* 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.
starting.
* child_info.h (init_child_info): Remove pid argument from declaration.
* cygheap.h (init_cygheap::pid): New element.
* dcrt0.cc (dll_crt0_0): Eliminate handling of now-noexistent cygpid parameter
in child_info struct. Set forkee to 'true' rather than cygpid since the pid
value was never used.
(dll_crt0_1): Ditto.
(_dll_crt0): Ditto.
* fork.cc (fork_child): Don't wait for sigthread. This is handled in the fork
call now.
(fork_parent): Remove obsolete pid argument from init_child_info call. Don't
do anything special with cygpid when DEBUGGING.
(fork): Delay all signals during fork.
(fork_init): Don't do anything special when DEBUGGING.
* pinfo.cc (set_myself): Remove pid parameter. Use new pid field in cygheap.
(pinfo_init): Don't pass pid argument to set_myself.
* sigproc.cc (sig_send): Wait for dwProcessId to be non-zero as well as
sendsig.
(init_child_info): Eliminate handling of pid.
(wait_sig): Implement method to temporarily hold off sending signals.
* sigproc.h (__SIGHOLD): New enum.
(__SIGNOHOLD): Ditto.
* spawn.cc (spawn_guts): Remove obsolete pid argument from init_child_info
call.
* pinfo.cc (pinfo::init): Don't consider MapViewOfFileEx error to be fatal if
exiting.
* pinfo.h (pinfo::init): Eliminate default argument and supply the argument in
the one case that needed it.
(_cygtls::wq): Declare.
* cygtls.cc (_cygtls::fixup_after_fork): Clear wq.thread_ev to avoid using an
invalid event handle in forked process.
* dcrt0.cc (waitq_storage): Delete.
(threadstuff): Remove waitq_storage.
* perthread.h (per_thread_waitq): Delete.
(waitq_storage): Delete declaration.
* sigproc.cc (sigproc_init): Remove perthread waitq consideration.
* sigproc.h (waitq): Delete declaration.
* wait.cc (wait4): Use _my_tls waitq structure rather than per_thread.
* cygtls.h (_cygtls::newmask): Delete member.
(_cygtls::deltamask): New member.
* gendef (_sigdelayed): Replace the call to set_process_mask by a call to
set_process_mask_delta.
* exceptions.cc (handle_sigsuspend): Do not filter tempmask. Or
SIG_NONMASKABLE in deltamask as a flag.
(_cygtls::interrupt_setup): Set deltamask only.
(set_process_mask_delta): New function.
(_cygtls::call_signal_handler): Replace the first call to set_process_mask by a
call to set_process_mask_delta.
* tlsoffsets.h: Regenerate.
a fork from a non-main thread.
* dcrt0.cc (initial_env): Eliminate parameter and just send DebugBreak when
appropriate.
(dll_crt0_0): Reflect parameter change to initial_env.
(dll_crt0_1): Don't call initial_env.
* cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now.
(_cygtls::push): Make second argument mandatory.
(_cygtls::fixup_after_fork): Declare new function.
(_cygtls::lock): Ditto.
* cygtls.cc (_cygtls::fixup_after_fork): Define new function.
* dcrt0.cc (cygwin_finished_initializing): Define as bool.
(alloc_stack): Use _tlstop rather than arbitrary variable in probably vain
attempt to avoid strange fork problem on CTRL-C.
(dll_crt0_0): Remove obsolete winpids::init call.
* dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to
initializing.
* winsup.h (cygwin_finished_initializing): Declare as bool.
* exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to
determine how to handle exception during process startup.
(_cygtls::call_signal_handler): Rename from call_signal_handler_now.
(_cygtls::interrupt_now): Fill in second argument to push.
(signal_fixup_after_fork): Eliminate.
(setup_handler): Initialize locked to avoid potential inappropriate unlock.
Resume thread if it has acquired the stack lock.
(ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished
initializing.
* fork.cc (sync_with_child): Don't call abort since it can cause exit
deadlocks.
(sync_with_child): Change debugging output slightly.
(fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup
and explicitly call sigproc_init.
(fork_parent): Release malloc lock on fork failure.
(vfork): Call signal handler via _my_tls.
* sigproc.cc (sig_send): Ditto.
* syscalls.cc (readv): Ditto.
* termios.cc (tcsetattr): Ditto.
* wait.cc (wait4): Ditto.
* signal.cc (nanosleep): Ditto.
(abort): Ditto.
(kill_pgrp): Avoid killing self if exiting.
* sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread
check.
* gendef (_sigfe): Be more agressive in protecting stack pointer from other
access by signal thread.
(_cygtls::locked): Define new function.
(_sigbe): Ditto.
(_cygtls::pop): Protect edx.
(_cygtls::lock): Use guaranteed method to set eax to 1.
(longjmp): Aggressively protect signal stack.
* miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0.
* pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect
simultaneous access to the pids list since there are pathological conditions
which can cause malloc to call winpid.
(winpids::init): Eliminate.
* pinfo.h (winpids::cs): Eliminate declaration.
* pinfo.h (winpids::init): Eliminate definition.
(well_known_*_sid): Change type to cygpsid.
(cygsid::init): Delete declaration.
* sec_helper.cc (well_known_*_sid): Define using above SID macro.
(cygsid::init): Delete.
* dcrt0.cc (dll_crt0_0): Do not call cygsid::init.
* security.cc (get_user_local_groups): Change the second argument type
to cygpsid.
initialization.
* dcrt0.cc (initial_env): Can it really be true that XP doesn't allow attaching
a debugger during DLL attach? Add temporary workaround.
(dll_crt0_0): Ensure that _impure_ptr stdio is initialized before any threads.
(dll_crt0_1): Move _impure_ptr initialization to dll_crt0_0.
* exceptions.cc (try_to_debug): Reinstate old method for looping while
debugging.
* syscalls.cc (_cygwin_istext_for_stdio): Regularize debugging output. Remove
hopefully extraneous check.
(setmode_helper): Add debugging output for improbable case. Use "binary"
rather "raw" for consistency.
we're not closing what we think we're closing.
(sig_send): Improve debugging when exiting due to no_signals_available.
* wincap.h (wincaps::cant_debug_dll_entry): New element.
* wincap.cc: Implement above element throughout.
* dcrt0.cc (initial_env): Accommodate changes necessary to allow initial
debugging for systems which do not allow debugging in dll_entry.
(dll_crt0_0): Add initial_env call back here.
* Makefile.in (install-man): Use mandir as target for installation.
* include/cygwin/version.h: Bump DLL minor number to 7 (should have been done
earlier).
* cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create,
timer_delete, timer_settime.
* include/cygwin/version.h: Reflect above additions.
* fork.cc (fork_child): Call fixup_timers_after_fork.
* signal.cc (sigwait): Remove unused variable.
* timer.cc: New file.
(clock_gettime): Define new function.
(timer_tracker): Define new struct used by timer functions.
(timer_tracker::timer_tracker): New function.
(to_us): New function.
(timer_thread): New function.
(timer_tracker::settime): New function.
(timer_create): New function.
(timer_settime): New function.
(timer_delete): New function.
(fixup_timers_after_fork): New function.
* cygthread.cc: Bump thread count.
* signal.cc (sigwaitinfo): Define new function.
(sigwait): Redefine based on sigwaitinfo.
* include/cygwin/signal.h (sigwaitinfo): Declare.
(sigwait): Ditto.
* dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when
ctty == ctty_on_hold.
* cygtls.h (_threadinfo::threadkill): New element.
(_threadinfo::set_threadkill): Declare new function.
(_threadinfo::reset_threadkill): Declare new function.
* dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to
running process with #(*& Windows Me/9x.
(initial_env): Try to initialize strace if uninitialized.
* gendef: Don't zero signal if threadkill is set since that will happen in the
called function.
* signal.cc (sigwait): Ensure cleanup in error conditions.
* sigproc.cc (sig_send): Clear packet mask storage.
(wait_subproc): Fill in child exit code in siginfo_t structure.
* thread.cc (pthread_kill): Set threadkill flag.
* tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal
information for "kernel" signals.
* cygtls.h (_threadinfo::set_siginfo): Declare new function.
* cygtls.cc (_threadinfo::set_siginfo): Define new function.
* dcrt0.cc (do_exit): Accommodate siginfo_t considerations.
* exceptions.cc (handle_exceptions): Ditto.
(sig_handle_tty_stop): Ditto.
(ctrl_c_handler): Use killsys() to send signal.
(sigpacket::process): Rename from sig_handle. Use siginfo_t field from
sigpacket for everything.
(tty_min::kill_pgrp): Accommodate siginfo_t considerations.
(fhandler_termios::bg_check): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal.
* signal.cc (kill_worker): Rewrite to use siginfo_t second argument.
(kill_pgrp): Ditto.
(kill0): Define new function pulled from kill().
(kill): Rewrite as frontend to kill0.
(killsys): Define new function.
* sigproc.cc (sigelem): Eliminate.
(sigpacket): Move to sigproc.h. Subsume sigelem.
(pending_signals): Use sigpacket rather than sigelem for everything.
(sig_clear): Ditto.
(wait_sig): Ditto.
(sig_send): Rewrite to use siginfo_t argument.
(sig_send): New function wratpper to sig_send with siginfo_t argument.
(wait_subproc): Accommodate siginfo_t considerations.
* thread.cc (pthread_kill): Ditto.
* sigproc.h (sigpacket): Move here.
(sigpacket::process): Declare "new" function.
(sig_handle): Eliminate declaration.
(sig_send): Declare with new paramaters.
(killsys): Declare new function.
(kill_pgrp): Declare.
* winsup.h: Move some signal-specific stuff to sigproc.h.
* include/cygwin/signal.h: Tweak some siginfo_t stuff.
compiler bug.
* autoload.cc (TryEnterCriticalSection): Remove.
* dcrt0.cc (dll_crt0_0): Delete inappropriate setting of _my_tls.stackptr to
NULL since it has really bad consequences. Make 'si' an automatic variable.
* cygtls.cc (_threadinfo::init_thread): Correct thinko which caused thread list
to be allocated every time.
* cygtls.h (CYGTLS_PADSIZE): Define as const int.
* sync.h: Make multiple inclusion safe.
(muto::next): Eliminate.
(muto::exiting_thread): New variable.
(muto::set_exiting_thread): New function.
(new_muto): Change to use different section for mutos since c++ give
inexplicable warning in some cases otherwise.
(new_muto1): Ditto.
* dcrt0.cc (do_exit): Call muto::set_exiting_thread here.
* sync.cc (muto_start): Eliminate.
(muto::acquire): Always give exiting thread a lock. Never give thread a lock
if exiting.
(muto::release): Ditto for releasing.
* dtable.cc (dtable::init_lock): Unline function and define here.
* dtable.h (lock_cs): Define as a muto since critical sections seem to work
oddly on Windows Me.
(lock): Accommodate switch to muto.
(unlock): Ditto.
* exceptions.cc (setup_handler): Don't worry about acquiring mutos since that
hasn't mattered for a long time.
(signal_exit): Ditto: muto stuff will be handled automatically on exit now.
* Makefile.in (DLL_IMPORTS): Link advapi32 to ensure proper DLL initialization.
* autoload.cc (RegCloseKey): Arbitrarily choose this function as a "seed" to
pull the advapi32 link library in. So, comment out the autoloading.
* cygtls.cc (_threadinfo::init_thread): Just clear CYGTLS_PADSIZE.
(_threadinfo::remove): Add debugging.
(_threadinfo::find_tls): Ditto.
* cygtls.h (_threadinfo::padding): Make zero length (for now?).
* dcrt0.cc (dll_crt0_0): Move more initialization here from dll_crt0_1.
(dll_crt0_1): See above.
* dtable.h (dtable::lock): Remove commented out critical section locking.
* dtable.h (dtable::init_lock): Remove commented out critical section locking.
* dtable.h (dtable::unlock): Remove commented out critical section locking.
* exceptions.cc (interruptible): bool'ize.
* init.cc (threadfunc_fe): Revert to storing threadfunc at stack bottom.
(munge_threadfunc): Ditto. Avoid adding overhead to calibration_thread.
(prime_threads): Don't initialize tls stuff.
(dll_entry): Make minor change to initialization order.
* tlsoffsets.h: Regenerate.
* sigproc.cc (wait_sig): Add sanity check for end of process thread exit.
* select.h: Make minor formatting change.
* Makefile.in: Add still more -fomit-frame-pointer functions.
* dtable.h (dtable::lock): New function.
(dtable::unlock): New function.
(dtable::init_lock): New function.
* cygheap.h (HEAP_TLS): Declare new enum value.
(init_cygheap::threadlist): Declare new array.
(init_cygheap::sthreads): Declare new variable.
(cygheap_fdmanip::~cygheap_fdmanip): Use new dtable lock/unlock functions.
(cygheap_fdnew::cygheap_fdnew): Ditto.
(cygheap_fdget::cygheap_fdget): Ditto.
* dtable.cc (dtable_init): Initialize fdtab critical section.
(dtable::fixup_after_fork): Ditto.
(dtable::fixup_after_exec): Ditto.
(dtable::dup2): Use lock/unlock calls to protect access to fdtab.
(dtable::find_fifo): Ditto.
(dtable::fixup_before_fork): Ditto.
(dtable::fixup_before_exec): Ditto.
(dtable::set_file_pointers_for_exec): Ditto.
(dtable::vfork_child_dup): Ditto.
(dtable::vfork_parent_restore): Ditto.
* syscalls.cc (close_all_files): Ditto.
* sync.h (muto::acquired): Declare new function.
(new_muto1): Declare new macro used to specify name of muto storage.
* sync.cc (muto::acquired): Define new function.
* cygthread.cc (cygthread::stub): Remove signal chain removal call since it is
handled during initialization now.
* cygthread.cc (cygthread::simplestub): Remove signal chain removal call since
it is handled during initialization now.
* cygtls.cc (sentry): New class used for locking. Use throughout.
(_threadinfo::reset_exception): Don't pop stack.
(_threadinfo::find_tls): Move from exceptions.cc.
(_threadinfo::init_thread): Initialize array of threads rather than linked
list. Take second argument indicating thread function for this thread.
(_threadinfo::remove): Search thread array rather than linked list. Use sentry
to lock. Only unlock if we got the lock.
(_threadinfo::find_tls): Ditto for first two.
(handle_threadlist_exception): Handle exceptions when manipulating the thread
list in case of premature thread termination.
(_threadinfo::init_threadlist_exceptions): Ditto.
* cygtls.h (TLS_STACK_SIZE): Decrease size.
(_threadinfo::padding): Add element to avoid overwriting lower part of stack.
(_threadinfo::remove): Add a "wait" argument to control how long we wait for a
lock before removing.
* exceptions.cc (init_exception_handler): Make global. Take argument to
control exception handler being set.
(ctrl_c_handler): Wait forever when removing self from signal chain.
(_threadinfo::find_tls): Move to cygtls.cc.
(sig_handle): Reorganize detection for thread-specific signals.
* heap.cc (heap_init): Rework slightly. Make fatal error more verbose. Remove
malloc initialization since it can't happen during dll attach.
* init.cc (search_for): Move address to search for on stack here.
(threadfunc_ix): Ditto for stack offset. Make shared so that stack walk
potentially only has to be done once when cygwin processes are running.
(threadfunc_fe): Use standard tls to store thread function (may change back
later).
(calibration_thread): New function. Potentially called to find threadfunc_ix.
(munge_threadfunc): Search for "search_for" value on stack. Output warning
when thread func not found on stack. Use standard tls to store thread
function.
(prime_threads): New function. Called to prime thread front end.
(dll_entry): Call dll_crt0_0 here when DLL_PROCESS_ATTACH. Call prime_threads
here. Try to remove thread from signal list here.
* sigproc.cc (wait_sig): Initialize threadlist exception stuff here.
* thread.cc (pthread::exit): Pass argument to signal list remove function.
* thread.h: Remove obsolete *ResourceLock defines.
* tlsoffsets.h: Regenerate.
* winsup.h (spf): Define temporary debug macro to be deleted later.
* dcrt0.cc (dll_crt0_0): New function, called during DLL initialization.
Mainly consists of code pulled from dll_crt0_1.
(dll_crt0_1): See above.
(_dll_crt0): Wait for initial calibration thread to complete, if appropriate.
Move some stuff to dll_crt0_0.
(initialize_main_tls): Accommodate argument change to
_thread_info::init_thread.
* fork.cc (fork_child): Ditto.
(sync_with_child): Fix debug message.
* external.cc (cygwin_internal): Remove special considerations for
uninitialized dll since initialization happens during dll attach now.
* dlfcn.cc (dlopen): Remove obsolete *ResourceLock calls.
(dlclose): Ditto.
* cygheap.h (init_cygheap::close_ctty): Declare new function.
* cygheap.cc (init_cygheap::close_ctty): Define new function.
* syscalls.cc (close_all_files): Use close_ctty.
(setsid): Ditto.
* cygthread.cc (cygthread::stub): Remove exception initialization.
* cygthread.cc (cygthread::stub): Remove exception initialization.
(cygthread::simplestub): Ditto.
* thread.cc (pthread::thread_init_wrapper): Ditto.
* cygtls.cc (_last_thread): Make static.
(_threadinfo::call2): Initialize exception handler here.
(_threadinfo::find_tls): Move here.
* exceptions.cc (_threadinfo::find_tls): Move.
* dcrt0.cc (__api_fatal): Add prefix info to message here rather than including
it in every call to function.
* winsup.h (api_fatal): Accommodate above change.
* debug.cc (add_handle): Don't do anything if cygheap not around.
(mark_closed): Ditto.
* dll_init.cc (dll_list::detach): Fix debug output.
* fork.cc (sync_with_child): Ditto.
(vfork): Improve debug output.
* heap.cc (heap_init): Ditto.
* exceptions.cc (try_to_debug): Clarify message when debugger attaches.
Christopher Faylor
Corinna Vinschen