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Remove ill-advised cygwin_props

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Cygwin_props have been invented to allow switching off the unique
installation keys in the first place, supposedly for debugging.
This never really was a good idea, after all we *want* the installations
to be independent and there's no good reason to break that, not even
for debugging purposes.

Other than that, cygwin_props were meant to be used for some other global
settings which never took place.  There's just no good reason to tweak
the DLL binary invisibly where a setting could be done in a file or the
environment.

This patch removes the cygwin_props entirely, including the related
settings in cygcheck.

cygwin:
	* cygprops.h: Remove file.
	* globals.cc (cygwin_props): Remove.
	* cygheap.cc (init_cygheap::init_installation_root): Drop removing
	installation key.

utils:
	* cygcheck.cc: Drop including cygprops.h.  Remove now unused option
	values.
	(unique_object_name_opt): Remove.
	(handle_unique_object_name): Remove function.
	(usage): Remove text for unique-object-names options.
	(longopts): Remove unique-object-names options.
	(main): Drop handling unique-object-names options.

doc:
	* utils.xml (cygcheck): Remove text for unique-object-names options.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2016-03-19 13:21:18 +01:00
parent d17977ccc7
commit e42f66d00f
5 changed files with 1 additions and 215 deletions
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14
winsup/cygwin/globals.cc
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@ -13,7 +13,6 @@ details. */
#include "winsup.h"
#include "cygtls.h"
#include "perprocess.h"
#include "cygprops.h"
#include "thread.h"
#include <malloc.h>
#include <cygwin/version.h>
@ -160,19 +159,6 @@ const int __collate_load_error = 0;
extern UNICODE_STRING _RDATA ro_u_natdev = _ROU (L"Device");
#undef _ROU
/* Cygwin properties are meant to be readonly data placed in the DLL, but
which can be changed by external tools to make adjustments to the
behaviour of a DLL based on the binary of the DLL itself. This is
different from $CYGWIN since it only affects that very DLL, not all
DLLs which have access to the $CYGWIN environment variable. We use the
same _RDATA trick as for the above UNICODE_STRINGs. */
extern cygwin_props_t _RDATA cygwin_props =
{
CYGWIN_PROPS_MAGIC,
sizeof (cygwin_props_t),
0
};
/* This is an exported copy of environ which can be used by DLLs
which use cygwin.dll. */
char **__cygwin_environ;