newlib doesn't install cleanup handlers. Explain the problem.
(class __cygwin_lock_handler): New class.
(__cygwin_lock_cleanup): New function.
(__cygwin_lock_lock): Push __cygwin_lock_cleanup thread cleanup
handler.
(__cygwin_lock_trylock): Ditto.
(__cygwin_lock_unlock): Pop thread cleanup handler.
(pthread::pop_cleanup_handler): Temporarily allow cleanup function to
destroy cleanup handler so we can pop in another function than we
pushed in.
to PTHREAD_CANCEL_DISABLE from here...
(pthread::pop_all_cleanup_handlers): ...to here, otherwise any explicit
call to pthread_cleanup_pop disables cancellation for this thread.
* devices.cc: Regenerate.
* dtable.cc (fh_alloc): Don't forget FH_KMEM.
* fhandler_mem.cc (fhandler_dev_mem::open): Set errno to EACCES rather
than ENOENT on systems not granting access to physical memory from
user space.
* child_info.h (child_info_spawn::parent_winpid): Declare new field.
(child_info_spawn::get_parent_handle): Declare new function.
* dcrt0.cc (child_info_spawn::get_parent_handle): Define new function.
(child_info_spawn::handle_spawn): Recreate parent handle if possible when
dynamically loaded. Don't mess with parent handle if it's NULL.
* spawn.cc (child_info_spawn::worker): Set parent_winpid appropriately.
* fhandler.h (PIPE_ADD_PID): Redefine to something we actually DON'T use.
* pipe.cc (fhandler_pipe::create): Avoid clearing all open_mode bits when
checking for PIPE_ADD_PID. Properly keep track of len so that passed in name
is not overwritten.
* pinfo.cc (pinfo::init): Reuse shared memory if the state is marked with
PID_REAPED.
* spawn.cc (child_info_spawn::worker): Don't duplicate myself_pinfo into
non-cygwin child.
* fork.cc (frok::parent): Improve error output.
* cygheap.h (init_cygheap::pid_handle): Delete.
* dcrt0.cc (child_info_spawn::handle_spawn): Keep parent open if we have
execed.
* pinfo.cc (pinfo::thisproc): Remove pid_handle manipulations.
(pinfo::init): Don't consider a reaped process to be available.
* spawn.cc (child_info_spawn::worker): Remove pid_handle manipulations. Make
wr_proc_pipe and parent noninheritable when starting a program which doesn't
use the Cygwin DLL. Conditionally reset wr_proc_pipe to inheritable if
CreateProcess fails. Inject wr_proc_pipe handle into non-Cygwin process.
Consider a non-cygwin process to be 'synced'.
* fhandler_tty.cc (bytes_available): Revert to previous Oct-2011 behavior where
a dummy buffer is used to determine how many bytes will be read.
(fhandler_pty_master::ioctl): Correct coercion in assignment.
systems. Change comment acordingly.
* wincap.h (wincaps::has_gaa_largeaddress_bug): New element.
* wincap.cc: Implement above element throughout.
(wincap_8): New globale wincaps to support Windows 8.
(wincapc::init): Take Windows 8 into account. Set new
has_gaa_largeaddress_bug member to false on 32 bit systems.
* sigproc.cc (proc_terminate): Don't set parent pid of child to 1 if we've
execed since the execed process is still considered the parent.
* child_info.h: Bump copyright.
* pipe.cc (fhandler_pipe::create): Don't indiscriminately add process id to
every pipe since some pipe names (fifo, tty) don't need it.
* sigproc.cc (sigproc_init): Pass PIPE_ADD_PID to fhandler_pipe::create to
ensure that pid is always part of sigwait pipe name.
* globals.cc (pipe_byte): Declare.
* pipe.cc (fhandler_pipe::create): Use current process id in pipe name rather
than pid for simple name collision avoidance. Do this only once to avoid extra
overhead when a busy pipe is found. Honor pipe_byte to create non-message
pipes if set.
* sigproc.cc (sigproc_init): Use a specific name for the signal pipe.
on-disk device and we were stating it.
* path.cc (path_conv::check): Set PATH_KEPT_HANDLE.
* path.h (path_types): Add PATH_KEPT_HANDLE.
(path_conv::kept_handle): Implement.
* dtable.cc (dtable::fixup_after_exec): Specifically reject releasing
nohandle() type fhandlers rather than relying on contents of io_handle.
(dtable::fixup_after_fork): Ditto.
* fhandler_termios.cc: Add includes necessary for definitions of have_execed
and have_execed_cygwin.
(fhandler_termios::sigflush): Don't flush console input when we've started a
non-Cygwin process.
* devices.in (exists_console): Use fhandler_console::exists () rather than raw
test.
* devices.cc: Regenerate.
* fhandler.h (fhandler_console::exists): Define new function.
* fhandler_console.cc (fhandler_console::need_invisible): Use
fhandler_console::exists () rather than raw test.
* spawn.cc: Rename assitant to assistant throughout.
(child_info_spawn::worker): Simplify test for when to start a non-Cygwin
process in its own process group. Just do it whenever we start a non-Cygwin
process.
ENOENT if non-existent file got opened for reading only. Explain why.
* path.cc (path_conv::check): Stick to ENOENT if file has been opened
for informational purposes only. Add to comment.
(getpass): Rework to use /dev/tty in the first place. Install
_getpass_close_fd as pthread cleanup handler. Flush prompt explicitely.
Lock input and switch off signal input handling when reading password.
(dev_on_fs): Set bit size.
(is_dev_resident): Define new method.
* devices.in: Use different method for labelling requested name for dev
storage: prefix it with a ='. Use an actual ':' to denote an internal device.
(exists_console): Avoid repeated test.
(exists_ntdev_silent): Rename from the less-descriptive exists_ntdevs.
(dev_dev_storage): Delete unneeded define.
* gendevices: Add a flag to each line denoting whether the device lives in /dev
space.
(generate): Handle special ":" case here for internal devices. Parse
=something_dev as requiring a storage location. Tack the rest of the line back
onto the reformulated "$rest".
* devices.cc: Regenerate.
* fhandler_dev.cc (fhandler_dev::readdir): Set st_ino to device number.
* syscalls.cc (fhandler_base::stat_fixup): Ditto. Fix link count for
CD-ROM devices. Fix typo in comment.
fhandler_base::set_ino_and_dev.
* syscalls.cc (fhandler_base::stat_fixup): Ditto. Accommodate name
change throughout. Fixup link count of console devices.
(DEV_CYGDRIVE_MAJOR): Remove.
(iscygdrive_dev): Define.
* dtable.cc (fh_alloc): Accommodate above change.
* path.cc (path_conv::check): Use iscygdrive_dev to check for cygdrive.
* syscalls.cc (fhandler_base::set_ino_and_dev): Drop check for
DEV_CYGDRIVE_MAJOR from conditional.
* syscalls.cc (fhandler_base::set_ino_and_dev): New method to set
st_ino, st_dev, and st_rdev for devices in a single spot.
(fstat64): Call fhandler_base::set_ino_and_dev instead of setting
st_ino, st_dev, and st_rdev here.
(stat_worker): Ditto.
(dtable::fixup_after_exec): Use fixup_close() and detect when it was not
possible to open an inherited file handle.
(dtable::fixup_after_fork): Defensively close any file handles which were not,
for some reason, inheritable.
* dtable.h: Make #pragma once.
(dtable::fixup_close): Declare new function.
* fhandler_console.cc (fhandler_console::set_unit): Set I/O handles to NULL
when this function fails.
(device::dev_on_fs): Remove unneeded bit field. Just make a normal boolean.
(device::exists): Redefine function.
* devices.in: Move previous functions earlier since they are now only defined
static. Rename some functions due to an as-yet unresolved bug in gendevices.
Rename posix part of internal-only devices with a double-slash. gendevices
will eventuall translate that to a ":".
(device::parse): Rework to use dev pointer and dev_storage_end.
* devices.cc: Regenerate.
* gendevices: Translate "// to ": after shilka processing.
* devices.h (device::exists_func): New member function pointer,
replacing noexpose.
(device::expose): Remove.
(device::exists_never): Declare.
(device::exists_ptys): Declare.
(device::exists_cons): Declare.
(device::exists_console): Declare.
(device::exists_nt_dev): Declare.
(device::exists): Declare.
* devices.in (dev_storage): Replace former noexpose values with
pointers to matching exists_XXX method.
(device::exists_never): New method.
(device::exists_ptys): New method.
(device::exists_cons): New method.
(device::exists_console): New method.
(device::exists_nt_dev): New method.
(device::exists): New method.
* fhandler_dev.cc (fhandler_dev::readdir): Replace call to
device::expose with call to device::exists and drop all further
existence filtering since it's done in device::exists now.
* path.cc (path_conv::check): Replace call to device::expose with call
to device::exists.
* devices.cc: Regenerate.
* devices.h (device::noexpose): New field.
(device::dev_on_fs): Make a bit field.
(get_major): Use proper type for declaration.
(expose): New field.
(ext_dev_storage): Delete declaration.
(dev_storage_size): Ditto.
(dev_storage): New declaration.
(dev_storage_end): Ditto.
* devices.in: Mark /dev/ptym*, /dev/com*, /dev/pipe, /dev/fifo, and "/dev" as
"no expose".
* fhandler.h (fhandler_dev::lastrealpos): Delete declaration.
(fhandler_dev::devidx): Declare new field.
* fhandler_disk_file.cc: Move fhandler_dev functions into fhandler_dev.cc.
* fhandler_dev.cc: Add includes needed for functions moved from
fhandler_disk_file.cc.
(dev_storage_scan_start): Define place to start listing devices.
(dev_storage_size): Define size of array to scan.
(fhandler_dev::fhandler_dev): Move here from fhandler_disk_file.cc.
(fhandler_dev::opendir): Ditto.
(fhandler_dev::readdir): Just check devidx for non-NULL to determine when to go
to disk for /dev content. Use dev_storage rather than ext_dev_storage.
Iterate over dev_storage using devidx pointer. Use accessor functions rather
than raw references to the device struct. Only increment dir->__d_position
when we are actually going to be returning something. Add debug_printf for
exit.
(fhandler_dev::rewinddir): Set devidx as appropriate depending on whether
there's a /dev on disk or not.
* gendevices: Don't mark dev_storage static but do put it in the _RDATA
section.
* path.cc (path_conv::check): Use new "device::expose()" function to decide to
forbid programs from referencing internal device types.
(format_process_mountstuff): New function, derived from
format_process_mounts. Only open another user's user_info shared
memory area if the process is owned by another user. Actually
access the opened shared user_info to get the right mount table.
For other users, don't print remote cygdrive mount points. Print
mountinfo or mounts output depending on the bool mountinfo argument.
(format_process_mounts): Just call format_process_mountstuff with
mountinfo set to false.
(format_process_mountinfo): Ditto with mountinfo set to true.
* new-features.sgml (ov-new1.7.11): Add mountinfo.
* fhandler_clipboard.cc (cygcb_t): New type for Cygwin-specific
clipboard format.
(set_clipboard): Use new clipboard format to allow setting a timestamp.
(fhandler_dev_clipboard::fstat): New method. Read modification and
access timestamp as well as length from clipboard data.
(fhandler_dev_clipboard::read): Use new clipboard format.
* times.cc (JITTER): Remove.
(gtod): Revert to process-local variable.
(hires_ms::nsecs): Just return system time to disallow discrepancy with
the OS.
(hires_ms::resolution): Return coarsest timer value from OS. Add
comment to explain why.
(clock_setres): Ditto.
* fork.cc (frok::parent): Call postfork to do all of the manipulation required
prior to calling pinfo::remember.
* pinfo.h (pinfo::set_rd_proc_pipe): Just set pinfo's rd_proc_pipe. Don't
bother setting it to NULL.
* sigproc.cc (child_info_spawn::wait_for_myself): Call postfork to set up
myself for waiting.
* spawn.cc (child_info_spawn::worker): Avoid now-unnecessary global lock.
Consistently test mode rather than chtype when making wr_proc_pipe decisions.
Call postfork() to set up stuff prior to pinfo::remember.
(child_info_spawn::wait_for_myself): Move function to sigproc.cc.
* pinfo.cc (is_toplevel_proc): Delete unneeded variable.
* sigproc.cc (child_info_spawn::wait_for_myself): Move function from header to
here. Do all setup required to properly wait for top-level execed process to
exit.
* spawn.cc (child_info_spawn::worker): Attempt to properly handle _P_DETACH.
Set wr_proc_pipe if top-level process even when execing. Just call
wait_for_myself() to... wait for myself. Don't call cleanup twice.
(dtable::release): "Close" standard handle if appropriate.
* dcrt0.cc (dll_crt0_0): Fix minor switch formatting problem.
* fork.cc (frok::parent): Make minor comment indentation change.
(child_info::rd_proc_pipe): Declare new field.
(child_info::wr_proc_pipe): Ditto.
(child_info::prefork): Declare new function, derived from previous pinfo
version.
* dcrt0.cc (child_info_fork::handle_fork): Close previous wr_proc_pipe when
appropriate and assign new one from passed-in child_info block.
(child_info_spawn::handle_spawn): Assign our wr_proc_pipe handle from passed-in
child_info block.
* fork.cc (child_info::prefork): Define new function.
(frok::child): Clear rd_proc_pipe and wr_proc_pipe so they will not be closed
by the child_info destructor.
(frok::parent): Use child_info prefork handling, outside of retry loop. Set
rd_proc_pipe in child's pinfo after successful CreateProcess. Eliminate
postfork call.
* globals.cc (my_wr_proc_pipe): Define/declare new variable.
* pinfo.cc (pinfo::pending_rd_proc_pipe): Delete.
(pinfo::pending_wr_proc_pipe): Ditto.
(pinfo::prefork): Ditto.
(pinfo::postfork): Ditto.
(pinfo::postexec): Ditto.
(pinfo::wait): Assume that rd_proc_pipe is set up correctly prior to call.
(_pinfo::alert_parent): Replace "wr_proc_pipe" with "my_wr_proc_pipe".
* pinfo.h (_pinfo::_wr_proc_pipe): Delete declaration.
(_pinfo::set_rd_proc_pipe): Define new function.
(pinfo::pending_rd_proc_pipe): Delete declaration.
(pinfo::pending_wr_proc_pipe): Ditto.
(pinfo::prefork): Ditto.
(pinfo::postfork): Ditto.
(pinfo::postexec): Ditto.
(pinfo::wr_proc_pipe): Ditto.
* sigproc.cc (child_info::child_info): Clear rd_proc_pipe and wr_proc_pipe.
(child_info::cleanup): Close rd_proc_pipe and wr_proc_pipe if necessary.
(child_info_fork::child_info_fork): Set forker_finished to NULL by default.
(child_info_spawn::child_info_spawn): Use my_wr_proc_pipe rather than
myself->wr_proc_pipe.
(child_info::sync): Ditto.
(child_info_spawn::cleanup): Call child_info::cleanup.
* spawn.cc (child_info_spawn::worker): Remove call to myself.prefork(). Set
wr_proc_pipe when execing or set up new rd_proc_pipe/wr_proc_pipe via
child_info::prefork when spawning. Remove call to pinfo::postexec. Set
rd_proc_pipe in child pinfo when spawning. Use my_wr_proc_pipe rather than
myself->wr_proc_pipe. Remove call to postfork.
(pinfo::wait): Change some comments.
(pinfo::prefork): Move a comment.
(pinfo::postfork): Set pending_*_pipe variables to NULL if closed.
(pinfo::postexec): Use right name when closing handle.
(_pinfo::alert_parent): Ditto.
* sigproc.h (hold_everything): Remove debugging label.
* mkglobals_h: Ditto for generated globals.h file.
* globals.cc: Use specific NO_GLOBALS_H flag to control inclusion of globals.h.
* winsup.h: Honor NO_GLOBALS_H to control inclusion of globals.h. Make
clear_procimptoken extern inline so that it is only defined when needed.
* fhandler.h (wait_return): Add overlapped_nullread.
* fhandler.cc (fhandler_base_overlapped::wait_overlapped): Detect zero-byte
read as a special case.
(fhandler_base_overlapped::raw_read): Keep looping when zero-byte read detected
without EOF.
(fhandler_base_overlapped::raw_write): Quiet gcc warning by adding
overlapped_nullread to switch statement even though it will never actually be
hit.
size from start of import RVA table to end of section.
(find_first_notloaded_dll): Take big executables into account. Use
offset and size computation as in hook_or_detect_cygwin, just simpler.
(hook_or_detect_cygwin): Return NULL rather than false througout.
Change computation of required mapping size to take non-gcc compilers
into account. Explain the differences and what we do against them.
Don't alloca buf if fn is NULL. Never use buf if fn is NULL.
Fix name and address in previous ChangeLog entry.
failing condition.
(pinfo::wait): Pass name of function to dup_proc_pipe. Eliminate error check
for dup_proc_pipe since it never actually returned an error.
* pinfo.h (_pinfo::dup_proc_pipe): Add an argument.
* spawn.cc (child_info_spawn::worker): Pass name of function to dup_proc_pipe.
Explain why. Add code to check if a DLL with the same basename but
different path is the same DLL. Bail out if not.
(in_load_after_fork): New static NO_COPY bool to allow to differ
between linked and loaded DLL at fork.
(dll_list::load_after_fork): Set in_load_after_fork accordingly.
(dll_dllcrt0_1): Don't treat DLL as linked if in_load_after_fork is set.
Drop test for in_forkee.
(dll_list::operator[]): Add long comment to explain the misery.
(dll_list::alloc): Skip long pathname prefix potentially returned by
GetModuleFileNameW.
* dll_init.h (dll_list::find_by_modname): Add back declaration.
specifically called setsid.
* fhandler_tty.cc (fhandler_pty_slave::dup): Ditto. Also add comment
documenting research into rxvt problem.
* fhandler_termios.cc (fhandler_termios::tcsetpgrp): Don't check specifically
for myself->ctty == -1. Test for > 0 as that is the correct test.
(fhandler_termios::sigflush): Ditto.
prevois patch.
(fhandler_console::open_setup): Install Ctrl-C handler here, if this
console is the controlling tty and the process hasn't been started by
a Cygwin process.
to avoid future problems.
(struct parse_thing): Change all justset to setbool for bool variables.
(parse_options): Add a case for setbool setting for bool variables
since justset (now setdword) always writes a DWORD value, thus
potentially overwriting adjacent memory locations.
* external.cc (cygwin_internal): Drop extern declaration.
(LOCK_DIR_NAME_LEN): Define.
(LOCK_DIR_NAME_DEV_OFF): Define.
(LOCK_DIR_NAME_INO_OFF): Define.
(LOCK_OBJ_NAME_FMT): Define. Add comment.
(class lockf_t): Use bitsize-explicit types. Declare from_obj_name,
(class inode_t): Make use, unuse and inuse methods public. Add a
lock argument to get method declaration.
(inode_t::get): Add lock argument. Only lock node if lock arg is true.
(inode_t::inode_t): Use LOCK_DIR_NAME_FMT as format string.
(lockf_t::from_obj_name): New method to generate lockf_t content from
lock event object basename.
(inode_t::get_all_locks_list): Just call from_obj_name here and copy
result into final lockf_t.
(create_lock_obj_attr): Use LOCK_OBJ_NAME_FMT as format string.
(create_lock_in_parent): New thread function to create lockf_t
structure in parent process.
(delete_lock_in_parent): New thread function to reap stale BSD locks in
parent process.
(lockf_t::create_lock_obj): Try to duplicate lock object handle into
parent process and call create_lock_in_parent as parent remote thread.
(lockf_t::del_lock_obj): Call delete_lock_in_parent as parent remote
thread.
(fhandler_disk_file::lock): Add lock arg to inode_t::get call.
of case sensitivity on post-Windows 2000 systems.
* wincap.h (wincaps::kernel_is_always_casesensitive): New element.
* wincap.cc: Implement above element throughout.
lock object handle explicitely in case of called during fork. Add
comment to explain why.
* fork.cc (frok::child): Drop declaration of fixup_lockf_after_fork.
* spawn.cc (child_info_spawn::worker): Speed up job recognition. Expand
comment to explain every little detail and so we never forget.
* wincap.h (wincaps::has_program_compatibility_assitant): New element.
* wincap.cc: Implement above element throughout.
* fhandler_disk_file.cc (fhandler_cygdrive::opendir): Rename flptst
to drive. Call new get_disk_type function rather than is_floppy and
check SMB drives with the NetUseGetInfo function. Explain why.
* mount.cc (get_disk_type): New function to evaluate disk type from
native NT device name.
(is_floppy): Remove.
* mount.h (enum disk_type): Define.
(get_disk_type): Declare.
* path.h (is_floppy): Drop declaration.
Windows-provided stack rather than an own stack created in
CygwinCreateThread.
(struct thread_wrapper_arg): Rename commitsize to stacklimit.
(CygwinCreateThread): Rename commitsize to real_stacklimit.
WFMO. Drop debug output if process is not available. Set timeout to
0 instead. Document timeout 0 in WFMO comment.
(lf_getblock): Drop invalid F_POSIX lock type shortcut. Only return
overlap if event is not signalled. Fix comment.
in question == our ctty.
* syscalls.cc (setsid): Avoid two function calls.
* dtable.cc (dtable::dup_worker): Remove debugging.
* init.cc (search_for): Calculate for every new process rather than using
shared value.
(threadfunc_ix): Fill in for ever new process rather than sing shared value.
Change related casts throughout.
(thread_wrapper): Only do the thread change if the application provided
the stack. Otherwise, just use the Windows-provided stack. Set up
POSIX guardpage here, if necessary. Move related comment from
CygwinCreateThread here.
(CygwinCreateThread): Never allocate and set up own stack here. Just
compute stack size to reserve and use value in CreateThread call if
stack hasn't been provided by the application.
* collate.h: New header.
(__collate_range_cmp): Declare.
(__collate_load_error): Define.
* glob.cc: Pull in latest version from FreeBSD. Simplify and reduce
Cygwin-specific changes.
* regex/regcomp.c: Include collate.h on Cygwin as well.
(__collate_range_cmp): Move from here...
* nlsfuncs.cc (__collate_range_cmp): ...to here.
* miscfuncs.cc (thread_wrapper): Fix typo in comment.
(CygwinCreateThread): Take dead zone of Windows stack into account.
Change the way how the stack is commited and how to handle guardpages.
Explain how and why.
* thread.h (PTHREAD_DEFAULT_STACKSIZE): Change definition. Explain why.
Corinna Vinschen
Christopher Faylor
Eric Blake
Yaakov Selkowitz