shared_prefix depending only on terminal service capability.
* dcrt0.cc (dll_crt0_1): Don't call set_cygwin_privileges here.
* fhandler_fifo.cc (fhandler_fifo::open): Create the mutex as global
object.
* posix_ipc.cc (ipc_mutex_init): Use cygheap->shared_prefix.
(ipc_cond_init): Ditto.
* sec_helper.cc (privilege_name): Make static. Use LookupPrivilegeName
directly to be independent of the state of cygheap.
(set_privilege): Take a LUID as parameter instead of an index value.
Only print debug output in case of failure.
(set_cygwin_privileges): Add comment. Use LookupPrivilegeValue to
get privilege LUIDs.
(init_global_security): Call set_cygwin_privileges here.
* security.h (privilege_name): Drop declaration.
(set_privilege): Declare according to above change.
(set_process_privilege): Call privilege_luid to get LUID.
(_push_thread_privilege): Ditto.
* shared.cc (open_shared): Add comment. On systems supporting the
SeCreateGlobalPrivilege, try to create/open global shared memory first.
Fall back to local shared memory if that fails.
* thread.cc (semaphore::semaphore): Use cygheap->shared_prefix.
* wincap.h (wincapc::has_create_global_privilege): New element.
* wincap.cc: Implement above element throughout.
Increase size of stack reserved and increase size before the current stack
pointer. Use pointers when doing arithmetic.
(dll_crt0_1): Initialize exception handler when we notice we're the child of a
fork from non-main thread.
* fork.cc (frok::parent): Make argument volatile.
(frok::child): Ditto.
(lock_signals): New class.
(lock_pthread): Ditto.
(hold_everhthing): Ditto.
(frok::parent): Move atforkprepare and atforkparent to lock_pthread class.
(fork): Make ischild boolean. Use hold_everything variable within limited
scope to set various mutexes in such a way as to avoid deadlocks.
* thread.h (pthread_mutex::tid): New variable, active when debugging for
tracking thread id of owner.
(pthread_mutex::set_owner): Set tid when debugging.
* thread.cc (pthread_mutex::pthread_mutex): Clear tid.
(pthread_mutex::_unlock): Ditto when unlocking.
(pthread_mutex::fixup_after_fork): Set tid to special value after forking since
owner is unknown.
impersonation token, which collides with Vista UAC.
* cygheap.h (deimpersonate): revert to self instead of impersonating
hProcImpToken.
(reimpersonate): Only impersonate if setuid.
* dcrt0.cc (dll_crt0_0): Don't initialize hProcImpToken here.
(dll_crt0_1): Set privileges on hProcToken.
* fork.cc (frok::child): Set privileges on hProcToken. Close handle to
hProcImpToken.
* grp.cc (internal_getgroups): Use hProcToken instead of hProcImpToken.
* security.cc (check_access): Create hProcImpToken on demand here.
* security.h (set_process_privilege): Set privileges on hProcToken.
(_push_thread_privilege): Use hProcToken instead of hProcImpToken.
(pop_thread_privilege): If not setuid'ed, revert to self.
* syscalls.cc (setegid32): Drop setting primary group on hProcImpToken.
Close handle to hProcImpToken.
* uinfo.cc (internal_getlogin): Ditto.
* winsup.h (clear_procimptoken): New inline function.
(child_info_spawn::__stdin): Ditto.
(CURR_CHILD_INFO_MAGIC): Regenerate.
* dcrt0.cc (check_sanity_and_sync): Minor cleanup.
(child_info_spawn::handle_spawn): Handle new __std* elements by calling
move_fd.
* dtable.cc (dtable::move_fd): Define new function.
* dtable.h (dtable::move_fd): Declare new function.
* fhandler.h (fhandler_pipe::popen_pid): Declare new element.
* fhandler.h (fhandler_pipe::get_popen_pid): Define new function.
* fhandler.h (fhandler_pipe::set_popen_pid): Ditto.
* pipe.cc (fhandler_pipe::fhandler_pipe): Zero popen_pid.
(fhandler_pipe::dup): Ditto.
* spawn.cc (handle): Change second argument to bool.
(spawn_guts): Accept __stdin/__stdout arguments and set them appropriately in
child_info structure and in STARTUPINFO structure.
* syscalls.cc (popen): New cygwin-specific implementation using spawn.
(pclose): Ditto.
* winsup.h (spawn_guts): Accommodate new arguments for spawn_guts.
* fhandler.cc (fhandler_base::set_no_inheritance): Make second arg a bool.
* fhandler.h (fhandler_base::set_no_inheritance): Ditto for declaration.
* child_info.h (child_info::msv_count): Rename from the now-inappropriate
"zero".
(child_info_spawn::filler): Add filler to work around Vista bug.
(child_info_fork::filler): Ditto.
* dcrt0.cc (get_cygwin_startup_info): Remove "zero" check since it is now
always filled out.
* fork.cc (frok::parent): Move ch.zero manipulation to constructor.
* spawn.cc (spawn_guts): Ditto. Remove _ch wrapper.
* sigproc.cc (child_info::child_info): Initialize starter[].
* shared.cc (shared_info::heap_slop_size): Remove noisy system_printfs.
* shared_info.h (CURR_SHARED_MAGIC): Regenerate.
Expect first DWORD in child_info struct being set to non-zero if
wincap.needs_count_in_si_lpres2 is set. Add comment to explain why.
* fork.cc (frok::parent): Set ch.zero[0] to a sensible count value
if wincap.needs_count_in_si_lpres2 is set.
* spawn.cc (spawn_guts): Ditto. Add filler bytes after ch on stack
to accomodate needs_count_in_si_lpres2.
* wincap.h: Define needs_count_in_si_lpres2 throughout.
* wincap.cc: Ditto.
(dll_crt0_1): Reflect renaming from tty_init to tty::init_session.
(do_exit): Reflect moving of tty_terminate into tty_list.
* exceptions.cc (events_init): Move tty_mutex stuff elsewhere.
* fhandler_console.cc (set_console_title): Use lock_ttys class.
* fhandler_termios.cc (fhandler_termios::bg_check): Make debug output more
accurate.
* fhandler_tty.cc (fhandler_tty_slave::open): Reflect move of attach_tty into
tty_list class. Don't attempt to grab master end of pty if master doesn't
exist.
(fhandler_pty_master::open): Reflect move of allocate_tty into tty_list class.
Use lock_ttys::release to release mutex. Improve debugging output.
(fhandler_pty_master::setup): Remove if 0'ed block. Fix argument to
SetNamedPipeHandleState.
* pinfo.cc (_pinfo::set_ctty): Lock ttys before setting sid/pgid. Improve
debugging. Add temporary debugging.
* tty.cc (tty_list::init_session): New function.
(tty::init_session): Rename from tty_init. Reflect move of attach_tty to
tty_list class.
(tty::create_master): Rename from create_tty_master.
(tty_list::attach): Rename from attach_tty. Reflect renaming of connect_tty to
connect. Ditto for allocate_tty.
(tty_terminate): Delete.
(tty_list::terminate): Subsume tty_terminate. Use lock_ttys rather than
manipulating mutex directly.
(tty_list::allocate): Rename from allocate_tty. Use lock_ttys rather than
manipulating mutex directly. Don't set sid here since linux apparently doesn't
do this. Reflect move of create_tty_master into tty.
(lock_ttys::lock_ttys): Define new constructor.
(lock_ttys::release): New function.
* tty.h (tty::exists): Return false immediately if !master_pid.
(tty::set_master_closed): Define new function.
(tty::create_master): Ditto.
(tty::init_session): Ditto.
(tty_list::mutex): New field.
(tty_list::allocate): Define new function.
(tty_list::connect): Ditto.
(tty_list::attach): Ditto.
(tty_list::init_session): Ditto.
(lock_ttys): New class.
(tty_init): Delete declaration.
(tty_terminate): Ditto.
(attach_tty): Ditto.
(create_tty_master): Ditto.
* dcrt0.cc (child_info_spawn::handle_spawn): Signal ready after we've run
fixup_after_exec.
* dtable.cc (dtable::fixup_after_exec): Add debugging output.
* fhandler_tty.cc (fhandler_pty_master::doecho): Use class version of
to_master.
(fhandler_tty_common::close): Remove obsolete code.
(fhandler_tty_slave::fixup_after_exec): Don't close, since this is done in
dtable's fixup_after_exec. (revisit later?)
(fhandler_pty_master::fixup_after_exec): Ditto.
caller do that.
* dcrt0.cc (child_info_spawn::handle_spawn): Close parent handle here to allow
fixup_after_exec functions to use it.
* cygtls.cc (_cygtls::call2): Avoid calling exit thread if called with
*crt0_1 functions.
* cygtls.h (_cygtls::isinitialized): Check that we actually have a tls before
seeing if it is initialized.
* gendef (_sigfe_maybe): Ditto.
* dcrt0.cc (dll_crt0_1): Remove static, use just one argument.
* dll_init.cc (dllcrt0_info): New structure.
(dll_dllcrt0): Change into a front-end to renamed dll_dllcrt0_1 so that we'll
always be assured of having something like a tls.
(dll_dllcrt0_1): New function, basically renamed from from dll_dllcrt0.
Unconditionally call _my_tls.init_exception_handler now that we are assured of
having a tls. Change variable name from "linking" to "linked".
* winsup.h (dll_crt0_1): Declare.
(dll_dllcrt0_1): Ditto.
(wait_sig): Set hwait_sig to INVALID_HANDLE_VALUE on __SIGEXIT.
* cygtls.cc (_cygtls::init_thread): Zero entire _my_tls structure and no more.
* cygtls.h (_my_tls::padding): Delete.
(CYGTLS_PADSIZE): Redefine concept of padding to mean padding at the end of the
stack.
* dcrt0.cc (initialize_main_tls): Change return to void.
* gentls_offsets: Treat const specially, too. Keep going after a '}' is found.
Change negative offset calculation to use CYGTLS_PADSIZE.
* init.cc (_my_oldfunc): New variable.
(threadfunc_fe): Use stored tls value for oldfunc rather than blindly writing
to the stack.
(munge_threadfunc): Set oldfunc in tls.
(dll_entry): Initialize tls allocation.
* tlsoffsets.h: Regenerate.
(alloc_stack_hard_way): Figure out where the stack lives here rather than
relying on previously filled out information which has been invalid since
1.5.19.
be used by subsequent startup functions.
(dll_crt0_0): Issue a warning if DuplicateTokenEx fails and DEBUGGING.
(dll_crt0_1): Move user_data->{resourcelocks,threadinterface} initialization
here from dll_crt0_0.
* fork.cc (frok::child): Tell wait_for_sigthread that this is fork.
(frok::parent): Only initialize start_time once. Tighten time when we're
"deimpersonated".
* sigproc.cc (signal_fixup_after_exec): Rework (futiley) sa_buf stuff. Add
debugging output.
(wait_for_sigthread): Accept an argument which illustrates whether we are
forked or not.
(wait_sig): Avoid using myself pointer.
* winsup.h ((wait_for_sigthread): Reflect change to argument.
* dcrt0.cc (dll_crt0_0): Semi-revert 2006-03-14 change which moved pinfo_init
and uinfo_init here.
(dll_crt0_1): Ditto.
(__dll_crt0): Ditto. Don't call update_envptrs here.
(dll_crt0_1): Ditto. Move wait_for_sigthread call here from dll_crt0_0.
* environ.cc (environ_init): Call it here instead.
* sigproc.cc (my_readsig): New static variable.
(wait_for_sigthread): Set up read pipe here since we are assured that we have
the proper privileges when this is called.
(talktome): Eliminate second argument since it is available as a global now.
(wait_sig): Reflect use of my_readsig.
* pinfo.cc (_pinfo::dup_proc_pipe): Reset wr_proc_pipe on failure. Return
previous pipe handle.
* pinfo.h (_pinfo::dup_proc_pipe): Reflect change to return value.
* spawn.cc (spawn_guts): Restore previous proc pipe on retry or if process
exits before synchronization.
(child_info::flag): Rename from 'straced'.
(child_info::isstraced): New function.
(child_info::iscygwin): Ditto.
(child_info_fork::handle_fork): Reparmize.
(child_info_fork::handle_failure): Ditto.
(child_info_spawn::handle_spawn): New function.
* dcrt0.cc (get_cygwin_startup_info): Use isstraced method.
(child_info_spawn::handle_spawn): Define new function from code previously in
dll_crt0_0.
(dll_crt0_0): Move spawn stuff into handle_spawn. Only call
init_console_handler for fork case.
* sigproc.cc (child_info::child_info): Set flag appropriately.
(child_info::proc_retry): Treat exit code as "funny" if it's a cygwin process.
* spawn.cc (spawn_guts): Remove commented out flag setting.
(child_info::retry): Move here from fork subclass.
(child_info::exit_code): New field.
(child_info::retry_count): Max retry count for process start.
(child_info::proc_retry): Declare new function.
(child_info_fork::retry): Move to parent.
(child_info_fork::fork_retry): Ditto.
* dcrt0.cc (child_info::fork_retry): Rename and move.
(child_info_fork::handle_failure): Move.
(dll_crt0_0): Initialize console handler based on whether we have a controlling
tty or not. Avoid nonsensical check for fork where it can never occur.
* environ.cc (set_proc_retry): Rename from set_fork_retry. Set retry_count in
child_info.
(parse_thing): Reflect above change.
* exceptions.cc (dummy_ctrl_c_handler): Remove unused variable name.
(ctrl_c_handler): Always return TRUE for the annoying CTRL_LOGOFF_EVENT.
* fhandler_termios.cc (fhandler_termios::tcsetpgrp): Remove call to
init_console_handler.
* fhandler_tty.cc (fhandler_tty_slave::open): Just call mange_console_count
here and let it decide what to do with initializing console control handling.
* fork.cc (fork_retry): Remove definition.
(frok::parent): Define static errbuf and use in error messages (not thread safe
yet). Close pi.hThread as soon as possible. Protect pi.hProcess as soon as
possible. Don't set retry_count. That happens automatically in the
constructor now. Accommodate name change from fork_retry to proc_retry.
* init.cc (dll_entry): Turn off ctrl-c handling early until we know how it is
supposed to be handled.
* pinfo.cc (_pinfo::dup_proc_pipe): Remember original proc pipe value for
failure error message. Tweak debug message slightly.
* sigproc.cc (child_info::retry_count): Define.
(child_info::child_info): Initialize retry count.
(child_info::sync): Set exit code if process dies before synchronization.
(child_info::proc_retry): Rename from child_info_fork::fork_retry. Use
previously derived exit code. Be more defensive about what is classified as an
error exit.
(child_info_fork::handle_failure): Move here from dcrt0.cc.
* spawn.cc (spawn_guts): Maintain error mode when starting new process to avoid
annoying pop ups. Move deimpersonate call within new loop. Move envblock
freeing to end. Loop if process dies prematurely with bad exit code.
* syscalls.cc (init_console_handler): Remove hopefully unneeded call to
init_console_handler.
on/off depending on whether we have allocated a console or not.
* dcrt0.cc (child_info_fork::fork_retry): Add more potential retry statuses.
(dll_crt0_0): Turn on/off console control depending on whether we have a
controlling tty or not.
* exceptions.cc (init_console_handler): Change BOOL to bool.
* fhandler_console.cc (fhandler_console::need_invisible): Cosmetic change.
* winsup.h (init_console_handler): Reflect argument type change.
* wincap.h (supports_setconsolectrlhandler_null): Remove duplicate capability
throughout.
* wincap.cc: Ditto.
* dcrt0.cc (child_info_fork::fork_retry): Define new function.
* fork.cc (frok::parent): Move retry decision into child_info_fork::fork_retry
and honor what it tells us to do.
* sigproc.cc (sig_send): Unhold signals on __SIGEXIT.
(child_info_fork::retry): New field.
* dcrt0.cc (__api_fatal_exit_val): Define.
(child_info_fork::handle_failure): Define new function.
(__api_fatal): Exit using __api_fatal_exit_val value.
* environ.cc (set_fork_retry): Set fork_retry based on CYGWIN environment
variable.
(parse_thing): Add "fork_retry" setting.
* fork.cc (fork_retry): Define.
(frok::parent): Reorganize to allow retry of failed child creation if child
signalled that it was ok to do so.
* heap.cc (heap_init): Signal parent via handle_failure when VirtualAlloc
fails.
* pinfo.h (EXITCODE_RETRY): Declare.
* sigproc.cc (child_info::sync): Properly exit with failure condition if called
for fork and didn't see subproc_ready.
* spawn.cc (spawn_guts): Use windows pid as first argument.
* winsup.h: Remove obsolete NEW_MACRO_VARARGS define.
(__api_fatal_exit_val): Declare.
(set_api_fatal_return): Define.
(in_dllentry): Declare.
* exceptions.cc (inside_kernel): Remove unneeded in_dllentry declaration.
later. Add a comment.
* fork.cc (resume_child): Make void.
(frok::parent): Only zero pi when necessary. Explicitly zero si. Set
this_errno when child_copy fails. Accommodate change to resume_child.
* sigproc.cc (sigalloc): Move global_sigs initialization here.
(sigproc_init): Move global_sigs.
(sig_send): Just check for flush signals once.
* wincap.h: Define supports_setconsolectrlhandler_null throughout.
* wincap.cc: Ditto.
(CYGTLSMAGIC): Delete.
* dcrt0.cc (dll_crt0_0): Call sigproc_init during init startup.
(_dll_crt0): Don't worry about sync_startup. Just wait for sigthread here.
* dll_init.cc (cygwin_detach_dll): Only pick up tls version of retaddr if we
have a valid tls.
* fork.cc (frok::child): Remove sigproc_init initialization since it happens
much earlier now.
* gendef: Recognize SIGFE_MAYBE.
(fefunc): Generate calls to _sigfe_maybe, if appropriate.
(_sigfe_maybe): New function.
* init.cc (search_for): Always initialize search_for, even on fork.
(calibration_thread): Delete.
(calibration_id): Delete.
(prime_threads): Delete.
(munge_threadfunc): Remove calibration_thread special case. Avoid calling
thread function if we haven't yet hit the "search_for" thread.
(dll_entry): Remove prime_threads call. Only call munge_threadfunc when
hwait_sig is active. Ditto. for _my_tls.remove ();
* sigproc.cc (hwait_sig): Make global.
(sigproc_init): Don't bother with sync_startup.
(sig_send): Treat flush as a no-op when signals are held.
(wait_sig): Cause signals to be held after fork.
* cygtls.h (_cygtls::thread_context): Declare new field.
(_cygtls::thread_id): Ditto.
(_cygtls::signal_exit): Move into this class.
(_cygtls::copy_context): Declare new function.
(_cygtls::signal_debugger): Ditto.
* cygtls.cc (_cygtls::init_thread): Fill out thread id field.
* exceptions.cc (exception): Change message when exception info is unknown.
Copy context to thread local storage.
(_cygtls::handle_exceptions): Avoid double test for fault_guarded. Reflect
move of signal_exit to _cygtls class.
(sigpacket::process): Copy context to thread local storage.
(_cygtls::signal_exit): Move to _cygtls class. Call signal_debugger to notify
debugger of exiting signal (WIP). Call stackdump here (WIP).
(_cygtls::copy_context): Define new function.
(_cygtls::signal_debugger): Ditto.
* tlsoffsets.h: Regenerate.
* include/cygwin.h (_fpstate): New internal structure.
(ucontext): Declare new structure (WIP).
(__COPY_CONTEXT_SIZE): New define.
* exceptions.cc (_cygtls::interrupt_setup): Clear "threadkill" field when there
is no sigwaiting thread.
(setup_handler): Move event handling into interrupt_setup.
* init.cc (dll_entry): Rename is_wow64_proc to wow64_test_stack_marker.
Call wincap.init here before doing anything else. Use wincap.is_wow64
to determine if we're running in a WOW64 emulator.
* mmap.cc (MapViewNT): Don't use AT_ROUND_TO_PAGE in WOW64, it's
apparently not supported.
(mmap64): Don't create mappings beyond EOF, which would need to use
AT_ROUND_TO_PAGE, on WOW64.
* wincap.cc (wincap): Throw into the .cygwin_dll_common section.
(wincapc::init): Determine if running in WOW64 and set wow_64 flag.
* wincap.h (class wincapc): Add wow64 member.
(wincapc::is_wow64): New method.
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset.
(child_info::dwProcessId): Delete.
(child_info::straced): New variable.
(child_info::handle_fork): New member function.
* dcrt0.cc (in_forkee): New global variable.
(__cygwin_user_data::forkee): Mark as obsolete.
(do_global_ctors): Use in_forkee rather than user_data->forkee.
(get_cygwin_startup_info): Ditto. Deal with new straced field to allow strace
to deal with children of attached processes.
(initial_env): Accommodate changes to strace::hello.
(child_info_fork::handle_fork): Rename from plain old 'handle_fork'. Move
alloc_stack() call elsewhere.
(dll_crt0_0): Fill out more of user_data. Reference handle_fork via fork_info.
Add some debugging output.
(_dll_crt0): Don't wait for sync thread if sync_startup is invalid. Zero
sync_startup here. Call alloc_stack() here, if appropriate.
(dll_crt0_1): Use in_forkee rather than user_data->forkee.
(dll_crt0): Ditto.
* malloc_wrapper.cc (malloc_init): Ditto.
* dll_init.cc (in_forkee): Remove local static version of this variable.
(dll_list::load_after_fork): Don't set in_forkee here.
* external.cc (cygwin_internal): Use strace method rather than accessing field
directly.
* fhandler.cc (fhandler_base::read): Ditto.
* fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Ditto.
* fork.cc (frok::parent): Invoke strace write_childpid to communicate with
potential strace.
(child_copy): Add more detail to debugging output.
* init.cc (calibration_id): New static variable.
(prime_threads): Set sync_startup to invalid handle if we already know about
thread_func_ix. Use static calibration_id to hold calibration thread id.
* munge_threadfunc (munge_threadfunc): Don't try to debug if we don't find
threadfunc_ix.
(dll_entry): Avoid calling munge_threadfunc and _cygtls::remove on non-cygwin
threads invoked during process startup.
* pinfo.cc (set_myself): Always call strace.hello here regardless of DEBUGGING.
* sigproc.cc (child_info::child_info): Remove spurious handling of dwProcessId.
Set straced as appropriate.
* spawn.cc (spawn_guts): Rename ciresrv to ch. Invoke strace write_childpid to
communicate with potential strace.
* strace.cc: Include child_info.h.
(strace::hello): Remove inited test. Use active() method to test if strace has
been activated. Handle case where we are started before
(mypid): New function.
(strace::vsprntf): Try to deal more intelligently with case where progname may
not be filled out. Put pid in parentheses if it is a windows pid rather than a
cygwin pid. myself has been filled out.
(strace::write_childpid): New function for notifying strace about the creation
of children.
(strace::vprntf): Use strace method rather than accessing field directly.
(strace_printf): Ditto.
(strace::wm): Ditto.
* winsup.h (in_forkee): Declare.
* include/sys/strace.h (strace::write_childpid): Declare new function.
(strace::attached): Define new function.
(strace::active): Ditto.
(strace::active_val): Ditto.
(_STRACE_ON): Delete.
(_STRACE_OFF): Ditto.
(define_strace0): Use strace method rather than accessing field directly.
(strace_printf_wrap): Ditto.
(strace_printf_wrap1): Ditto.
*** cygwin utils changes:
* strace.cc (nprocesses): Make static global.
(quiet): New variable.
(strace_active): Ditto.
(add_child): Increment nprocesses here. Don't add a child if it is already
added (windows bug?). Report on child if not quiet.
(get_child): Just return NULL if child not found.
(remove_child): Report on child if not quiet.
(attach_process): Don't complain if given a windows process. Use windows pid
in error.
(handle_output_debug_string): Issue error if trying to manipulate a process
that we don't know about. Handle _STRACE_CHILD_PID - attach to reported child
when we get this.
(proc_child): Move nprocesses to file scope. Report on exceptions.
(longopts): Implement "--quiet".
(opts): Implement "-q".
(main): Manipulate quiet flag.
* utils.sgml (strace): Add words describing '-q'.
(do_exit): Move minimal_printf...
* pinfo.cc (pinfo::exit): ...into here.
* strace.cc (strace::vprntf): Guarantee output to the console when
system_printf/api_fatal.
* heap.cc (heap_init): Wait a second before issuing an error when
ERROR_INVALID_ADDRESS since this is probably due to a CTRL-C handler sneaking
in, using the memory that we want to use for the heap, and, eventually exiting.
* cygheap.cc (cygheap_fixup_in_child): Accommodate new child_copy arguments.
* dcrt0.cc (dll_data_start): Move definition here from fork.
(dll_data_end): Ditto.
(dll_bss_start): Ditto.
(dll_bss_end): Ditto.
(handle_fork): New function. Called when forked to deal with fork issues and
copy data to this process from the parent.
(dll_crt0_0): Call handle_fork when _PROC_FORK condition.
(dll_crt0): Don't copy user_data when we've forked. Don't zero first element
of main_environment ever.
(cygwin_dll_init): Ditto.
* fork.cc (child_copy): Rename from fork_copy and change arguments so that each
pair of things to copy gets its own descriptor.
(frok::child): Remove fixup_mmaps_after_fork call here. Move to handle_fork in
dcrt0.cc.
(frok::parent): Use child_copy rather than fork_copy and accommodate changes in
parameters.
* exceptions.cc (setup_handler): Delay test of whether we're locked until after
GetThreadContext has been called since there are apparently cases where
SuspendThread does not cause an immediate thread suspension.
(_cygtls::handle_exceptions): New function declaration.
(_cygtls::handle_threadlist_exception): Ditto.
(_cygtls::init_exception_handler): Ditto.
(_cygtls::init_threadlist_exceptions): Remove arg from declaration.
* cygtls.cc (_cygtls::call2): Don't initialize exceptions here.
(_cygtls::init_thread): Do it here instead and use member function.
(_cygtls::handle_threadlist_exception): Move into _cygtls class.
(_cygtls::init_exception_handler): Ditto. Rely on existence of 'el' memmber in
_cygtls.
(_cygtls::init_threadlist_exceptions): Ditto.
* dcrt0.cc (dll_crt0_1): Remove exception_list definition and setting since it
now commonly resides in the tls.
* exceptions.cc (init_exception_handler): Move to cygtls.cc.
(init_exceptions): Ditto.
(rtl_unwind): New, safe wrapper function for RtlUnwind.
(_cygtls::handle_exceptions): Move to _cygtls. Call rtl_unwind to unwind
frames and eliminate copying of structures. Put address of failing instruction
in si_addr, not the address on the stack. Return 0 to indicate that we've
handled this exception.
* external.cc (cygwin_internal): Make CW_INIT_EXCEPTIONS a no-op.
* sigproc.cc (wait_sig): Accommodate argument change to
_cygtls::init_threadlist_exceptions.
* tlsoffsets.h: Regenerate.
* include/exceptions.h (exception_list): Add more stuff to the exception list.
Apparently windows needs this?
(init_exceptions): Remove bogus declaration.
* include/cygwin/signal.h (SI_USER): Redefine as zero as per SUSv3.
* thread.cc (pthread_kill): Set si_pid and si_uid.
* timer.cc (timer_thread): Set si_code to SI_TIMER.
* cygheap.cc (_csbrk): Call getpagesize instead of getshmlba.
* dcrt0.cc (dll_crt0_0): Call mmap_init.
* external.cc (cygwin_internal): Call getpagesize instead of getshmlba.
* fhandler.h (fhandler_base::mmap): Change access to prot parameter.
(fhandler_base::fixup_mmap_after_fork): Ditto.
(fhandler_disk_file::mmap): Ditto.
(fhandler_disk_file::fixup_mmap_after_fork): Ditto.
(fhandler_dev_mem::mmap): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_mem.cc (fhandler_dev_mem::write): Call getsystempagesize
instead of getpagesize.
(fhandler_dev_mem::read): Ditto.
(fhandler_dev_mem::fstat): Ditto.
(fhandler_dev_mem::mmap): Move to mmap.cc.
(fhandler_dev_mem::munmap): Ditto.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_proc.cc (format_proc_meminfo): Call getsystempagesize
instead of getpagesize.
* fhandler_process.cc (format_process_stat): Ditto.
(format_process_status): Ditto.
(get_mem_values): Ditto.
* mmap.cc: Fix formatting. Try to make more readable and modular.
Take advantage of pagesize==granularity.
(gen_protect): New static function to evaluate Windows
protection bits from POSIX protection and flags.
(gen_access): Ditto for Windows access mode.
(VirtualProt9x): Wrapper function to call VirtualProtect on 9x.
(VirtualProtNT): Ditto for NT.
(VirtualProtEx9x): Ditto for VirtualProtectEx on 9x.
(VirtualProtExNT): Ditto for NT.
(CreateMapping9x): Wrapper function for creating a mapping handle on 9x.
(CreateMappingNT): Ditto for NT.
(MapView9x): Wrapper function to map a view on 9x.
(MapViewNT): Ditto for NT.
(mmap_funcs_9x): Structure containing function pointers to wrapper
functions for 9x.
(mmap_funcs_nt): Ditto for NT.
(mmap_func): Pointer to wrapper functions used in subsequent code.
(mmap_init): Initialize mmap_func depending on OS.
(class mmap_record): Use sensible member names. Add POSIX protection
member. Drop Windows access flags member. Constify more methods.
Use accessors instead of direct member access inside of own methods.
(mmap_record::gen_protect): Class wrapper to evaluate matching
Windows protection bits.
(mmap_record::gen_access): Ditto for Windows access flags.
(mmap_record::compatible_flags): New function to check if flags are
compatible with flags of existing map.
(list::add_record): Drop offset and length arguments.
(class map): Change counters to unsigned. Match usage throughout.
(mmapped_areas): Convert from pointer to global struct.
(mmap_record::alloc_page_map): Simplify.
(mmap_record::map_pages): Ditto.
(mmap_record::fixup_page_map): Delete.
(mmap64): Simplify. Add workaround for Windows 98 bug. Fix bug on
NT that existing anonymous mappings weren't searched for a match.
(munmap): Add workaround for Windows 98 bug.
(msync): Simplify.
(mprotect): Handle existing maps correctly.
(mlock): Add local pagesize variable and enlightening comment.
(fhandler_disk_file::mmap): Main functionality now in CreateMapping/
MapView wrapper functions.
(fhandler_disk_file::fixup_mmap_after_fork): Call MapView wrapper.
(fhandler_dev_mem::mmap): Moved from fhandler_mem.cc. Simplify by
calling MapViewNT.
(fhandler_dev_mem::munmap): Moved from fhandler_mem.cc.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto. Call MapViewNT.
(fixup_mmaps_after_fork): Restructure and hopefully speed up loop for
setting protection and memory content on MAP_PRIVATE maps.
* ntdll.h (AT_ROUND_TO_PAGE): Remove define.
(AT_EXTENDABLE_FILE): Add define.
(NtCreateSection): Add prototype.
* syscalls.cc (getpagesize): Return granularity as pagesize now.
(getsystempagesize): New function to retrieve "real" pagesize.
(getshmlba): Delete since it's replaced by getpagesize now.
* wincap.h (wincaps::has_mmap_alignment_bug): New element.
* wincap.cc: Implement above element throughout.
* winsup.h (getshmlba): Drop prototype.
(getsystempagesize): Add prototype.
(mmap_init): Ditto.
* include/sys/mman.h: (Not yet) define MAP_NORESERVE.
deadlocks.
(class locked_process): Move to another header.
* sync.h (lock_process): Define here.
* cygtls.cc (_cygtls::fixup_after_fork): Reset spinning state as well as
stacklock state.
* dcrt0.cc (lock_process::locker): Define.
(dtable::lock_cs): Delete.
* dtable.cc (dtable_init): Eliminate call to init_lock().
(dtable::fixup_after_fork): Ditto.
(dtable::init_lock): Delete definition.
* dtable.h (dtable::init_lock): Delete declaration.
(dtable::lock): Use process lock rather than dtable-specific lock.
(dtable::unlock): Ditto.
* sigproc.cc (sigproc_init): Minor change to debugging output.
* times.cc (utime_worker): Use build_fh_pc rather than reinterpreting the posix
path name again. Return any error from path_conv immediately.
cygthread to handle extra argument, throughout.
* cygthread.h (cygthread::callproc): Declare new method.
(cygthread::cygthread): Add optional length argument to allow copying arguments
to executing thread.
* cygthread.cc (cygthread::callproc): Define new method.
(cygthread::stub): Use callfunc to invoke thread func to allow potentially
allocating stack memory which will be returned.
(cygthread::simplestub): Ditto.
(cygthread::cygthread): Accept arglen argument. Reset ev here prior to
activating thread. Wait for ev after activating thread if we're copying
contents to the thread. Wait until the end before setting h, to allow thread
synchronization.
(cygthread::release): Don't reset ev here. Rely on that happening the next
time the thread is activated.
* pinfo.h (commune_process): Rename declaration from _pinfo::commune_process.
* pinfo.cc (commune_process): Ditto for definition. Modify slightly to allow
running as a separate cygthread.
* sigproc.cc (child_info::sync): Always wait for both subproc_ready and any
hProcess if we have a cygwin parent.
(talktome): Change argument to be a pointer to siginfo_t. Contiguously
allocate whole siginfo_t structure + any needed extra for eventual passing to
commune_process thread.
(wait_sig): Accommodate change in talktome argument.
* pipe.cc (fhandler_pipe::fixup_after_exec): Remove debugging.
* dtable.h (class dtable): Add class process_lock as a friend.
* dcrt0.cc (get_exit_lock): Delete.
(do_exit): Use process_lock class instead of get_exit_lock.
* exceptions.cc (signal_exit): Ditto.
* pinfo.cc (pinfo::exit): Ditto.
(_pinfo::commune_process): Set process lock around this whole function.
(_pinfo::commune_request): Use process_lock rather than myself.lock.
* pinfo.h (pinfo::_lock): Delete.
(pinfo::initialize_lock): Delete.
(pinfo::lock): Delete.
(pinfo::unlock): Delete.
* winsup.h (get_exit_lock): Delete declaration.
instead.
(get_exit_lock): New function. Grabs the lock and sets initial exit_state.
* exceptions.cc (try_to_debug): Use low_priority_sleep.
(sigpacket::process): Avoid handler if this is an exec stub.
(signal_exit): Use get_exit_lock rather than manipulating the exit_lock
critical section directly.
* pinfo.cc (pinfo::exit): Ditto.
* winsup.h (get_exit_lock): Declare.
(exit_lock): Delete declaration.
(alloc_stack): Use tls stuff for stack info rather than calling VirtualQuery.
(dll_crt0_0): Initialize _impure_ptr stuff much earlier. Move
init_console_handler here.
* fork.cc (class frok): New class renamed from local fork() struct.
(stack_base): Change argument type. Use tls stuff to determine stack info
rather than calling VirtualQuery.
(frok::child): Rename from fork_child. Eliminate now unneeded arguments.
(frok::parent): Rename from fork_parent and ditto. Set error and errno as
appropriate. Fixup impersonation in cleanup, if needed. Try harder to set
errno appropriately.
(fork): Define "grouped" as a frok type. Deal with errors from fork_parent
here.
* init.cc (dll_entry): Remove init_console_handler call.
* cygtls.h (struct _cygtls::thread_handle): New field.
* dcrt0.cc (exit_lock): Remove declaration.
* winsup.h (exit_lock): Add declaration.
* exceptions.cc (sigpacket::process): Properly return after signal_exit.
* pinfo.cc (pinfo::exit): Only exit the process if _my_tls.thread_handle has
not been filled out -- which should be an impossible event.
* sigproc.cc (sigproc_terminate): Fillout _my_tls.thread_handle to provide
something for wait_sig to wait for. Use the siginfo_t version of sig_send and
fill out the tls argument with _my_tls.
(wait_sig): Wait for the thread specified in pack.tls or (for now) complain
bitterly if it doesn't exit.
pinfo::exit.
* pinfo.cc (pinfo::exit): Move sigproc_terminate later so that signals can be
processed while waiting for hExeced child.
(pinfo::maybe_set_exit_code_from_windows): Set exit code from sigExeced if it
is non-zero. Set exit_state to ES_EXEC_EXIT prior to waiting for captive
process exit code.
* exceptions.cc (sigExeced): New global variable.
(signal_exit): Remove noreturn attribute from declaration.
(signal_exit): Just terminate captive process and return if hExeced on the
theory that the exit will be subsequently handled in the main thread.
* sigproc.cc (sigproc_terminate): Eliminate test for ES_SIGPROCTERMINATE and
use ES_FINAL instead.
(sig_send): Use no_signals_available instead of duplicate test.
* winsup.h (ES_EXEC_EXIT): New enum.
(ES_SIGPROCTERMINATE): Delete.
(handle_exceptions): Use _sig_tls rather than sigtid to determine if this is
the signal thread.
(set_signal_mask): Ditto for conditionalized CGF code.
* pinfo.cc (pinfo::exit): Exit the thread if we forcefully terminated the main
thread
* sigproc.cc (sigtid): Delete.
(_sig_tls): Define.
(sig_clear): Use _sig_tls rather than sigtid to determine if this is the signal
thread.
(sig_dispatch_pending): Ditto.
(wait_sig): Set _sig_tls here.
* dcrt0.cc (do_exit): Move sigproc_terminate call later since signal handling
was still needed for subsequent stuff. Call sigproc_terminate with new
exit_state value.
* pinfo.cc (pinfo::exit): Call sigproc_terminate with new exit_state value.
* sigproc.cc (proc_terminate): Remove unnecessary (void) parameter.
(sigproc_terminate): Ditto. Add new argument to accept exit state to be set.
(wait_sig): Reorganize __SIGEXIT handling. Add more debugging output.
* winsup.h (sigproc_terminate): Declare with new exit_state argument.
(exit_states): Reorganize to reflect new exit ordering of sigproc_terminate.
appropriately.
* pinfo.cc (pinfo::exit): Always call sigproc_terminate here. Rely on
sigproc_terminate to signal signal thread to handle eventual process exit.
* sigproc.cc (no_signals_available): Change criteria for determining if this
process can handle signals to itself.
(my_sendsig): New variable. Copy of my sendsig handle.
(proc_can_be_signalled): Don't send signals if exit code is set.
(sigproc_terminate): Use and set exit_state appropriately to determine when to
do anything. Send __SIGEXIT to self to control process exit.
(sig_send): Use my_sendsig for sending signals. Don't call
proc_can_be_signalled for myself since the criteria is now different for
sending signals to myself.
(wait_sig): Copy myself->sendsig to my_sendsig for future use. Exit signal
loop when __SIGEXIT is received. Wait for main thread to exit and use its exit
status to actually exit process.
* sigproc.h (__SIGEXIT): New enum.
* dcrt0.cc (alloc_stack): Eliminate superfluous "return;".
* debug.cc (add_handle): Ditto.
* devices.in (device::parse): Ditto.
* dtable.cc (dtable::vfork_parent_restore): Ditto.
(dtable::vfork_child_fixup): Ditto.
* environ.cc (parse_options): Ditto.
* errno.cc (seterrno_from_win_error): Ditto.
* exceptions.cc (sig_handle_tty_stop): Ditto.
(set_signal_mask): Ditto.
* fhandler.cc (fhandler_base::read): Ditto.
(fhandler_base::operator delete): Ditto.
(fhandler_base::seekdir): Ditto.
(fhandler_base::rewinddir): Ditto.
* fhandler_console.cc (fhandler_console::read): Ditto.
(fhandler_console::fixup_after_exec): Ditto.
* sigproc.cc (sigproc_init): Ditto.
(sigproc_terminate): Ditto.
* devices.cc: Regenerate.
(dll_crt0_0): Move console initialization earlier.
* init.cc (dll_entry): Move console initialization here.
* exceptions.cc (init_console_handler): Fully remove any old console handler.
* spawn.cc (spawn_guts): Don't fill out windows argv if we've deduced that this
is a cygwin-using program.
(av::fixup): Always check executables to see if they are using cygwin1.dll.
Don't consider .com files to be scripts.
* hookapi.cc (rvadelta): New function.
(PEHeaderFromHModule): Simplify slightly.
(hook_or_detect_cygwin): Use passed in name argument for "HMODULE" rather than
incorrectly reading current program. Calculate delta needed to read image data
and file names if this isn't a real "HMODULE".
* fhandler_tty.cc (fhandler_tty_common::close): Rearrange the code so that the
master end of the input and output pipes is closed before signalling an EOF
event to the slave.
(fhandler_pty_master::close): Likewise.
* cygheap.cc (cmalloc): Only emit system_printf warnings on failure if
DEBUGGING.
(crealloc): Ditto.
(ccalloc): Ditto.
* dtable.cc (build_fh_name): Treat NULL return from cnew as indicative of
EMFILE condition.
(build_fh_dev): Ditto.
(dtable::dup_worker): Handle NULL return from build_fh_pc.
(dtable::vfork_child_dup): Trust dup_worker to set errno.
* fhandler.h (fhandler_base::new): Mark as nothrow.
* fhandler.cc (fhandler_base::raw_read): Ditto for debug message.
* dcrt0.cc (do_exit): Add some more synchronization tests.
* fhandler_fifo.cc (fhandler_fifo::dup): Don't duplicate a nonexistent handle.
Use derived return value rather than always retuning 0.
* fhandler_netdrive.cc (fhandler_netdrive::exists): Wnet -> WNet.
* winsup.h (exit_states): Add a couple of new exit states.
(child_info::dwProcessId): New field.
* cygheap.cc (init_cheap): Delete.
(dup_now): Ditto.
(cygheap_setup_for_child): Ditto.
(cygheap_setup_for_child_cleanup): Ditto.
(cygheap_fixup_in_child): Simplify. Use new "child_copy" function to copy heap
from parent.
(_csbrk): Don't attempt allocation if within cygheap section. Fix so that more
than one allocation will succeed.
(cygheap_init): Reset possibly-nonzero region to zero.
* cygheap.h (cygheap_setup_for_child): Delete declaration.
(cygheap_setup_for_child_cleanup): Ditto.
(cygheap_start): Define as an array.
* cygwin.sc: Modernize. Remove unneeded sections. Define cygheap here.
* dcrt0.cc (do_exit): Reflect argument change to close_all_files.
* dtable.cc (dtable::vfork_parent_restore): Ditto.
* dtable.h: Ditto.
* fhandler.h: Ditto.
* fork.cc (fork_copy): Call ReadProcessMemory if there is no thread
(indicating that we're execing).
(fork_child): Don't mess with hParent.
(fork_parent): Remove hParent stuff. It happens earlier now. Remove call to
cygheap_setup_for_child* stuff.
(fork): Put child_info_stuff in grouped structure. Issue error if parent
handle is not set.
(child_copy): New function.
* sigproc.cc (child_info::child_info): Put cygheap settings here. Set parent
handle.
(child_info::~child_info): Close parent handle if it exists.
* spawn.cc (spawn_guts): Reorganize so that ciresrv is allocated at only the
last minute so that cygheap changes are reflected. Delete cygheap_setup*
calls.
* syscalls.cc (close_all_files): Add an argument to flag when the fd entry
should be released.
* winsup.h (close_all_files): Add an argument to close_all_files declaration.
Declare child_copy.
(__main): Don't rely on atexit to run dtors.
(do_exit): Specifically call do_global_dtors here.
(cygwin_exit): Ditto.
* dll_init.cc (dll_global_dtors): Make global. Only run dtors once.
(dll_list::init): Just set flag that dtors should be run. Don't rely on
atexit.
* dll_init.h (dll_global_dtors): Declare.
* exceptions.cc (sigrelse): Define.
* path.h (is_fs_device): New method.
(is_lnk_special): Ditto.
* fhandler_disk_file.cc (fhandler_disk_file::link): Use "is_lnk_special" rather
than "is_lnk_symlink".
* syscalls.cc (rename): Ditto.
* hookapi.cc (ld_preload): Use colon as a separator rather than space.
* fhandler.h (enum change_state): Add.
(fhandler_base::status): Add a bit to has_changed flag.
(fhandler_base::has_changed): Implement with type change_state.
* fhandler.cc (fhandler_base::raw_write): Accomodate type change
of has_changed.
* fhandler_disk_file.cc )fhandler_disk_file::touch_ctime): Also
touch modification time if has_changed == data_changed.
(fhandler_disk_file::fchmod): Also open on 9x, otherwise we can't
touch ctime. Accomodate type change of has_changed.
(fhandler_disk_file::fchown): Accomodate type change of has_changed.
(fhandler_disk_file::facl): Ditto.
(fhandler_disk_file::ftruncate): Ditto.
(fhandler_disk_file::link): Ditto.
(fhandler_base::open_fs): Ditto.
* cygheap.h (cygheap_user::curr_primary_token): New member.
(cygheap_user::primary_token): New method.
(cygheap_user::deimpersonate): Always revert to processes'
impersonation token.
(cygheap_user::reimpersonate): Set processes' or setuid token as
necessary.
(cygheap_user::has_impersonation_tokens): Look for curr_primary_token
value.
(cygheap_user::close_impersonation_tokens): Close curr_primary_token
here if necessary. Don't reset token values to NO_IMPERSONATION since
that's done in uinfo_init anyway.
(init_cygheap::luid): New LUID array keeping privilege LUIDs.
* cygtls.cc (_cygtls::init_thread): Call cygheap->user.reimpersonate.
* dcrt0.cc (hProcToken): New global variable to keep process token.
(hProcImpToken): Ditto for process impersonation token.
(dll_crt0_0): Open process token here once. Duplicate to create
hProcImpToken.
(dll_crt0_1): Call set_cygwin_privileges.
* environ.cc (allow_ntea): Drop duplicate declaration.
(allow_smbntsec): Ditto.
(set_traverse): Only set allow_traverse here.
(environ_init): Ditto.
* fhandler_disk_file.cc (fhandler_disk_file::fchmod): Drop call to
enable_restore_privilege.
(fhandler_disk_file::fchown): Ditto.
(fhandler_disk_file::facl): Ditto.
* fork.cc (fork_child): Move call to cygheap->user.reimpersonate after
syn with parent. Call set_cygwin_privileges.
* grp.cc (internal_getgroups): Use hProcImpToken instead of opening
process token.
* path.cc (fs_info::update): Bypass traverse checking when retrieving
volume information using push/pop_thread_privileges.
* registry.cc (load_registry_hive): Drop setting restore privilege
since it's already set if available.
* sec_helper.cc: Include cygtls.h.
(cygpriv): Privilege string array.
(privilege_luid): New function, evaluate LUID from cygpriv_idx.
(privilege_luid_by_name): New function, evaluate LUID from privilege
string.
(privilege_name): New function, evaluate privilege string from
cygpriv_idx.
(set_privilege): New static function called by set_process_privilege
and set_thread_privilege. Call privilege_luid to get privilege LUID.
Fix bug in return value evaluation. Improve debug output.
(set_cygwin_privileges): New function.
(set_process_privilege): Remove.
(enable_restore_privilege): Remove.
* security.cc (allow_traverse): New global variable.
(sys_privs): Change type to cygpriv_idx and store privilege indices
instead of strings.
(SYSTEM_PRIVILEGES_COUNT): Renamed from SYSTEM_PERMISSION_COUNT.
(get_system_priv_list): Don't use numerical constant in malloc call.
Use privilege_luid to get privilege LUIDs.
(get_priv_list): Call privilege_luid_by_name to get LUIDs. Improve
inner privilege LUID comparison loop.
(create_token): Enable create token privilege using
push/pop_self_privileges. Use hProcToken instead of opening process
token. Use default DACL when duplicating token.
(subauth): Enable tcb privilege using push/pop_self_privileges.
Use sec_none instead of homw made security attributes when duplicating
token.
(check_file_access): Don't duplicate access token, use active
impersonation token as is.
* security.h (enum cygpriv_idx): New enumeration type enumerating
possible privileges.
(privilege_luid): Declare new function.
(privilege_luid_by_name): Ditto.
(privilege_name): Ditto.
(allow_traverse): Declare.
(set_privilege): Declare function.
(set_process_privilege): Define as macro.
(enable_restore_privilege): Remove declaration.
(_push_thread_privilege): Define macro.
(push_thread_privilege): Ditto.
(pop_thread_privilege): Ditto.
(pop_self_privilege): Ditto.
* spawn.cc (spawn_guts): Use cygheap->user.primary_token instead of
cygheap->user.token.
* syscalls.cc (statvfs): Bypass traverse checking when retrieving
volume information using push/pop_thread_privileges. Rearrange code
to simplify push/pop bracketing.
(seteuid32): Use hProcToken instead of opening process token. Call
cygheap->user.deimpersonate instead of RevertToSelf. Create
impersonation token from primary internal or external token. Set
cygheap->user.curr_primary_token and cygheap->user.current_token
privileges once here. Drop "failed" and "failed_ptok" labels.
Drop setting DefaultDacl of process token.
(setegid32): Use hProcToken and hProcImpToken instead of opening
process token. Always reimpersonate afterwards.
* uinfo.cc (cygheap_user::init): Use hProcToken instead of opening
process token.
(internal_getlogin): Ditto. Set hProcImpToken, too.
(uinfo_init): Initialize cygheap->user.curr_primary_token.
* winsup.h (hProcToken): Declare.
(hProcImpToken): Declare.
* sync.h (locker): New, currently unused class.
(muto::init): Eliminate.
* sync.cc (muto::init): Ditto.
(muto::init): Eliminate critical section lock and instead use name as a guard
to prevent against multiple attempts to initialize the same muto.
* pinfo.cc (pinfo::init): Set myself procinfo when not execing and pid matches
windows pid or cygwin pid.
(pinfo::exit): Move here from _pinfo::exit.
* sigproc.cc (child_info::sync): Use new function to set exitcode and
process_state.
* pinfo.cc (_pinfo::exit): Ditto.
(proc_waiter): Ditto.
(_pinfo::set_exit_state): Define new function.
(_pinfo::dup_proc_pipe): Close handle when there is no parent process around to
care about the exit value.
* dcrt0.cc (dll_crt0_0): Move subproc_ready synchronization later to make sure
that myself is still mapped in parent.
(do_exit): Reflect movement to pinfo::exit.
(__api_fatal): Ditto.
* exceptions.cc (signal_exit): Ditto.
* errno.cc (errmap): Map PROC_NOT_FOUND.
* init.cc (dll_entry): Release myself before exiting.
* sigproc.cc (proc_can_be_signalled): Set errno appropriately.
(sig_send): Ditto. Also remove ill-advised test for !myself->sendsig since
this is an indication of a process which is still initializating -- it is not
an error.
(child_info::sync): Don't set exitcode here. Assume that will happen in
proc_waiter, if necessary.
* spawn.cc (spawn_guts): Delay "wait_for_myself" logic until later. Don't wait
at all if the process has already exited. Reflect movement to pinfo::exit.
talk about a "version" when it's not a version.
(dll_crt0_0): Change info passed to multiple_cygwin_problem to be a little more
precise.
* shared.cc (user_shared_initialize): Ditto.
(shared_info::initialize): Ditto.
(proc_subproc): Don't mess with pinfo if it's myself.
* child_info.h (child_info_types): Label enum for _PROC constants.
(child_info::child_info): New constructor.
(child_info::~child_info): New destructor.
(child_info::sync): Declare new function.
(child_info_fork::child_info_fork): New constructor.
(child_info_spawn::child_info_spawn): Remove old constructor.
(child_info_spawn::child_info_spawn): New constructor.
* dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed
in child_info. Signal readiness to parent when not forking (and not spawning).
* fork.cc (sync_with_child): Delete.
(resume_child): Remove extra argument.
(sync_with_parent): Use child_info method to sync with parent.
(fork_child): Don't close fork_info->subproc_ready since that is now handled by
the destructor.
(fork_parent): Remove subproc_ready stuff. Use child_info sync method for
waiting.. Set start time here for child. Rename "forked" to "child".
(fork): Check ch.subproc_ready for validity here.
* pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be
staying around to handle non-cygwin captive process.
(_pinfo::exec_dwProcessId): Ditto.
(_pinfo::_lock): Renamed from lock.
(_pinfo::lock): New method.
(_pinfo::unlock): Ditto.
(_pinfo::initialize_lock): Ditto.
* pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock.
Set "exec" fields in _pinfo to zero to indicate that we've started
successfully. Set start time here when appropriate.
(_pinfo::commune_send): Use pinfo lock/unlock methods.
(proc_waiter): Remove special case for non-cywin processes. Reinstitute
handling for PID_NOCLDSTOP.
* sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is
filled.
(sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo
sendsig never materializes.
(child_info::child_info): New constructor, renamed from init_child_info.
Zeroes child_info structure and sets appropriate fields in structure based on
chtype.
(child_info::~child_info): New destructor. Closes subproc_ready if it exists.
(child_info_fork::child_info_fork): New constructor.
(child_info_spawn::child_info_spawn): New constructor.
(child_info::ready): New function. Signals parent when child is ready.
(child_info::sync): New function. Wait for child to signal us or process to
die.
(remove_proc): Remove closing of hProcess since this should now be handled
shortly after process creation.
* spawn.cc (spawn_guts): Use child_info_spawn constructor rather than
init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo.
Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv.
Revert to previous determination on whether to start a process in suspended
mode. Remove reparenting stuff. Just keep a stub around if starting a
non-cygwin process.
* dcrt0.cc (dll_crt0_0): Remove hexec_proc stuff.
* fork.cc (fork_child): Remove call to pinfo_fixup_after_fork.
* pinfo.cc (set_myself): Close and zero pid_handle if set.
(pinfo_fixup_after_fork): Delete.
(proc_waiter): Don't close vchild.hProcess here. Do that when we are remove
the vchild from procs. Save hProcess as pid_handle only on first reparent
operation.
(pinfo::wait): Don't set pid_handle here.
(pinfo::alert_parent): Always try to send signal. If unsuccessful then close
and zero wr_proc_pipe.
* pinfo.h (pinfo::pinfo): Make sure that appropriate parts of the class are
zeroed on construction.
(pinfo::alert_parent): Take char argument.
(pinfo_fixup_after_fork): Delete declaration.
(hexec_proc): Ditto.
* sigproc.cc (remove_proc): Close pid_handle and hProcess if appropriate.
* spawn.cc (spawn_guts): Set cygheap->pid_handle on first exec.
* cygheap.h (init_cygheap::pid_handle): New element.
* pinfo.cc (set_myself): Clear previously existing cygheap->pid_handle when a
new process has been started.
(pinfo::wait): Make sure that a handle to the newly forked/spawned process is
kept around so that the pid will not be reused.
* pinfo.h (_pinfo::pid_handle): Move.
(pinfo::pid_handle): to here.
* spawn.cc (spawn_guts): Create a pid_handle in cygheap prior to spawning to
ensure that the pid does not get reused during the lifetime of the "cygwin
pid".
* pinfo.h (pinfo::alert_parent): New function.
* exceptions.cc (sig_handle_tty_stop): Use alert_parent to send "signals" to
parent.
* fork.cc (fork_parent): Don't close pi.hProcess. Let the waiter thread do
that.
* pinfo.cc (proc_waiter): Detect case where process exits without setting the
exit code and use value from GetExitCodeProcess. Reluctantly implement
__SIGREPARENT.
(pinfo::alert_parent): Define.
* sigproc.h (__SIGREPARENT): New enum.
* spawn.cc (spawn_guts): Send reparent signal to parent on exec. Always create
process in suspended state to avoid races. Remove cygthread.h in favor of
cygtls.h throughout since cygtls now includes cygthread.h. Eliminate
ppid_handle usage throughout.
* child_info.h: Regenerate magic number
(child_info): Remove pppid_handle.
* cygthread.h (cygthread::release): New method. Frees thread without waiting.
* cygthread.cc (cygthread::stub): Set _ctinfo in _mytls to point to information
for executing thread. Don't call SetEvent if thread is no longer in use.
(cygthread::simplestub): Ditto.
* cygtls.h (_cygtls::_ctinfo): New element contains pointer to information
about executing cygthread, if any.
* dcrt0.cc: Remove last vestiges of per_thread stuff.
(dll_crt0_0): Ditto. Remove accommodation for ppid_handle.
(do_exit): Remove obsolete reparenting test.
(_exit): Exit with a more SUSv3-like exit value.
* dtable.cc (dtable::stdio_init): Check for myself->cygstarted rather than
myself->ppid_handle to see if we were started by a cygwin process.
* exceptions.cc (open_stackdumpfile): Ditto.
(handle_exceptions): Ditto.
(ctrl_c_handler): Ditto.
(sig_handle_tty_stop): Ditto. Let parent send signal to itself on STOP.
(sigpacket::process): Comment out vfork test.
(signal_exit): Use more SUSv3-like exit value on signal.
* external.cc (fillout_pinfo): Don't set hProcess.
* fork.cc: Remove VFORK cruft.
(per_thread::set): Delete.
(fork_child): Remove perthread stuff.
(fork_parent): Remove obsolete subproc_init. Accommodate new method for
tracking subprocesses.
* pinfo.cc (set_myself): Accommodate new pinfo/_pinfo layout. Set some things
here that used to be set in wait_sig.
(_pinfo::exit): Set exitcode here. Close process pipe.
(_pinfo::commune_send): Accommodeate new pinfo/_pinfo layout.
(proc_waiter): New function. Waits, in a thread for subprocess to go away.
(pinfo::wait): New function. Initialization for proc_waiter.
* pinfo.h (_pinfo::exitcode): New element.
(_pinfo::cygstarted): Ditto.
(_pinfo::wr_proc_pipe): Ditto.
(_pinfo::ppid_handle): Delete.
(_pinfo::hProcess): Delete.
(_pinfo::lock): Delete.
(pinfo::hProcess): New element.
(pinfo::lock): Ditto.
(pinfo::wait): Declare new function.
(pinfo::preserve): Define new function.
* sigproc.cc: Remove old stuff from wait_subproc thread based method.
(zombies): Remove.
(procs): New.
(my_parent_is_alive): Just check that the parent pid exists.
(mychild): Just use pinfo methods to determine if child is mine.
(proc_subproc): Revamp PROC_ADDCHILD to use pinfo::wait. Remove
PROC_CHILDTERMINATED logic. Use different method to remove processes from list
when SIGCHLD == SIG_IGN.
(proc_terminate): Gut.
(subproc_init): Delete.
(init_child_info): Remove setting of pppid_handle.
(checkstate): Revamp to only scan procs array.
(remove_proc): Rename from remove_zombie. Don't close hProcess or pid_handle.
Don't release memory if it's myself.
(stopped_or_terminated): Change logic to handle new consolidated proc/zombie
array.
(wait_subproc): Delete.
* sigproc.h: Remove obsolete EXIT_* defines.
(subproc_init): Remove declaration.
* spawn.cc (spawn_guts): Remove reparenting stuff. Use standard wait logic to
wait for child if started from a non-cygwin process.
* tlsoffsets.h: Regenerate.
* tty.cc (tty_init): Check for myself->cygstarted rather than
myself->ppid_handle to see if we were started by a cygwin process.
* include/sys/signal.h (external_pinfo::exitcode): Replace hProcess.
* include/sys/wait.h (WCOREDUMP): Define.
* fhandler_tty.cc (fhandler_tty_slave::read): Add debugging output for timeout
case.
* signal.cc (abort): Flag that we are exiting with the ABORT signal.
Corinna Vinschen
Christopher Faylor