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newlib-cygwin
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* shared.cc (shared_info::init_obcaseinsensitive): Check actual state 

of case sensitivity on post-Windows 2000 systems.
	* wincap.h (wincaps::kernel_is_always_casesensitive): New element.
	* wincap.cc: Implement above element throughout.
This commit is contained in:
Corinna Vinschen 2012-02-21 17:03:51 +00:00
parent db05364aa9
commit 801bf9f272
4 changed files with 52 additions and 13 deletions
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8
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,11 @@
2012-02-21 Corinna Vinschen <corinna@vinschen.de>
Based on an idea from Nick Lowe <nick.lowe@gmail.com>:
* shared.cc (shared_info::init_obcaseinsensitive): Check actual state
of case sensitivity on post-Windows 2000 systems.
* wincap.h (wincaps::kernel_is_always_casesensitive): New element.
* wincap.cc: Implement above element throughout.
2012-02-20 Corinna Vinschen <corinna@vinschen.de>
* flock.cc (inode_t::del_my_locks): Drop useless counter lc. Close

47
winsup/cygwin/shared.cc
View File

@ -286,23 +286,44 @@ shared_destroy ()
UnmapViewOfFile (user_shared);
}
/* Initialize obcaseinsensitive. Default to case insensitive on pre-XP. */
/* Initialize obcaseinsensitive.*/
void
shared_info::init_obcaseinsensitive ()
{
NTSTATUS status;
DWORD def_obcaseinsensitive = 1;
if (wincap.kernel_is_always_casesensitive ())
{
/* Only Windows 2000. Default to case insensitive unless the user
sets the obcaseinsensitive registry value explicitely to 0. */
DWORD def_obcaseinsensitive = 1;
obcaseinsensitive = def_obcaseinsensitive;
RTL_QUERY_REGISTRY_TABLE tab[2] = {
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOSTRING,
L"obcaseinsensitive", &obcaseinsensitive, REG_DWORD,
&def_obcaseinsensitive, sizeof (DWORD) },
{ NULL, 0, NULL, NULL, 0, NULL, 0 }
};
status = RtlQueryRegistryValues (RTL_REGISTRY_CONTROL,
L"Session Manager\\kernel",
tab, NULL, NULL);
obcaseinsensitive = def_obcaseinsensitive;
RTL_QUERY_REGISTRY_TABLE tab[2] = {
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOSTRING,
L"obcaseinsensitive", &obcaseinsensitive, REG_DWORD,
&def_obcaseinsensitive, sizeof (DWORD) },
{ NULL, 0, NULL, NULL, 0, NULL, 0 }
};
RtlQueryRegistryValues (RTL_REGISTRY_CONTROL,
L"Session Manager\\kernel",
tab, NULL, NULL);
}
else
{
/* Instead of reading the obcaseinsensitive registry value, test the
actual state of case sensitivity handling in the kernel. */
UNICODE_STRING sysroot;
OBJECT_ATTRIBUTES attr;
HANDLE h;
RtlInitUnicodeString (&sysroot, L"\\SYSTEMROOT");
InitializeObjectAttributes (&attr, &sysroot, 0, NULL, NULL);
/* NtOpenSymbolicLinkObject returns STATUS_ACCESS_DENIED when called
with a 0 access mask. However, if the kernel is case sensitive,
it returns STATUS_OBJECT_NAME_NOT_FOUND because we used the incorrect
case for the filename (It's actually "\\SystemRoot"). */
obcaseinsensitive = NtOpenSymbolicLinkObject (&h, 0, &attr)
!= STATUS_OBJECT_NAME_NOT_FOUND;
}
}
void inline

8
winsup/cygwin/wincap.cc
View File

@ -54,6 +54,7 @@ wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:true,
};
wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -87,6 +88,7 @@ wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:true,
};
wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -120,6 +122,7 @@ wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:false,
};
wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -153,6 +156,7 @@ wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:false,
};
wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -186,6 +190,7 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:false,
};
wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -219,6 +224,7 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:true,
has_program_compatibility_assitant:false,
kernel_is_always_casesensitive:false,
};
wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -252,6 +258,7 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:false,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:true,
kernel_is_always_casesensitive:false,
};
wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -285,6 +292,7 @@ wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_console_logon_sid:true,
wow64_has_secondary_stack:false,
has_program_compatibility_assitant:true,
kernel_is_always_casesensitive:false,
};
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));

2
winsup/cygwin/wincap.h
View File

@ -44,6 +44,7 @@ struct wincaps
unsigned has_console_logon_sid : 1;
unsigned wow64_has_secondary_stack : 1;
unsigned has_program_compatibility_assitant : 1;
unsigned kernel_is_always_casesensitive : 1;
};
class wincapc
@ -96,6 +97,7 @@ public:
bool IMPLEMENT (has_console_logon_sid)
bool IMPLEMENT (wow64_has_secondary_stack)
bool IMPLEMENT (has_program_compatibility_assitant)
bool IMPLEMENT (kernel_is_always_casesensitive)
#undef IMPLEMENT
};