RtlGetNtVersionNumbers returns the build number with some upper bits
set for no apparent reason. The fact that RtlGetNtVersionNumbers is
undocumented doesn't exactly help.
Just filter out the upper WORD for now. If build numbers are in
danger to become 6 digit numbers, re-evaluate.
Convert sys_privs to const struct with TOKEN_PRIVILEGES layout.
Drop function get_system_priv_list. Just use pointer to sys_privs.
Dropping max_sys_priv from wincaps requires to make sure that the
bitfield is 8 byte aligned on x86_64, otherwise gcc (5.3 only?)
apparently breaks access to the bitfield (off by 4 bytes).
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Bump GPLv2+ to GPLv3+ for some files, clarify BSD 2-clause.
Everything else stays under GPLv3+.
New Linking Exception exempts resulting executables from LGPLv3 section 4.
Add CONTRIBUTORS file to keep track of licensing.
Remove 'Copyright Red Hat Inc' comments.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* ntdll.h (RtlGetNtVersionNumbers): Declare.
* wincap.cc (wincapc::init): Overwrite kernel version info
returned by RtlGetVersion with correct info returnd by
RtlGetNtVersionNumbers. Add comment.
Originally, using RtlGetVersion instead of GetVersionEx was supposed to
fix the fact that GetVersionInfo returns the wrong kernel version if the
executable has been built with an old manifest (or none at all), starting
with Windows 8.1. Either this never really worked as desired and our
testing was flawed, or this has been changed again with Windows 10, so
that RtlGetVersion does the kernel faking twist as well. Since we're
only reading the value in the first process in a process tree. the entire
process tree is running with a wrong OS version information in that case.
Fortunately, the (undocumented) RtlGetNtVersionNumbers function is not
affected by this nonsense, so we simply override the OS version info
fields with the correct values now.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* sec_auth.cc (get_token_group_sidlist): Drop auth_luid and
auth_pos parameter. Remove code adding a logon SID.
(get_initgroups_sidlist): Drop auth_luid and auth_pos parameter.
Drop in call to get_token_group_sidlist. Accommodate in callers.
(get_setgroups_sidlist): Ditto.
(create_token): Explicitely set auth_luid to ANONYMOUS_LOGON_LUID
or LOCALSERVICE_LUID depending on OS. Explain why.
Remove handling of logon SID since we don't generate one anymore.
(lsaauth): Drop now unused local variable auth_luid and auth_pos.
* wincap.h (wincaps::has_broken_whoami): New element.
* wincap.cc: Implement above element throughout.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Observed running hexchat under X. For some reason the call to
LoadLibraryEx(..., LOAD_LIBRARY_SEARCH_SYSTEM32) in dll_load
hangs when trying to autoload MsgWaitForMultipleObjectsEx in
select.cc after hexchat forks to run DNS calls. Dropping the
call and just using full paths as in 2.3.1 fixes the issue.
* autoload.cc (dll_load): Drop call to LoadLibraryEx with
LOAD_LIBRARY_SEARCH_SYSTEM32 flag.
* wincap.h (wincaps::has_load_lib_search_flags): Remove.
* wincap.cc (wincaps::has_load_lib_search_flags): Drop handling
this flag.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* autoload.cc (dll_load): Move safe loading from std_dll_init here.
Add code to handle systems supporting LOAD_LIBRARY_SEARCH flags.
Add comments to explain what the code is doing. Fix up comment
preceeding this function.
(std_dll_init): Move safe loading code to dll_load.
* wincap.h (wincaps::has_load_lib_search_flags): New element.
* wincap.cc: Implement above element throughout.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* dcrt0.cc: Semi-revert commit 12743c2d5d.
(dll_crt0_0): Drop setting wow64_needs_stack_adjustment on 64 bit.
(_dll_crt0): Split out 64 bit code again and always create new main
thread stack, unless forked off from the non main thread in the parent.
Call create_new_main_thread_stack with parent stack commitsize if
started from the parent's main thread.
Only call child_info_fork::alloc_stack for the latter case on 64 bit.
Slightly rearrange moving rsp and rbp to new stack and document how.
Revert 32 bit wow64 handling to its former self.
* miscfunc.cc (create_new_main_thread_stack): Take a commitsize
parameter and use it if it's not 0. Don't set _main_tls here, it's
done in the caller _dll_crt0 anyway. Return stackbase - 16 bytes,
rather than stacklimit (which was very wrong anyway).
* miscfuncs.h (create_new_main_thread_stack): Accommodate declaration
to aforementioned change.
* wincap.h (wincaps::has_3264_stack_broken): Remove element.
* wincap.cc: Ditto, throughout.
* wow64.cc: Semi-revert to pre-12743c2d5d2721f3a80b4d7671a349be03c1f520
but keep architecture-agnostic type changes intact. Fix formatting.
* wow64.h: Revert to pre-12743c2d5d2721f3a80b4d7671a349be03c1f520.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* dcrt0.cc (dll_crt0_0): On 64 bit, set wow64_needs_stack_adjustment
if not started from a 64 bit process.
(_dll_crt0): Enable wow64_needs_stack_adjustment branch on 64 bit
as well. Remove 64 bit only code. Introduce CREATE_STACK and
FIX_STACK macros to conditionalize the code. Rearrange and
partially rewrite comments.
* wincap.h (wincaps::has_3264_stack_broken): New element.
* wincap.cc: Implement above element throughout.
(wincapc::init): Set has_3264_stack_broken to false on 32 bit.
* wow64.cc: Enable functionality on 64 bit architecture, except for
wow64_revert_to_original_stack. Enhance comments to explain.
(wow64_eval_expected_main_stack): Make 64 bit clean.
(wow64_test_for_64bit_parent): Ditto.
* wow64.h: Export wow64_revert_to_original_stack on 32 bit only,
everything else on all architectures.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* fhandler_process.cc (heap_info::fill_if_match): Return NULL, not 0.
(thread_info::fill_if_match): Ditto.
(thread_info::fill_if_match): New method to extract TEB info from
PEB/TEB region since W10 1511.
(format_process_maps): Drop outdated FIXME comment. Add code to handle
PEB/TEB region since W10 1511.
* mmap.cc (posix_madvise): Align comment to new W10 1511 version.
* wincap.h (wincaps::has_new_pebteb_region): New element.
* wincap.cc: Implement above element throughout.
(wincap_10_1511): New global wincaps to support Windows 10 since 1511.
(wincapc::init): Use wincap_10_1511 for W10 builds >= 10586.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* autoload.cc (GetLogicalProcessorInformationEx): Import.
(SetThreadGroupAffinity): Import.
* fhandler_proc.cc (add_size): New macro.
(get_msb): New inline function.
(mask_bits): Ditto.
(format_proc_cpuinfo): Drop handling of old CPUs. Check if we're
running on a OS version supporting porcessor groups. If so, use
SetThreadGroupAffinity to set thread affinity. Improve cache info
to include 3rd level cache on Intel CPUs. Improve multi core info.
* wincap.h (wincaps::has_processor_groups): New element.
* wincap.cc: Implement above element throughout.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* autoload.cc (SetThreadStackGuarantee): Import.
* cygtls.h (struct _cygtls): Replace thread_context with a ucontext_t
called context.
* exceptions.cc (exception::handle): Exit from process via signal_exit
in case sig_send returns from handling a stack overflow SIGSEGV.
Explain why.
(dumpstack_overflow_wrapper): Thread wrapper to create a stackdump
from another thread.
(signal_exit): Fix argument list to reflect three-arg signal handler.
In case we have to create a stackdump for a stack overflow condition,
do so from a separate thread. Explain why.
(sigpacket::process): Don't run signal_exit on alternate stack.
(altstack_wrapper): Wrapper function to do stack correction when
calling the signal handler on an alternate stack to handle a stack
overflow. Make sure to have lots of comments.
(_cygtls::call_signal_handler): Drop local context variable to reduce
stack pressure. Use this->context instead. Change inline assembler
to call altstack_wrapper.
(_cygtls::signal_debugger): Accommodate aforementioned change to
struct _cygtls.
* tlsoffset.h: Regenerate.
* tlsoffset64.h: Regenerate.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
(wincaps): Drop has_physical_mem_access.
(wincap_10): New global wincaps to support Windows 10.
(wincapc::init): Use wincap_10 for version >= 6.4 and as default.
* wincap.h (wincaps::has_physical_mem_access): remove.
* wincap.cc (wincapc::init): Rather than GetVersionEx, call
RtlGetVersion which is not crippled by missing Windows 8.1 manifest.
* wincap.h (wincapc): Change type of version to RTL_OSVERSIONINFOEXW.
Align formatting of all class members.
* times.cc (GetSystemTimePreciseAsFileTime): Temporarily declare here
to workaround missing definition in 32 bit w32api headers.
(get_system_time): New always inline function to call either
GetSystemTimePreciseAsFileTime or GetSystemTimeAsFileTime on a per OS
basis. Call throughout instead of GetSystemTimeAsFileTime.
* wincap.h (wincaps::has_precise_system_time): New element.
* wincap.cc: Implement above element throughout.
thread stack on systems not freeing it by themselves.
* wincap.h (wincaps::terminate_thread_frees_stack): New element.
* wincap.cc: Implement above element throughout.
systems. Change comment acordingly.
* wincap.h (wincaps::has_gaa_largeaddress_bug): New element.
* wincap.cc: Implement above element throughout.
(wincap_8): New globale wincaps to support Windows 8.
(wincapc::init): Take Windows 8 into account. Set new
has_gaa_largeaddress_bug member to false on 32 bit systems.
* devices.in (exists_console): Use fhandler_console::exists () rather than raw
test.
* devices.cc: Regenerate.
* fhandler.h (fhandler_console::exists): Define new function.
* fhandler_console.cc (fhandler_console::need_invisible): Use
fhandler_console::exists () rather than raw test.
* spawn.cc: Rename assitant to assistant throughout.
(child_info_spawn::worker): Simplify test for when to start a non-Cygwin
process in its own process group. Just do it whenever we start a non-Cygwin
process.
Corinna Vinschen