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* autoload.cc (WSACloseEvent): Remove.
(WSACreateEvent): Remove.
* cygheap.cc (cygheap_init): Drop initializing shared_prefix.
* cygheap.h (struct init_cygheap): Drop shared_prefix and
shared_prefix_buf members.
* fhandler_socket.cc (sock_shared_name): New static function.
(search_wsa_event_slot): Convert name buffers to WCHAR. Call
NtCreateMutant/NtOpenMutant to create mutexes in session local
namespace.
(fhandler_socket::init_events): Ditto. Fix debug output.
(fhandler_socket::release_events): Close mutexes using NtClose.
(fhandler_socket::dup): Ditto.
* kernel32.cc: New file, implementing Win32 calls in a Cygwin-specific
way.
* mmap.cc (MapView): Make static.
* ntdll.h: Fix status code sorting.
(STATUS_OBJECT_NAME_EXISTS): Define.
(SEMAPHORE_QUERY_STATE): Define.
(CYG_SHARED_DIR_ACCESS): Define.
(CYG_MUTANT_ACCESS): Define.
(CYG_EVENT_ACCESS): Define.
(CYG_SEMAPHORE_ACCESS): Define.
(enum _PROCESSINFOCLASS): Define ProcessSessionInformation.
(struct _PROCESS_SESSION_INFORMATION): Define.
(NtCreateSemaphore): Declare.
(NtOpenSemaphore): Declare.
* flock.cc: Use CYG_xxx_ACCESS access masks where appropriate.
* posix_ipc.cc (ipc_mutex_init): Use native functions to create mutex.
Create in cygwin-shared subdir.
(ipc_cond_init): Ditto for event.
(ipc_mutex_close): Use NtClose.
(ipc_cond_close): Ditto.
(mq_open): Drop "cyg" prefix from mqh_uname.
* shared.cc (CYG_SHARED_DIR_ACCESS): Drop definition here.
(_cygwin_testing): Declare extern on file level.
(get_shared_parent_dir): Change name of shared directory. Add name
to api_fatal output.
(get_session_parent_dir): New function.
(shared_name): Simplify.
(shared_info::initialize): Call get_session_parent_dir.
* shared_info.h (get_session_parent_dir): Declare.
* smallprint.cc (__small_vswprintf): Fix bug in multibyte string
conversion.
* thread.cc (semaphore::semaphore): Align semaphore name to object
names in posix IPC functions.
* include/cygwin/version.h (CYGWIN_VERSION_SHARED_DATA): Bump.
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wsa_event.h instead.
* fhandler_socket.cc (NUM_SOCKS): Move to wsa_event.h.
(wsa_events): Move from DLL shared area to cygwin_shared shared
memory. Accommodate throughout.
(socket_serial_number): Ditto.
* fhandler_tape.cc (mt): Ditto.
(mtinfo_init): Remove.
(mt): Define as cygwin_shared->mt.
* flock.cc (FLOCK_PARENT_DIR_ACCESS): Remove.
(FLOCK_INODE_DIR_ACCESS): Move up in file.
(FLOCK_MUTANT_ACCESS): Ditto.
(FLOCK_EVENT_ACCESS): Ditto.
(get_lock_parent_dir): Remove.
(inode_t::inode_t): Call get_shared_parent_dir to get parent dir handle.
Add a "flock-" prefix to file's lock directory name for clarity.
* mtinfo.h (mtinfo_init): Drop declaration.
* net.cc (last_used_bindresvport): Move from DLL shared area to
cygwin_shared shared memory.
(cygwin_bindresvport_sa): Accommodate above change.
* sec_helper.cc (_everyone_sd): Move here from flock.cc.
* security.h (SD_MIN_SIZE): Ditto.
(everyone_sd): Ditto.
* shared.cc (cygwin_shared_area): Remove.
(cygwin_shared_h): New handle.
(get_shared_parent_dir): New static function.
(shared_name): Drop session_local argument. Call get_shared_parent_dir
here. Add cygwin-shared subdir to object name.
(offsets): Reinstantiate SH_CYGWIN_SHARED member.
(open_shared): Revert change from 2007-03-29 for systems supporting
SeCreateGlobalPrivilege.
(shared_info::initialize): Call mtinfo's initialize here.
(memory_init): Drop call to mtinfo_init.
* shared_info.h (SHARED_INFO_CB): Accommodate change to shared_info.
(CURR_SHARED_MAGIC): Ditto.
(class shared_info): Add members for global socket and tape info
sharing.
(enum shared_locations): Reinstantiate SH_CYGWIN_SHARED.
(get_shared_parent_dir): Declare.
(shared_name): Drop session_local argument from declaration.
* wsa_event.h: New file. Move definitions of NUM_SOCKS and
struct wsa_event here.
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and utilize OBJ_OPENIF flag in call to NtCreateDirectoryObject.
(inode_t::inode_t): Ditto. Same for NtOpenMutant/NtCreateMutant.
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* fcntl.cc (fcntl_worker): Remove.
(fcntl64): Add fault handler. Move fcntl_worker stuff here. Add case
for locking and call fhandler's lock method directly. Make sure that
F_FLOCK flag isn't set in lock call.
(_fcntl): Add fault handler.
* fhandler.cc (fhandler_base::fcntl): Drop lock cases.
* flock.cc (flock): Add fault handler. Simplify code. Call fhandlers
lock method directly instead of fcntl_worker. Add debug output.
(lockf): Add fault handler. Call fhandlers lock method directly
instead of fcntl_worker. Add debug output.
* winsup.h (fcntl_worker): Drop declaration.
(fcntl64): Declare.
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Revamp advisory file locking to avoid cross reference pointers as well
as to allow BSD flock semantics. More agressively delete unused nodes
and sync objects.
* fhandler.h (fhandler_base::ino): Rename from namehash. Fix comment.
(fhandler_base::node): Remove.
(fhandler_base::unique_id): Add.
(fhandler_base::del_my_locks): New method.
(get_ino): Rename from get_namehash. Change usage throughout Cygwin.
(get_unique_id): New method.
* fhandler.cc (fhandler_base::close): Call own del_my_locks method.
Fix comment.
(fhandler_base::fhandler_base): Accommodate new and changed members.
(fhandler_base::fixup_after_fork): Call del_my_locks.
(fhandler_base::fixup_after_exec): Ditto for files with close-on-exec
flag set.
* fhandler_disk_file.cc (get_ino_by_handle): Rename from
readdir_get_ino_by_handle. Accommodate throughout.
(fhandler_base::open_fs): Fill ino with inode number if FS has good
inodes. Allocate a LUID and store in unique_id to recognize file
descriptors referencing the same file object.
* flock.cc: Drop flock TODO comments. Use explicit types __dev32_t
and __ino64_t instead of dev_t and ino_t.
(LOCK_OBJ_NAME_LEN): Change to reflect longer lf_id length.
(get_obj_handle_count): New method.
(lockf_t::lf_id): Change type to long long.
(inode_t::get_lock_obj_handle_count): Drop in favor of static function
get_obj_handle_count.
(inode_t::del_locks): Remove.
(inode_t::get): Add create_if_missing flag argument.
(inode_t::del_my_locks): Reimplement to handle POSIX and BSD flock
locks. Return if node can be deleted or not.
(inode_t::~inode_t): Ditto. Close handles to i_dir and i_mtx.
(fixup_lockf_after_fork): Remove.
(fhandler_base::del_my_locks): New method.
(fixup_lockf_after_exec): Check if node can be deleted.
(inode_t::get): Only create node if create_if_missing is set. Lock
the returned node here before unlocking the node list.
(inode_t::get_all_locks_list): Accommodate new lf_id length.
(inode_t::create_lock_obj): Ditto.
(lockf_t::open_lock_obj): Ditto. Change return type to bool. De-const.
Set lf_obj instead of returning a handle.
(lockf_t::del_lock_obj): Call SetEvent only if new incoming parameters
allow it. Explain how it's supposed to work.
(fhandler_disk_file::lock): Only fetch file length in SEEK_END case.
Use NtQueryInformationFile(FileStandardInformation) instead of
calling fstat_by_handle. Always unlock node before returning.
Use fhandler's unique id to create lf_id for BSD flock locks.
Rely on node lock from inode_t::get. Call del_lock_obj on removed
locks here to allow explicit unlocking. Delete node if no lock exists
on the file anymore.
(lf_setlock): Get file handle as additional parameter. Handle the fact
that lf_getblock now always opens the attached event object. Reactivate
erroneously applied patch which deactivates setting thread priority.
Additionally handle blocking on BSD flock locks.
(lf_clearlock): Get file handle as additional parameter.
(lf_getlock): Close event handle opened by lf_getblock.
(lf_getblock): Open potentially blocking event object here and check
its signal state if it's a BSD flock lock.
(lf_wakelock): Get file handle as additional parameter.
* fork.cc (frok::child): Drop call to fixup_lockf_after_fork.
* ntdll.h (struct _EVENT_BASIC_INFORMATION): Define.
(enum _EVENT_INFORMATION_CLASS): Define.
(NtQueryEvent): Declare.
* fhandler.h (fhandler_base::fs_flags): Remove.
(fhandler_base::set_fs_flags): Remove.
(fhandler_base::get_fs_flags): Remove.
* fhandler.cc (fhandler_base::write): Check for sparse file using
pc.fs_flags().
* fhandler_disk_file.cc (fhandler_disk_file::ftruncate): Ditto.
The return of the volume serial number in fs_info.
* fhandler.h (get_dev): New method.
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Drop call to
NtQueryVolumeInformationFile(FileFsVolumeInformation). Just use
get_dev() method.
* fhandler_fifo.cc (fhandler_fifo::open) Use device ID and inode number
to generate fifo name.
* path.h (fs_info::sernum): New member.
(fs_info::serial_number): New method.
(path_conv::fs_serial_number): New method.
* path.cc (fs_info::update): Fetch volume serial number and store in
sernum.
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cmalloc instead of ccalloc in the default operator. Add comments.
(inode_t::operator new): Call cmalloc instead of ccalloc.
(inode_t::get_all_locks_list): Return lockf_t pointer.
(inode_t::del_all_locks_list): Delete. Remove calls throughout.
(inode_t::get): Handle failing new gracefully.
(MAX_LOCKF_CNT): Define.
(inode_t::get_all_locks_list): Use pre-allocated buffer in i_all_lf
instead of allocating every lock. Return pointer to start of linked
list of locks.
(lockf_t::open_lock_obj): Create event object non-inheritable.
(fhandler_disk_file::lock): Handle failing new gracefully.
(lf_setlock): Allocate temporary buffer for node->i_all_lf from TLS.
Remove erroneous NtClose call.
(lf_getlock): Allocate temporary buffer for node->i_all_lf from TLS.
(lf_getblock): Set lf to return value of get_all_locks_list.
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(FLOCK_INODE_DIR_ACCESS): Define.
(FLOCK_MUTANT_ACCESS): Define.
(FLOCK_EVENT_ACCESS): Define.
(SD_MIN_SIZE): Define.
(everyone_sd): Define to simplify calling _everyone_sd.
(_everyone_sd): Replace everyone_sync_sd. Take SECURITY_DESCRIPTOR as
argument and allow to specify access mask.
(get_lock_parent_dir): Open/Create parent dir with
FLOCK_PARENT_DIR_ACCESS. Add text to api_fatal message.
(inode_t::inode_t): Open/Create dir with FLOCK_INODE_DIR_ACCESS.
Open/Create mutant with FLOCK_MUTANT_ACCESS. Add text to api_fatal
message.
(lockf_t::create_lock_obj): Create event with FLOCK_EVENT_ACCESS.
Add text to api_fatal message.
(lockf_t::open_lock_obj): Open event with FLOCK_EVENT_ACCESS.
On failure, just return NULL pointer instead of calling api_fatal.
(lockf_t::get_lock_obj_handle_count): Replace call to small_printf
with call to debug_printf.
(lf_setlock): Handle a failure to open the lock event object as
EDEADLK. Call system_printf if opening sync objects fail.
* ntdll.h (DIRECTORY_TRAVERSE): Define.
(DIRECTORY_CREATE_OBJECT): Define.
(DIRECTORY_CREATE_SUBDIRECTORY): Define.
(EVENT_QUERY_STATE): Define.
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in lock event object name.
(lockf_t::create_lock_obj): Ditto.
(lockf_t::open_lock_obj): Ditto.
(lf_setlock): Only check POSIX locks for deadlock condition.
(lf_findoverlap): Don't let POSIX and flock locks interact.
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(lf_setlock): Treat not being able to sync on a process as a potential
deadlock situation. Close process handle using CloseHandle.
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Implement advisory file locking.
* cygheap.h (struct init_cygheap): Add inode_list member.
* cygwin.din (lockf): Export.
* dcrt0.cc (child_info_spawn::handle_spawn): Call
fixup_lockf_after_exec.
* dtable.h (class dtable): Add fhandler_disk_file as friend class.
* fhandler.cc (fhandler_base::close): Call del_my_locks if node is set.
(fhandler_base::fhandler_base): Initialize node to NULL.
(fhandler_base::fixup_after_fork): Ditto.
* fhandler.h (class fhandler_base): Add member node.
* fhandler_disk_file.cc (fhandler_disk_file::lock): Delete.
* flock.cc: Implement all advisory file locking here.
(fhandler_disk_file::lock): Implement here.
(flock): Call fcntl with F_FLOCK bit set. Remove test main function.
(lockf): New function.
* fork.cc (frok::child): Call fixup_lockf_after_fork.
* ntdll.h (DIRECTORY_ALL_ACCESS): Define.
(struct _OBJECT_BASIC_INFORMATION): Define.
(enum _EVENT_TYPE): Define.
(NtCreateDirectoryObject): Declare.
(NtCreateEvent): Declare.
(NtCreateMutant): Declare.
(NtOpenEvent): Declare.
(NtOpenMutant): Declare.
* include/cygwin/version.h: Bump API minor number.
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* flock.cc (flock): Use struct __flock64. Call fcntl_worker.
Use Cygwin errno functions instead of accessing errno directly.
* winsup.h: Declare fcntl_worker.
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