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* * dtable.cc (dtable::delete_archetype): Improve debugging output.Christopher Faylor2011-10-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | (dtable::init_std_file_from_handle): Close console handle early, before initialization. Build up openflags for passing to open_setup, just to be safe. (last_tty_dev): New variable. (fh_last_tty_dev): New macro. (fh_alloc): Try again to keep track of previously opened tty, this time by just saving the device and using that to potentially open an archetype. Avoid setting the "/dev/tty" name if the creation of the fhandler failed. (build_fh_pc): Remove unused second argument. Reorganize how and where the name is set. Set last_tty_dev as appropriate. Avoid a NULL dereference in a debug printf. * dtable.h (build_fh_pc): Reflect removal of second parameter. * fhandler.cc (fhandler_base::reset): Use new '<<' operator to copy pc since it preserves any potentially previously set name. (fhandler_base::set_name): Ditto. * fhandler.h (fhandler_*::clone): Throughout use ccalloc to allocate new fhandler, primarily to make sure that pc field is properly zeroed. (fhandler_termios::last): Eliminate. (fhandler_termios): Remove setting of last. (fhandler_base::~fhandler_termios): Ditto. * fhandler_console.cc (fhandler_console::open): Don't make decisions about opening close-on-exec handles here since it makes no sense for archetypes. (fhandler_console::init): Assume that input handle has already been opened. * fhandler_termios.cc (fhandler_termios::last): Delete. * path.h (path_conv::eq_worker): New function. Move bulk of operator = here. (operator <<): New function. (operator =): Use eq_worker to perform old functionality.
* * cygerrno.h (__set_errno): Modify debugging output to make searching straceChristopher Faylor2011-10-151-16/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | logs easier. Throughout, change /dev/tty* to /dev/pty*. Throughout, add flags argument to fhandler_*::dup methods. * devices.in: Rename (temporarily?) /dev/ttyN to /dev/ptyN. Add /dev/ptymN devices for pty masters. * devices.cc: Regenerate. * devices.h (MAX_CONSOLES): Set to max number supported by devices.in. (fh_devices::FH_PTMX): Rename from FH_PTYM. (device::operator int): Return by reference. * dtable.cc (fh_alloc): Take pc as an argument rather than just the device. This makes debugging easier since more information is available. Actually implement handling for already-allocated pty master devices. Make different decisions when generating fhandler for not-opened devices. Add kludge to deal with opening /dev/tty. (cnew_no_ctor): New macro. (build_fh_pc): Make debugging output more verbose. Use new clone() fhandler interface to duplicate archetypes. Reset last term opened. (dtable::dup_worker): Use Use new clone() fhandler interface to duplicate archetypes. Pass flags to child dup handler. (dtable::dup3): Set O_NOCTTY flag if newfd is not stdin/stdout/stderr. * fhandler.cc (fhandler_base::reset): Rename from operator =() and reduce functionality and sense of copy direction. (fhandler_base::open_with_arch): Use published interface to query io_handle(). Use new copyto() fhandler method to copy from/to found archetype. * fhandler.h: Throughout, delete size(), add copyout, clone, and fhandler_* (void *) methods. (fhandler_base::reset): Rename from operator =(). (fhandler_termios::is_dev_tty): Delete. (fhandler_termios): change "protected" region to "private". (fhandler_termios::is_dev_tty): Delete. (fhandler_termios): Rearrange protected/public. (fhandler_termios::fhandler_termios): Remember last fhandler_termios "opened". (fhandler_termios::~fhandler_termios): Forget last fhandler_termios opened. (ioctl): Rename from ioctl_termios. Take a void * argument. Reflect argument change in pinfo::set_ctty. (fhandler_console::dup): Declare new function. Set ctty here if appropriate. (fhandler_pty_master::from_master): Privatize. (fhandler_pty_master::to_master): Ditto. (fhandler_pty_master::dwProcessId): Ditto. (fhandler_pty_master::fhandler_pty_master): Add an `int' argument. (fhandler_pty_master::open_setup): Declare new function. (fhandler_pty_master::~fhandler_pty_master): Declare new method. (fhandler_nodevice): Remove commented out function declaration. * fhandler_console.cc: Use get_ttyp() instead of tc() throughout. (fhandler_console::dup): Define new function to set controlling ctty on dup, as appropriate. (fhandler_console::ioctl): Reflect ioctl_termios name change. (fhandler_console::setup): Rename from get_tty_stuff. (fhandler_console::open_setup): Reflect argument change in pinfo::set_ctty. (fhandler_console::fhandler_console): Set _tc here. * fhandler_termios.cc (handler_termios::ioctl): Rename. Take a void * arg like other ioctl functions. * fhandler_tty.cc (fhandler_pty_slave::dup): Call myself->set_ctty to potentially reset the controlling terminal. (fhandler_pty_slave::ioctl): Reflect name/arg change for ioctl_termios. (fhandler_pty_slave::fhandler_pty_slave): Take a "unit" argument. Call setup() here so that we will know the unit number of this fhandler as soon as possible. Set the unit as appropriate. (handler_pty_master::open): Move most stuff to constructor and open_setup. (handler_pty_slave::open_setup): Reflect argument change in pinfo::set_ctty. (handler_pty_master::open_setup): Define new function. (fhandler_pty_master::cleanup): Clear handles as a flag that the destructor does not have to do "close" operations. (fhandler_pty_master::close): Ditto. (fhandler_pty_master::~fhandler_pty_master): Define new method. (fhandler_pty_master::ioctl): Reflect name/arg change for ioctl_termios. (fhandler_pty_master::setup): Allocate tty here. Rely on handles being returned from allocated test rather than opening them here. Avoid setting _need_nl here since it is already zeroed in the constructor. Set up device information with DEV_TTYM_MAJOR. * path.h (path_conv &operator =): Take a const argument. (path_conv::dup): Ditto. (pathconv_arg::PC_OPEN): New enum. (pathconv_arg::PC_CTTY): Ditto. (path_types::PATH_CTTY): Ditto. (path_types::PATH_OPEN): Ditto. (path_conv::isopen): New method. (path_conv::isctty_capable): Ditto. * path.cc (path_conv::check): Set PATH_OPEN and PATH_CTTY as appropriate. * pipe.cc (fhandler_pipe::open): Use copyto to copy pipe handle. * syscall.cc (open): Reinstate fd > 2 check to disallow resetting ctty on non-std* handles. * tty.cc (tty_list::allocate): Pass out handles for allocated tty. use `not_allocated' to find unallocated ttys. Avoid keeping the lock since the allocation of the tty should be sufficient to prevent multiple access. (tty::not_allocated): Clarify comment. Rename. Return handles when an unused tty is found. Simply test for existing tty. (tty::exists): Rewrite to use `not_allocated'. * tty.h (NTTYS): Reset down to actual number supported by devices.in. (tty::not_allocated): Declare new function. (tty_list::allocate): Pass out read/write tty handles. Zero them when not found. * fhandler_proc.cc: Reflect name change from FH_PTYM -> FH_PTMX. * pinfo.h (pinfo::set_ctty): Reduce/reorder arguments passed in. * pinfo.cc (pinfo::set_ctty): Ditto. Just use tc() built into the passed-in fhandler_termios pointer. Return true if ctty is assigned. * syscalls.cc (open): Call build_fh_pc with PC_OPEN flag. Set PC_CTTY if appropriate. (stat_worker): Remove is_dev_tty () stuff.
* * fhandler_console.cc (fhandler_console::cursor_set): Disable forcingCorinna Vinschen2011-10-121-1/+11
| | | | y to the current winBottom position. Explain why.
* * cygwin.din: Remove some _tc* exports. Add tcgetsid().Christopher Faylor2011-10-111-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * dtable.cc (fh_alloc): Revert ill-advised setting of major/minor. Use new is_dev_tty to remember that this device was opened as /dev/tty. * fhandler.cc (fhandler_base::fstat): Remove leftover debugging statement. (fhandler_base::tcgetsid): New function. * fhandler.h ((fhandler_base::tcgetsid): Declare new function. (fhandler_base::is_dev_tty): Ditto. (fhandler_termios::opened_as_dev_tty): Declare new field. (fhandler_termios::is_dev_tty): Declare new function. (fhandler_termios::tcgetsid): Ditto. (fhandler_pty_common::use_archetype): Move here from subclass. (fhandler_pty_slave::use_archetype): Move up. (fhandler_pty_master::use_archetype): Ditto. * fhandler_console.cc (fhandler_console::ioctl): Rename second argument from `buf' to `arg' for consistency. Call ioctl_termios for common fhandler_termios ioctl handling. * fhandler_tty.cc (fhandler_pty_slave::ioctl): Call ioctl_termios for common fhandler_termios ioctl handling. (fhandler_pty_master::ioctl): Ditto. * fhandler_termios.cc (fhandler_termios::tcgetsid): Implement new function. (fhandler_termios::ioctl_termios): Ditto. Implements TIOCSCTTY handling. * syscalls.cc (stat_worker): Set /dev/tty device info when appropriate. * termios.cc (tcgetpgrp): Avoid extraneous "isatty" check. (tcgetsid): Implement new function. * include/cygwin/version.h: Bump CYGWIN_VERSION_API_MINOR to 253. * include/sys/termios.h (TIOCSCTTY): Define.
* * dtable.cc: Mark some const variables as static.Christopher Faylor2011-08-191-1/+1
| | | | | | | | | | * environ.cc (conv_start_chars): Move to shared cygwin region and initialize at compile time. (match_first_char): New generic function for querying conv_start_chars. (posify_maybe): Rename from posify. (environ_init): Remove conv_envvars initialization. Don't check conv_start_chars, just allow posify_maybe to make the decision. * fhandler_console.cc (__vt100_conv): Fix formatting. Mark as const.
* * fhandler_console.cc (fhandler_console::read): Recognize backspace keyCorinna Vinschen2011-08-191-1/+1
| | | | | using the device independent key code, rather than the device dependent scan code.
* * fhandler_console.cc (fhandler_console::ioctl): Fetch console eventsCorinna Vinschen2011-07-251-3/+11
| | | | | | | using PeekConsoleInput and return only key down events in buf. * fhandler_tty.cc (fhandler_pty_slave::ioctl): Always return EINVAL if PeekNamedPipe fails. (fhandler_pty_master::ioctl): Ditto.
* * fhandler_tty.cc (fhandler_pty_slave::ioctl): Drop FIONBIO case.Corinna Vinschen2011-07-221-5/+15
| | | | | | | Handle FIONREAD. (fhandler_pty_master::ioctl): Ditto. Call fhandler_base::ioctl to decode default condition. * fhandler_console.cc (fhandler_console::ioctl): Handle FIONREAD.
* * fhandler_console.cc (fhandler_console::input_tcsetattr): Revert toCorinna Vinschen2011-07-141-2/+4
| | | | | | setting ENABLE_PROCESSED_INPUT depending on ISIG and IGNBRK. (fhandler_console::tcgetattr): Set ISIG depending on ENABLE_PROCESSED_INPUT as well.
* * fhandler_console.cc (fhandler_console::input_tcsetattr): MakeCorinna Vinschen2011-07-051-3/+3
| | | | | | ENABLE_PROCESSED_INPUT flag only depending on value of IGNBRK. (fhandler_console::tcgetattr): Don't set ISIG depending on ENABLE_PROCESSED_INPUT, set IGNBRK instead.
* * fhandler_console.cc (fhandler_console::read): Add comment.Corinna Vinschen2011-06-301-1/+2
| | | | | (fhandler_console::input_tcsetattr): Don't set ENABLE_PROCESSED_INPUT if IGNBRK flag is set.
* * fhandler_console.cc (fhandler_console::read): Don't generate ^@ onCorinna Vinschen2011-06-241-1/+2
| | | | Ctrl+Alt+Space.
* * fhandler_console.cc (fhandler_console::set_unit): Set pc.file_attributes() toChristopher Faylor2011-06-161-0/+2
| | | | | | reflect existence. * fhandler.h (fhandler_pty_common::fhandler_pty_common): Ditto. * pinfo.cc (_pinfo::set_ctty): Output device numbers in hex.
* * cygheap.h (init_cygheap::ctty_on_hold): Remove conditionalized variable.Christopher Faylor2011-06-141-15/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * dcrt0.cc (do_exit): Remove code which handled CYGWIN=tty style ttys. * devices.in: Remove "/dev/ttym". * dtable.cc: Rename tty to pty where appropriate throughout. (dtable::stdio_init): Use new t->is_console rather than using now-deleted hwnd element in tty structure. (dtable::init_std_file_from_handle): Remove code which handled CYGWIN=tty style ttys. (fh_alloc): Ditto. * fhandler.h: Rename tty to pty where appropriate. (fhandler_pty_common): Delete output_done_event, ioctl_request_event, ioctl_done_event. (fhandler_pty_master::setup): Delete argument. (fhandler_tty_master): Delete. (fhandler_union): Delete __tty_master. * fhandler_console.cc (use_tty): Delete. (fhandler_console::get_tty_stuff): Set is_console to true rather than calling sethwnd. (fhandler_console::send_winch_maybe): Remove CYGWIN=tty considerations. (fhandler_console::input_tcsetattr): Ditto. * fhandler_termios.cc (fhandler_termios::tcsetpgrp): Use new t->is_console rather than using now-deleted hwnd element in tty structure. * fhandler_tty.cc: Rename tty to pty where appropriate throughout. (tty_master): Delete. (process_input): Ditto. (process_output): Ditto. (process_ioctl): Ditto. (fhandler_tty_master::*): Ditto. (fhandler_pty_master::process_slave_output): Remove CYGWIN=tty considerations. (fhandler_pty_slave::open): Ditto for *_done_event. (fhandler_pty_slave::write): Ditto. (fhandler_pty_slave::ioctl): Ditto. (fhandler_pty_slave::fch_open_handles): Ditto. (fhandler_pty_slave::fch_set_sd): Ditto. (fhandler_pty_slave::fch_close_handles): Ditto. (fhandler_pty_common::close): Ditto. (fhandler_pty_master::setup): Ditto. Remove now-unneeded ispty parameter. (fhandler_pty_master::open): Reflect argument removal for tty::allocate. * select.cc: Rename tty to pty where appropriate throughout. * sigproc.cc (proc_subproc): Remove CYGWIN=tty considerations. * tty.cc (ttyslot): Accommodate CYGWIN=tty removal. (tty_list::init_session): Ditto. (tty_list::attach): Ditto. (tty::create_master): Delete. (tty_list::terminate): Ditto. (tty_list::allocate): Delete "with_console" parameter. Remove CYGWIN=tty considerations. (tty::init): Set is_console = false. Use 'false' for was_opened since it is a boolean. * tty.h (*_{DONE,REQUEST}_EVENT): Delete. (tty_min::is_console): Declare new field which replaces hwnd. (tty_min::gethwnd): Delete. (tty_min::sethwnd): Ditto. (tty_list::allocate): Delete parameter. (tty_list::terminate): Delete declaration. * include/sys/cygwin.h (PID_USETTY): Redefine to PID_UNUSED1 and change comment to reflect its availability.
* Rename FH_BAD to FH_NADA throughout.Christopher Faylor2011-06-121-8/+24
| | | | | | | | | | | | | | | | | | * devices.h (FH_ERROR): New value. (iscons_dev): Extend to detect all the console device types. * devices.in: Set aside storage for FH_ERROR. * dtable.cc (dtable::init_std_file_from_handle): Use iscons_dev to detect when device is a console. (fh_alloc): Pass device to console constructor. (build_fh_pc): Short circuit when we detect that the constructor saw an error. * fhandler.h (fhandler_console::fhandler_console): Accept fh_devices parameter. (get_tty_stuff): Change to void. * fhandler_console (fhandler_console::set_unit): Set device to FH_ERROR on attempt to access anything other than the current console. (fhandler_console::get_tty_stuff): Change to void return. (fhandler_console::open): Return EPERM on FH_ERROR device type. (fhandler_console::fhandler_console): Set the device type appropriately before calling get_tty_stuff and rely on that function to reset it if necessary.
* * child_info.h (CURR_CHILD_INFO_MAGIC): Reset.Christopher Faylor2011-06-091-5/+1
| | | | | | | | | | | | | | | | (child_info::old_title): Delete. (child_info::~child_info_spawn): Remove recording of old_title. * dcrt0.cc (title_buf): Delete. (child_info_spawn::handle_spawn): Remove recording of old_title. (dll_crt0_1): Get rid of all title handling. (do_exit): Ditto. * environ.cc (known): Delete strip_title and title. * fhandler_console.cc (fhandler_console::write): Remove recording of old_title. * globals.cc (exit_states): Remove ES_TITLE. (display_title): Delete. (strip_title_path): Delete. (old_title): Delete. * spawn.cc (spawn_guts): Remove old_title accommodation.
* * fhandler_console.cc (fhandler_console::open_shared_console): Semi-revert toChristopher Faylor2011-06-071-2/+2
| | | | | | using fixed location for console stuff. * shared.cc (offsets): Ditto. Comment. * shared_info (shared_locations): Re-add SH_SHARED_CONSOLE.
* whitespace eliminationChristopher Faylor2011-06-061-20/+20
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* * fhandler_console.cc (fhandler_console::open_shared_console): Don't zeroChristopher Faylor2011-06-051-2/+1
| | | | | | | handle to open_shared since it is supposed to be an input. (enum_windows): Set handle input to open_shared to NULL since it does not represent any previously opened shared region. * shared.cc (open_shared): Tweak debugging output.
* * fhandler.cc (fhandler_base_overlapped::wait_overlapped): Only raise SIGPIPEChristopher Faylor2011-06-041-315/+317
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | when writing. * fhandler.h: Include "tty.h". (fhandler_termios::_tc): Rename from tc. (fhandler_termios::tc): New method. (fhandler_termios::tcinit): Remove an argument. (fhandler_termios::get_ttyp): Use method to retrieve value. (fhandler_console::console_state): Move here. (fhandler_console::dev_state): Delete. (fhandler_console::shared_console_info): Define. (fhandler_console::open_shared_console): Move this function under fhandler_console umbrella. (fhandler_console::tc): Define. Return static value. (fhandler_console::focus_aware): Accommodate deletion of dev_state. (fhandler_console): Add tty_list::get_cttyp as a friend. * fhandler_console.cc (dev_state): Redefine as a pointer within shared_console_info and change dev-> to dev. throughout. (fhandler_console::shared_console_info): Move into fhandler_console. (fhandler_console::open_shared_console): Move into fhandler_console change argument to simple bool. (enum_windows): Accommodate changes to console_state and open_shared_console. (console_unit::console_unit): Ditto. (fhandler_console::get_tty_stuff): Accommodate change to dev_state. (tty_list::get_cttyp): Accommodate change to handler_console::shared_console_info. (fhandler_console::read): Accommodate change from tc to tc (). (fhandler_console::set_input_state): Ditto. (fhandler_console::open): Accommodate tcinit argument change and change from tc to tc(). (fhandler_console::input_tcsetattr): Accomodate change from tc to tc(). (fhandler_console::input_tcsetattr): Ditto. (fhandler_console::write_normal): Ditto. (fhandler_console::init): Ditto. (fhandler_console::igncr_enabled): Ditto. * fhandler_termios.cc (fhandler_termios::tcinit): Remove first argument. Expect tc() to have been set up first. Use tc() rather than tc. (fhandler_termios::tcsetpgrp): Accomodate change from tc to tc(). (fhandler_termios::tcgetpgrp): Ditto. (fhandler_termios::bg_check): Ditto. (fhandler_termios::line_edit: Ditto. (fhandler_tty_master::set_winsize): Ditto. (fhandler_tty_slave::open): Ditto. (fhandler_tty_slave::init): Ditto. (fhandler_pty_master::write): Ditto. (fhandler_pty_master::setup): Ditto. Accommodate change in arguments to tcinit. (fhandler_tty_slave::fch_open_handles): Set _tc directly. (tty_min::is_orphaned_process_group): Don't assume that parent pid exists. * pinfo.cc (_pinfo::set_ctty): Reset myself->{pgid,sid} here if we were started by a non-Cygwin process but the tty exists. * shared_info.h (console_state): Delete from here. * tty.h: Make multiple inclusion safe.
* * exceptions.cc (ctrl_c_handler): Simplify test for no parent tty.Christopher Faylor2011-06-011-5/+3
| | | | | * fhandler_console.cc (fhandler_console::get_tty_stuff): Return NULL if ctty is not tty/console. Improve test for slave tty/pty device.
* * autoload.cc: Call _api_fatal in asm.Christopher Faylor2011-05-281-47/+111
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * child_info.h: Redefine CURR_CHILD_INFO_MAGIC. (child_info_fork::abort): Rename from handle_failure. Change arguments. * cygtls.h (_local_storage::ttybuf): New field. * dcrt0.cc (vapi_fatal): Split api_fatal. Add "in forked process" to message when appropriate. (api_fatal): Use vapi_fatal. * devices.h: Make multiple inclusion safe. (fh_devices): Add FH_CONS* stuff. Reorder slightly. (device): Eliminate anonymous union. Add more ways to access minor/major. (device::setunit): Accommodate no-longer-anonymous union. (device::is_fs): Ditto. (device::is_fs_special): Ditto. (device::major): New function. (device::minor): Ditto. (device::is_device): New function. (device::not_device): Ditto. (device::operator int): New operator. (device::operator fh_devices): Ditto. (device::operator bool): Ditto. (device::operator DWORD): Ditto. (device::operator =): Ditto. (isproc_dev): New function. (isprocsys_dev): Ditto. (iscons_dev): Ditto. (istty_slave_dev): Ditto. * devices.in: Add new "/dev/cons*" strings. Accommodate no-longer-anonymous union throughout. (BRACK): Use more precise method for initialization. * devices.cc: Regenerate. * dtable.cc (dtable::stdio_init): Use get_cttyp instead of get_tty. (dtable::find_archetype): Use new DWORD operator in device to test archetypes. (dtable::init_std_file_from_handle): Use different method to initialize 'dev'. Adapt to different ctty handling and accommodate /dev/cons*. (fh_alloc): Accommodate no-longer-anonymous union. Adapt to new /dev/cons*. (build_fh_pc): Make debugging output more useful. * exceptions.cc (ctrl_c_handler): Use get_cttyp instead of get_tty. * external.cc (fillout_pinfo): Accommodate new cons* stuff. * fhandler.cc (fhandler_base::read): Eliminate is_slow() test. * fhandler.h (fhandler_base::*): Adapt to changes in device.h. (fhandler_*::is_slow): Delete. ( fhandler_proc::get_proc_fhandler): Return fh_devices type. * fhandler_console.cc (open_shared_console): New function. (console_unit): New class. (console_unit::console_unit): New constructor. (enum_windows): New function. Declare as friend to console_unit. (fhandler_console::set_unit): New function. (fhandler_console::get_tty_stuff): Call set_unit to set the unit number and determine if initialization is needed. Eliminate flags parameter. (tty_list::get_cttyp): Rename (sorta) from get_tty. Return pointer to correct tty_min. (fhandler_console::open): Adapt to elimination of argument to get_tty_stuff. (fhandler_console::output_tcsetattr): Properly detect error condition. (fhandler_console::fixup_after_fork_exec): Adapt to get_tty_stuff() setting tc automatically. * fhandler_proc.cc: Use FH_BAD rather than 0 throughout where using fh_devices enum. (fhandler_proc::get_proc_fhandler): Return fh_devices. Adapt to devices.h changes. * fhandler_process.cc: Adapt to devices.h changes. Use FH_BAD rather than 0 throughout where using fh_devices enum. * fhandler_procnet.cc: Ditto. * fhandler_procsys.cc: Ditto. * fhandler_procsysvipc.cc: Ditto. * fhandler_tape.cc (fhandler_dev_tape::fhandler_dev_tape): Ditto. * fhandler_termios.cc (handler_termios::bg_check): Use tc->ttyname() rather than assuming that we can construct a tty. * fhandler_tty.cc (fhandler_tty_master::fhandler_tty_master): Just return get_minor() of dev. (fhandler_pty_master::process_slave_output): Add slightly more debugging info. (fhandler_tty_slave::fhandler_tty_slave): Change name from ntty to unit. (fhandler_pty_master::open): Ditto. (fhandler_tty_slave::ioctl): Adapt to change which causes ctty to represent a complete device. (fhandler_tty_master::init_console): Add debugging for failure path. (fhandler_pty_master::setup): Use get_unit() to retrieve unit number rather than relying on raw ntty. (fhandler_pty_master::setup): Ditto. * fhandler_virtual.h (virt_tab_t): Redefine fhandler as fh_devices. * fork.cc: Remove obsolete vfork stuff. (frok::child): Don't assume that a ctty == 0 is valid. * mount.cc (mount_info::conv_to_win32_path): Adapt to device struct changes. (mount_info::conv_to_win32_path): Ditto. * path.cc (path_conv::check): Retrive major/minor numbers via a method rather than accessing them directly from device. Rely on dev operators to set/retrieve device information as required by device struct change. * path.h (isproc_dev): Move to devices.h. (isprocsys_dev): Ditto. (isvirtual_dev): Ditto. (path_conv:{isdevice,isfifo,isspecial,iscygdrive,issocket,get_devn,get_unitn}): Use device methods to access/manipulate devices. * pinfo.cc (pinfo::exit): Don't assume that ctty == 0 is valid. Use iscons_dev to determine if a device is a console. (_pinfo::_ctty): Use device::parse to generate tty/cons name. (_pinfo::set_ctty): Don't assume that ctty == 0 is valid. Remove redundant info from debugging. * shared.cc (offsets): Remove console offset. * shared_info.h (shared_locations): Ditto. * syscalls.cc (umask): Use device methods to manipulate device information. (ctermid): Use device::parse to generate term device name. * tlsoffsets.h: Regenerate. * tty.cc (ttyslot): Return minor number of ctty since ctty now represents a full device. (tty::create_master): Set ctty to a complete device. (tty_list::attach): Rework to detect new /dev/cons* stuff. (tty_list::terminate): Adapt to changes to ctty. (tty_list::init): Adapt to change to setntty - pass in device major number. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Define new function. * tty.h (tty_min::ntty): Redefine as fh_devices. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Declare new function. (tty::getntty): Declare as const. (tty_list::operator []): Assure that only minor part of argument is used. * dll_init.cc (dll_list::alloc): Detect mismatch of data segments early issuing an explicit error message if necessary. * heap.cc (heap_init): Adapt to changes from fork->handle_failure to fork->abort. * pinfo.h (EXITCODE_FORK_FAILED): New enum. (from Ryan Johnson) * sigproc.cc (child_info_fork::abort): Rename from handle_failure. Change arguments to allow passing in a printf-like message. * winsup.h (api_fatal): Delete macro definition. (api_fatal): Redefine from __api_fatal. (vapi_fatal): Declare new function. * include/sys/strace.h (strace_vprintf): Define new macro. * ntdll.h (_SYSTEM_INFORMATION_CLASS): Add SystemHandleInformation.
* * fhandler.cc (fhandler_base::dup): Avoid duping a handle when an fhandler hasChristopher Faylor2011-05-061-4/+3
| | | | | | | an archetype. * fhandler_console.cc (fhandler_console::invisible_console): Move to the top. (fhandler_console::set_close_on_exec): Don't set close-on-exec on handle since it's an archetype and you don't know how many things could be using it.
* * cygheap.cc (cygheap::close_ctty): Close ctty via close_with_arch().Christopher Faylor2011-05-051-37/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * debug.cc (close_handle): Call debugger on failure. * devices.in (device::tty_to_real_device): Delete. * devices.h (device::tty_to_real_device): Ditto. * devices.cc: Regenerate. * dtable.cc: Delete old ifdef'ed vfork code. (dtable::release): Don't handle archetype here. (dtable::init_std_file_from_handle): Consolidate console tests. Generate major/minor for tty ASAP. Fix incorrect setting of DEV_TTYS* for serial. (fh_alloc): New function derived from build_fh_pc. Pass current tty when building tty. (build_pc_pc): Use fh_alloc to create. Set name from fh->dev if appropriate. Generate an archetype or point to one here. (dtable::dup_worker): Deal with archetypes. Rely on = operator copying whole class rather than just fhandler_base. (dtable::fixup_after_exec): Call close_with_arch to handle closing of fhandlers with archetypes. * fhandler.cc (fhandler_base::operator =): Call memcpy with fhandler's size() rather than sizeof fhandler_base. (fhandler_base::open_with_arch): New function. Handles opening of fhandler's with archetypes, dealing with usecounts, etc. (fhandler_base::close_with_arch): Ditto for close. * fhandler.h: Many changes for archetypes. (fhandler_base::set_name): Set both normalized path and regular path. (fhandler_base::open_with_arch): New function. (fhandler_base::open_setup): Ditto. (fhandler_base::use_archetype): Ditto. (fhandler_base::_archetype_usecount): Ditto. (fhandler_*::size): Ditto. (fhandler_dev_tape::open): Remove virtual decoration. (fhandler_console::use_archetype): New function. Return true. (fhandler_console::open_setup): New function. (fhandler_console::dup): Delete. (fhandler_tty_slave::fhandler_tty_slave): Redeclare to take an argument. (fhandler_tty_slave::use_archetype): New function. Return true. (fhandler_tty_slave::cleanup): New function. (fhandler_pty_master::use_archetype): New function. Return true. (fhandler_pty_master::cleanup): New function. (fhandler_pty_master::is_tty_master): New function. Return false. (fhandler_tty_master::is_tty_master): New function. Return true. (fhandler_dev_dsp::fhandler_dev_dsp): New function. Return true. (report_tty_counts): Only report on archetype's usecount if there is one. * fhandler_console.cc (fhandler_console::get_tty_stuff): Remove handling of setsid, set_ctty, set_flags, and manage_console_count. (fhandler_console::open_setup): New function. Implement functionality removed from get_tty_stuff. (fhandler_console::dup): Delete. (fhandler_console::output_tcsetattr): Set errno on error. (fhandler_console::fhandler_console): Set device early. (fhandler_console::init): Use open_with_arch to open console handles. (fhandler_console::fixup_after_fork_exec): Nuke most of the stuff for dealing with console handles. * fhandler_dsp.cc (fhandler_dev_dsp::open): Remove archetype handling. (fhandler_dev_dsp::write): Ditto. (fhandler_dev_dsp::read): Ditto. (fhandler_dev_dsp::close): Ditto. (fhandler_dev_dsp::dup): Ditto. (fhandler_dev_dsp::ioctl): Ditto. (fhandler_dev_dsp::fixup_after_fork): Ditto. (fhandler_dev_dsp::fixup_after_exec): Ditto. * fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Add a little more debugging. (fhandler_tty_common::__release_output_mutex): Ditto. (fhandler_pty_master::process_slave_output): Ditto. Don't do signal handling or pthread_cancel handling in the tty master thread. (process_output): Minor reorg. (fhandler_tty_slave::fhandler_tty_slave): Set device based on new ntty argument. (fhandler_tty_slave::open): Remove archetype handling. Move some processing into open_setup(). (fhandler_tty_slave::open_setup): New function. (fhandler_tty_slave::cleanup): New function. (fhandler_tty_slave::close): Remove archetype handling. Move some processing into cleanup(). (fhandler_tty_slave::init): Rename argument from f to h. Open device using open_with_arch(). Remove archetype handling. (fhandler_pty_master::dup): Ditto. (fhandler_pty_master::open): Ditto. (fhandler_pty_master::close): Ditto. Move some handling to cleanup(). (fhandler_pty_master::cleanup): New function. (fhandler_tty_master::init_console): Give unique name to captive console fhandler. * pinfo.cc (_pinfo::set_ctty): Rename argument from arch to fh. Eliminate archetype assumption. * syscalls.cc (close_all_files): Use close_with_arch for closing. (open): Use open_with_arch() rather than open(). (close): Use close_with_arch() rather than close().
* * pinfo.h (class push_process_state): New class to push a process stateCorinna Vinschen2011-05-051-0/+9
| | | | | | | | | | | | | | flag temporarily into myself->process_state. * fhandler_console.cc (fhandler_console::read): Add push_process_state handler. (fhandler_console::write): Call bg_check from here. Add push_process_state handler. * fhandler_tty.cc (fhandler_tty_slave::write): Ditto. (fhandler_tty_slave::read): Ditto. (fhandler_pty_master::write): Ditto. (fhandler_pty_master::read): Ditto. * syscalls.cc (readv): Remove bg_check call and setting process state. (writev): Ditto.
* * fhandler.h (class fhandler_base): Remove uninterruptible_io statusCorinna Vinschen2011-05-041-1/+0
| | | | | | | | | | | | | | | | | | | | | flag. (fhandler_base::ready_for_read): Remove declaration. (fhandler_socket::ready_for_read): Ditto. (fhandler_pipe::ready_for_read): Ditto. (fhandler_tty_master::is_slow): Remove. * fhandler_console.cc (fhandler_console::open): Drop setting uninterruptible_io. * fhandler_serial.cc (fhandler_serial::open): Ditto. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Ditto. (fhandler_tty_master::init_console): Ditto. * pipe.cc (fhandler_pipe::fhandler_pipe): Ditto. (fhandler_pipe::open): Ditto. (_pipe): Ditto. * select.cc (fhandler_pipe::ready_for_read): Remove. (fhandler_base::ready_for_read): Remove. * syscalls.cc (readv): Drop unneeded wait variable. Remove entire test which might lead to calling ready_for_read. Remove now unused label out.
* * fhandler_console.cc (fhandler_console::read): Make restartable andCorinna Vinschen2011-05-021-12/+14
| | | | cancelable.
* * autoload.cc (GetConsoleWindow): Drop.Corinna Vinschen2011-04-191-2/+2
| | | | | | | | | | (GetSystemWindowsDirectoryW): Drop. * fhandler_console.cc (beep): Call GetSystemWindowsDirectoryW instead of GetWindowsDirectoryW. * uinfo.cc (cygheap_user::env_systemroot): Call GetSystemWindowsDirectoryW and convert to multibyte on the fly. * winlean.h (GetWindowsDirectoryW): Redefine to something invalid. Explain why.
* * Makefile.in (DLL_IMPORTS): Drop advapi32.dll.Corinna Vinschen2011-04-191-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * autoload.cc: Enable autoloading advapi32 functions. * environ.cc (regopt): Use wide char arguments in reg_key functions. * fhandler_console.cc (beep): Ditto. Use WCHAR throughout. * registry.cc (reg_key): Rewrite reg_key class to use native NT registry functions. Use WCHAR string parameters throughout. Use PCWSTR rather than const WCHAR. Drop multibyte char functionality. Drop unused methods. (get_registry_hive_path): Use RtlQueryRegistryValues to fetch path from registry. (load_registry_hive): Drop useless check for user hive being available. Load hive using NtLoadKey. * registry.h: Accommodate above changes. * sched.cc (sched_rr_get_interval): Use wide char arguments in reg_key functions. * shared.cc (init_installation_root): Ditto. (shared_info::init_obcaseinsensitive): Use RtlQueryRegistryValues to fetch obcaseinsensitive value. (shared_info::heap_slop_size): Use wide char arguments in reg_key functions. (shared_info::heap_chunk_size): Ditto. * syscalls.cc (gethostid): Ditto. * winsup.h (__WIDE): Define. (_WIDE): Define. * libc/minires-os-if.c (get_registry_dns_items): Don't fetch values from registry. Just extract them from given UNICODE_STRING parameter. (get_registry_dns): Fetch all registry values at once using RtlQueryRegistryValues.
* * cygheap.h (init_cygheap::ctty): Use base class so that console can join inChristopher Faylor2011-04-171-13/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | the fun. * dtable.cc (dtable::stdio_init): Remove special-case call to set_console_ctty (). * exceptions.cc (sigpacket::process): Conditionally flush terminal input on certain signals. * fhandler.h (fhandler_console::get_tty_stuff): Make non-static. (fhandler_termios::get_ttyp): Move here. (fhandler_termios::sigflush): Declare. (fhandler_tty_common::get_ttyp): Delete. * fhandler_console.cc (fhandler_console::get_tty_stuff): Pass this as "arch" argument. (set_console_ctty): Delete. (tty_list::get_tty): Just return pointer to shared console region, delaying get_tty_stuff until open(). (fhandler_console::init): Treat NULL handle as signifying that console should be opened with O_NOCTTY flag. Rename handle argument to the more common 'h'. * fhandler_termios.cc (fhandler_termios::sigflush): Define. * fhandler_tty.cc (handler_tty_master::init_console): Pass NULL as first argument to fhandler_console::init. * pinfo.cc (_pinfo::set_ctty): Change third parameter to fhandler_termios *. Add extra debugging. * pinfo.h (_pinfo::set_ctty): Change third parameter to fhandler_termios *. * sigproc.cc (handle_sigsuspend): Don't special-case non-main threads.
* * Throughout fix copyright dates.Corinna Vinschen2011-02-151-1/+1
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* * fhandler_console.cc (fhandler_console::write_normal): RemoveCorinna Vinschen2011-02-071-12/+17
| | | | | | | erroneous premature return after collecting truncated multibyte sequence in trunc_buf. Rather fall through to printing routine. Fix return value to take trunc_buf content into account. Improve comments.
* * fhandler.h (fhandler_termios::tcinit): Make second argument non-optional.Christopher Faylor2010-10-231-1/+1
| | | | | | | | | | | | | | | | * fhandler_console.cc (fhandler_console::open): Specify second argument to tcinit. * fhandler_termios.cc (fhandler_termios::tcinit): Rename second argument. Set pgid to 0 if this is a pty master. (fhandler_termios::tcgetpgrp): Just return value of pgid. It will be zero if not initialized. * fhandler_tty.cc (fhandler_tty_slave::open): Specify second argument to tcinit. (fhandler_tty_slave::ioctl): Implement TIOCGPRP/TIOCSPGRP. Fix switch indentation. (fhandler_tty_master::ioctl): Implement TIOCGPRP/TIOCSPGRP. * include/sys/termios.h (TIOCGPGRP): Define similarly to Linux. * include/sys/termios.h (TIOCSPGRP): Ditto.
* * dcrt0.cc (dll_crt0_0): Move _main_tls initialization here.Christopher Faylor2010-10-021-1/+1
| | | | | (__dll_crt0): Only initialize _main_tls if it changes. * fhandler_console.cc (fhandler_console::write): Fix debugging output.
* * cygthread.h (cygthread::cygthread): Reorganize slightly.Christopher Faylor2010-09-121-1/+1
| | | | | | | | | * dcrt0.cc (dll_crt0_0): Move sigproc initialization later to ensure everything we need has been set up. (dll_crt0_1): Streamline some logic slightly. * sigproc.cc (no_signals_available): Add back dropped test for macro parameter. * fhandler_console.cc (fhandler_console::write): Show a little bit of what's being written to the console in debugging output.
* * fhandler.h (class dev_console): Add backspace_keycode member.Corinna Vinschen2010-04-111-2/+6
| | | | | | | | * fhandler_console.cc (fhandler_console::get_tty_stuff): Initialize backspace_keycode with CERASE. (fhandler_console::read): Return dev_state->backspace_keycode if the backspace key is pressed. (fhandler_console::char_command): Implement DECBKM escape sequence.
* * fhandler_console.cc (fhandler_console::read): Default to sending CERASEChristopher Faylor2010-04-101-13/+3
| | | | | character if termios VERASE field is zero. (fhandler_console::fixup_after_fork_exec): Avoid a spurious debug message.
* 2010-03-30 Thomas Wolff <towo@towo.net>Corinna Vinschen2010-03-301-12/+16
| | | | | | | | * fhandler.h (class dev_console): Drop vt100_graphics_mode_active. Add flags vt100_graphics_mode_G0, vt100_graphics_mode_G1 and iso_2022_G1. * fhandler_console.cc: Throughout, tune VT100 graphics mode switching to follow ISO 2022 strictly.
* * shared_info.h (open_shared): Create function wrapper for common use case.Christopher Faylor2010-03-091-2/+1
| | | | | | | | | | | | | | | (open_shared): Change fifth argument to a pointer rather than a reference. * fhandler_console.cc (fhandler_console::get_tty_stuff): Eliminate use of dummy variable and call open_shared with constant. * fhandler_process.cc (format_process_mounts): Ditto. * pinfo.cc (pinfo::init): Pass pointer to shloc. * shared.cc (shared_mem_inited): New variable. (open_shared): Crate function wrapper for common use case. (open_shared): Accommodate change to fifth argument to a pointer. (shared_info::initialize): Remove spinlock test. Simplify function. Move get_session_parent_dir call back here. (memory_init): Protect global shared settings with shared_mem_inited spinlock. Move get_session_parent_dir call to shared_info::initialize.
* * cygwin.din (dup3): Export.Corinna Vinschen2010-01-141-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (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.
* * fhandler_console.cc (handler_console::read): Use the tty's VERASE characterChristopher Faylor2009-12-251-5/+12
| | | | as the backspace keycode.
* * fhandler_console.cc (get_nonascii_key): Generate ESC prefixCorinna Vinschen2009-12-211-34/+48
| | | | | | | | | | | for Alt modifier generically for function keys and keypad keys. Distinguish Normal, Ctrl, Shift, Ctrl-Shift rather than Normal, Ctrl, Shift, Alt, so that in combination with generic Alt handling all 8 combinations of these modifiers are distinguished. (keytable): Add escape sequences for remaining modified function keys as a compatible extension using rxvt escape codes. Also distinguish keypad keys modified with Ctrl, Shift, Ctrl-Shift using xterm-style modifier coding.
* * fhandler_console.cc (__vt100_conv): Minor formatting change.Corinna Vinschen2009-12-191-1/+1
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* * fhandler_console.cc (write_console): Check for VT100Corinna Vinschen2009-12-191-11/+100
| | | | | | | | | | | | | | | | | | | | | | graphics mode and transform wide characters in ASCII small letter range to corresponding graphics. (__vt100_conv): Table to transform small ASCII letters to line drawing graphics for use in VT100 graphics mode. (write_normal): Check for SO/SI control characters to enable/disable VT100 graphics mode. (base_chars): Enable SO/SI control characters for detection. (write): Check for ESC ( 0 / ESC ( B escape sequences to enable/disable VT100 graphics mode. Also detect ">" while parsing ESC [ sequences to distinguish specific requests. (char_command): Distinguish Secondary from Primary Device Attribute request to report more details about cygwin console terminal version. * fhandler.h (vt100_graphics_mode_active): New flag to indicate mode. (saw_greater_than_sign): New parse flag for ESC [ > sequences. (gotparen, gotrparen): New state values to parse ESC ( / ) sequences. * fhandler_console.cc (read): Allow combined Alt-AltGr modifiers to also produce an ESC prefix like a plain Alt modifier, e.g. to make Alt-@ work on a keyboard where @ is AltGr-q.
* * fhandler_console.cc (read): Detect and handle mouse wheel scrollingCorinna Vinschen2009-12-161-86/+163
| | | | | | | | | | | | | | | | | | | events (for completion of mouse reporting mode 1000) and mouse movement events (for additional mouse reporting modes 1002 and 1003). Use mouse_aware() as a guard and only condition for mouse reporting in order to enforce consistence of read() and select(). Add focus reports (for additional focus reporting mode 1004). (mouse_aware): Enable detection of additional mouse events for select(). Tune function to precisely match actual reporting criteria. Move adjustment of mouse position (by window scroll offset) here to avoid duplicate code. (char_command): Initialization of enhanced mouse reporting modes. Initialization of focus reporting mode. * fhandler.h (use_mouse): Change flag (bool->int) to indicate additional mouse modes. Add flag to indicate focus reporting. (mouse_aware): Move enhanced function into fhandler_console.cc. * select.cc (peek_console): Use modified mouse_aware() for more general detection of mouse events. Also check for focus reports.
* * fhandler_console.cc (char_command): Fix code to select dim modeCorinna Vinschen2009-12-151-4/+11
| | | | | to 2 rather than 9. Add entries for mode 22 (normal, not bold) 28 (visible, not invisible), 25 (not blinking).
* * fhandler_console.cc (fhandler_console::read): Revert change fromCorinna Vinschen2009-11-101-16/+11
| | | | 2009-11-09.
* * fhandler_console.cc (fhandler_console::read): Restrict generatingCorinna Vinschen2009-11-091-11/+16
| | | | META key sequences to singlebyte input chars.
* * fhandler_console.cc (beep): Move up to avoid forward declaration.Corinna Vinschen2009-09-301-18/+29
| | | | | (fhandler_console::read): Just beep on characters invalid in current charset. Add comment.
* * fhandler.h (class dev_console): Constify charset parameter ofCorinna Vinschen2009-09-281-13/+16
| | | | | | | | | | | | | | | | | | | | | | | | | str_to_con. * fhandler_console.cc (dev_console::con_to_str): Simplify. Always default to the current internal locale. (dev_console::get_console_cp): Always use codepage 437 for alternate charset. (dev_console::str_to_con): Constify charset parameter. (fhandler_console::write_normal): Always use codepage 437 for alternate charset. Otherwise always default to the current internal locale. Replace ASCII SO with ASCII CAN. * strfuncs.cc: Tweka comments according to below changes. (sys_cp_wcstombs): Constify charset parameter. Convert all wchar_t values in the Unicode private use area U+F0xx to the singlebyte counterpart. Drop special handling creating ASCII SO sequence from U+DCxx value. Rearrange for performance. Replace ASCII SO with ASCII CAN. (sys_cp_mbstowcs): Constify charset parameter. Replace ASCII SO with ASCII CAN. Drop special case for U+DCxx ASCII SO sequences. Always create a replacement from the Unicode private use area U+F0xx for invalid byte values in a multibyte sequence. Do the same for wchar_t values from the U+F0xx range to make them roundtrip safe. * wchar.h (sys_cp_wcstombs): Constify charset parameter. (sys_cp_mbstowcs): Ditto.