KiB
C++
/* wincap.cc -- figure out on which OS we're running. Set the
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capability class to the appropriate values.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "security.h"
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#include "ntdll.h"
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/* CV, 2008-10-23: All wincapc's have to be in the .cygwin_dll_common section,
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same as wincap itself. Otherwise the capability changes made in
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wincapc::init() are not propagated to any subsequently started process
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in the same session. I'm only writing this longish comment because I'm
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puzzled that this has never been noticed before... */
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wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:false,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:false,
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has_gaa_on_link_prefix:false,
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has_gaa_largeaddress_bug:false,
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supports_all_posix_ai_flags:false,
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has_restricted_stack_args:false,
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has_transactions:false,
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has_sendmsg:false,
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has_broken_udf:true,
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has_broken_alloc_console:false,
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has_always_all_codepages:false,
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has_localenames:false,
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has_fast_cwd:false,
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has_restricted_raw_disk_access:false,
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use_dont_resolve_hack:true,
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has_console_logon_sid:false,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:false,
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has_pipe_reject_remote_clients:false,
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terminate_thread_frees_stack:false,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_set_thread_stack_guarantee:false,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:false,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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};
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wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:false,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:false,
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has_gaa_on_link_prefix:false,
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has_gaa_largeaddress_bug:false,
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supports_all_posix_ai_flags:false,
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has_restricted_stack_args:true,
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has_transactions:false,
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has_sendmsg:false,
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has_broken_udf:true,
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has_broken_alloc_console:false,
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has_always_all_codepages:false,
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has_localenames:false,
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has_fast_cwd:false,
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has_restricted_raw_disk_access:false,
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use_dont_resolve_hack:true,
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has_console_logon_sid:false,
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wow64_has_secondary_stack:true,
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has_program_compatibility_assistant:false,
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has_pipe_reject_remote_clients:false,
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terminate_thread_frees_stack:false,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:true,
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has_processor_groups:false,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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};
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wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:true,
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needs_count_in_si_lpres2:true,
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has_recycle_dot_bin:true,
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has_gaa_on_link_prefix:true,
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has_gaa_largeaddress_bug:true,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_broken_alloc_console:false,
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has_always_all_codepages:true,
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has_localenames:true,
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has_fast_cwd:true,
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has_restricted_raw_disk_access:true,
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use_dont_resolve_hack:false,
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has_console_logon_sid:false,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:true,
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has_pipe_reject_remote_clients:true,
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terminate_thread_frees_stack:true,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:false,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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};
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wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:true,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:true,
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has_gaa_on_link_prefix:true,
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has_gaa_largeaddress_bug:true,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_broken_alloc_console:true,
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has_always_all_codepages:true,
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has_localenames:true,
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has_fast_cwd:true,
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has_restricted_raw_disk_access:true,
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use_dont_resolve_hack:false,
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has_console_logon_sid:true,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:true,
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has_pipe_reject_remote_clients:true,
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terminate_thread_frees_stack:true,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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};
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wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:true,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:true,
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has_gaa_on_link_prefix:true,
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has_gaa_largeaddress_bug:false,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_broken_alloc_console:true,
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has_always_all_codepages:true,
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has_localenames:true,
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has_fast_cwd:true,
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has_restricted_raw_disk_access:true,
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use_dont_resolve_hack:false,
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has_console_logon_sid:true,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:true,
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has_pipe_reject_remote_clients:true,
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terminate_thread_frees_stack:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:false,
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};
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wincaps wincap_10 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:true,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:true,
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has_gaa_on_link_prefix:true,
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has_gaa_largeaddress_bug:false,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_broken_alloc_console:true,
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has_always_all_codepages:true,
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has_localenames:true,
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has_fast_cwd:true,
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has_restricted_raw_disk_access:true,
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use_dont_resolve_hack:false,
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has_console_logon_sid:true,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:true,
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has_pipe_reject_remote_clients:true,
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terminate_thread_frees_stack:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:true,
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has_broken_prefetchvm:true,
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has_new_pebteb_region:false,
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has_broken_whoami:false,
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};
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wincaps wincap_10_1511 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_mandatory_integrity_control:true,
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needs_count_in_si_lpres2:false,
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has_recycle_dot_bin:true,
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has_gaa_on_link_prefix:true,
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has_gaa_largeaddress_bug:false,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_broken_alloc_console:true,
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has_always_all_codepages:true,
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has_localenames:true,
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has_fast_cwd:true,
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has_restricted_raw_disk_access:true,
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use_dont_resolve_hack:false,
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has_console_logon_sid:true,
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wow64_has_secondary_stack:false,
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has_program_compatibility_assistant:true,
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has_pipe_reject_remote_clients:true,
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terminate_thread_frees_stack:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_set_thread_stack_guarantee:true,
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has_broken_rtl_query_process_debug_information:false,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:true,
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has_broken_whoami:false,
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};
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wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
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void
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wincapc::init ()
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{
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if (caps)
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return; // already initialized
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GetSystemInfo (&system_info);
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version.dwOSVersionInfoSize = sizeof (RTL_OSVERSIONINFOEXW);
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RtlGetVersion (&version);
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/* Overwrite unreliable kernel version with correct values returned by
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RtlGetNtVersionNumbers. See git log of this change for a description. */
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RtlGetNtVersionNumbers (&version.dwMajorVersion,
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&version.dwMinorVersion,
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&version.dwBuildNumber);
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switch (version.dwMajorVersion)
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{
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case 5:
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switch (version.dwMinorVersion)
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{
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case 1:
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caps = &wincap_xpsp2;
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break;
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default:
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caps = &wincap_2003;
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}
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break;
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case 6:
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switch (version.dwMinorVersion)
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{
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case 0:
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caps = &wincap_vista;
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break;
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case 1:
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caps = &wincap_7;
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break;
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case 2:
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case 3:
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caps = &wincap_8;
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break;
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default:
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caps = &wincap_10;
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break;
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}
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break;
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case 10:
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default:
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if (version.dwBuildNumber >= 10586)
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caps = &wincap_10_1511;
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else
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caps = &wincap_10;
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break;
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}
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((wincaps *)caps)->is_server = (version.wProductType != VER_NT_WORKSTATION);
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#ifdef __x86_64__
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wow64 = 0;
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/* 64 bit systems have one more guard page than their 32 bit counterpart. */
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++((wincaps *)caps)->def_guard_pages;
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#else
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/* RtlQueryProcessDebugInformation/CreateToolhelp32Snapshot both crash the
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target process on 64 bit XP/2003 in native 64 bit mode only. Reset the
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flag here for 32 bit. */
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((wincaps *)caps)->has_broken_rtl_query_process_debug_information = false;
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/* Windows 10 1511 has a stack move when a 64 bit process is started from
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a 32 bit process, just as it was vice versa in XP/2003. Reset the flag
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here for 32 bit. */
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if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
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ProcessWow64Information,
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&wow64, sizeof wow64, NULL))
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&& !wow64)
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#endif
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{
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((wincaps *)caps)->needs_count_in_si_lpres2 = false;
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((wincaps *)caps)->has_restricted_stack_args = false;
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((wincaps *)caps)->wow64_has_secondary_stack = false;
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((wincaps *)caps)->has_gaa_largeaddress_bug = false;
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((wincaps *)caps)->has_broken_prefetchvm = false;
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}
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__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
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version.dwMinorVersion);
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}
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