pseudo randomness.
* fhandler_random.cc: Rearrange. Use pseudo random number generator
as entropy source if system entropy isn't available and if device is
used as /dev/urandom. Allow initializing device by calling write().
to be set when variable blocksize mode is on.
* fhandler_raw.cc: Eliminate `\n' from trace output.
(clear): Set `varblkop' to 0.
(dup): Copy varblkop as well.
(writebuf): Care for variable blocksize.
(open): Ditto.
(raw_read): Ditto.
(raw_write): Ditto.
* fhandler_tape.cc (open): Ditto.
(ioctl): Ditto. Some cleanups.
* winsup.h: Add new macros sys_wcstombs and sys_mbstowcs.
* syscalls.cc (_link): Replace calls to mbstowcs by call to
sys_mbstowcs.
* uinfo.cc (internal_getlogin): Replace calls to wcstombs and
mbstowcs by calls to sys_wcstombs and sys_mbstowcs. Replace
usage of constants by meaningful defines. Use result of
GetSystemDirectory for HOMEPATH and HOMEDRIVE as a last resort.
* syscalls.cc (chroot): Set new root for process.
* path.cc (getcwd_inner): Add parameter to force use of
new root from chroot() call.
(ischrootpath): New macro.
(normalize_posix_path): Care for changed root dir.
(normalize_win32_path): Ditto.
(getcwd_inner): Ditto.
(chdir): Eliminate trailing path component consisting
entirely of dots.
* fork.cc (fork): Copy pinfo members regarding chroot().
* spawn.cc (_spawnve): Ditto.
* dir.cc (opendir): Don't use computed win32 path if
chroot() took place.
for second argument.
* path.h: Generalize SYMLINK_* constants to PC_*.
(path_conv): Create a new method. Fold third argument into second.
* dll_init.cc (dll_list::alloc): Try harder to find space to allocate dll
struct.
(dll_dllcrt0): Don't check sanity if we've already called dll_crt0.
* path.cc (path_conv::check): Don't check for a null or empty path unless
specifically told with a flag setting.
(check_null_empty_path): New function, adapted from macro.
* syscalls.cc (_rename): Use already-determined file attributes rather than
checking again.
* lib/cygwin/cygwin_attach.dll.c (cygwin_attach_dll): Use a static per_process
structure since this is apparently supposed to be zeroed.
* lib/cygwin_crt0.c (cygwin_crt0): Zero per_process structure sent to older
DLLs.
(environ_init): Explicitly initialize __cygwin_environ.
(cur_environ): New function. Detects when user has updated their environment.
* exec.cc: Use 'environ' define throughout rather than __cygwin_environ.
* spawn.cc: Ditto.
* winsup.h: Declare cur_environ, main_environ, environ.
detect when there are no fds to pass.
* dcrt0.cc (host_dependent_constants::init): Revert Sat Mar 18 01:32:04 2000
change.
(dll_crt0_1): Set "cygwin_finished_initializing" flag.
(dll_crt0): Don't perform memcpy if uptr is already set to internal structure.
(_dll_crt0): Remember location of programs envptr.
* dll_init.h (per_module, dll, dll_list): Revamp.
* dll_init.cc: Revamp. Use new classes.
* fork.cc (fork): Use new revamped dll, dll_list, and per_module stuff.
* environ.cc: Use __cygwin_environ throughout rather than the
user_data->envptr.
* exec.cc: Ditto.
* spawn.cc: Ditto.
* winsup.h: Declare update_envptrs, cygwin_finished_initializing.
* lib/_cygwin_crt0_common.cc (_cygwin_crt0_common): Revert previous change.
* lib/cygwin_attach_dll.cc (cygwin_attach_dll): Always pass in own per_process
structure or we end up overwriting information from the main program.
an fd.
* external.cc (cygwin_internal): Add handling of perfile_table setting.
* fhandler.cc (perfile_table): New global.
(fhandler_base::get_default_fmode): New method to return a file's default mode
based on its name.
(fhandler_base::open): Use get_default_mode method to determine a file's mode.
Record file mode in file flags.
* fhandler.h (fhandler_base): Declare get_default_fmode
* syscalls.cc (getmode): New function.
* sys/cygwin.h (__cygwin_perfile): New structure.
(cygwin_getinfo_types): Move outside of WINVER conditional.
(per_process): Move inside of WINVER conditional.
* include/sys/cygwin.h: Allow definition of per_process even when not compiling
with C++.
(cygwin_getinfo_types): Add CW_USER_DATA.
* lib/_cygwin_crt0_common.cc (_cygwin_crt0_common): Get __cygwin_user_data
pointer from cygwin_internal. If it doesn't exist, return failure. Use either
this pointer or passed in pointer throughout. Clear forkee.
* lib/crt0.h: Accomodate argument changes to _cygwin_crt0_common.
* lib/cygwin_attach_dll.c (cygwin_attach_dll): Reorganize to allow use of newer
binaries with older DLLs. Detect older DLLs when _cygwin_crt0_common returns 0
and allocate space for a per_process structure on the stack.
* lib/cygwin_crt0.c (cygwin_crt0): Ditto.
(dll_crt0_1): Eliminate user_data initialization.
(dll_crt0): Set up impure_ptr_ptr for older executables.
(cygwin_dll_init): Eliminate user_data initializations.
(__api_fatal): Don't check for user_data initialization.
* dll_init.cc (struct dll): Store entire contents of per_process rather than
just a pointer.
(add): Ditto.
(initOneDll): Don't check for user_data initialization.
(DllList::recordDll): Store contents of per_process argument.
(DllList::detachDll): Pass address of per_process field.
(DllList::initAll): Ditto.
(DllList::doGlobalDestructorsOfDlls): Ditto.
(DllListIterator::operator *): Ditto.
(dll_dllcrt0): Default to __cygwin_user_data if arg is NULL.
* include/sys/cygwin.h: Reorganize per_process to eliminate obsolete fields and
accomodate new way of initializing.
* lib/_cygwin_crt0_common: Initialize _impure_ptr from
__cygwin_user_data.impure_ptr.
Christopher Faylor
David Starks-Browning
Corinna Vinschen
DJ Delorie