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(pipe2): Export.
* dtable.cc (dtable::dup_worker): Take additional flags parameter.
Handle O_CLOEXEC flag.
(dtable::dup3): Rename from dup2. Take additional flags parameter.
Check for valid flags. Drop check for newfd == oldfd.
* dtable.h (dtable::dup_worker): Add flags parameter.
(dtable::dup3): Rename from dup2.
* fcntl.cc (fcntl64): Add F_DUPFD_CLOEXEC case.
* fhandler.h (fhandler_mailslot::get_object_attr): Add flags parameter.
* fhandler.cc (fhandler_base::open): Use security attribute with
inheritance according to setting of O_CLOEXEC flag.
* fhandler_console.cc (fhandler_console::open): Ditto.
* fhandler_fifo.cc (sec_user_cloexec): New inline function to
create security attribute with inheritance according to setting of
O_CLOEXEC flag.
(fhandler_fifo::open): Call sec_user_cloexec to fetch security
attribute.
(fhandler_fifo::wait): Ditto.
* fhandler_mem.cc (fhandler_dev_mem::open): Ditto.
* fhandler_mailslot.cc (fhandler_mailslot::get_object_attr): Take
additional flags parameter. Use security attribute with inheritance
according to setting of O_CLOEXEC flag.
(fhandler_mailslot::open): Call get_object_attr with flags parameter.
* fhandler_registry.cc (fhandler_registry::open): Call set_close_on_exec
on real handles to accommodate O_CLOEXEC flag.
* fhandler_tty.cc (fhandler_tty_slave::open): Ditto.
* fhandler_tape.cc: Create mutex with inheritance according to setting
of O_CLOEXEC flag.
* pipe.cc: Replace usage of O_NOINHERIT with O_CLOEXEC.
(fhandler_pipe::init): Simplify setting close_on_exec flag.
(fhandler_pipe::open): Remove setting close_on_exec flag.
(fhandler_pipe::create): Use security attribute with inheritance
according to setting of O_CLOEXEC flag.
(pipe2): New exported function.
* posix_ipc.cc: Throughout, open backing files with O_CLOEXEC
flag to follow POSIX semantics.
* security.h (sec_none_cloexec): New define.
* syscalls.cc (dup): Add missing extern "C" qualifier. Accommodate
renaming of dtable::dup2 to dtable::dup3.
(dup2): Ditto. Check newfd == oldfd here.
(dup3): New function. Check newfd == oldfd here.
(open): Set close_on_exec flag according to O_CLOEXEC flag before
calling fhandler->open.
* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
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case of errors.
(sem_open): Ditto.
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convention rules to Linux. Add comment.
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from complaining about the very thing we're trying to test.
* ntea.cc (read_ea): Reorganize to avoid a new compiler warning/error.
* sched.cc (sched_rr_get_interval): Ditto.
* select.cc (peek_serial): Ditto.
* libc/rexec.cc (ruserpass): Ditto.
* posix_ipc.cc (ipc_names): Make static to avoid a compiler warning
(and it's the right thing to do anyway).
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and use FILE_ATTRIBUTE_DIRECTORY directly in call to NtCreateFile.
* posix_ipc.cc (ipc_mutex_init): Fix format string when creating IPC
object name.
(ipc_cond_init): Ditto.
* security.cc (alloc_sd): Add parentheses to fix setting initial
owner_allow value.
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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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* 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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the prefix len in it.
(check_path): Take length parameter. Use this length insetad of
calling strlen. Allow PATH_MAX length paths.
(ipc_mutex_init): Use MAX_PATH instead of CYG_MAX_PATH.
(ipc_cond_init): Ditto.
(shm_open): Allocate local name buffer not bigger than necessary. Call
check_path with additional length argument.
(shm_unlink): Ditto.
(mq_open): Ditto.
(mq_unlink): Ditto.
(sem_open): Ditto.
(sem_unlink): Ditto.
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* net.cc: Ditto.
* posix_ipc.cc: Ditto.
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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.
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* posix_ipc.cc: Include thread.h and semaphore.h. Remove TODO
comment.
(ipc_names): Add max_len member. Set to maximum length of the path
before tacking on the prefix path. Set prefix path for named semaphors
to /dev/shm, as on Linux.
(enum ipc_type_t): Change sem to semaphore to avoid name conflicts.
(check_path): Detect empty paths. Use ipc_names's max_len member.
Use __small_sprintf to create full object path name. Special case
semaphores.
(ipc_cond_init): Drop superfluous strcpy.
(class ipc_flock): New class to simplify file locking in subsequent
code.
(struct mq_hdr): Raise size of mqh_uname to allow adding a unique
LUID to the name.
(mq_open): Fix formatting. Create unique synchronization object names
using AllocateLocallyUniqueId.
(struct sem_finfo): New structure defining named semaphore file content.
(sem_open): Move here. Rework implementation to allow kernel
persistent implementation of POSIX named semaphores.
(_sem_close): Implement sem_close.
(sem_close): Move here. Just call _sem_close with do_close parameter
set to true.
(sem_unlink): New function.
* pthread.cc (mangle_sem_name): Remove.
(sem_open): Move to posix_ipc.cc.
(sem_close): Ditto.
* syscalls.cc (close_all_files): Call semaphore::terminate here.
* thread.cc: Fix formatting. Rearrange semaphore functions so that
they are close together.
(semaphore::semaphore): Rework to play nicely with new named semaphore
implementation.
(semaphore::_terminate): Call _sem_close if semaphore is a named
semaphore.
(semaphore::destroy): Don't destroy named semaphores. Return EINVAL
instead.
(semaphore::close): Only destroy named semaphores. Return EINVAL
otherwise.
(semaphore::open): Rework to play nicely with new named semaphore
implementation. Loop through existing semaphores to be able to
return same sem_t pointer as a former call on the same named semaphore.
(semaphore::getinternal): New function called from _sem_close.
* thread.h (class List): Make mx and head public.
(class semaphore): Fix formatting. Align method declarations with
implementation in thread.cc. Add members used for named semaphores.
(semaphore::terminate): New static method.
* include/semaphore.h: Redefine SEM_FAILED. Fix formatting.
(sem_unlink): Add declaration.
* include/cygwin/version.h: Bump API minor number.
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before using it in file exists case.
* include/mqueue.h (mqd_t): Make non-pointer type.
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(ipc_cond_init): Ditto.
(struct mq_hdr): Add mqh_uname member to store synchronization object
name.
(mq_open): Create unique synchronization object name and store in
mq_hdr->mqh_uname. Use this name in calls to ipc_mutex_init and
ipc_cond_init.
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* cygwin.din (mq_close): Export.
(mq_getattr): Export.
(mq_notify): Export.
(mq_open): Export.
(mq_receive): Export.
(mq_send): Export.
(mq_setattr): Export.
(mq_timedreceive): Export.
(mq_timedsend): Export.
(mq_unlink): Export.
* posix_ipc.cc: New file implementing the above functions. Move
shm_open and shm_unlink from syscalls.cc here.
* sysconf.cc (sca): Set value of _SC_MQ_OPEN_MAX to MQ_OPEN_MAX,
_SC_MQ_PRIO_MAX to MQ_PRIO_MAX, _SC_MESSAGE_PASSING to
_POSIX_MESSAGE_PASSING.
* include/limits.h (MQ_OPEN_MAX): Define.
(MQ_PRIO_MAX): Define.
* include/mqueue.h: New file.
* include/cygwin/version.h: Bump API minor number.
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