changelog-2000

cygwin, 著名的在win32下模拟unix操作系统的东东

	(_csbrk): Make logic for detecting when to alloc cognizant of
	initialization condition.
	(_cmalloc): Use a structure to hold bucket size and heap chain pointer.
	Store pointer to next freed block in bucket size location so that it
	will be easy to see if a block is allocated.
	(_cfree): Store pointer to next freed block in bucket size location.
	(_crealloc): Use macro to retrieve bucket size.
	(cygheap_init): Eliminate.
	(cygheap_fixup_in_child): Add second argument to determine if we were
	execed or not.  In execed case, walk the heap, cleaning up any orphaned
	blocks.
	* cygheap.h: Add a "MAX" value to cygheap_types.  Remove cygheap_init
	declaration.  Accommodate new argument to cygheap_fixup_in child.
	* fork.cc (fork): Accommodate extra argument to cygheap_fixup_in_child.
	* dcrt0.cc (dll_crt0_1): Ditto.  Remove call to cygheap_init.

Fri Sep 29 21:49:27 2000  Christopher Faylor <[e-mail]>

	* path.cc (symlink_info::check): Set executable bit for a file if the
	first two characters are 'MZ' to mirror spawn_guts check.

Sat Sep 30 03:34:00 2000  Corinna Vinschen <[e-mail]>

	* winsup.h: Add `winME' to os_type symbols.
	* dcrt0.cc (set_os_type): Identify Windows ME systems.
	* (host_dependent_constants::init): Care for winME.
	* uname.cc (uname): Ditto.

Thu Sep 28 01:46:00 2000  Corinna Vinschen <[e-mail]>

	* net.cc (get_ifconf): Code cleanup. Split. Call os dependent
	subfunctions instead.
	(get_9x_ifconf): New function for 9X systems, called by get_ifconf.
	(get_nt_ifconf): New function for NT systems, called by get_ifconf.
	(get_2k_ifconf): New function for W2K systems, called by get_ifconf.

Wed Sep 27 01:10:07 2000  Christopher Faylor <[e-mail]>

	* spawn.cc (spawn_guts): Attempt to accommodate archaic windows quoting
	mechanism when dealing with '\' and '"'.

Mon Sep 25 20:47:04 2000  Christopher Faylor <[e-mail]>

	* dcrt0.cc (quoted): Fix problem where ' quoted strings were skipped.
	* fhandler.h (fhandler_socket::~fhandler_socket): Delete declaration.
	* net.cc: Remove unnecessary "number_of_sockets" usage.
	(fhandler_socket::fhandler_socket): Ditto.
	(fhandler_socket::~fhandler_socket): Delete definition.
	* spawn.cc (spawn_guts): Force first argument passed to CreateProcess
	as a command line to be windows style.

2000-09-25  Christopher Faylor  <[e-mail]>

	* spawn.cc (av::dup_maybe): Make function void rather than void *.
	* environ.cc (environ_init): Remember to reparse CYGWIN if envp is
	supplied.
	* heap.cc (_sbrk): Remember frame for signal handling.
	* syscalls.cc (read_handler): Eliminate.
	(_read): Move read_handler code here.  Reorganize for one path through
	'ready_for_read'.

Tue Sep 19 09:46:36 2000  Christopher Faylor <[e-mail]>

	* spawn.cc (spawn_guts): Use actual program argument passed in for
	argv[0] as originally suggested by Kazuhiro Fujieda
	<[e-mail]>.

Mon Sep 18 23:17:19 2000  Christopher Faylor <[e-mail]>

	* path.h: Create new input path flag PATH_NEEDDIR.
	* path.cc (path::check): Detect trailing slash before converting to
	windows path.  Tell symlink_info::check to check for directory if one is
	found.
	(symlink_info::check): Set errno when path is not a directory if
	pflags & PATH_NEEDDIR.

Mon Sep 18 19:44:08 2000  Christopher Faylor <[e-mail]>

	* fhandler_tty.cc (fhandler_tty_slave::write): Correct typo which
	caused resetting of windows error to ERROR_IO_DEVICE to be ignored.

Mon Sep 18 17:15:37 2000  Kazuhiro Fujieda  <[e-mail]>

	* path.cc (mount_info::read_mounts): Don't delete mount entries of
	which mount points have the cygdrive prefix.
	* (mount_info::add_reg_mount): Properly catch errors on registry
	operations.
	* (mount_info::write_cygdrive_info_to_registry): Ditto.
	* (mount_info::del_reg_mount): Cosmetic changes to be consistent
	with other methods.
	* (mount_info::add_item): Check arguments more precisely.
	Increment nmounts only when registry operations succeed.

Sun Sep 17 22:18:39 2000  Christopher Faylor <[e-mail]>

	* exceptions.cc (interruptible): Return 0 if given an address in
	uncommitted memory.

2000-09-16  Egor Duda  <[e-mail]>

	* signal.cc (sleep): If interrupted by signal, return the
	requested time minus the time actually slept.

Fri Sep 15 22:30:40 2000  Christopher Faylor <[e-mail]>

	* exceptions.cc (handle_exceptions): Just "core dump" if SIGSEGV in
	signal thread.
	* external.cc (fillout_pinfo): Fix compiler warning.
	* sigproc.h: Eliminate special asm naming for sig_dispatch_pending.
	* sigproc.cc (sig_send): Remove debugging statements.

Wed Sep 13 14:56:47 2000  Christopher Faylor <[e-mail]>

	* spawn.cc (av): Hide 'calloced' field and limit cstrduping to class
	methods only.
	(spawn_guts): Use methods for manipulating most newargv stuff.

2000-09-13  Egor Duda  <[e-mail]>

	* child_info.h (child_info_spawn::~child_info_spawn): Avoid
	memory leaks in cygheap.
	* spawn.cc (spawn_guts): Ditto.

Wed Sep 13 14:28:03 2000  Christopher Faylor <[e-mail]>

	* dcrt0.cc (quoted): Return next character after a quoted string when
	not doing special quote processing.  Also ensure that non-NULL is
	returned in all circumstances.

Wed Sep 13 10:26:16 2000  Christopher Faylor <[e-mail]>

	* spawn.cc (spawn_guts): Ensure that argv[0] is correctly set to the
	full path when a script is detected.  Suggested by Kazuhiro Fujieda
	<[e-mail]>.

Tue Sep 12 22:33:30 2000  Christopher Faylor <[e-mail]>

	* external.cc (fillout_pinfo): Handle explicit pids correctly.

Tue Sep 12 14:37:32 2000  Christopher Faylor <[e-mail]>

	* path.cc (normalize_posix_path): Fix more slashdot madness.

Tue Sep 12 12:29:29 2000  Christopher Faylor <[e-mail]>

	* Makefile.in: Make clean target remove *.d.

Mon Sep 11 13:19:15 2000  Christopher Faylor <[e-mail]>

	* path.cc (normalize_posix_path): Correctly deal with a "." parameter.

Sun Sep 10 20:23:35 2000  Christopher Faylor <[e-mail]>

	* cygheap.cc (init_cheap): Just use any old address for the cygwin
	heap.
	* exceptions.cc (signal_exit): Don't terminate the main thread.  Just
	try to exit in this thread really quickly.
	* signal.cc (kill_pgrp): Fix typo which caused pinfo structure to be
	assigned incorrectly.

Sun Sep 10 12:40:49 2000  Christopher Faylor <[e-mail]>

	* dcrt0.cc (dll_crt0_1): Initialize thread and debug stuff before
	handling exec/fork.
	* dtable.cc (dtable::fixup_after_exec): Always clear out the read ahead
	buffer whether closing or adjusting.
	* path.cc (chdir): Avoid a compiler warning.

Sat Sep  9 23:29:17 2000  Christopher Faylor <[e-mail]>

	* path.cc (chdir): Use the full path for cwd_win32.  Consider attempts
	to chdir to strings of dots > 2 to be an error.  Pass 'dir' argument to
	cygcwd.set.
	(cwdstuff::set): Need to treat arguments from chdir differently.
	* path.h (cwdstuff): Add an argument to set.

Fri Sep  8 11:50:09 2000  Christopher Faylor <[e-mail]>

	* lib/_cygwin_crt0_common.cc: Add missing header files.

Thu Sep  7 23:07:21 2000  Christopher Faylor <[e-mail]>

	* sigproc.h (sigframe::set): Eliminate second argument.  Default bp to
	current frame pointer rather than using this within the function, which
	is unstable when this method is not inlined.
	* net.cc: Eliminate use of second argument to sigframe.set throughout.
	* select.cc (cygwin_select): Ditto.
	* sigproc.cc (sig_send): Ditto.

Thu Sep  7 22:45:16 2000  Christopher Faylor <[e-mail]>

	Break out more header info into separate files.  Use appropriate
	header files throughout.
	* shared.h: Remove.
	* cygwin_version.h: New file.
	* delqueue.h: New file.
	* environ.h: New file.
	* host_dependent.h: New file.
	* perprocess.h: New file.
	* registry.h: New file.
	* security.h: New file.

Thu Sep  7 12:14:43 2000  Christopher Faylor <[e-mail]>

	Split out tty and shared_info stuff into their own headers and use
	throughout.  Include sys/termios.h for files which need it.
	* tty.h: New file.
	* shared_info.h: New file.
	* fhandler.h: Move inline methods that rely on tty stuff to
	fhandler_console.cc.
	* fhandler_tty.cc (fhandler_pty_master::process_slave_output): Set
	output_done_event immediately after reading data to speed up tty output
	processing.
	(process_output): Set write_error to errno or zero.
	(fhandler_tty_slave::write): Check previous write error prior to
	writing to slave end of pipe.  This allows tty output to be slightly
	less synchronous.
	* fhandler_console.cc (fhandler_console::tcsetpgrp): Moved here from
	fhandler.h.
	(fhandler_console::set_input_state): Ditto.

Wed Sep  6 21:11:13 2000  Christopher Faylor <[e-mail]>

	* exceptions.cc (signal_exit): Reset all mutos owned by the main
	thread.
	* fhandler.h: Define *_output_mutex macros for serializing tty output.
	(fhandler_termios): Remove restart_output_event.  Define dummy output
	mutex methods.
	(fhandler_pty_master): Remove unneeded fixup_after_fork method.
	* fhandler_termios.cc (fhandler_termios::line_edit): Acquire
	output_mutex when CTRL-S is hit.  Release it on CTRL-Q.
	* fhandler_tty.cc (fhandler_pty_master::process_slave_output): Remove
	inappropriate OutputStopped test here.  Just use the output mutex.
	(fhandler_pty_master::fhandler_pty_master): Remove obsolete reference
	to restart_output_event.
	(fhandler_tty_common::close): Ditto.
	(fhandler_pty_master::set_close_on_exec): Ditto.
	(fhandler_pty_master::fixup_after_fork): Delete.
	* tty.cc (tty::common_init): Ditto.
	* sync.cc (muto::reset): New method.
	* sync.h: Declare above method.

Wed Sep  6 16:56:38 2000  Christopher Faylor <[e-mail]>

	* sigproc.cc: Add include file for proper definitions.
	* spawn.cc: Ditto.
	* winsup.h: Define cfree to avoid newlib pollution.

Wed Sep  6 14:11:51 2000  Christopher Faylor <[e-mail]>

	* Makefile.in (CFLAGS): Ensure that -MD is always added even when
	CFLAGS is overwritten.

Wed Sep  6 02:40:12 2000  Christopher Faylor <[e-mail]>

	* path.cc (cwdstuff::get_initial): Keep caching alive.
	(mount_info::conv_to_win32_path): Fill out relative path in failing
	case.

Tue Sep  5 21:36:15 2000  Christopher Faylor <[e-mail]>

	* path.cc (normalize_posix_path): Deal with error return from cygcwd.get.
	(normalize_win32_path): Ditto.
	(mount_info::conv_to_win32_path): Ditto.
	(cwdstuff::get): Set buf to NULL on error.

Tue Sep  5 17:49:34 2000  Christopher Faylor <[e-mail]>

	* path.cc (readlink): 'max' should be a 'min' or we'll suffer
	buffer overflow.

Mon Sep  4 22:53:58 2000  Christopher Faylor <[e-mail]>

	* path.cc (cwd_win32): Eliminate.
	(cwd_posix): Eliminate.
	(cwd_hash): Eliminate.
	(cwdstuff::init): Rename from cwd_init.
	(cwdstuff::fixup_after_exec): Rename from cwd_fixup_after_exec.
	(cwdstuff::get): Rename from get_cwd_inner.
	(normalize_posix_path): Eliminate cwd argument.  Just calculate when
	necessary.
	(normalize_win32_path): Ditto.
	(mount_info::conv_to_win32_path): Eliminate cwd retrieval here.
	(mount_info::conv_to_posix_path): Ditto.
	(hash_path_name): Accommodate additional methods in cwdstuff.
	(get_cwd_win32): Eliminate.
	(getcwd): Use cwdstuff methods.  Properly handle case where buf == NULL
	and len < 0.
	(cwdstuff::get_hash): New method.
	(cwdstuff::get_initial): New method.
	(cwdstuff::set): New method.
	(cwdstuff::get): New method.
	(cwdstuff::copy): New method.
	* path.h: Move cwdstuff struct here.  Add a bunch of stuff to cwdstuff.
	Make cygcwd an extern.
	* spawn.cc (spawn_guts): Use copy method to get copies of cwd info to
	pass to execed process.
	* dcrt0.cc (dll_crt0_1): Use cygcwd methods for cwd initialization.

2000-09-03  Egor Duda  <[e-mail]>

	* path.cc (readlink): Check if buffer length is positive.
	Truncate output to buffer length. Don't terminate buffer
	with '\0'.

Sun Sep  3 00:38:40 2000  Christopher Faylor <[e-mail]>

	* environ.cc (environ_init): Don't free the new environment table after
	we've just copied stuff to it.

Sun Sep  3 00:07:32 2000  Christopher Faylor <[e-mail]>

	* Makefile.in: Add cygheap.o.
	* child_info.h: Add specific exec class.
	* cygheap.h: New file.  Contains declarations for cygwin heap.
	* cygheap.cc: New file.  Implements cygwin heap functions.
	* dcrt0.cc (quoted): Simplify due to new method for passing arguments
	between cygwin programs.
	(alloc_stack_hard_way): Attempt to handle overlapped stack.
	(dll_crt0_1): Move child_info processing here.  Accommodate new method
	for passing arguments between cygwin programs.  Initialize cygwin heap.
	Establish __argc and __argv variables.
	(_dll_crt0): Move most of child_info processing to dll_crt0_1.
	(cygwin_dll_init): Remove duplication.
	* dtable.cc (dtable::extend): Allocate dtable using cygwin heap.
	(dtable::build_fhandler): Ditto for fhandler type being constructed.
	(dtable::dup_worker): Free new fhandler from cygwin heap on error.
	(dtable::select_*): Don't assume that this == fdtab.
	(dtable::linear