* fhandler.h (fhandler_base::has_acls): Make pass through for path_conv method.
(fhandler_base::isremote): Ditto.
(fhandler_base::is_fs_special): Ditto.
(fhandler_base::has_attribute): Ditto. Define new function.
(fhandler_base::fhaccess): Declare new function based on access_worker.
(fhandler_base::set_has_acls): Eliminate obsolete function.
(fhandler_base::set_isremote): Ditto.
* fhandler.cc (fhandler_base::fhaccess): Move from syscalls.cc and into
fhandler_base class. Use fhandler methods to access data rather than path_conv
stuff.
(fhandler_base::device_access_denied): Use fhaccess method.
* fhandler_disk_file.cc (fhandler_disk_file::opendir): Ditto.
(fhandler_base::open_fs): Remove calls to obsolete functions.
* fhandler_virtual.cc (fhandler_virtual::open): Ditto.
* winsup.h (access_worker): Remove obsolete access_worker declaration.
*syscalls.cc (access_worker): Move function to fhandler.cc.
(access): Use fhaccess method.
* pinfo.cc (_pinfo::set_ctty): Clarify debugging output.
* sigproc.cc (sig_dispatch_pending): Ditto.
* syscalls.cc (setsid): Perform minor rearrangement.
* devices.gperf: New file.
* devices.shilka: New file.
* cygwin-gperf: New file.
* cygwin-shilka: New file.
* fhandler_fifo.cc: New file.
* fhandler_nodevice.cc : New file. Reorganize headers so that path.h precedes
fhandler.h throughout. Remove device argument and unit arguments from fhandler
constructors throughout. Remove pc arguments to fhandler functions and use
internal pc element instead, throughout. Use dev element in pc throughout.
Use major/minor elements rather than units and device numbers previously in
fhandler class. Use correct methods for fhandler file names rather than
directly accessing file name variables, throughout.
* Makefile.in (DLL_OFILES): Add devices.o, fhandler_fifo.o
* dcrt0.cc (dll_crt0_1): Call device::init.
* devices.h: Renumber devices based on more Linux-like major/minor numbers.
Add more devices. Declare standard device storage.
(device): Declare struct.
* dir.cc (opendir): Use new 'build_fh_name' to construct a fhandler_* type.
* dtable.cc (dtable::get_debugger_info): Ditto.
(cygwin_attach_handle_to_fd): Ditto.
(dtable::release): Remove special FH_SOCKET case in favor of generic
"need_fixup_before" test.
(dtable::init_std_file_from_handle): Use either build_fh_dev or build_fh_name
to build standard fhandler.
(dtable::build_fh_name): Renamed from dtable::build_fhandler_from_name. Move
out of dtable class. Don't accept a path_conv argument. Just build it here
and pass it to:
(build_fh_pc): Renamed from dtable::build_fhandler. Move out of dtable class.
Use intrinsic device type in path_conv to create new fhandler.
(build_fh_dev): Renamed from dtable::build_fhandler. Move out of dtable class.
Simplify arguments to just take new 'device' type and a name. Just return
pointer to fhandler rather than trying to insert into dtable.
(dtable::dup_worker): Accommodate above build_fh name changes.
(dtable::find_fifo): New (currently broken) function.
(handle_to_fn): Use strechr for efficiency.
* dtable.h: Reflect above build_fh name changes and argument differences.
(fhandler_base *&operator []): Return self rather than copy of self.
* fhandler.cc (fhandler_base::operator =): Use pc element to set normalized
path.
(fhandler_base::set_name): Ditto.
(fhandler_base::raw_read): Use method to access name.
(fhandler_base::write): Correctly use get_output_handle rather than get_handle.
(handler_base::device_access_denied): New function.
(fhandler_base::open): Eliminate pc argument and use pc element of
fhandler_base throughout.
(fhandler_base::fstat): Detect if device is based in filesystem and use
fstat_fs to calculate stat, if so.
(fhandler_base::fhandler_base): Eliminate handling of file names and, instead,
just free appropriate component from pc.
(fhandler_base::opendir): Remove path_conv parameter.
* fhandler.h: Remove all device flags.
(fhandler_base::pc): New element.
(fhandler_base::set_name): Change argument to path_conv.
(fhandler_base::error): New function.
(fhandler_base::exists): New function.
(fhandler_base::pc_binmode): New function.
(fhandler_base::dev): New function.
(fhandler_base::open_fs): New function.
(fhandler_base::fstat_fs): New function.
(fhandler_base::fstat_by_name): New function.
(fhandler_base::fstat_by_handle): New function.
(fhandler_base::isfifo): New function.
(fhandler_base::is_slow): New function.
(fhandler_base::is_auto_device): New function.
(fhandler_base::is_fs_special): New function.
(fhandler_base::device_access_denied): New function.
(fhandler_base::operator DWORD&): New operator.
(fhandler_base::get_name): Return normalized path from pc.
(fhandler_base::get_win32_name): Return windows path from pc.
(fhandler_base::isdevice): Renamed from is_device.
(fhandler_base::get_native_name): Return device format.
(fhandler_fifo): New class.
(fhandler_nodevice): New class.
(select_stuff::device_specific): Remove array.
(select_stuff::device_specific_pipe): New class element.
(select_stuff::device_specific_socket): New class element.
(select_stuff::device_specific_serial): New class element.
(select_stuff::select_stuff): Initialize new elements.
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Move to base class
from fhandler_disk_file.
(fhandler_base::fstat_by_name): Ditto.
(fhandler_base::fstat_by_name): Ditto.
(fhandler_disk_file::open): Move most functionality into
fhandler_base::open_fs.
(fhandler_base::open_fs): New function.
(fhandler_disk_file::close): Move most functionality into
fhandler_base::close_fs.
(fhandler_base::close_fs): New function.
* fhandler_mem.cc (fhandler_dev_mem::open): Use device name in debugging
output.
* fhandler_socket.cc (fhandler_socket::set_connect_secret): Copy standard
urandom device into appropriate place.
(fhandler_socket::accept): Reflect change in fdsock return value.
* fhandler_tty.cc: See "throughouts" above.
* net.cc: Accommodate fdsock change throughout.
(fdsock): Return success or failure, accept fd argument and device argument.
* path.cc (symlink_info::major): New element.
(symlink_info::minor): New element.
(symlink_info::parse_device): Declare new function.
(fs_info::update): Accommodate changes in path_conv class.
(path_conv::fillin): Ditto.
(path_conv::return_and_clear_normalized_path): Eliminate.
(path_conv::set_normalized_path): New function.
(path_conv::path_conv): Set info in dev element. Use path_conv methods Check
for FH_FS rather than FH_BAD to indicate when to fill in filesystem stuff.
where appropriate rather than direct access. Use set_normalized_path to set
normalized path.
(windows_device_names): Eliminate.
(get_dev): Ditto.
(get_raw_device_number): Ditto.
(get_device_number): Ditto.
(win32_device_name): Call new device name parser to do most of the heavy
lifting.
(mount_info::conv_to_win32_path): Fill in dev field as appropriate.
(symlink_worker): Handle new device files.
(symlink_info::check): Ditto.
(symlink_info::parse_device): Define new function.
* path.h (executable_states): Move here from fhandler.h.
(fs_info): Rename variables to *_storage and create methods for accessing same.
(path_conv): Add dev element, remove devn and unit and adjust inline methods to
accommodate.
(set_normalized_path): Declare new function.
* pinfo.cc (_pinfo::commune_recv): Add broken support for handling fifos.
(_pinfo::commune_send): Ditto.
* pipe.cc (fhandler_pipe::close): check for existence of handle before closing
it.
(handler_pipe::create): Rename from make_pipe. Change arguments to accept
fhandler_pipe array. Accommodate fifos.
(pipe): Rework to deal with fhandler_pipe::create changes.
(_pipe): Ditto.
* select.cc: Use individual device_specific types throughout rather than
indexing with obsolete device number.
(set_bits): Use is_socket call rather than checking device number.
* shared_info.h (CURR_MOUNT_MAGIC): Update.
(conv_to_win32_path): Reflect addition of device argument.
* syscalls.cc (mknod_worker): New function.
(open): Use build_fh_name to build fhandler.
(chown_worker): Detect if this is an 'auto' device rather than an on-filesystem
device and handle appropriately.
(chmod_device): New function.
(chmod): Detect if this is an 'auto' device rather than an on-filesystem device
and handle appropriately. Use chmod_device to set mode of in-filesystem
devices.
(stat_worker): Eliminate path_conv argument. Call build_fh_name to construct
fhandler. Use fh->error() rather than pc->error to detect errors in fhandler
construction.
(access_worker): New function pulled from access. Accommodate in-filesystem
devices.
(access): Use access_worker.
(fpathconf): Detect if this is an 'auto' device rather than an on-filesystem
device and handle appropriately.
(mknod_worker): New function.
(mknod32): New function.
(chroot): Free normalized path -- assuming it was actually cmalloced.
* tty.cc (create_tty_master): Tweak for new device class.
(tty::common_init): Ditto.
* winsup.h (stat_worker): Remove.
(symlink_worker): Declare.
* exceptions.cc (set_process_mask): Just call sig_dispatch_pending and don't
worry about pending_signals since sig_dispatch_pending should always do the
right thing now.
(sig_handle): Reorganize SIGCONT handling to more closely conform to SUSv3.
* pinfo.h: Move __SIG enum to sigproc.h.
(PICOM_FIFO): New enum element.
(_pinfo): Remove 'thread2signal' stuff throughout class.
(_pinfo::commune_send): Make varargs.
(_pinfo::sigtodo): Eliminate.
(_pinfo::thread2signal): Ditto.
* signal.cc (kill_worker): Eliminate call to setthread2signal.
* sigproc.cc (local_sigtodo): Eliminate.
(getlocal_sigtodo): Ditto.
(sigelem): New class.
(pending_signals): New class.
(sigqueue): New variable, start of sigqueue linked list.
(sigcatch_nonmain): Eliminate.
(sigcatch_main): Eliminate.
(sigcatch_nosync): Eliminate.
(sigcomplete_nonmain): Eliminate.
(pending_signals): Eliminate.
(sig_clear): Call signal thread to clear pending signals, unless already in
signal thread.
(sigpending): Call signal thread to get pending signals.
(sig_dispatch_pending): Eliminate use of pending_signals and just check
sigqueue.
(sigproc_terminate): Eliminate all of the obsolete semaphore stuff. Close
signal pipe handle.
(sig_send): Eliminate all of the obsolete semaphore stuff and use pipe to send
signals.
(getevent): Eliminate.
(pending_signals::add): New function.
(pending_signals::del): New function.
(pending_signals::next): New function.
(wait_sig): Eliminate all of the obsolete semaphore stuff. Use pipe to
communicate and maintain a linked list of signals.
* sigproc.h: Move __SIG defines here. Add __SIGPENDING.
(sig_dispatch_pending): Remove "C" specifier.
(sig_handle): Accept a mask argument.
* thread.cc: Remove signal handling considerations throughout.
* include/sys/dirent.h (dirent): Remvoe old_d_ino.
(DIR): Make __d_dirhash a 64 bit value. Remove __d_data and __d_u. Add
__flags.
* dir.cc (opendir_states): New enum.
(opendir): Clear new DIR __flags field.
(readdir): Fill in '.' and '..' entries if we hit EOF and we haven't seen them
already. Nuke setting of old_d_ino.
(rewinddir): Reset DIR __flags field.
(seekdir64): Ditto.
* fhandler_disk_file.cc (fhandler_cygdrive::fhandler_cygdrive): Remove special
handling of "." and ".." since they are now handled automatically.
cygerrno.h.
* include/cygwin/config.h (__DYNAMIC_REENT__): Define.
* include/cygwin/version.h: Bump API minor version.
* cygwin.din: Export __getreent
* cygerrno.h: Include errno.h. Fix places where _impure_ptr is used directly
to store the errno value.
* debug.cc (__set_errno): Ditto.
* errno.cc: Remove _RRENT_ONLY define to get errno.cc compiled.
* signal.cc: Rename _reent_clib to _REENT throughout.
* thread.h (reent_clib): Remove prototype.
* thread.cc (reent_clib): Rename reent_clib to __getreent. Return _impure_ptr
until MTinterface is initialized.
(reent_winsup): Fix a possible SEGV when _r == NULL. Return NULL instead.
* MTinterface::fixup_after_fork: Switch reent back to _impure_ptr to keep
signal handling running when fork is called from a thread other than the
mainthread.
whose second arguments are both the lenght and the return value.
* fhandler.cc (fhandler_base::read): Rework slightly to use second argument as
input/output. Tweak CRLF stuff.
(fhandler_base::readv): Accommodate fhandler_*::read changes.
* cygthread.h (cygthread::detach): Declare as taking optional handle argument.
(cygthread::detach): When given a handle argument, wait for the handle to be
signalled before waiting for thread to detach. Return true when signal
detected.
* pinfo.h (SIGCOMMUNE): New signal type.
(commune_result): New structure for commune functions.
(picom): New enum for commune functions.
(_pinfo::hello_pid): New. Pid who's communicating with me.
(_pinfo::tothem): New. Handle of communicating pipe.
(_pinfo::fromthem): Ditto.
(_pinfo::commune_recv): Declare.
(_pinfo::commune_send): Declare.
(_pinfo::alive): Declare.
(_pinfo::cmdline): Declare.
(_pinfo::lock): Declare.
* pinfo.cc (set_myself): Initialize new _pinfo lock.
(_pinfo::alive): Define. Determines if process still exists.
(_pinfo::commune_recv): Define. Receive info from another cooperating process.
(_pinfo::commune_send): Define. Send info to another cooperating process.
(_pinfo::cmdline): Define. Determine command line of a given process.
* include/sys/cygwin.h (CW_CMDLINE): Define.
*sigproc.cc (talktome): Communicate with any processes who want to talk to me.
(wait_sig): Honor __SIGCOMMUNE.
* fhandler.cc (fhandler_virtual::fixup_after_exec): Declare.
* fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc
since buffers don't need to be propagated to subprocesses.
* fhandler_registry.cc: Ditto.
* fhandler_virtual.cc: Ditto.
(fhandler_virtual::fixup_after_exec): Define.
* fhandler_process.cc: Ditto for malloc/free/realloc.
(process_listin): Add "cmdline".
(fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE.
* miscfuncs.cc (isalpha_array): New array populated with xor values for alpha
characters to switch from one case to another.
* string.h (cygwin_strcasematch): New asm implementation of case match.
* string.h (cygwin_nstrcasematch): New asm implementation of counted case
match.
may not end up in the pool.
(cygthread::new): Avoid race when checking for initialized. Add debugging
code.
* fhandler.cc (fhandler_base::raw_read): Add case for ERROR_INVALID_HANDLE due
to Win95 directories.
(fhandler_base::open): Handle errors due to Win95 directories.
(fhandler_base::close): Add get_nohandle () test.
(fhandler_base::set_close_on_exec): Ditto.
(fhandler_base::fork_fixup): Ditto.
(fhandler_base::lock): Change error code to Posix EINVAL.
(fhandler_base::dup): If get_nohandle (), set new value to INVALID_HANDLE_VALUE
instead of NULL.
* fhandler_disk_file.cc (fhandler_disk_file::fstat): Call fstat_by_name if
get_nohandle (). Remove extraneous element from strpbrk.
(fhandler_disk_file::open): Remove test for Win95 directory.
* fhandler_random.cc (fhandler_dev_random::open): Add set_nohandle ().
* fhandler_clipboard.cc (fhandler_dev_clipboard::open): Ditto.
* fhandler_zero.cc (fhandler_dev_zero::open): Ditto.
(fhandler_dev_zero::close): Delete.
* fhandler.h (class fhandler_dev_zero): Ditto.
(RegQueryInfoKeyA): Ditto.
* fhandler.h (fhandler_virtual::fill_filebuf): Change return type to bool.
(fhandler_proc::fill_filebuf): Ditto.
(fhandler_registry::fill_filebuf): Ditto.
(fhandler_process::fill_filebuf): Ditto.
(fhandler_registry::value_name): Add new member.
(fhandler_registry::close): Add new method.
(fhandler_process::p): Remove member.
* fhandler_proc.cc (fhandler_proc::open): Add set_nohandle after calling
superclass method. Check return value of fill_filebuf.
(fhandler_proc::fill_filebuf): Change return type to bool. Add return
statement.
* fhandler_process.cc (fhandler_process::open): Add set_nohandle after calling
superclass method. Remove references to p. Check return value of
fill_filebuf.
(fhandler_process::fill_filebuf): Change return type to bool. Don't use
dereference operator on p. Add return statement.
(fhandler_process::format_process_stat): Fix typo.
* fhandler_registry.cc: Add static open_key declaration.
(fhandler_registry::exists): Assume path is already normalised. Try opening
the path as a key in its own right first, before reverting to enumerating
subkeys and values of the parent key.
(fhandler_registry::fstat): Add additional code to return more relevant
information about the registry key/value.
(fhandler_registry::readdir): Explicitly set desired access when opening
registry key. Remove output of buf from debug_printf format string.
(fhandler_registry::open): Use set_io_handle to store registry key handle. Set
value_name member. Move code to read a value from the registry to
fill_filebuf. Add call to fill_filebuf.
(fhandler_registry::close): New method.
(fhandler_registry::fill_filebuf): Change return type to bool. Add code to
read a value from registry.
(fhandler_registry::open_key): Make function static. Use KEY_READ as desired
access unless this is the last path component. Check the return value of
RegOpenKeyEx for an error instead of hKey.
* fhandler_virtual.cc (fhandler_virtual::lseek): Check the return value of
fill_filebuf.
(fhandler_virtual::open): Remove call to set_nohandle.
(fhandler_virtual::fill_filebuf): Change return type to bool. Add return
statement.
* security.cc (get_nt_object_attribute): New function.
(get_object_attribute): New function.
* security.h (get_object_attribute): New function declaration.
* fhandler.h: Move fcntl.h include here.
(fhandler_base::set_flags): Accept supplied_bin argument. Make non-inlined.
* dtable.cc (dtable::init_std_file_from_handle): Just use binmode from pc.
(reset_to_open_binmode): Use set_flags.
* cygwin.din (open): Avoid newlib wrapper.
(read): Ditto.
(unlink): Ditto.
(write): Ditto.
* fhandler.cc (fhandler_base::set_flags): Accept supplied_bin argument. Make
binmode decisions here.
(fhandler_base::open): Avoid using pc if it is NULL. Eliminate binmode logic.
Just call set_flags with binmode argument.
(fhandler_base::init): Call set_flags with binmode argument.
* fhandler_clipboard.cc (fhandler_dev_clipboard::open): Ditto.
* fhandler_console.cc (fhandler_console::open): Ditto.
(fhandler_console::init): Force binary on open.
* fhandler_disk_file.cc (fhandler_disk_file::open): Don't set binmode here.
Let it happen in base class.
* fhandler_dsp.cc (fhandler_dev_dsp::open): Force binmode open. Set return
value appropriately if unable to open.
* fhandler_proc.cc (fhandler_proc::open): Make sure flags are set before
open_status.
* fhandler_process.cc (fhandler_process::open): Ditto.
* fhandler_registry.cc (fhandler_registry::open): Ditto.
* fhandler_random.cc (fhandler_dev_random::fhandler_dev_random): Ditto.
* fhandler_raw.cc (fhandler_dev_raw::open): Force O_BINARY by default.
* fhandler_serial.cc (fhandler_serial::init): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::open): Ditto.
(fhandler_pty_master::open): Ditto.
* fhandler_virtual.cc (fhandler_virtual::open): Ditto.
* fhandler_windows.cc (fhandler_windows::open): Ditto.
* fhandler_zero.cc (fhandler_dev_zero::open): Ditto.
* net.cc (fdsock): Ditto.
* path.cc (path_conv::check): Avoid checking for extension when error or
directory.
(set_flags): Set PATH_TEXT explicitly, when appropriate.
(mount_info::conv_to_win32_path): Use set_flags() to set path flags.
* path.h (PATH_TEXT): New enum.
(path_conv::binmode): Return appropriate constant based on binmode.
* pipe.cc (make_pipe): Set binmode to O_TEXT xor O_BINARY.
* syscalls.cc (setmode_helper): Make debugging message a little clearer.
(setmode): Set binmode via set_flags.
'ZwQueryVirtualMemory'.
* fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual
from int to size_t. Change type of position member from __off32_t to
__off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take
an __off64_t argument. Make lseek take an __off64_t argument. Add
fill_filebuf method to fhandler_virtual. Add fill_filebuf method to
fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf
method to fhandler_process. Add saved_pid and saved_p members to
fhandler_process.
* fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'.
(proc_fhandlers array): Ditto.
(fhandler_proc::open): Use fill_filebuf to flesh out the file contents.
(fhandler_proc::fill_filebuf): New method.
(fhandler_proc::format_proc_meminfo): Ditto.
(fhandler_proc::format_proc_stat): Ditto.
(fhandler_proc::format_proc_uptime): Ditto.
* fhandler_process.cc (process_listing): Add 'stat' and 'statm'.
(fhandler_process::fstat): Find the _pinfo structure for the process named in
the filename. Return ENOENT if the process is no longer around. Set the gid
and uid fields of the stat structure.
(fhandler_process::open): Store pid and pointer to _pinfo structure in
saved_pid and saved_p respectively. Use fill_filebuf to flesh out file
contents.
(fhandler_proc::fill_filebuf): New method.
(format_process_stat): New function.
(format_process_status): Ditto.
(format_process_statm): Ditto.
(get_process_state): Ditto.
(get_mem_values): Ditto.
* fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from
__off32_t to __off64_t.
(fhandler_registry::fill_filebuf): New method.
* fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from
__off32_t to __off64_t.
(fhandler_virtual::lseek): Ditto.
(fhandler_virtual::fill_filebuf): New method.
(fhandler_virtual::fhandler_virtual): Initialise fileid to -1.
* wincap.cc: Set flag has_process_io_counters appropriately.
* wincap.h: Add flag has_process_io_counters.
* fhandler_proc.cc (proc_listing): Add '.' and '..' to directory listing.
(fhandler_proc::open): Change use of mode to flags. If the file does not exist
already, fail with EROFS if O_CREAT flag is set. Change EROFS error to EACCES
error when writing to a file. Use cmalloc to allocate memory for filebuf.
(fhandler_proc::close): Use cfree to free filebuf.
(fhandler_proc::get_proc_fhandler): Properly detect attempts to access unknown
subdir.
* fhandler_process.cc (process_listing): Add '.' and '..' to directory listing.
(fhandler_process::open): Use cmalloc to allocate memory for filebuf.
(fhandler_process::close): Use cfree to free filebuf.
* fhandler_registry.cc (registry_listing): Add . and '..' to directory
listing.
(fhandler_registry::open): Move check for open for writing before open_key.
Use cmalloc to allocate memory for filebuf.
(fhandler_registry::close): Use cfree to free filebuf.
(fhandler_registry::telldir): Use lower 16 bits of __d_position as position in
directory.
(fhandler_registry::seekdir): Ditto.
* fhandler_virtual.cc (fhandler_virtual::write): Change EROFS error to EACCES
error.
(fhandler_virtual::open): Set the NOHANDLE flag.
(fhandler_virtual::dup): Add call to fhandler_base::dup. Allocate child's
filebuf using cmalloc. Copy filebuf from parent to child.
(fhandler_virtual::close): Use cfree to free filebuf.
(fhandler_virtual::~fhandler_virtual): Ditto.
(from Chris Faylor <cgf@redhat.com>).
(fhandler_registry::readdir): Add support for '.' and '..' files in
subdirectories of /proc/registry.
* path.cc (path_conv::check): Do not return ENOENT if a file is not found in
/proc.
path_conv name.
(fhandler_proc::open): Ditto.
* fhandler_process.cc (fhandler_process::fstat): Use fhandler name rather than
path_conv name.
(fhandler_process::open): Ditto.
* fhandler_registry.cc (fhandler_registry::fstat): Use fhandler name rather
than path_conv name.
(fhandler_registry::open): Ditto.
* path.cc (path_conv::check): Don't copy posix path when virtual.
(mount_info::conv_to_win32_path): Don't zero string when isproc. Just derive
normal windows path.
* path.h (path_conv::clear_normalized_path): Declare new method.
* path.cc (path_conv::clear_normalized_path): Define new method.
* dtable.cc (build_fhandler_from_name): Clear normalized path when finished to
conserve space.
Christopher Faylor
Robert Collins
Pierre Humblet
Corinna Vinschen