signal mask so that stacked signals behave correctly.
(sigdelayed): Avoid a race where a signal could end up calling an incorrect
signal handler if two signals come in close together.
* exceptions.cc (sig_handle_tty_stop): Move setting of PID_STOPPED to earlier
in interrupt.
((interrupt_setup): i.e., here.
(sig_handle): Don't queue multiple SIGSTOPS.
* fhandler.h (bg_check_types): Enumerate return value of bg_check for clarity.
* signal.cc (kill_pgrp): Minor cleanup.
* fhandler_termios.cc (fhandler_termios::bg_check): Use enumerated type for
function return. Don't raise signal if a signal is already queued.
* fhandler_console.cc (fhandler_console::read): Use enumerated return type for
bg_check.
* select.cc: Ditto, throughout.
* read.cc: Ditto, throughout.
* termios.cc: Ditto, throughout.
(_read): YA interrupt detect simplification.
* wait.cc (wait4): Ditto.
the new page map.
(mmap_record): Change type of base_address_ to caddr_t.
Add map_map_ member. Add several methods to manipulate map_map_.
(mmap_record::alloc_map): New method.
(mmap_record::free_map): Ditto.
(mmap_record::find_empty): Ditto.
(mmap_record::map_map): Ditto.
(mmap_record::unmap_map): Ditto.
(list::add_record): Change return type to `mmap_record *'.
Allocate page map.
(list::match): New method.
(mmap): Partly rewritten to take care for the new page map. Add some
parameter checking.
(munmap): Ditto.
* signal.cc (sigaction): Don't treat SIGCONT specially.
* exceptions.cc (interrupt_setup): Save sa_flags of interrupted signal for
later use.
(sig_handler): Default any stopping signal to SIGSTOP.
(call_signal_handler): New function.
(sigdelayed0): New function.
* sigproc.cc (sigproc_init): Initialize SIGSTOP sigaction for special behavior.
* sigproc.h: Define call_signal_handler.
* syscalls.cc (_read): Allow restartable signal behavior.
* environ.cc (codepage_init): To here.
* exceptoins.cc (SIG_NONMASKABLE): Remove SIGCONT from consideration since it
is supposed to be maskable.
* signal.cc (sigaction): Ditto.
* sigproc.cc (wait_sig): Ditto.
* winsup.h: Eliminate global declaration of codepage_init.
(setrlimit): Ditto.
Patch by David Sainty <David.Sainty@optimation.co.nz>:
* resource.cc (setrlimit): Prevent failing with an error when the
operation would not have changed anything.
* exceptions.cc (stackdump): Avoid creating stackdump when
`rlim_core' is 0.
* resource.cc: New global variable `rlim_core'.
(getrlimit): New function.
(setrlimit): Ditto.
include/cygwin/version.h: Bump minor API version to 32 due to
adding `getrlimit' and `setrlimit'.
include/sys/resource.h: Add defines, types and prototypes for
`getrlimit' and `setrlimit'.
`smbntsec'.
* path.cc (path_conv::check): Check path for being a remote path.
If so and `allow_smbntsec' is set to FALSE, set has_acls to FALSE.
* security.cc: Add global definition for `allow_smbntsec'.
* security.h: Add extern declaration for `allow_smbntsec'.
* fhandler.cc (fhandler_disk_file::open): Eliminate extern declaration
of `allow_ntsec'.
* syscalls.cc: Ditto.
method.
* fhandler_console.cc (fhandler_console::read): Revert previously misapplied
patch.
(fhandler_console::char_command): Add a second argument.
(fhandler_console::write): Recognize when a '?' is found after a <esc>[.
* dcrt0.cc (dll_crt0_1): Translate command line to OEM if current codepage is
OEM.
* environ.cc: Add new option 'codepage' to CYGWIN environment variable.
* fhandler_clipboard.cc (fhandler_clipboard::read): Read clipboard in OEM mode
if current codepage is OEM.
* fhandler_console.cc (fhandler_console::read): Only translate console input if
current codepage is ANSI.
* fhandler_console.cc (fhandler_console::write_normal): Translate output data
if current codepage is ANSI.
* pinfo.cc (codepage_init): New function. Setup current codepage from CYGWIN
environment variable and set codepage for file APIs.
* security.cc (read_sd): Translate file name to it if current codepage is OEM.
* winsup.h: (sys_wcstombs,sys_mbstowcs): Use current codepage for translations
between multibyte and widechar string and vice versa.
beginning of a path. These should be treated specially regardless of whether
they are UNC paths or old-style //a paths. Avoid adding cwd to a path if the
path already begins with '/'.
Always check for MAX_PATH overrun. Avoid adding one too many backslashes when
src path begins with a slash. From Corinna Vinschen.
* winsup.h: Force demangling for dll_crt0 for newer compilers.
condition.
* path.cc (path_conv::check): Get file system type in call to
GetVolumeInformation to check for file systems with buggy CreateFile.
* path.h (enum path_types): Add PATH_HASBUGGYOPEN.
(class path_conv): Add methods `has_buggy_open' and
`set_has_buggy_open'.
(fhandler_base::raw_read): Detect special case where last error ==
ERROR_NOACCESS but the file is at EOF. Most UNIXes do not consider this to be
an error.
(fillin_info): Set `dwBufferSize' to the size of the console buffer.
(clear_screen): Use width of console buffer to calculate how many spaces to
clear.
* exceptions.cc (interrupt_setup): Don't set signal mask here or races occur
with main thread. Set it in sigdelayed instead.
(sigreturn): Reflect change in stack order of ebp and flags.
(sigdelayed): Set stack frame correctly. Call set_process_mask here with flags
for last trapped signal.
(signal_dispatch): Add newmask.
* sigproc.cc (wait_sig): Eliminate ill-considered attempt to halt looping
signal processors.
* child_info.h (child_info): Eliminate parent_alive.
* dcrt0.cc (dll_crt0_1): Call fork_init for debugging pid creation.
* fork.cc (fork_child): Reflect change to fixup_mmaps_after_fork arguments.
(slow_pid_reuse): New function to grab last 'n' pids to prevent pid reuse.
(fork_parent): Move last_fork_proc into slow_pid_reuse. Handle fork_pids
debugging. Eliminate unnecessary call to set_child_mmap_ptr.
(fork_init): New debugging function.
* mmap.cc (fixup_mmaps_after_fork): Renamed from recreate_mmaps_after_fork.
Rely on copied data after a fork.
(set_child_mmap_ptr): Eliminate.
* pinfo.h (_pinfo): Eliminate parent_alive, mmap_ptr and reflect above changes.
* spawn.cc (spawn_guts): Eliminate vestiges of "old way" of sending new hProc
to parent process.
(cygheap_root::~cygheap_root): Ditto.
(cygheap_root::operator=): Ditto.
(cygheap_user::~cygheap_user): Ditto.
(cygheap_user::set_name): Ditto.
(cygheap_user::set_logsrv): Ditto.
(cygheap_user::set_domain): Ditto.
(cygheap_user::set_sid): Ditto.
* cygheap.h (cygheap_root): New class.
(cygheap_user): Ditto.
(init_cygheap): Change type of `root' member to cygheap_root.
Add `user' member.
* dir.cc (opendir): Use new `cygheap_root' class.
* dcrt0.cc (dll_crt0_1): Use new `cygheap_user' class.
* fork.cc (fork_parent): Ditto.
* grp.cc (getgroups): Ditto.
* passwd.cc (search_for): Ditto.
* path.cc: Use new `cygheap_root' class throughout.
* pinfo.h (_pinfo): Remove `use_psid'. Move `username', `psid',
`logsrv', `domain', `orig_{uid,gid}' and `real_{uid,gid}' to
cygheap_user class.
* security.cc: Use new `cygheap_user' class throughout.
* shared.cc (sec_user): Ditto.
* sigproc.cc (proc_subproc): Remove copy statements for user
related information moved to `cygheap_user' class.
* spawn.cc (spawn_guts): Invalidate current chroot settings
when creating Windows environment. Use new `cygheap_user' class.
* syscalls.cc: Use new `cygheap_user' class throughout.
* uinfo.cc: Ditto.
* uinfo.cc (internal_getlogin): Change parameters to reflect the
move of user information to cygheap.
heap.
* child_info.h (child_info): Change pointer type of cygheap to init_cygheap.
* cygheap.cc (init_cheap): Point cygheap_max after contents of cygheap. Move
some stuff into cygheap.h.
* dir.cc (opendir): Change to use root and rootlen in cygheap rather than in
myself.
(mkdir): Change to use umask in cygheap rather than in myself.
* path.cc: Ditto, throughout.
* syscalls.cc (_open): Ditto. Change to use umask in cygheap rather than in
myself.
(chroot): Change to allocate root dir on the cygwin heap.
(umask): Change to use umask in cygheap rather than in myself.
(cygwin_bind): Ditto.
* sigproc.cc (proc_subproc): Don't copy umask or root stuff as this happens
automatically now.
* pinfo.h (_pinfo): Migrate stuff out of here and into init_cheap.
* dcrt0.cc (dll_crt0_1): Call cygheap_init later in startup for first cygwin
process.
(dll_crt0_1): Disable case-insensitive globbing before calling `main'.
* environ.cc (glob_init): New static function to set or clear
`ignore_case_with_glob'.
(known): Changed "glob" entry to call `glob_init'.
* glob.c (match): Use case-insensitive globbing if needed.
conjunction with older binaries.
(environ_init): Ditto.
* external.cc (get_cygdrive_info): New function.
* external.cc (get_cygdrive_prefixes): Change to use get_cygdrive_info but toss
the user and system flags.
* external.cc (cygwin_internal): Add new CW_GET_CYGDRIVE_INFO case.
* path.cc (mount_info::get_cygdrive_prefixes): Remove method.
* path.cc (mount_info::get_cygdrive_info): New method. Actually,
get_cygdrive_info is really an enhanced version of get_cygdrive_prefixes
renamed to get_cygdrive_info that also gets the user and system flags.
* shared_info.h (get_cygdrive_prefixes): Remove method.
* shared_info.h (get_cygdrive_info): New method.
* include/cygwin/version.h: Bump minor API version due to adding
CW_GET_CYGDRIVE_INFO to cygwin_internal.
* include/sys/cygwin.h (cygwin_getinfo_types): Add CW_GET_CYGDRIVE_INFO.
(dll_crt0_1): Move sigthread lock initialization to earlier in startup.
* exceptions.cc (interrupt_on_return): Remove previous kludgy attempt to detect
an invalid frame.
(call_handler): Eliminate inner for loop. Grab signal critical section lock
where appropriate.
* sigproc.cc (proc_subproc): Restore uid setting.
* sigproc.h (sigthread): Reinstitute sigthread lock as a critical section.
(sigframe): Grab the sigthread lock before clearing frame to avoid having the
signal thread use an invalid frame.
parent handle.
* dcrt0.cc (_dll_crt0): Close parent's parent handle when spawned or forked.
* debug.cc (add_handle): Correct erroneous reference to handle structure when
printing warning.
* exceptions.cc (interrupt_now): Always return 1.
(interrupt_on_return): Accept a sigthread argument. Check to see if this
argument has been trashed prior to setting up the stack return.
(call_handler): Add a loop around attempts to dispatch signals to detect case
where interrupt_on_return fails.
(_sigdelayed): Set up a temporary frame pointer prior to calling stuff that
could trigger an interrupt or the stack walking code will be very confused.
* fork.cc (fork_parent): Move a lot of the setup of the child process into
proc_subproc.
* spawn.cc (spawn_guts): Ditto. Use ppid_handle to contact logical parent when
reparenting.
* pinfo.h (_pinfo): Remember the logical handle of the parent process.
* sigproc.cc (proc_subproc): Record most stuff necessary for the _pinfo
structure that is inferrable from myself when adding children.
(wait_sig): Always set 'pending_signals' flag when about to kick off the signal
scanning loop. Reset it only if there are no pending signals.
Christopher Faylor
Corinna Vinschen