diff options
Diffstat (limited to 'winsup/cygwin/globals.cc')
| -rw-r--r-- | winsup/cygwin/globals.cc | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/winsup/cygwin/globals.cc b/winsup/cygwin/globals.cc index a1a4ae946..f30b6d02a 100644 --- a/winsup/cygwin/globals.cc +++ b/winsup/cygwin/globals.cc @@ -13,6 +13,7 @@ details. */ #include "winsup.h" #include "cygtls.h" #include "perprocess.h" +#include "cygprops.h" #include "thread.h" #include <malloc.h> #include <cygwin/version.h> @@ -72,6 +73,9 @@ char NO_COPY almost_null[1]; char *old_title; +/* Define globally used, but readonly variables using the _RDATA attribute. */ +#define _RDATA __attribute__ ((section(".rdata"))) + /* Heavily-used const UNICODE_STRINGs are defined here once. The idea is a speed improvement by not having to initialize a UNICODE_STRING every time we make a string comparison. The strings are not defined as const, @@ -83,7 +87,6 @@ char *old_title; { Length: sizeof (_s) - sizeof (WCHAR), \ MaximumLength: sizeof (_s), \ Buffer: (PWSTR) (_s) } -#define _RDATA __attribute__ ((section(".rdata"))) UNICODE_STRING _RDATA ro_u_empty = _ROU (L""); UNICODE_STRING _RDATA ro_u_lnk = _ROU (L".lnk"); UNICODE_STRING _RDATA ro_u_exe = _ROU (L".exe"); @@ -102,9 +105,22 @@ UNICODE_STRING _RDATA ro_u_sunwnfs = _ROU (L"SUNWNFS"); UNICODE_STRING _RDATA ro_u_udf = _ROU (L"UDF"); UNICODE_STRING _RDATA ro_u_unixfs = _ROU (L"UNIXFS"); UNICODE_STRING _RDATA ro_u_volume = _ROU (L"\\??\\Volume{"); -#undef _RDATA #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. */ +cygwin_props_t _RDATA cygwin_props = +{ + CYGWIN_PROPS_MAGIC, + sizeof (cygwin_props_t), + 0 +}; + +#undef _RDATA + extern "C" { /* This is an exported copy of environ which can be used by DLLs |