* sigproc.cc (wait_for_sigthread): Ditto. Don't synchronize with wait_sig
after receiving an event that it is ready to go.
(init_sig_pipe): New function.
(wait_sig): Call init_sig_pipe to create pipes for communicating signals to
this process. Don't send sigCONT signal when initializing.
* fork.cc (frok::child): Accommodate wait_for_sigpipe parameter change.
* fhandler.h (fhandler_*::write): Make ssize_t/__stdcall.
(fhandler_*::write_overlapped): Ditto.
(fhandler_*::raw_write): Ditto.
(fhandler_*::readv): Ditto.
(fhandler_*::writev): Ditto.
(fhandler_*::raw_read): Make __stdcall.
* fhandler: Accommodate changes to read/write functions throughout.
* fhandler_clipboard.cc: Ditto.
* fhandler_console.cc: Ditto.
* fhandler_dsp.cc: Ditto.
* fhandler_fifo.cc: Ditto.
* fhandler_mailslot.cc: Ditto.
* fhandler_mem.cc: Ditto.
* fhandler_mem.cc: Ditto.
* fhandler_random.cc: Ditto.
* fhandler_tape.cc: Ditto.
* fhandler_tty.cc: Ditto.
* fhandler_virtual.cc: Ditto.
* fhandler_windows.cc: Ditto.
* fhandler_zero.cc: Ditto.
* syscalls.cc (readv): Use ssize_t as temp variable.
* fhandler.cc (fhandler_base::read): Coerce returned len to signed or it will
never be treated as < 0.
(fhandler_base::wait_overlapped): Minimize calls to GetLastError. Remove
duplicate debugging test. Fix error return.
* fhandler.h (fhandler_fifo::fifo_name): Declare new function.
(fhandler_fifo::close): Ditto.
(fhandler_fifo::dup): Ditto.
(fhandler_fifo::close_on_exec): Ditto.
* fhandler.cc (fhandler_fifo::fifo_name): Define new function.
(FIFO_BUF_SIZE): New define.
(cnp): Ditto.
(fhandler_fifo::open): Rework. Use cnp to open named pipe. Always open write
side as a client. Open dummy client when writing and can't connect.
(wait): Rework. Implement fifo_wait_for_next_client. Handle signals during
connect better. Add new fifo_wait_for_server code which polls
(sigh) waiting for server.
(fhandler_fifo::raw_read): Handle transition states when one client closes and
another is available.
(fhandler_fifo::close): Define.
(fhandler_fifo::dup): Ditto.
(fhandler_fifo::close_on_exec): Ditto.
(fhandler_base::del_my_locks): Declare taking a del_lock_called_from
as argument.
* fhandler.cc (fhandler_base::close): Call del_my_locks with "on_close".
(fhandler_base::fixup_after_fork): Call del_my_locks with "after_fork".
(fhandler_base::fixup_after_exec): Call del_my_locks with "after_exec".
* flock.cc (fhandler_base::del_my_locks): Take del_lock_called_from
as argument. Call node->del_my_locks with NULL handle in after_exec
case. Explain why.
(initial_env): Set jit_debug when we are automatically starting a gdb process.
* dtable.cc (dtable::get_debugger_info): Don't tty tricks when we are being
debugged by our own captive gdb, as determined by jit_debug == true.
(dtable::init_std_file_from_handle): Detect errors when initializing a tty
early rather than at random points later.
* fhandler.h (fhandler_*::init): Return int to indicate success/failure.
* fhandler.cc (fhandler_base::init): Reflect change in return value.
* pipe.cc (fhandler_pipe::init): Ditto.
(fhandler_pipe::create_selectable): Don't say we're retrying when we aren't.
* fhandler_console.cc (fhandler_console::init): Ditto. Return success/failure.
* fhandler_serial.cc (fhandler_serial::init): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::init): Ditto.
(fhandler_tty_slave::open): Make debugging output more detailed.
* tty.cc (tty_list::terminate): Don't close I/O handles before all slaves have
checked in.
(tty::slave_alive): Make a non-inlined function. Check if tty pipe handles can
be created as an additional exists check.
* tty.h (tty::slave_alive): Just define here.
whether the overlapped event should be tested.
(fhandler_base::read_overlapped): Pass is_overlapped state to has_ongoing_io.
(fhandler_base::write_overlapped): Ditto.
* fhandler.h (fhandler_base::has_ongoing_io): Accommodate argument change.
* select.cc (peek_pipe): Ditto.
* fhandler.cc (fhandler_base::has_ongoing_io): Define new function.
(fhandler_base::read_overlapped): Use has_ongoing_io to avoid writing when
handle has not completed last I/O.
(fhandler_base::write_overlapped): Ditto.
* select.cc (peek_pipe): Be more careful about accessing hEvent field from
get_overlapped().
* fhandler.cc (fhandler_base::fcntl): Fix comment.
(fhandler_base::wait_overlapped): Accept an optional len parameter. Use the
len parameter when WriteFile fails with ERROR_IO_PENDING. Make debug output
less alarming.
(fhandler_base::write_overlapped): Pass len to wait_overlapped.
* fhandler.h (fhandler_base::wait_overlapped): Add an optional argument
denoting the number of characters intended to be written.
* fhandler_tty.cc (fhandler_pty_master::close): Don't close archetype handles
when cygwin is still initializing since the handles aren't actually opened at
that point.
writes. Don't reset event handle when we see a ERROR_IO_PENDING.
* sigproc.cc (stopped_or_terminated): Use bool constants for consistency.
* wait.cc (wait4): Remove nonsensical comment.
real error.
(fhandler_base::write_overlapped): Assume that bytes_written will contain
proper error value.
* pipe.cc (fhandler_pipe::fhandler_pipe): Set uninterruptible_io since signals
are handled by pipe functions now.
(fhandler_base::get_overlapped_buffer): Declare new function.
(fhandler_base::set_overlapped): Ditto.
(fhandler_pipe::overlapped): New variable.
(fhandler_pipe::get_overlapped): Rework to return contents of overlapped
variable.
(fhandler_pipe::set_overlapped): Set overlapped variable based on argument.
(fhandler_fifo::get_overlapped_buffer): Return pointer to io_status.
* fhandler.cc (handler_base::setup_overlapped): Set to overlapped pointer to
NULL if new doit parameter is false. Otherwise set up overlapped event as
usual.
(fhandler_base::wait_overlapped): Return inres if this isn't an overlapped
operation.
(fhandler_base::read_overlapped): Remove inappropriate asserts.
* pipe.cc (fhandler_pipe::fhandler_pipe): Zero overlapped element.
(struct pipesync): Delete.
(getov_result): Ditto.
(pipe_handler): Ditto.
(pipesync::pipesync): Ditto.
(fhandler_pipe::init): Don't set up pipesync thread. Just pass opened_properly
flag along to overlapped setup.
* fhandler_fifo.cc (fhandler_fifo::open): Rework to cause errno to be set to
ENXIO when opening a fifo write/nonblocking.
* environ.cc (ucreqenv): Rename to ucenv. Move code from old ucenv here and
conditionalize it on create_upcaseenv.
(ucenv): Delete.
(environ_init): Fix compiler warning by moving create_upcaseenv test to ucenv.
Don't bother checking for child_proc_info when calling ucenv since it is
assumed to be NULL at the point where the function is called.
* path.cc (symlink_worker): Turn off MS-DOS path warnings when dealing with
devices since the device handler passes in a translated MS-DOS path.
* sec_auth.cc (lsaprivkeyauth): Avoid variable initialization which causes a
compiler error.
* fhandler_netdrive.cc: Update copyright.
* dtable.cc (handle_to_fn): Ditto.
* fhandler_console.cc (fhandler_console::read): Ditto.
(fhandler_console::scroll_screen): Ditto.
(dev_console::set_color): Ditto.
* fhandler_dsp.cc (fhandler_dev_dsp::write): Ditto.
(fhandler_dev_dsp::read): Ditto.
* fhandler_tape.cc (mtinfo_drive::get_status): Ditto.
* hookapi.cc (find_first_notloaded_dll): Ditto.
* mmap.cc (msync): Ditto.
* pipe.cc (pipesync::pipesync): Ditto.
* sec_acl.cc (getace): Ditto.
* sec_auth.cc (create_token): Ditto.
(lsaauth): Ditto.
* select.cc (peek_pipe): Ditto.
* spawn.cc (av::fixup): Ditto.
* syscalls.cc (popen): Ditto.
* tty.cc (tty::init_session): Ditto.
* uinfo.cc (pwdgrp::load): Ditto.
* fhandler.cc (fhandler_base::setup_overlapped): Ditto.
(fhandler_base::wait_overlapped): Rename second use of res variable to wres or
errors are not returned correctly.
* dcrt0.cc: Remove obsolete variable.
* dll_init.cc (release_upto): Fix typo involving incorrect use of '|'.
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Avoid a compiler
warning regarding coercing type-punned variables.
(fhandler_base::fstat_by_name): Ditto. fhandler_fifo.cc
(fhandler_fifo::open_nonserver): Fix = vs. == typo.
(fhandler_fifo::wait): Add all conditions to switch statement to avoid a
compiler warning.
* fhandler_process.cc: Avoid unneeded initialization of variables to zero.
(fhandler_socket::listen): Add braces around initializer.
* flock.cc (inode_t::get_all_locks_list): Reorganize to avoid a compiler
warning. Fix problem with EWOULDBLOCK error return.
* path.cc (GUID_shortcut): Use braces around struct initializer.
(cygwin_conv_path): Reorganize to avoid a compiler warning.
* random.cc (dummy): Mark variable as volatile to avoid a "used uninitialized"
warning.
* libc/getopt.c: Mark some variables as dllexport although gcc doesn't seem to
do the right thing with them.
* libc/minires-os-if.c (get_registry_dns_items): Coerce some function arguments
to avoid a compiler warning.
be non-NULL. Distinguish input result from result derived from WFMO and
GetOverlappedResult or res can never be -1. Only raise SIGPIPE when writing.
* fhandler.h (fhandler_base::wait_overlapped): Pass first argument by value.
* fhandler_fifo.cc (fhandler_fifo::wait): Pass in dummy byte count to
wait_overlapped.
* pipe.cc (DEFAULT_PIPEBUFSIZE): Define to 65536 explicitly.
additional path_conv argument.
* fhandler.cc (fhandler_base::open): Ditto.
* fhandler_disk_file.cc (fhandler_disk_file::fchmod): Never set DOS
R/O attribute when using ACLs.
(fhandler_disk_file::mkdir): Ditto. Set
security descriptor on remote dirs after creating the dir, same as in
fhandler_base::open.
* fhandler_socket.cc (fhandler_socket::bind): Ditto for remote AF_LOCAL
socket files.
* path.cc (symlink_worker): Ditto. for remote symlinks.
* security.cc (alloc_sd): Take additional path_conv argument.
Accommodate throughout. Drop setting FILE_WRITE_EA/FILE_READ_EA
flags unconditionally (was only necessary for "ntea"). Don't set
FILE_READ_ATTRIBUTES and FILE_WRITE_ATTRIBUTES unconditionally on
Samba. Add comment to explain. Drop useless setting of
STANDARD_RIGHTS_WRITE, it's in FILE_GENERIC_WRITE anyway.
Remove FILE_READ_ATTRIBUTES bit from FILE_GENERIC_EXECUTE so as not
to enforce read permissions on Samba.
(set_security_attribute): Take additional path_conv argument.
* security.h (set_security_attribute): Change prototype accordingly.
Unconditionally handle mount points case-sensitive.
Unconditionally handle virtual paths case-sensitive.
Unconditionally handle registry paths case-insensitive.
Otherwise, accommodate case-sensitivity of given path throughout.
* cygheap.cc (cygheap_root::set): Get additional caseinsensitive
parameter and store it.
* cygheap.h (struct cygheap_root_mount_info): Add member
caseinsensitive.
* dlfcn.cc (get_full_path_of_dll): Drop PC_NOFULL parameter from call
to path_conv::check.
* environ.cc (pcheck_case): Remove.
(check_case_init): Remove.
(known): Drop "check_case" option.
* exceptions.cc (open_stackdumpfile): Add comment.
* fhandler.cc (fhandler_base::get_default_fmode): Call pathmatch
instead of strcasematch.
* fhandler_disk_file.cc: Accommodate case-sensitivity of given path
throughout.
(__DIR_mounts::check_mount): Unconditionally check virtual paths
case-sensitive.
(fhandler_disk_file::link): Drop case clash handling.
(fhandler_disk_file::open): Ditto.
(fhandler_disk_file::readdir_helper): Drop managed mount code.
* mount.cc: Remove managed mount code and datastructures.
(struct opt): Remove "managed" option. Add "posix=0" and "posix=1"
options.
(fillout_mntent): Remove "managed" output. Add "posix" output.
* path.cc (struct symlink_info): Remove case_clash member and
case_check method.
(pcheck_case): Remove.
(path_prefix_p): Take additional bool parameter "caseinsensitive".
(pathnmatch): Ditto.
(pathmatch): Ditto.
(mkrelpath): Ditto.
(fs_info::update): Set caseinsensitive flag according to file system
name and FILE_CASE_SENSITIVE_SEARCH flag. Add comment.
(tfx_chars_managed): Remove.
(transform_chars): Drop "managed" parameter. Always use tfx_chars.
(get_nt_native_path): Drop "managed" parameter. Make sure drive letters
are always upper case.
(getfileattr): Change second parameter to denote caseinsensitivity.
(path_conv::check): Initialize caseinsensitive to OBJ_CASE_INSENSITIVE.
Set caseinsensitive according to global obcaseinsensitive flag, file
system case sensitivity and MOUNT_NOPOSIX mount flag.
Drop case_clash and all the related code.
(symlink_worker): Drop case clash handling.
(symlink_info::set): Drop setting case_clash.
(symlink_info::case_check): Remove.
(cwdstuff::set): Add comment.
(etc::init): Take path_conv instead of PUNICODE_STRING as parameter to
allow case sensitivity.
* path.h (enum pathconv_arg): Drop PC_SYM_IGNORE.
(enum case_checking): Remove.
(enum path_types): Drop PATH_ENC, add PATH_NOPOSIX flag.
(struct fs_info): Add caseinsensitive flag and accessor methods.
(class path_conv): Add caseinsensitive member and define
objcaseinsensitive method. Drop case_clash member and isencoded method.
(pathmatch): Change prototype according to above change.
(pathnmatch): Ditto.
(path_prefix_p): Ditto.
(get_nt_native_path): Ditto.
(class etc): Ditto.
(fnunmunge): Remove prototype.
* shared.cc (shared_info::init_obcaseinsensitive): Initialize
obcaseinsensitive flag from obcaseinsensitive registry value.
(shared_info::initialize): Call init_obcaseinsensitive here by the
first process creating the shared memory.
* shared_info.h (mount_item::fnmunge): Remove.
(shared_info::obcaseinsensitive): Rename from obcaseinsensitivity.
(shared_info::init_obcaseinsensitive): Declare.
* syscalls.cc (try_to_bin): Add comment.
* include/sys/mount.h (MOUNT_ENC): Remove flag.
(MOUNT_NOPOSIX): Add flag.
* fhandler.cc (fhandler_base::open): Open files on NFS shares with
correct access flags and EAs.
* fhandler.h (fhandler_base::fstat_by_nfs_ea): Declare.
* fhandler_disk_file.cc (fhandler_base::fstat_by_nfs_ea): New method.
(fhandler_base::fstat_by_handle): Call fstat_by_nfs_ea for files on
NFS shares.
(fhandler_disk_file::fchmod): Use NFS specific method to set mode for
files on NFS shares. Don't overrule errno from call to
set_file_attribute with errno from NtSetInformationFile call.
(fhandler_disk_file::fchown): Add comment.
* mount.cc (fillout_mntent): Accommodate change in second parameter
to fs_info::update.
* nfs.cc: New file.
* nfs.h: New file.
* path.cc (fs_info::update): Take handle instead of bool as second
parameter. Use that handle if it's not NULL. Only close handle if
it has been opened here. Use static defined buffers instead of
alloca'd buffers.
(path_conv::check): Call symlink_info::check with reference to fs.
Don't call fs.update here if file exists.
(conv_path_list): Prefer tmp_pathbuf buffer over using alloca.
(symlink_worker): Use NFS specific method to create symlinks on NFS
shares. Prefer tmp_pathbuf buffer over using alloca.
(symlink_info::check_shortcut): Reopen file from incoming handle
with necessary FILE_GENERIC_READ flag. Prefer tmp_pathbuf buffer over
using alloca.
(symlink_info::check_sysfile): Ditto.
(symlink_info::check_reparse_point): Use tmp_pathbuf buffer to
allocate REPARSE_DATA_BUFFER.
(symlink_info::check_nfs_symlink): New method.
(enum symlink_t): Remove.
(symlink_info::check): Don't use NtQueryAttributesFile. Rather, open
file with necessary access flags and call NtQueryInformationFile. Fix
error handling in case file can't be opened. For existing files, call
fs_info::update here. Restructure symlink checking to accommodate the
fact that the file is already open. Add case for NFS symlinks.
* path.h (fs_info::update): Take handle instead of bool as second
parameter.
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.
NULL before closing.
* spawn.cc (spawn_guts): Don't close moreinfo->myself_pinfo explicitely
in case of failing CloseProcess.
* fhandler.cc (fhandler_base::open_): Return EISDIR when trying to
create a directory.
* path.cc (path_conv::check): If input path had a trailing dir
separator, tack it on to the native path if directory doesn't exist.
* cygwin.din (getxattr, listxattr, removexattr, setxattr, lgetxattr,
llistxattr, lremovexattr, lsetxattr, fgetxattr, flistxattr,
fremovexattr, fsetxattr): Export Linux extended attribute functions.
Sort.
* errno.cc (errmap): Add mappings for ERROR_EAS_DIDNT_FIT,
ERROR_EAS_NOT_SUPPORTED, ERROR_EA_LIST_INCONSISTENT,
ERROR_EA_TABLE_FULL, ERROR_FILE_CORRUPT, ERROR_INVALID_EA_NAME.
* fhandler.h (class fhandler_base): Declare new fgetxattr and
fsetxattr methods.
(class fhandler_disk_file): Ditto.
* fhandler.cc (fhandler_base::fgetxattr): New method.
(fhandler_base::fsetxattr): New method.
* fhandler_disk_file.cc (fhandler_disk_file::fgetxattr): New method.
(fhandler_disk_file::fsetxattr): New method.
* ntdll.h (STATUS_EA_TOO_LARGE): Define.
(STATUS_NONEXISTENT_EA_ENTRY): Define.
(STATUS_NO_EAS_ON_FILE): Define.
* ntea.cc (read_ea): Rewrite for long pathnames and for using with
Linux extended attribute functions.
(write_ea): Ditto.
(getxattr_worker): New static function.
(getxattr): New function.
(lgetxattr): New function.
(fgetxattr): New function.
(listxattr): New function.
(llistxattr): New function.
(flistxattr): New function.
(setxattr_worker): New static function.
(setxattr): New function.
(lsetxattr): New function.
(fsetxattr): New function.
(removexattr): New function.
(lsetxattr): New function.
(fsetxattr): New function.
* security.h (read_ea): Change declaration according to above changes.
(write_ea): Ditto.
* include/cygwin/version.h: Bump API minor version.
(POSIX_NAMED_PIPE_LEN): Ditto.
(dtable::add_archetype): Use crealloc_abort.
(dtable::init_std_file_from_handle): Specifically detect pipe stdin/stdout.
Pass name to build_fh_dev so that proper name is recorded. Use binmode of fh
if it is set before using get_default_mode. Set proper read/write access when
calling init().
(handle_to_fn): Handle pipes.
* fhandler.cc (fhandler_base::wait_overlapped): Add some debugging.
* fhandler.h (fhandler_base::set_name): Default to just setting the path_conv
name.
(fhandler_pipe::init): Declare.
* pipe.cc (struct pipesync): New struct.
(getov_result): New function. Blocks and retrieves the result of an overlay
I/O operation.
(pipe_handler): New function.
(pipesync::pipesync): New function. Initializer for pipesync struct.
(handler_pipe::init): Define. Detects attempts to set up a "native" pipe
fhandler and creates a thread which accepts input from or output to the
non-cygwin pipe, creating a cygwin pipe wrapper around the non-cygwin pipe.
(fhandler_pipe::create): Add pipe-specific flags to call to init().
* exceptions.cc (ctrl_c_handler): Lock process while we determine what to do.
(off_current): New static variable.
(off_append): Ditto.
(fhandler_base::raw_write): Use NtWriteFile. Accommodate O_APPEND here.
(fhandler_base::write): Drop O_APPEND hack. Use NT functions.
(fhandler_base::lseek): Rewrite using NT functions.
* fhandler_disk_file.cc (fhandler_disk_file::fstatvfs): Add space in
debug output.
(fhandler_disk_file::ftruncate): Ditto.
* ntdll.h (STATUS_DISK_FULL): Define.
(FILE_USE_FILE_POINTER_POSITION): Define.
(FILE_WRITE_TO_END_OF_FILE): Define.
Christopher Faylor
Corinna Vinschen
Brian Dessent