(GetProcessDEPPolicy): Ditto.
(SetProcessDEPPolicy): Ditto.
* dcrt0.cc (disable_dep): New static function.
(dll_crt0_0): Call disable_dep on platforms requiring it. Add longish
comment to explain the circumstances.
* wincap.h (wincaps::ts_has_dep_problem): New element.
* wincap.cc: Implement above element throughout.
(wincapc::init): Set ts_has_dep_problem to true on 2008 Terminal
Servers.
* winsup.h (WINVER): Set to 0x0601.
2008-11-11 Corinna Vinschen <corinna@vinschen.de>
+ * autoload.cc (GetSystemDEPPolicy): Define.
+ (GetProcessDEPPolicy): Ditto.
+ (SetProcessDEPPolicy): Ditto.
+ * dcrt0.cc (disable_dep): New static function.
+ (dll_crt0_0): Call disable_dep on platforms requiring it. Add longish
+ comment to explain the circumstances.
+ * wincap.h (wincaps::ts_has_dep_problem): New element.
+ * wincap.cc: Implement above element throughout.
+ (wincapc::init): Set ts_has_dep_problem to true on 2008 Terminal
+ Servers.
+ * winsup.h (WINVER): Set to 0x0601.
+
+2008-11-11 Corinna Vinschen <corinna@vinschen.de>
+
* mount.cc (mount_info::cygdrive_win32_path): Always upper case
DOS drive letter to accommodate case sensitivity.
(cygdrive_getmntent): Ditto.
LoadDLLfuncEx (GetConsoleWindow, 0, kernel32, 1)
LoadDLLfuncEx (GetSystemWindowsDirectoryW, 8, kernel32, 1)
LoadDLLfuncEx (GetVolumeNameForVolumeMountPointA, 12, kernel32, 1)
+LoadDLLfuncEx (GetSystemDEPPolicy, 0, kernel32, 1)
+LoadDLLfuncEx (GetProcessDEPPolicy, 12, kernel32, 1)
+LoadDLLfuncEx (SetProcessDEPPolicy, 4, kernel32, 1)
LoadDLLfunc (SHGetDesktopFolder, 4, shell32)
fixup_lockf_after_exec ();
}
+static DEP_SYSTEM_POLICY_TYPE dep_system_policy = (DEP_SYSTEM_POLICY_TYPE) -1;
+
+static void
+disable_dep ()
+{
+ DWORD ppolicy;
+ BOOL perm;
+
+ if (dep_system_policy < 0)
+ {
+ dep_system_policy = GetSystemDEPPolicy ();
+ debug_printf ("DEP System Policy: %d", (int) dep_system_policy);
+ }
+ if (dep_system_policy < OptIn)
+ return;
+ if (!GetProcessDEPPolicy (hMainProc, &ppolicy, &perm))
+ {
+ debug_printf ("GetProcessDEPPolicy: %E");
+ return;
+ }
+ debug_printf ("DEP Process Policy: %d (permanent = %d)", ppolicy, perm);
+ if (ppolicy > 0 && !perm && !SetProcessDEPPolicy (0))
+ debug_printf ("SetProcessDEPPolicy: %E");
+}
+
void __stdcall
dll_crt0_0 ()
{
events_init ();
tty_list::init_session ();
+ /* FIXME: This is hopefully a temporary hack, at least until the support
+ case at Microsoft has been closed one way or the other.
+
+ The disable_dep function disables DEP for all Cygwin processes if
+ the process runs on a Windows Server 2008 with Terminal Services
+ installed. This combination (TS+DEP) breaks *some* Cygwin
+ applications. The Terminal Service specific DLL tsappcmp.dll
+ changes the page protection of some pages in the application's text
+ segment from PAGE_EXECUTE_WRITECOPY to PAGE_WRITECOPY for no
+ apparent reason. This occurs before any Cygwin or applicaton code
+ had a chance to run. MS has no explanation for this so far, but is
+ rather busy trying to avoid giving support for this problem (as of
+ 2008-11-11).
+
+ Unfortunately disabling DEP seems to have a not negligible
+ performance hit. In the long run, either MS has to fix their
+ problem, or we have to find a better workaround, if any exists.
+ Idle idea: Adding EXECUTE protection to all text segment pages? */
+ if (wincap.ts_has_dep_problem ())
+ disable_dep ();
+
debug_printf ("finished dll_crt0_0 initialization");
}
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:false,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:false,
has_restricted_stack_args:true,
has_transactions:false,
+ ts_has_dep_problem:false,
};
wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
supports_all_posix_ai_flags:true,
has_restricted_stack_args:false,
has_transactions:true,
+ ts_has_dep_problem:false,
};
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
}
if (has_osversioninfoex && version.wProductType != VER_NT_WORKSTATION)
- ((wincaps *)caps)->is_server = true;
-
+ {
+ ((wincaps *)caps)->is_server = true;
+ if (version.dwMajorVersion >= 6
+ && (version.wSuiteMask
+ & (VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS))
+ == VER_SUITE_TERMINAL)
+ ((wincaps *)caps)->ts_has_dep_problem = true;
+ }
if (NT_SUCCESS (NtQueryInformationProcess (GetCurrentProcess (),
ProcessWow64Information,
&wow64, sizeof wow64, NULL))
unsigned supports_all_posix_ai_flags : 1;
unsigned has_restricted_stack_args : 1;
unsigned has_transactions : 1;
+ unsigned ts_has_dep_problem : 1;
};
class wincapc
bool IMPLEMENT (supports_all_posix_ai_flags)
bool IMPLEMENT (has_restricted_stack_args)
bool IMPLEMENT (has_transactions)
+ bool IMPLEMENT (ts_has_dep_problem)
#undef IMPLEMENT
};
#define EXPORT_ALIAS(sym,symalias) extern "C" __typeof (sym) symalias __attribute__ ((alias(#sym)));
-#define WINVER 0x0600
+#define WINVER 0x0601
#define _NO_W32_PSEUDO_MODIFIERS
#include <sys/types.h>
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