essentially guarded by thread-specific signal_arrived.
* exceptions.cc (_cygtls::handle_SIGCONT): Simplify. Eliminate lock/unlock
since code is guarded by signal_arrived.
code if mandatory locking is used on this descriptor. Explain why.
(fhandler_disk_file::pwrite): Ditto.
* posix.sgml (std-notes): Extend description of file locking.
sig_handle_tty_stop to wake up. Make sure to unlock before calling
yield to avoid starvation of sig_handle_tty_stop. Add comments.
* miscfuncs.cc (yield): Explain why yield should never be called under
_cygtls::lock conditions. Call SleepEx with 1ms timeout. Explain why.
Include Makefile.dep last.
(Makefile.dep): Run xidepend within source dir. Temporarily drop
faq.xml from dependencies.
* xidepend: Fix creating base filename to accommodate VPATH.
accommodate process with all runtime loaded DLLs already dlclosed
at fork time.
* gendef (_sigfe_maybe): Fix code handling early return if we don't
have a tls, broken on 2013-05-21.
using wide chars to make sure native chars don't get scrambled.
* environ.h (build_env): Fix formatting in declaration.
* pinfo.cc (pinfo::status_exit): Handle STATUS_NO_MEMORY. Explain why.
stacksize to SIZE_T. Cast to SIZE_T in pointer arithmetic. Slightly
enhance output in case of a fatal error.
* fork.cc (frok::parent): Always set ch.stackaddr to DeallocationStack
value of current thread to help stack reservation in
child_info_fork::alloc_stack_hard_way along. Simplify subsequent code
storing stack values in ch. Print guardsize in hex, too.
winsymliks:nativestrict option. Strip out description of symlink types
and refer to new pathnames-symlinks section.
* highlights.xml (ov-hi-files): Rip out most of symlink description and
refer to new pathnames-symlinks section instead.
* new-features.xml (ov-new1.7.19): Add CYGWIN=winsymlinks:nativestrict.
* pathnames.xml (pathnames-symlinks): New section describing symbolic
link handling.
option. On pre-Vista warn the user if the "winsymlinks:native*" option
is set.
* globals.cc (enum winsym_t): Add WSYM_nativestrict.
* path.cc (symlink_native): Don't create native symlink if target
does not exist. Explain why. Improve comments.
(symlink_worker): Change AFS symlink handling to WSYM_nativestrict.
Handle WSYM_nativestrict throughout. Change condition for bail out
to wsym_type == WSYM_nativestrict. Add comment. Fix formatting.
* shared_info.h (CURR_USER_MAGIC): Change to reflect change in
class user_info.
(class user_info): Add member warned_nonativesyms.
* Makefile.in (cygpath.exe): Link against cygwin.a before linking
against ntdll.dll to avoid linking symbols defined in both DLLs
from ntdll.
(ps.exe): Ditto.
(sigheld): Delete.
(sig_send): Eliminate special-case __SIGHOLD handling.
(wait_sig): Just flag when signals are on hold and add them to the queue rather
than stalling the wait_sig loop. Clear the flag when __SIGNOHOLD is specified.
documentation outputs. Apparently they were the predecessors of
setup-net.xml and cygwin-ug-net.xml. I don't know if for a time there
were parallel versions of the manuals and one fork died, or if the cutover
was clean and the old versions were just never removed. Either way,
they're dead junk now.
printed it.
- Removed obsolete utils.sgml
- Added a ChangeLog entry for this replacement, which partially took
place days ago. This checkin formalizes the switch from SGML to
DocBook XML for this file.
INFINITE amount of time. Instead default to 1/10 second.
(fhandler_pty_slave::open): Just default to INFINITE wait rather than
(now) waiting longer than previously.
include. You can't mix the two fragment inclusion mechanisms within
a single document because of the way it interacts with autoconf "build
in separate tree" mechanism. Either work separately, but they fail when
you try to use them together due to the way doctool chooses output
directories for its generated files.
(system_call_handle): Rename from system_call_cleanup.
(is_system_call): New convenience method.
(system_call_handle::system_call_handle): Use ILLEGAL_SIG_FUNC_PTR rather than
cast. Call sig_send here rather than in caller. Initialize oldint.
(system_call_handle::arm): New function pulled from constructor.
(~system_call_handle::system_call_handle): Use is_system_call().
(child_info_spawn::worker): Use system_call_handle to set up for system call
early. Use arm call prior to waiting for child to properly set up signal
handling. Move comment closer to code it is commenting on.
effect is to move away from DocBook SGML and DJ Delorie's doctool and
toward pure DocBook XSL. (There remains just one use of doctool, and
we have plans for replacing it, too.) See ChangeLog for details.
warnings between regparm definitions and declarations.
* smallprint.cc (__small_vswprintf): Conditionalize declaration and
setting of l_opt for only x86_64.
* spawn.cc (child_info_spawn::worker): Remove unused 'pid' variable.
* thread.cc (verifyable_object_isvalid): Temporarily define as
non-inline with gcc 4.7+, regardless of target.
functionality.
(system_call_cleanup::system_call_cleanup): Set up signals like system()
requires. Unblock previously-blocked signal handling.
(system_call_cleanup::~system_call_cleanup): Restore signal handling after
system().
(child_info_spawn::worker): Put signals on hold and use system_call_cleanup
class to set and restore signals rather than doing it prior to to running the
program. Remove the ill-conceived pthread_cleanup stuff.
dereference.
(CYG_EXC_CONTINUE_EXECUTION): Define based on standard Windows definition.
(CYG_EXC_CONTINUE_SEARCH): Ditto.
(exception::handle): Move andreas detection earlier. Make comment clearer.
(signal_exit): Set core-dumped flag.
* x86_64.din: New file.
* common.din: New file.
* cygwin.din: Delete.
* cygwin64.din: Delete.
* gendef: Rework to take options rather than using positional parameters.
Accept multiple files as input.
(faq.programming.objective-c): Include gcc4.
(faq.programming.make-execvp): Drop text discouraging usage of -j.
(faq.programming.undeclared-functions): Drop entry.
(faq.programming.x86-assembly): Ditto.
(faq.programming.djgpp): Ditto.
* environ.cc (set_winsymlinks): Set allow_winsymlinks.
(parse_thing): Change "winsymlinks" to set by function.
* globals.cc (enum winsym_t): Define.
(allow_winsymlinks): Define as winsym_t.
(ro_u_afs): New R/O Unicode string.
* mount.cc (fs_info::update): Fix comment. Handle AFS.
(fs_names): Add "afs".
* mount.h (enum fs_info_type): Add afs.
(class fs_info): Implement afs.
* path.cc (symlink): Drop third parameter in call to symlink_worker.
(symlink_nfs): New function.
(symlink_native): New function.
(symlink_worker): Drop third argument. Handle native symlink type by
calling symlink_native. Move code to handle NFS to symlink_nfs. Fix
formatting. Slightly restructure code.
* path.h (class path_conv): Add fs_is_afs method.
(symlink_worker): Declare here.
* security.h: Define privilege constants as unsigned int instead of as
unsigned long.
* syscalls.cc (mknod_worker): Set third parameter in symlink_worker
call to WSYM_lnk.
* winsup.h (symlink_worker): Drop declaration here.
cygwin_source from ../Makefile.common.
* new-features.sgml (ov-new1.7.19): New section. Document dropped
support for pre-XP SP3 and added support for 64 bit Cygwin.
* include/sys/sysinfo.h (struct sysinfo): Rename __unused member to __f.
* libc/fts.c (__FBSDID): Drop definition.
* regex/regexec.c (__unused): Drop definition.
event.
(_cygtls::handle_SIGCONT): Declare ew function.
* cygwait.cc (is_cw_sig_handle): Delete.
(is_cw_sig_cont): New convenience define.
(cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT.
* cygwait.h (cw_wait_mask): Add cw_sig_cont.
* exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont
param for cygwait. Don't zero signal here outside of lock.
(sigpacket::setup_handler): Don't check for in_forkee since we will now never
get here in that state.
(_cygtls::handle_SIGCONT): Define new function.
(sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke
continue_now handling. Allow SIGKILL to kill a suspended process. Delete a
couple of now-unneeded labels.
(_cygtls::call_signal_handler): Reorganize setting of incyg within lock.
* sigproc.cc (pending_signals): Simplify.
(pending_signals::clear): New method.
(_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to
avoid handle leaks.
(sig_clear): Simplify by just calling sigq.clear().
(sig_dispatch_pending): Always call sigq.pending even in signal thread to force
another loop in wait_sig.
(sig_send): Remove a "goto out" just before out: label.
(pending_signals::add): Simplify.
(pending_signals::del): Delete.
(pending_signals::next): Delete.
(wait_sig): Define variable q to be the start of the signal queue. Just
iterate through sigq queue, deleting processed or zeroed signals. Only set
clearwait when the current signal is SIGCHLD.
* sigproc.h: Add a comment about an unused enum.
* dcrt0.cc (parent_sigmask): Delete.
(dll_crt0_1): Use spawn_info->moreinfo->sigmask rather than saved parent signal
mask.
* thread.cc (pthread::thread_init_wrapper): Add comment stressing the
importance of maintaining ordering of statements.
(suffix_scan::name_len): New method.
(suffix_scan::has): Store namelen since we have it already anyway.
Add a bit of explanation and a FIXME to comment.
(suffix_scan::next): Never attach extra .lnk suffix if resulting
filename length exceeds NAME_LEN.
(symlink_info::check): Bail out immediately with ENAMETOOLONG if
filename length exceeds NAME_LEN.
* cygheap.cc (init_cygheap::find_tls): Rename threadlist_ix -> ix. Only take
one pass through thread list, looking for eligible threads to signal. Set a
new param indicating that function has found a sigwait* mask.
* cygheap.h (init_cygheap::find_tls): Reflect new parameter.
* dcrt0.cc (parent_sigmask): New variable.
(child_info_spawn::handle_spawn): Save parent's signal mask here.
(dll_crt0_1): Restore parent's signal mask to tls sigmask as appropriate. Call
sig_dispatch_pending to flush signal queue when we can finally do something
with signals.
* exceptions.cc (sigpacket::process): Avoid attempting to handle signals if we
haven't finished initializing. Rely on the fact that find_tls will do mask
checking and don't do it again. Delete ill-named 'dummy' variable.
* sigproc.cc (cygheap_exec_info::alloc): Save calling thread's signal mask in
new sigmask field.
(wait_sig): Try to debug when WFSO fails and DEBUGGING is defined.
* thread.cc (pthread::set_tls_self_pointer): Make this a true automatic method
rather than inexplicably relying on a thread parameter.
(pthread::thread_init_wrapper): Accommodate set_tls_self_pointer change to
non-static. Initialize sigmask before setting tid or suffer signal races.
* ehread.h (pthread::set_tls_self_pointer): Make non-static, delete parameter.
thread stack on systems not freeing it by themselves.
* wincap.h (wincaps::terminate_thread_frees_stack): New element.
* wincap.cc: Implement above element throughout.
(pinfo::operator == (char *)): Remove unused operator.
* pinfo.cc (pinfo::status_exit): Move this function info pinfo class. Use
progname from the pinfo rather than myself. Be defensive when inspecting
procinfo.
(pending_signals::pending): Force an additional loop through wait_sig by
setting retry whenever this function is called.
(sig_send): Reorganize to wait for SIGHOLD at bottom. Always add signal to
pending queue and work on whole queue rather than just the one signal. Loop
when sigq.retry is set. Fix long-broken check for SIGCHLD after queued
signals.
follow Linux.
* fhandler_socket.cc: Change UNIX_PATH_LEN to UNIX_PATH_MAX throughout.
(fhandler_socket::recv_internal): Don't return prematurely in case of
successful return. For AF_LOCAL sockets, overwrite returned AF_INET
name with AF_LOCAL name.
filename length to allow non-NUL terminated strings within namelen
bytes. Copy over sun_path to local array sun_path to have a
NUL-terminated string for subsequent function calls. Move path_conv
check before OS bind call to not bind the socket before being sure
the file doesn't exist. Add and fix comments.
(mainly in fhandler*) start fixing gcc 4.7.2 mismatch between regparm
definitions and declarations.
* gendef: Define some functions to take @ declaration to accommodate _regN
defines which use __stdcall.
* gentls_offsets: Define __regN macros as empty.
* autoload.cc (wsock_init): Remove unneeded regparm attribute.
* winsup.h (__reg1): Define.
(__reg2): Define.
(__reg3): Define.
* advapi32.cc (DuplicateTokenEx): Coerce some initializers to avoid warnings
from gcc 4.7.2.
* exceptions.cc (status_info): Declare struct to use NTSTATUS.
(cygwin_exception::dump_exception): Coerce e->ExceptionCode to NTSTATUS.
* fhandler_clipboard.cc (cygnativeformat): Redefine as UINT to avoid gcc 4.7.2
warnings.
(fhandler_dev_clipboard::read): Ditto.
(export_malloc_called): Delete.
(internal_malloc_determined): New variable.
(malloc_init): Control calculation of internal/external malloc based on
'internal_malloc_determined'. Use import_address() to determine if malloc in
user_data is ours or not.
* miscfuncs.cc (thread_wrapper): Make static.
(__import_address): Define new function.
* miscfuncs.h (import_address): New define.
(__import_address): Declare new function.
instead, thus simplifying code allocating and filling pfri. Drop size
and use constant expression in NtSetInformationFile call. Add comments.
Drop redundant test for fs_serial_number and change comment accordingly.
* syscalls.cc (rename): Check for cross-device situation before
touching anything. Explain why. Workaround NFS bug in call to
NtSetInformationFile(FileRenameInformation).
that we're looking for the current thread.
(pthread_rwlock::tryrdlock): Eliminate self variable. Accommodate change in
lookup_reader().
(pthread_rwlock::unlock): Ditto.
(pthread_rwlock::rdlock): Ditto. Move add_reader call after writer tests to
more closely mimic old behavior.
(pthread_rwlock::wrlock): Accommodate change in lookup_reader().
* thread.h ((pthread_rwlock::lookup_reader): Eliminate argument.
pointer to allocated RWLOCK_READER structure.
(pthread_rwlock::rdlock): Reorganize to reflect new add_reader functionality.
(pthread_rwlock::tryrdlock): Ditto. Remove unneeded call to lookup_reader().
* thread.h (pthread_rwlock::RWLOCK_READER::RWLOCK_READER): New constructor.
(pthread_rwlock::add_reader): Reflect new functionality.
available in a limited fashion when exiting.
(sig_dispatch_pending): Ditto.
(sig_send): Ditto.
(exit_thread): Rearrange to avoid an unnecessary DuplicateProcess when exiting.
(wait_sig): Allow special signals when exiting.
* exception.h (cygwin_exception): New class.
(cygwin_exception::dumpstack): Declare new function.
(cygwin_exception::context): Ditto.
(cygwin_exception::dump_exception): Ditto.
* exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception
class. Accommodate new variable names.
(cygwin_exception::dumpstack): Ditto stackdump -> dumpstack.
(exception::handle): Move andreas processing earlier. Defer signal processing
decisions to the signal thread where they belong. Pass exception information
to sig_send via new siginfo_t si_cyg field.
(ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a
process exit and we don't want races with thread exit lock.
(signal_exit): Move back here from sigproc.cc. Modify arguments and remove
from sigpacket class. Decide when to dump core based on signal type.
(sigpacket::process): Handle exiting signals in context of threads rather than
in the signal thread. Signal debugger on non-Windows signals. Remove
setup_signal_exit call.
* sigproc.cc (no_signals_available): Remove argument.
(signal_exit_code): Delete.
(close_my_readsig): Ditto.
(_cygtls::signal_exit): Move to exceptions.cc.
(sigproc_terminate): Don't attempt to terminate signal thread.
(setup_signal_exit): Delete.
(exit_thread): Use new si_cyg entry in siginfo_t.
(sig_send): Just use empty initializer for si. Accommodate change in
no_signals_available argument.
(wait_sig): Remove attempt to "go asynchronous" on process exit. Delete
__SIGEXIT handling. Don't ever exit.
* sigproc.h: Remove __SIGEXIT from signal enum. Renumber.
* include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
* dcrt0.cc (do_exit): Just set exit_state to ES_EVENTS_TERMINATE and nuke call
to events_terminate which just set a superfluous flag.
* sigproc.cc (signal_exit_code): New variable.
(setup_signal_exit): Define new function.
(_cygtls::signal_exit): Remove accommodations for closing the signal pipe
handle.
(exit_thread): Just sleep if we're exiting.
(wait_sig): If signal_exit_code is set, just handle bookkeeping signals and
exit ReadFile loop if there is nothing more to process. Call signal_exit at
end if signal_exit_code is non-zero.
* sigproc.h (setup_signal_exit): Declare new function.
* exceptions.cc (sigpacket::process): Use setup_signal_exit to control exiting
due to a signal.
(exception::handle): Ditto. Query exit_state rather than defunct exit_already
to determine if we are exiting.
* globals.cc (ES_SIGNAL_EXIT): New enum.
* sync.h (lock_process::release): New function for explicitly unlocking muto.
(lock_process::~lock_process): Use release method.
Corinna Vinschen
Christopher Faylor
Warren Young
Yaakov Selkowitz